Viessmann GC1 Installation, Start-Up And Service Instructions

4
5712 717 v1.0
Vitotronic 100, KW10B Installation, Start-up and Service
Table of Contents
Start-up
Troubleshooting
Additional Information
After Installation.......................................................21
Checklist.............................................................21
Service binder.....................................................21
Start-up Instructions..................................................21
Switches.................................................................22
Front panel switches............................................22
Dial switches.......................................................22
DIP switches.......................................................23
Boiler pump post purge.........................................23
Boiler pump continuous operation..........................23
Minimum boiler water temperature protection..........23
OpenTherm thermostat enable...............................23
Internal outdoor reset function...............................23
Auxiliary contact function(A1)...............................23
DHW priority.......................................................23
DHW pump post purge timer................................23
DHW pump post purge timer delay.........................23
DHW priority override timer (fixed at one hour)........23
DHW boiler temperature function...........................23
Minimum boiler water temperature protection..........23
Minimum boiler water temperature selection...........23
Pump Start-up Operation............................................25
Boiler pump sequence...........................................25
DHW pump sequence...........................................25
Alternate Control Function.........................................26
A1 Auxiliary input - heat demand...........................26
A1 Auxiliary input - 0-10VDC...............................26
Diagnostics..............................................................27
Failure, cause, correction......................................27
Test points..........................................................28
120V power flow................................................28
Dial switch..........................................................29
Front panel LEDs.................................................29
Temperature sensors..........................................29
Outdoor temperature sensor resistance chart...........29
Boiler and DHW temperature sensor resistance chart...29
Testing the FHL...................................................29
Flow chart...........................................................31
Replacement Components..........................................32
Fuse..................................................................32
Fixed high limit....................................................32
Adjustable high limit.............................................32
Parts List.................................................................33
Ordering replacement parts...................................33
Parts..................................................................33
Wiring Diagram.........................................................34
Technical Data.........................................................35
Protocol..................................................................35
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Viessmann GC1 Specifications

General

Brand	Viessmann
Model	GC1
Category	Control Unit
Language	English