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External Water Tank Feature:
This unit is equipped with a secondary “External
Water Tank” which sits on a support tray and easily
attaches to the rear side of the unit by means of a
quick connect fitting. The male quick connect is
attached to the water tank, the female quick connect
is attached to the back of the main unit. We
recommend the external water tank be connected to
the main unit at all times during both air conditioning
and dehumidifying modes. These water tanks allow
for the storage of excess accumulated condensed
water produced during cooling/dehumidifying
operation.
It is possible to operate the unit utilizing the
“Internal” (primary) water tank only. (However,
running time/operation maybe reduced during
high humidity conditions) If the external water
tank is not connected to the main unit, (excess)
condensed water is automatically directed into
the internal water tank. When the external water
tank is utilized, (excess) condensed water is
directed first into the external tank. When the
external tank is full the water will then backflow
into the internal tank.
Cooling Operation:
During air conditioning mode condensed water
accumulates in a pre-cooler drip tray located
underneath the evaporator (cooling) coil. When the
water level reaches a predetermined level, the water
flow is directed into a small (well) holding tank
located at the bottom of the unit. When the water
level in the well reaches a pre-determined level, a
water pump is automatically activated that pumps
the water upto the condenser coil and is
subsequently cascaded across the fins of the
condenser coil.
This showering action is very efficient in terms of;
1) Keeping the condenser coil cool during operation.
2) Provides maximum cooling ef
ficiency
.
As the water cascades across the heated fins of the
condenser coil, it is evaporated.
This process
minimizes accumulated water from being stored in
both holding tanks, which results in longer running
times and less frequent emptying of the water tanks.
This process is continuous during air conditioning
mode only
.
NOTE: During high humidity conditions,
if the rate of water being condensed exceeds the
rate of water being evaporated, a solenoid valve
automatically opens allowing for excess water to be
directed into the holding tanks.
When the water level in the well returns to normal,
the solenoid valve automatically closes and the
water is again directed into well and the water pump
continues normal operation. When the water level
inside the external tank reaches it’s maximum level,
the water will then backflow into the (primary)
internal water tank. The water level inside the
internal tank (only) is monitored/controlled by a float
switch mechanism (safety shut-off) self-activated
when the water level reaches a predetermined level,
causing the unit to stop/cease operation
automatically and the tanks will have to be emptied.
The fan motor will continue to operate. (this is
normal)
NOTE: The float switch mechanism (safety shut-
off) is activated/controlled by the water level
inside the (primary) internal water tank only.
NOTE:
• The quick connect fittings supplied with both
the main unit and external water tank are "self
sealing" connections.
• This means as soon as the quick connects
are "disconnected", water flow between the
main unit and external water tank
stops immediately.
External Water Tank Instructions:
1. Attach the water tank support tray (with
castors) to the saddle bracket located at the
rear (lower section) of the unit, using the
screws provided. See Fig. 35
Fig.35