®
I N T E G R A T E D C O M F O R T S O L U T I O N S ™
9620
H
DIGITAL
PROGRAMMABLE
THERMOSTAT
HEAT PUMP
7 Day Programmable
2 Heat / 2 Cool
User’s Manual
Quick Start
Installation and
Programming
110-732E
W
A
R
R
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Y |
T |
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AN |
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As an ENERGY STAR® partner, Maple Chase has
determined that this thermostat product meets ©2001 Maple Chase Company the ENERGY STAR® guidelines for energy efficiency.
! Important Safety Information
WARNING:
•Always turn off power at the main power source by unscrewing fuse or switching circuit breaker to the off position before installing, removing, cleaning, or servicing thermostat.
•Read all of the information in this manual before installing or programming this thermostat.
•This is a 24V AC low voltage thermostat. Do not install on voltages higher than 30V AC.
•All wiring must conform to local and national building and electrical codes and ordinances.
•Do not short (jumper) across terminals on the gas valve or at the system control to test installation. This will damage the thermostat and void the warranty.
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Features
•Four preprogrammed ENERGY STAR® setpoints for each day of the week
•Quickset™ programming for quickly programming all days of the week simultaneously
•Energy Efficient Recovery (EER™)
•Residual cooling for added air conditioning efficiency
•Two AA ENERGIZER® brand batteries retain program memory, even during power outages
•Low battery indicator
•Multi-colored LED indicators for system status
•Zone compatible as master thermostat
•Fahrenheit/Celsius display option
•Programmable from 45°F (7°C) to 90°F (32°C)
•Accuracy within ±1 degree
•Adjustable temperature differential: 1-3 degrees
•Maintains summer and winter programming
Step 1: Replacing Existing Thermostat
1.Turn off power to heating and cooling system.
2.Remove cover of old thermostat to expose wires. (Figure 1)
FIGURE 1
3.Disconnect wires one at a time from existing terminals. use enclosed labels to mark existing wires. Refer to cross references in Table 1 if existing wiring does not directly match the labels.
•If you have any questions about cross referencing the old terminal to the new label, reference your equipment installation manual, a licensed contractor, or call Robertshaw Tech Support (800) 445-8299.
4. Remove existing thermostat base from wall.
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TABLE 1
Old Terminal |
New Label |
Description |
R, V-VR or VR-R |
R |
24 VAC |
Y, Y1 or M |
Y1 |
Stage 1 Cooling/Heating Circuit |
O or R |
O |
Reversing Valve (Cooling Mode) |
B |
B |
Reversing Valve (Heating Mode) |
G or F |
G |
Fan Contactor Circuit |
Y2 |
Y2 |
2nd Stage Cooling Circuit |
W1 or W2 or W-U |
W2 |
2nd Stage Heating Circuit |
L or X |
L |
System Monitor LED |
E |
E |
Emergency Heating Circuit |
C, X or B |
C |
24 VAC Transformer Common Side |
NOTE: THIS THERMOSTAT REQUIRES A 24V AC COMMON WIRE FOR PROPER OPERATION.
5.After labeling wires, remove wires from terminals.
6.Remove existing thermostat base from wall.
7.Refer to the following section for instructions on how to install thermostat.
Recycling Thermostat
If this thermostat is replacing a thermostat that contains mercury in a sealed tube, do not place your old thermostat in the garbage. Contact your local waste management authority for instructions regarding proper disposal of the thermostat. If you have any questions, call Robertshaw technical support at 1-800-445-8299.
Step 2: Installing Model 9620 Thermostat
NOTE: FOR NEW INSTALLATIONS, MOUNT THERMOSTAT ON INSIDE WALL, 4-5 FEET ABOVE THE FLOOR. DO NOT INSTALL BEHIND A DOOR, IN A CORNER, NEAR AIR VENTS, IN DIRECT SUNLIGHT, OR NEAR ANY HEAT OR STEAM GENERATING FIX-
TURES. INSTALLATION AT THESE PLACES WILL AFFECT THERMOSTAT OPERATION.
IMPORTANT: THIS THERMOSTAT IS COMPATIBLE WITH 100% LOCKOUT SYSTEMS. TO RESET THE SYSTEM, TURN THERMOSTAT TO OFF POSITION FOR AT LEAST 60 SECONDS.
1.Turn off power to the heating and cooling systems.
2.Place COOL-OFF-HEAT-EM in OFF position.
COOL-OFF-HEAT-EM
PROG
MAN
AUX CHECK EMER
>
>
SET PROG/MAN COOL-OFF-HEAT-EM 
AUTO - ON
3
3.Place 
AUTO-ON switch into AUTO position.
4.Remove the cover using a coin or screwdriver (Figure 2).
EM
FIGURE 2
5.Place thermostat against the wall at desired location. Make sure wires will feed through opening on base of thermostat.
6.Mark placement of mounting holes (Figure 3). Set base aside.
MOUNTING HOLES
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C L R |
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AM |
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PROG |
Y2 |
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PM |
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Y |
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MAN |
1 |
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MORN DAY EVE NITE EER |
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E |
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CHANGE |
SET |
PROG/MAN |
G |
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W2 |
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O |
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B |
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COOL OFF HEAT EM |
FAN |
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WIRE OPENING |
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FIGURE 3
7.Drill the marked holes using a 3/16" drill bit. NOTE: Enclosed plastic anchors do not require a drilled hole for drywall.
8.Tap plastic anchors into the holes.
9.Align base with plastic anchors and feed wires through opening (Figure 3).
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10.Secure base to wall with supplied screws.
11.Terminal screws are loosened. Insert wires into terminal strip (Figure 4) matching the label to the corresponding terminal (see Wiring Diagrams below). Tighten screws.
FIGURE 4
9620 WIRING SAMPLE #1
Typical heat pump with cool active reversing valve and auxiliary/emergency heat.
C 
L 
R 
Y2 
Y1 
E 
G 
W2 
O 
B
9620 WIRING SAMPLE #2
Typical heat pump with heat active reversing valve and auxiliary/emergency heat.
C 
L 
R 
Y2 
Y1 
E 
G 
W2 
O 
B
9620 WIRING SAMPLE #3
Typical heat pump with heat active reversing valve and auxiliary/emergency heat. Does not have separate wire for emergency heat (jump W2 & E).
C 
L 
R 
Y2 
Y1 
E 
G 
W2 
O 
B
Jumper
9620 WIRING SAMPLE #4
Typical heat pump with cool active reversing valve, auxiliary/emergency heat and second stage of cooling. System fault indicator connected (L terminal).
C |
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L |
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R |
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Y2 |
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Y1 |
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E |
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G |
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W2 |
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O |
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B |
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