EXALT NATURAL GAS TO PROPANE CONVERSION INSTRUCTIONS
NOTICE
!
WARNING
!
WARNING
NOTICE
5.
Combustion Test and Adjustments
The installer MUST perform a complete combustion check to
ensure the following combustion levels are met at high and
low input firing rates and the burner is operating at optimum
conditions.
The combustion testing and adjustments must be
performed by a qualified installer, service agency or
the gas supplier. All combustion measurements must
be performed with calibrated equipment to ensure
proper readings and accuracy. Refer to Table 1 to
check the combustion is within the acceptable range.
Failure to perform a complete combustion test at both
high and low input rates may result in incomplete
combustion and the production of carbon monoxide,
which can cause severe personal injury, death or
substantial property damage.
1.
Touch simultaneously on the up and down soft
keys for 3 seconds to access the functions for the
installer. See Fig. 5.
2.
Enter the installer access code “054” by using the
LEFT and RIGHT buttons to select a digit and the UP
and DOWN buttons to change the digit. Press the
CENTER button to enter the access code.
3.
Press the RIGHT button to highlight the Manual
Operation icon then press the CENTER button.
4.
Press the CENTER button while the FAN icon is
highlighted to manually fire the burner and power
the CH circulator. See Fig. 6.
An adequate CH load must be present to dissipate the heat
generated during the combustion test. If an adequate CH
load is not available, an indirect water heater can be used to
dissipate the heat by creating a DHW call which will enable the
DHW circulator.
5.
Press the RIGHT button to adjust the firing rate to
100% (high fire). Hold down the RIGHT button to
rapidly increase the firing rate.
6.
If the combustion levels during high fire are outside
the recommended combustion settings (see Table 1),
adjust the THROTTLE SCREW (see Fig. 7) using a flat-
blade screwdriver as follows:
Counter-clockwise adjustment of the THROTTLE
SCREW at High Fire (100% firing rate):
O
2
decreases and CO
2
increases
Clockwise adjustment of the THROTTLE SCREW at
High Fire (100% firing rate):
O
2
increases and CO
2
decreases
7.
Once the combustion level is set at high fire, manually
place the boiler into low fire mode by pressing the
LEFT button to adjust firing rate down to 1% (low
fire).
8.
If the combustion level (O
2
or CO
2
) during low fire is
Fig. 6: CTRLMax Manual Operation
outside the recommended combustion settings in
Table 1 contact Ideal USA Technical Support.
9.
Press the CENTER button while the fan icon is
highlighted to shutdown the burner.
10.
Press the LEFT or RIGHT button to highlight the home
screen icon to exit the service mode.
11.
Replace the front panel and put the boiler back into
operation.
Manual Operation
Released
CH1
DHW
CH2
Off
Off
Off
FAN
