U.S. Boiler Company Alpine ALP500C, Installation, Operating And Service Instructions

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Models ALP600C, ALP700C and ALP800C
e. Locate and remove 1 in. NPT external gas
shutoff valve (required).
f. Insert nipple through grommet in left side panel.
Apply pipe dope and thread nipple into gas inlet
tee or cross.
g. Mount the 1 in. NPT external gas shutoff valve
onto the nipple threaded end outside of the jacket
left side panel.
h. Install sediment trap, ground-joint union and
manual shut-off valve upstream of mounted
factory supplied manual shut-off valve. See
Figure 35 “ Recommended Gas Piping”.
4. All above ground gas piping
upstream
from manual shut-off valve must be electrically
continuous and bonded to a grounding electrode. Do
not use gas piping as grounding electrode. Refer to
National Electrical Code , NFPA 70 and/or Canadian
Electrical Code Part 1, CSA C22.1, Electrical Code.
Warning
Explosion Hazard. Failure to use proper
thread compounds on all gas connectors
may result in leaks of flammable gas.
gas supply to boiler and system must be
absolutely shut off prior to installing or
servicing boiler gas piping.
B. Connect boiler gas valve to gas supply
system.
1. Use methods and materials in accordance
with local plumbing codes and requirements of gas
supplier. In absence of such requirements, follow
National Fuel Gas Code , ANSI Z223.1/NFPA 54
and/or Natural Gas and Propane Installation Code ,
CAN/CSA B149.1.
2. Use thread (joint) compounds (pipe dope)
resistant to action of liquefied petroleum gas.
3. Alpine boilers have factory supplied
miscellaneous parts cartons, which include gas-
piping components to connect boiler gas valve(s) to
gas supply system. Install these components prior
to connecting boiler to gas supply system piping as
follows:
Boiler
Model
Miscellaneous
Parts Carton
ALP399C 106315-01
ALP500C 106316-01
ALP600C
106317-01 ALP700C
ALP800C
Models ALP399C and ALP500C
a. Locate and remove the ¾ in. NPT x 6 in. long
black nipple and ¾ in. NPT external gas shutoff
valve (required).
b. Insert nipple though grommet in left side panel.
Apply pipe dope and thread nipple into gas valve
(ALP399C) or gas inlet tee (ALP500C).
c. Mount the ¾ in. NPT external gas shutoff valve
onto the nipple threaded end outside of the jacket
left side panel.
d. Install sediment trap, ground-joint union and
manual shut-off valve upstream of mounted
factory supplied manual shut-off valve. See
Figure 35 “ Recommended Gas Piping ”.
Vii. gas Piping
(continued)
Figure 35: recommended gas Piping
Boiler
Model
Natural/LP
Gas Max,
in. wc (kPa)
Natural Gas
Min,
in. wc (kPa)
LP Gas
Min,
in. wc (kPa)
ALP399C
14.0
(3.49)
4.0
(1.00)
8.0
(1.99)
ALP500C
ALP600C
ALP700C
ALP800C
Table 33: Min./Max. inlet gas Pressure ratings