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Design & installation Guide For McQuay MDS Multi System
J2 settings (1: ON: 0: OFF)
D1 D5 indicate the local address during intercommunication:
J2.6, ON: cooling only OFF: heat pump
J2.7, J2.8 reserved
JP1 and JP2 are used to set matched resistance for communication terminals. The last switch on the manifold
must be shorted, while other switches remain in open circuit.
J2.1 J2.2 J2.3 J2.4 J2.5 Address J2.1 J2.2 J2.3 J2.4 J2.5 Address
0 0 0 0 0 0 0 0 0 0 1 16
1 0 0 0 0 1 1 0 0 0 1 17
0 1 0 0 0 2 0 1 0 0 1 18
1 1 0 0 0 3 1 1 0 0 1 19
0 0 1 0 0 4 0 0 1 0 1 20
1 0 1 0 0 5 1 0 1 0 1 21
0 1 1 0 0 6 0 1 1 0 1 22
1 1 1 0 0 7 1 1 1 0 1 23
0 0 0 1 0 8 0 0 0 1 1 24
1 0 0 1 0 9 1 0 0 1 1 25
0 1 0 1 0 10 0 1 0 1 1 26
1 1 0 1 0 11 1 1 0 1 1 27
0 0 1 1 0 12 0 0 1 1 1 28
1 0 1 1 0 13 1 0 1 1 1 29
0 1 1 1 0 14 0 1 1 1 1 30
1 1 1 1 0 15 1 1 1 1 1 31
DIP switch setting
J1 settings (1:ON: 0:OFF)
J1.1 J1.2
Initial opening extent
J1.1 J1.2
Initial opening extent
of the expansion valve of the expansion valve
0 0 300 1 0 400
0 1 350 1 1 450
J1.3 reserved
J1.4: J1.5: J1.6: J1.7 capacity settings
Note: Other DIP switches are reserved.
No. J1.4 J1.5 J1.6 J1.7 Capacity
1 0 0 0 0 10.0kW/4HP
2 0 0 0 1 12.5kW/5HP
3 0 0 1 0 15.0kW/6HP
4 0 0 1 1 22.5kW/8HP
5 0 1 0 0 28.1kW/10HP
6 0 1 0 1 3HP