17
The units leave the factory with the air discharge set to hori-
zontal. It can be changed to vertical discharge by following
the steps below.
Change from horizontal (standard) to vertical discharge with
changing the position of the motor. See Fig.1, depending
on model.
a) Detach the side access panels
1
.
b) Remove the drive belt(s)
6
.
c) Unscrew the fans from the brackets
4
securing them
to the base.
d) Detach the rear panel with the fan outlets
2
and the
top panel
3
.
e) Detach the tension base together with the motor
9
and
position it on the opposite side from where it was.
f) Remove the fan pulley
1
and reposition it on the other
side.
g) Interchange the position of panels
2
and
3
, fastening
them correctly to the unit.
h) Bolt the U-bracket
4
to each fan.
i) Bolt the U-bracket
5
to the angle iron
4
holding the
fans to the base.
j) Replace the drive belt(s) and ensure that the tension
is correct.
k) Replace the access panels
1
.
Fig. 15 - Repositioning unit air discharge (40ALZ)
Supply
air
Return
air
Return
air
Supply
air
Return
air
Supply
air
Return
air
Return
air
Supply
air
Legend
1
Side access panel
6
Drive belt(s)
2
Rear discharge panel
7
Roof panel
3
Top panel
8
Fan pulley
4
Angle iron to attach fan to base
9
Base
5
U-bracket
Condensate drainage
40ALZ units are supplied with a condensate drain pan with
two drain pipes (outside diameter 3 mm). These tubes leave
the factory separately wrapped so it is easy to check them.
The connection to the drain pipe can be vertical (see Fig. 16)
or horizontal (see Fig. 17).
•
Vertical drain: Remove the prepunched knockout(s)
in the unit base.
•
Horizontal drain: Drainage through holes in the side
of the unit base, to the right- or left-hand side.
Fig. 16 - Vertical drain
Drain pipe 23
mm OD
Hole in unit base
Interior drain
pan
Unit base
75 mm
100 mm
Field-supplied
trap
Fig. 17 - Horizontal drain
Drain pipe 23
mm OD
Outlet panel, unit side
Interior drain pan
Unit base
Field-supplied
trap
75 mm
100 mm
The field-installed trap must be below the drain pan.
the drain pipe must never be higher than the drain pan.
Fig. 18
Supply
air
Return
air
YES
NO
