CFM Corporation A132 Manual De Usuario

9

In some areas it is possible to vent more than one gas 
fireplace into the same flue. You must ensure the flue 
being shared has the proper capacity to handle both 
fireplaces. Check installation codes for venting capacity 
information.
As always it is best to check with the authority having 
jurisdiction prior to commencement of the installation.

Insert liner from top of chimney through the damper 
opening and attach to 3" flue collar (for A125); 4" flue 
collar (for A132).  For best results use three (3) sheet 
metal screws and a hose clamp.
For natural draft inserts, packing fibreglass insulation 
around the liner in the damper area will isolate the fire-
place cavity from the chimney and prevent drafts and 
noises during operation. 
In case the fireplace opening is only minimum height  
(17¹⁄₂" for A125) (20"  for A132) and access from the 
front is not possible, remove the flue collar plate  - un-
screw and slide out from the back of the unit.  Now 
attach the liner to the flue collar, lift up and simply slide 
flue collar plate back onto the unit top.  It is important 
the plate is completely inserted and the front screw is 
fastened again in order to line up the flue outlet and the 
liner properly. (Fig. 10)

If fireplace lintel is wider than 8" (203 mm), 
the height of the fireplace opening must 
be 25" (635 mm) to allow for a 90° offset 
elbow to be installed.  

FP1354a

RHE

Flue outlet

6/03

Damper

Flue 

Collar Plate

Clamp

Chimney 

Liner
Screw

Chimney Liner

Damper

Clamp

FP1354a

Fig. 10  Remove flue collar plate and attach to flue collar.

This insert is equipped with a draft-relief opening which 
receives its dilution air supply through the opening 
behind the louvres. These openings must not be 
obstructed or altered in any way.  (Fig. 11)

A "Chimney Draw" test must be made before the 
installation is complete.
1.  Close all doors and windows in the home and start 

exhaust fans in the kitchen and bathroom.

2.  Light unit and operate for 5 minutes.
3.  Hold an ignited match or cigarette in front of the unit. 

Refer to Figure 11 for the location of the draft hood 
opening.

4.  Check to make sure smoke from the match or 

cigarette is drawn into the fireplace. If it is not, turn 
the unit off and check for causes creating the lack of 
adequate draft.

FP1371

RHE test

chimney

6/03

FP1371

Fig. 11  Hold an ignited match in front of fireplace.

These inserts are equipped with a vent safety shut 
down switch. This switch is factory installed, wired and 
tested. Check and make sure the switch and wires are 
in the proper position. The safety switch is heat activat-
ed and wired in series with the pilot system. (Fig. 12)

FP1372

Vent safety 

switch

6/17/03   djt

Bracket

Vent Safety 

Switch

FP1372

Fig. 12  Vent safety switch.