Viessmann Vitodens 200-W B2HE, Technical Manual

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DHW cylinder selection tables
DHW cylinders with "-W" in the product name are supplied with a
white finish. Appliances with "-B" or "-V" in the product name are
supplied in Vitosilver (marked in grey in the table).
Vitodens 200-W gas system boilers, cylinder allocation
Practical cylinder allocation (cylinder capacity in litres)
Rated heating output range [kW] up to 19.0 25.0 32.0
Vitocell 100-W (type CUGA, CUGA-A) below the boiler 120
150 120
150 120
150
Vitocell 100-W (type CVA, CVAA, CVAA-A) adjacent to
the boiler 160
200
300 160
200
300 160
200
300
Vitocell 100-V (type CVA) adjacent to the boiler — — 500
Vitocell 200-W (type EVIA-A) adjacent to the boiler 160
200 160
200 160
200
Vitocell 300-V (type EVIA-A) adjacent to the boiler — 300
500 300
500
Vitocell 100-W (type CVB, CVBB) adjacent to the boil-
er, dual mode 300
400 300
400 300
400
Vitocell 100-W (type CVUB) adjacent to the boiler, dual
mode 300 300 300
Vitocell 100-W (type CVUC-A) adjacent to the boiler,
dual mode (for Vitodens 200-W only) 300 300 300
Vitocell 100-B (type CVB) adjacent to the boiler, dual
mode — 500 500
Vitocell 300-B (type EVBA-A) adjacent to the boiler,
dual mode 300 300
500 300
500
Vitocell 340-M (type SVKC) heating water buffer cylin-
der with DHW heating 708/30 708/30 708/30
Vitocell 360-M (type SVSB) heating water buffer cylin-
der with DHW heating 708/30 708/30 708/30
8.3 Connections on the water side
Connection on the DHW side
Vitodens 200-W gas condensing combi boiler
For the DHW connection, connection sets for surface or flush mount-
ing are available as accessories. The instantaneous water heater
provides direct DHW heating.
If used in conjunction with galvanised pipes, note that the instanta-
neous water heater is designed as a stainless steel plate heat
exchanger with copper solder joints (observe the flow rule).
In existing installations (modernisation projects), the risk of electro-
lytic corrosion is low, since a protective layer will have formed on the
inside of the pipes.
If DHW is to be drawn simultaneously from several points, we rec-
ommend the installation of a separate DHW cylinder in conjunction
with the gas system boiler (see "Decision making aids regarding
DHW heating").
With water hardness of 20 °dH and higher, we recommend the use
of a water treatment system in the cold water line when heating
DHW.
Design information
(cont.)
VITODENS
VIESMANN
127
5853906
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