PB Heat Peerless Boilers GM Series, Installation, Operation & Maintenance Manual

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8. START-UP PROCEDURES
A. COMPLETING THE INSTALLATION
1. Confirm that all water, gas and electricity are
turned off.
2. Inspect the boiler combustion chamber for foreign
objects and remove if present.
3. Check physical condition of burners and pilot.
Make certain that there are no unusual bends
or perforations in the burners or pilot. Replace
components if necessary.
4. Verify that water piping, venting, gas piping and
electrical wiring and components are installed
properly. Refer back to previous sections of these
instructions as well as equipment manufacturer’s
instructions as necessary.
5. Fill the boiler and system with water, making certain
to vent all air from all points in the system. To check
water level in the system, open and close each vent
in the system. Water should exit from each vent
when it is opened.
6. Set the air pressure on the expansion tank to the
system water pressure before installing. The pressure
reducing valve on the fill line will typically allow
the system to be filled and pressurized to 12 psi
(83 kPa). Consult the valve and expansion tank
manufacturer for more specific information.
7. See Section 1 - PreInstallation, for water quality
requirements.
8. Check joints and fittings throughout the system for
leaks. If leaks are found, drain the system and repair
as required.
9. Connect a manometer to 1/8 NPT tapping provided
on the manifold. See Figure 8.1.
10. Confirm that the gas supply pressure to the boiler is
above the minimum and below the maximum values
for the gas being used. See the end of Section 5 for
these values. Verify minimum pressure when boiler
and other gas appliances are running.
If a supply pressure check is required, isolate the
boiler and gas valve before performing the pressure
check. If the supply pressure is too high or too low,
contact the gas supplier.
11. Turn on electricity and gas to boiler.
12. Light the boiler by following the Lighting/Operating
Instructions label mounted to the jacket panel. The
initial ignition may require several tries as the piping
is purged of air.
13. Use the sequence descriptions in Section 6,
paragraph B (Electrical) to follow light-off and
shutdown sequences and to assist in diagnosing
problems. If the boiler does not function properly,
consult Section 9, Troubleshooting.
14. The gas manifold and control assembly provided
with this boiler meet with all criteria regarding safe
lighting and performance as specified in ANSI
Z21.13 (CSA 4.9), Gas-Fired Low-Pressure Steam
and Hot Water Boilers . The gas manifold and control
assembly are made of gas-tight, completely factory
assembled and installed components of the base
assembly. See Figure 8.1.
START-UP PROCEDURES
Figure 8.1: Gas, Valve, Manifold and Burner
Assembly
Figure 8.2: Valve Tapping and Adjustment Screw
Locations