WHITE-RODGERS
COMFORT-SET® 90 SERIES
MULTI-STAGE/HEAT PUMP INSTALLATION/CONFIGURATION
INSTALLATION
DESCRIPTION
This White-Rodgers Automatic Setback Digital Thermostat uses microcomputer technology to provide precise time and temperature control. This thermostat offers
the flexibility to design heating and cooling |
commercial forced air multi-stage or heat |
programs that fit building needs. This |
pump systems with electric or fossil fuel |
thermostat is adaptable to most 24 volt |
auxiliary. |
SPECIFICATIONS
1F93-380: 7 Day programming; commercial 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)
Standard Systems: |
Operating Ambient Temperature: |
Multi-stage gas, oil, electric. |
32° to 110°F (0° to 43°C) |
Single-stage or two-stage compressor |
Operating Humidity Range: |
heat pump. |
90% non-condensing max. |
THERMAL DATA |
Shipping Temperature Range: |
Setpoint Temperature Range: |
-4° to 149°F (-20° to 65°C) |
45° to 99°F (7° to 37°C) |
|
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.
! 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.
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. 37-6066B
Replaces 37-6066A
0120
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.
2
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 wires into the terminals on the base using the appropriate wiring diagram 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.
4
3
1
1Mounting screws
2Pull wires through this opening
3Insert wires into terminal holes, then tighten screws
4Screw anchors
5Jumper connections for remote sensor power
(Do not remove)
L PH D SA SB SC OT |
1
R
C
E C R W3A1 W2 E2P W1 Y2 Y1 B O G
5
Figure 1. Thermostat base and terminals
2
MULTI-STAGE TERMINAL OUTPUTS
Refer to equipment manufacturers’ instructions for specific system wiring information.
You can configure the thermostat for use with either multi-stage electric heat systems or multi-stage gas systems. When configured for electric heat, the G terminal (blower/fan) will be energized on a call for heat.
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.
Use the terminal output information below to help you wire the thermostat properly for your multi-stage system. After wiring, see CONFIGURATION section for proper thermostat configuration.
|
|
THERMOSTAT TERMINALS (Upper) |
|
|
||
L |
PH |
D |
SA |
SB |
SC |
OT |
Malfunction Light |
X-10 Module Input |
Not Used |
Remote Sense A |
Remote Sense B |
Remote Sense C |
Outdoor Sensor |
|
|
|
|
|
THERMOSTAT TERMINALS (Lower) |
|
|
|
|
|||
SYSTEM |
E |
C |
R |
W3/A1 |
W2 |
E2/P |
W1 |
Y2 |
Y1 |
B |
O |
G |
|
|
|
|
Damper terminal |
|
|
|
|
|
Energized in |
|
Blower/Fan Energized |
|
|
24 Volt |
24 Volt |
Heat mode 2nd |
|
Heat mode |
Cool mode |
Cool mode |
Energized in |
on call for Cool (and |
||
Multi-Stage |
No Function |
energized in |
No function |
Heat and Off |
||||||||
|
|
(Common) |
(Hot) |
occupied mode |
stage |
|
1st stage |
2nd stage |
1st stage |
Mode |
Cool Mode |
Heat if confgured to |
|
|
|
|
|
|
|
|
|
|
Electric Heat). |
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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) and cool (Y1); gas or electric backup.
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.
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.
|
|
|
|
THERMOSTAT TERMINALS (Upper) |
|
|
|
|
|
|
|
|
|
|||||||
L |
PH |
|
|
D |
|
SA |
|
|
SB |
|
SC |
|
OT |
|
|
|
|
|
|
|
Malfunction Light |
X-10 Module Input |
Not Used |
Remote Sense A |
Remote Sense B |
|
Remote Sense C |
|
Outdoor Sensor |
|
|
|
|
|
|
||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||
|
|
|
|
|
|
|
|
|
|
THERMOSTAT TERMINALS (Lower) |
|
|
|
|
||||||
SYSTEM |
|
E |
C |
R |
W3/A1 |
|
W2 |
E2/P |
W1 |
|
Y2 |
Y1 |
B |
O |
G |
|||||
Single-stage compressor system; gas or electric backup |
|
|
|
|
|
|
|
|
|
|
|
|||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Heat mode |
|
|
|
|
|
|
|
Heat mode 3rd |
E2 - Emergency |
|
|
|
Heat and cool |
Energized in |
|
|
||
|
|
1st stage. |
|
|
|
|
Damper terminal |
|
mode constant |
|
|
|
|
Blower/Fan Energized |
||||||
Heat Pump 1* |
|
24 Volt |
24 Volt |
|
stage. |
Heat mode |
|
No Output |
modes 1st |
Heat, Off, |
Energized in |
|||||||||
|
Emergency |
(Common) |
(Hot) |
energized in |
|
Emergency mode |
output. |
2nd stage |
|
stage |
Emergency |
Cool Mode |
on call for Heat and |
|||||||
|
|
mode 1st |
occupied mode |
|
P - All other modes |
|
|
Cool |
||||||||||||
|
|
stage. |
|
|
|
|
|
|
|
2nd stage |
constant output. |
|
|
|
(compressor) |
Mode |
|
|
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||||||
Multi-stage or two compressor system; gas or electric backup |
|
|
|
|
|
|
|
|
|
|||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
E2 - Emergency |
|
Heat and cool |
Heat and cool |
Energized in |
|
|
||
|
|
Emergency |
|
|
|
|
Damper terminal |
|
|
|
mode constant |
|
|
Blower/Fan Energized |
||||||
Heat Pump 2* |
|
24 Volt |
24 Volt |
|
Emergency mode |
Heat mode |
|
modes 2nd |
modes 1st |
Heat, Off, |
Energized in |
|||||||||
|
mode 1st |
(Common) |
(Hot) |
energized in |
|
2nd stage |
output. |
3rd stage |
|
stage |
stage |
Emergency |
Cool Mode |
on call for Heat and |
||||||
|
|
stage |
occupied mode |
|
P - All other modes |
|
Cool |
|||||||||||||
|
|
|
|
|
|
|
|
|
|
(compressor 2) |
(compressor 1) |
Mode |
|
|||||||
|
|
|
|
|
|
|
|
|
|
|
|
constant output. |
|
|
|
|||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||||||
System requiring separate signals for heat (W1, W2) and cool (Y1); gas or electric backup |
|
|
|
|
|
|
||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Heat mode 2nd |
E2 - Emergency |
|
|
|
|
Energized in |
|
|
||
|
|
Emergency |
|
|
|
|
Damper terminal |
|
mode constant |
|
|
|
|
|
Blower/Fan Energized |
|||||
Heat Pump 3** |
|
24 Volt |
24 Volt |
|
stage. |
Heat mode |
|
No Output |
Cool mode |
Heat, Off, |
Energized in |
|||||||||
|
mode 1st |
(Common) |
(Hot) |
energized in |
|
Emergency mode |
output. |
1st stage |
|
1st stage |
Emergency |
Cool Mode |
on call for Heat and |
|||||||
|
|
stage |
occupied mode |
|
P - All other modes |
|
|
Cool |
||||||||||||
|
|
|
|
|
|
|
|
|
|
2nd stage. |
constant output. |
|
|
|
|
Mode |
|
|
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
* 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.
3
Loading...