Seresco CLASSIC NE-002, Operation And Maintenance Manual

Page: 28 / 37

K – R3 Module
OMM.K.S.SL.01
K ‐
3
February
2020

Fan (51) is located directly
downstream of return air connection
(52). Module discharge air damper
(53) should be connected according
to module fan option: to supply air
ductwork, if fan option is main
blower booster, or to exhaust
ductwork/outdoors, if fan option is
exhaust.
o
Depending on airflow
requirement and R3 Module
size, it could be equipped
with one or two fans,
serving same option.

Full flow pool water heater (54) is in
the compartment, separated from
the air flow side of the module
(under the dehumidifier compressor
compartment). The pool water
manifold is equipped with required
controls and safeties (55) ‐ pool
water flow switch and temperature
sensors (entering and leaving).
o
If the full flow pool water heater is installed, there is no regular pool water heater in the dehumidifier
compressor compartment.
o
Some R3 Module models, depending on the capacity required, may have two pool water heaters.

If the R3 Module is equipped with NO Outdoor Condenser Full AC option, evaporative condenser box with
coil (56) would be installed between discharge air damper and air filters (57), located downstream of the fan.
Condensate (collected in the dehumidifier drain pan under the evaporator coil) is pumped by condensate
pump (58) through the water filter into the nozzle manifold (59) to spray condenser coil with cool mist.
Dehumidifier with R3 Module ‐ Sequence of Operation.
In general, the dehumidifier’s operation is the same whether it’s equipped with the R3 Module or not ‐ refer to the
Sequence of Operation chapter for additional information.

Main Blower Parallel Booster Fan option. Same dehumidifier operation; booster fan is controlled and
operates in the same way as the dehumidifier main blower.

Minimum Exhaust Fan option. Same dehumidifier operation; minimum exhaust fan is controlled and operates
as external minimum exhaust fan (see Ventilation in Sequence of Operation chapter).

Full Flow Pool Water Heater option. Same dehumidifier operation; full flow pool water heat exchanger
replaces regular one, while control and operation of compressor circuit and pool heating feature stay the
same.

Full AC with NO Outdoor Condenser option. Same dehumidifier operation except for Air Conditioning and
Pool Heating – see Compressor Circuit operation description below (applicable to all R3 Module sizes).
o
Compressor heat rejection to outdoors occurs via exhaust airstream, without usage of outdoor
condenser or fluid cooler.
o
Note, that this option (Full AC with NO Outdoor Condenser) is available only in combination with Full
Flow Pool Water Heater and Minimum Exhaust Fan.
Pic. K.2