16
Installation Manual
Gas Connection
1) Fit a union to the water heater gas inlet for easy
connection and removal. The thread diameter is 20 mm.
THIS DOES NOT INDICATE THE SIZE OF THE GAS
SUPPLY.
2) Fit an suitably approved isolating gas cock in the supply
line adjacent to the water heater gas connection.
3) Ensure that the supply pipe and the gas pressure
regulator (ULPG or Natural Gas) has suffi cient fl ow
capacity for this and other appliances connected to the
fi tting line.
4) For ULPG appliances ensure that gas cylinders are of
suffi cient size. The water heater alone will require 2 x 45 Kg
capacity cylinders.
5) Before connecting the appliance to the gas service,
purge any debris or air from the gas service.
6) Check all joints for leaks with an approved leak tester
after connection.
Follow the instructions from the gas supplier.
Gas Piping
Gas Pressure
Size the gas line according to total MJ/h
demand of the building and length from
the meter or regulator so that the following
supply pressures are available even at
maximum demand refer AS/NZS5601:
Working Gas Supply Pressures
Natural Gas Supply Pressure
Min. 1.13 kPa
Max. 3.00 kPa
ULP Gas Supply Pressure
Min. 2.75 kPa
Max. 3.50 kPa
• Please ensure measurement is taken
when the appliance is operating at
maximum load.
The appliance must be disconnected from the gas supply piping system during any pressure testing of
that system at test pressures in excess of 3.5 kPa.
The appliance and its gas connections must be leak tested before placing the appliance in operation.
The inlet gas pressure must be within the range specifi ed. This is for the purposes of input adjustment.
In order to choose the proper size for the gas line, consult local codes and / or the AS/NZS5601.
Measuring Gas Pressure
In order to check the gas supply pressure to the unit, a tap is provided
on the gas inlet. Remove the hex head philips screw from the tap,
and connect a manometer using a silicon tube.
In order to check the gas manifold pressure on the gas valve inside
the unit. The pressure can be checked by removing the hex head
philips screw and connecting a manometer with a silicon tube.
Gas Meter
Select a gas meter capable of supplying
the entire MJ/h demand of all gas appliances
in the building.
Ensure that the gas pipe size is correct. If undersized the appliance will not operate correctly
SERVICE CALLS ARE CHARGEABLE FOR UNITS WITH INCORRECT PIPE SIZES OR BLOCKED GAS OR
WATER FILTERS.
Refer to AS/NZS5601 for pipe sizing and details.
SEE DOCUMENT IN PLASTIC SLEEVE BEHIND FRONT COVER FOR PRESSURE ADJUSTMENTS
SBB80RW̲P001-P036̲E.indd 16
SBB80RW̲P001-P036̲E.indd 16
2016/10/03 18:29:43
2016/10/03 18:29:43