20
33D0237
Pipe Coupling
To Heater
Valve
3"
Minimum
CA
UTION
Use new black iron pipe, steel pipe, copper tubing or internally tinned copper tubing.
Internally tinned copper tubing can only be used per National Fuel Code, section
2.6.3, providing gas meets sulfide limits, and where permitted by local codes. Gas
piping system must be sized to provide minimum inlet pressure (listed on Data
Plate) at the maximum flow rate (BTU/Hr). Undue pressure loss will occur if the pipe
is too small.
A manual shutoff valve must be installed upstream of the appliance. Union tee and
plugged 1/8" NPT pressure tapping point should be installed upstream of the
appliance.
Refer to Figure 28.
A sediment trap should be installed upstream to prevent moisture and contaminants
from passing through the pipe to appliance controls and burners. Failure to do so
could prevent the appliance from operating reliably.
Refer to Figure 28.
CONNECTING THE GAS
NOTICE: A qualified gas appliance installer must connect the heater to the gas supply. Consult all local
codes.
IMPORTANT:
Loosen the pipe adapter on the flex tube before installing to the system piping.
CHECK GAS TYPE:
The gas supply must be the same as stated on the heater’s rating plate. If the gas supply is different,
DO NOT INSTALL THE HEATER.
Contact your dealer for the correct model.
Always use an external regulator for all propane/LPG heaters only, to reduce the supply tank pressure to a maximum of
13" w.c. This is in addition to the internal regulator in the heater valve.
Manual Shutoff
Valve
Pipe
Tee Joint
Sediment Trap
Pipe Nipple
Cap
Stainless
Flexible Tube
Figure 28 - Gas Connection
