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5. Be certain that the vent tubing will remain in an upward
position during the operating life of the pump.
General Installation Notes:
• After connecting the reservoir inlet, reservoir-to-pump, vent,
and discharge tubing, ensure that the reservoir and pump
remain positioned correctly.
• Keep all tubing and wires clear of moving parts in the air handler.
• Upon completion of the installation, test the pump and all
connections, observing that water is being pumped to the
discharge point.
ELECTRICAL CONNECTIONS
BEFORE CONNECTING POWER LEADS, SHUT OFF ELECTRICAL
POWER
AT FUSE- OR BREAKER-BOX. ALL WIRING MUST
COMPLY WITH LOCAL ELECTRICAL AND BUILDING CODES,
AS WELL AS THE MOST CURRENT NATIONAL ELECTRIC
STANDARDS. CHECK CONTROL UNIT/PUMP LABEL FOR
PROPER VOLTAGE REQUIRED. DO NOT CONNECT TO VOLTAGE
OTHER THAN THAT SHOWN ON CONTROL UNIT/PUMP LABEL.
The EC-1 is designed to be used with an earth-grounding
conductor. To reduce the risk of electrical shock, connect the
earth lead to a properly-grounded circuit. The use of a ground fault
circuit interrupter is recommended.
All wiring should be performed by a qualified installer approved by
local regulations and National Standards. For best performance,
connect the control unit/pump to a separate circuit. The control
unit/pump MUST BE CONNECTED TO A CONSTANT POWER
SUPPLY, NOT AN INTERMITTENT SOURCE SUCH AS A FAN OR
LIMIT CONTROL CIRCUIT.
Power Supply:
1. Attach power cord lead wires from the control unit/pump to
a power supply with voltage output that matches the voltage
rating on control unit/pump.
2. The power leads are color-coded as follows:
a. BLUE = Neutral (115 V) or L1 (208/230 V)
b. BROWN = Live (115 V) or L2 (208/230 V)
c. GREEN/YELLOW = earth (ground)
3. A UL listed/VDE-certified fuse (purchased separately) should
be fitted in the line lead of the power cable supplying the
control unit/pump. The actual current rating of the fuse will
depend on the type of fuse and local standards. Typical values
by model are shown below:
MODEL (voltage)
EC-1 or EC-1K (115 V)
EC-1 or EC-1K (230 V)
EC-1-DV or EC-1K-DV (110 - 240 V)
OVERFLOW PROTECTION SWITCH CONNECTIONS
The unit is equipped with an overflow protection switch with a
maximum rated switching current (resistive load) of 3 amps at 250
VAC or 3 amps at 30 VDC. This circuit is intended to drive a low
power control or alarm circuit and is not sufficient to operate and
switch a large-amperage inductive load.
1. Connect the wires as described below to obtain the
desired response.
2. The overflow protection switch wires are color coded as follows:
a. WHITE or GREY = common
4
WARNING
FUSE
0.50 A
0.20 A
0.50 A
b. RED or ORANGE = normally open
c. BLACK or PURPLE = normally closed
Connecting to Common and NC (Normally Closed) Wires:
When a high-water or overflow condition occurs, the normally
closed circuit opens to turn off the compressor, thus stopping the
flow of condensate water.
1. This is typically done by breaking either the power (R) or
cooling (Y) leg of the low-voltage thermostat.
2. Check with the air conditioner manufacturer to confirm that this
is acceptable for the air conditioner in the application.
3. If acceptable, confirm which thermostat wire is to be interrupted.
4. This connection can also be used with central control systems
to control the air conditioner operation.
5. NOTE: When connected in this manner, if a high water
condition occurs, the air conditioner should not run until the
high-water condition is fixed. This method should not be used
if the cooling or heating requirements are a necessity. The
alarm method (normally open circuit) should be used instead.
Connecting to Common and NO (Normally Open) Wires:
When a high-water or overflow condition occurs, the normally open
circuit closes to activate a bell or alarm (not provided, purchased
separately), or to send a signal to a central control system.
1. NOTE: When connected in this manner, if a high water or
overflow condition occurs, the air conditioner is not shut
down and may continue to produce condensation, creating a
potential overflow condition and risk of flooding until the high
water condition is fixed.
TESTING THE OVERFLOW PROTECTION
SWITCH OPERATION
After the installation is complete and power has been restored to
the air conditioner and control unit/pump, test the operation of the
overflow protection switch to make certain that the installation was
done correctly.
1. Turn on the air conditioner.
2. Pour water into the drain tray of the air handler until the pump
energizes. NOTE: Do not continue to pour water if an overflow
condition (flooding) is imminent.
3. Continue to pour water into the drain tray until the overflow
protection switch activates.
4. If the overflow protection switch is wired to the normally
closed configuration described above, the air conditioner
should turn off. It should remain off until the pump lowers the
water level in the reservoir to a middle level associated with
alarm-off position.
5. If the overflow protection switch is wired to the normally open
configuration described above, the alarm or bell (purchased
separately) should sound. The alarm or bell should continue
to sound until the pump lowers the water level in the reservoir
to a middle level associated with alarm-off position.
6. When the pump has removed enough of the water to allow
the overflow protection switch to deactivate, the air conditioner
should come on or the alarm or bell should stop sounding,
depending on the configuration used.
SERVICE INSTRUCTIONS
ENSURE THAT THE UNIT IS DISCONNECTED FROM THE POWER
SOURCE BEFORE ATTEMPTING TO SERVICE OR REMOVE ANY
WARNING
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