8.12 Separately Housed RVS43 Cascade Manager
Terminal Designation
Tag
Voltage
H1
<25V
B70
<25V
/B4
B3
<25V
M
<25V
B10
<25V
B9
<25V
MD
<25V
A6
<25V
MB
<25V
DB
<25V
Q3
230V
Q1
230V
F1
230V
L
230V
N
230V
MHG Heating Ltd Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey KT20 5LR
Telephone 08456 448802 Fax 08456 448803 Email
© MHG Heating Ltd
Description/Operation/Function
0-10 Volt Input via BMS/Volt Free Enable via Room Thermostat/BMS
Hot Water Sensor (QAZ36)/Volt Free Enable via Calorifier Thermostat/BMS
Ground Connection for all Sensors/Inputs
Outside Air Sensor
QAA75/78 Room Unit (BSB Ground)
QAA75/78 Room Unit (BSB Data)
(LPB Ground connected in parallel to boiler mounted OCI420 Clips)
(LPB Data connected in parallel to boiler mounted OCI420 Clips))
Hot Water Charging Pump/3 Way Valve Output
Power Input for Heating and Hot Water Pump Outputs
(M terminal used to create circuit)
System Return Sensor (QAD36)
(To be positioned on boiler side of system Low Loss Header)
(Parameter alteration required if Volt Free Enable Used)
System Flow Sensor (QAD36)
To be positioned on system side of system Low Loss Header)
(QAC34) or (3000Ω Substitute Resistor = -1
Boiler Communication
Boiler Communication
Heating Pump Output
(To be linked to Live Input)
Permanent Live
(Max 6 Amp)
Permanent Neutral
info@mhgheating.co.uk
010711
(
C)
(Mounted on North Facing Wall)
0
(Max 2 Amp)
(Max 2 Amp)
Web www.mhgheating.co.uk
32
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