Wolf CGW-20/120 User Manual

Art.-Nr. 3044826_201403 Änderungen vorbehalten
Wolf GmbH · Postfach 1380 · 84048 Mainburg · Tel. 08751/74-0 · Fax 08751/741600 · Internet: www.wolf-heiztechnik.de
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Wartungsanleitung
Gasbrennwertgeräte
CGB-(K)-11/20/24, CGS-20/160, CGS-24/200,
CGW-11/100 CGW-20/120, CGW-24/140,
CGI-20/120, TGC-20/24, TGS-20/160
Seite 2 -18
Manual de mantenimiento
Caldera de condensacion a gas
CGB-(K)-11/20/24, CGS-20/160, CGS-24/200,
CGW-11/100 CGW-20/120, CGW-24/140,
CGI-20/120, TGC-20/24, TGS-20/160
Página 19 - 36
Service Manual
Gas condensing boilers
CGB-(K)-11/20/24, CGS-20/160, CGS-24/200,
CGW-11/100 CGW-20/120, CGW-24/140,
CGI-20/120, TGC-20/24, TGS-20/160
Page 37 - 54

Wolf CGW-20/120 Specifications

General

Energy efficiency class	A
Heating capacity	20 kW
Type	Condensing boiler
Efficiency	98%
Fuel type	Natural gas

Summary

General Safety Information

Safety Symbols and Warnings

Explains safety symbols and provides warnings for electrical, hot, and gas hazards.

Maintenance Contractor Recommendation

Recommends maintenance by qualified contractors and use of original spare parts.

Assembly

System Checks

Checking the Siphon

Procedure for checking, cleaning, and refilling the siphon for proper function.

Cold Water Strainer Cleaning

Steps to shut off water supply and clean the cold water strainer.

Sacrificial Anode Check

Access Trap Cover Removal (CGW)

Adjustments and Testing

Completing Adjustments and Test Run

Instructions for finishing adjustments, performing test runs, and checking emissions.

Gas Mixture Adjustment

CO₂ Adjustment at Upper Load

Procedure for adjusting CO₂ levels at upper load during emissions testing.

CO₂ Adjustment Procedures

CO₂ Adjustment at Lower Load

Procedure for adjusting CO₂ levels at lower load during soft start.

Checking CO₂ Adjustment

Process for verifying CO₂ values with the boiler closed and observing CO emissions.

Control Accessories and Service Kit

Checking Control Accessories

Guidance on checking control accessories and ensuring BUS connection display.

Recommended Service Kit Parts

Lists recommended parts for a service kit, including part numbers.

List of Required Parts

Overview of Worksteps