Installation - Cylinder Loading System; Version 1 - Cylinder Loading System With One Vitocell 100-L And Vitotrans 222 For Modulating Flow Temperatures - Viessmann Vitocell 300-H Technical Manual

Installation — cylinder loading system
7.1 DHW connection
Version 1 — cylinder loading system with one Vitocell 100-L and Vitotrans 222 for modulating flow tem-
peratures
A
O
P
K
A Draw-off points (DHW)
B DHW circulation pump
C Vitotrans 222 heat exchanger set with mixer assembly
D Vitotronic 200-H, type HK1B, HK3B
Vitotronic 100, type CC1I, CC1E
Vitotronic 200, type CO1I, CO1E
Vitotronic 300, type CM1I, CM1E
Vitotronic 300-K, type MW1B, MW2B
E Plate heat exchanger
F Heating water flow
Note
■ Establish cold water connection H 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 larger DHW circulation networks, it may be necessary to briefly
switch off the DHW circulation pump to enable heating of the
Vitocell 100-L.
7
*13 Control unit has no output sK for control of a DHW circulation pump.
VIESMANN
44
28
5 A
5 B
21
B
N
L
H
*13
D
A1 A1
17 B 52 20
M
E
C
G Heating water return
H Shared 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)
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.
F
G
DHW heating