User guide

64
18. CHECK THERMOSTAT OPERATION. Raise and
lower thermostat setting as required to start and stop
burners.
19. CHECK HIGH LIMIT CONTROL. Jumper
Thermostat terminals or thermostat connections in
Limit Control. Allow burners to operate until shutdown
by limit. REMOVE JUMPER.
20. TEST IGNITION SYSTEM SAFETY SHUT-OFF
DEVICE AS FOLLOWS:
Place the boiler into operation by following the
appropriate lighting instructions in this manual.
Proceed with test as follows:
a. Thermocouple Pilot System
Using a 3/8” wrench loosen the thermocouple lead
at the gas valve. Main gas and pilot gas must shut
off. If not, replace gas valve.
b. EI Pilot System
Carefully remove ignitor sensor wire from ignition
module Main gas and pilot gas must shut off
immediately. If not, replace the module.
c. OP and EP Pilot Systems
 Carefullyremovetheamerodwirefromterminal
“11”ontheRM7890Control.Maingasandpilot
gasmustshutoff.Ifnot,replacetheRM7890
Control.
21. COMBUSTION CHAMBER BURN-OFF
a. The mineral wool combustion chamber panels
contain a cornstarch based binder that must be
burned out at installation to prevent odors during
subsequent boiler operation.
b. Ventilate the boiler room, set the high limit to its
maximumsetting,setthethermostattocallforheat.
Allowtheboilertoreforatleastanhouroruntil
the odor from the cornstarch has dissipated.
c. Return the high limit and thermostat to their desired
settings.
CAUTION
      


      
       

SECTION IV - OPERATION (continued)