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CHAPTER 3
CHAPTER 3 - MAINTENANCE PROCEDURES
3.3. Monthly Maintenance
3.3.1 Check Vent and Combustion Air Piping
• Visually inspect the venting system and combus-
tion air piping for blockage, deterioration of gas-
kets or leakage. Contact a qualied service techni-
cian immediately if any problems are found.
Failure to inspect the vent system and com-
bustion air inlet piping and to have any con-
ditions repaired, will result in serious injury,
or death.
3.3.2 Check Pressure Relief Valve
1. Visually inspect the pressure relief valve and the
relief valve discharge pipe for signs of weeping or
leakage.
2. If the pressure relief valve weeps often, the expan-
sion tank may not be operating properly. Immedi-
ately contact a qualied service technician to in-
spect the unit and system.
3.3.3 Check Condensate Drain System
1. Ensure condensate drain assembly is rmly secured
to bottom of the unit. See Fig. 1 on the right.
Do not operate the boiler without the fac-
tory-supplied condensate drain assembly
installed. Operation of the boiler without
the condensate drain assembly installed can
result in property damage, serious injury, or
death.
2. While the unit is running, check the discharge end
of the condensate drain tubing. Ensure no ue gas
is leaking from the condensate drain tubing by
holding your ngers near the opening.
3. If you notice ue gas leaking, turn o the unit and
contact a qualied service technician to inspect the
unit and condensate drain assembly.
DANGER
WARNING
4. Ensure the condensate drain tubing is not blocked
by pouring water through the ll plug port on the
condensate drain assembly. The water should ow
out of the end of the drain tubing. If water does
not appear at the end of the drain tubing, contact
a qualied service technician to inspect and clean
the condensate drain assembly.
5. To ll the condensate drain assembly, remove the
ll plug from the condensate assembly. Slowly pour
water into the assembly until water appears at the
end of the drain tubing. Stop lling and replace
plug.
Fig. 1 - Condensate Drain Assembly
Flexible Tubing
(or 3/4 PVC/
CPVC Piping
to Drain)
Compression
Nut with Rubber Seal
Fill Plug
with Vaccum
Break Port
Condensate
Drain Assembly
Plastic Ball
(Not shown)
Retaining Nut
{
Place the Metal
Washer and (2)
Rubber Gaskets in
this order for
proper seal
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