Installation Manual

Demand Duo™ H-Series Installation and Operation Manual 45
Flare Side
3/4 NPT
Side
36 in. Gas Flex
3/4 NPT
Field
Connection
Flare Side
3/4 NPT Side
1. Remove Gas Flare Adapter from the end of
the Gas Flex Hose Assembly.
2. Apply a pipe sealant approved for gas to
the 3/4 NPT side of the Gas Flare Adapter.
3. Thread the 3/4 NPT side of the Gas Flare
Adapter into the field connection gas
supply (Figure 49).
NOTE
DO NOT apply sealant to the parallel
threads on the flare side of the Gas Flare
Adapter.
4. Thread the flare side of the 36 in. Gas Flex
into the flare side of the Gas Flare
Adapter (Figure 50).
6. Leak test ALL gas fittings and assembly
using a leak test solution, soap and water,
or an equivalent nonflammable solution.
7. If leak is identified at the flex connection,
gradually tighten fitting until leak stops.
DO NOT connect gas flex directly to pipe
threads of gas supply pipe or appliance. Install
Gas Flex using only the Gas Flare Adapter
provided.
Flare Side
36 in. Gas Flex
5. Use a backer wrench to tighten all
connections to the recommended torque
value of 62 lbs-ft.
Figure 49
Figure 50
Figure 51
Figure 48