Technical data

© MHG Heating Ltd
19
MHG Heating Ltd Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey KT20 5LR
Telephone [phone] Fax [phone] Email [e-mail]
Web www.mhgheating.co.uk
010109
Enhanced electrical connection for ProCon HM (Units supplied with an integral Cascade manager)
Legend
High Voltage Output Terminals 230 Volts
BW
N Neutral Terminal for Hot Water Charging Pump
E Earth Terminal for Hot Water Charging Pump
L 230 Volt Output For Hot Water Charging Pump (Max 1Amp)
HK/ZB
N Neutral Terminal for Heating Circuit Pump
E Earth Terminal for heating Circuit Pump
L 230 Volt Output For Heating Circuit Pump (Max 1Amp)
Low Voltage Control terminals < 25 Volts
H1
M H1 Ground Terminal
H1 Controller Operating Input (Volt free Enable/0-10 Volt Control/Mode Alteration)
RL
M
System Return Sensor (QAD 21) Terminal Not Polarity Sensitive < 25 Volts
B70/B4
VL
M
System Flow Sensor (QAD 21) Terminal Not Polarity Sensitive < 25 Volts
B10
BW
M
Hot Water Sensor (QAZ36) or Hot Water Volt Free Enable (Thermostat/BMS).
Not Polarity Sensitive < 24Volts
B3
AF
M
Outside Air Sensor (QAC32) Not Polarity Sensitive < 24Volts
(Required to Activate Direct On Boiler Weather Compensation)
B9
RU
MD
Cascade Controller Output to Slave Boilers. Polarity Sensitive (Screened Cable Required)
(X41 Terminal 2 (Right) OCI420 Communication Clip)
A6
Cascade Controller Output to Slave Boilers. Polarity Sensitive (Screened Cable Required)
(X41 Terminal 1 (Left) OCI420 Communication Clip)