Technical Data
Legend
TCP
Additional temperature control port ½”
AQW Aquastat well tapping ½”
BWR
Boiler water return
BWS
Boiler water supply
ACP
Additional control port ½” (pressure gage)
SEN 1 Return temperature sensor port
SEN 2 Boiler pump temperature sensor ½”
RWE
Return water elevation 1½”
SR
Safety return - connection to precharged
membrane expansion tank
SS
Safety supply - connection to pressure relief valve
Boiler return header
BWS
ACP
TCP
AQW
SS/RWE
BWS
SS/RWE
29½” / 750 mm
12¾” / 325 mm
21”
/
535
mm
Air vent
SR/RWE
BWR
SEN 1
SR/RWE
SEN 2
BWR
7½”
190 mm
20¼” / 515 mm
14¾
”
/
375
mm
29½
”
/
750
mm
5
3
/
16
”/
132
mm
VITOROND 200, VD2
7
Boiler Connection Kit (Standard Equipment)
consisting of boiler supply and return header
Boiler supply header
Low Temperature Protection
Boiler model
VD2-
125
160
195
230
270
30% Boiler Flow Package
Ø”
1¼
1½
1½
100% Boiler Flow Package
Ø”
2
2½
2½
3
3
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.
30% Boiler Flow Package:
H
1 Boiler pump, 2 ball valves,
1 flow check valve
100% Boiler Flow Package:
H
1 3-Way return water mixing valve,
1 actuator, 1 circulating pump
5285
661
v1
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