57
Blower Check
1. Check blower suction using the manometer
attached to the air pressure tee as shown in
Figure 60
, with the heater firing at 100% input. The
reading should be as noted in
Table AA
for both
natural and propane gas.
NOTE:
Retain the black plastic cap removed to install the
manometer. It needs to be replaced when the manometer
is removed.
2. CO
2
and CO levels must be checked at 100%
fire rate. When firing at 100%, the desired heater
combustion CO
2
is 8.6 to 9.4% for natural gas and
9.9 to 10.7% for propane gas with CO less than 100
ppm. If this combustion cannot be achieved with
the blower suction within the tolerances specified in
Table AA
, contact the factory.
3. CO
2
and CO levels must be checked at minimum
fire. When firing at minimum fire, the desired heater
combustion CO
2
is 7.5 to 9.0% for natural gas and
8.5 to 10.0% for propane gas with CO less than
100 ppm. If CO
2
values are not within the ranges
specified; and if CO is above 100 ppm in either
case, stop running the unit and contact your Raypak
representative. Visit www.raypak.com for contact
information.
A
A
WARNING:
Improper installation, adjustment,
alteration, service or maintenance can cause property
damage, personal injury, exposure to hazardous
materials or loss of life.
4. If the CO
2
values and air pressure values (
Table AA
)
are outside of the tolerances noted, the air shutter
should be adjusted slightly to bring the values back
into the nominal range. See
Figure 4
for location
of the air shutter (directly behind the touchscreen
panel). Close the shutter slightly (clockwise) to
increase the negative air pressure or raise the CO
2
values. Open shutter slightly (counter-clockwise) to
lower the negative air pressure or lower the CO
2
values.
Manifold Check
1. Check manifold gas pressure at the gas valve outlet
pressure tap (connection “C” in
Figure 59
). Refer
to
Table AB
for natural and propane gas pressure
ranges and tolerances.
2. If the CO
2
ranges specified are not achieved with
the pressure and tolerance ranges specified in
Table
AB,
STOP – Call the your Raypak representative for
directions on what to do next! Visit www.raypak.com
for contact information.
Model
No.
Air Pressure Setting
(in. WC)
Setting
Tolerance
Natural Gas
Propane Gas
300B
-1.0
-1.1
+/-0.2 in.WC
400B
-1.7
-1.9
+/-0.2 in.WC
500B
-1.8
-2.1
+/-0.2 in.WC
650B
-0.6
-0.7
+/-0.1 in.WC
800B
-1.1
-1.1
+/-0.2 in.WC
1000B
-1.8
-1.9
+/-0.2 in.WC
Table AA. XFiire Air Pressure Settings
Model
No.
Gas Manifold Pressure
(in. WC)
Setting
Tolerance
Natural Gas Propane Gas
300B
-1.0
-1.2
+/-0.2 in.WC
400B
-1.7
-2.0
+/-0.2 in.WC
500B
-1.8
-2.1
+/-0.2 in.WC
650B
-0.4
-0.6
+/-0.1 in.WC
800B
-0.8
-1.2
+/-0.2 in.WC
1000B
-1.0
-1.6
+/-0.2 in.WC
Table AB. XFiire Manifold Pressure Settings
A
A
CAUTION:
Special manifold and air settings may be
required.
User Test
Set DIP switch #1 on the VERSA IC to “ON”. On
Touchscreen, click Menu icon, Tools icon, Systems Tools,
Press "Start" to initiate User Test sequence.
• User Test START is displayed.
• Pressing Hold/Skip button advance through the user
test.
• The Boil MIN/MAX steps for burner operation are only
run for enabled heaters.
• Local Heat/DHW/EMS demands must be present for
burner operation.
Содержание Xfiire 1000B
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