43
Blower Check
1. Check blower suction using the manometer attached
to the air pressure tee as shown in
Figure 42
, with
the heater firing at 100% input. The reading should
be as noted in
Table R
for both natural and propane
gas.
2. When firing at 100%, the desired heater combustion
CO2 is 8.5 to 9.5% for natural gas and 9.7 to 10.7%
for propane with CO less than 100 ppm. If this
combustion cannot be achieved with the blower
suction within the tolerances specified in
Table R
,
contact the factory.
3. CO2 and CO levels must be checked at minimum fire.
When firing at minimum fire, the desired combustion
CO2 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 CO2
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.
Model
Air Pressure Setting (in.
WC)
Setting Tolerance
Nat. Gas
Propane
503A
-4.1
-4.3
± 0.2 in. WC
753A
-4.1
-4.3
± 0.2 in. WC
1003A
-4.1
-4.3
± 0.2 in. WC
1253A
-4.1
-4.3
± 0.2 in. WC
1503A
-4.1
-4.3
± 0.2 in. WC
1753A
-4.1
-4.3
± 0.2 in. WC
2003A
-4.1
-4.3
± 0.2 in. WC
Table R. MVB Air Pressure Settings
User Test
Set DIP switch #1 on the VERSA IC
®
control to “ON”. On
Touchscreen, click the Menu icon, Tools icon, Systems
Tools, Press “Start” to initiate User Test sequence.
• User Test START is displayed.
• Press Hold/Skip button 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.
• On the first press of the Hold/Skip button, the test
step is held and “HOLD” is flashed at 1Hz.
• On the second press of the Hold/Skip 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 Hold/Skip button from Boiler Max will
End the User Test function.
Number
Field
Output Action
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 S. User Test Fields
Toolbox
Max Heat
Monitor
Factory Diagnostic
Start
Hold / Skip
Stop
User Test
START
OFF
Log File Size
0 hrs
Fire Rate
0 %
BTC/PIM SW
Versa XXX
BTC/PIM SW
PIM XXX
Software: RPTS
XXX
System Tools
Defaults
Contact Info
Units
°F
↑
↓
Sample count:
0
Figure 43. Touchscreen - Toolbox Menu
Содержание Raypak MVB 1003A
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Страница 64: ...Raypak Inc 2151 Eastman Avenue Oxnard CA 93030 805 278 5300 Fax 805 278 5468 Litho in U S A www raypak com...