Rheem 441 Series Owner's Manual And Installation Instructions page 26

INSTALLATION
REDUCING HEAT LOSSES
The cold water line to and the hot water line from the water heater must be
insulated in accordance with the requirements of AS/NZS 3500.4. The insulation
must be weatherproof and UV resistant if exposed.
SADDLING - PIPE WORK
To prevent damage to the cylinder when attaching pipe clips or saddles to the
water heater jacket, we recommend the use of self-drilling screws with a
maximum length of 13 mm. Should pre drilling be required, extreme caution must
be observed when penetrating the jacket of the water heater.
Note: If the cylinder is damaged as a result of attaching pipe clips or
saddles to the jacket, any resultant faults will not be covered by the Rheem
warranty.
318457 Rev D Issued: 15/11/18 26