Connections - Plumbing - Rheem XWELL XC-10 Owner's Manual And Installation Instructions

All plumbing work must be carried out by a qualified person and in compliance with
national and local plumbing standards and regulatory authority requirements.
Water Inlet and Outlet: The cold and hot water connections are on the underside of
the water heater. The cold inlet has a blue marking and the hot outlet has a red
marking. The connection sizes are:
Hot water connection

Cold water connection

Pressure Relief Valve: A pressure relief valve is supplied with the water heater and
must be fitted before the water heater is operated. The pressure relief valve is to be
screwed into the cold water inlet fitting with the drain outlet facing in a downward
direction. The pressure relief valve contains a sealing rubber washer to seal against
water leakage. A drain line must be fitted to the pressure relief valve drain outlet.
Refer to "Pressure Relief Valve Drain" on page 18.
Isolation Barrier Protection – Malaysia only: Water Heaters supplied in Malaysia
have Isolation Barrier Protection devices supplied fitted to the cold water inlet and hot
water outlet of the water heater. These must be left in position. The pressure relief
valve screws into the inlet of the Isolation Barrier Protection device on the cold water
inlet.
Connecting Pipe Work: Connecting pipe work must be capable of withstanding
800 kPa water pressure and the hot water pipe work must be capable of withstanding
70°C water temperature. All pipe work must be cleared of foreign matter before
connection and purged before attempting to operate the water heater.
A disconnection union must be provided at the inlet of the pressure relief valve and
at the hot water outlet on the water heater to allow for disconnection of the water
heater. A braided flexible hose or semi-flexible connector may be used for connection
to the water heater, where permitted by local authorities. This water heater is intended
to be permanently connected to the water mains and not connected by a hose-set.
All olive compression fittings must use brass or copper olives. Use an approved
thread sealant such as Teflon tape on all sealing threads.
The water heater has a plastic diffuser in the inlet fitting and a dip tube in the outlet
fitting. These must be in place for the water heater to function properly. They will be
pushed into the correct position as the fitting is screwed in. Do not remove them or
use heat nearby, as damage can result.
To achieve true mains pressure operation, the cold water line to the water heater
should be the same size or bigger than the hot water line from the water heater.
CONNECTIONS – PLUMBING
G 1/2 B
G 1/2 B
17