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Worcester
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28i RSF
Worcester 28i RSF User Manual
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Table of Contents
Contents
2
Installation Regulations
2
Introduction
2
Facia Controls
3
Water Flow Diagram
3
Showes, Bidets, Taps and Mixing Valves
3
Safety
3
Technical Data
4
Flue Details
4
Maximum Available Pump Head
4
Mechanical Specifications
4
Performance Specifications
5
Domestic Hot Water Temperature Rise
5
Gas Supply System
5
Clearances
5
Siting the Appliance
6
Side Flue Opening
6
Appliance Pipework Connections
6
Siting the Flue
7
Air Supply
7
Sealed System
8
Open Vent System
8
Sealed Primary Water System
8
Domestic Hot Water
9
Gas Supply
9
Electrical
10
Wiring Diagram
10
Functional Flow Diagram
11
Mains Electricity Connections
12
230V Room Thermostat Connections
12
230V Programmer Connections
12
Installing the Appliance
13
Appliance Mounting Plate and Flue Position
13
Marking out the Side Flue Position
13
Install the Boiler
13
Appliance Casing and Control Equipment Fixings
14
Flue Turret Fixing and Automatic Air Vent
14
Standard Flue Assembly
14
Extension Duct
15
Flue Duct Length
15
Rear Flue
15
Flue Turret Fixing
16
Terminal Assembly for Internal Fitting of the Flue
16
Flue Bends
16
Elbow to Flue Turret Assembly
17
Vertical Adapter
17
Facia Connections Cover
17
Commissioning
18
Programmer Connection
18
Appliance Components and Fixings
18
Pressure Relief Valve
19
Gas Valve
19
Handover
20
User Controls
20
Domestic Hot Water and Central Heating
20
Inspection and Service
21
Pre-Service Inspection
21
Dismantle the Appliance
21
Measurement of the Flue Gases
21
Replacement of Parts
22
Burner and Electrode Assembly
22
Service of Components
22
Test the Appliance
22
Combustion Chamber
23
Spark & Flame Sense Electrode Assembly
23
Combustion Chamber Insulation
23
Burner
23
Central Heating Sensor
24
Circulating Pump
24
Expansion Vessel
24
Water Flow Turbine
24
Control Board
25
Gauze Filter
25
Flue Flow Sensor
26
Operational Flow Diagrams
27
Central Heating Mode
27
Automatic Start-Up Sequence
27
Domestic Hot Water Mode
28
"Autofrostat" Function
28
Pump Overrun Function
28
Over Run Function
28
Fault Finding
29
Preliminary Checks
29
Ignition Check
34
Air Pressure Switch Check
35
Modulating Valve Check
36
Flow Turbine Check
36
Component Parts List
37
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Worcester 28i RSF Specifications
General
Model
28i RSF
Output
28kW
Mounting
Wall-mounted
DHW Output
28kW
ERP Rating
A
Fuel Type
Natural Gas
Water Pressure
3 bar
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