Technical data

© MHG Heating Ltd
30
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
8.10 RVA63 Zone Controller Wiring Terminals
Terminal Designation (Low Voltage Terminals)
Terminal Designation (230 Volt Terminals)
Tag Description/Operation/Function Tag Description/Operation/Function
MD
Zone 2 QAA70/50/10 Room Unit
(PPS Ground)
Y6 Zone 2 Mixing Valve Closing Output (Max 2 Amp)
A7
Zone 2 QAA70/50/10 Room Unit
(PPS Data)
Y5 Zone 2 Mixing Valve Opening Output (Max 2 Amp)
B12
Zone 2 Flow Sensor (QAD21/26)
(To be positioned on Zone side of 3 way mixing valve)
F3
Power Input for Zone 2 Valve Outputs
(To be linked to Live Input)
M Ground Connection for all Sensors/Inputs Q6 Zone 2 Pump Output (Max 2 Amp)
B8 Flue Gas Sensor (Not Used) Q2 Zone 1 Pump Output (Max 2 Amp)
B31/H2/B41
Volt Free Enable via Room
Thermostat/BMS
F6
Power Input for Zone Pumps Output
(To be linked to Live Input)
B1
Zone 1 Flow Sensor (QAD21/26)
(To be positioned on Zone side of 3 way mixing valve)
Y2 Zone 1 Mixing Valve Closing Output (Max 2 Amp)
H1
0-10 Volt Input via BMS/Volt Free Enable
via Room Thermostat/BMS
Y1 Zone 1 Mixing Valve Opening Output (Max 2 Amp)
B2 Boiler Sensor (Not Used) F2
Power Input for Zone 1 Valve Outputs
(To be linked to Live Input)
B3
Hot Water Sensor (QAZ21)/Volt Free
Enable via Calorifier Thermostat/BMS
(Parameter alteration required if Volt Free Enable Used)
Q3/Y3
Hot Water Charging Pump/3 Way Valve Output
(Max 2 Amp)
B9
Outside Air Sensor
(QAC31/32) or
(620Ω Substitute Resistor = -1
0
C)
(Mounted on North Facing Wall)
F1
Power Input for Hot Water Pump/Valve Output
(To be linked to Live Input)
MD
Zone 1 QAA70/50/10 Room Unit
(PPS Ground)
K5 Burner Enable Output Stage 2 (Not Used)
A6
Zone 1 QAA70/50/10 Room Unit
(PPS Data)
F5 Power Input Burner Enable Stage 2 (Not Used)
MB
Boiler Communication
(LPB Ground connected in parallel to boiler
mounted OCI420 Clip or RVA47 Manager)
K4 Burner Enable Stage 1 (Not Used)
DB
Boiler Communication
(LPB Data connected in parallel to boiler mounted
OCI420 Clip or RVA47 Manager)
F4 Power Input Burner Enable Stage 1 (Not Used)
L Permanent Live
(Max 6 Amp)
N Permanent Neutral