Rheem RTGH-RH10DV Service Manual page 94

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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 qualified 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 qualified
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 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 Air Intake Filter
The air intake filter should be cleaned once a month. If not, the water heater could encounter combustion problems.
To clean the air intake filter:
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 filter screen screw and pull the filter out of the air intake adapter.
6. Remove the filter from the plastic assembly and clean it with a toothbrush and clean running water. See Figure.
Figure - Cleaning the Air Intake Filter
7. Dry the filter completely. Then reinsert the filter 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 qualified 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 fittings. Immediately call a qualified service
technician to repair any leaks.
Chapter 6 Maintenance