72
103448-10- 6/18
ALP210B), or ¾ in. NPT x 6 in. long black
nipple and ¾ in. NPT external gas shutoff
valve (ALP285B only).
b. Feed the appropriate nipple through factory
installed jacket left side panel grommet
(refer to Figure 1A or 1B for gas supply
connection identification) and screw the
nipple into boiler gas valve inlet port.
c. Mount the appropriate external gas shutoff
valve onto the threaded nipple 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 26.
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.
C. Pressure test.
See Table 20 for Alpine Min./
Max. Pressure Ratings. The boiler and its gas
connection must be leak tested before placing
boiler in operation.
Table 19: Specific Gravity Correction Factors
Specific
Gravity
Correction
Factor
Specific
Gravity
Correction
Factor
0.60
1.00
0.90
0.82
0.65
0.96
1.00
0.78
0.70
0.93
1.10
0.74
0.75
0.90
1.20
0.71
0.80
0.87
1.30
0.68
0.85
0.81
1.40
0.66
B. Connect boiler gas valve to gas supply system.
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.
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 Part Carton (P/N 101777-
01 - ALP080B through ALP210B; 101777-
02 - ALP285B), which includes gas piping
components to connect boiler gas valve to
gas supply system. Install these components
prior to connecting boiler to gas supply system
piping as follows:
a. Locate and remove either ½ in. NPT x 6 in.
long black nipple and ½ in. NPT external
gas shutoff valve (ALP080B through
Figure 26: Recommended Gas Piping
VII. Gas Piping
(continued)
Boiler
Model
No.
Natural/LP
Gas Max.
Pressure
(in. w.c.)
Natural Gas
Min. Pressure
Inlet to Gas
Valve
(in. w.c.)
LP Gas
Min.
Pressure
Inlet to Gas
Valve
(in. w.c.)
ALP080B
14.0
4.0
11.0
ALP105B
ALP150B
ALP210B
ALP285B
Table 20: Min./Max. Pressure Ratings
Summary of Contents for Alpine ALP080B
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