Midea MC-SU30-RN1L Owners & Installation Manual page 12

4.2 Connection drawing of pipeline system
Main unit
unit
unit
This is the water system of standard module, which pump is not provided.
Stop valve
Y-shaped filter
I&O manual
8
Differential pressure by-pass valve
Auxiliary electric heater
Symbol explanation
Pressure gauge Flexible joint
Thermometer Circulating pump
Fig. 4-1
Expansion tank
Water replenishing
Dirt discharge valve
Y-type filter,
requiring≥ 16 mesh
Drain valve
Gate valve Automatic discharge valve
Check valve
Terminal
Two-way valve
Three-way valve