60
20 CASCADE CONTROL
When using the integrated cascade control, a maximum of 16 heat pumps can be controlled in a cascade
configuration. When using the cascade control, the demand signal, temperature sensors, DHW three way valve and
any immersion heaters need to wired to back
to the ‘master’ heat pump.
The following setup example is for a 2 x S-ASX 30-50 cascade setup:
Drawing Number
Part Description
B9
Outside Air Temperature Sensor
B10
Common Flow Temperature Sensor
Q3
DHW Three Way Valve
Q4
DHW Secondary Circulation Pump
K6
DHW Immersion Heater
B3
DHW Tank Temperature Sensor
B4
Thermal Store / Buffer Vessel Flow Temperature Sensor
B41
Thermal Store / Buffer Vessel Return Temperature Sensor
20.1
Cascade Wiring
The cascade wiring needs to be completed by a qualified electrician.
20.1.1
C
ASCADING
S-ASX
30-50
H
EAT
P
UMPS
T
OGETHER
Using terminals MB & DB on the LPB clip in module, daisy chain them together as shown below.
If a third heat pump is to be added, daisy chain the same terminals from Slave 1 and so on.
Summary of Contents for S-ASX 30
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Page 24: ...24 10 CORRECTIVE FACTORS 10 1 Heating Performances ...
