Field Controls CK-63 - Page 14

page 14 of 16
CK-63 Wiring Check-Out Standard Set-up
BASIC TESTS:
1. Using your meter, check voltage between L1 and
ground. You should have 120 volts all the time. If
you do not have 120 volts all the time, your wiring
is wrong or your breaker is o .
2. Using your meter, check the voltage between T1
and T2. You should have 120 volts (24V for low-
voltage controls) when there is a call for heat. If
you do not have the appropriate voltage when
there is a call for heat, your wiring is wrong or
your primary control is faulty.
3. Using your meter, check the voltage between T2
and T3. You should only have 120 volts (24V for
low-voltage controls) when the power venter is
running and there is a call for heat. If you do not
have the appropriate voltage when the power
venter is running and there is a call for heat,
the pressure switch is not closing or is defective:
perform the pressure switch adjustment procedure;
if the switch will not close, check the sensing tube
and tube connections.
P/N 46400900 Rev P 08/19