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I
REMOVING OLD
THERMOSTAT
If you have an
electric furnace. you
need to determine how your
fan is controlled Turn it on
and adjust your present
thermostat so the heat
comes on, while observing
when the fan comes on If the fan comes
on immediately you need
to
add the
jumper noted in section
4
between
terminals 1 & 2 If there is a noticeable
delay before the fan comes on, there
IS
no need
to
add the jumper because your
furnace controls the fan
0
heating/air conditioning system at
the main fuse panel
Most
residential
systems have a separate switch box or
circuit breaker for disconnecting power
to the furnace
Remove cover of old thermostat-
0
cover normally snaps off when
pulled firmly from the bottom If it resists.
check for a screw that locks the cover on
0
before removing the old
thermostat from the wall, look at
it
carefully to locate i h e heat
Begin by turning off power to the
-
For CT50A or CTSIA installation
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