Viessmann VITOCROSSAL 300 - Service Instructions For Contractors Manual

Viessmann VITOCROSSAL 300

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Service instructions

for contractors

VIESMANN

Vitocrossal 300

Type CU3A

Gas condensing boiler with MatriX gas burner and Lambda Pro Con-

trol,

Natural gas and LPG version

open and balanced flue operation

For applicability, see the last page

VITOCROSSAL 300

5692 860 GB 6/2010

Please keep safe.

Table of Contents

Default Chapter4
- Table of Contents4
- Steps - Commissioning, Inspection and Maintenance6
- Further Details Regarding the Individual Steps8
Setting the Time and Date (if Required)10
- Designating the Heating Circuits10
Checking the Gas Type10
Removing the Front Panel11
- Gas Type Conversion (Only for Operation with LPG)12
Function Sequence and Possible Faults12
Checking the Static and Supply Pressure14
- Setting the Maximum Output16
- Checking the Balanced Flue System Tightness (Annular Gap Check)17
- Removing the Burner and Checking the Burner Gasket18
- Checking Burner Gauze Assembly and Thermal Insulation Block19
- Checking and Adjusting the Ignition and Ionisation Electrodes21
- Separating the Neutralising System (if Installed) from the Boiler and Connecting the Drain Hose22
- Cleaning the Combustion Chamber and Heating Surfaces22
- Cleaning and Reconnecting the Condensate Drain System23
Checking that the Condensate Drain and Neutralising System (if Installed) Are Not Obstructed and that They Are Free from Leaks24
Checking Gaskets and Thermal Insulation Components on the Boiler25
Checking the Diaphragm Expansion Vessel and System Pressure26
Checking the Water Quality27
Checking the Mixer for Obstructions and Leaks27
26 Checking the Function of Safety Valves28
Fitting the Burner28
Checking Firm Seating of Electrical Connections 29. Checking All Gas Equipment for Tightness at Operating Pressure29
Checking the Combustion Quality29
32 Checking the External LPG Safety Valve (if Installed)30
Matching the Control Unit to the Heating System30
Adjusting the Heating Curves49
Connecting the Control Unit to the LON52
Scanning and Resetting the "Service" Display54
Fitting the Front Panel55
Instructing the System User55
- Calling up Coding Level 156
- General57
- Boiler58
- Dhw59
- Solar60
- Heating Circuit 1, Heating Circuit 2, Heating Circuit 361
- Calling up Coding Level 267
- General67
- Boiler75
- Dhw76
- Solar77
- Heating Circuit 1, Heating Circuit 2, Heating Circuit 384
Code 156
Code 267
Diagnosis and Service Scans91
- Calling up the Service Menu91
- Diagnosis91
- Checking Outputs (Actuator Test)93
Troubleshooting95
- Fault Display95
- Fault Codes96
- Repairs105
Function Description113
- Weather-Compensated Control Unit113
- Internal Extensions (Accessories)114
- External Extension (Accessory)116
- Control Functions118
- Allocating Heating Circuits to the Remote Control125
- Electronic Combustion Controller125
Designs127
- Internal Connection Diagram127
- External Connection Diagram130
Parts Lists132
Commissioning/Service Reports138
Specification143
Certificates144
- Declaration of Conformity144
- Manufacturer's Certificate According to the 1St Bimschv [Germany]144
Keyword Index145

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