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GB100W NATURAL OR PROPANE BOILER
INSTALLATION AND OPERATING INSTRUCTIONS
INSTRUCTIONS TO THE INSTALLER
This copy of the INSTALLATION AND OPERATING
INSTRUCTIONS should be given to the owner of this
boiler and kept on file.
The INSTALLER must make sure that the owner or
operator has a basic understanding of the following:
1. The lighting instructions, the type of ignition system
installed and how it operates.
2. What the labels on the boiler say.
3. How to start up and shut off the boiler.
4. How to turn the gas and electrical power on or off.
5. What to do if the boiler shuts down on ignition
system lock out.
6. Where to check the system temperature and
pressure and what they should be.
7. The importance of reading, understanding and
following these instructions.
The INSTALLER MUST make sure that the owner
knows to shut the boiler off and call for service if the
following conditions occur:
1. Yellow lazy flames or flames outside the boiler
acket.
2. Gas smell or other strange odors.
3. Discoloration of boiler or surrounding materials due
to overheating.
4. Water leaking from the heating system piping or
relief valve.
5. Flue products leaking from the vent system into the
living space. Dampness or condensation in the
building is a good indicator of this condition.
6. The boiler’s blocked vent shutoff system is actuated.
7. The boiler’s flame roll-out safety system is actuated.
8. Control malfunction or sporadic operation.
Vent System
Thoroughly inspect the vent system for any signs of
blockage, corrosion or leakage. Immediately replace any
unsound vent system piping.
WARNING: Failure to properly inspect the vent
system on a regular basis may leave problems
undetected that can result in excessive levels
of carbon monoxide which can cause severe
personal injury or death!
Controls
Use the BOILER OPERATION and BOILER
CHECKING AND ADJUSTMENT sections of this
manual as a reference.
1. Check the thermostat for proper operation.
2. If the boiler has been equipped with a low water
cutoff device, L.W.C.O, ensure that it operates
properly. A float type L.W.C.O. should be flushed
out.
3. The relief valve should vent water when the test
lever is lifted. It should not weep or discharge water
at normal system pressure. NEVER try to clean or
repair the relief valve! If the valve fails to operate
properly, replace it!
4. The aquastat high limit controls the maximum
water temperature in the boiler. It is adjustable
from 140°F,
60
°
C
to 240°F,
116
°
C
. If the water
temperature reaches the set temperature before
the demand for heat has been met, the aquastat
high limit should shut the boiler off. The water
temperature should never exceed the maximum set
point of 240°F,
60
°
C
. The aquastat high limit
cannot be repaired. If it fails to function properly
replace it.