Lennox DFC-A Installation Instructions

Litho U.S.A.
2011
©
INSTALLATION INSTRUCTIONS AND HOMEOWNERS MANUAL FOR DOWNFLOW FILTER CABINET MODELS
DFC-A(51W06), DFC-B(51W07) AND DFC-C (51W08) USED ON DOWNFLOW FURNACES
WARNING
Improper installation,
service or maintenance can cause property damage,
personal injury or loss of life. Installation and service
must be performed by a licensed professional HVAC
installer or equivalent, service agency, or the gas
supplier
WARNING
Risk of equipment damage and/or high energy
usage.
Dirty air filters will cause high energy usage and/or
damage to the ventilation system. Replace filters at
recommended intervals.
Shipping & Packing List
Package 1 of 1 contains:
2 - Side panels
1 - Door frame
1 - Rear panel
1 - Door
20 - #8 screws x 3/8" (includes 2 extra)
1 - Bottom filter rail 51W07 and 51W08
1 - 20" x 20" x 1" washable filter 51W06
2 - 20" x 61" x 1" washable filters 51W07 and 51W08
1 - Installation instruction
Application
Kits 51W06, 51W07 and 51W08 provide filter cabinet to
be used in downflow applications.
Rules for Safe Installation
WARNING
Risk of Carbon Monoxide poisoning.
Can cause injury or death.
Do not operate without Filter Cabinet door in place.
Operation of this equipment without Filter Cabinet
door in place may cause exhaust fumes to be drawn
into occupied spaces.
GAS UNITS
KITS & ACCESSORIES
506584-01
06/2011
Supersedes 04/2011
adjustment, alteration,
1 - Read this manual carefully. Failure to follow
these instructions could cause a malfunction or
unsatisfactory service.
2 - Clean the filter at regular intervals to ensure efficient
operation.
Unpacking
As with any mechanical equipment, contact with
sharp sheet metal edges can result in personal
injury. Take care while handling this equipment and
wear gloves and protective clothing.
Remove all protective material from the cabinet. Discard
all packing material properly. See figure 1 for DFC-A and
figure 2 for DFC-B and DFC-C parts identification.
Assembly
Assembly of DFC-A Figure 1
1 - Use the provided screws to assemble the rear and
side panels. Both side panels and rear panels have
a filter support rail
2 - Install the door frame on the front of the side panels.
Do not install the door at this time.
3 - Position the assembled filter cabinet on the furnace.
Align the holes in the bottom of the filter cabinet with
holes in the top of the furnace flange. Use six of
the provided screws and secure the cabinet to the
furnace. Install the filter and door.
Assembly of DFC-B and DFC-C Figure 2
1 - Center the bottom filter rail on the furnace cabinet
and secure in place
2 - . Use the provided screws to assemble the rear and
side panels. Both side panels and rear panels have
a filter support rail.
3 - Install the door frame on the front of the side panels.
Do not install the door at this time. Position the
assembled filter cabinet on the furnace. Align the
holes in the bottom of the filter cabinet with holes in
the top of the furnace flange. Use six of the provided
screws and secure the cabinet to the furnace. Install
the filter and door.
Page 1
DOWNFLOW FILTER
CABINET KIT
CAUTION