Remove The Air Duct; Installing The Insert; Restrictor Installation - kozy heat 911-XXL Installation & Operating Manual

3. REMOVE THE AIR DUCT. Figure C-4.
A. Pull the lower end of the air duct out of the (4)
mounting holes at the back and lift the air duct
(manifold) up from the top of the firebox and
set aside.
D. INSTALLING THE INSERT
IMPORTANT: ALL STEPS IN SECTION 'A) PREPARE THE EXISTING FIREPLACE' MUST BE
COMPLETED BEFORE CONTINUING WITH THIS INSTALLATION.

1. Restrictor Installation

The restrictor plate included in this fireplace
components packet can be installed as either a large
or small restrictor, depending on your specific venting
configuration.
There are several factors which can affect proper draft
of the vent system and the burner operation of a
fireplace. Installing a restrictor may be necessary to
resolve the problem, even though it may not be
required under 'normal conditions'.
IMPORTANT: DO NOT INSTALL IF THE VENTING
CONFIGURATION IS AT THE MINIMUM
REQUIREMENTS!
The restrictor included is sized as the 'large' restrictor,
Figure D-1. To reduce the size to the 'small' restrictor,
simply bend the section without the tabs off at the
perforation and discard. Figure D-2.
To install the restrictor, refer to Figure D-3 and bend the tabs 'up' far enough (approximately 180-degrees) so that
when positioned into the exhaust pipe, will create tension to hold itself in place. Do not over bend the tabs! Slide
the restrictor into the exhaust pipe with the tabs pointing toward you. Access to the exhaust pipe can be gained
by removing the nuts securing the exhaust baffle at the back of the firebox.
Figure D-3
Figure C-4
Figure D-1
Large Restrictor
Figure D-2
Small Restrictor
Install with the
tabs pointing
TOWARD you.
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Remove this
section.