SECTION 6
Gas Piping
Read applicable warnings on page 1 & 2 before proceeding with
Gas Pipe installation. Improper installation may result in property
damage, severe injury, or death.
Meter and service must be large enough to handle all the burners
being installed plus any other connected load. The gas line which
feeds the system must be large enough to supply the required gas
with a maximum pressure drop of 1/2" water column. Local gas
supplier will usually help in planning the correct gas piping size.
A 1/2" pipe at each burner location must be located and oriented as
shown in (Figure 13) . To check system pressure, put a plugged 1/8"
NPT tap in the gas line at the connection to the burner farthest from the
supply. Before connecting the burners to the supply system, verify that all
high pressure testing of the gas piping has been completed. Do not high
pressure test the gas piping with the burners connected.
Follow these instructions to ensure a professional gas supply
installation:
•
Support all gas piping with suitable pipe hanging
materials.
•
Use wrought iron or wrought steel pipe and malleable
iron fitting. All pipe fittings should be new and free
from defects.
•
Use L.P. gas-resistant joint compound on all pipe
threads.
•
Check the pipe and tubing ends for leaks before
placing heating equipment into service. When
checking for gas leaks, use soap and water solution:
NEVER USE AN OPEN FLAME.
Install the flex gas connector as shown in Figure 14. The flex gas
connector accommodates expansion of the heating system and
allows for easy installation and service of the burner. The shut-off
valve must be parallel to burner gas inlet. The 2" displacement shown
is for the cold condition. This displacement may reduce when the
system is fired.
Enerco | Heatstar AG Series Heater
FIGURE 12: Incorrect Gas Line Connection with Stainless Steel
Flex Gas Connector
Heater Movement
Heater Movement
FIGURE 13: Correct Gas Line Connection with Stainless Steel
Flex Gas Connector
Shut – off Valve
2"
12"
1/2" Stainless Steel Flex Gas Connector
Stk. #16401
FIGURE 14: Gas Line Connection with Stainless Steel Flex Gas
Connector
Included in Install Kit
Stainless Steel Flex Gas Connector
E-16
Operating Instructions and Owner's Manual
Heater Movement
Heater Movement
Shut-Off Valve must be parallel
to burner gas inlet. The 2"
displacement shown is for the cold
condition. This displacement may
reduce when the system is fired.
45°
90°
Gas Supply
Nipple
Male End
Tee
Nipple
Cap
2"
12"
Burner Box
Male End
0°
45°