GSA
Gas-Fired Steam Boilers –
Boiler Manual
16
Part Number 550-110-738/0703
Boiler model
_______________________________________________________________
Series
____________
CP number
_______________________________________
Date installed
_________________________________
Measured Btuh input
____________
Installer
_______________________ ______________________________ ____________________________
(company)
(address)
(phone)
_____________________________________
(installer’s signature)
8
Checkout procedure
❏
Boiler filled with water?
❏
Boilers properly skimmed?
❏
Air purged from gas piping? Piping checked for leaks?
❏
Correctly-sized manifold orifices installed? See Table 3, page 6,
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.
❏
Button on spill switch pushed in?
❏
Followed “Lighting Instructions” on boiler or in Manual Section
10, pages 18 and 19, for proper start-up?
❏
Proper burner flame observed? See “Verify operation”, page 15.
❏
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.
❏
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.
❏
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.
❏
Test ignition system safety device — Turn gas cock knob to
PILOT position and extinguish pilot flame. Pilot gas flow should
stop in less than 3 minutes. Put system back into operation
(see Section 7, pages 14-15).
❏
Set limit control(s) to system pressure requirements. Adjust
balancing valves and controls to provide design pressure to
system.
❏
Verify thermostat heat anticipator (if available) set properly? See
“Thermostat”, page 13.
❏
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.
❏
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.
❏
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.
❏
Observe several operating cycles for proper operation.
❏
Set room thermostat to desired room temperature.
❏
Fill in “Installation and service certificate” below?
❏
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.
Installation instructions have been followed.
Checkout sequence has been performed.
Above information is certified to be correct.
Information received and left with owner/maintenance person.
Installation and service certificate