ENVIROMASTER INTERNATIONAL LLC
3
1. Position the thermostat approximately 5 ft. above floor
level.
2. Do not position thermostat where it can be directly
affected by the unit’s discharge air stream.
3. Avoid external walls and drafts from windows and doors.
4. Avoid positioning near shelves and curtains as these
restrict air movement.
5. Avoid heat sources (direct sunlight, heaters, dimmer
switches, etc.)
CEILING OPENING:
Before beginning the installation, in-
spect the unit location, test the strength of the unit
mountings
(see “Mechanical Information” in this IOM)
. An
opening in the false ceiling will then have to be cut to the
following sizes:
Small Cabinet
23-1/4” x 23-1/4”
Medium Cabinet
33-7/8” x 33-7/8”
Large Cabinet
46 x 33-7/8”
A template for ceiling cut-out and rod positions can be found
with the Cassette unit.
NOTE: Make sure the ceiling grid is supported separately
from the Cassette. The ceiling must not be supported by
any part of the Cassette unit, fascia or any associated wir-
ing or pipe work.
The hanger bolts can now be installed (use 3/8 all thread
rod) at the centers shown below:
Prepare the installation guides by folding the metal bracket
by hand along the row of holes.
The Cassette can now be lifted onto the hanging rods and
leveled at the correct distance from the ceiling with the aid of
the installation guides as shown.
FOLDED GUIDE
NOTE:
If the ceiling is not level or even, it is important
that the Cassette is installed level to ensure correct
pump operation and to maintain fan clearances. Any
slight discrepancy between the Cassette and ceiling
will be taken up by the fascia foam seal.
Secure unit in position with locknuts and washers on either
side of the Cassette bracket. Ensure threaded rod does not
protrude more than 2” (dimension C) below the mounting
bracket.
The unit can now be piped up in accordance with good refrig-
eration and/or plumbing practices.
CONDENSATE PIPEWORK:
The Cassette is supplied with
a 1/2" diameter flexible PVC hose for connection to copper
or plastic drain pipework. When installing the Cassette the
following points should be remembered:
1. Maximum pump lift is 18”.
2. The highest point in the condensate pipework should be
as close to the unit as possible. This prevents a large
volume of water draining back into the unit when it is
switched off.
INNER CASE INSULATION
OUTER CASE
INSULATION
CASSETTE CASE
FALSE CEILING
GUIDE IN
POSITION
CABINET
A
B
SMALL
19-1/2"
23"
MEDIUM
29-5/8"
31-1/2"
LARGE
29-5/8" 43-11/16"
