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 | |
Medium Cabinet | |
Large Cabinet | 46 x |
A template for ceiling
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:
CABINET | A | B |
SMALL | 23" | |
MEDIUM | ||
LARGE |
Prepare the installation guides by folding the metal bracket by hand along the row of holes.
FOLDED GUIDE
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.
OUTER CASE
INSULATION
CASSETTE CASE
INNER CASE INSULATION
FALSE CEILING
GUIDE IN
POSITION
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.
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