Ultra Boiler Manual

Part number 550-100-440/0122
29
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BASIC INSTALLATION
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1. Remove jacket front panel and refer to Figure33 to pipe gas to
boiler.
a. Install ground joint union for servicing, when required.
b. Install manual shuto valve in gas supply piping outside boil-
er jacket when required by local codes or utility requirements.
c. In Canada — When using manual main shuto valve, it must
be identied by the installer.
2. Wall-mounted boilers
a. Refer to separate Ultra Boiler Wall-mounting instructions.
b. Gas connection may enter from the bottom of boiler as ex-
plained in the Wall-mounting instructions.
3. Support piping with hangers, not by boiler or its accessories.
4. Purge all air from gas supply piping.
5. Before placing boiler in operation, check boiler and its gas con-
nection for leaks.
a. Close manual main shuto valve during any pressure testing
at less than 13” w.c.
b. Disconnect boiler and gas valve from gas supply piping dur-
ing any pressure testing greater than 13” w.c.
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 sub-
stantial property damage.
6. Use pipe dope compatible with propane gases. Apply sparingly
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 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, requiring no eld adjustment. Attempt-
ing 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.
Ultra boilers are shipped ready to re natural gas ONLY.
(Exception: Ultra-80LP is propane-ready.) You must
install the propane orice if the boiler will be connected
to propane. See page48. Failure to comply could result
in severe personal injury, death or substantial property
damage.
Gas pipe sizing
1. See page93 for gas line sizing information.
Check gas pressure at inlet to boiler
1. See Figure39,page40, Figure40,page40, or Figure41,page41
for location of the gas inlet pressure test port.
Use two wrenches when tightening gas
piping at boiler, using one wrench to pre-
vent the boiler gas line connection from
turning. Failure to support the boiler gas
connection pipe to prevent it from turn-
ing could damage gas line components.
Figure 33
Connect gas supply piping
Natural gas supply pressure
1. Pressure required at gas valve inlet pressure port:
a. Maximum: 13” w.c. with no ow (lockup) or with
boiler on
b. Minimum: 4” w.c. (for all except 5” for -299) with
gas owing (verify during boiler startup, while boiler
is at high re)
2. Install 100% lockup gas pressure regulator in supply line
if inlet pressure can exceed 13” w.c. at any time. Adjust
lockup regulator for 13” w.c. maximum.
Propane supply pressure
1. Adjust propane supply regulator provided by gas sup-
plier for 13” w.c. maximum pressure.
2. Pressure required at gas valve inlet pressure port:
a. Maximum: 13” w.c. with no ow (lockup) or with
boiler on
b. Minimum: 4” w.c. with gas owing (verify during
boiler startup, while boiler is at high re).
Manual main gas
shutoff valve
Ground joint
union
To gas supply
Boiler gas
connection
U3012