982017-AIR-BASIC-Multitower-T201-EN01.docx
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T201 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 32:
T201 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)
4.1.7 T201 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 33:
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.
Summary of Contents for AIR BASIC 211 T201
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