lp-505 Rev. 000 Rel. 015 Date 1.7.20
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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 qualied installer
/ 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 assure maximum eciency 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
7. 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 qualied installer / service technician to inspect the water
heater for possible damage from acid corrosion.
If products cannot be removed, immediately call a qualied installer
/ 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 ammable
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 uorine will produce acidic condensate that will cause signicant
damage to the water heater. Read the list of potential contaminates
and areas likely to have these contaminates in Table 7. 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.
Ensure the Water Heater Cabinet is Closed
Ensure the water heater cabinet is closed. Tighten the two upper and
lower screws to secure it. The cabinet must be closed while the water
heater is running.
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 qualied installer
/ 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 qualied
installer / service technician immediately if any problems are found.
Failure to inspect the venting system and have it repaired by a
qualied installer / 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 is undamaged and in good condition. Notify a qualied
installer / service technician if any problems are found.
Check 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
qualied installer / service technician to inspect the water
heater and system.
Check the Condensate Drain System
• While the water heater 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.
• If you notice ue gas leaking from the opening, this indicates
a dry condensate drain trap. If problem persists, contact a
qualied installer / service technician to inspect the water
heater and condensate line and rell the condensate trap.
• If applicable, check the condensate neutralizer and ensure it
is full of condensate neutralizing marble chips.
Cleaning the Air Intake Filter
The air intake lter should be cleaned once a month. If not, the water
heater could encounter combustion problems.
To clean the air intake lter:
1. Press the Power button on the control panel to turn o the water
heater.
2. Disconnect the power supply from the water heater.
3. If water heater has been operating, wait for it to cool before
continuing.
4. Remove the front cover of the water heater cabinet.
5. Pull the lter out of the air intake adapter.
6. Remove the lter from the plastic assembly and clean it with a
toothbrush and clean running water. See Figure 57.
Figure 57 - Cleaning the Air Intake Filter
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