White Rodgers 37-6186B User Manual

WHITE-RODGERS

INSTALLATION

DESCRIPTION

COMFORT-SET 90® SERIES

HEAT PUMP INSTALLATION/CONFIGURATION

This White-Rodgers Automatic Setback Digital Thermostat uses microcomputer technology to provide precise time and

SPECIFICATIONS

1F94-371: 7 Day programming; residen-

tial applications

ELECTRICAL DATA

Electrical Rating:

20 to 30 VAC, 50/60 Hz with common

0.05 to 1.5 Amps per terminal

2.5 Amps maximum total load (all terminals combined)

PRECAUTIONS

WARNING

Do not short out terminals on gas valve or primary control to test. Short or incorrect wiring will damage thermostat and could cause personal injury and/or property damage.

Do not use on circuits exceeding specified voltage. Higher voltage will damage thermostat and could cause shock or fire hazard.

Thermostat installation and all components of the system shall conform to Class II circuits per the NEC code.

temperature control. This thermostat offers the flexibility to design heating and cooling programs that fit building needs. This

Standard Systems:

Single-stage or two-stage compressor heat pump.

THERMAL DATA

Setpoint Temperature Range:

45° to 99°F (7° to 37°C)

CAUTION

To prevent electrical shock and/or equipment damage, disconnect electric power to system at main fuse or circuit breaker box until installation is complete.

NOTE

Read all instructions thoroughly before beginning installation.

thermostat is adaptable to most 24 volt residential forced air heat pump systems with electric or fossil fuel auxiliary.

Operating Ambient Temperature:

32° to 110°F (0° to 43°C)

Operating Humidity Range:

90% non-condensing max.

Shipping Temperature Range:

-4° to 149°F (-20° to 65°C)

This thermostat is intended for use with a low voltage system. Do not use on a line voltage system.

Do not exceed ratings shown in the Specifications section, above. If in doubt about the electrical ratings of your heating/cooling system, have it inspected by a qualified heating and air conditioning contractor or licensed electrician.

All wiring must conform to local and national electrical codes and ordinances.

This control is a precision instrument, and should be handled carefully. Rough handling or distorting components could cause the control to malfunction.

Part No. 37-6186B

Replaces 37-6186A

0121

INSTALLATION

ATTENTION!

This product does not contain mercury. However, this product may replace a unit which contains mercury.

Do not open mercury cells. If a cell becomes damaged, do not touch any spilled mercury. Wearing nonabsorbent gloves, take up the spilled mercury and place into a container which can be sealed. If a cell becomes damaged, the unit should be discarded.

Mercury must not be discarded in household trash. When the unit this product is replacing is to be discarded, place in a suitable container and return to White-Rodgers at 9797 Reavis Road, St. Louis, MO, 631235398 for proper disposal.

REMOVE OLD THERMOSTAT

Shut off electricity at main fuse or circuit breaker box until installation is complete AND the new thermostat is configured properly.

Remove the front cover of the old thermostat. With wires still attached, remove wall plate from the wall.

Identify each wire attached to the thermostat using one of the labels enclosed with the

new thermostat. Disconnect the wires from the old thermostat

one at a time. DO NOT let the wires fall back into the wall.

Install the new thermostat using the following procedures.

ATTACH BASE TO WALL

Remove packing material from the thermostat. Place fingers of one hand on the center top and bottom portion of the thermostat. Grasp the base in the other hand on top and bottom center and gently pull straight out. Forcing or prying on the thermostat will cause damage to the unit.

Place the base over the hole in the wall where the wires come out and mark mounting hole locations using the base as a template. Drill 3⁄16” pilot holes, and install screw anchors in the wall.

Run wires through hole in base and attach base to wall (see fig. 1).

Insert the labeled wires into the appropriate terminals on the base and tighten the terminal screws.

CONFIGURING AND PROGRAMMING

Before the power is turned on, the thermostat must be configured to operate properly with the system. See the CONFIGURATION section of this manual.

This thermostat can be programmed for automatic temperature control. Refer to Operating Instructions for programming.

PH D SASBSCOTL

R C

W3A1E2

EW2W1Y2Y1BOG

Mounting screws

Pull wires through this opening

Insert wires into terminal holes, then tighten screws

Screw anchors

Jumper connections for remote sensor power

(Do not remove)

Figure 1. Thermostat base and terminals

HEAT PUMP TERMINAL OUTPUTS

Refer to equipment manufacturers’ instructions for specific system wiring information.

You can configure the thermostat for use with the following heat pump system types:

HEAT PUMP TYPE 1. Single-stage compressor system; gas or electric backup.

HEAT PUMP TYPE 2. Multi-stage or twocompressor system; gas or electric backup.

HEAT PUMP TYPE 3. System requiring separate signals for heat (W1, W2, W3) and cool (Y1); gas or electric backup.

THERMOSTAT TERMINALS (Upper)

L PH D SA SB SC O T

Malfunction Light X-10 Module Input Not Used Remote Sense A Remote Sense B Remote Sense C Outdoor Sensor

SYSTEM

Single-stage compressor system; gas or electric backup

Heat Pump 1*

E C R W3/A1 W2 E2/P W1 Y2 Y1 B O G

Emergency

mode first

stage

24 Volt

(Common)

24 Volt

(Hot)

Emergency mode

3rd stage

This thermostat is designed to operate a single-transformer system. If you have a twotransformer system, cut and tape off one transformer. If transformer safety circuits are in only one of the systems, remove the transformer of the system with NO safety circuits. If required, replace remaining transformer with a 75VA Class II transformer. After disconnecting one transformer, the two commons must be jumpered together.

THERMOSTAT TERMINALS (Lower)

Heat mode 3rd

stage.

Emergency mode

2nd stage.

E2 - Emergency

mode constant

output.

P - All other modes

constant output.

Heat mode

2nd stage

No Output

Use the terminal output information below to help you wire the thermostat properly for your heat pump system type. After wiring, see CONFIGURATION section for proper thermostat configuration.

Heat and cool

modes 1st

stage

(compressor)

Energized in

Heat, Off,

Emergency

Mode

Energized in

Cool Mode

Blower/Fan Energized

on call for Heat and

Cool

Multi-stage or two compressor system; gas or electric backup

E2 - Emergency

mode constant

output.

P - All other modes

constant output.

Heat Pump 2*

Emergency

mode first

stage

24 Volt

(Common)

24 Volt

(Hot)

Emergency mode

3rd stage

Emergency mode

2nd stage.

System requiring separate signals for heat (W1, W2) and cool (Y1); gas or electric backup

Heat Pump 3**

* If system does not provide connection to E, jumper W1 to E to provide Aux heating in emergency mode. ** If system does not provide connection to E, jumper W2 to E to provide Aux heating in emergency mode.

Emergency

mode first

stage

24 Volt

(Common)

24 Volt

(Hot)

Heat mode 3rd

stage.

Emergency mode

3rd stage

Heat mode 2nd

stage.

Emergency mode

2nd stage

E2 - Emergency

mode constant

output.

P - All other modes

constant output.

Heat mode

3rd stage

Heat mode

1st stage

Heat and cool

modes 2nd

stage

(compressor 2)

No Output

Heat and cool

modes 1st

stage

(compressor 1)

Cool mode 1st

stage

Energized in

Heat, Off,

Emergency

Mode

Energized in

Heat, Off,

Emergency

Mode

Energized in

Cool Mode

Energized in

Cool Mode

Blower/Fan Energized

on call for Heat and

Cool

Blower/Fan Energized

on call for Heat and

Cool

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