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WATER COOLED SPLIT
AIR CONDITIONERS
INSTALLATION, OPERATION AND MAINTENANCE
SERIES
Each split air conditioner has been checked out prior
to shipment. Failure to operate after installation
indicates damage in transit or improper installation.
INSPECTION
Check packaging during unloading. Note transit
damage on all copies of bill of lading. Inspect air
conditioners for hidden shipping damage after
packaging is removed. Transit damage claims must
be filed promptly with freight company by purchaser.
HANDLING
Always handle
units flat on their base
. Moving or
placing a horizontal unit on end, or dropping it may
damage internal parts and displace oil from the
compressor's crankcase.
STORAGE
If jobsite storage is necessary, place the unit in a
clean, warm dry area. Follow instructions under
Handling.
LOCATION
Note that units with different capacities may have
identical dimensions. Labels on unit packaging must
be carefully scrutinised and matched to job location.
These units are not approved for outdoor installation
and therefore must be installed inside the space
being conditioned.
PLACEMENT
Install split air conditioners in a level plane and locate
unit around the service panel to ensure that proper
access is available.
WIRING
All wiring should conform to the CEC and/or local
code requirements. Power disconnect shall be field
provided (by others). The wiring diagram is located on
electrical box cover on vertical models and on the
back of the service panel on horizontal models. Make
certain the line voltage and the 24 volt control circuit
are properly identified and wired in accordance with
the unit wiring diagram.
Water cooled air conditioners are classified as
direct (permanently) connected devices by the
CEC. Split air conditioners must be properly
grounded as per instructions on the unit wiring
diagram.
Connecting to Evaporator:
Evaporator must be sized according to the
Condensing unit capacity. Fan interlock must be
installed according to local codes & supplied wiring
diagram.
Proper vacuum must be performed and system
charged with enough refrigerant (R410A) to maintain
48°F suction & 105°F condensing temperature in an
80/67°F environment
WATER SUPPLY (UNIT CONNECTED ON OPEN
WATER CIRCUIT)
The source of water for split air conditioner operation
is the responsibility of the owner and/or the installing
contractor. The split air conditioner
must not
function without water
, and predetermined rates of
flow (l/s or USGPM) must be maintained for the unit
to opera-te at rated capacity. Since the water function
is to absorb heat from the refrigerant, the flow rate for
each model varies with the entering water
temperature (EWT). A pressure-operated water valve
is installed for this reason inside the unit and SAE-13
calibrated at the factory for a condensing pressure of
2816 kPa "gauge" (336 PSIG.). Piping size to and
from unit
must match or exceed
the inlet and outlet
water connection sizes on the air conditioner.
WATER CONNECTIONS
If flexible hoses are used to make the water in-out
connections to the unit, certain precautions must be
taken to ensure proper unit operation and avoid hose
damage.
Never use
a hose of a smaller inside diameter
than that of the water connection sizes on the
unit.
The hoses must be rated to match or exceed
