Ochsner AIR BASIC 211 T201, Operating And Installation Manual

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982017-AIR-BASIC-Multitower-T201-EN01.docx Page 15 of 60
4 Indoor unit
4.1 T201 indoor unit
4.1.1 Appliance description
The buffer tank and the DHW tank with heat
exchanger are arranged on top of each other and
can be separated for handling.
The appliance is fitted with a plastic foam outer
casing and a removable front panel. The appliance
is connected hydraulically and electrically to the
heat pump. All hydraulic connections are at the
top.
Further system components are integrated
alongside the DHW tank and the buffer tank:
Heat pump manager, tank charging pump, high
efficiency circulation pump for one direct heating
circuit, multifunctional assembly with safety valve
and 3-way switching valve, emergency/booster
heater for mono energetic operation
Hydraulic schematic:
Figure 13: Hydraulic diagram
1 Discharge below fixed grate
2 Cold water supply
3 Shut-off valve
4 Line strainer
5 Pressure reducing valve
6 Balanced pressure; cold water outlet
7 Check valve
8 Safety assembly
9 Tundish
10 Metal discharge pipe (D2) from tundish, with
continuous fall
11 Equipotential bond
12 Drain valve
13 Cylinder
14 DHW outlet
15 T&P valve
16 Metal discharge pipe (D1) from T&P valve to
tundish
17 Expansion vessel
18 Expansion relief valve
CAUTION
The tundish should be installed away
from electrical devices.
NOTE
If secondary return circuits are used,
then an additional expansion vessel
may be required.
Date table
Minimum size of discharge
pipe D1 mm 15
Minimum size of discharge
pipe D2 from tundish mm 22 28 35
Maximum permissible
pressure drop, expressed as
a length of straight pipe (i.e.
no elbows or bends) mm 9 18 27
Pressure drop of each elbow
or bend mm 0.8 1.0 1.4
Connection dimensons
Safety assembly connection mm 22
Expansion valve end
connection mm 15
Expansion vessel
connection, male, BSP G 1 A
Tundish inlet connection mm 22
Tundish outlet connection G 1
4.1.1.1 DHW tank
The steel tank is fitted internally with a special
direct enamel and a sacrificial anode. The anode
with wear indicator protects the inside of the tank
against corrosion.
The heating water heated by the heat pump is
pumped through an internal indirect coil in the
DHW tank. The internal indirect coil transfers the
absorbed heat to the DHW. The integral heat
pump manager controls DHW heating to the
required temperature.
4.1.1.2 Buffer tank
The steel tank serves to hydraulically separate the
flow rates of the heat pump and the heating
circuit. The heating water heated by the heat
pump is transported to the buffer tank by the tank
charging pump. When there is a demand, the
heating water is supplied to the heating circuit by
the integral heating circuit circulation pump.
4.1.1.3 Heat pump manager (OTE)