Instructions / Assembly

AP18733 REV. 3.2.17
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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 qualied 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 qualied 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 flue 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 qualied service
technician to inspect the water heater and condensate line and rell 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 off 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 screen screw and 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 55.
7. Dry the lter completely. Then reinsert the lter into the plastic assembly.
8. Replace the front cover of the water heater cabinet. Reconnect power supply to the water heater.
9. Press the Power button on the control panel to turn on the water heater.
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 qualied service technician.
● Visually inspect for leaks around the internal water heater water connections and around the heat exchanger. Visually inspect the external
system piping, circulators, and system components and ttings. Immediately call a qualied service technician to repair any leaks.
WARNING
Failure to inspect the venting system and have it repaired by a qualied service technician can result in vent system failure, causing severe
personal injury or death.
Figure 55 – Cleaning the Air Intake Filter