Part 12 - Maintenance - Westinghouse WGRGH20**75F Series Installation, Start-Up, Maintenance, Parts, Warranty

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Part 12 - Maintenance

The water heater must be inspected and serviced annually,
preferably at the start of the heating season, by a qualified service
technician. In addition, the maintenance and care of the water heater
as outlined in this manual must be performed by the user/owner to
ensure maximum efficiency and reliability. Follow the maintenance
procedures given throughout this manual. Failure to perform the
service and maintenance or follow the directions in this manual
could damage the water heater or system components, resulting in
substantial property damage, severe personal injury, or death.
Check the Surrounding Area
To prevent the potential of substantial property damage, severe
personal injury, or death, eliminate all the materials listed in Table
6 from the area surrounding the water heater and the vicinity of the
combustion air intake. If contaminates are found:
• Remove products immediately from area.
• If contaminates have been there for an extended period, call
a qualified service technician to inspect the water heater for
possible damage from acid corrosion.
If products cannot be removed, immediately call a qualified service
technician to re-pipe the combustion air intake piping away from
the contaminated areas.
Combustible/Flammable Materials
Do not store combustible materials, gasoline, or other flammable
vapors or liquids near the water heater. If found, remove these
materials immediately.
Air Contaminates
If allowed to contaminate combustion air, products containing chlorine
or fluorine will produce acidic condensate that will cause significant
damage to the water heater. Read the list of potential contaminates
and areas likely to have these contaminates in Table 6. If any of these
contaminates are in the room where the water heater is located, or
combustion air is taken from one of the areas listed, the contaminants
must be removed immediately or the intake pipe must be relocated to
another area.
Check the Power Source
Make sure the power cord is properly connected. The main power line
is connected to the manual switch box inside the water heater.
Check the Status of the Control Panel
Observe the Control Panel to ensure the water heater is powered on,
and to check for any error codes. Clear any debris from the panel.
Check Exhaust Vent and Intake Pipe Terminations
Verify that the water heater exhaust vent and intake pipe terminations
are clean and free of obstructions. Remove any debris from the exhaust
vent or intake pipe openings. If removing the debris does not allow
the water heater to operate correctly, contact your qualified service
technician to inspect the water heater and the vent system.
Check Exhaust Vent and Intake Piping
Visually inspect the exhaust vent for any signs of blockage, leakage, or
deterioration of the piping. Inspect the exhaust vent bracing. Ensure
bracing is undamaged and in good condition. Notify a qualified service
technician immediately if any problems are found.
Failure to inspect the venting system and have it repaired by a
qualified service technician can result in vent system failure, causing
severe personal injury or death.
Visually inspect the intake piping for any signs of blockage. Inspect the
entire length of the intake pipe to ensure piping is intact and all joints
are properly sealed. Inspect the intake pipe bracing. Ensure bracing
whl-605 Rev. 002 Rel. 000 Date 1.23.19
is undamaged and in good condition. Notify a qualified service
technician if any problems are found.
Check the Condensate Drain System
• While the water heater is running, check the discharge end
of the condensate drain tubing. Ensure no flue gas is leaking
from the condensate
drain tubing by
holding your fingers
near the opening.
• If you notice flue
gas leaking from the
opening, this indicates
a dry condensate
drain trap. If problem
persists, contact a
qualified service
technician to inspect
the water heater and
condensate line and
refill the condensate
trap.
• If applicable, check the condensate neutralizer and ensure it
is full of condensate neutralizing marble chips.
Cleaning the Condensate Trap
Over time, blockage of the trap by debris may occur. When the
condensate cannot be released the unit will go into error and shut
down. When this occurs the trap must be cleaned.
To Remove Trap
1. Remove clip securing trap to the nipple.
2. Gently pull trap body downwards to remove.
Check Primary and Gas Piping
• Remove the water heater cover and perform a gas leak
inspection following Operating Instructions, page 2, this
manual. If gas odor or leak is detected, follow procedures on
page 2. Call a qualified service technician.
• Visually inspect for leaks around the internal water heater
water connections and around the water heater. Visually
inspect the external system piping, circulators, and system
components and fittings. Immediately call a qualified service
technician to repair any leaks.
Have leaks fixed at once by a qualified service technician. Failure
to comply could result in substantial property damage, severe
personal injury, or death.
Check and Operate Pressure Relief Valve
• Visually inspect the primary pressure relief valve and
discharge pipe for signs of weeping or leakage.
• If the pressure relief valve often weeps, the expansion tank
may not be operating properly. Immediately contact a
qualified service technician to inspect the water heater and
system.
• Before proceeding, verify that the relief valve outlet has been
piped to a safe place of discharge, avoiding any possibility of
scalding from hot water.
• Shut power off to the water heater. To avoid scalding, wait
for water heater to cool before operating the relief valve.
Figure 46 - Condensate Trap Details