White Rodgers 1F92W-51 - Manual (Page 21)

21
LOCKOUT BYPASS OPTION
FOR QUALIFIED SERVICE TECHNICIANS’
USE ONLY. OPERATORS SHOULD NOT USE
THIS FEATURE DUE TO POSSIBILITY OF
EQUIPMENT OR PROPERTY DAMAGE, OR
PERSONAL INJURY.
DO NOT USE THE LOCKOUT BYPASS OP-
TION UNLESS THE COMPRESSOR OIL
HEATERS HAVE BEEN OPERATIONAL FOR
6 HOURS AND THE SYSTEM HAS NOT BEEN
OPERATIONAL FOR AT LEAST 5 MINUTES.
COMPRESSOR LONG TERM CYCLE
PROTECTION
To protect the compressor from potential damage
due to temperature change of crankcase oil, this
thermostat has a built-in time delay of one hour less
CAUTION !
than the power loss to the unit (up to 12 hours
maximum lockout). During this time, auxiliary heat
will be used when necessary to maintain setpoint
temperature. DO NOT attempt to override this delay
feature before crankcase temperature has stabi-
lized (for example, if power has been out for three
hours, the compressor should remain locked out for
two hours).
COMPRESSOR SHORT TERM CYCLE
PROTECTION
This thermostat has a built-in short term (5-minute)
time delay. During this 5-minute period, the thermo-
stat will lock out the compressor to allow head
pressure to stabilize. If you want to override this
feature while testing thermostat operation, simply
press ADV
PRGM
and HOLD
TEMP
at the same time at initial
startup.