Midea MHC-V7W/D2N1

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2.7

Table of Contents

Product View2
Wiring Diagram2
Table of Contents3
General Information3
Domestic Hot Water Tank3
Operation Range3
Introduction3
Domestic Water Heating Mode4
Accessories4
Safety Considerations4
Before Installation5
- Important Information Regarding Refrigerant Used6
- Selecting the Installation Site6
Precautions on Installation7
Installation Servicing Space8
Typical Application Examples9
- Circulation Pump Operation10
- Space Heating10
- Domestic Water Heating10
- Pump Operation and Space Heating and Cooling12
- Space Heating with an Auxiliary Boiler (Alternating Operation)13
- Operation15
- Application16
- Opening the Unit20
- Main Components20
- Hydraulic Compartment20
Overview of the Unit20
- PCB for Refrigerant System23
- Water Pipework28
- Checking the Water Circuit28
- Checking the Maximum Allowed Water Volume29
- Connecting the Water Circuit29
- Protecting the Water Circuit against Freezing30
- Ethylene Glycol30
- Propylene Glycol30
- Corrosion in the System Due to Glycol30
- Filling with Water31
- Field Wiring31
- Precautions on Electrical Wiring Work31
- Power Circuit and Cable Requirements34
- Field Wiring Guidelines34
- Connection of the Backup Heater Power Supply34
- Specifications of Standard Wiring Components34
- Connection for Other Components35
- Climate Related Curves38
- Temperature Curves for Heating Ode and ECO Heating Mode38
- Temperature Curves for Cooling Mode38
Start-Up and Configuration38
- High Temperature Curves for Heating Mode39
- Low Temperature Curves for Cooling Mode39
- Low Temperature Curves for Heating Mode39
- DIP Switch Settings Overview39
- Initial Start-Up at Low Outdoor Ambient Temperatures40
- Pre-Operation Checks40
- Powering up the Unit40
- Setting the Pump Speed40
- Field Settings41
- Pump LED Diagnosis and Solutions41
- Failure Diagnosis at the Moment of First Installation41
- Abour "For Serviceman"41
- Cool Mode Setting43
- Heat Mode Setting44
- Auto Mode Setting44
- Temp. Type Setting45
- Room Thermostat45
- Other Heating Source45
- Holiday Away Setting47
- Service Call47
- Restore Factory Settings47
- Test Run48
- Special Function49
- Floor Drying up50
- Preheating for Floor50
- Auto Restart50
Test Run and Final Check51
Maintenance and Service51
Troubleshooting51
- Parameters Check in the Unit53
- Error Codes54
Technical Specifications57
- Important Information for the Used Refrigerant96
- Frequency of Refrigerant Leak Checks96

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