Bosch Worcester GREENSTAR 21Ri ErP + User Manual

UK/IE
User instructions
Wall hung RSF gas fired condensing regular appliance
GREENSTAR Ri
ErP +
6720813340-00.1Wo
For central heating systems
6 720 821 669 (2018/06)
If you smell gas:
▶ Keep well away from the building: call the National Gas Emer-
gency
Service on 0800 111 999.
▶ L.P.G. appliances: Call the supplier’s number on the side of the
gas tank.
These appliances are for use with :
Natural Gas or L.P.G.
(Cat. II 2H 3P type C13, C33 & C53)
Model GC Number
Natural Gas 9Ri
ErP +
41-406-74
12Ri
ErP +
41-406-75
15Ri
ErP +
41-406-76
18Ri
ErP +
41-406-77
21Ri
ErP +
41-406-78
24Ri
ErP +
41-406-79
L.P.G. 9Ri
ErP +
41-406-68
12Ri
ErP +
41-406-69
15Ri
ErP +
41-406-70
18Ri
ErP +
41-406-71
21Ri
ErP +
41-406-72
24Ri
ErP +
41-406-73

Bosch Worcester GREENSTAR 21Ri ErP + Specifications

General

Brand	Bosch
Model	Worcester GREENSTAR 21Ri ErP +
Category	Boiler
Language	English

Summary

Key to Symbols and Safety Instructions

Safety Precautions

Details essential safety instructions for operating the appliance, including gas leak procedures and material handling.

General Information

Servicing

Guidance on regular servicing requirements and the importance of the service record for maintenance.

Maintaining Your Appliance

User Caution

Prepare for Operation

Sealed Heating Systems

Information on sealed heating systems, including checking and maintaining system pressure for safe operation.

Topping Up the System Pressure

Step-by-step guide on how to add water to the heating system to maintain correct pressure.

Controls

Operating the Appliance

Instructions on switching the appliance on/off and setting the central heating flow temperature.

Appliance Frost Protection

Clearances and Ventilation Information

Appliance Clearances

Malfunction or Failure

Basic Checks

Essential checks to perform before contacting an engineer for issues with heating or hot water supply.

Fault Finding

A guide to identifying common problems, their causes, and suggested remedies for appliance malfunctions.

Appliance Reset

Procedure for resetting the appliance in case of a fault, indicated by a flashing mains indicator light.

Extreme Cold Weather

Advice on preventing and dealing with frozen condensate pipes during extreme cold weather conditions.