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9. START-UP PROCEDURE
START-UP PROCEDURE
A. GENERAL
1. Confirm all water, gas and electricity supplies to the
boiler are off.
2. Verify that the water piping, venting & air intake
piping, gas piping and electrical wiring are installed in
accordance with this manual and good engineering
practice.
B. CHECK WATER PIPING
1. Be sure that the expansion tank is sized, installed and
charged in accordance with the manufacturer’s
instructions and system requirements.
2. Fill the boiler and system with water, making certain
to purge all air from the system.
3. Check joints and fittings throughout the system for
leaks and repair as required. Do not allow water to
drip on the boiler to prevent damage from corrosion.
C. CHECK ELECTRIC POWER
1. Turn off both burner switches (Managing & Dependent)
on the cover of the electrical enclosure located on the
right side of the boiler under the heat exchanger jacket
panel. “0” indicates that the switch is off while “1”
indicates on. Note that these switches do not
disconnect power from the circulation pump outputs.
2. Turn on the main power, then turn on the individual
burner switches. Verify that both displays on the
electrical enclosure panel are lit. Also, be sure that the
“Pixel” display on the front of the boiler is on.
3. Check to be sure that the incoming power is within
specification. The incoming power should be phase-
neutral (Voltage between Neutral & Ground
approximately 0 volts) with minimal electrical noise.
4. The voltage reading between the hot (L1) and neutral
should approximately equal the voltage between hot
(L1) and earth ground (GND). The voltage reading
between neutral (L2) and earth ground (GND) should
be approximately 0 volts. If the readings are
significantly different than this, assure that an
appropriate earth ground is connected to the system.
The P
UREFIRE
®
main control is not designed to operate
in a phase-phase power supply configuration.
D. CHECK GAS PIPING
1. Turn off the gas shut-off valve to each burner. These
valves are located in the vestibule area at the front of
the boiler.
2. Open the gas shut-off valve on the rear of the boiler
and allow the gas header to be pressurized. Press the
reset buttons on both gas pressure switches to be sure
that they are reset and operational. The burner LCD
displays on the control cabinet will read
“INTERLOCKS OPEN” if the gas pressure switches
are not reset or if any of the interlocks connected to
terminals #11 & #12 are open.
3. Connect a manometer to the incoming gas line and
be sure that the pressure is regulated to between 3.5"
and 21.0" of water at the inlet to the boiler. Contact
the gas supplier if the pressure to the boiler is too high
or too low.
4. Perform gas line pressurization test while the manual
shut-off valves to the burners are in the “off” position.
This will prevent damage to the gas safety valves
during the test due to over-pressurization.
5. Check the incoming gas pressure while the boiler is
running to be sure that the pressure doesn’t drop to an
unacceptable level during operation.
E. CHECK OPERATION
The installation is not complete until the following systems
are tested and the control is set up:
1. Test combustion emissions on each burner
individually and with both burners firing.
2. Test the operating control on each burner
3. Test the high limit for each burner
4. Test the interlock circuit (LWCO, etc.)
The following paragraphs (F-I) describe this testing.
F. COMBUSTION TEST
1. Disconnect the CH thermostat and DHW tank
thermostat/sensor input or set these inputs to assure
no call for heat is present.
2. Turn on the electrical power and all manual gas valves
to the burners. Be sure that both LCD Screens on the
control cabinet cover are lit and that the main display
on the front of the boiler is lit. The LCD screens
should show “Standby” and the Pixel display should
show “No Demand”.
Minimum Maximum
Supply Voltage 102 volts 132 volts
Supply Frequency 40 hertz 70 hertz
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