Rheem XWELL XC-10 Owner's Manual And Installation Instructions page 14

INSTALLATION – GENERAL
Check the distance between the hole markings is as shown on the dimensional

drawings on page 15.
Drill holes into the wall. Use either a Ø10 mm masonry drill if using the fasteners

provided, or a suitable drill bit size if using other fasteners suitable for the wall
construction.
If using the fasteners provided, insert the plastic wall plugs into the holes and

screw in the fasteners. Leave a 6 mm to 8 mm gap between the screw head
flange and the wall surface to allow the water heater brackets to fit over behind
the fastener head.
If using another type of fastener, follow its manufacturer's instructions for

fastening. Ensure the fastener head size is:

from 11 mm to 13 mm in diameter, to allow the brackets to fit over the fastener
heads and not to disengage from the bracket, and

8 mm or less in depth so it does not foul against back of the water heater.
When screwing in the fastener, leave a 6 mm to 8 mm gap between the screw
head flange and the wall surface to allow the water heater brackets to fit over
behind the fastener head.
Hang the water heater on the wall with the brackets fitting over the fastener heads

and check it is installed level (horizontal) and hung securely.
HOT WATER DELIVERY
This water heater can deliver water at temperatures which can cause scalding.
Consideration should be given to installing an approved temperature limiting device
in the hot water pipe work from the water heater to a bathroom, ensuite or other
ablution area. This may also be required by local regulations. This will reduce the risk
of scald injury. Refer to the diagram Installation with a Temperature Limiting Device
on page 19.
If a pressure limiting valve is installed on the cold water line to the water heater and
the cold water line to a temperature limiting device branches off before this valve or
from another cold water line in the premises, then a pressure limiting valve of an
equal pressure setting may be required prior to the temperature limiting device.
ANODE
The vitreous enamel lined cylinder of the water heater is only covered by the Rheem
warranty when the total dissolved solids (TDS) content in the water is less than
600 mg/L. For water chemistries with a TDS greater than 600 mg/L, any resultant
faults will not be covered by the Rheem warranty.
If the water supply has a TDS greater than 600 mg/L, there is the possibility the anode
may become overactive and hydrogen gas could accumulate in the top of the water
heater during long periods of no use. In areas where this is likely to occur, the installer
should instruct the householder on how to dissipate the gas safely (refer to "Caution"
on page 7).
14