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www.enviromaster.comCAC Cassette Evaporator 6
CAC CASSETTE PREPARATION AND POSITIONING
POSITIONING
The Cassette installation position should be
selected with the following points in mind:
1. Pipe work, electrical connections, con
-
trol box and condensate pump access
panels should be readily accessible.
2. The unit should be positioned at least
5 ft. from a wall or similar obstruction.
Position the unit as close to the center
of the room as possible to insure air is
distributed evenly.
3. Position the unit so that the discharge air
does not blow directly on the thermostat.
4. The unit should not be positioned di
-
rectly above any obstructions.
5. The condensate drain should have suf
-
ficient fall (1” per 10’) in any horizontal
run between Cassette and drain. Maxi
-
mum condensate pump lift is 36”.
6. There should be a minimum 1” clear
-
ance above the depth of the Cassette
and the false ceiling for proper instal
-
lation, shown below (see the “CAC Di-
mensions” section in the back of this
IOM for cabinet sizing):
Small Cabinet Dimension A = 12¾” min.
Medium Cabinet Dimension A = 11½” min.
Large Cabinet Dimension A = 13½” min.
Dimension A + 1” = minimum space
above the false ceiling for installation
A
A +1”
Figure #1
Model #
Evaporator
Condenser
Btuh
Factory Installed
Piston-Orifice Size
Field Changeover
Piston-Orifice Size
CACA24
T2CA4400
T2CA2400
T2CA8400
.059” .063”
CACA24
T3CA9240
T3CA2240
T3CA9940
.059” .063”
* “4” in the capacity decoding field = 24,000 Btuh
Evaporator
Importent - Replace the existing
piston (before installing the unit)
with the piston supplied in the Kit Bag:
when a CACA24 evaporator is matched with a
T2CA4400, T2CA2400, T2CA8400 or T3CA9240, T3CA2240,
T3CA9940
condenser which has a 24,000 Btuh compressor
(“4” in the capacity decoding field) the piston will need relacement
only on the 24,000 Btuh zone. *
Your EMI evaporator unit contains the appropriate piston for your model. Refer to
this document to determine if a change is required based on your condenser rating. If
your match is
not listed below no piston change is required. (See chart)
PISTON/ORIFICE INSTALLATION INSTRUCTION