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
n
atural 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
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