Commission Setup (Gas); Commission Setup (Electric) - Dunkirk DMG-240 Installation, Operation & Maintenance Manual

FIGURE 9-2 Gas Valve
9 - START UP PROCEDURE
Fire, explosion, and asphyxiation hazard! Boiler is set
for natural gas from the factory. If propane is to be
used the gas valve must be adjusted before turning
boiler on. Failure to follow these instructions could
result in death or serious injury.

9.3 Commission Setup (Gas)

1.
Check gas type supplied matches data shown on boiler's
rating plate.
2.
Check gas piping to ensure it is sized and installed
correctly.
3.
Visually inspect piping to determine there are no open
fittings or ends, and all valves at unused outlets are closed
and plugged/capped.
4.
Purge air from piping. Confirm there is a steady gas
supply to the boiler.
5.
Open main gas supply.
6.
Open gas shutoff valve on boiler.
7.
Unscrew two screws located under front panel, remove the
panel.
8.
Tilt control box forward by opening holding clips located
on each side of the boiler.
9.
Check gas supply pressure at pressure outlet "Pi" on gas
valve unit.
10.
Ensure all gas connections are tight.
11.
Pressure test the gas line:
A. Test pressure must not exceed 0.87 psig/60 mbar.
B. Purge gas supply pipe within boiler by unscrewing
C. Tighten the port when pipe has been sufficiently
12.
Check all gas connections in the boiler are tight.
13.
Check piping and connections for leaks immediately after
gas is turned on. Shut off gas supply and make necessary
repairs if leaks are found.

9.4 Commission Setup (Electric)

1.
Check electrical connections to thermostat and other
external controls. Check any other connections to boiler.
2.
Check all electrical connections, particularly the ground
connection.
3.
System test pumps - verify each pump is operational
using vibration, noise and amp draw.
50
!
WARNING
pressure outlet on gas valve.
purged.
P/N 240011656, Rev. E [07/30/2018]