Freestyle 2 Series - Gas Piping

Figure 63 Connect gas supply piping
(Heating Only boiler shown).
Part number 550-142-950/0122
50
FreeStyle
®
series 2 wall mount gas-fired water boiler – boiler manual
21 Gas piping
FreeStyle
®
boilers are shipped ready to re
natural gas ONLY. You must install the pro-
pane venturi if the boiler will be connected
to propane. See page10. Failure to comply
could result in severe personal injury, death
or substantial property damage.
Connecting gas supply piping
1. Remove jacket door and refer to Figure63 to pipe gas to
boiler.
a. Place a pipe wrench on the gas line inside the jacket
when tightening the gas line assembly to the boiler gas
connection (item1).
b. Install steel pipe ttings as shown in Figure63. All
pipe ttings and gas cock are supplied by the installer.
2. Use pipe dope compatible with propane gases. Apply spar-
ingly only to male threads of pipe joints so that pipe dope
does not block gas ow.
Failure to apply pipe dope as detailed above can
result in severe personal injury, death or substan-
tial property damage.
3. Connect gas supply piping to the ½” NPT gas cock for
80/120 boilers and ¾” NPT for 155 boilers (item2).
4. Support gas piping with hangers, not by boiler or its ac-
cessories.
5. Purge all air from gas supply piping.
6. Before placing boiler in operation, check boiler and its gas
connection for leaks.
a. During any pressure testing at less than 13” w.c., close
the gas shuto valve and disconnect system gas piping.
At higher test pressures, disconnect boiler and gas valve
from gas supply piping.
Do not check for gas leaks with an open ame
— use bubble test. Failure to use bubble test or
check for gas leaks can cause severe personal
injury, death or substantial property damage.
DO NOT adjust or attempt to measure gas valve
outlet pressure. e gas valve is factory-set for the
correct outlet pressure. is setting is suitable for
natural gas and propane. Attempting to alter or
measure the gas valve outlet pressure could result
in damage to the valve, causing potential severe
personal injury, death or substantial property
damage.
Flexible appliance gas connectors are NOT rec-
ommended.
Use two wrenches when tightening gas piping at
boiler, using one wrench to prevent the boiler gas
line connection from turning. Failure to support
the boiler gas connection pipe to prevent it from
turning could damage gas line components.
1 Boiler gas supply connection, ½”NPT male for 80/120
boilers and ¾” NPT for 155 boilers.
ALL OF THE FOLLOWING ARE SUPPLIED BY THE INSTALLER:
2 T-handle gas cock, ½” NPT for 80/120 boilers and ¾” NPT for 155
boilers.
3 Nipple, ½” NPT for 80/120 boilers and ¾” NPT for 155 boilers.
4 Unions, ½” NPT for 80/120 boilers and ¾” NPT for 155 boilers.
5 Nipple, ½” NPT for 80/120 boilers and ¾” NPT for 155 boilers.
6 Tee, ½” NPT for 80/120 boilers and ¾” NPT for 155 boilers.
7 Nipple, ½” NPT x 6” for 80/120 boilers and ¾” NPT x 6” for 155
boilers, for drip leg.
8 Cap, ½” NPT for 80/120 boilers and ¾” NPT for 155 boilers.
Union or Coupling must be used.