Water Inlet And Outlet; Connections - Plumbing - Rheem 27 874 Series Owner's Manual And Installation Instructions

CONNECTION SIZES
Model
Hot water connection
Cold water connection
Gas inlet connection
All plumbing work must be carried out by a qualified person and in accordance with the National Plumbing
Standard AS/NZS 3500.4 and local authority requirements.
All gas work must be carried out by a qualified person and in accordance with the New Zealand Gas
Installations Standard NZS 5261 and local authority requirements.

WATER INLET AND OUTLET

All pipe work must be cleared of foreign matter before
connection and purged before attempting to operate the
water heater. All olive compression fittings must use brass
or copper olives. Use thread sealing tape or approved
thread sealant on all fittings.
A full flow gate valve or ball valve must be installed on the
cold water line or solar preheat water line to the water
heater. A non return valve or stop tap must not be
installed. An acceptable arrangement is shown in the
diagram. Refer also to
and to "Mains Water Supply"
A disconnection union must always be provided at the cold
water inlet and hot water outlet on the water heater to
allow for disconnection of the water heater.
Insulation used on the cold and hot water lines must
extend up to the cold water inlet and hot water outlet of the
water heater.
Notes:
• It is essential all pipe connections be correctly aligned,
otherwise component connections within the water
heater may be
themselves misaligned. It is recommended also,
wherever possible, pipe connections be made at the
water heater first and final pipe runs be made in soft
copper pipe to
misalignment.
• Use the spanner flats on the water heater fittings and
take care to avoid twisting the water inlet and outlet
pipes inside the jacket.
• 874 series gas booster water heaters do not need to
be installed with a solar bypass valve.
• The maximum supply temperature to the water heater
when used as an in-series gas booster for a solar
preheat water heater is 80°C.
CONNECTIONS – PLUMBING
874 027
R¾/20
R¾/20
R¾/20
"Hot Water Delivery" on page 45
on page 44.
strained and / or components
allow some adjustment
HOT
WATER
POWER
CORD
Gas Water Heater
Cold and Hot Water Connection Details
for
HOT
WATER
POWER
CORD
Gas Booster for a Solar Preheater
Solar Preheat and Hot Water
55
GAS
COCK
PRESSURE
GATE VALVE
LIMITING
OR
VALVE
BALL VALVE
GAS
COCK
SOLAR
PREHEAT
WATER
GATE VALVE
OR
BALL VALVE
GAS
COLD
WATER
GAS