Ochsner AIR BASIC 109, Operating Manual/Installation Manual

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BA_AIR_BASIC_ELW_Multitower_OTE3_SW5x_CC_EN_V08.docx Page 42 of 92
T200 control box:
Terminal Description
X1
L1/L2/L3
Electr. booster heater 8.8 kW
N1/N2/N3
X2 L/N/PE OTE controller supply
X3
L1/PE/COMM
Connection to outdoor unit
N1/C1/C2
1/2
PSU signal contact
Figure 53: T200 indoor unit connection terminals
OTE pin Description
8 Heating circuit pump 2, with
mixer valve (HCP 2)
15/16 Heating circuit mixing valve (MVH)
41/42 Control elements (eBus)
43 Mixer sensor (TMK)
44 Outdoor temperature sensor (TA)
55 Default target value, building
management system (BMS)
4.2.7 T200 maintenance
CAUTION
Before any work is carried out, all
electrical connections to the appliance
must be isolated from the mains across
all poles.
Draining the buffer tank:
Figure 54: Draining the buffer tank
-
Drain the buffer tank via the drain valve.
Draining the DHW tank:
CAUTION Scalding
Hot water can escape when draining
the DHW tank.
-
Close the shut-off valve in the cold water
inlet pipe.
- Open the DHW valves on all draw-off
points.