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240 (T-H3J), 340 (T-H3S) and 540 (T-H3) models Service Manial
Ver. 1.00
CONFIDENTIAL
12-17. Draining and cleaning the inlet water filter
1. Close the manual gas shut off valve.
2. Turn off power to the water heater, wait a few seconds. And then turn on again.
3. Wait 30 seconds for water valves starts to completely open.
Then turn off power to the water heater, yet again.
6. Have a bucket or pan to catch the water from the drain
plugs of the water heater.
Unscrew
the drain plugs to
drain all the water out of the water heater.
7. Wait a few minutes to ensure all water has completely
drained from unit.
8.
Clean the filter:
Inspect the water filter located within the cold inlet.
With a tiny brush, clean the water filter of any debris which may have
accumulated and reinsert the filter back into the cold water inlet.
9. Securely screw the drain plugs back into place.
Hand- tighten only
.
5. Open all hot water taps in the house. When the all
water flow has ceased, close all hot water taps.
4. Close the water shut-off valve.
Water valve
Gas
valve
Drain plug
(Small)
Drain plug
with Filter (Large)