Step 3. Preparing Appliance Vent Collar; Step 4. Installing Vent System - Lennox Merit Plus Series Installation Instructions Manual

LENNOX HEARTH PRODUCTS • MERIT PLUS
Step 3. PREPARING APPLIANCE VENT
COLLAR
The unit's top and rear vent collars are each
sealed with a cover plate and gasket. The cover
plate and gasket must be removed from the ap-
plicable vent collar being used. Refer to Page 13
for rear vent applications and Page 14 for top
vent applications. Also refer to the following
steps to prepare the appropriate collar for use.
From the vent collar being used, remove the
four screws securing the cover plate and gasket.
Discard the cover plate and gasket. Reinstall all
four screws and tighten securely.
WARNING
Vent cover plate and vent seal cap
must remain securely installed
on unused vent collar. Failure
to reinstall and securely tighten
cover plate screws could result
in leakage of flue products into
the living space.
12
DIRECT VENT GAS FIREPLACES (MPDP35/40) • INSTALLATION INSTRUCTIONS
®

Step 4. INSTALLING VENT SYSTEM

These instructions should be used as a
guideline and do not supersede local codes
in any way. Install venting according to local
codes, these instructions, the current National
Fuel Gas Code (ANSI-Z223.1) in the USA or
the current standards of CAN/CSA-B149.1
in Canada.
Ensure clearances are in accordance with
local installation codes and the requirements
of the gas supplier.
Dégagement conforme aux codes d'installa-
tion locaux et aux exigences du foumis-
seunde gaz.
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Use only approved vent components (see
Approved Vent Components on Page 2).
NOTE: These fireplaces must be vented
directly to the outside.
The vent system may not service multiple
appliances, and must never be connected to a
flue serving a separate solid fuel burning appli-
ance. The vent pipe is tested to be run inside
an enclosed wall (such as a chase). There is
no requirement for inspection openings in the
enclosing wall at any of the joints in the vent pipe.