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Step 4: customizing your thermostat, Setting or changing the setpoint temperature – Robertshaw 9520 User Manual

Page 8

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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 on the fan delay built
into the furnace.

6. Put the COOL-OFF-HEAT-EM 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.

Step 4: Customizing Your Thermostat

Setting or Changing

the Setpoint Temperature

Settings

System
Cool: The thermostat controls the cooling.
Off: The heating and cooling systems are off.
Heat: The thermostat controls the heat.
EM: The thermostat controls the second stage emergency heat.

Fan
Auto: Equipment controls the fan.
On: The fan operates continuously.

Temperature
The default setpoint temperature for heating is 70°F (21°C), and the
default setpoint temperature for cooling is 78°F (25°C). After putting
the system switch in heat, cool, or em, press either the

or

button to adjust the temperature setting up or down.

8

AUTO - ON

>

COOL-OFF-HEAT-EM

AUTO - ON

>

>

COOL-OFF-HEAT-EM

AUTO - ON

AUX

>

>

CHECK EMER

C

>

>