Please file in Service Binder
5693 982 - 04 02/2015
VITOTRONIC
r
300
Vitotronic 300
Type GW2B
Weather-compensated, digital boiler control units
For use with Boiler models VD2A, VD2 and CT3
for use by heating contractor
Installation and Service
Instructions
Read and save these instructions
for future reference.
Product may not be exactly as shown
IMPORTANT
Certified as a component
part for Viessmann boilers