External Connection - Viessmann Vitotronic 300 Installation And Service Instructions Manual
Type gw5b, vitotronic 300, type gw5b weather-compensated, digital boiler control unit for boiler model cm2 - 400, 500, 620 and 620 tx
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Also See for Vitotronic 300:
- Installation and service instructions manual (164 pages) ,
- Operating instructions manual (73 pages) ,
- Technical data manual (8 pages)
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Installation Sequence
120V External Connection
**
**
Legend
A Pumps
B To the control unit
Rated current: 2A~
* Maximum output 6FLA shared between all
120V outputs.
** In conjunction with extension for heating circuits
2 and 3.
16
Vitotronic 300, GW5B Installation and Service
Pumps 120V
Available pump connections
sÖM1/A1 Heating circuit 1 pump
Heating circuit 2 pump
sÖM2
Heating circuit 3 pump
sÖM3
sA
DHW pump
sK
DHW recirculation pump
Boiler pump
sL
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