49
Manifold Check
1. Check manifold gas pressure at the gas valve out-
let pressure tap (connection “D” in Fig. 43). This
pressure should read per the values in Table U for
natural and propane gas.
2. If the pressure reading differs by more than ± 0.2
in. WC,
Verify against the “final test settings”
decal provided on the inside top front panel –
Call the factory for directions on what to do
next!
CAUTION:
Special manifold and air settings may
be required.
Table T: XTherm Air Pressure Settings
Table U: XTherm Manifold Pressure Settings
User Test
Set DIP switch #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.
•
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.
Table V: User Test Fields
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.
Model No.
Net Blower Suction
(in. WC)
Setting
Tolerance
Nat.
Pro.
1005A
-4.1
-4.3
± 0.2 in. WC
1505A
-4.1
-4.3
± 0.2 in. WC
2005A
-4.1
-4.3
± 0.2 in. WC
Model No.
Manifold Gas Pressure
(High Fire Values)
Natural Gas
Propane Gas
1005A
-4.6
-6.6
1505A
-7.1
-8.0
2005A
-4.2
-9.3
