Install Instructions

32
109837-01 - 5/20
PVCG-C
Installation, Operating & Service Manual
10 Start-up and Checkout
A. Start with the boiler dry and the gas supply to the
boiler shut off.
B. Main Burner Check - Check main burners to see
that they were not dislodged during shipment.
Rear of burners should be in the vertical slots in
the rear of burner tray and the front of the burners
should be seated completely on the orifices.
C. LWCO Probe Check - Turn on power to the boiler.
Both the green power light and the yellow low
water light should come on (Figure 10.1)
D. Fill the boiler and system with water and purge the
system of as much air as possible.
E. Turn on the gas supply to the boiler. Check the
gas line for leaks and purge piping sections
that are full of air. Refer to the National Fuel Gas
Code, the Natural Gas and Propane Installation
Code, the gas supplier, or the authority having
jurisdiction for additional information on testing
and purging gas lines.
F. Verify that the vent system is complete and free
of obstructions before attempting to fire boiler.
Make sure that the silicone cure time called for in
the vent assembly instructions has passed before
firing boiler.
G. Inspect all wiring for loose or uninsulated
connections.
H. Adjust thermostat to the highest setting.
I. Start the boiler using the lighting instructions
shown in Figure 10.3. Upon initial start-up, the gas
train will be filled with air. Even if the gas line has
been completely purged of air, it may take several
tries for ignition before a flame is established.
Once a flame has been established for the first
time, subsequent calls for burner operation
should result in a flame on the first try.
J. Check entire gas train for leaks using a listed
combustible gas detector, a non corrosive leak
detection fluid or other listed leak detection
method while boiler is firing. Fix any leaks found
immediately.
K. Check the manifold pressure and adjust
if necessary. To do this, use the following
procedure:
1. Connect a manometer to the inlet pressure tap
on the gas valve (see Figure 10.2).
2. Check the inlet line pressure with all gas
Figure 10.2: Top View of Gas Valve
WARNING
• Gas leaks may result in fire or explosion.
• Never use a flame to check for gas leaks.
• Make sure that the area around the boiler is
clear and free from combustible materials,
gasoline and other flammable vapors and
liquids.
• Water leaks may cause extensive property
damage.
WARNING
Do not leave the boiler in service if it fails any
of the following start-up checks. Doing so may
result in fire, explosion, or carbon monoxide
(CO) poisoning.
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Figure 10.1: IDL 1200 Low Water Cut-Off
WARNING
If the yellow light on the LWCO is not illuminated
when the boiler is powered and there is no
water in the boiler, shut down power to the
boiler and contact the factory for assistance
before proceeding further.
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