© MHG Heating Ltd
MHG Heating Ltd, Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey, KT20 5LR
011011 2
Contents.
Section Page #
1.0 Appliance Type 3
1.1 Single Unit 3
1.2 Cascade Manager 4
1.3 Cascade Slave 5
1.4 System Separation Plate Unit 6
2.0 Installation Regulations and Requirements 7
2.1 Appliance Warranties 7
3.0 Dimensions 8
3.1 Plate Heat Exchanger Hydraulic Resistance 9
3.2 Installation Clearances 9
4.0 Delivery and Mobility 9
4.1 Case Removal 10
5.0 Technical Data 12
6.0 Pressure Relief Valve 13
7.0 Electrical Connections 13
8.0 Hydraulic Design Single Unit 14
8.1 Control Wiring Single Unit 14
8.2 Hydraulic Design Cascade Units 15
8.3 Control Wiring Cascade Units 15
9.0 Fluing Options 16
9.1 Single Unit Conventional Flue 16
9.2 Single Unit Balanced Flue 16
9.3 Cascade Conventional Flue 17
9.4 Cascade Balanced Flue 18
10.0 Filling The System 19
10.1 Expansion Vessel 19
11.0 System Water Quality 20
11.1 Care With The Use Of Solder Flux 20
12.0 Appliance Controls 21
12.1 Control Panel 21
12.2 RVS43 143 Cascade Manager 21
12.3 Module Controller 22
12.4 Module Controller End User Settings 22
12.5 Accessing Module Parameters 23
12.6 Module Operating Codes 25
13.0 Appliance Error Codes 24
14.0 Control Parameter Defaults 27
14.1 RVS43 143 Cascade Manager 27
14.1.1 RVS43 143 Cascade Manager Defaults 33
14.2 Module LMU64 Controller (QAA73 Unit Required.) 63
15.0 Commissioning 67
15.1 Pre-Commissioning Checks. 67
15.2 Combustion System Commissioning 67
15.3 NG/LPG – LPG/NG Conversion Procedure 68
16.0 Routine Inspection and Servicing 70
16.1 Routine Service Inspection 70
16.2 Routine Cleaning and Maintenance 70
16.3 QAA73 Room Unit/Service Tool 72
17.0 Optional System Controls (RVA 63, RVA46, QAA70, QAA50, QAA10) 74
18.0 Internal Wiring 75
18.1 Module Control Indication (OCI420 Communication Clip LED) 75
18.1.1 Module BMS Fault Indication Clip Installation and Setting (AGU2.511 Clip) 76
18.2 Internal Wiring Diagram 77
19.0 Flue Components 78
20.0 Exploded Diagrams 79
21.0 Spares Listings 83
22.0 HTP Exploded Diagram 87
23.0 Installer / End Users Note 88
