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5285 428 - 03
Vitorond 200, VD2 Series 320 to 1080 Technical Data
Product Information
Technical Data
(continued)
Legend
TCP Additional temperature control port ½ in.
AQW Aquastat well tapping ½ in.
BWR Boiler water return
BWS Boiler water supply
ACP Additional control port ½ in. (pressure gage)
S
1
Return temperature sensor port
S
2
Boiler pump temperature sensor ½ in.
RWE Return water elevation 2½ in.
SR
Safety return - connection to precharged membrane
expansion
tank
SS
Safety supply - connection to pressure relief valve
Low temperature protection
Low temperature protection packages from Viessmann
are required for Rondomat boilers. A 30% Boiler Flow
Package is typically utilized in single-boiler installations.
100% Boiler Flow Packages are utilized in single- and
multiple-boiler installations.
Selection of the correct package depends on the
characteristics of the heating system, and the degree
of control necessary to protect the boiler. Contact
Viessmann for assistance.
Boiler Connection Kit (Standard Equipment)
consisting of boiler supply and return header
Boiler return header
Boiler supply header
