Viessmann Vitocell 100-L User Manual

Version 4 — cylinder loading system with several Vitocell 100-L connected in series and Vitotrans 222 for
modulating flow temperatures
A1A1
M
B
N
A
D
O
C
A
L
E
G
H
K
F
P
A
Q
21
17 B
52 20
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.
■ In order to ensure fault-free heating operation, the residual head of
cylinder loading pump L must be greater than that of DHW circu-
lation pump C, giving due consideration to the pipework pressure
drop.
Connect in series if relatively continuous DHW demand can be
expected, e.g. in large apartment buildings.
Note the max. draw-off rate when sizing for DHW heating. According
to DIN 1988, the max. flow velocity should not be higher than 2 m/s
(affects stratification inside the DHW cylinder).
The benefits of connection in series are particularly evident when
heat exchangers with low output ratings are combined with large cyl-
inder capacities, as a large cylinder capacity makes it possible to
use smaller boilers or the input of district heating.
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
47
5414646
7

Viessmann Vitocell 100-L Specifications

General

Brand	Viessmann
Model	Vitocell 100-L
Category	Heating System
Language	English