Midea MDVS-335W/DRN1 - V4+W VRF System Introduction; Features

R410A DC Inverter VRF V4 Plus W Series 50Hz MCAC-VTSM-2016-04
2 General Information
1. V4+W VRF system introduction
Midea water source heat pump central air-conditioning system is a kind of VRF air-conditioning system which
uses water as the cold/heat source. In this system, water is transported from the cold/heat source to the main
unit through the water pipe, after the heat exchange between water and the refrigerant, main unit will send the
refrigerant to indoor units.
2. Features
2.1 Wide application range
2.1.1 Free combination, maximum capacity can be up to 36HP
The capacity range of main units is from 8HP to 36HP. Maximum 59 indoor units with capacity up to 130% of
total main units can be connected in one system.
2.1.2 Wide operation range
Main unit water inlet flow: 8HP (2.7~8.1m
3
/h); 10HP (3~9 m
3
/h); 12HP (3.6~10.8 m
3
/h).
2.1.3 Long piping length
Piping length
Permitted
value (m)
Actual total piping length
300
Longest piping
Actual length
120
Equivalent length
150
Equivalent piping length from the farthest indoor
unit to the first indoor branch joint
40/90*
Level difference between
indoor and outdoor units
Main unit up
50
Main unit down
40
Level difference between indoor units
30
Main unit ambient temperature: 0~40
o
C
Main unit water inlet temperature: 7~45
o
C
Indoor temperature in cooling mode: 17~32
o
C
Indoor temperature in heating mode: 15~30
o
C
*The allowable length extend to 90m should under certain conditions.
Please refer to the installation manual for details.