Ochsner TERRA 11, Operating And Installation Manual

Page: 26 / 92

INSTALLATION | Appliance installation
26 www.ochsner.com | 982001-TERRA-M2-M4-EN04.1
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Check the frost protection, pH value and reserve
alkalinity.
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Check that the mixing ratio is correct using a refrac-
tometer. These checks must be carried out with a
representative liquid quantity (e.g. 3x 1/4 l).
i
Information
As the heat transfer medium’s protection against
corrosion decreases over time, we recommend
carrying out a liquid analysis every two years.
10.3.3 Filling the brine circuit
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Fill the brine circuit via the drain and fill valve.
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Flush the brine circuit.
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Allow the brine to flow into the brine circuit.
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Vent the brine circuit.
11_02_200_204_01_020
1
1 Drain and fill valve with hose screw connector (spe -
cial thread M21x1.5)
i Information
The drain and fill valve has a special thread
(M21x1.5) for the hose screw connection.
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Take care of the hose screw connector provid-
ed and keep it close to the heat pump.
11_02_200_202_01_028
1
2
4
3
1 Drain and fill valve
2 Locking ring for closing and opening the drain and fill
valve
3 Hose screw connector (special thread M21x1.5)
4 Cover
Material damage
Operating the heat pump with too little or no heat
transfer medium (brine) will damage the appliance.
10.3.4 Safety valve drain
i
Information
The indoor unit has an internal safety valve for the
heat source system (brine).
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Observe national and regional regulations re-
garding the design of the drain and prescribed
regular operational tests.
i Information
The maximum operating pressure of the heat
transfer medium is 3 bar. However, due to closing
pressure differences, the safety valve may begin
to open from a pressure of 2.4 bar.
If the valve is triggered, the liquid exits via a hose on the
rear of the indoor unit.
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Size the safety valve drain so that the liquid can drain
unobstructed into a brine collection container.
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Install the hose with a consistent fall to the brine col-
lection container. Avoid kinking the hose.
11_02_200_204_01_009
Material damage
The liquid (brine) drained via the right-hand safety
valve must not end up in the domestic drain!
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Collect the liquid in a brine collection contain-
er.