© MHG Heating Ltd
30
MHG Heating Ltd Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey KT20 5LR
Telephone 08456 448802 Fax 08456 448803 Email
Web www.mhgheating.co.uk
010711
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
(620
Ω
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 RVS43 Manager)
K4
Burner Enable Stage 1 (Not Used)
DB
Boiler Communication
(LPB Data connected in parallel to boiler mounted
OCI420 Clip or RVS43 Manager)
F4
Power Input Burner Enable Stage 1 (Not Used)
L
Permanent Live
(Max 6 Amp)
N
Permanent Neutral