Heatilator MTB28 User manual

Heatilator • MTB28 Refractory • 4058-229 Rev B • 04/08 1
Models:
MTB28
Refractory
Installation
Instructions
This refractory kit is intended for use with the AVEO Series gas appliances. Check with your local building code agency be-
fore you begin installation to ensure compliance with local codes, including the need for permits and follow-up inspections. If
you encounter any problems regarding code approvals, or if you need clarification of any of the instructions contained here,
contact your Hearth & Home Technologies Inc. dealer. For the dealer nearest you, please visit www.heatilator.com.
Note: An arrow (¨) found in the text signifies change in content.
Sharp Edges
• Wear protective gloves and safety
glasses during installation.
CAUTION
Hot Surfaces
• Install this refractory only after the appliance
has cooled and the gas and electricity have
been shut off.
WARNING
!

Heatilator • MTB28 Refractory • 4058-229 Rev B • 04/08
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CLOSED
OPEN
Figure 3.1 Manual Shutoff Valve
Required Tools
Phillips screwdriver
Safety Gloves
A. Turn off the Gas and Electrical Power
• To turn off the gas, locate the manual shutoff valve in
the control area in the bottom of the appliance. Turn the
manual shutoff valve so it is perpendicular to the gas line
(Figure 3.1).
1
1 Preparation
C. Remove Front Log
• Remove the left screw holding the front log (Figure 1.2).
• Remove the right screw located behind the right side of
the log (Figure 1.3).
• Remove Log
Figure 1.2 Remove Left Screw-Front Log
• If electricity has been brought to the appliance, shut off
all power by turning off the appropriate circuit breaker or
removing the fuse in the electrical panel. Remove D-cell
batteries from the battery pack.
B. Remove Screen & Glass from Appliance
• See appliance owner’s manual.

Heatilator • MTB28 Refractory • 4058-229 Rev B • 04/08 3
Figure 1.3 Remove Right Screw-Front Log
Figure 1.4 Remove Screw-Left Log
Figure 1.5 Rotate and Remove Left Log
Figure 1.6 Remove Left Screw-Right Log
Figure 1.7 Remove Right Screw-Right Log
D. Remove Left Log
• Remove the screw attaching the log to the fireplace. This
screw is located on the left side of the log (Figure 1.4).
• Rotate the left side of the log forward and slide the log
bracket out of the slot in the false back (Figure 1.5).
E. Remove Right Log
• Remove the two screws holding the right log (Figures 1.6
and 1.7).
• Remove the log.
F. Remove Pilot Shield
• Remove the two screws holding the pilot shield and
remove the shield (Figure 1.8).
Figure 1.8 Remove Pilot Shield

Heatilator • MTB28 Refractory • 4058-229 Rev B • 04/08
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Figure 1.9 Remove Glass Heat Shield
G. Remove Glass Heat Shield
See Figure 1.9.
2
2 Install Refractory
The refractory will look as shown in Figure 2.1.
Figure 2.1 Refractory
• Fold the right side of the refractory as shown in Figure
2.2.
Figure 2.2 Fold Right Side
• Fold the left side of the refractory as shown in Figure
2.3.
Figure 2.3 Fold Left Side

Heatilator • MTB28 Refractory • 4058-229 Rev B • 04/08 5
• For Rear Vent Appliances Only: Fold the flue visor cover
forward as shown in Figure 2.4. If installing in a top vent
unit DO NOT fold the cover forward.
Figure 2.4 REAR VENT ONLY - Fold Flue Visor Cover
• Install the refractory in the appliance as shown in Figure
2.5.
Figure 2.5 Install Refractory in Appliance
• Attach the three screws that hold the refractory. See
Figures 2.6, 2.7 and 2.8.
Figure 2.6 Install Screws
Figure 2.7 Install Screws
Figure 2.8 Install Screws

Heatilator • MTB28 Refractory • 4058-229 Rev B • 04/08
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3
3 Reassemble the Appliance
Figure 3.5 Replace Screw-Left Log
Figure 3.4 Replace Left Log
Figure 3.3 Replace Left Screw-Right Log
Figure 3.2 Replace Right Screw-Right Log
D. Replace Left Log
• Place the log bracket into the slot in the false back (Figure
3.4) and rotate the log back into position.
• Reattach with one screw on the left side of the log
(Figure 3.5).
C. Replace Right Log
• Place the right log.
• Fasten with two screws (Figures 3.2 and 3.3).
A. Replace Pilot Shield
• Replace the pilot shield and fasten in place with two screws
(Figure 3.1).
Figure 3.1 Replace Pilot Shield
B. Replace Glass Heat Shield
• See Figure 1.9.
¨

Heatilator • MTB28 Refractory • 4058-229 Rev B • 04/08 7
Figure 3.6 Replace Right Screw-Front Log
E. Replace Front Log
• Place log into position.
• Replace the right screw located behind the right side of
the log (Figure 3.6).
• Replace the left screw (Figure 3.7).
Figure 3.7 Replace Left Screw-Front Log
F. Replace Screen & Glass in Appliance
• See appliance owner’s manual.

Heatilator • MTB28 Refractory • 4058-229 Rev B • 04/08
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