Installation guide

-34-
Design & installation Guide For McQuay MDS Multi System
2.5 Network Central Control
One outdoor unit can be connected with maximum 48 indoor units.Control over up to 32
outdoor units can be realized by a centralized controller, and the monitoring software
monitors up to 1536 (32x48) units simultaneously in real time.The cabling of outdoor and
indoor units is simple.The MDS system features powerful fault display and query function
greatly saving the maintenance time and costs.
The real time monitor software of MDS is developed by McQuay and has huge performance.
It can monitor each unit in the system and set the parameter in accordance with the
requirement. It can also show the malfunction information, which can save the customer a lot
of time and money.
Outer coil
Four-way valve
high pres-
sure switch
PWM valve
Low pres-
sure valve
Discharge temperature 101.6ņ
Unit selection
Ambient temperature
Outdoor status
Output capacity
Communication status
normal
Unit nj
Run time
Suction temperature: 20.2ņ
Bottom temperature: 33.8ņ
DigitalStandard
99.7ņ
44.4ņ
44.1ņ
29.0ņ
29.5ņ
2
9
.4
ņ
1
1
.0
ņ
1
0
.0
ņ
1
2
.8
ņ
29.3
ņ
29.2
ņ
29.2
ņ
6.0P
30.0
ņ
2
5
.7
ņ
2
6
.4
ņ
2
7
.2
ņ
1
9
.0
ņ
2
1
.5
ņ
1
6
.7
ņ
2
6
.9
ņ
1
8
.7
ņ
2
5
.3
ņ
1
7
.2
ņ
1
9
.0
ņ
2
6
.3
ņ
2
6
.3
ņ
30.7ņ
28.4ņ
29.6ņ
16.8ņ
15.7ņ
17.2ņ
27.5ņ
19.7ņ
19.1ņ
19.5ņ
24.1ņ
28.5ņ
28.8ņ
nj
1
2
3
4
5
6
7
12
13
8
14
15
11
9
10
38.3ņ
6: 18: 30
Inlet
Mid-let
outlet
Return air
Inlet
Mid-let
outlet
Return air
Inlet
Mid-let
outlet
Return air
Inlet
Mid-let
outlet
Return air
Inlet
Mid-let
outlet
Return air
Inlet
Mid-let
outlet
Return air
Inlet
Mid-let
outlet
Return air
cooling