Heat pumps in the cascade
M
S1
S2
Master
S0/G1
Line
6600 = 1
Slave
S0/G2
Line
6600 = 2
Slave
S0/G3
Line
6600 = 3
Master controller’s sensors, actuators, and
functions
S1 = Slave S0/G2
S2 = Slave S0/G3
6.2 LPB bus configuration
The system’s controllers are connected to an LPB bus (DB+/MB–). Any remote access
devices will also be connected to the same bus.
● Use twisted pair cables with a minimum wire cross-sectional area of 0.75 mm
2
.
Over long distances, use 1.5 mm
2
wires.
● Do not arrange the bus as a closed loop.
The permitted topologies are presented below.
Cascade bus topology ver. 1
The minimum voltage between the bus’s DB+ and MB– connectors is 9.5 V DC.
● If the voltage is smaller, the electrical resistance in the bus cables is too great.
M8009 2147EN
37 (74)
Summary of Contents for RE 28 05
Page 1: ...M8009 2147EN 25 October 2021 Installation and operation manual RE 28 48 RE 56 96...
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Page 45: ...RE 04 dimensions single unit configuration Two units M8009 2147EN 43 74...
Page 46: ...RE 04 dimensions two unit configuration 44 74 M8009 2147EN...
Page 61: ...7 4 EN 14285 Technical data sheets RE 28 RE 28 Technical data sheet ver 1 M8009 2147EN 59 74...
Page 62: ...RE 33 RE 33 Technical data sheet ver 1 60 74 M8009 2147EN...
Page 63: ...RE 38 RE 38 Technical data sheet ver 1 M8009 2147EN 61 74...
Page 64: ...RE 42 RE 42 Technical data sheet ver 1 62 74 M8009 2147EN...
Page 71: ...Wilo Stratos 40 1 12 Wilo Yonos MAXO 40 0 5 16 M8009 2147EN 69 74...
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