Robertshaw 9515 User manual

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 pro-
gramming 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.
1
W
A
R
R
A
N
T
Y
INTEGRATED COMFORT SOLUTIONS
™
DIGITAL
NON-PROGRAMMABLE
THERMOSTAT
9515
®
GAS
G
ELECTRIC
E
2 Heat / 2 Cool
User’s Manual
Quick Start
Installation
110-752

Features
• Multi stage heating and cooling control
• Zone system compatible as a master thermostat
• Auxiliary heat
• Fahrenheit/Celsius display option
• Adjustable from 45°F (7°C) to 90°F (32°C)
• Accuracy within ± 1 degree
• Adjustable 1st stage temperature differential: 1°-3°,
2nd stage temperature differential: 2°-6° F
• Automatic heating shutdown if temperature exceeds 90°F (32°C)
• Battery free memory storage
Replacing Existing Thermostat
1. Turn off power to heating and cooling system.
2. Remove cover of old thermostat to expose wires.
Do not disconnect wires (Figure 1).
3. Label wires per Table 1.
Table 1
Old Label New Label Description
R, V-VR or VR-R R 24 VAC, Return
Y, Y1 or M Y1 1st Stage Cooling
Circuit
O or R O Reversing Valve,
(Cooling Mode)
B B Reversing Valve
(Heating Mode)
F or G G Fan Control Relay
Y2 Y2 2nd Stage Cooling
Circuit
W2 or W-U W2 2nd Stage Heating
Control
C, X or B C 24 VAC, Transformer
Common Side
W1 or W W1 1st Stage Heating
Circuit
*NOTE: THIS THERMOSTAT REQUIRES A 24V COMMON WIRE FOR PROPER OPERATION.
2

4. After labeling wires, remove wires from terminals.
5. Remove existing thermostat base from wall.
6. Refer to the following section for instructions on how to
install thermostat.
Installing Model 9515 Thermostat
NOTE: FOR NEW INSTALLATIONS, MOUNT THERMOSTAT ON INSIDE WALL, 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 FIXTURES. INSTALLATION AT THESE PLACES WILL AFFECT THERMOSTAT OPERATION.
1. Turn power off to the heating
and cooling systems.
2. Place COOL-OFF-HEAT
in OFF position.
3. Place AUTO-ON switch
into AUTO position.
4. Remove the cover using a coin
or screwdriver (Figure 2).
3
COOL-OFF-HEAT AUTO - ON
>
>
AUX
COOL-OFF-HEAT
AUTO - ON
Figure 1
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.
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 wall.
9. Align base with plastic anchors and feed wires
through opening.
10. Secure base to wall with supplied screws.
4
Batteries NOT Required.
Mounting Holes

11. Connect wires to terminal strip (refer to wiring diagrams).
Make sure wire connections are secure.
12. Set the °F/°C switch to either °F for Fahrenheit display
or °C for Celsius display readout (Figure 4).
Figure 4
13. Set the GAS/ELEC switch to either GAS for a gas/oil heating system
or ELEC for an electric heating system.
14. Replace cover onto thermostat by snapping into place.
15. Turn on power to system. Test thermostat as described
in the following section.
5
Batteries NOT Required.
°F/°C Switch

Operation
Setting or Changing the Setpoint Temperature
1. Press either the or button.
The display will show the current
temperature setpoint.
2. Press either the or button
to adjust the temperature setting
either up or down.
The display will return to the room temperature display five seconds after
the last input and the new setpoint will be saved.
Changing Temperature Differential
IMPORTANT: The temperature differential is factory set at 1 (1°). This
means that whenever the room temperature changes by one degree
Fahrenheit from the temperature setting, the system will turn on. If the
system turns on too often, increase the temperature differential.
1. Press both and buttons
at the same time and hold for one
second.
2. Press either the or button
to adjust the 1st stage temperature
differential up or down.
3. After 5 seconds DIFF will begin to flash on the display
indicating 2nd stage differential value.
4. Press either the or button
to adjust the 2nd stage temperature
differential up or down.
The display will return to the room temperature
five seconds after the last input.
6
>
>
>
>
>
>
COOL-OFF-HEAT AUTO - ON
>
>
AUX
C
>
>
COOL-OFF-HEAT AUTO - ON
>
>
AUX
>
>
>
>
>
>

7
To Test Thermostat
WARNING: DO NOT SHORT (JUMPER) ACROSS TERMINALS OF GAS VALVE OR
SYSTEM CONTROL TO TEST OPERATION. THIS WILL DAMAGE THE THERMOSTAT AND
VOID YOUR WARRANTY.
CAUTION: DO NOT SWITCH SYSTEM TO COOL IF THE TEMPERATURE IS BELOW 50°F (10°C).
THIS CAN DAMAGE THE AIR CONDITIONING SYSTEM AND CAUSE PERSONAL INJURY.
1. Place the COOL-OFF-HEAT
switch into the COOL position.
2. Press the button until the
temperature setting is at least
3 degrees below the room
temperature. The air conditioning
system should turn on within
a few seconds.
NOTE: When in the COOL mode once the thermostat turns off, a built in 5-
minute delay prevents the system from turning on again. This protects the
compressor. No additional time delay relay is required. To override the 5-
minute delay for installation, press the RESET button.
3. Put the COOL-OFF-HEAT switch
into the OFF position. The air
conditioning system should turn off.
4. Put the COOL-OFF-HEAT switch
into the HEAT position.
5. Press the button until the
temperature setting is at least
3 degrees above room temperature.
The heating system should turn on.
The fan may not turn on immediately,
depending upon the fan delay built
into the furnace.
6. Put the COOL-OFF-HEAT switch
into the OFF position. The heating
system should turn off. The fan may
continue to run for a short period
of time.
7. Put the AUTO-ON switch to the
ON position. The blower fan should
turn on.
8. Put the AUTO-ON switch to
the AUTO position. The blower fan
should turn off.
COOL-OFF-HEAT
COOL-OFF-HEAT
COOL-OFF-HEAT
>
AUTO - ON
>
COOL-OFF-HEAT
AUTO - ON

Changing Fahrenheit (F) to Celsius (C)
The thermostat is preset to display the temperature in degrees Fahrenheit.
You may change the display readout to Celsius if desired.
1. Move the manual switch marked F (Fahrenheit) and C (Celsius) locat-
ed at the center of the circuit board to the desired setting (page 5).
2. Press RESET button located to the right of the LCD display to
register the change.
The display will change to show the temperature in your desired
temperature scale. To return the thermostat to its original setting, repeat
steps 1 and 2 above.
Note: Pressing the RESET button resets the 1st and 2nd stage differential
to factory preset conditions.
LED Indicator
The LED indicator illuminates during a call for second stage heating or
cooling. The auxiliary stages are used to maintain comfort during
extremes in weather conditions. If the LED is illuminated too frequently
during periods of moderate temperature, check the differential settings
(page 6).
Troubleshooting
Symptom Remedy
8
Thermostat does not turn
on system. Check wiring. (See INSTALLATION)
Check fuse. Replace with 2 amp
fuse if fuse has opened.
Thermostat turns on and
off too frequently. Increase temperature differential. (See DIFFERENTIAL)
System fan does not
operate properly. Move fan option switch to either gas or electric, to match system.
(See INSTALLATION)
Thermostat does not display
proper room temperature. Check F Fahrenheit/C Celsius
switch located at top center of cir-
cuit board for proper position. If a
new selection is made, press
RESET button located directly
below LCD display.

If problems with thermostat cannot be solved, call:
Technical Support: [phone]
Monday-Friday 7:30-5:30 CST
For warranty returns, send thermostat, shipping prepaid to:
Uni-Line North America
Warranty Claims Department
515 S. Promenade
Corona, CA 91719
9

10
Wiring Diagrams
The following is just a sample of the most common types of HVAC
systems. Refer to your system’s installation manual for wiring information.
Robertshaw 9515 Multi-Stage Thermostat
C R Y2 Y1 W1 GW2 O B
C R Y/Y1 W1 GW2
2 Stage Heat / 1 Stage Cool
Robertshaw 9515 Multi-Stage Thermostat
C R Y2 Y1 W1 GW2 O B
C R Y2 Y1 W1 GW2
2 Stage Heat / 2 Stage Cool