Version 2 - Cylinder Loading System With Several Vitocell 100-L In Parallel And Vitotrans 222 For Modulating Flow Temperatures - Viessmann Vitocell 100-H Technical Manual

Installation — cylinder loading system
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
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.
Version 2 — cylinder loading system with several Vitocell 100-L in parallel and Vitotrans 222 for modulating
flow temperatures
B
P
Q
A
N
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
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.
DHW heating
(cont.)
N Spring-loaded check valve
O Cylinder temperature sensor, top
P Cylinder temperature sensor, bottom
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.
O C
A A
H Heating water flow
K Heating water return
L Cylinder loading pump (secondary), highly efficient
N Common cold water connection with safety assembly to
O Spring-loaded check valve
P Cylinder temperature sensor, top
Q Cylinder temperature sensor, bottom
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.
(ON, plug %A)
(OFF, plug %B)
5 A
F
5 B
A1
28
21 17 B 52
D
M
L
G
E
DIN 1988
(ON, terminals %A)
(OFF, terminals %B)
A1
20
H
K
7
VIESMANN
41