F
Heating water flow
G
Heating water return
H
Common cold water connection with safety assembly to
DIN 1988
K
Vitocell 100-L (here: 500 l capacity)
L
Cylinder loading pump (secondary), highly efficient
N
Spring-loaded check valve
O
Cylinder temperature sensor, top
(ON, plug
%
A)
P
Cylinder temperature sensor, bottom
(OFF, plug
%
B)
Note
■
Establish cold water connection H with a tee with straight flow to
the cold water connection of the Vitocell-L. Always make the cold
water connection to the Vitotrans 222 as a tee branch.
■ In larger DHW circulation networks, it may be necessary to briefly
switch off the DHW circulation pump to enable heating of the Vitocell
100-L.
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 control at the
control unit.
Version 2 — cylinder loading system with several Vitocell 100-L in parallel and Vitotrans 222 for modulating
flow temperatures
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, type HK3B),
Vitotronic 100 (type GC1B, GC4B),
Vitotronic 200 (type GW1B),
Vitotronic 300 (type GW2B, type GW4B) or
Vitotronic 300-K (type MW1B, type MW2B)
G
Plate heat exchanger
H
Heating water flow
K
Heating water return
L
Cylinder loading pump (secondary), highly efficient
N
Common 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-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. for sports halls, sports
grounds, swimming pools or shower rooms in commercial enterpri-
ses.
Parallel operation makes it possible to extract the max. draw-off rate
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 suffi-
ciently 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 control at the
control unit.
Installation — cylinder loading system
(cont.)
DHW heating
VIESMANN
41
5414 646 GB
7
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