85-03-01145
ML54
Page
61
5.11
VENTING
WARNING: Proper installation of the vent system, as required in this manual, is vital to the performance of
this Fireplace. Oversights or failure to conform to all installation requirements will void the applicable
warranty.
This heater must be pro perly connected to a venting system in accordance with the manufacturer's
installation instructions. Operation of this heater when not connected to a properly installed and
maintained venting system can result in carbon monoxide (CO) poisoning and possibly death.
If the vent system of this appliance is disconnected for any reason, the vent systems must be properly
reassembled and resealed before this appliance is put into use.
CAUTION:
Each installation must conform to all local, state and national codes. Refer to the national fuel
gas code and local zoning and code authorities for details on installation requirements. The Mendota
Fireplaces must be vented to the outside in accordance with the latest edition of the National Fuel Gas
Code. In the absence of local codes, the installation must conform with National Fuel Gas Code ANSI Z223.1
(NFPA 54), or Canadian Code CAN1 -B149 or most current edition, also known as NFPA 54. Do not conne ct
this Fireplace to a chimney flue serving a separate solid fuel or gas -burning appliance.
The ML54 Fireplace must be vented to the outside and must use one of the approved coaxial rigid ducting
systems.
Do Not Use any silicone sealants at pipe joints. St ove gasket cements may be used at pipe
joints but is not required
.
Wall Thimble Information
A wall thimble is required to be installed when penetrating any combustible wall, regardless of whether the wall Is an internal wall
or an external wall.
Wall thimbles are designed to reduce the required clearances to the exterior surfaces of the vent pipe that pass through
combustible walls. The hole size that is specified to be cut in the wall for installation of the wall thimble takes into consideration the
reduced clearance requirement.
