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Rinnai Smart Cylinders low-medium pressure indoor stainless steel: Owner and installer guide: 20432-A 01-15
Valves and fittings
Valves with pressure ratings other than those listed in this manual must not be used.
Fittings supplied with the cylinder
Brass plugs, to plug unused connections, a key spanner, and the owner and installer guide are
packaged in a plastic bag inside the element cover.
Commissioning
Commissioning and draining activities must be carried out by an authorised person.
To fill and turn on the water heater
1. Open all hot water taps in the house including the shower.
2. Open the cold water isolation valve to the water heater. Air will now be forced out of the taps.
3. Close each tap when the water runs freely without air bubbles.
4. Check all plumbing connections and pipe work for water leaks.
5. Switch on the electric power supply.
To turn off the water heater
It may be necessary to turn off a water heater after installation and commissioning, for example
during building activities or if the premises are vacant.
1. Switch off the electricity supply at the isolating switch to the water heater.
2. Close the cold water isolation valve at the inlet to the water heater.
To drain the water heater
1. Turn off the water heater as above.
2. Close all the hot water taps.
3. Warning
For valve vented installations open the union at the top outlet to allow air into the
water heater. Failure to allow air into the water heater may cause the tank to implode
when you drain it.
4. Open the drain valve and drain the cylinder—make sure no damage will occur from
discharged water.
WARNING
