Page 32
8.A.7 Ignition LEDs
See
Figure 32
8.A.7.a
LIMITS
Illuminates on a call for heat to indicate the limits are
satisfied. Limits may include flame rollout, spill switch,
field interlock terminals (secondary low water cutoff etc).
If the limits are open the LED will blink.
8.A.7.b V-PWR
Indicates power has been sent to the vent damper. The
damper will open causing its end switch to close.
8.A.7.c V-SW
PV1 and PV4 have a factory installed jumper which
needs to be removed when installing a Power Venter or
other vent proving switches. The V-SW LED illuminates
when the vent damper end switch and PV1 and PV4
terminals (such as power venter and/or air makeup air
pressure switch) have closed, indicating the flue is clear.
If the damper end switch or the air pressure switch fail
to close in 30 seconds the LED will blink. When the
problem is corrected it will automatically clear the fault
and stay illuminated.
8.A.7.d
FLAME
Illuminates when the pilot flame is lit. If pilot flame is not
sensed within 75 seconds or if flame is lost the LED will blink.
8.B Advanced Programing
1 Advanced Programming
Fahrenheit or Celsius?
LWCO, Auto or Manual
High Limit Differential
2
Install Outdoor Sensor
Adjust WWSD
Adjust Reset Ratio
3 Adjust Economy Dial
4. Set desired High Limit
If you are NOT making changes to
these settings, proceed to Step 2.
If you're not using an outdoor sensor, or NOT
making changes to these settings, proceed
to Step 3.
If you are using outdoor sensor and you've
programed your Reset Ratio, then skip the
Economy dial and proceed to Step 4
Always finish with Step 4 to ensure the
high limit is properly set.
See 8.B.1
See 8.B.2
See 8.B.3
See 8.C.1
See 8.C.2
See 8.C.3
See 8.A.3
See 8.A.2
Installation Programing Steps!
NOTE The 'Program Select' dial only stays on that
parameter's display setting for 6 seconds before
returning to Advanced Programing (Pro).
1. Turn the Advanced Programing dial to access the
Program Mode – indicated in the display as Pro
(See Figure 33)
2. Turn the HI LIMIT dial to select feature 2.
3. Press the Mode button to c for Celsius or F for
Fahrenheit. See Table 8
4. When finished, turn the Advance Programing dial
back to OFF or turn the HI LIMIT dial to the next
setting (3) to adjust the next feature (See 8.B.2).
8.B.2 Low Water Cut-Off
8.B.2.a
RESET, Manual or Automatic
The low water cut-off operation on the control can be
set to operate in automatic (default) or manual RESET
mode. The control will always shut-down the burner
immediately when a low water condition is detected.
If the low water condition is sustained for 30 seconds,
the low water light will be either blinking or illuminated
(depending or your reset mode), indicating that the
control has locked out the burner.
Figure 33. Advanced Programing
Mode
8.B.1
Fahrenheit or Celsius
The control has the ability to operate in Fahrenheit or
Celsius. When operating in Celsius, a c will appear
in the display next to the temperature whenever the
temperature is below 100 degrees.
To change between Fahrenheit and Celsius.
LAARS Heating Systems
