Insulation of Chimney Cavity
IDV26 / IDV33 / IDV36
If You Live In A Cold Climate Zone And Your
Chimney Is On The Side Of Your House
In cold climates, especially where the chimney is
located on the outside of the home it may be
necessary to insulate the chimney cavity with NON-
COMBUSTIBLE insulation such as vermiculite or
Roxul insulation. This will keep the chimney cavity
warm and avoid cold start ignition problems.
FOLLOW ALL LOCAL CODES.
NON-COMBUSTIBLE
INSULATION
(Vermiculite, etc.)
IDVLCP
(Seal this plate with
RTV Red Silicone.)
-Vertical Venting Runs Taller Than 15 Feet-
We recommend that the pilot be left on at all times for vertical venting runs taller than 15 feet.
This will maintain a slight draft in the vent, allowing the burner to light quickly.
The pilot should be lit ½ hour before turning on appliance.
The pilot should be left on during the heating season.
IPI (Intermittent Pilot Ignition) Appliances Cold Climate Mode
For (IPI) Intermittent Pilot ignition appliances in colder climates (below freezing) it will be necessary to have the
continuous pilot (cold climate mode) operation turned on where a heated chimney is needed to maintain the draft to
ensure proper operation.
Cold Climate Mode
Intermittent Mode
This appliance may run with the pilot continuously running (cold climate mode) or in intermittent mode. For most
homeowners, the intermittent mode is preferred (as this saves fuel). However, in some situations the homeowner may
prefer to switch the appliance to cold climate mode. The most typical reasons for switching to cold climate mode are:
Cold Conditions (below freezing) – you may notice that the burner does not light quickly, and the flames lift off
the burner. If this is the situation, we recommend you switch to continuous pilot/cold climate mode. This will
keep the cavity warm and will create a slight draft in the vent, allowing for the burner to light quickly and draft
correctly.
Condensation on Glass after Startup – certain installations may encounter excessive fogging on the window
after startup (not just the first time the appliance was started). This is normal but may be remedied or reduced
by switching the appliance to cold climate mode.
Cold Glass or Hearth area – in cold conditions you may notice that the floor, hearth area and glass become
cold. To remedy this, switch the appliance to cold climate mode.
Frequent On/Off Operation – if you are frequently turning the appliance on and off, you may wish to leave it in
cold climate mode. This allows the burner to turn on more quickly, without the pilot ignition sequence.
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