QUANTECH
FORM QCC3-EG1 (517)
50
UNIT LOCATION
The QCC3 Condensing Units are designed for outdoor installation. When selecting a site
for installation, be guided by the following conditions:
1. For outdoor locations of the unit, select a place having an adequate supply of fresh
air for the condenser.
2. Avoid locations beneath windows or between structures where normal operating
sounds may be objection able.
3. Installation sites may be either on a roof, or at ground level. (See
FOUNDATION
,
below.)
4. The condenser fans are the propeller-type, and are not recommended for use with
duct work in the condenser air stream.
5. When it is desirable to surround the unit(s), it is recom mended that the screening
be able to pass the required chiller CFM without exceeding 0.1” of water external
static pressure.
6. Protection against corrosive environments is available by supplying the units with
either copper fin, cured phenolic, or epoxy coating on the condenser coils. The phe
-
nolic or epoxy coils should be offered with any units being installed at the seashore
or where salt spray may hit the unit.
In installations where winter operation is intended and snow accumulations are expected,
additional height must be provided to ensure normal condenser air flow.
Recommended clearances for units are given in
Dimension Drawings on page 26
.
When the available space is less, the unit(s) must be equipped with the discharge pres-
sure transducer option to permit high pressure unloading in the event that air recirculation
were to occur.
FOUNDATION
The unit should be mounted on a flat and level foundation, ground or roof, capable of sup-
porting the entire operating weight of the equipment. Operating weights are given in the
Physical Data on page 25
tables.
Roof Locations
– Choose a spot with adequate struc tural strength to safely support the
entire weight of the unit and service personnel. Care must be taken not to damage the roof
during installation. If the roof is “bonded”, consult the building contractor or architect for
special installation requirements. Roof installations should incorporate the use of spring-
type isolators to minimize the transmission of vibration into the building structure.
Ground Level Installations
– It is important that the units be installed on a substantial
base that will not settle, causing strain on the refrigerant lines and resulting in possible
leaks. A one-piece concrete slab with footers extending below the frost line is highly rec-
ommended, particularly in areas where winters are long and very cold. Additionally, the
slab should not be tied to the main build ing foundation as noises will telegraph.
Application Data
Summary of Contents for QCC3
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