York YAKN09BZNWEUH1 Installation And Maintenance Manual page 10

Model
Capacity (Btu/h)
24K
36K/42K/48K/55K
Fig. 3.3 Suspension bolts
3.2.3 Install the indoor unit.
The installation of the indoor unit is shown in Fig. 3.4.
Suspension bolts (4-M10 or W3/8)
( Field supplied )
Fig. 3.4 The installation of the indoor unit
(1) How to fix the suspension bolts and the nuts
As shown in Fig. 3.5, the nuts are fixed by
four bolts.
Washer
Double nut
Fig. 3.5 Suspension bolts and nuts
(2) Install the indoor unit
·
As shown in the following figure, place the left
hanger bracket on the nuts and washers of the
suspension bolts.
·
Make sure that the left hanger bracket has been
fixed on the nuts and washers securely, install the right
hanger bracket suspension hook on the nuts and
washers.
(When installing the indoor unit, you can slightly
remove the suspension bolts.)
Air outlet
a
b
Air inlet
a b c
934 900 669
1334 1300 756
Nuts and
washers (4-
M1 0 or W3/ 8)
( Field supplied )
Nut
Indoor unit
Installation and Maintenance
Hanger bracket
Double nuts
and washers
3.2.4 The horizontal adjustment of the indoor unit
(1) Make sure that the hanger bracket is fixed by the nuts
and the washers.
(2) Adjust the height of the unit.
(Unit:mm)
(3) Check if the unit is positioned horizontally.
d
720
800
(4) After the adjustment, tighten the nuts and swear
the thread locker on the suspension to prevent the
nuts from loosening.
CAUTION
(1) During the installation, please cover the unit with the
plastic cloth to keep it clean.
(2) Make sure that the unit is installed level by using a level or
a plastic tube filled with water in instead of a level, adjust the
top surface of the unit to the surface of the water at both ends
of the plastic tube and adjust the unit horizontally.(one thing to
watch out for in particular is if it is installed so that the slope is
not in the direction of the drain piping, as this might cause
leaking.)
3.2.5 Installing the duct
CAUTION
· Make sure the external static pressure of the unit is within
the range.
·Connect the duct and intake-side flange.
·Connect the duct and outlet-side flange.
·The connection of indoor unit and air duct must be well
sealed and kept warm with insulation material.
<Example>
Static pressure
box Canvas duct
Insulation material
Air-outlet
Horizon
The valve for the amount of air
8
Suspension bolt
Rack
Indoor unit
Fig. 3.6
Fig. 3.7
Static pressure
Canvas duct box
Air inlet
Service mouth
(with filter)
（600mm-600mm）
The valve for
the amount of air
Outside air
(through
the filter)