Harman® • P35i-C Installation Manual_R2 • 2019 -___ • 02/20
12
8390-784i
Installing the P35i-C Pellet Insert into an
existing factory built wood burning fireplace
When installing the P35i-C Pellet Insert into a factory
built wood burning fireplace, the Manufactured Fireplace
Installation Kit #1-00-574205 must be used. In addition,
several things need to be taken into consideration.
The size of the fireplace opening. Will the unit fit into the
opening? Many of these units have metal smoke shields
inside the top that can be removed to gain height. Often the
side and rear refractory can be removed to gain depth and
width. In some circumstances, the front lower lip or grill work
may also be removed. Be sure and follow the guidelines in
the kit instructions. Floor protection guidelines, as listed on
Figure 3.2 must also be followed.
The factory built chimney must be listed per UL 127 (US)
and meet type HT requirements of UL 103 (US). Factory
Built fireplace chimneys tested to UL 127-98 may be, at the
fireplace manufacturers option, tested to the same criteria
as UL 103HT requirements. If the chimney is not listed as
meeting HT requirements, or if the factory built fireplace was
tested prior to 1998, a full height listed chimney liner must be
installed from the appliance flue collar to the chimney top.
Liner must meet high temperature (2100° F) per UL1777
(US). The liner must be securely attached to both the flue
collar and the chimney cap. To prevent room air passage to
the chimney cavity of the fireplace, seal the damper area
around the chimney liner with fiberglass batting.
Note: If the Harman® P35i-C Pellet Insert is installed into a factory built wood burning fireplace, this label (Harman®
part #3-90-674204) MUST
be attached to the altered fireplace. This label is included in the Manufactured fireplace
installation kit.
THIS FIREPLACE HAS BEEN ALTERED TO ACCOMMODATE A
FIREPLACE INSERT AND SHOULD BE INSPECTED BY A QUALIFIED
PERSON PRIOR TO REUSE AS A CONVENTIONAL FIREPLACE
Figure 4.5
OPTIONAL HOPPER CONFIGURATIONS FOR SMALLER FIREPLACE
OPENINGS:
The Harman® P35i-C Pellet Insert can be factory built with shorter hopper
configurations.
The standard requires a 23-1/2" opening. Part #1-70-774235
Option 1: Requires a 19-1/2" opening height. Part #1-70-774195
Keep in mind the hopper capacities will decrease with the optional heights.
19.5"
23.5"
IN CANADA:
This fireplace insert must be installed with a continuous
chimney liner of a minimum 4" diameter extending from the insert to
the top of the chimney. The chimney liner must conform to the Class 3
requirements of CAN/ULC-S635, Standard for Lining Systems for Existing
Masonry or Factory Built Chimneys and Vents, or CAN/ULC-S640,
Standard for Lining Systems for New Masonry Chimneys.
Additionally, the firebox floor of the Zero Clearance Wood Fireplace may be removed down to the outer metal shell of
the fireplace if kit 1-00-574305 is used. The kit includes installation instructions and all materials needed to remove
the firebox floor and still maintain a safe, compliant installation. Be certain to contact local code enforcement officials
before beginning any modifications, as they may not be reversible in many cases.
