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Greenfire® GF1500L-2 Gas Fireplace

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installation

Diagram 4

Diagram 3

7. Ensure that the pipe clearances to combustible

materials are maintained (Diagram 3). Install
the termination cap.

The four wood screws provided should be
replaced with appropriate fasteners for stucco,
brick, concrete, or other types of sidings.

8. Before connecting the horizontal run of flue

pipe to the vent termination, slide the Wall
Thimble over the vent pipe. The wall thimble
is required for all horizontal terminations.

9. Slide the appliance and flue assembly towards

the wall carefully inserting the flue pipe into the
flue cap assembly. It is important that the flue
pipe extends into the flue cap sufficient distance
so as to result in a minimum pipe overlap of
32mm. Secure the connection between the flue
pipe and the flue cap.

10. Install wall thimble in the center of the 279 mm

square and attach with wood screws (diagram
4).

Unit Installation with Horizontal
Termination (Rigid Flue Systems)

A top clearance of 76mm and side & bottom
clearance of 51mm must be maintained; except
when passing through a wall, ceiling, or at
the termination where the use of a firestop or
wall thimble reduces the required clearance
to 38mm. We recommend framing a 279mm
x 279mm (inside dimensions) hole to give
structural rigidity for mounting the termination.

Install the flue system according to the
manufacturer's instructions included with the
components.

1. Set the unit in its desired location. Check to

determine if wall studs or roof rafters are in
the way when the flueing system is attached.
If this is the case, you may want to adjust the
location of the unit. Rough in the gas preferably
on the right side of the unit.

2. Simpson Dura-Vent Flue pipe and fittings are

designed with special twist-lock connections
to connect the venting system to the appliance
flue outlet. A twist-lock appliance adaptor is
required.

Diagram 1

Horizontal runs of flue must be supported
every 0.9 metre. Wall straps are available for
this purpose.

6. Mark the wall for a 279mm x 279mm square

hole. The center of the square hole should line
up with the center-line of the horizontal pipe.
Cut and frame the 279mm square hole in the
exterior wall where the flue will be terminated.
See diagram 2 for center line requirements.

If the wall being penetrated is constructed of
non-combustible material, i.e. masonry block
or concrete, an 203mm diameter hole is
acceptable.

Diagram 2

"THIS UNIT MUST ALWAYS

TERMINATE / FLUE

DIRECTLY TO THE OUTDOORS."

Min. height

(Rigid)

(1016mm)

center

of hole

• If using Flomet Rigid Flue System (Part

No: 946-686), no Twist-lock appliance

adaptor is required.

3. In conjunction with the Simpson Direct Vent

Pro system, install the adaptor after the unit
is set in its desired location. Put a bead of Mill
Pac inside the outer section of the adapter and
a bead of Mill Pac on the inner collar. Slip the
adapter over the existing inner and outer flue
collar. Fasten to the outer collar only with the 3
supplied screws (drilling pilot holes will make
this easier).

4. Level the fireplace and fasten it to the framing

using nails or screws through the top and side
nailing strips.

5. Assemble the desired combination of pipe and

elbows to the appliance flue outlets and
secure.

• For best results and optimum performance

with each approved flueing system,

apply “Mill-Pac” sealant to every inner

pipe connection. Failure to do so may

result in drafting or performance issues

not covered under warranty.

• NOT INTENDED FOR FIREPLACE

INSERT.