Kelvinator KGC20BLA, Installation Manual

Measuring inlet gas pressure and testing gas leakage

The inlet gas pressure to the water heater should be checked  
and leak tested before operating for the first time. 

This is 

only to be done by a licensed professional. 

1.   Shut off the manual gas valve on the supply gas line. 
2.   Open a faucet. The water heater should turn on and the 

gas in the gas pipe line should purge. Leave the faucet on 
to keep the water heater running until it shuts down due 
to lack of gas supply. Then shut the faucet off. 

3.   Remove the screw for the pressure port located on the 

gas inlet of the water heater shown in the diagram below. 

4.   Connect the manometer to the pressure port. 
5.   Re-open the manual gas valve. Check to see that there 

are no gas leaks. 

6.   Open some of the fixtures that use the highest flow rate 

to turn on the water heater. 

7.   Check the inlet gas pressure. When the water heater is on 

a maximum burn, the inlet gas pressure within must be 
within the appropriate range. (Please refer to page 5) 

This water heater and its individual shut-off valve must be 
isolated from the gas supply piping system by unplugging 
the water heater and turning off the main gas valve during 
any pressure testing of the gas supply piping system at test 
pressures above 3kPa.

10  gas connection 

 Kelvinator Gas Continuous Flow hot water system

Gas connection

caution

1.  Turn off the electrical supply to the water heater and 

manual gas valve located on the outside of the water 
heater before beginning gas connection. 

2.   Confirm the position of the gas inlet. Do not connect 

any water lines to the gas inlet. It may be critically 
damaged.

power cord

gas inlet supply

gas valve

Sizing and connection

Check the gas type label to make sure that the water heater 
was built for the type of gas you will be using, and that the 
gas inlet pressure is within the appropriate range. (Please 
refer to page 5) 
1.   Gas pressure below this specified range for the water 

heater and/or insufficient gas volume will adversely affect 
performance. 

2.   Inlet gas pressure must not exceed the above maximum 

values; gas pressure above the specified  range will cause 
dangerous operating conditions and damage to the 
water heater. 

3.   Until testing of the main gas line supply pressure is 

completed, ensure the gas line to the water heater is 
disconnected to avoid any damage to the water heater

. 

warning

Conversion of this water heater from natural gas to 
propane or propane to natural gas cannot be done in the 
field. Contact your local retailer or distributor to get the 
correct water heater for your gas type. 

•  Size the gas piping according to AS5601 installation code 

for the correct pipe sizing for the water heater. 

•  Always use approved connectors to connect the water 

heater to the gas line. The service technician should 
purge the gas line of any debris before connecting to the 
water heater. 

•  Install a manual gas shut-off valve between the water 

heater and the gas supply line. 

•  The regulator is preset at the factory. It is computer 

controlled and is not to be adjusted by any person other 
than a qualified Service Provider. 

•  When the gas connections are completed, it is necessary 

to perform a gas leak test either by applying soapy water 
to all gas fittings and observing for bubbles or by using a 
gas leak detection device.