Baxi Potterton
G.C.No 47 393 22, G.C.No 47 393 23, G.C.No 47 393 21
manual
Install
Parts list
Error codes
Illustrated Wiring Diagram
Error 133 flashing
Check wiring Viewing Window
Dimension
Flue Accessories
PCB X3 connector terminals 3
Each fitting to aid assembly
Page 56
19.0
Notes
56
© Baxi Heating UK Ltd 2011
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Contents
Installation & Service Instructions
0086
Installer Notification Guidelines
Scheme Members only
Codes of Practice refer to the most recent version
Important Installation, Commissioning, Service & Repair
Legislation
Safe Manual Handling
General
Preparation
Technique
Contents
Description
Contents of Pack
Introduction
General Layout
Layout
Pump Protection
Frost Protection Mode
Appliance Operation
Technical Data
Promax Combi 24, 28
Dimensions and Fixings
Orientation
Tap Rail
32.5 mm Condensate Drain 65 mm
System Details
Information
Central Heating Circuit
Bypass
Pressure Relief Valve Fig
System Filling and Pressurising Fig
Expansion Vessel Central Heating only
Hard Water Areas
Domestic Hot Water Circuit Fig
Showers
At Least 1.5 7.2 Clearances Figs
Site Requirements
Location
Site Requirement
Ventilation of Compartments
Gas Supply
Electrical Supply
Condensate Drain
Flue
Flue terminal guard
Each fitting to aid assembly
Flue Options
Horizontal Flue Systems
Horizontal Flues
Vertical Flues
Twin & Vertical Flue Systems
120mm Min
Apart
Telescopic Internal Flue Kit
Flue Accessories
Key Accessory Size Code No
Air Duct Connection Flue Duct Connection Boiler Adaptor
Twin Flue Duct Adaptor
Twin Flue Connection
Flue Dimensions
For Roof Terminals
Flue Trim
Terminal Guard Fig
Metres Ring Adaptor
Plume Displacement
Plume Displacement Kit Fig
28/33
Determining Permissible Lengths
Example
5121368
General Fitting Notes
30mm
Elbow to allow the flue to be installed as shown
60Ø extension piece. It must be secured using two
Using a suitable bit e.g mm, drill through
Extension and outlet. Secure using two of the screws
Installation
Unpacking & Initial Preparation
Flushing
After considering the site requirements
Fitting The Boiler
Fitting the Pressure Relief Discharge Pipe Fig
Condensate Drain see section
Tighten all the connections
Fitting The Flue
Wall Thickness Waste
Flue Elbow
Ensure Elbow is fully Engaged into Boiler
Ensure Extension is fully engaged into Boiler Adaptor
Inner Flue Support Bracket
25mm Extension Cut End
Terminal Block Cover Cable Clamp
Making The Electrical Connections
Preliminary Electrical Checks
Commissioning
Commissioning the Boiler
Pressure
Case Front Panel Facia Panel
Completion
Completion
Servicing
13 .1 Annual Servicing
Annual Servicing Inspection
Case Front Panel Facia Panel Securing Screws
Viewing Window
10 ±1
Burner Sensing Electrode
Spark and Sensing Electrodes Fig
Changing Components
Igniter Fig
Fan Fig
Venturi Fig
Injector Fig
Gasket Venturi Injector Cover Gas Inlet Pipe Fan Collector
Burner Gasket Extension Piece
Burner Fig
Insulation Fig
Central Heating Temperature Sensor NTC Fig
Safety Thermostat Fig
DHW Temperature Sensor NTC Fig
Flue/Heat Exchanger Thermostat Sensor Fig
Automatic Air Vent Fig
Pump Head Only Fig
Pump Complete Fig
Pressure Gauge Figs
Hall Effect Sensor Fig
Diverter Valve Motor Unit & Assembly Fig
Plate Heat Exchanger Fig
Selector Switch Fig
14.22 P.C.B. Fig
Expansion Vessel Fig
Throttle Adjustment Screw
Gas Valve Fig
Setting the Gas Valve
Setting the Gas Valve CO2 check
Flue Adaptor Test Point Plug Analyser Probe
Throttle
Illustrated Wiring Diagram
Electrical
Short Parts List
Short Parts List
306
302
Error Codes
Fault Finding
Initial Fault Finding Checks
Error 133 flashing
Go to section ‘A’ Turn the selector switch to
Reset position for 5 seconds
Pump runs
Turn selector switch to
Error 133 flashing Go to section ‘I’
Turn Domestic Hot Water
Open DHW tap fully
PCB X3 connector terminals 3
Switch terminal
Fan jammed or faulty winding Replace PCB
Replace water
Check wiring Viewing Window
Replace sensor or PCB E28
Gas at burner
Replace gas valve
Replace sensor
Replace safety thermostat
Replace PCB Is there 230V at
Page
Page
Condensing Boilers only
Service Record
Brooks House, Coventry Road, Warwick. CV34 4LL
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