© MHG Heating Ltd
MHG Heating Ltd, Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey, KT20 5LR
P:0845 6448802 F:0845 6448803 E:
W: www.mhgheating.co.uk
010617
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8.1 Hydraulic Design Cascade Units (HT Only)
(Additional Boiler circuit circulating pumps are required when using multiple HTP
units.)
Legend
AF
Outside Air Sensor (QAC34)
HK Heating Circuit Pump
BW
Hot Water Sensor(QAZ36) or VF Thermostat PM
System Pressure Manager
BW Hot Water Primary Pump
RU
Room Unit (QAA), BMS etc
FP
System Filling (Approved)
FS
Flow Sensor
RS
Return Sensor
Electrical Connections Cascade Units
If Direct On Boiler Weather Compensation is not required a 3000 Ohm Resistor must be applied to the AF terminals to remove the E10 Error Code from the RVS43 143
Cascade Manager LPB Network.
Addition control and hydraulic configurations are possible.