Service manual

SECTION 14: REPLACEMENT PARTS
39
14.5 Pressure Switch
Pull off 3 way connector. Spring open plastic clips of
mounting cradle. Replace with correct type of
pressure switch for model. The pressure switches
are color coded for each pressure setting.
Carry out a commission after working on or
changing a pressure switch. See Page 22, Section
10.
Carbon Monoxide Hazard
Use correct pressure switch specified for each model.
Use of incorrect pressure switch or disabling
pressure switch circuit could cause unsafe condition.
Failure to follow these instructions can result in
death or serious injury.
WARNING
Pressure Switch UH [A] [AS} 30 UH [A] {AS] 45 UH [A] {AS] 60 UH [A] {AS] 75 UH [A] {AS] 100 UH [A] {AS] 125
P/N 90439801 90439810 90439802 90439810 90439810 90439803
Color Code pink black yellow black black gray
Set Point in. w.c. .23 .35 .32 .35 .35 .41