Crown Boiler PHNTM399, Installation And Operating Instructions Manual

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66
IX. System Start-up
(continued)
WARNING
Asphyxiation Hazard. Install flue temperature
sensor and sensor cap into two-pipe vent
connector port upon completion of combustion
test. Failure to properly secure the flue
temperature sensor into the port could lead to
property damage, personal injury or loss of life.
3. Reinstall flue temperature sensor
with sensor
cap into two-pipe vent adapter.
a. Inspect flue temperature sensor cap for
degradation. Replace if needed.
b. Use Molykote 111 grease to lubricate outer
surface of two-pipe vent adapter stub where flue
temperature sensor is inserted. Also lubricate
tip of flue temperature sensor. Reinstall flue
temperature sensor with cap into two-pipe vent
adapter.
4. Return boiler
to normal operating mode by
pressing “Auto”.
M. Test Safety Limits Controls
1. Test the ignition system safety shut-off
by
disconnecting the flame sensor connector (black
plug with orange wire) from the flame ionization
electrode. See Figure 27. The boiler must shut
down and must not start with the flame sensor
disconnected.
2. Test the flow switch
by disabling the primary
loop circulator. The boiler must not start if flow is
not present.
3. Test any other external limits
or other controls
in accordance with the manufacturer’s instructions.
N. Check Thermostat Operation
Verify that the boiler starts and stops in response to
calls for heat from the heating thermostat and indirect
water heater thermostat. Make sure that the appropriate
circulators also start and stop in response to the
thermostats.
O. Adjust Supply Water Temperature
As shipped, the heating set point supply temperature
is set to 180°F (82.2°C) and, indirect water heater set
point supply temperature is set to 170°F (76.7°C). If
necessary, adjust these to the appropriate settings for the
type of system to which this boiler is connected. See
Section X “Operation” (parameter table on page 85)
of this manual for information on how to adjust supply
setpoint.
P. Adjust Thermostats
Adjust the heating and indirect water heater thermostats
to their final set points.
Q. Field Conversion From Natural Gas to LP
Gas
Phantom models PHNTM399 and PHNTM500 are
factory shipped as natural gas builds and can be field
converted to LP gas. Follow steps below for field
conversion from natural gas to LP Gas.
1. Conversion
of Phantom models PHNTM399
and PHNTM500 from one fuel to another is
accomplished using the throttle screw on the gas
valve. Figure 34 “Gas Valve Detail” shows the
location of the throttle screw on the valve. Locate
the throttle screw on the boiler being converted.
WARNING
Explosion Hazard. Asphyxiation Hazard.
This conversion should be performed by a
qualified service agency in accordance with the
manufacturer’s instructions and all applicable
codes and requirements of the authority
having jurisdiction. If the information in these
instructions is not followed exactly, a fire, an
explosion or production of carbon monoxide
may result causing property damage, personal
injury, or loss of life. The qualified service
agency is responsible for proper conversion of
these boilers. The conversion is not proper and
complete until the operation of the converted
appliance is checked as specified in this manual.
2. If conversion is being made on a new
installation,
install the boiler in accordance
with the installation instructions supplied with the
boiler. If an installed boiler is being converted,
connect the new gas supply to the boiler, check for
gas leaks, and purge the gas line up to the boiler
in accordance with the National Fuel Gas Code ,
ANSI Z223.1/NFPA 54 and/or Natural Gas and
Propane Installation Code , CAN/CSA B149.1 or the
requirements of the authority having jurisdiction.
3. Before attempting to start the boiler,
make the
number of turns to the throttle screw called for in
Table 24.
4. Attempt to start the boiler
using the Operating
Instructions located inside the lower front cover of
the boiler. If the boiler does not light on the first
try for ignition, allow to boiler to make at least
four more attempts to light. If boiler still does not
light, turn the throttle counter clockwise in 1/4 turn