York YKCA 18 Installation & Owner's Manual page 14

Stick insulation material 4 at indoor hole
Figure 2
Use screw 2 (M4 x 12, 4 Pieces) to install flange at the hole, and then stick insulation material 3.
Screw 2
(M4 x 12, 4 pieces)
Install duct (the rated diameter: Ø 75)
1. Connect the duct to the flange. (The flange is assembled with the interface of duct.)
2. After connection, use the ethylene tape (provided on field) to wrap the joint to prevent air-leakage.
Note:
1. All ducts must be completely heat-insulated.
2. The following phenomena are not allowed when installing duct:
A) Bend too much
Wrong
14
ENGLISH
Installation Type 1
Put the insulation material 4 on the interface
of the hole as shown in Figure 2, then stick on
the inside and surface of the board. The
interface of the hole cannot have gap.
Insulation material
(inside)
Edge
About 10 mm.
Ensure the interface of insulation material 4 closely contacts
with the inside insulation material and the board.
Flange 1
Insulation material 3
Figure 3
Flange Wrap the joint to prevent air-leakage
Airproof adhesive tape
B) Too many bender
Wrong
YORK INSTALLATION & OWNER'S MANUAL (EN) 035M80090-000
Installation Type 2
Stick insulation material at the
opening part of the board.
Board
Insulation material
Flange 1
Screw 2
(M4 x 12, 4 pieces)
Insulation material 3
Ø 75 Duct (on field)
C) Diameter reduce
Wrong
Board
Insulation material