1
CONTENTS
INTRODUCTION
1
1-1
Introduction
..........................................................
2
1-1.1
How the OSO Dualstream System Works
.
2
1-1.2
System Contains
..................................................
2
1-1.3
System Features
..................................................
2
1-1.4
Central Heating System
....................................
3
1-1.5
Models Available
..................................................
3
OPERATOR CONTROLS
2
2-1
Hot Water Temp.
...............................................
4
2-1.1
Hot Water Control - Heating System
..........
4
2-1.2
Hot Water Control - Immersion Heater
......
4
2-2
Hot Water Overheating
...................................
6
2-2.1
Water Heated by Heating System
................
6
2-2.2
Water Heated by Immersion Heater
............
6
2-3
Shut Off Valves
...................................................
6
2-3.1
Stop Cock
................................................................
7
2-3.2
Double Check Valve
...........................................
7
2-3.3
Cold Water Shut Off Valve
...............................
7
2-3.4
Supply Water Shut Off Valve
..........................
7
2-3.5
Hot Water Shut Off Valve
.................................
7
2-4
Pressure Relief
...................................................
7
2-5
Servicing
................................................................
7
TECHNICAL INFORMATION
3
3-1
System Components
.......................................
8
3-2
Specifications
......................................................
8
3-2.1
Cylinder
....................................................................
8
3-2.2
Accumulator
..........................................................
8
3-2.3
Pipes
..........................................................................
8
3-2.4
Electrics
....................................................................
8
3-3
Wiring
.......................................................................
9
3-3.1
Immersion Heater
................................................
9
3-3.2
Wiring Layout S Plan
.........................................
10
3-3.3
Wiring Layout Y Plan
..........................................
11
INSTALLATION
4
4-1
Building Control
................................................
12
4-1.1
Regulations
............................................................
12
4-1.2
Electrical Regulations
........................................
12
4-2
Installation
............................................................
12
4-2.1
Positioning
..............................................................
12
4-2.2
Unvented Hot Water Cylinder
........................
12
4-2.3
Accumulator
...........................................................
13
4-2.4
Tundish
.....................................................................
13
4-2.5
Discharge Pipe
.....................................................
13
4-2.6
Scale Protection
...................................................
14
4-2.7
Pipework
..................................................................
14
4-2.8
OSO Dualstream Components
.....................
14
4-2.9
Connections to OSO Dualstream
.................
14
4-3.0
Direct Cylinders
....................................................
14
COMMISSIONING
5
5-1
Commissioning Checks
................................
15
5-1.1
Commissioning Procedure
..............................
15
5-2
Handing Over
......................................................
15
SERVICING
6
6-1
Routine Service
..................................................
16
6-1.1
Service Procedure
...............................................
16
SPARE PARTS
7
7-1
Spare Parts
...........................................................
17
SECONDARY RETURN
8
8-1
Secondary Return
.............................................
17
OSO DUALSTREAM
9
9-1
OSO Dualstream
................................................
18
CONNECTIONS
10
10-1 28mm Connections
..........................................
19
FAULT DIAGNOSIS
11
11-1 Fault Diagnosis
..................................................
19