Rheem 511161 Owner's Manual And Installation Instructions page 30

INSTALLATION – SOLAR STORAGE TANK
ANTI-FREEZE HEATING UNIT
Additional freeze protection is provided by the anti-freeze heating unit. The anti-freeze heating unit is for
heating the water at the bottom of the solar storage tank at times of very low cold water temperature. The anti-
freeze heating unit provides additional energy to the water to assist in the prevention of freezing in the solar
pipe work and solar collector(s). The anti-freeze heating unit is controlled by the solar controller and will only
be energised when the water temperature is very low and the circulator activates in the frost mode. The water
temperature is monitored by the cold sensor.
If the water temperature at the bottom of the solar storage tank is very low when the circulator activates in
Freeze Protection operation mode, the anti-freeze heating unit will be energised and will heat the water by a
few degrees. The anti-freeze heating unit will be de-energised when either the frost mode is shut down or the
water temperature has risen by a few degrees.
The anti-freeze heating unit is supplied with power from the solar control unit. The power outlet to the solar
control unit must be switched on for the anti-freeze heating unit to operate and offer additional freeze
protection.
MOUNTING THE GAS BOOSTER
Fit the wall bracket and secure the solar storage tank to the wall prior to the mounting of an in-series gas
booster to the solar storage tank. Refer to
It is recommended to install the fittings associated with the solar control unit prior to mounting the in-series gas
"Installation – Solar Control Unit"
booster. Refer to
fitted prior to mounting the in-series gas booster. Refer to step 12 on page 36.
Two brackets are supplied to mount the gas booster to the solar storage tank. The top bracket is secured to
the tank, then the gas booster is hung from this bracket, prior to locating the lower bracket and securing it to
the tank to hold the gas booster in position.
To fit the top bracket:

Locate one of the mounting brackets horizontally, with the two prongs pointing upwards, and the two
holes of the bracket over the dimples marked on the side of the solar storage tank.

Secure the mounting bracket using two of the
screws supplied, with the screws penetrating
through the dimples.
To mount the 8748 series gas booster:

Hang the solar gas booster water heater onto
the mounting bracket, by placing the two
horizontal slots in the top hanging bracket
over the two prongs.
To fit the bottom bracket:

Position the second mounting bracket behind
the bottom hanging bracket of the solar gas
booster water heater, ensuring:
The two prongs on the bracket are

pointing downwards, and
The prongs are inserted through the two

horizontal slots of the solar gas booster
hanging bracket.
The bracket is to be fully engaged, seating firmly onto the bottom of the slots.

Check the bracket is fully engaged and firmly seated onto the bottom of the slots of the gas booster
hanging bracket prior to securing the mounting.
This is to ensure there is no movement of the solar gas booster after the installation is complete.

Secure the mounting bracket using the remaining two screws supplied.
"Wall Bracket"
on page 26.
on page 34. The service 3-way valve assembly must be
8748 series gas booster mounting
30