Draining Your Water Heater - Rinnai Continuous Flow Water Heaters Operation Manual

Draining Your Water Heater

Frost protection is fitted as standard on all models manufactured from 2010
onwards. Frost protection operates automatically (as required) whenever the
appliance is connected to the electric power supply.
If you live in an area prone to frost and will be away for an extended period with the power
supply disconnected, Rinnai recommend draining your appliance to prevent frost damage
(not covered by warranty).
We strongly recommend having your water heater drained by a plumber or gas fitter but
understand that remote locations and cost may prohibit this.
About this document
These instructions are intended as a guide only. Rinnai will not accept liability for issues arising
from the use of this information. In particular Rinnai will not be responsible for damage caused
by water freezing where this procedure was followed and sufficient water failed to drain from
the unit.
Instructions
You will need
A bucket if water cannot be drained into a garden or drain
Approximately 15 minutes to complete
To avoid burns wait until the water heater cools before draining the water as hot water
may drain from the unit if there has been recent hot water use.
WARNING
1. Turn off any water controllers in the building and then turn off the water, gas and power at
the unit.
Turn Water Off
Turn Gas Off
Drain Water
Hot Cold
2. To flush the water heater, open all hot water taps in the building.
Rinnai New Zealand
Filter
Drain
Gas
Valve
Gas
Continuous Flow Water Heater Operation Manual
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