Honeywell Q674J Bedienungsanleitung PDF herunterladen

T874G Thermostats

and Q674F,J Subbases

for Heat Pump Systems

J.H. • Rev. 7-94 • • ©Honeywell Inc. 1994 • Form Number 69-0435—10

TRADELINE

TABLE 1—THERMOSTAT/SUBBASE SPECIFICATIONS.

Application

The T874G Thermostats and Q674F,J Subbases pro-

vide 24 to 30 Vac control of 2-stage heating and 1-stage cool-

ing heat pump systems with automatic changeover. Stage 1

heat and cool anticipation is fixed voltage type; stage 2 heat

anticipation is adjustable (except as noted). See Table 1 for

specific T874G/Q674F,J combinations and specifications.

Installation Instructions for the Trained Service Technician.

Thermostat/

Subbase

Thermostat/

Subbase

Model LED

Switching

See

Package Numbers Indication

System Fan Changeover Comments

Fig.

Y594G1252 T874G1246/

Q674F1212

AUX.HT.,

EM.HT.

EM.HT.-OFF-

HEAT-AUTO-

COOL

AUTO-

AUTO,

COOL

TRADELINE

— T874G1246/

Q674F1410

AUX.HT.,

EM.HT.

-OFF-

HEAT-AUTO-

COOL

AUTO-

AUTO,

COOL

Separate W1 and Y1

terminals; TRADELINE

subbase.

Y594G1419 T874G1642/

Q674F1444

AUX.HT.,

EM.HT.,

CHECK

OFF-EM.HT.-

HEAT-AUTO-

COOL

AUTO-

AUTO,

HEAT OR

COOL

SUPER TRADELINE

;

includes factory-installed

jumper across W1 and Y1;

fixed stage 2 heat anticipation.

Y594G1476

T874G1741/

Q674F1477

Isolated CHECK LED

includes jumper for connecting

X2 terminal to X or R for

power.

Y594G1534

T874G1824/

Q674F1477

Y594G1526 T874G1626/

Q674F1436

AUX.HT.,

EM.HT.

OFF-EM.HT.-

HEAT-AUTO-

COOL

AUTO-

AUTO,

HEAT

TRADELINE

— T874D1165

T874E1016/

Q674F1543

(RED)

OFF-EM.HT.-

HEAT-AUTO-

COOL

AUTO-

AUTO TRADELINE

subbase; exact

replacement for York model

no. 2TB04700524. Thermostat

not included; order separately.

Y594G1567 T874G1865/

Q674J1209

EM.HT. EM.HT.-

AUTO-OFF

AUTO-

AUTO,

COOL

TRADELINE

; exact

replacement for York model

nos. 2TH11702424 and

6TH11702424.

Y594G1575

T874G1873/

Q674J1225

EM.HT. EM.HT.-

AUTO-OFF

AUTO-

AUTO,

COOL

TRADELINE

; exact

replacement for York model

nos. 2TH11702424 and

6TH11702424.

Y594G1633 T874G1972/

Q674F1584

AUX.HT.,

EM.HT.

OFF-EM.HT.-

HEAT-AUTO-

COOL

AUTO-

AUTO,

HEAT OR

COOL

TRADELINE

EM.HT. also shows compressor malfunction.

When switch is in EM. HT. position, the emergency heat will operate continuously until system switch is moved to another position.

Thermostat is white and subbase is gray.

Sold only in Australia; degrees C.

LED indicator is not labeled but may be connected per user's requirements. See Fig. 9.

M3375

1 2 3 4 5 6 ... 11 12

Inhaltsverzeichnis

Seite 1 - T874G Thermostats

T874G Thermostatsand Q674F,J Subbasesfor Heat Pump SystemsJ.H. • Rev. 7-94 • • ©Honeywell Inc. 1994 • Form Number 69-0435—10TRADELINE®T

Seite 2 - Operation

69-0435—10 10

Seite 3 - Fig. 4—Wiring Connections

11 69-0435—10

Seite 4 - 69-0435—10 4

Home and Building Control Home and Building ControlHoneywell Honeywell Limited—Honeywell Limitée1985 Douglas Drive North 35 Dynamic DriveGolden Valley

Seite 5 - 5 69-0435—10

69-0435—10 2IMPORTANT: Thermostats are calibrated at the factory byusing subbases mounted at true level. Inaccurate sub-base leveling will cause therm

Seite 6 - 69-0435—10 6

3 69-0435—10Fig. 2—Installation of Q674 Subbase on wall.WIRES THROUGHWALL OPENINGWALL WALLANCHORS(2)SUBBASEMOUNTINGHOLESMOUNTINGSCREWS (2)M926Fig. 3—S

Seite 7

69-0435—10 4Fig. 5—Internal schematic and typical wiring diagram for Y594G1252 (T874G1246/Q674F1212); autochangeover in cooling.H2FALLL1 (HOT)L21RW3W2

Seite 8 - 50 60 70 80

5 69-0435—10Fig. 7—Internal schematic and typical wiring diagram for Y594G1419 (T874G1642/Q674F1444),Y594G1476 (T874G1741/Q674F1477) and Y594G1534 (T8

Seite 9 - Calibration

69-0435—10 6Fig. 8—Internal schematic and typical wiring diagram for Y594G1526 (T874G1626/Q674F1436); autochangeover in heating.M1592A(HOT) L1 L21LAC

Seite 10 - 69-0435—10 10

7 69-0435—10Fig. 10—Internal schematic and typical wiring diagram for Y594G1567 (T874G1865/Q674J1209) andY594G1575 (T874G1873/Q674J1225); auto changeo

Seite 11 - 11 69-0435—10

69-0435—10 8MOUNTING THE THERMOSTAT1. Remove the thermostat cover by pulling the bot-tom edge of the cover away from the base until it snapsfree of th

Seite 12

9 69-0435—10CheckoutHEATINGMove the system switch on the Q674 Subbase toHEAT. Move the heating set point lever on the T874Thermostat about 10° F [6° C

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Honeywell Q674J Bedienungsanleitung

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