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7 63-2051—4
T451A, T651A, T694A,B,D,F
CHECKOUT
Checkout
After the thermostat is wired and mounted, perform the
following system checkout procedure.
T451/T651
IN HEATING APPLICATION:
1. Close disconnect switch (if used).
2. Adjust setpoint above room temperature and check
that heating system turns on.
3. Adjust setpoint below room temperature and check
that heating system turns off.
4. Adjust thermostat for desired room temperature.
IN COOLING APPLICATION:
1. Close disconnect switch (if used).
2. Adjust setpoint below room temperature and check
that cooling system turns on.
3. Adjust setpoint above from temperature and check
that cooling system turns off.
4. Adjust thermostat for desired room temperature.
NOTE: Wider temperature differential ranges can occur
when used in cooling applications with current draws
that are more than four amps. If a wider differential
range is unacceptable, use a T6051 Heavy Duty Line
Voltage Thermostat for a smaller differential range.
T694
NOTE: System switch must be in ON position to check
out system.
1. Close the disconnect switch (if used) and press
HEAT switch; adjust setpoint above room temperature
and check that heating system turns on.
2. Adjust setpoint below room temperature and check
that heating system turns off.
3. Press COOL switch; adjust setpoint below room
temperature. Check that cooling system turns on and fan
runs continuously.
4. Press fan LO, MED, HI switches and check that fan
control operates properly.
5. Adjust setpoint above room temperature and check
that cooling system turns off. Fan operates continuously.
6. Adjust thermostat for desired room temperature.
If questions arise regarding this product, contact your
distributor or local Honeywell representative.