Product Overview

1
PRINCIPLES OF OPERATION
FOR ASPEN MINIPUMPS
Imported and Distributed by
3 Kellogg Court, Unit10, Edison, NJ 08817
•
www.eztrap.com
phone [phone]
•
fax [phone]
•
email: [e-mail]
Both types are supplied with
2 incoming cables:
1. A power supply cable, which always
has 3 conductors, color coded for different
voltages in accordance with the NEC.
Conductors for 115 volt pumps are white,
black and green, and conductors for
230 volt pumps are red, black and green,
and these colors are standard for all
models which operate on line voltage.
2. An overflow alarm cable, which is
designed to break the communication
wire between the condenser and the
evaporator in case the water level in the
reservoir rises to an unacceptable level.
This cable also has 3 conductors, gray
(common), purple (normally closed) and
orange (normally open), and this color
coding is identical for all pump models.
CONNECTION OF THE OVERFLOW
SWITCH IS MANDATORY. FAILURE
TO DO SO WILL INVALIDATE
MANUFACTURER’S WARRANTY
AND ALMOST CERTAINLY LEAD TO
FLOODING AND WATER DAMAGE.
NOTE: The overflow switch contacts are a
separate volt-free circuit which operates
entirely independently from the power
circuit that automatically switches the
pump on and off as the water level rises
or subsides.
NOTE ALSO that the overflow switch
is electronic and draws its power
directly from the PCB in the pump,
so the switch itself cannot operate
unless the pump is powered.
NOTE: The overflow switch is designed
for a maximum load of 5 amps up
to 230 volts, which is normally more
than enough for most Minisplits as
the current and the voltage carried in
the communication wire are usually
well below this.
Standard wiring diagrams for most
Minisplit manufacturers are available
at WWW.EZTRAP.COM or
WWW.ASPENPUMPSUSA.COM for
download, or can be emailed or faxed
on request.
If the 5 amp limit is exceeded, it will be
necessary to use a single pole switching
relay to handle this current to prevent the
electronics in the pump from burning out.
Specific wiring diagrams for this type of
installation are available from EZ-TRAP
on request.
Some Minisplits have communications
wires which are sensitive because they
utilize proprietary operating protocols,
and these may have to be wired in a
different way. In these cases the overflow
switch must be wired only according to a
wiring diagram dedicated to that partic-
ular manufacturer and/or model series.
Specific wiring diagrams for this type
of installation are also available from
EZ-TRAP on request.
Some Minisplits include a dedicated set of
contacts on the PCB in the evaporator into
which the overflow wires can be connected
as per the specific wiring diagrams
provided by that manufacturer, and if an
overflow does occur, the unit will
automatically turn off and an alarm LED
will flash on the control panel of the unit.
If this is not the case and an external
audio or visual alarm is required, this can
easily be done by connecting the orange
wire which is energized only when the
water level in the reservoir becomes
abnormally high.
In order to connect an external alarm, it
is necessary for the communication wire
to carry a stable AC voltage anywhere
between 12 and 230 volts.
If an external alarm is required, the orange
wire would be connected to one terminal
of the alarm device which must use the
same voltage as the communications wire,
which will have to be determined prior
to installation. If no external alarm is
required, the orange wire is not used and
the end is taped off to isolate it.
If the alarm device is powered by 12 to
115 volts, it will be necessary to connect
the other terminal of the alarm device
to a neutral to complete the circuit.
If the alarm device is powered by 230
volts, it will be necessary to determine
the polarity of the communication wire
(line 1 or line 2) and then to connect the
other terminal of the alarm device to the
other line (1 or 2) to complete the circuit.
SEE PAGE 3 FOR DETAILED DIAGRAMS OF SEQUENCE OF OPERATION

and PAGE 4 FOR PUMP SELECTION SPECIFICATIONS
Minipumps are not designed to run
dry as they are both cooled and
lubricated by the water flowing
through them. They therefore require
a float switch to detect the presence
of water in the drain pan and
activate the pump only when water
is present.
For this reason, a Minipump
always consists of 2 elements:
1. The pump body, which
includes an electronic PCB and
the pump motor.
2. The reservoir, which contains
the filter and the switching mechanism
to activate the pump. This must always
be kept level and clean to facilitate
operation of the float switch and
the filter must be cleaned regularly.
When these are supplied as 2 separate
items as in the Orange or Aqua series,
they are known as a SPLIT TYPE PUMP
and the 2 elements are connected
together with a length of 1/4” vinyl tube
and a communication cable, both of
which are usually around 6 feet long, but
may be extended if required.
When these 2 elements
are combined together
in 1 unit as in the Lime
series, they are known as
a MONOBLOC PUMP in which the
pump and reservoir share a common
body and no connecting tubes
or wires are
needed.
Mini & Maxi Orange
Pump Body
Reservoir
Reservoir
Reservoir
Pump Body
Pump Body
Mini Aqua
Mini & Maxi
Lime