Klimor EVO-S COMPACT, Operation And Maintenance Manual

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EVO-S COMPACT
COMPACT AIR HANDLING UNIT
OPERATION AND MAINTENANCE MANUAL
4.7 RR rotary exchanger
In RR sets, heat recovery takes place in a rotary regenera-
tor, with a recovery efficiency of up to 85%. Outlet warm air
flows through the rotor section and heats it up. The rotor
transfers heat from the heated part to the cold air in the in-
take part. For summer conditions it is also possible to recov-
er cold and humidity.
Rotary exchangers can be used in cases where a slight mix-
ing of the exhaust and supply air is possible. The internal
tightness is defined above 97% when the rotor is installed
on the suction side of the fans.
The rotor kit includes a rotary exchanger and a drive mecha-
nism. A sluice is mounted on the rotor’s supporting construc-
tion, which prevents excessive leakage of the exhaust air.
The section housing has an inspection cover allowing ac-
cess to the drive mechanism and the rotor.
The drive mechanism consists of a belt transmission, an
electric motor (OJ-MRHX) and an engine base that automat-
ically regulates the drive belt tension.
The motor is supplied with the OJ-DRHX controller and both
units are connected by a factory-supplied cable.
OJ-DRHX is equipped with advanced software to monitor
the rotation of the rotary exchanger; no additional control
is required for breaking the drive belt (induction sensor or
other solution).
The combination of high-torque stepper motor and Field
Oriented Controls (FOC) technology provides an excep-
tionally innovative solution and increased efficiency. The
automation uses a feedback signal from the engine to make
sure that the engine selects exactly the required amount of
current to achieve the required speed and torque.
The rotor is made up of layers of aluminium foil winded on
the axis of rotation, alternately smooth and corrugated,
forming channels for airflow. To recover the latent heat re-
sulting from the humidity difference, the foil is additionally
covered with a layer of hygroscopic material.
The exchanger should be equipped with an anti-frost sys-
tem, which will protect the device against the effects of ex-
cessive cooling of the exhaust part of the exchanger.
The protection consists of (on delivery of the manufactu-
rer’s automation):
• differential pressure sensor (pressure switch) before
and behind the exchanger on the exhaust air side,
When the preset pressure drop on the pressure switch is re-
ached, as a result of the exchanger defrosting, the controller
sends a signal to the inverter to smoothly reduce the rotor
speed.
NOTE: The rotary exchanger is supplied without a frost
protection system as standard. The type of system is deter-
mined by the ventilation and automation system designer.
A pressure system is recommended. The pressure switch
setting should be 150% of the designed air pressure drop on
the exchanger on the outlet side.
The value of pressure drop is given in the technical data of
the air handling unit.
4.7.1 Rotary exchanger drive
Tab. No 17
Technical data for OJ-DRHX regulators
Unit
DRHX-1055-
MNN5 DRHX-1220-
MNN5 DRHX-1690-
MAN5
Efficiency Nm 2.0 4.0 / 8.0 14.0
Power data W 55 220 690
Voltage % >90% >94%
Power data
Voltage VAC 1 x 230 V AC 50/60 Hz -10%/+10%
Current (at max load) A 0,6 1,2 / 2,4 4,4
Power (at max. load) 0,69
> 99 (Active
PFC)
Output data
Nominal engine power (shaft) W 55 110 / 220 690
Rotary speed rpm 0-250 0-400
Nominal torque Nm 2.0 4.0 / 8.0 14.0
Increased torque Nm 2.5 5.0 / 10.0 17.5
Frequency Hz 0-120
Maximum output voltage Vrms 3 x 0-150V AC 3 x 0-230VAC
Maximum output current Arms 2.5 3.5 4.5
Protection
Maximum fuse value A 10
Engine output Interphase short-circuit protection
Engine Protection by limiting current
Surge protection No Yes, 400V (PTC)
Overload protection
Protection against current and temperature
overload
EMC Built-in EMC filter
Environment
Operating temperature O C -40 O C / +40 O C
Storage temperature
O
C -40
O
C / +70
O
C
Dimensions mm 183 x 143 x 55 185x220x90
Protection IP 54
Workmanship material Plastic Metal
Weight kg 0,9 2.0
Humidity % rh 10-95% rh, no condensation
Interface
Modbus protocol
MODBUS RTU RS485
(Baud rate: 9.6, 19.2, 38.4, 57.6, 115.2 Kbaud)
Default: 38.4k baud, 1 stop bit, none parity
Modbus connection 2 x RJ12 i 3 spring clams
Modbus wire Maximum 100m
Tab. No 18 Technical data for OJ-DRHX motors
MRHX-3P02N-03C5 Unit Wartość
Torque Nm 2.0
Power W 55
Weight kg ≈ 2.4 kg
Protection IP 54
Operating temperature O C -40 O C / +40 O C
Storage temperature
O
C -40
O
C / +70
O
C
Dimensions mm 85 x 85 x 67
Shaft dimension mm 12
Cable length m 0,3