Montigo L42DF ST Installation & Maintenance Manual page 20

L42DF-ST* Indoor Gas Fireplace
CPI [Continuous Pilot Ignition] / IPI [Intermittent
Pilot Ignition] Jumper Cable Installation (only
available for SIT Electronic Ignition Systems)
"Why use CPI mode"?
CPI means "Continuous Pilot Ignition" or "Standing Pilot"
as it is commonly known. IPI means "Intermittent Pilot
Ignition", which only initializes the pilot when you are going
to be using the appliance.
There are several reasons why you may choose to use
CPI mode. When a flue is cold it can be difficult to light
the appliance. It can take a bit of time (particularly on tall
vents) to initialize vent action. This can result in "lifting" or
"ghosting" of the flames during the first two to three minutes
of operation. It is also possible to encounter times when
the fireplace fails to light successfully. The fireplace will
then attempt to re-light a second or third time depending
on prevailing temperatures or altitude. When in CPI mode
the pilot also keeps the system warm. During a "cold" start,
condensation will normally form on the inner glass surface
of the door. This condensation will quickly dry, however,
the condensation tends to run down the glass and cause
some streaking. CPI mode helps to resolve this issue. If
CPI mode is used during the winter months the energy it
takes to run the pilot is partially recovered as heat into the
building, so it does not waste as much energy as running
a pilot in the off season.
If you use a wall switch:
A connector is supplied with this unit that can be plugged
into the wire harness connected to the controller. When the
CPI jumper is connected, the pilot will light and remain lit
continuously. Use the wall switch to turn the main burner
on or off. To switch back to IPI mode you must unplug the
CPI jumper.
If you use the optional remote:
A connector is supplied with this unit that can be plugged into
the wire harness connected to the controller. This Jumper
Cable gives the Remote Control the ability to operate the
CPI / IPI switch and set the unit to operate in either condition.
The difference between IPI and CPI:
IPI (Intermittent Pilot Ignition) Mode: is a fuel saving mode
in which the pilot is only used when the main burner is on.
CPI (Continuous Pilot Ignition) Mode: The Pilot runs
continuously even when the main burner is off.
Page 20
Installation
Installing the CPI Jumper Cable
1). Access the controller (refer to the installation and
maintenance manual for your model).
Figure 18.
2). Remove the bag containing the Jumper Cable from
the wiring harness connected to the controller as shown
in Figure 18.
Figure 18a.
3). Find the corresponding plug attached to the control wire
harness and connect the CPI jumper.
Figure 18b.
4). See remote operation manual to turn remote into CPI
mode.
XG0182 - 151126