DHW Demand
DHW
186°F
156°F
Target = 186°F
Ion-ic
Gas Flow
External Manual
Gas Shut Off
Valve (Must Be
Within 6” of the
Boiler )
Sediment Trap
Min. Length of 3"
Tee Fitting
Cap
Fig. 23 - Recommended Gas Supply Piping
37
CHAPTER
7
CHAPTER 7 - GAS PIPING
7.1. Gas Supply Piping Connection
The gas supply piping must be installed in
accordance to all applicable local, state, national
codes, and utility requirements.
1. Install a 3/4” NPT for INSTINCT pipe union at the gas
nipple, for ease of service.
2. Install a manual shutoff valve in the gas supply piping as
shown in
Fig. 23 above.
For installations in Canada, the
installer must tag and identify the main shutoff valve.
3. Install a sediment trap (drip leg) on the gas supply
line prior to connecting to the INSTINCT gas train
as shown in
Fig. 23 above.
4. Support the gas piping using hangers. Do not
support the piping by the unit or its components.
5. Purge all air from the gas supply piping.
6. Before placing the INSTINCT into operation, check
and test all connections for leaks.
• Close the manual shutoff valve during any
pressure test with less than 13”w.c.
• Disconnect the INSTINCT and its gas valve from
the gas supply piping during any pressure test
greater than 13”w.c.
NOTICE
Do not check for gas leaks with an open flame. Use
a gas detection device or bubble test. Failure to
check for gas leaks can cause substantial property
damage, serious injury, or death.
7. Use pipe dope compatible with natural and
propane gases. Apply sparingly only to the male
threads of pipe joints so that pipe dope does not
block gas flow.
•
Failure to apply pipe dope as detailed above
can result in substantial property damage,
serious injury, or death.
•
Use a two-wrench method when tightening
field piping onto the boiler piping connections.
Use one wrench to prevent the boiler
connections from turning and the second
to tighten field piping. Failure to support
the boiler piping connections could damage
piping, causing a leak, resulting in substantial
property damage, serious injury, or death.
WARNING
WARNING
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