Nordyne M3RL Series - Manual (Page 12)

12
TABS TABS
DUCT DUCT
1. INSERT DUCT PLENUM CONNECTOR
INTO DUCT CUT-OUT. 2. BEND BOTTOM TABS OVER
AND ONTO THE UNDERNEATH
DUCT SERVICE.
Staple Folded Duct
Flap (typ) to side of Duct
Connector
Duct
STEP 4.
STEP 1.
"A" "A"
"B"
"B" Cut- Out
Area"A" Cut- Out
Area "A"
Fold Back Flap "B"
Fold Back Flap "B"
Top of Duct
"A" "A"
STEP 2.
"B"
"B"
Fold Back Flap"B"
Cut
Lines Duct
Fold Back Flap"B"
STEP 3.
Bend Duct Connector Tabs Up
and Over- (along length of duct)
Duct
Flap "B"
Duct
Duct
Duct Connector
Narrow Duct
Figure 12. Alternate Installation
Figure 11. Narrow Duct Installation
Figure 10. Installation of Duct Connector
nector. Additional screws may be added if
required.
e. Cut away along edge of flange allowing the
center to drop into the duct. Remove section
of duct with caution, as edges will be sharp.
INSTALLING FINGER TABBED DUCT CON-
NECTORS
a. Place duct connector through the floor open-
ing with bottom tabs extending through the
duct opening. (See Figure 9)
b. Secure duct connector to floor.
c. Bend bottom tabs under and up tightly against
the supply air duct (See Figure 10).
NOTE: The duct connector is designed for use
on ducts 12" in width. When using the connec-
tor on 12" wide ducts, there may be insufficient
clearance to bend the tabs on two sides of the
duct connector. In such cases the tabs may be
attached to the sides of the duct by using sheet
metal screws or other suitable fasteners. (See
Figure 11).
If sealant, mastic, or tape is used to provide a
better seal, it should be approved by applicable
national or local codes.
ALTERNATE ATTACHMENT METHODS
This procedure may also be used to install a
furnace duct connector to narrow metal
ductwork where insufficient clearance prevents
bending of the duct connector tabs at the
side(s) of the duct. (See Figure 12).
1. Score and cut the top of the metal duct as
indicated in Step 1 or Step 2. With Step 1
choice, also cut out the metal from the shaded
area “A”.
2. Fold the duct flap “B” up, (See Step 3).