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GSA
Gas-Fired Steam Boilers –
Boiler Manual
20
Part Number 550-110-738/1012
8 Checkout procedure
o
Boiler and heat distribution units filled with water?
o
Boilers properly skimmed?
o
Air purged from gas piping? Piping checked for leaks?
o
Correctly‑sized manifold orifices installed? See Table 3,
page 7, to check size and fuel type.
Correctly sized manifold orifices must be used.
Failure to do so will cause severe personal injury,
death or substantial property damage.
o
Button on spill switch pushed in?
o
Follow Operating Instructions in Control Supplement for proper
start‑up?
o
Proper burner flame observed? See “Verify operation,” page
19.
o
Test limit control — While burners are operating, move
indicator on limit control below actual boiler pressure.
Burners should go off. Raise setting on limit control above
boiler pressure and burners should reignite.
o
Test low water cutoff — Check probe‑type low water cutoff for
proper operation.
a. Turn off power to boiler and wait 5 minutes.
b. Drain water to bottom of gauge glass.
c. Turn on power.
d. Set thermostat to call for heat. Red neon lamp on lower
water cutoff should light.
e. Wait 5 minutes. Boiler should not fire.
f. Refill boiler to correct water line. Red lamp should go off.
g. Wait 5 minutes. Boiler should fire.
h. Return thermostat to normal setting.
o
Test additional field‑installed controls — If boiler has an
additional high limit, low water cutoff or other controls, test
for operation as outlined by manufacturer. Burners should be
operating and should go off when controls are tested. When
controls are restored, burners should reignite.
o
Test ignition system safety device —
Installation and Service Certificate
Boiler model __________________ Series __________ CP number ___________ Date installed _______________
Measured Btuh input ____________
Installer ________________________ ________________________________ ______________________________
(company) (address) (phone)
_____________________________________
(installer’s signature)
o
Installation instructions have been followed.
o
Check‑out sequence has been performed.
o
Above information is certified to be correct.
o
Information received and left with owner/maintenance person.
Spark ignition
boilers: Connect manometer to outlet side
of gas valve. Start boiler, allowing for normal start‑up cycle
to occur and main burners to ignite. With main burners on,
manually shut off gas supply at manual main shutoff gas
valve. Burners should go off. Open manual main shut‑off gas
valve. Manometer should confirm there is no gas flow. Pilot
will relight, flame sensing element will sense pilot flame and
main burners reignite. Put boiler back into operation.
o
Set limit control(s) to system pressure requirements. Adjust
balancing valves and controls to provide design pressure to
system.
o
Verify thermostat heat anticipator (if available) set properly?
See “Thermostat”, page 16.
o
Cycle boiler with thermostat — Raise to highest setting and
verify boiler goes through normal start‑up cycle. Lower to
lowest setting and verify boiler goes off.
o
Measure natural gas input:
a. Operate boiler 10 minutes.
b. Turn off other appliances.
c. At natural gas meter, measure time (in seconds) required
to use one cubic foot of gas.
d. Calculate gas input:
3600 x 1000
number of seconds from step
c
= Btuh
e. Btuh calculated should approximate input rating on boiler
rating label.
o
Check manifold gas pressure by connecting manometer to
downstream test tapping on main gas valve. Manifold pressure
for natural gas should be 3.5” w.c. and for propane gas should
be 10” w.c.
o
Observe several operating cycles for proper operation.
o
Set room thermostat to desired room temperature.
o
Fill in “Installation and service certificate” below?
o
Review all instructions shipped with this boiler with owner or
maintenance person. Return instructions to envelope and give
to owner or place in pocket inside front panel in boiler.