Version 2 — cylinder loading system with several Vitocell 100-L in parallel and Vitotrans 222 for modulat-
ing flow temperatures
C
D
B
N
A A
L
O
F
G
E
H
K
P
Q
A
A1A1
M
21 52 20B17
A5
B5
28
A
Vitocell 100-L, (here: 500 l capacity)
B
DHW circulation pipe
C
DHW circulation pump
D
Draw-off points (DHW)
E
Vitotrans 222 heat exchanger set with mixer assembly
F
Vitotronic 200-H, type HK1B, HK3B
Vitotronic 100, type CC1I, CC1E
*13
Vitotronic 200, type CO1I, CO1E
Vitotronic 300, type CM1I, CM1E
Vitotronic 300-K, type MW1B, MW2B
G
Plate heat exchanger
H
Heating water flow
K
Heating water return
L
Cylinder loading pump (secondary), highly efficient
N
Shared cold water connection with safety assembly to DIN 1988
O
Spring-loaded check valve
P
Cylinder temperature sensor, top
(ON, terminals %A)
Q
Cylinder temperature sensor, bottom
(OFF, terminals %B)
Note
Establish cold water connection N with a tee with straight flow to
the cold water connection of the Vitocell 100-L. Always make the
cold water connection to the Vitotrans 222 as a tee branch.
Parallel operation is particularly suitable for systems where the domi-
nant design criterion is a high peak output, e.g. sports halls, sports
facilities, swimming pools or shower rooms in commercial enterpri-
ses.
With parallel operation, the max. draw-off rate can be extracted from
each DHW cylinder. The DHW cylinders can be reheated in a short
time after the hot water has been drawn off subject to a sufficiently
high heat exchanger output being available.
Due to the necessary high flow temperatures of the heat source,
never use a directly connected heating circuit without mixer.
For optimum operation, disable the DHW cylinder priority at the con-
trol unit.
*13
Control unit has no output sK for control of a DHW circulation pump.
Installation — cylinder loading system
(cont.)
DHW heating
VIESMANN
45
5414646
7
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