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Manual Honeywell Q674A-E

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  • Honeywell Q674A-E - page 1

    1 60-1165—6 Q674 Switch Positions Model System Fan A Heat-Auto-Cool Auto-On B Heat-Off-Cool Auto-On C Off-Auto Auto-On D None None E Off-Heat-Auto-Cool Auto-On G Off-Auto None T874A-F Multistage Thermostats/Q674A-E,G Subbases TRADELINE ® Installation Instructions for the Trained Service Technician. Operation On a 2-heat thermostat, the two stage ...

  • Honeywell Q674A-E - page 2

    2 60-1165—6 Fig. 1—Installation of subbase on outlet box. 2. Pull electrical wires through the cover plate (if use d) and subbase cable opening (Fig. 3). See Wiring the Subbase section before pulling any wires. IMPORTANT: Use 18 gauge, color-coded thermostat cable for proper wiring. For a wall installation, hold subbase in position and mark hol ...

  • Honeywell Q674A-E - page 3

    3 60-1165—6 3. Firmly tighten each terminal screw. 4. Fit wires as close as possible to the subbase. Push exc ess wire back into the hole. 5. Plug hole with nonflammable insulation to prevent drafts from affecting the thermostat. Fig. 5—Jumper RC and RH for single trans- former system. Strip wire 3/4 in. [19 mm]. Fig. 6—Jumper adjacent termin ...

  • Honeywell Q674A-E - page 4

    4 60-1165—6 Fig. 8—T874A-D/Q674A in standard heating/cooling system. Fig. 9—T874C,D/Q674B in standard heating/cooling system with separate transformers for heating and cooling. H1 FALL L1 (HOT) L2 1 RH W1 W2 O G Y2 Y1 RC HEAT RELAY 2 HEAT RELAY 1 HEAT OFF COOL SYSTEM SWITCH H1 ANTICIPATOR C1 ANTICIPATOR AUTO ON FAN SWITCH 2 1 POWER SUPPLY. PR ...

  • Honeywell Q674A-E - page 5

    5 60-1165—6 Fig. 10—T874D/Q674B in standard heating/cooling system with single transformer for heating and cooling. Exact replacement for York model no. 2TB04700324. Fig. 11—T874D,E,F/Q674C in standard heating/cooling system. ...

  • Honeywell Q674A-E - page 6

    6 60-1165—6 Fig. 12—T874A,D,F/Q674D in standard heating/cooling system. Fig. 13—T874D/Q674E in standard heating/cooling system. ...

  • Honeywell Q674A-E - page 7

    7 60-1165—6 Fig. 14—T874A-F/Q674G in standard heating/cooling system. Fig. 15—T874C/Q674B in standard application. ...

  • Honeywell Q674A-E - page 8

    8 60-1165—6 Fig. 16—Typical Q674 terminal designations. The thermostat and subbase used determines the number of system components controlled. TEMPERATURE LEVER STOPS Some thermostats have factory-installed temperature lever locking screws (Fig. 17) and/or stop brackets (Fig. 18). Use these only if the HEAT and COOL tempera- ture set point leve ...

  • Honeywell Q674A-E - page 9

    9 60-1165—6 9. Firmly tighten the mounting screw. 10. If the HEAT and COOL levers are to be locked in place at a specific temperature, use the two insulated head screws supplied instead of the two adjustable lever stop brackets. CAUTION Do not use standard screws that provide metal-to- metal contact with the stop brackets. Short circuit and poten ...

  • Honeywell Q674A-E - page 10

    10 60-1165—6 2. Move the system switch to AUTO or HEAT (if used) . 3. After one minute, read the ammeter and record the reading: Stage 1: __________ amperes. Stage 2: __________ amperes. NOTE: If equipment cycles too fast, set the indicator to a higher current rating, not more than one-half division at a time, and recheck cycle rate. Most convent ...

  • Honeywell Q674A-E - page 11

    11 60-1165—6 Calibration THERMOSTAT T874 Thermostats are accurately calibrated at the factory. They do not have provision for field calibration. THERMOMETER The thermometer in the thermostat has been accurately calibrated at the factory. The thermometer should need ad- justment only if it has been dropped or shifted due to mishan- dling. If the s ...

  • Honeywell Q674A-E - page 12

    12 60-1165—6 www.honeywell.com/yourhome Automation and Control Solutions Honeywell International Inc. Honeywell Limited—Honeywell Limitée 1985 Douglas Drive North 35 Dynamic Drive Golden Valley, MN 55422 Scarborough, Ontario M1V 4Z9 ...

Manufacturer Honeywell Category Thermostat

Documents that we receive from a manufacturer of a Honeywell Q674A-E can be divided into several groups. They are, among others:
- Honeywell technical drawings
- Q674A-E manuals
- Honeywell product data sheets
- information booklets
- or energy labels Honeywell Q674A-E
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 Q674A-E.

A group of documents referred to as user manuals is also divided into more specific types, such as: Installation manuals Honeywell Q674A-E, service manual, brief instructions and user manuals Honeywell Q674A-E. 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 Q674A-E.

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A complete manual for the device Honeywell Q674A-E, 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 Q674A-E by users. Manuals are usually written by a technical writer, but in a language understandable to all users of Honeywell Q674A-E.

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 Q674A-E - 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 Q674A-E, 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 Q674A-E, that we can find in the current document
3. Tips how to use the basic functions of the device Honeywell Q674A-E - which should help us in our first steps of using Honeywell Q674A-E
4. Troubleshooting - systematic sequence of activities that will help us diagnose and subsequently solve the most important problems with Honeywell Q674A-E
5. FAQ - Frequently Asked Questions
6. Contact detailsInformation about where to look for contact to the manufacturer/service of Honeywell Q674A-E in a specific country, if it was not possible to solve the problem on our own.

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