7
GAS CONNECTION
SERVICE CALLS ARE CHARGEABLE FOR
UNITS WITH INCORRECT GAS PIPE SIZES.
1.8 GAS CONNECTION
(1) Fit a union to the water heater gas inlet for easy connection and removal. The thread
diameter is R3/4 /20
THIS DOES NOT INDICATE THE SIZE OF THE GAS SUPPLY refer to AS 5601
for guidance on pipe sizing.
(2) Fit an AGA 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 (LPG or Natural Gas) has
sufficient flow capacity for this and other appliances connected to the fitting line.
(4) For LPG appliances ensure that gas cylinders are of sufficient size. The water heater
alone will require a regulator of 4KG per hour capacity.
(5) Before connecting the appliance to the gas service purge any debris or air from the gas
service. Venting of purged gas shall be an area free of sources of ignition.
Close the isolating gas cock prior to connection of the appliance.
(6) After connection check all joints for leaks with an approved leak tester.
Refer to AS 5601 Installations Standard for pipe sizing details. For your assistance we
have included the following pipe sizing from AS 5601 for copper tube using Natural Gas.
THE ETERNITY G26 Pure 6 REQUIRES A MINIMUM OF 200 MJ/h FOR
THE CUSTOMER TO GET THE FULL PERFORMANCE BENEFIT.
NOMINAL PIPE
SIZE IN mm
STRAIGHT LENGTH
OF PIPE METRES
HOURLY RATE
IN MJ/h
13
18
20
25
4
4
4
4
43.0
82.2
142.0
313.0
