Checkout Procedure; Installation And Service Certificate - Williamson-Thermoflo GWS-090E Manual

GWS-090E Gas-Fired Water Boiler – Boiler Manual

8 Checkout procedure

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Boiler and heat distribution units filled with water?
Automatic air vent, if used, open one full turn?
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Air purged from system?
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Air purged from gas piping? Piping checked for leaks?
❏
❏
Correctly sized manifold orifices installed? Refer to manual
Section 2 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.
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Followed operating instructions on boiler or in manual Sec-
tion 9 for proper start-up?
❏
Verify that the boiler switches to high fire after 60 seconds of
main flame operation.
❏
Proper burner flame observed at high fire? Refer to Check
burner flame, manual Section 7.
❏
Test limit control — While burners are operating, move indi-
cator on limit control below actual boiler water temperature.
Burners should go off while circulator continues to operate.
Raise setting on limit control above boiler water temperature
and burners should reignite.
❏
Test additional field-installed controls — If boiler has a low
water cutoff, additional high limit 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:
a. Connect manometer to outlet side of gas valve. Start boiler,
allowing for normal start-up cycle to occur and main burn-
ers to ignite. With main burners on, manually shut off gas
supply at manual main shutoff gas valve. Burners should
go off. Open manual main shutoff gas valve. Manometer
should confirm there is no gas flow. Pilot will relight, flame
sensing element will sense pilot flame and main burners
reignite.

Installation and service certificate

Boiler model
_______________________________________________________________
CP number
_______________________________________
Measured Btuh input
Installer
_______________________
(company)
16
 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.
______________________________ ____________________________
Set limit control(s) to system temperature requirements. Adjust
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balancing valves and controls to provide design temperature
to system.
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For multiple zones, adjust flow so it is about the same in
each zone.
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Verify thermostat heat anticipator (if available) set properly?
Refer to Field wiring, manual Section 6, Thermostat(s).
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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.
At natural gas meter, measure time (in seconds) required
c.
to use one cubic foot of gas.
d. Calculate gas input:
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 pres-
sure for natural gas should be 3.5" w.c. and for propane gas
should be 10" w.c.
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Observe several operating cycles for proper operation.
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Set room thermostat to desired room temperature.
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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.
Date installed
_________________________________
(address)
__________________________________
Series
____________
(phone)
(installer's signature)
Part Number 550-110-737/1108