28
A
B
B
B
B
KWR/DVR/
KWRI/DVRI*
WWR/EHR
R1
T
p
M2*
M1*
p
V2
T
R4
+
-
M
M
V1
R3
T
WRG
M5
T
F
F7
B
R2
T
M3
EHM
English
Tel. +49 7930 9211-0 Fax +49 7930 9211-150
P 22 Heating
The air handling unit is operated in WRG mode and with a warm water heat register or external
electric heat register*.
3-point control and 0 - 10 V
P 22 Cooling
The air handling unit is operated in WRG mode.
3-point control or 0-10V
P 22 Heating and cooling (direct expansion)
Only with option Warm water heating coil or Electric heater* and op
-
tion cooling coil.
Heating: 3-point control or 0-10V
Cooling: potential-free contact ON / OFF and linear output 0-10V,
3-point control or 0-10V
P 22 Heating and cooling
Only with option Warm water heating coil or Electric heater* and
option cooling coil.
Heating: 3-point control or 0-10V
Cooling: potential-free contact ON / OFF and linear output 0-10V,
3-point control or 0-10V
P 21 Room, supply or extract air temperature regulation
The room, supply air or extract air temperature regulator compares the air temperature measured
at the temperature sensors with the reference temperature set on the control unit
In the case of he-
ating, a difference between the set-point and actual temperature causes the controller to increase
or reduce the heat output.
P 21 Room temperature control
With room temperature control, any external heat source in the room will be taken into account and
compensated for by a correction to the supply air temperature. The room temperature sensor is in
the control unit.
P 21 Supply air temperature control
With supply air temperature control, the external heat source is not taken into ac
-
count.
Fixed supply air temperature. No other adjustability.
P 21 Extract air temperature control
With extract air regulation, any external heat source in the room will be taken into
account and compensated for by a correction to the supply air. Fixed extract air tem
-
perature.
No other adjustability.
The following parameters for all 3 control modes:
* The electric heaters are con-
trolled by the internal bus.
Functional
descriptions see
also Table under
7.2. Description of
external inputs and
outputs
Fig. 15:
Connection diagram
P22
HEATING
P21
ROOMTEMP.CONTROL
P21
SUP.AIR TEMP.CON
P21
ETA TEMP.CTRL
B
P22
COOLING
P22
HEATING-COOLING
P22 DX COIL
HEATING-COOLING
M1 - M2*
V1 - V2
M5 - F7
WRG
M3
WWR
EHR
EHM
KWR*/KWRI*
DVR*/DVRI*
M
*
SUPPLY
AIR
EXTRACT
AIR
FRESH AIR
EXHAUST AIR
Control
Flap system drive
EC-fan
Air filter (Class M5/F7)
Heat exchanger
Bypass Actuators Damper system
Warm water heating coil (Version …W)
Electric heating element (Version …E)
Electric heater (Version 1600, 2400 …E)
Cold water cooling coil
Direct evaporator
3-way valve with actuator
Temperature sensor
Remote control with room temperature sensor
Fire detector
*Optinal depending on the type.
T
T
F
B
Summary of Contents for ETA K 1200 V W
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