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CONNECTIONS – PLUMBING
59
IN-SERIES BOOSTER
The pipe work between the solar storage tank (if one is installed) and the in-series gas booster has a minimum
recommended pipe size of DN20, MUST BE of copper and be fully insulated with a closed cell type insulation
or equivalent in accordance with the requirements of AS/NZS 3500.4.
The insulation must be weatherproof and UV resistant if exposed. The insulation must be fitted up to the
connections on both the solar storage tank and the in-series gas booster. A full flow isolation valve must be
installed on the water line to the in-series gas booster.
GAS INLET
The gas connection is made at the underside of the water heater. The pipe work must be cleared of foreign
matter before connection and purged before attempting to operate the water heater. An isolation valve and
disconnection union must be installed to allow servicing and removal of the water heater (refer to the diagram
on page 58).
Note: Refer to the Gas Installations Standard AS 5601 or AS/NZS 5601.1 for the correct method of sizing the
gas supply pipe to the water heater. The pipe size selection must take into account the high gas input of this
water heater (refer to table on page 54) as well as all of the other gas appliances in the premises.
Warning: Always isolate the water heater before pressure testing the gas supply system. Disconnect the
water heater after the isolation valve to prevent the risk of serious damage to the gas control. The Rheem
warranty does not cover damage of any nature resulting from failure to observe this precaution. Refer to rating
label for gas types and pressures.
CONNECTIONS – ELECTRICAL
All electrical work and permanent wiring must be carried out by a qualified person and in accordance with the
Wiring Rules AS/NZS 3000 and all local codes and regulatory authority requirements.
Warning: Temperature controllers must not be fitted to this water heater (874 series) if it is installed as an
in-series gas booster with a solar water heater system because water at a temperature much higher than the
controller setting can be delivered. If a solar water heater is installed to an existing water heater installation,
then all controllers must be disconnected and removed.
The water heater is supplied with a 1.8 metre lead and plug and requires a weatherproof 240 V 50 Hz general
purpose outlet (GPO) to be located within 1.2 metres of the installation. The GPO must be clear of the flue
exhaust, draining water, gas supply pipe and water connections.
The power consumption of the water heater is:
Component
Power
consumption
Comments
Gas water heater
50 Watts
824NF/824NFZ – Burner on, anti-frost device inactive
57 Watts
824PF – Burner on, anti-frost device inactive
59 Watts
824LFZ – Burner on, anti-frost device inactive
118 Watts
824NF/824NFZ – Burner on, anti-frost device active
125 Watts
824PF - Burner on, anti-frost device active
127 Watts
824LFZ - Burner on, anti-frost device active
54 Watts
826NF/826NFZ, T26NF – Burner on, anti-frost device inactive
59 Watts
826PF, T26PF - Burner on, anti-frost device inactive
122 Watts
826NF/826NFZ, T26NF – Burner on, anti-frost device active
127 Watts
826PF, T26PF - Burner on, anti-frost device active
The water heater will only operate on a sine wave at 50 Hz. Devices generating a square wave cannot be used
to supply power to the water heater.
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