Honeywell Thermostat Q7300H User Manual - Honeywell Thermostat Manual Download

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Honeywell Thermostat Q7300H User Manual

T7300F/Q7300H Series 2000 Commercial Thermostats and Communicating Subbases Contents INTRODUCTION ........................................................................................................................... 3 Description of Devices ....................................................................................... 3 Control Application ............................................................................................. 3 Control Provided................................................................................................. 4 Product Names .................................................................................................. 4 Products Covered............................................................................................... 5 Organization of Manual ...................................................................................... 5 Applicable Literature .......................................................................................... 6 Agency Listings .................................................................................................. 6 Abbreviations and Definitions............................................................................. 6 CONSTRUCTION ........................................................................................................................... 7 Performance Specifications ............................................................................... 8 Input/Output Summary .................................................................................. 8 Communications............................................................................................ 9 LonMark® Functional Profile.............................................................................. 10 Configurations .................................................................................................... 10 General.......................................................................................................... 10 APPLICATION STEPS ........................................................................................................................... 11 Overview ............................................................................................................ 11 Step 1. Plan The System.................................................................................... 11 Step 2. Determine Required Network Devices................................................... 12 Step 3. Lay Out Communications and Power Wiring ......................................... 12 LonWorks Bus Layout ................................................................................ 12 Cable Termination ......................................................................................... 14 Singly Terminated Network Segment ....................................................... 14 Doubly Terminated Daisy-chain Network Segment .................................. 15 Wiring Details ................................................................................................ 15 Step 4. Prepare Wiring Diagrams ...................................................................... 15 General Considerations................................................................................. 18 Step 5. Order Equipment.................................................................................... 19 Step 6. Configure T7300F/Q7300H.................................................................... 20 Step 7. Troubleshooting ..................................................................................... 20 APPENDIX A ........................................................................................................................... 20 Sequence of Operations.................................................................................... 20 USER ADDRESS NETWORK VARIABLES See form number 63-4366, Q7300 Communicating Subbase System Integration User Address Manual. LonWorks®, LonTalk®, LonMark® and Excel LonSpec™ are U.S. registered trademarks of Echelon® Corporation. ®U.S. Registered Trademark Copyright © 1998 Honeywell Inc. • All Rights Reserved 63- 4365 T7300F/Q7300H SERIES 2000 COMMERCIAL THERMOSTATS AND COMMUNICATING SUBBASES LIST OF FIGURES Fig. 1. Typical T7300F/Q7300H LonWorks® network diagram.......................... 3 Fig. 2. Typical T7300F/Q7300H application....................................................... 4 Fig. 3. T7300F/Q7300H dimensions in in. (mm). ............................................... 8 Fig. 4. Functional Profile Number 8060LonMark® Thermostat Object (Type 09) (Thermostat profile variables not used are grayed). ..................... 10 Fig. 5. Connecting personal computer to LonWorks® Bus................................ 11 Fig. 6. Typical topology for T7300F/Q7300H devices in LonWorks® network..................................................................................... 13 Fig. 7. Wiring layout for two doubly terminated LonWorks® Bus segments. ..... 13 Fig. 8. Wiring layout for one doubly terminated daisy-chain LonWorks® Bus segment. ............................................................................ 14 Fig. 9. Singly terminated LonWorks Bus termination module. ........................ 14 Fig. 10. Doubly terminated LonWorks® Bus termination modules. ................... 15 Fig. 11. Proper wiring technique. ....................................................................... 15 Fig. 12. Ferrite core wires from Q7300H to digital inputs and outputs. .............. 15 Fig. 13. Typical hookup of T7300F/Q7300H in three-stage heat, two-stage cool heat pump system................................................................. 16 Fig. 14. Typical hookup of T7300F/Q7300H in three-stage heat, two-stage cool heat pump system................................................................. 16 Fig. 15. Typical hookup of T7300F/Q7300H in three-stage heat, three-stage cool conventional system. .......................................................... 17 Fig. 16. Typical hookup of T7300F/Q7300H in two-stage heat, one-stage cool conventional system. ............................................................ 17 LIST OF TABLES Table 1. Additional Products. ............................................................................. 5 Table 2. Terminal descriptions and conditions................................................... 9 Table 3. Application Steps. ................................................................................ 11 Table 4. LonWorks® Configuration Rules and Device Node Numbers.............. 12 Table 5. Field Wiring Reference Table ............................................................... 18 Table 6. Ordering Information. ........................................................................... 19 63-4365 2 T7300F/Q7300H SERIES 2000 COMMERCIAL THERMOSTATS AND COMMUNICATING SUBBASES INTRODUCTION Control Application The T7300F/Q7300H Series 2000 Commercial Description of Devices Thermostats and Communicating Subbases control 24 Vac commercial single zone heating, ventilating and air The Q7300H Subbase is a LonMark® certified device that conditioning (HVAC) equipment. In addition, the Q7300H provides networking capability for the T7300F Thermostat can communicate schedule information and system in a LonWorks® system using a transformer-coupled Free instructions to other devices in a LonWorks® network. Topology Transceiver (FTT). See Fig. 1. Fig. 2 shows a typical T7300F/Q7300H application in a three-stage heat and two-stage cool heat pump system. The T7300F/Q7300H communicates with all LonMark® For additional T7300F/Q7300H hookups, see Fig. 13, 15, devices including the following: 16.  Other T7300F/Q7300H Commercial Thermostat/Communicating Subbases. — Excel 15 S7760A Command Display. — Excel 10 W7750A,B Constant Volume Air Handler Unit (CVAHU) Controller. — Excel 15 W7760A Building Manager. — Excel 10 W7761A Remote Input/Output (RIO) Controller. BUILDING MANAGER NOTEBOOK PC 1 4 8 12 16 WALL MODULE EXCEL 15 W7760 EXCEL 10 CVAHU 17 23 30 31 37 44 RS-232 SERIAL PORT LonWorks¨ BUS SLTA S7760 T7300 Back Select MODEM BUILDING MANAGER 1 4 8 12 16 WALL MODULE EXCEL 15 W7760 EXCEL 10 CVAHU 17 23 30 31 37 44 RS-232 MODEM SERIAL PORT ¨ SLTA LonWorks BUS S7760 T7300 Back Select M16083B Fig. 1. Typical T7300F/Q7300H LonWorks® network diagram. 3 63-4365 T7300F/Q7300H SERIES 2000 COMMERCIAL THERMOSTATS AND COMMUNICATING SUBBASES SUBBASE 3 AS AS X Y2 Y1 OE G W1 B R A1 A2 C5 C4 C3 C2 C1 T TEBEB AUX. HEAT DISCHARGE COMPRESSOR ¨ CONTACTOR 2 LonWorks AIR BUS SENSOR FAN HEAT CA5 CA4 CA3 CA2 CA1 T T RELAY CHANGEOVER COMPRESSOR T7147 REMOTE COMFORT ADJUST MODULE VALVE LonWorks¨ CONTACTOR 1 GND EM. HT. BUS RELAY ECONOMIZER 2 4 COOL 1 CHANGEOVER L1 VALVE (HOT) L2 1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. TRANSFORMER 2 USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION INSTRUCTIONS. 3 USE A1 AND A2 WHEN CONTACTS ARE NORMALLY CLOSED IN OCCUPIED MODE. M16056 4 CONNECT GND TO EARTH GROUND. Fig. 2. Typical T7300F/Q7300H application. Communicating subbases for T7300F Thermostats add value by allowing remote-site access—via telephone Product Names lines—for diagnostics, maintenance and monitoring. In addition, the T7300F can act as the user interface for on- When combined with the T7300F Series 2000 Commercial site Excel 10 Controllers (after initial installation with Excel Thermostat, the Q7300H Communicating Subbase LonSpec™) without the need for a personal computer communicates with other devices in a LonWorks® workstation. Through the T7300F/Q7300H network. The thermostat and subbase are available in the Thermostat/Communicating Subbase, a building operator following models: can control Excel 10 devices by setting occupancy schedules, setpoints and additional features. Part Number Product Description Q7300H2003 Communicating subbase with O and B Control Provided terminals for three-stage heat, two-stage cool heat pump system. The Q7300H communicates with other network devices, or Q7300H2011 Communicating subbase without O and nodes, for the purpose of sharing data. Through the B terminals for three-stage heat, two- network, the T7300F/Q7300H sets and deletes schedules. stage cool heat pump system. Schedules can be bypassed by selecting Continuous Unoccupied or Temporary Override. By using network Q7300H2029 Communicating subbase for three-stage messaging, the Q7300H sets fan operation (ON, AUTO) heat, three-stage cool conventional and system mode (HEAT, COOL, AUTO, OFF, EM HEAT) system. designated by a remote T7300F. Schedules can be Q7300H2037 Communicating subbase for two-stage programmed for seven days with four designated periods heat, one-stage cool conventional per day; Occupied 1, Occupied 2, Unoccupied 1 and system with valve two-position heat Unoccupied 2. In external schedule mode, the T7300F output. changes occupancy through a network-based scheduler. In local schedule mode, the T7300F changes occupancy T7300F2002 Series 2000 Commercial Electronic through an internal scheduler. If the external schedule is Thermostat without system and fan not periodically updated, the T7300F defaults to the local switching. schedule. T7300F2010 Series 2000 Commercial Electronic Thermostat with system and fan The T7300F/Q7300H is also able to provide time of day, switching. temporary setpoint, bypass status and additional information to multiple Excel 10 devices by sending instructions from one T7300F/Q7300H to the Excel 10 devices. When the T7300F is configured to schedule temporary setpoint and effective bypass information for other devices, certain restrictions apply such as: — When the T7300F is scheduling temporary setpoints for Excel 10 devices, the Excel 10 cannot adjust setpoints using the T7770 wall module. — When the T7300F is providing effective bypass information to Excel 10 devices, the Excel 10 cannot change the bypass status using the T7770 wall module. 63-4365 4 T7300F/Q7300H SERIES 2000 COMMERCIAL THERMOSTATS AND COMMUNICATING SUBBASES Products Covered Organization of Manual This System Engineering manual describes how to apply This manual is divided into four basic sections: the T7300F Thermostat and Q7300H Communicating 1. Introduction. Provides an overview of the Subbase and related accessories to typical applications. T7300F/Q7300H, discusses related devices, lists Devices include: additional literature, and provides a glossary of T7300F Series 2000 Commercial Thermostat. abbreviation and terms. Q7300H Series 2000 Communicating Subbase. 2. Construction. Describes T7300F/Q7300H features, Excel 15 W7760A Building Manager. network connections and dimensions. 3. Application Steps. A step-by-step procedure that Excel 10 Controllers, as follows: provides the information necessary to plan and lay W7750A,B Constant Volume Air Handler Unit (CVAHU) out the T7300F/Q7300H application and accurately Controller. order materials. W7761 Remote Input/Output (RIO) Controller. 4. Appendix. Appendix A provides a sequence of operations for configuring network controllers. Other products: Q7751A,B Bus Router. The organization of the manual assumes a project is being Q7760A Serial LonTalk Adapter. engineered from start to finish. If you are changing an Q7740A,B FTT Repeaters. existing system, refer to the Table of Contents for relevant 209541B FTT Termination Module. sections. See Table 1 for additional products. Table 1. Additional Products. Part Number Product Description Comments R8242A Contactor, 24 Vac coil, DPDT. — AT72D, AT88A, etc. Transformers. — 4074EYD Wallplate for T7770 Wall Modules. For covering an existing hole in a wall. — Serial Interface Cable, male DB-9 to female DB-9 or Obtain locally from any computer female DB-25. hardware vendor. Honeywell (US only) LonWorks® Bus (plenum): 22 AWG (0.325 sq mm) Level IV, 140°F (60°C) rating. AK3791 (one twisted pair) twisted pair solid conductor, nonshielded or Echelon AK3792 (two twisted pairs). approved shielded cable. Honeywell (US only) LonWorks® Bus (nonplenum): 22 AWG (0.325 sq mm) Level IV, 140°F (60°C) rating. AK3781 (one twisted pair) twisted pair solid conductor, nonshielded or Echelon AK3782 (two twisted pairs). approved shielded cable. Honeywell AK3725 (US only), Inputs: 18 AWG (1.0 sq mm) five wire cable bundle. Standard thermostat wire. typical or equivalent. Honeywell AK3752 (US only), Outputs/Power: 14 to 18 AWG (2.0 to 1.0 sq mm). NEC Class 2, 140°F (60°C) rating. typical or equivalent. Honeywell AK3702 (US only), 18 AWG (1.0 sq mm) twisted pair. Non-plenum. typical or equivalent. Honeywell AK3712 (US only), 16 AWG (1.3 sq mm) twisted pair. Non-plenum. typical or equivalent. Honeywell AK3754 (US only), 14 AWG (2.0 sq mm) two conductor. Non-plenum. typical or equivalent. 5 63-4365 T7300F/Q7300H SERIES 2000 COMMERCIAL THERMOSTATS AND COMMUNICATING SUBBASES Applicable Literature ABBREVIATIONS AND DEFINITIONS The following list of documents contains general Application—A specific Building Control function. information related to the T7300F/Q7300H Series 2000 Commercial Thermostats and Communicating Subbases. Binding—The process of logically connecting network variables in one node to network variable(s) in other Form No. Title node(s). Binding is performed by a network management node that writes the binding information into the EEPROM 62-0125 T7300F Series 2000 Commercial memory of all the neuron's involved. The binding Microelectronic Conventional or Heat information is saved in the network image of each neuron. Pump Thermostat Installation Instructions 62-0155 Q7300H Series 2000 Commercial Building Manager—A LonMark® certified device that can Thermostat Installation Instructions be used to monitor and control HVAC equipment and other miscellaneous loads in a distributed network. 74-2976 Excel LonSpec™ Specification Data 74-2977 Excel LonSpec™ Software Release Command Display—A device that can be used to monitor Bulletin and change parameters. 74-2937 Excel LonSpec™ User’s Guide Control Loop—A primitive control function. A type of 74-2982 Light Commercial Building Solutions function in a node that includes processes, loops and System Specification Data programs. A node can contain one or more control loops. (In Excel 10 class devices, the control loop occupies the 74-2865 E-Bus Wiring Guidelines User’s Guide entire node.) 74-2967 Excel 15 W7760A Building Manager Specification Data CVAHU—Excel 10 Constant Volume Air Handler Unit Controller. 95-7565 Excel 15 W7760A Building Manager Installation Instructions Excel 10s—A family of application - specific HVAC 74-2969 Excel 15 W7760A Building Manager controllers such as the Excel 10 CVAHU and Excel 10 System Engineering RIO. 74-2956 Excel 10 W7750A,B CVAHU Controller HVAC—Heating, Ventilating and Air Conditioning. Specification Data 95-7521 Excel 10 W7750A,B CVAHU Controller I/O—Input/Output. Installation Instructions LonWorks® Network—A data network based on neurons 74-2958 Excel 10 W7750A,B CVAHU Controller communicating with each other using the LonTalk® System Engineering protocol. 74-2698 Excel 10 W7761A RIO Controller Specification Data Mandatory Mechanisms/Objects/Network Variables— Mandatory mechanisms and network variables that are 95-7539 Excel 10 W7761A RIO Controller implemented in all the Excel 10 devices. Installation Instructions 74-2699 Excel 10 W7761A RIO Controller System NamedObject—Objects that have names are called Engineering NamedObjects. These objects are visible on the network as functional independent entities and are accessed by 74-2697 T7770A, B, C, D, E, F, G Wall Module name. Typical examples of NamedObjects are Controllers, Specification Data ControlLoops and LogicFunction blocks. 95-7538 T7770A, B, C, D, E, F, G Wall Module Installation Instructions Network Management Node—A LonWorks® node that is 95-7554 209541B Termination Module Installation responsible for configuring the network, installing the Instructions nodes, binding the network variables between nodes, and general network diagnostics. Agency Listings European Community Mark (CE): Conforms to requirements of European Consortium Standards. 63-4365 6 T7300F/Q7300H SERIES 2000 COMMERCIAL THERMOSTATS AND COMMUNICATING SUBBASES Network Variables—A class of variables defined in RIO—Excel 10 Remote Input/Output device. Neuron C that allows communication over the LonWorks® network to other nodes on the network. An output network RTC—Real Time Clock. variable in one node can be bound to corresponding input network variable(s) in other node(s). Changing the value of Schedule—The structure that defines the occupancy the output network variable in one node causes the new states, setpoints and the time of the changes between value to be automatically communicated to the bound input these states. network variable(s) in other node(s). When an input network variable is updated, an nv_update_occurs event is SGPU—Significant Event Notification and Guaranteed posted at the receiving node(s) so that the application Periodic Update. program can take action based on the change. A network management node that explicitly reads and/or writes the SGPUC—Significant Event Notification and Guaranteed network variable can also poll network variables. Network Periodic Update with Change Field. variables can contain one data field (one or two bytes) or multiple data fields (a structure). SLTA—Serial LonTalk® Adapter. Adapts the transformer coupled LonTalk® messages to the RS-232 Serial Port. Node—A device implementing layers one through six of the LonTalk® protocol including a Neuron® Chip, SNVT—Standard Network Variable Type. transceiver, memory, and support hardware. SCPT—Standard Configuration Parameter Type. Notebook PC—Portable personal computer. Optional Mechanism/Object/Network Variables— Optional mechanisms and variables that shall be CONSTRUCTION implemented on an as-needed basis. However, a different mechanism or network variable cannot be implemented if The T7300F Thermostat has a keypad for setting system an existing optional mechanism or network variable can parameters, a corresponding LCD display and a flip-down perform the same function. keypad cover. The T7300F Thermostat mounts on the Q7300H Subbase. Programmable Controller—A controller that has a variable number of control loops of different types and is The Q7300H Communicating Subbase includes user-programmed to execute an application. The user can LonWorks® Bus terminals and a jack for temporary select the number and type of control loops. The user also network connections to a personal computer. A service pin has the capability of generating new types of control loops. push button provides service messaging to physically locate the device on the LonWorks® network. The Recovery Mode or Recovery Period—The time in subbase mounts horizontally on the wall or on a unoccupied periods when the temperature control is 2 in. x 4 in. junction box. adjusting the control setpoint so that the space temperature reaches the occupied setpoint when the Fig. 3 shows T7300F/Q7300H dimensions. schedule change occurs. 7 63-4365 T7300F/Q7300H SERIES 2000 COMMERCIAL THERMOSTATS AND COMMUNICATING SUBBASES 6-11/16 (170) 1/16 (2) 3-3/16 (77) 1-3/8 (35) 1-7/8 (47) 4-1/8 (105) 1-11/16 (43) 7-5/16 (186) 7/8 (22) Set Program Set Temperature 4-5/8 Change Run Occupied Unoccupied Occupied Unoccupied (117) Program Start Time Start Time Day Temp Temp Time/Temp Temporary Set Current Clear Heat/Cool Occupied Day/Time Start Time Copy Settings Continous Unoccupied System Fan M16086A Fig. 3. T7300F/Q7300H dimensions in in. (mm). Differential: Performance Specifications 2°F (1°C). Electrical Ratings: Humidity Ratings: Power: 20 to 30 Vac, 50/60 Hz. 5% to 90% RH, noncondensing. System Current: 6 VA maximum at 30 Vac, 50 or 60 Hz. Temperature Ratings: Input/Output Summary: Setpoint Range: Heating: 40°F to 90°F (4°C to 32°C; Cooling: 45°F to 90°F (7°C to 32°C). Table 2 summarizes the T7300F/Q7300H Operating: 40°F to 110°F (4°C to 43°C). Thermostat/Subbase inputs and outputs. Shipping: -20°F to +130°F (-29°C to +54°C). Display Accuracy: ±1°F (+0.5°C). 63-4365 8 T7300F/Q7300H SERIES 2000 COMMERCIAL THERMOSTATS AND COMMUNICATING SUBBASES Table 2. Terminal descriptions and conditions. Standard Terminal Designations Typical Connection Function Terminal Type A1, A3 Damper control relay. See T7300F Installation Instructions, form Output Dry contract 69-1025-3, installer setup 18, for control parameters. A2 Dry auxiliary contact. (A2 is common to A1, A3.) Input — AS,AS C7150B Discharge Air Sensor connection. Input — B Heating changeover valve. Output 24V powered contact BM ML7984 Actuator connection. No call for heat; valve closed Output — during occupied periods and open during unoccupied periods. C1, C2, C3, C4, C5 Communication input for T7147. Input/Output Low power E Emergency heat relay. Output 24V powered contact EB, EB LonWorks® Bus connection to LonWorks® network. Input/output Communications FC Fan control transformer. Input — G Fan relay. Output — GH High speed fan output. Activated during call for cooling. Output — GL Low speed fan output. Activated on call for heat and fan On Output — selection. O Cooling changeover valve. Output — P1, P2 Pump interlock relay. Operates circulator pump in hydronic heat Input, output — or energizes conventional heat system. R 24V system transformer. Input — RC 24V cooling transformer. Input — RH 24V heating transformer. Input — RM ML7984 Actuator connection. No call for heat; valve closed. Call Output — for stage 1 heat; valve approximately one-half open. Call for stage 2 heat; valve fully open. T, T Remote sensor input for T7047 or T7147. Input — W1 Stage 1 heating relay or auxiliary heat relay. Output — W2 Stage 2 heating relay Output — W3 Stage 3 heating relay Output — X Heating transformer common. Input — Y Cool call. 24V output on Y — Y1 Stage 1 compressor contactor. Output — Y2 Stage 2 cooling compressor (conventional). Stage 2 Output — compressor contactor (heat pump). Y3 Stage 3 cooling compressor. Output — Communications verification and future expansion of the network. It also minimizes unknown or inaccurate wire run lengths, node- The Q7300H provides networking capability in a to-node (device-to-device) distances, node counts, total LonWorks® system when using a Free Topology wire length, inaccurate repeater/router locations, and Transceiver (FTT) transformer-coupled communications misplaced or missing terminations. LonWorks® networks port running at 78 kilobits per second (kbs). The can be configured in a variety of ways; refer to the E-Bus transformer-coupled communications interface offers a FTT Network Wiring Guidelines, form 74-2865-1, for a much higher degree of common-mode noise rejection complete description of network topology rules and while ensuring dc isolation. maximum wire length. If longer runs are required, add a Q7740A 2-way or Q7740B 4-way repeater to extend the LonWorks® FTT networks are very flexible and convenient LonWorks® Bus length. Add a Q7751A to partition the to install and maintain, but it is imperative that the network system into two segments to double the length of layout be carefully planned and accurate documentation LonWorks® Bus. created and maintained. This aids in compliance 9 63-4365 T7300F/Q7300H SERIES 2000 COMMERCIAL THERMOSTATS AND COMMUNICATING SUBBASES Approved cable types for LonWorks® Bus NOTE: For additional information on the LonMark® communications wiring are Level IV, 22 AWG (0.34 sq Functional Profile, see the LonMark® Application mm) plenum or non-plenum rated unshielded, twisted pair, Layer Interoperability Guidelines and the solid conductor wire. For nonplenum areas, use US part LonMark® Functional Profile: Thermostat. Both AK3781 (one pair) or US part AK3782 (two pair). In documents are available from LonMark® at plenum areas, use US part AK3791 (one pair) or US part internet address: www.lonmark.org. AK3792 (two pair). Other Echelon approved cable may also be used. Run communications wiring in a conduit, if needed, with non-switched 24 Vac or sensor wiring. The Free Topology Transceiver (FTT) communications CONFIGURATIONS LonWorks® Bus supports a polarity insensitive, free topology wiring scheme that, in turn, supports star, loop, General and/or bus wiring. The T7300F/Q7300H can be configured to perform a LonMark® Functional Profile variety of activities in which data is sent to and/or received from other nodes on the LonWorks network. The Q7300H supports the LonMark® Functional Profile Number 8060,Thermostat Object (Type 09). See Fig. 4. Information that can be shared with other network devices includes: Hardware — Day-of-week and time-of-day Output — System mode (HEAT, COOL, AUTO, OFF, EM HEAT) — Current fan setting (ON, AUTO) Thermostat Object — Space temperature Type Number 09. — Current setpoint nvoHeatOutput — Occupied/Unoccupied schedule commands nv1 nviSetpoint nv2 SNVT_temp_p SNVT_ lev_percent — Current occupancy status nvoCoolOutput — Relay status (heat/cool stages and fan) Mandatory nv3 SNVT_ lev_percent — Alarm status Network — Alarm log Variables nvoSpaceTemp nv4 SNVT_ temp_p A network configuration tool is used to configure Q7300Hs nv5 nvoUnitStatus SNVT_hvac_status and other nodes with which the Q7300H interacts. nviSpaceTemp nvoTerminalLoad nv6 nv11 The following is a brief description of the configurable SNVT_ temp_p SNVT_ lev_percent features that can be commanded over the network: nviOccCmd • nv7 nv12 nvoEffectSetpt Day-of-Week/Time-of-Day: SNVT_occupancy SNVT_ temp_p Optional When a T7300F Thermostat is designated as the nvoTerminalfan nv8 nviApplicMode nv13 network time master, the current time of day and day of SNVT_hvac_mode Network SNVT_switch Variables week is synchronized across the network every minute. nv9 nviSetptOffset nv14 nvoEnergyHoldOff Whenever the time of day or day of week of the time SNVT_ temp_p SNVT_switch master is changed, it automatically adjusts all the other nviEnergyHoldOff T7300Fs on the network. When a T7300F is controlled nv10 SNVT_switch by a time master, its time cannot be changed using its keypad. If an attempt is made to change its time, the Configuration Properties controlled T7300F LED displays LOC. nc49 - nciSndHrtBt SNVT_time_sec (mandatory) • System Switch Settings: nc48 - nciRcvHrtBt SNVT_time_sec (optional) System switch settings (HEAT, COOL, AUTO, OFF, EM nc64 - nciMin Delta SNVT_temp_p (optional) nc17 - neiLocation SNVT_str_asc (optional) HEAT) can be designated by a remote T7300F, or if nc60 - nciSetPnts SNVT_temp_setpt (mandatory) configured to allow it, from the T7300F keypad. nc79 - nciUpSPHeat SNVT_temp_p (optional) • nc80 - nciLrSPHeat SNVT_temp_p (optional) Fan Settings: nc76 - nciUpSPCool SNVT_temp_p (optional) Fan settings (ON, AUTO) are selected as designated by nc77 - nciLrSPCool SNVT_temp_p (optional) a remote T7300F, or from the T7300F keypad. • Space Temperature: Manufacturer If a valid space temperature value is received at the Defined Q7300H DestRmTemp network variable input, that Section value will be used in the T7300F as the primary controlled variable. In this case, the internal space Hardware sensor of the T7300F is ignored. Input M16087A • Current Setpoint: If a valid setpoint value is received at Q7300H Fig. 4. Functional Profile Number 8060LonMark® DestSetPoint, that value will be used by the Q7300H as Thermostat Object (Type 09). the center setpoint. The heat and cool setpoints are (Thermostat profile variables not used are grayed). then calculated from this value and are used in the T7300F as the occupied setpoints. During unoccupied periods, DestSetPoint is ignored. 63-4365 10 T7300F/Q7300H SERIES 2000 COMMERCIAL THERMOSTATS AND COMMUNICATING SUBBASES • Schedule: Table 3. Application Steps. The occupancy schedule used by a T7300F may reside locally in that device or remotely in another schedule Step Description device (T7300F or Excel 15). Local schedules can be 1 Plan the system. created and modified using the T7300F keypad, or with a configuration tool. External schedules can also be 2 Determine required network devices. modified using the keypad of the schedule device, or 3 Lay out communications and power wiring. with a configuration tool. When a T7300F receives scheduling information over the network, the user is 4 Prepare wiring diagrams. locked out from making schedule changes at the 5 Order equipment. keypad, and the LCD displays LOC if attempted. When a T7300F Thermostat is designated as a schedule 6 Configure T7300F/Q7300H. device, it sends its schedule file to the appropriate 7 Troubleshooting. Q7300H(s) which, in turn, overwrites any existing internal schedule in their T7300F Thermostat. The T7300F/Q7300H Thermostat/Subbase can provide Step 1. Plan the System scheduling information to multiple Excel 10 devices by taking instruction from one T7300F/Q7300H and Plan the use of the T7300F/Q7300H Thermostat/Subbase sharing the information with the desired Excel 10 according to the job requirements. Determine the location devices. and functionality. Verify the sales estimate for the number • Occupancy Bypass: of other controllers and devices required. Check the Any internal schedule in the T7300F is overridden if a number and type of other required accessories. valid occupancy command is received by its Q7300H (resulting from an existing external schedule on the When planning the system layout, consider potential LonWorks network). expansion possibilities for future growth. Planning is very • Continuous Unoccupied: important if HVAC systems and controllers are to be added In this mode, the T7300F Thermostat sets the operating in future projects. setpoints to the unoccupied setpoints. The T7300F remains in this mode until the Run Program key is NOTEBOOK PC pressed. • Setpoint Changes: SHIELDED Selecting a temporary setpoint modifies that setpoint for INTERFACE T7300 the present schedule period. Pressing Run Program CABLE RS-232 terminates temporary setpoints. Temperature setpoint SERIAL Q7760 range is 40°F to 90°F (4°C to 32°C). PORT SLTA • Temporary Override: Modifies the schedule to operate the thermostat in CABLE PART ¨ occupied mode for a designated number of hours. NO. 205979 LonWorks Temporary occupied time can be selected for 1, 3, 8 or BUS PORT 12 hours. If a change from occupied to unoccupied is M10102B scheduled and the Temporary Override key is pressed, the thermostat remains in occupied mode until the designated override time expires. If the thermostat is in Fig. 5. Connecting personal computer to LonWorks the unoccupied mode when the Temporary Occupied Bus. key is pressed, the thermostat operates at the occupied setpoint until the override time expires. Refer to the E-Bus Wiring Guidelines, form 74-2865 for a complete description of network topology rules. See Application Step 3. Lay Out Communications and Power APPLICATION STEPS Wiring, for more information on bus wiring layout and Fig. 6 through 10 in Application Step 4. Prepare Wiring Overview Diagrams, for wiring details. The application steps shown in Table 3 are guidelines for Refer to the Excel LonSpec™ User Guide, form 74-2937, configuring the T7300F/Q7300H Thermostat/Subbase in a to configure the W7760A Building Manager, W7750A,B LonWorks® Bus network and explain the network role of and W7761 Controllers and the Q7300H Subbase. the T7300F/Q7300H. 11 63-4365 T7300F/Q7300H SERIES 2000 COMMERCIAL THERMOSTATS AND COMMUNICATING SUBBASES In addition, a 209541B Termination Module may be Step 2. Determine Required Network required. Refer to the E-Bus Wiring Guidelines, form 74- Devices 2865, and the Excel 10 FTT Termination Module Installation Instructions form, 95-7554, or if Excel 15s are A maximum of 60 nodes can communicate on a single present, see Application Step 3. Lay Out Communications LonWorks Bus segment. Each LonWorks Bus device and Power Wiring in the W7760A System Engineering comprises one node. If more than 60 nodes are needed, a Guide, form 74-2969. Q7751A Router or Q7740 Repeater is necessary. In a network with Excel 15 devices, a router allows up to 120 Step 3. Lay Out Communications and controller nodes per network, divided between two LonWorks Bus segments. A router or repeater allows up Power Wiring to 120 controller nodes per network, divided between two LonWorks Bus segments. The router comprises two nodes (one node on each side of the router). Router and LonWorks® Bus Layout operator access nodes are not counted in the maximum  controller node totals. All devices are able to talk to each The communications LonWorks Bus, is a 78-kilobit other through the router. network that uses transformer isolation and differential Manchester encoding. Multiple operator terminals can be connected to the  LonWorks Bus at the same time. Table 4 summarizes The Free Topology Transceiver (FTT) LonWorks the LonWorks Bus segment configuration rules. communications Bus supports a polarity insensitive, free topology wiring scheme, refer to the E-Bus Wiring Guidelines form, 74-2865, for a complete description of Refer to the E-Bus Wiring Guidelines, form 74-2865, for a  complete description of network topology rules and LonWorks network topology rules. maximum wire lengths. If longer runs are required, use a Q7740A 2-way or Q7740B 4-way repeater to extend the Fig. 6 shows a typical wiring diagram for the length of the LonWorks Bus. Each network segment can T7300F/Q7300H in a LonWorks® network. Fig. 7 and 8 show wiring layouts for two doubly daisy-chained only have one repeater. If more nodes or longer distances  are required, add a router or repeater to limit bus traffic or LonWorks Bus segments. boost distance. Table 4. LonWorks Bus Configuration Rules and Device Node Numbers. One LonWorks Bus Segment Maximum Number of Controller Nodes 60 Maximum number of Excel 10s 60 nodes (minus number of Excel 15s) Maximum number of Excel 15s 4 nodes Total 60 nodes maximum Two LonWorks Bus Segments; with Excel 15 Maximum Number of Controller Nodes 112, plus two Controllers, more than 60 devices nodes for router access. One Q7751A,B Router 2 nodes Maximum number of Excel 15s 8 nodes Maximum number of Excel 10 RIO devices 24 nodes Maximum number of Excel 10s (20 per each Excel 15) 112 nodes (minus number of RIOs) Total 122 nodes maximum Two LonWorks Bus Segments; without Excel 15 Maximum Number of Controller Nodes 120, plus two Controllers, more than 60 devices nodes for router access. One Q7751A,B Router 2 nodes Maximum number of Excel 10s (60 per segment) 120 nodes Total 122 nodes maximum 63-4365 12 T7300F/Q7300H SERIES 2000 COMMERCIAL THERMOSTATS AND COMMUNICATING SUBBASES NOTEBOOK PC T7300 T7300 T7300 T7300 RS-232 ¨ SLTA LonWorks BUS T7300 MODEM MODEM RS-232 LonWorks¨ BUS SLTA T7300 T7300 T7300 T7300 MODEM RS-232 ¨ SLTA LonWorks BUS M16063A Fig. 6. Typical topology for T7300F/Q7300H devices in LonWorks network. 209541B TERMINATION LonWorks¨ BUS SEGMENT NUMBER 1 MODULE T7300 EXCEL 10 EXCEL 10 EXCEL 10 T7770 CVAHU CVAHU CVAHU 209541B 209541B TERMINATION TERMINATION MODULE MODULE LonWorks¨ BUS ACCESS LonWorks¨ BUS SEGMENT NUMBER 2 T7300 T7300 BUILDING MANAGER 1 4 8 12 16 Q7751A FTT EXCEL 15 E-BUS W7760 ROUTER 209541B TERMINATION MODULE 17 23 30 31 37 44 LonWorks¨ BUS SEGMENT NUMBER 2 EXCEL 10 EXCEL 10 EXCEL 10 CVAHU CVAHU CVAHU M16084C Fig. 7. Wiring layout for two doubly terminated LonWorks Bus segments. 13 63-4365 T7300F/Q7300H SERIES 2000 COMMERCIAL THERMOSTATS AND COMMUNICATING SUBBASES LonWorks¨ BUS EXCEL 10 CVAHU EXCEL 10 EXCEL 10 T7770 RI0 RI0 EXCEL 10 BUS T7300 ¨ 209541B TERMINATION RI0 MODULES (AT ENDS OF LonWorks¨ BUS DAISY-CHAIN) T7300 EXCEL 10 LonWorks CVAHU T7770 T7300 WITH NO LonWorks¨ T7300 BUS ACCESS BUILDING MANAGER 1 4 8 12 16 EXCEL 15 W7760 EXCEL 10 T7300 T7300 T7300 T7300 RI0 17 23 30 31 37 44 LonWorks¨ BUS T7770 WITH NO LonWorks¨ BUS ACCESS EXCEL 10 EXCEL 10 EXCEL 10 EXCEL 10 RI0 CVAHU RI0 RI0 T7770 LonWorks¨ BUS T7770 T7770 JACK FOR T7770 I/O CONNECTIONS OPERATOR TERMINAL M16085B Fig. 8. Wiring layout for one doubly terminated daisy-chain LonWorks segment. Cable Termination The FTT network segment requires termination for proper data transmission performance. Use a 209541B Termination Module to connect two of the three termination C1 C2 C3 C4 C5 module wires to the LonWorks Bus terminals. Singly Terminated Network Segment EB EB XTTASAS In a singly terminated topology segment, only one termination is required and can be placed anywhere on the segment. Singly terminated segments use the yellow and brown wires. Mount the termination modules on the BROWN YELLOW PART NO. 209541B appropriate terminals as shown in Fig. 9. TERMINATION MODULE M16202 ORANGE Fig. 9. Singly terminated LonWorks Bus termination module. 63-4365 14 T7300F/Q7300H SERIES 2000 COMMERCIAL THERMOSTATS AND COMMUNICATING SUBBASES Doubly Terminated Daisy-Chain Network Segment 2. Securely tighten each terminal screw. 3. Push excess wire back into the hole. In a doubly terminated daisy-chained topology segment, 4. Plug the hole with nonflammable insulation to two terminations are required, one at each end of the prevent drafts from affecting the thermostat. topology segment. Doubly terminated segments use the orange and brown wires. Mount the termination modules NOTE: After wiring, check that all connections are tight on the appropriate terminals as shown in Fig. 10. For and secure. See Fig. 11. Loose or intermittent additional wiring information, refer to the E-Bus Wiring wire connections can cause inconsistent system Guidelines, form 74-2865, and the Excel 10 FTT operation. Termination Module Installation Instructions, form 95-7554. C1 C2 C3 C4 C5 FOR STRAIGHT FOR WRAPAROUND INSERTION STRIP INSERTION STRIP 5/16 IN. (8 MM). EB EB XTTASAS 7/16 IN. (11 MM). M4826 Fig. 11. Proper wiring technique. BROWN ORANGE Wiring Details PART NO. 209541B TERMINATION MODULE YELLOW LonWorks® network cable should be wired separately from the power and I/O wires when installing Q7300s. If this is not possible, use a minimum of 4 in. (102 mm) separation between split ferrite cores (Fair-Rite 0443164151, or equivalent Honeywell part no. 229997CB, containing five split ferrite cores) to ensure compliance with Class B limits (does not apply to Class A limits). See C1 C2 C3 C4 C5 Fig. 12. to apply ferrite cores to LonWorks® Bus input and output. EB EB XTTASAS 1. WIRES TO Q7300H COMMUNICATING SUBBASE BROWN ORANGE PART NO. 209541B TERMINATION MODULE WIRES TO ALL 2. YELLOW INPUTS AND OUTPUTS M16122 WIRES TO ALL INPUTS AND OUTPUTS Fig. 10. Doubly terminated LonWorks Bus termination modules. WIRES TO Q7300H M10886A CAUTION COMMUNICATING SUBBASE Electrical Shock Hazard. Power supply can cause electrical shock. Fig. 12. Ferrite core wires from Q7300H to LonWorks® Disconnect power supply before beginning inputs and outputs. installation. 1. Loosen the terminal screws on the subbase and Step 4. Prepare Wiring Diagrams connect the system wires. See Fig. 11. Fig. 13 through 16 show T7300F/Q7300H terminal IMPORTANT arrangements and provide detailed wiring diagrams. Use 18-gauge, solid-conductor color-coded Reference these diagrams to prepare the site-specific job thermostat cable for proper wiring. If using 18- drawings. gauge stranded wire, do not use more than two wires. Do not use larger than 18-gauge wire. 15 63-4365 T7300F/Q7300H SERIES 2000 COMMERCIAL THERMOSTATS AND COMMUNICATING SUBBASES SUBBASE 2 AS AS X Y1 G Y2 E W3 W2 W1 R A1 A2 A3 C5 C4 C3 C2 C1 T T EB EB EM. HT. COMPRESSOR HEAT ECONOMIZER CONTACTOR 1 RELAY RELAY 2 DISCHARGE LonWorks¨ BUS AIR SENSOR 4 CA5 CA4 CA3 CA2 CA1 T T FAN T7147 REMOTE COMFORT ADJUST MODULE ¨ RELAY HEAT LonWorks BUS RELAY 3 GND 1 3 COMPRESSOR HEAT CONTACTOR 2 L1 RELAY 1 (HOT) L2 1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD TRANSFORMER PROTECTION AS REQUIRED. 2 USE A1 AND A2 WHEN CONTACTS ARE NORMALLY CLOSED IN OCCUPIED MODE. USE A2 AND A3 WHEN CONTACTS ARE NORMALLY OPEN IN OCCUPIED MODE. 3 CONNECT GND TO EARTH GROUND. M16057 4 USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS. Fig. 13. Typical hookup of T7300F/Q7300H in three-stage heat, two-stage cool heat pump system (without O/B terminals). SUBBASE 3 AS AS X Y2 Y1 OE G W1 B R A1 A2 C5 C4 C3 C2 C1 T TEBEB AUX. HEAT DISCHARGE COMPRESSOR ¨ CONTACTOR 2 LonWorks AIR BUS SENSOR FAN HEAT CA5 CA4 CA3 CA2 CA1 T T RELAY CHANGEOVER COMPRESSOR T7147 REMOTE COMFORT ADJUST MODULE VALVE LonWorks¨ CONTACTOR 1 GND EM. HT. BUS RELAY ECONOMIZER 2 4 COOL 1 CHANGEOVER L1 VALVE (HOT) L2 1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. TRANSFORMER 2 USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION INSTRUCTIONS. 3 USE A1 AND A2 WHEN CONTACTS ARE NORMALLY CLOSED IN OCCUPIED MODE. M16056 4 CONNECT GND TO EARTH GROUND. Fig. 14. Typical hookup of T7300F/Q7300H in three-stage heat, two-stage cool heat pump system (with O/B terminals). 63-4365 16 T7300F/Q7300H SERIES 2000 COMMERCIAL THERMOSTATS AND COMMUNICATING SUBBASES SUBBASE 3 AS AS RC Y1 GY2 Y3 X W3 W2 W1 RH A1 A2 A3 C5 C4 C3 C2 C1 T T EB EB 2 COMPRESSOR HEAT COMPRESSOR ECONOMIZER CONTACTOR 1 RELAY 2 DISCHARGE CONTACTOR 2 LonWorks¨ AIR 5 BUS SENSOR CA5 CA4 CA3 CA2 CA1 T T FAN T7147 REMOTE COMFORT ADJUST MODULE ¨ COMPRESSOR LonWorks RELAY GND CONTACTOR 3 BUS 1 4 HEAT HEAT L1 RELAY 3 L1 (HOT) RELAY 1 (HOT) L2 L2 1 COOLING HEATING TRANSFORMER TRANSFORMER 1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD 4 CONNECT GND TO EARTH GROUND. PROTECTION AS REQUIRED. 5 USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS. 2 JUMPER RC TERMINAL TO RH TERMINAL WHEN INSTALLED ON A SYSTEM WITH ONE TRANSFORMER. M16058 3 USE A1 AND A2 WHEN CONTACTS ARE NORMALLY CLOSED IN OCCUPIED MODE. USE A2 AND A3 WHEN CONTACTS ARE NORMALLY OPEN IN OCCUPIED MODE. Fig. 15. Typical hookup of T7300F/Q7300H in three-stage heat, three-stage cool conventional system. SUBBASE AS AS FC GL GHX R Y RM BM P1 P2 A1 A2 C5 C4 C3 C2 C1 T T EB EB HIGH ML7984 DAMPER SPEED VALVE CONTROL DISCHARGE FAN RELAY LonWorks¨ BUS AIR ACTUATOR RELAY 3 SENSOR LOW COOLING PUMP CA5 CA4 CA3 CA2 CA1 T T ¨ SPEED LonWorks BUS RELAY INTERLOCK T7147 REMOTE COMFORT FAN RELAY ADJUST MODULE GND RELAY 1 2 L1 L1 (HOT) (HOT) 1 L2 L2 FAN TRANSFORMER TRANSFORMER 1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. 2 CONNECT GND TO EARTH GROUND. M16059 3 SEE TABLE 2 FOR VALVE AND VALVE ACTUATOR MODELS. Fig. 16. Typical hookup of T7300F/Q7300H in two-stage heat, one-stage cool conventional system. 17 63-4365 T7300F/Q7300H SERIES 2000 COMMERCIAL THERMOSTATS AND COMMUNICATING SUBBASES General Considerations Table 5 lists wiring types, sizes and distances for the T7300F/Q7300H and Excel 10 products. The Q73000H accepts 14 through 22 AWG (2.0 to 0.34 sq. mm wire). Table 5. Field Wiring Reference Table. Recommended Wire Wire Size Specification Distance Function (Minimum) Construction or Requirement Vendor Wire Type (Maximum) Thermostat Inputs: 18 AWG Standard thermostat  Honeywell AK3725  wire. (1.0 sq mm) five wire. (US only), typical or wire cable bundle. equivalent. Thermostat Outputs/Power: NEC Class 2, 140°F Level IV, 140°F Honeywell AK3752  wire. 14 to 18 AWG (60°C) rating. (60°C) rating. (US only), typical or (2.0 to equivalent. 1.0 sq mm). LonWorks 22 AWG Twisted pair solid Level IV, 140°F Honeywell AK3781 Refer to E-bus Bus (Non- (0.34 sq mm) conductor, (60°C) rating. (one twisted pair), Wiring guidelines Plenum). nonshielded or AK3782 (two twisted Users Guide Echelon® approved pair). 74-2865-1 for cable. maximum length. Power 14 AWG Any pair nonshielded NEC Class II, Honeywell AK3754 Limited by line-loss Wiring. (2.0 sq mm) (use heavier wire for 140°F (60°C) (14 AWG) twisted effects on power longer runs). rating. pair), AK3909 consumption. (14 AWG) single conductor or equivalent. 63-4365 18 T7300F/Q7300H SERIES 2000 COMMERCIAL THERMOSTATS AND COMMUNICATING SUBBASES Step 5. Order Equipment After compiling a bill of materials through completion of the previous application steps, refer to Table 6, Ordering Information. Table 6. Ordering Information. Part Number Product Description Comments Q7300H2003 Communicating subbase with O and B Includes AS terminals for optional discharge air terminals for three-stage heat, two-stage cool sensing; A1, A2, A3 terminals for optional heat pump system. economizer. Q7300H2011 Communicating subbase without O and B Includes AS terminals for optional discharge air terminals for three-stage heat, two-stage cool sensing; A1, A2, A3 terminals for optional heat pump system. economizer. Q7300H2029 Communicating subbase for three-stage Includes AS terminals for optional discharge air heat, three-stage cool conventional system. sensing; A1, A2, A3 terminals for optional economizer. Q7300H2037 Communicating subbase for two-stage heat, Includes AS terminals for optional discharge air one-stage cool conventional system with sensing; A1, A2, A3 terminals for optional valve two-position heat output. economizer. T7300F2002 Series 2000 Commercial Electronic Use with Q7300H Communicating Subbase for Thermostat without system and fan network communications. switching. T7300F2010 Series 2000 Commercial Electronic Use with Q7300H Communicating Subbase for Thermostat with system and fan switching. network communications. W7750A,B Excel 10 Constant Volume Air Handler Unit. Single-speed fan provides continuous supply air to designated area. W7761A Excel 10 Remote Input/Output Device. Service messaging feature identifies physical location of specific Excel 10s on network. — Serial Interface Cable, male DB-9 to female Obtain locally from any computer hardware DB-9 or female DB-25. vendor. Honeywell (US only) LonWorks Bus (plenum): 22 AWG Level IV, 140°F (60°C) rating. AK3791 (one twisted pair) (0.325 sq mm) twisted pair solid conductor, AK3792 (two twisted pairs). nonshielded or Echelon approved shielded cable. Honeywell (US only) LonWorks Bus (nonplenum): 22 AWG Level IV, 140°F (60°C) rating. AK3781 (one twisted pair) (0.325 sq mm) twisted pair solid conductor, AK3782 (two twisted pairs). nonshielded or Echelon approved shielded cable. Honeywell AK3725 (US only), Inputs: 18 AWG (1.0 sq mm) five wire cable Standard thermostat wire. typical or equivalent. bundle. Honeywell AK3752 (US only), Outputs/Power: 14 to 18 AWG NEC Class 2, 140°F (60°C) rating. typical or equivalent. (2.0 to 1.0 sq mm). Honeywell AK3702 (US only), 18 AWG (1.0 sq mm) twisted pair. Non-plenum. typical or equivalent. Honeywell AK3712 (US only), 16 AWG (1.3 sq mm) twisted pair. Non-plenum. typical or equivalent. Honeywell AK3754 (US only), 14 AWG (2.0 sq mm) two conductor. Non-plenum. typical or equivalent. 19 63-4365 T7300F/Q7300H SERIES 2000 COMMERCIAL THERMOSTATS AND COMMUNICATING SUBBASES communicated to the Q7300H). The Room Temperature Step 6. Configure T7300F/Q7300H sensor provides the temperature input for the temperature control loop of the T7300F. If both local and remote Use Excel LonSpec™ Software to configure the sensors are available, the two values can be averaged and T7300F/Q7300H Thermostat/Subbase for specific the resulting value supplied to the temperature control applications. The Excel LonSpec™ User’s Guide, form 74- routine. 2937, provides software operation instructions for the personal computer. NOTE: A physical sensor (either local or remote) cannot be averaged with a network sensor. A valid value Step 7. Troubleshooting for the network sensor input gives the network sensor priority over any locally-wired sensors. 1. Check for 24 Vac power. a. Turn on power. If a valid room temperature value is not available to the b. Use a meter to check for 24 Vac power at the T7300F/Q7300H, the temperature control algorithm in the subbase. T7300F is disabled, causing the heating and cooling c. If 24 Vac is not present, check the transformer control outputs to be turned off. for secure connections and proper operation. d. If 24 Vac is present at the subbase, turn off the Network Setpoint (DestSetPoint) power. This is a center-setpoint signal sent from another 2. Check wiring. LonWorks Bus device. When received, it is used to a. Inspect all wiring connections at the Q7300H calculate the actual cooling or heating occupied setpoint. terminals and verify compliance with the job The DestSetPoint value becomes the center of the Zero site engineering drawings. Energy Band (ZEB) between the cooling and heating b. If any wiring changes are required, first be occupied setpoints. The size of the ZEB is found by taking sure to remove power from the device before the difference between the programmed heating and starting work. cooling occupied setpoints (CoolOccSpt and HeatOccSpt); c. Pay particular attention to: therefore, the actual setpoints are found as follows:  Terminal connections. Connect GND to ActualCoolSpt = DestSetPoint + (CoolOccSpt - earth ground. HeatOccSpt) / 2  Device Wiring. In hookups with A1 and A2 ActualHeatSpt = DestSetPoint - (CoolOccSpt - terminals, use A1 and A2 when contacts HeatOccSpt) / 2 are normally closed in Occupied mode. In hookups with A2, A3 terminals, use A2 During unoccupied times, the network setpoint value is not and A3 when contacts are normally open referenced, and the programmed setpoints are used in Occupied mode. instead (CoolUnoccSpt and HeatUnoccSpt). During  O/B Terminals. The Q7300H2003 occupied times, if DestSetPoint is valid, it will be used to provides O/B terminals for cool/heat override any internal setpoints. changeover. NOTE: All wiring must comply with applicable electrical Network Setpoint Offset (DestSptOffset) codes and ordinances or as specified in installation wiring diagrams. This is a setpoint adjustment signal sent from another LonWorks device. When received, it is used to bump the current setpoint value up or down. The amount of the bump is the value of DestSptOffset itself. The actual APPENDIX A: SEQUENCE OF setpoints are found as follows: OPERATIONS ActualSetpoint = CurrentSetPoint + DestSptOffset During unoccupied times, the network setpoint offset value This appendix provides the network related control is not referenced, and the programmed setpoints are used sequences of operation for the T7300F/Q7300H. For instead (CoolUnoccSpt and HeatUnoccSpt). temperature control related sequences, refer to the T7200D,E, T7300D,E,F and Q7300 Series 2000 Setpoint Limits (MinCoolSetPt and MaxHeatSetPt) Programmable Commercial Thermostat and Subbase Product Data, form no. 63-4355. User-entered setpoint limits are provided by MinCoolSetPt and MaxHeatSetPt. The occupied setpoints used in the Network Operations control algorithms are limited by these parameters. The lowest actual setpoint allowed in cool mode is equal to Room Temperature Sensor (DestRmTemp) MinCoolSetPt, and the highest actual setpoint allowed in heat mode is equal to MaxHeatSetPt. This is the room space temperature sensor. This sensor can be local (contained internally within the T7300F), remote (external but hard-wired back to the Q7300H subbase), or network (physical sensor is located elsewhere on the LonWorks Bus, and its value is 63-4365 20 T7300F/Q7300H SERIES 2000 COMMERCIAL THERMOSTATS AND COMMUNICATING SUBBASES Bypass Operation (StatusOcc, DestManOcc and If DestOccSchedule is valid, it has highest priority and determines the occupancy mode; otherwise, the status is DestBypass) determined by the internal schedule of the T7300F. StatusOcc has two possible states: occupied, or During unoccupied periods, the facility occupant can unoccupied. request that the occupied temperature control setpoints be observed by doing any one of the following: NOTE: The T7300F/Q7300H does not support Standby — Depressing the Temporary Occupied button on the mode. T7300F, or — Setting the DestManOcc network point to Bypass, or Manual Override of occupancy mode can occur from three — Setting the DestBypass network point to ON. sources and is governed by two selectable arbitration schemes. The two schemes are: Network Wins or Last-in When activated, the thermostat remains in Bypass mode Wins, (as set in OvrdPriority). until: — Bypass duration setting has timed out (BypTime), or The three sources of manual override status are: — User presses the Run button on the T7300F to switch — DestManOccPossible states: Occupied, off the Bypass mode, or Unoccupied, Bypass, Standby and Null (not active). If — Occupancy schedule switches the mode to occupied, Standby is received, it is ignored. This input source or has the highest priority in determining manual override — User sets the DestManOcc network point to occupied, status for a Network Wins arbitration scheme, or in the or unoccupied. event there is more than one source change at a time in the Last-in Wins arbitration scheme. Bypass BypassTime initiates a self-timed bypass of the control unit and expires upon completion of the defined timed period. BypassTime is the time between the pressing of the The controller then treats the bypass status of this override button at the wall module (or initiating bypass input as Null until the next change in status. mode via DestManOcc) and the return to the original — DestBypassPossible states: Bypass On, Bypass Off occupancy state. When the bypass state has been or Not Assigned (not active). This input places the activated, the bypass timer is set to BypTime (default of controller in an untimed bypass state or turns off the 180 min.). bypass mode. This source is second in priority to DestManOcc under the same arbitration schemes NOTE: A Bypass mode initiated via DestBypass does not mentioned above. cause the bypass timer to run. The DestBypass — The T7300F keypad (Temporary Occupied and signal source is assumed to be tracking the Continuous Unoccupied keys). duration peiod using its internal bypass timer. Demand Limit Control (DestDlcShed) Override Priority When the Q7300H receives a high-electrical-demand A network bypass signal always has priority over local signal, the controller applies a DlcBumpTemp amount to pushbutton induced overrides. When DestManOcc is not the current actual space temperature setpoint value. The OC_NUL, then the effective occupancy is DestManOcc, setpoint is always adjusted in the energy-saving direction. regardless of the T7300F keypad-initiated override state. This means that if the T7300F is in cooling mode, the DLC offset bumps the control point up and when in heating Continuous Unoccupied Mode mode, bumps the control point down. When returning from a DLC Shed event, the setpoint is This mode is entered when the Continuous Unoccupied gradually ramped back to its original (unbumped) value button on the T7300F is pressed. This mode can also be over a 30-minute period. entered via a network command (DestManOcc set to Unoccupied). If the controller is in this mode, it reverts to the unoccupied setpoints for temperature control. The Start-Up thermostat remains in this mode indefinitely until the Run button is pressed to exit the mode, or a network command START_UP_WAIT is the first mode after application restart is sent to clear the mode. or power-up. During START_UP_WAIT, no control algorithms are active. Occupancy Mode Arbitration (StatusOcc) NOTES:  After a controller commission via Excel LonSpec™, The T7300F/Q7300H has multiple sources for occupancy the Q7300 is reset and an application restart occurs. schedule information and, therefore, it employs an  Not all network inputs can be received during the arbitration scheme to determine the current actual mode. START_UP_WAIT period because many network Time-of-day (TOD) schedule status comes from either one variables are updated at a slower rate; therefore some of two sources: control decisions can be considered temporarily — Internal schedule contained in the T7300F, or inappropriate during START_UP_WAIT. — DestOccSchedule network input received from another LonWorks device. 21 63-4365 63-4365 22 23 63-4365 Home and Building Control Home and Building Control Honeywell Asia Pacific Inc. Honeywell Inc. Honeywell Limited-Honeywell Limitee Room 3213-3225 Honeywell Plaza 155 Gordon Baker Road Sun Hung Kai Centre P.O. Box 524 North York, Ontario No. 30 Harbour Road Minneapolis, MN 55408-0524 M2H 3N7 Wanchai Hong Kong Honeywell Latin American Region Honeywell Europe S.A. 480 Sawgrass Corporate Parkway 3 Avenue du Bourget Suite 200 1140 Brussels Sunrise, FL 33325 Belgium Printed in U.S.A. on recycled paper containing at least 10% 63-4365 J.S. 12-98 post-consumer paper fibers. www.honeywell.com

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