M thermal Mono       
4    202005 
Midea M thermal Mono Engineering Data Book 
1 M thermal Mono System 
1.1 System Schematic 
Figure 1-1.1: System schematic   
M thermal Mono is an integrated  air-to-water space heating, space cooling and domestic hot water heat pump system. 
The outdoor heat pump system extracts heat from the outdoor air and transfers this heat through refrigerant piping to the 
plate heat exchanger in the hydronic system. The heated water in the hydronic system circulates to low temperature heat 
emitters (floor heating loops or low temperature radiators) to provide space heating, and to the domestic hot water tank 
to provide domestic hot water. The 4-way valve in the outdoor unit can reverse the refrigerant cycle so that the hydronic 
system can provide chilled water for cooling using fan coil units. 
 
 
 
M  thermal  Mono  is  an  integrated  air  to  water  heat  pump  system  which  is  one-stop  solution  for  space  heating,  space 
cooling and domestic hot water. The outdoor heat pump system extracts heat from the outdoor air and transfers this heat 
through refrigerant piping to the plate heat exchanger in the hydronic system. The heated water in the hydronic system 
circulates to low temperature heat emitters (floor heating loops or low temperature radiators) to provide space  heating, 
and to the domestic hot water tank to provide domestic hot water. The 4-way valve in the outdoor unit can reverse the 
refrigerant cycle so that the hydronic system can provide chilled water for cooling using fan coil units. 
   
The  heating  capacity  of  heat  pumps  decreases with ambient temperature  dropping.  M  thermal Mono can be equipped 
with a backup electric heater to provide additional heating capacity for use during extremely cold weather when the heat 
pump capacity is insufficient. The backup electric heater also serves as a backup in case of heat pump malfunction and for 
anti-freeze protection of the outside water piping in winter.  
 
   
M thermal Mono Outdoor Unit 
Distributor 
Collector