Parts4Heating H 300 Series, Installation & Operating Instructions Manual

Page: 43 / 56

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Blower Check
1. Check the high and low fire fan speed on the user-
interface. Enter the service mode by pressing the
UP arrow key and ENTER/MENU key simultane-
ously for 1 second. Verify that the min. and max.
fan speeds match Table R on the following page.
2. Note the high fire air intake pressure on the filter
box and compare to Table Q. Excessively high
pressures indicate an obstruction in the air intake
or undersized/too long air intake ducting. With a
clean air filter in place, record the intake air pres-
sure setting on the start-up checklist. Replace the
filter when the intake air pressure increases by
–0.5 in. WC from the reading recorded on the
start-up checklist.
3. The desired combustion CO2 is between 8.5%
and 9.0% for natural gas, and between 9.0% and
9.5% for propane with CO less than 150 ppm.
Combustion should be checked at high and low
fire (Max. and Min. fan speed) by using the serv-
ice mode. Enter the service mode by pressing the
UP arrow key and ENTER/MENU key simultane-
ously for 1 second. Set the fan speed using the UP
and DOWN arrow keys.
Manifold Check
1. Check manifold gas pressure at the manifold pres-
sure tap (connection “B” in Fig. 35). This pressure
should read per the values in Table S for natural
and propane gas.
2. If the pressure reading differs by more than ± 0.2
in. WC, STOP – Call the factory for directions
on what to do next!
Safety Inspection
1. Check all thermostats and high limit settings.
2. During the following safety checks leave manome-
ters hooked up, check and record.
3. If other gas-fired appliances in the room are on the
same gas main, check all pressures on the XFyre
with all other equipment running.
4. Check thermostats for ON-OFF operation.
5. Check high limits for ON-OFF operation.
6. While in operation, check flow switch operation.
CAUTION: Special manifold and air settings may
be required.
Model
Air Pressure
Setting (in. WC)
Setting
Tolerance
300 -0.1 ± 0.2 in. WC
400 -0.2 ± 0.2 in. WC
500 -0.2 ± 0.2 in. WC
700 -0.2 ± 0.2 in. WC
850 -0.3 ± 0.2 in. WC
Table Q: XFyre Intake Air Pressure Settings (High Fire)
Model High Fire Ignition Low Fire
300 5000 3000 1500
400 6000 3000 1250
500 7600 3000 1750
700 4600 3000 1250
850 5500 3000 1500
Table R: XFyre Fan Speed Settings
Table S: XFyre Manifold Pressure Settings
Finishing
1. Record all data on the “Start-up Checklist” located
at the back of this manual.
2. Disconnect the manometers and reconnect the
cap on the air intake and reinsert or close the seal-
ing screws into the bleedle valves.
3. Start-up is complete and the boiler should be oper-
ating properly.
Model
No.
Manifold Pressure (in. WC)
Natural Gas Propane Gas
High Low High Low
300 -0.2 -0.1 -0.2 -0.1
400 -0.2 -0.1 -0.2 -0.1
500 -0.4 -0.1 -0.4 -0.1
700 -1.5 -0.2 -2.2 -0.2
850 -2.7 -0.2 -1.6 -0.1
NOTE: Manifold pressures should be ±0.3 in. WC.