Rheem 812 Series Owner's Manual And Installation Instructions page 5


Do not use Propane / Butane gas mixtures in a Propane model. A Propane model is designed to operate
on Propane only. The use of Propane / Butane mixture, such as automotive LP gas fuel, in a Propane
model is unsafe and can cause damage to the water heater.
Note: LP gas models sold in New Zealand are designed to operate on the Propane / Butane mixture
supplied in New Zealand. An LP gas model has an LFZ suffix in its model number.
NOTES
 Mounting of the water heater – This water heater must be installed vertically upright with the water, gas
and power connections on the underside, pointing toward the ground. The back of the water heater can
be either against a wall or supported by a frame. The water heater must be well secured to the wall or
frame using two fasteners, suitable for the wall or frame type, each at the top and bottom of the unit. Refer
to the note on page 48 for additional information. Alternatively the water heater can be recessed into a
wall, housed in a proprietary made recess box from Rheem.
 Mains pressure water supply – The water heater is designed for direct connection to the mains water
supply. The maximum mains water supply pressure for the water heater is 1,000 kPa and the minimum
water supply pressure is 120 kPa. If the mains supply pressure in your area exceeds 1,000 kPa, a pressure
limiting valve must be fitted. A minimum water supply pressure of 120 kPa is required to achieve the rated
flow and performance of the water heater. Refer to
information.
 Connection to the water supply – This water heater is intended to be permanently connected to the
water mains and not connected by a hose-set. A braided flexible hose or semi-flexible connector may be
used for connection to the water heater, where permitted by AS/NZS 3500.4.
HOUSEHOLDER – SAFETY AND WARNINGS
"Mains Water Supply"
5
on page 50 for additional