Rheem Water Heater - Manual (Page 22)

INSTALLATION – SOLAR STORAGE TANK
22
The installation must comply with these installation instructions and with the
requirements of AS/NZS 3500.4, AS/NZS 3000 and all local codes and
regulatory authority requirements. In New Zealand, the installation must
conform with the New Zealand Building Code.
It is recommended the solar storage tank be installed at ground or floor level
and must stand vertically upright. Remember all local authorities have
regulations about putting water heaters into roof spaces.
Note: It is important for the solar storage tank to be orientated vertically upright
in order for the falling film of closed circuit fluid to operate efficiently.
The top of the solar storage tank must be a minimum of 500 mm below the
bottom of the solar collectors for the system to operate correctly.
SAFE TRAY
It is a requirement of AS/NZS 3500.4
that for a new installation, a water
heater be installed in a safe tray where
in the event of a leak, property may
otherwise be damaged. Construction,
installation and draining of a safe tray
must comply with the above mentioned
Standard.
FROST PROTECTION
The water heater has a frost protection system. The frost protection system will
protect the water heater from damage, by preventing ice forming in the
waterways of the water heater, in the event of freezing conditions occurring.
The solar collectors and solar cold and solar hot pipes only contain closed
circuit fluid when the pump is operating during periods of solar gain when
heating is required. When the solar pump stops operating, the closed circuit
fluid drains back into the storage tank heat exchanger. The closed circuit fluid is
an anti-freeze agent which, when mixed to the correct specification, can
withstand temperatures of -20°C before it may freeze.
Damage to the water heater caused by freezing of the pipe work to or from the
water heater is not covered under warranty. Refer to AS/NZS 3500.4 for
precautions to be taken for installations in frost prone areas. The water heater
is not suitable for installation in areas where the ambient temperature falls
below -20ºC.