Installing the Chimney System

Vermont Castings EWF36A

exposed when cover plate is removed. Retain for future use.

2.Slide the two (2) air duct assemblies provided with the unit into the openings on each side of the unit. (Fig. 14)

3.Attach the air duct assemblies to the inside panel with four (4) screws removed in Step 1. (ﬁg. 14)

Air Duct Assembly

AK-MST

FP1654

Fig. 14 Air duct assembly.

Start by attaching the ﬁrst chimney section to the collar on top of the ﬁreplace.

Install the pipe as pictured in Figure 16. When you get a good lock, you will hear the pipe clearly snap together. Once sections are snap-locked in place, it is extremely difﬁcult to get them apart. Make sure the pipe is ﬁrmly snapped and locked together as each pipe section is mounted.

When installing elbows, only outer pipe will snap- lock. Middle pipes simply slide into position. Be sure to always attach straps on upper elbow to a structural framing member. (Fig. 17)

Continue installing the pipe as required until pipe is installed up through the ceiling. At this point, you must

install a ﬁrestop spacer.

Pipe Section

Pipe

Rim

4. Attach the inlet collar with four (4) #10 screws to the

side near the bottom of the ﬁreplace. Slide the duct

over the collar and attach the duct to the collar using

the plastic tie straps or three (3) screws (screws not

provided). Continue attaching the ducting together

using three (3) screws at each joint until you have

installed sufﬁcient duct to arrive at your duct termina-

tion location.

5. At the termination end, install the duct termination.

This should be installed from the outside of the

home. Cut a hole in the desired location approxi-

mately 4¹⁄₂” in (114 mm) diameter, caulk around the

Pipe Hem

Hem

Lance

FP1198

hole, and slide the termination through the opening

from outside the home. The termination/rain cap

should be caulked around its perimeter to assure a

tight seal. The rain cap opening should be positioned

downward. (Fig. 15)

The AK-MST Outside Air Kit is now installed and ready for use.

Caulking

Duct Termination

Rain Cap

Wall	FP1061

Fig. 15 Caulk and install duct termination/rain cap in place.

Fig. 16 Install pipe, listening for the snap-lock to fasten.
Elbow Strap	Support Structure

	Elbow Strap
	(must be tight)
	Ceiling Hole
	Framing
Angled Strap
	Angled Firestop
FP270/271	Chimney Support Strap
	(must be tight)

Fig. 17 Attach straps to a structural framing member.

20005167

Fig. 14 Air duct assembly.