Form No. 43539470
Oct 2019 A
–10–
8.0)
GAS CONNECTIONS
IMPORTANT BEFORE CONNECTING THE GAS TO THE HEATER
1.
Connect to the supply tank or manifold in accordance with state or local building codes. Authorities having
jurisdiction should be consulted before the installation is made.
2.
Check that the gas fuel on the burner rating plate matches the fuel for the application.
3.
Check that the gas supply piping has the capacity for the total gas consumption of the heaters and any
other equipment connected to the line.
4.
Check that the calculated supply pressure with all gas appliances and heaters operating will not drop
below the minimum supply pressure required for these heaters. Check inlet supply pressures on Section
5.0.
5.
All gas supply lines must be located in accordance with the required clearances to combustibles from
the heater as listed on the clearances label of the heater and Section 4.0 of this manual.
6.
Pipe joint compounds must be resistant to the action of liquefied petroleum gases.
7.
Gas connections to individual air heaters shall be hard piped, made using suitable flexible metal or rubber
hosing suitable for LP gas usage. Check with the authorities having jurisdiction and/or local codes prior to
choosing an individual gas connection method.
8.
The gas pipe, flexible hose and connections must be self-supporting. The gas pipe work must not bear
any of the weight of the heater or any other suspended assembly.
9.
A sediments trap (supplied with the heater) must be installed to the heater inlet as described in 8.1.
10.
This appliance is equipped with a combination gas valve. The maximum supply pressure
to the appliance is 60 mbar. If the line pressure is more than the maximum supply pressure,
then a second stage regulator which corresponds to the supply pressure must be used.
11.
After all gas connections have been made, make sure the heater and all gas outlets are turned off
before the main gas supply is turned on slowly. Turn the gas supply pressure on and check for leaks.
12.
If a 2nd stage regulator is used, the ball valve down-stream in the supply line must be closed when
purging the gas lines to prevent gas seeping through it. If initial gas pressure is higher than 60 mbar the
redundant combination gas valve is designed to lock out. Pressure build-up in the supply lines prior to
the heater must be released before proper heater operation.
13.
If a 2nd stage regulator is needed, it must be installed upstream of flexible metal or rubber hoses.