KwiKool CeilingMaster KCA Series, Operation Manual

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Page 8
External Alarm Signal Connections - All KCA/KCW units are equipped with an alarm
signal output relay type (Form-C, normal open dry contacts), which can be used for
monitoring basic unit failure functions. Relay contactor (no connector) is closed when
the following condition has occurred:
I.
Condensate Tank Overflow
High Pressure Switch Closed
Low Pressure Switch Engaged
Cooling Function Fails
1.
2.
3.
4.
The output of the relay is rated at 5A at 30VDC or 5A at 250VAC (resistive load). This
can be used to connect output is compatible with various warning devises such as
alarm speakers, light indictors, etc.
Alarm contacts are labeled A1 and A2 on the external terminal block. Connect the
warning device to these terminals.
The recommended warning signal wire size is 16AWG to 26AWG for a solid or
stranded wire.
Fire Alarm Control Panel or Emergency Shut Off Connection - The KCA/KCW unit is
equipped with a normally closed circuit which can be used to shut down the unit in a fire
or emergency situation. Opening this circuit will shut the unit down and will not come
back on until the circuit is reclosed.
J.
Connecting Fire Alarm Control Panel or EPO (Emergency Power Off) to KCA/KCW -
First remove the jumper from the S1 and S2 terminals of the external terminal block.
Connect the fire alarm signal wires or EPO wires to your KCA/KCW on the S1 and S2
terminals on the external terminal block. Test functionality.
The recommended fire alarm signal wire size is 16AWG to 26AWG for a solid wire, or
16AWG to 22AWG for a stranded wire. This function is used for test purposes and
verification.
K.
Ducting for use with Typical Drop Ceiling - Ducting for both supply and return
including a filter grill with filter will need to be supplied by the installer. All ducting
should be of the insulated type to prevent condensation from forming on the duct and
dripping on or around the installation. All duct should keep an bends to a minimum and
should be the largest radius possible. Make sure that all ducts are properly secured to
maintain proper airflow and integrity of the cooling section. Avoid sharp bends and try
to make air ducts travel in a straight line for best performance.
L.
Insulated supply duct(s)
Filter return air grill with a filter for evaporator air intake
Diffuser(s) for cold air
Duct clamps
1.
2.
3.
4.
The following field supplied items are required:
CAUTION: DO NOT OPERATE UNIT WITHOUT A FILTER INSTALLED IN THE RETURN
AIR FILTER GRILL