Crown Boiler PHNTM399, Installation And Operating Instructions Manual

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Refer to National Electrical Code , NFPA 70 and/
or Canadian Electrical Code Part 1, CSA C22.1,
Electrical Code.
C. Pressure test.
See Table 20 for Phantom 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
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. Phantom 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:
a. Locate and remove the ¾ in. NPT x 6 in. long
black nipple and ¾ in. NPT external gas shutoff
valve (required).
b. Model PHNTM500 boiler has ¾ in. NPT x
12 in. long black nipple and left side panel
grommet factory installed (disregard the supplied
¾ in. NPT x 6 in. long black nipple in the
miscellaneous parts carton).
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 24 “ 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.
VII. Gas Piping
(continued)
Figure 24: Recommended Gas Piping
1. Protect boiler gas control valve.
For all testing
over ½ psig (3.4 kPa), boiler and its individual
shutoff valve must be disconnected from gas supply
piping. For testing at ½ psig (3.4 kPa) or less, isolate
boiler from gas supply piping by closing boiler’s
individual manual shutoff valve.
2. Locate leaks
using approved combustible gas non-
corrosive leak detector solution.
DANGER
Explosion Hazard. Do not use matches, candles,
open flames or other ignition source to check for
leaks.
D. Phantom Model PHNTM500
(if equipped with
optional low and high gas pressure switches):
1. Verify low and high gas pressure switch
settings
are within the range shown in Table 20.
The switches are preset for natural gas. For LP
gas, the low gas pressure switch setting must be
adjusted.
Boiler
Model
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.)
PHNTM399 13.5 4.0
11.0
PHNTM500
13.5 4.5
Table 20: Min./Max. Pressure Ratings