Table of Contents
Advertisement
Item
Contents
Main fuel valve
(Shut-off valve)
Pilot solenoid valve
Safety
(applied for gas fired
Devices
type)
Combustion
Monitoring device
Gas pressure switch
(High and low)
(applied for gas fired
type)
Air
switch (applied for gas
fired type and for oil
type with proportional
control)
Pressure gauges
High temperature and
high pressure switch
Combustion
time
Exhaust
temperature
Checking Procedure
Check valve action and confirm function
at misfire. Check if gas passes through
the shut-off valve with gauge or bubble
test in the water especially at time of initial
running
Check insulation of coil and leak through
the valve
Measure ampere, response time for the
flame detector. Clean the glass of the
flame detector
Check the deviation between actuation
and setting point by changing gas
pressure or setting point
flow
pressure
Check actuation by increasing resistance
at the blower suction
Check indication point and zero point
Check
temperature and pressure
program
Check setting point and actual actuating
time of the timer
gas
Check actuation and setting point of
temperature protection function
actuation
and
56
Frequency
Semi-
annually
or more
○
○
○
○
○
○
actuating
○
○
Annuall
y
or
more
○
Advertisement
Table of Contents
