EMI CAC_36, Инструкция по установке, эксплуатации и обслуживанию

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7 Cassette Air Handler
Important - Replace the existing
piston (before installing the unit) with
the piston supplied in the Kit bag: when a
Cassette 24 air handler is matched with a T2CA/
T2hA4400, T2CA/T2hA2400, T2CA/T2hA8400, T3CA/
T3hA9240, T3CA/T3hA2240, or T3CA/T3hA9940 condenser which
has a 24,000 Btuh compressor (“4” in the capacity decoding field) the
piston will need replacement only on the 24,000 btuh zone. *
EMi air handlers units contain the appropriate piston for the model. Refer to this docu-
ment to determine if a change is required based on the condenser rating. if the match is
not listed below no piston change is required. (See chart)
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.
Refer to the “Cassette Dimensions”
section in the back of this manual for
dimensional drawings.
2. The unit should be positioned at least
5 ft. (1.5m) from a wall or similar ob-
struction. 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 direct
-
ly above any obstructions.
5. The condensate drain should have suf
-
ficient fall 1” per 10’ (8mm/m) in any
horizontal run between Cassette and
drain. Maximum condensate pump lift is
36” (0.9m).
6. There should be a minimum 1”
(25.4mm) clearance above the depth
of the Cassette and the false ceiling
for proper installation, shown below
Figure #1 (see the “Cassette Dimen-
sions”
section in the back of this IOM
for cabinet sizing):
Dimension A + 1” = minimum space
above the false ceiling for installation
A
A +1”
Figure #1
model #
Air handlers
Condenser Btuh
factory Installed
Piston-Orifice Size
field Changeover
Piston-Orifice Size
CAHA / CAHB24
T2CA/T2HA4400
T2CA/T2HA2400
T2CA/T2HA8400
.059” .063”
CAHA / CAHB24
T3CA/T3HA9240
T3CA/T3HA2240
T3CA/T4HA9940
.059” .063”
*
“4” in the capacity decoding field = 24,000 Btuh
Air handlers
pISTON/ORIfICE INSTALLATION INSTRUCTION
Cabinet dimension A
Cassette 12
11.84” (0.3 m) min.
Cassette 24
12.55” (0.32 m) min.
Cassette 36
14.51” (0.37 m) min.