© MHG Heating Ltd
18
MHG Heating Ltd Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey KT20 5LR
Telephone 08456 448802 Fax 08456 448803 Email
info@mhgheating.co.uk
Web www.mhgheating.co.uk
140116
8.6Hydraulic Design Single Unit (Option 7)
Electrical Connections Single Unit (Option 7)
Max switching capability 0.5 Amps
Parameter #
Parameters Description
Default
Proposed
Change
6020
Function Extension module 1
Heating Circuit 2
Heating Circuit 1
Terminal
Description
Terminal
Description
N
Permanent Neutral
20
B9 Outside Air Sensor (QAC34)
E
Permanent Earth
21
B9 & B3 Sensor Ground
L
Permanent Live 5Amp
22
B3 DHW sensor / Volt Free Enable
12
QX1 Neutral Heating Circuit 1 Pump
26
BX21 Sensor Ground
13
QX1 Earth Heating Circuit 1 Pump
27
BX21 Flow Sensor Heating Circuit 2
14
*QX1 Live Heating Circuit 1 Pump
33
H5 Ground
15
*QX23 Live Circuit 2 Heating pump
34
H5 Room thermostat VF or 0-10V
16
QX23 Neutral Circuit 2 Heating pump
32
H4 HC2 Room Thermostat VF or 0-10V
17
QX23 Earth Circuit 2 Heating pump
33
H4 Ground
18
*QX22 Live HC2 3 Way Valve Close
35
CL+ QAA75/78 Room Unit (if used)
19
*QX21 Live HC2 3 Way Valve Open
36
CL- QAA75/78 Room Unit (if used)
37
G+ QAA75/78 Room Unit (if used)