Rinnai Multi-Point 11i Low NOx User Manual

40
Flushing the Heat Exchanger
the appliance will cause damage to the heat exchanger. Damage caused by lime build-up is not covered by the unit’s
Flushing the heat exchanger procedure:
1. Disconnect electrical power to the water heater.
2.
cold water lines (V3 and V4).
3. Connect pump outlet hose (H1) to the cold water line
at service valve (V2).
4. Connect drain hose (H3) to service valve (V1).
5.
into water (acid 8-10% of water content).
6. Place the drain hose (H3) and the hose (H2) to the
pump inlet into the cleaning solution.
7. Open both service valves (V1 and V2) on the hot
water and cold water lines.
8. Operate the pump and allow circulation through the
water heater for at least 1 hour at a rate of 15 litres
per minute.
9.
10. Rinse the chemical/water from the water heater as
follows:
a. Remove the free end of the drain hose (H3) from
the pail. Place in sink or outside to drain.
5 minutes.
11. Disconnect all hose.
12. Restore electrical power to the water heater.
V1
V3
V2
V4
H1
H2
H3
Circulating pump
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Drain Valve
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Pressure Relief Valve
3/4" Ball Valve
3/4" Union
Check Valve
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Pressure Regulator
Circulating Pump
Solenoid Valve
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Rinnai
water heater
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Rinnai Multi-Point 11i Low NOx Specifications

General

Brand	Rinnai
Model	Multi-Point 11i Low NOx
Category	Water Heater
Language	English