Weil-McLain EGH COMMERCIAL GAS BOILER EGH-125 Commercial Gas Steam Boiler

User Manual - Page 27

For EGH COMMERCIAL GAS BOILER EGH-125.

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27
Check-out procedure
Check-off steps as completed.
System properly filled with water?
Automatic air vent, if used, open one turn (water boilers only)?
Air purged from system (water boilers only)?
Steam boilers properly skimmed?
Air purged from gas piping? Piping checked for leaks?
Are proper orifices installed? Check page 11 for proper size.
Proper orifices must be used. Failure to do so will
cause severe personal injury, death or substantial
property damage.
Follow operating instruction label on boiler for proper start-
up. Also refer to “Operate boiler, page 25.
Proper burner flame? See “Check burner flame — Main
burner” and “Check burner flame — Pilot burner, page 26.
Test temperature limit — While burners are operating, turn
Boiler Temp adjustment knob counterclockwise until display
reading is below actual boiler water temperature. Burners
should go off while circulator continues to operate (water
boilers only). Turn Boiler Temp adjustment knob clockwise
until display reading is above boiler water temperature and
ignition sequence should resume.
Test any additional field-installed controls: If boiler has an
additional low water cut off, additional high limit or other
controls, test for operation as outlined by manufacturer.
Burners should be operating and should go off when con-
trols are tested. When controls are restored, burners should
reignite.
EG only - button on spill switch pushed in?
To test ignition system shut-off device:
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. Burn-
ers 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.
Set Boiler Temp adjustment knob to system temperature re-
quirements. Adjust balancing valves and controls to provide
design temperature to system. (water boilers)
Limit control set to design temperature or pressure require-
ments of system? Maximum limit setting - 240°F - 15#
(steam boilers).
For multiple zones, flow adjusted so it is about the same in
each zone (water boilers only)?
Thermostat heat anticipator set properly? Refer to “Room
Thermostat, page 20 and correct wiring diagram.
Boiler cycled with the thermostat? Raise to highest setting.
Boiler should go through normal start-up cycle. Lower to
lowest setting. Boiler should go off.
Measure gas input (natural gas only):
a. Operate boiler 10 minutes.
b. Turn off other appliances.
c. At the 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 rating label.
Check manifold gas pressure by connecting a manometer
to the downstream test tapping on main gas valve.
MANIFOLD GAS PRESSURE
NAT = 3.5" W.C.
LP = 10.0"
W.C.
Several operating cycles observed for proper operation? If
damper is provided, see Control Supplement for check- out
procedure.
Room thermostat set to desired temperature?
Installation and Service Certificate on this page completed?
All instructions shipped with this boiler reviewed with owner
or maintenance person, returned to envelope and given to
owner or displayed near boiler?
Start-up (continued)
Installation and service certificate
Boiler model __________________ Series __________ CP number ___________ Date installed ___________
Measured Btuh input ____________________
Installer ________________________ ________________________________ ________________________
(company) (address) (phone)
Installer’s signature: _____________________________________
Installation instructions have been followed.
Check out sequence has been performed.
Above information is certified to be correct.
Information received and left with owner/maintenance person
EG
&
PEG SERIES 5
s
EGH SERIES 5 GAS-FIRED BOILERSBOILER MANUAL
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