Filling With Water; Failure Diagnosis At The Moment Of First Installation; Refrigerant Circuit - mundoclima MUENR-H6 Series Installation & Owner's Manual

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1. Connect the water supply to the fill valve and open the valve.
2. Make sure the automatic air purge valve is open (at least 2 turns).
3. Fill with water until the manometer indicates a pressure of
approximately 2.0 bar. Remove air in the circuit as much as
possible using the air purge valves. Air present in the water circuit
might cause malfunctioning of the backup heater.
Do not fasten plastic cover
on the air purge valve at the
topside of the unit when the
system is running. Open air
purge valve, turn
anticlockwise at least 2 full
turns to release air from the
system.
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check for any of the following abnormalities before diagnosing
possible error codes.
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and between unit and user interface).
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10
HP
11
LP
12
1
1 Compressor
2 4-Way Valve
3 Accumulatior
4 Air Side Heat Exchanger
5 Electronic Expansion Valve
6 Storage Tank
7 Strainer
8 Water Side Heat Exchanger
(Plate Heat Exchange)
17

FAILURE DIAGNOSIS AT THE MOMENT OF FIRST INSTALLATION

15
8
16
2
3
9 Differential Pressure Switch
10 High Pressure Switch
11 Low Pressure Switch
12 Discharge Gas thermistor
13 thermistor For Outdoor Temperature
14 Thermistor For Evaporation In Heating
(Thermistor For Condenser In Cooling)
15 Thermistor For Plate Heat Exchange 1
16 Thermistor For Plate Heat Exchange 2
During filling, it might not be possible to remove all air in the
system. Remaining air will be removed through the automatic
air purge valves during the first operating hours of the system.
Topping up the water afterwards might be required.
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depending on the water temperature (higher pressure at
higher water temperature).
However, at all times water pressure should remain
above 0.3 bar to avoid air entering the circuit.
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pressure relief valve.
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a possibility that there is air in the system, or the water level in the
system is less than the required minimum.
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wiring between the user interface and unit.
20
19
17
9
18
6
7
13
4
14

FILLING WITH WATER

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is displayed on the user interface, check the

REFRIGERANT CIRCUIT

22
23
21
24
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5 7
Cooling
Heating
17 Thermistor For Water Outlet
18 Thermistor For Water Inlet
19 Automatic Discharge Valve
20 Expansion Tank
21 Circulating Pump
22 Pressure Gauge
23 Safety Valve
24 Auto-watet replenishing