Raypak XFyre 300A Installation & Operating Instructions Manual page 47

Blower Check
1. Note the high fire air intake pressure on the swirler
and compare to Table W. Excessively high pres-
sures 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.
Air Pressure
Model
Setting (in. WC)
300A
400A
500A
700A
850A
Table W: XFyre Intake Air Pressure Settings (High Fire)
2. The desired combustion CO2 is between 8.5%
and 9.0% for natural gas, and between 9.5% and
10.0% for propane with CO less than 150 ppm.
Combustion should be checked at high and low
fire (Max. and Min. fan speed).
Manifold Check
1. Check manifold gas pressure at the manifold pres-
sure tap (connection "B" in Fig. 39). This pressure
should read per the values in Table Y for natural
and propane gas.
2. If the pressure reading differs by more than ± 0.3
in. WC, STOP – Call the factory for directions
on what to do next!
Model High Fire
300A 5400
400A 7750
500A 8100
700A 4600
850A 5450
Table X: XFyre Fan Speed Settings
Setting
Tolerance
-1.0 ± 0.2 in. WC
-2.0 ± 0.2 in. WC
-1.2 ± 0.2 in. WC
-1.0 ± 0.2 in. WC
-1.6 ± 0.2 in. WC
Ignition
3000
3000
3000
3000
3000
Manifold Pressure (in. WC)
Model
Natural Gas
No.
High
300A -1.0
400A -1.8
500A -1.1
700A -1.4
850A -2.0
NOTE: Manifold pressures should be ±0.3 in. WC.
Table Y: XFyre Manifold Pressure Settings
CAUTION: Special manifold and air settings may
be required.
User Test
Set DIP #1 on the VERSA IC control to "ON". Set
USER TEST = ON in the 'ToolBox' Menu to start the
user test function.
• USER TEST is displayed in the Title Field.
• UP keystrokes are used to advance through the
user test.
• The Boil MIN/MAX steps for burner operation are
only run for enabled boilers.
• Local Heat/DHW/EMS demands must be present
for burner operation.
Number
Output Action
Field
SYS System Pump relay turns on.
DHW DHW Pump relay turns on.
PMP 1 System and Boiler Pump relays turn on.
Boil 1 Ignite Boiler Burner.
Min 1 Hold Boiler at Min Fire.
Max 1 Ramp Boiler to Max Fire and hold.
Table Z: User Test Fields
• On the first press of the Up button, the test step is
held and "HOLD" is flashed at 1Hz.
• On the second press of the Up button, the test
step is incremented.
• If boiler outlet temperature reaches the PIM Hi-
Limit, the boiler will be ramped down to keep the
temperature in a safe range.
• Press of the Up button from Boiler Max will End
the User Test function.
47
Propane Gas
Low High Low
0.0 -1.2 0.0
0.0 -1.1 0.0
-0.1 -1.1 0.0
0.0 -1.9 -0.1
-0.1 -1.1 0.0