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Manual Honeywell T874G

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  • Honeywell T874G - page 1

    X-XX UL INST ALLA TION INSTRUCTIONS Copyright © 1995 Honeywell Inc. • • All Rights Reserved T874G,R Multistage Heat Pump Thermostats and Q674F ,J,L Subbases APPLICA TION The T874G,R Thermostats with Q674F,J,L Subbases provide 24 to 30 Vac control of a two-stage heating/one- stage cooling heat pump system. See Table 1 for thermostat/subbase spe ...

  • Honeywell T874G - page 2

    69-0268—1 1 2 T874G,R MULTISTAGE HEAT PUMP THERMOSTATS AND Q674F,J,L SUBBASES CA UTION 1. Disconnect power supply to prevent electrical shock or equipment damage. 2. Run wires as close as possible to the subbase. To prevent interference with the thermostat linkage, keep wire length to a minimum. Push excess wire back into the hole and plug the ho ...

  • Honeywell T874G - page 3

    69-0268—1 1 3 T874G,R MULTISTAGE HEAT PUMP THERMOSTATS AND Q674F,J,L SUBBASES H1 FALL RISE CO L1 (HOT) L2 1 3 C1 RISE 1 2 2 3 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. TERMINAL LABELED C/X ON SOME MODELS. W3 TERMINAL ON SOME MODELS ONLY. C1 ANTICIPATOR H1 ANTICIPATOR FAN SWITCH AUTO ON SYSTEM SWITCH AUTO HEAT OFF ...

  • Honeywell T874G - page 4

    69-0268—1 1 4 T874G,R MULTISTAGE HEAT PUMP THERMOSTATS AND Q674F,J,L SUBBASES H1 FALL H2 FALL CO RISE C1 RISE L1 (HOT) L2 1 2 1 2 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. REMOVE JUMPER FOR INDEPENDENT CONTROL OF W1 AND E TERMINALS. THERMOSTAT SUBBASE SYSTEM COMPONENTS H1 ANTICIPATOR H2 ANTICIPATOR C1 ANTICIPATOR ...

  • Honeywell T874G - page 5

    69-0268—1 1 5 T874G,R MULTISTAGE HEAT PUMP THERMOSTATS AND Q674F,J,L SUBBASES H2 FALL H1 FALL C1 L1 (HOT) L2 1 2 2 1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. FACTORY-INSTALLED JUMPER. THERMOSTAT SUBBASE SYSTEM COMPONENTS H1/C1 ANTICIPATOR H2 ANTICIPATOR SYSTEM SWITCH FAN SWITCH AUTO ON OFF HEAT EM. HT. COOL FAN ...

  • Honeywell T874G - page 6

    69-0268—1 1 6 T874G,R MULTISTAGE HEAT PUMP THERMOSTATS AND Q674F,J,L SUBBASES H2 FALL H1 FALL C1 L1 (HOT) L2 1 1 2 2 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. REMOVE JUMPER FOR INDEPENDENT CONTROL OF W1 AND E TERMINALS. THERMOSTAT SUBBASE SYSTEM COMPONENTS H1/C1 ANTICIPATOR H2 ANTICIPATOR RESET SYSTEM SWITCH FAN ...

  • Honeywell T874G - page 7

    69-0268—1 1 7 T874G,R MULTISTAGE HEAT PUMP THERMOSTATS AND Q674F,J,L SUBBASES H1 FALL C L1 (HOT) L2 1 EM. HT. LED (RED) AUX. HT. LED (GRN) W3 O L G R W2 E X X2 B W1 Y AUX. HT. RELAY EM. HT. RELAY HEAT CHANGEOVER VALVE W1 RELAY COMPRESSOR RELAY W3 RELAY COOL CHANGEOVER VALVE COMPRESSOR MONITOR FAN RELAY H2 FALL H1 ANTICIPATOR C ANTICIPATOR H2 ANTI ...

  • Honeywell T874G - page 8

    69-0268—1 1 8 T874G,R MULTISTAGE HEAT PUMP THERMOSTATS AND Q674F,J,L SUBBASES M5072A (HOT) L1 L2 1 LACO CHP Y B E O G L X W2 W3 R ODT 1 RTD 1 EHR 1 RTD 2 ODT 2 EHR 2 RTD 3 RD SYSTEM MONITOR FAN RELAY COMPRESSOR CONTACTOR COOL CHANGEOVER VALVE EM. HT. RELAY RTD 1 AUX. HT. LED (GREEN) EM. HT. LED (RED) FAN SWITCH ON AUTO SYSTEM SWITCH EM. HT. HEAT ...

  • Honeywell T874G - page 9

    69-0268—1 1 9 T874G,R MULTISTAGE HEAT PUMP THERMOSTATS AND Q674F,J,L SUBBASES Fig. 10. Internal schematic and typical wiring diagram for T874R/Q674L in heat pump system. Includes EM. HT. and AUX. HT. LEDs. L1 (HOT) L2 1 X L W2 EM. HT. LED (RED) AUX. HT. LED (GRN) AUX. HT. RELAY FAN RELAY "B" RELAY G COOL CHANGEOVER VALVE EM. HT. RELAY C ...

  • Honeywell T874G - page 10

    69-0268—1 1 10 T874G,R MULTISTAGE HEAT PUMP THERMOSTATS AND Q674F,J,L SUBBASES M1627A R W E X L1 (HOT) L2 COOL EM. HT. HEAT SYSTEM SWITCH AUTO ON FAN SWITCH 1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. REMOVE JUMPER FOR INDEPENDENT CONTROL OF W AND E TERMINALS. 1 AUXILIARY HEAT LED (YELLOW) C T COMPRESSOR CONTACTO ...

  • Honeywell T874G - page 11

    69-0268—1 1 11 T874G,R MULTISTAGE HEAT PUMP THERMOSTATS AND Q674F,J,L SUBBASES THERMOSTAT MOUNTING POST (2) M3266 50 60 70 80 HEAT THERMOSTAT MOUNTING SLOTS (2) SUBBASE THERMOSTAT CAPTIVE MOUNTING SCREWS (2) Fig. 14. Mounting thermostat on subbase. SETTING T emperature Setting The T874R has one setpoint lever that controls both heating and coolin ...

  • Honeywell T874G - page 12

    69-0268—1 1 12 T874G,R MULTISTAGE HEAT PUMP THERMOSTATS AND Q674F,J,L SUBBASES Home and Building Control Honeywell Limited-Honeywell Limitée 35 Dynamic Drive Scarborough, Ontario M1V 4Z9 69-0268—1 1 J.S. Rev . 12-95 If the setpoint lever setting and the thermometer reading do not agree, follow the procedure below. 쐃 Remove thermostat cover b ...

Manufacturer Honeywell Category Thermostat

Documents that we receive from a manufacturer of a Honeywell T874G can be divided into several groups. They are, among others:
- Honeywell technical drawings
- T874G manuals
- Honeywell product data sheets
- information booklets
- or energy labels Honeywell T874G
All of them are important, but the most important information from the point of view of use of the device are in the user manual Honeywell T874G.

A group of documents referred to as user manuals is also divided into more specific types, such as: Installation manuals Honeywell T874G, service manual, brief instructions and user manuals Honeywell T874G. Depending on your needs, you should look for the document you need. In our website you can view the most popular manual of the product Honeywell T874G.

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A complete manual for the device Honeywell T874G, how should it look like?
A manual, also referred to as a user manual, or simply "instructions" is a technical document designed to assist in the use Honeywell T874G by users. Manuals are usually written by a technical writer, but in a language understandable to all users of Honeywell T874G.

A complete Honeywell manual, should contain several basic components. Some of them are less important, such as: cover / title page or copyright page. However, the remaining part should provide us with information that is important from the point of view of the user.

1. Preface and tips on how to use the manual Honeywell T874G - At the beginning of each manual we should find clues about how to use the guidelines. It should include information about the location of the Contents of the Honeywell T874G, FAQ or common problems, i.e. places that are most often searched by users in each manual
2. Contents - index of all tips concerning the Honeywell T874G, that we can find in the current document
3. Tips how to use the basic functions of the device Honeywell T874G - which should help us in our first steps of using Honeywell T874G
4. Troubleshooting - systematic sequence of activities that will help us diagnose and subsequently solve the most important problems with Honeywell T874G
5. FAQ - Frequently Asked Questions
6. Contact detailsInformation about where to look for contact to the manufacturer/service of Honeywell T874G in a specific country, if it was not possible to solve the problem on our own.

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