Installation Instructions
Description
This kit is for use on 80% AFUE, 33” tall “H” and “S” model
furnaces installed in the upflow position only. This field in-
stalled kit may be used when a single forced draft furnace is
independently vented into a tile lined masonry chimney. This
kit may only be used with interior masonry chimneys or
qualifying exterior masonry chimney applications identified in
tables on Page 7.
The kit incorporates a flue high limit safety switch which will
interrupt power to the gas valve when a backdraft condition
exists.
The table on page 2 lists the kit number, the applicable models,
and the limit setting. The appropriate kit must be matched to
the appropriate model number for safe and reliable operation.
MVK-01 & MVK-02
MASONRY VENT KIT
INSTALLATION INSTRUCTIONS
ATTENTION INSTALLING PERSONNEL
RECOGNIZE THIS SYMBOL AS A SAFETY PRECAUTION
Prior to installing this masonry vent kit, refer to the National
Fuel Gas Code (NFPA 54ANSI Z223.1) or in Canada, CAN/
CGA-B149.2-M91 to ensure that the installation is in compli-
ance with those and all local codes. Prior to installation,
ensure the condition of the masonry chimney meets the
requirements outlined in the National Fuel Gas Code (NFPA
54/ANSI Z223.1), or the Standard for Chimneys, Fireplaces,
Vents, and Solid Fuel Burning Appliances (NFPA 211), or in
Canada, CAN/CGA-B149.1 and .2.
PLEASE READ AND FOLLOW THESE INSTRUCTIONS
CAREFULLY.
As a professional installer, you have an obligation to know the product better than the customer.
This includes all safety precautions and related items.
Prior to actual installation, thoroughly familiarize yourself with this Instruction Manual. Pay special attention to all safety warnings.
Often during installation or repair, it is possible to place yourself in a position which is more hazardous than when the unit is in operation.
Remember, it is your responsibility to install the product safely and to know it well enough
to be able to instruct a customer in its safe use.
Safety is a matter of common sense... a matter of thinking before acting.
Most dealers have a list of specific, good safety practices... follow them.
The precautions listed in this Installation Manual are intended as supplemental to existing practices. However, if there is a direct conflict
between existing practices and the content of this manual, the precautions listed here take precedence.
C
US
®
NOTE: Information contained in this manual (IO-754*),
supersedes MVK-01 and MVK-02 data found in the furnace IO.
I0-754D
June 2013