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H. draft inducer...................................................................................................................... 33
I. circulator pump.................................................................................................................. 33
J. drain valve......................................................................................................................... 33
K. relief valve........................................................................................................................ 34
L. flame rollout safety shutoff................................................................................................ 34
M. external condensate pump............................................................................................... 34
START-UP.............................................................................................................................. 34
A. water treatment and freeze protection.............................................................................. 34
B. filling boiler with water and purging air with diaphragm type expansion tanks.................. 35
C. filling boiler with water and purging air with conventional closed type expansion tanks.... 35
D. boiler in placing.................................................................................................................. 36
I. for your safety read before operating
II. operating instructions
III. to turn off gas to appliance
CHECK-OUT PROCEDURES AND ADJUSTMENTS............................................................ 37
A. verify proper sequence of operation.................................................................................. 37
B. inspect venting and air intake system................................................................................ 38
C. inspect condensate drain...................................................................................................38
D. inspect system piping.........................................................................................................38
E. test ignition system safety shutoff...................................................................................... 38
F. test high limit control and adjust.........................................................................................38
G. test other safety controls....................................................................................................39
H. set thermostat heat............................................................................................................ 39
1. measure the gas input rate................................................................................................39
J. set thermostat to desired room temperature......................................................................41
K. review all instructions........................................................................................................ 41
L. installation and check-out certificate.................................................................................. 41
MAINTENANCE AND CLEANING.......................................................................................... 43
A. beginning of each season.................................................................................................. 43
B. daily during heating season............................................................................................... 43
C. monthly during heating...................................................................................................... 44
D. periodically during heating................................................................................................. 44
E. end of each heating season -annual shut down procedure............................................... 44
F. annual examination and cleaning of boiler components.................................................... 44
SERVICE HINTS...................................................................................................................... 47
A flow chart/detailed sequence of operation......................................................................... 47
B. trouble shooting................................................................................................................. 50
C. differential air pressure switch check................................................................................. 58
REPAIR PARTS.......................................................................................................................59
A. jacket and base..................................................................................................................59
B. condensate drain trap assembly ....................................................................................... 61
C. block and piping assembly.................................................................................................62
D. mixer and air pressure switch assembly............................................................................ 64
E. flue adapter and exhauster assembly................................................................................ 66