Viessmann vitodens Technical Manual page 32

1.3 Selection guide for DHW cylinders
DHW cylinder
200
Separate DHW cylinders
For increased DHW convenience separate
300
DHW cylinders are available in white
finish for the following versions
H wall mounted (80 litres)
H below the boiler (120 or 150 litres)
H installed adjacent to the boiler (160, 200
or 300 litres).
available in white.
1
DHW cylinder with 350 to 1 000 litres
capacity are available in Vitosilver, and
may also be used in accordance with the
aforementioned rated output.
Sizing DHW cylinders (up to 35 kW)
This summary enables the approximate
sizing of the DHW cylinder for
H small households
H average households (3 to 4 persons).
No.
Drawing rate in Wh
Volume of drawn hot
water per use or
useful capacity in litres
1 1 Bath 1600 Bath 1600
to DIN 4471 to DIN 4471
2 2 Bath 1700 Bath 1700
to DIN 4471 to DIN 4471
3 3 Small & stepped bath Small & stepped bath
tub tub
4 4 Large bath tub Large bath tub
(1 800 × 750 mm) (1 800 × 750 mm)
5 5 Shower cubicle with Shower cubicle with
mixer tap & standard mixer tap & standard
shower head shower head
6 6 Shower cubicle with Shower cubicle with
1 top & 2 side spray 1 top & 2 side spray
heads heads
7 7 Washbasin Washbasin
8 Bidet
8 Bidet
*1
Unsuitable combination.
Small households
Average households
Example:
For new buildings, select the appropriate
DHW cylinder in accordance with
DIN 4708. The accommodation is an
average household with 3 occupants.
32
Vitodens 200 and 300 (up to 35 kW) as
boilers are intended (as ex works version)
for DHW heating with a separate DHW
cylinder. For this purpose, Vitodens 200
and 300 (up to 35 kW) provide an integral
diverter valve.
To connect a separate DHW cylinder,
always order the connection set for the
DHW cylinder.
For Vitodens 300 from 49 kW, DHW
cylinder connections with separate
circulation pump for cylinder loading
(accessory) are provided.
Various consumer combinations may
apply.
(1 to 2 persons)
1 2
Bath Bath
1600 1700
to to
DIN 4471 DIN 4471
5 820 6 510
140 160
*1
80 litres
*1
80 litres
*1
80 litres
*1
120 litres
*1 *1
*1 *1
*1 *1
*1 *1
80 litres 80 litres
120 litres 120 litres
80 litres 80 litres
*1
150/160 litres 150/160 litres
80 litres 80 litres
80 litres 120 litres
80 litres 80 litres
80 litres 120 litres
(1 to 2 persons)
(3 to 4 persons)
A DHW cylinder of 120 litres capacity
should be selected, if a bath 1600 with a
drawing rate of 140 litres and a shower
cubicle (incl. mixer tap and standard
shower head) with 40 litres drawing rate
are used simultaneously.
3 4 5
Small & Large bath Shower
stepped tub cubicle with
bath tub (1 800 × mixer tap &
750 mm) standard
shower head
4 890 8 720
120 200
*1 *1
*1 *1
120 litres 150/160 litres
*1 *1
*1 *1
120 litres
*1
80 litres
*1
120 litres 120 litres
*1
120 litres 120 litres
*1
200 litres 150/160 litres
80 litres 120 litres
120 litres 150/160 litres
*1
80 litres
200 litres
80 litres 80 litres
80 litres 150/160 litres
80 litres 80 litres
80 litres 150/160 litres
Determine the DHW cylinder size in
accordance with the specific DHW
demand.
For further details relating to the DHW
cylinders, see specification, separate
datasheet for DHW cylinders for wall
mounted boilers and the Technical Guide
on Vitocell DHW cylinders.
Note
If identical comsumers are combined with
each other, only the individual consumer
will be considered and not the
combination.
6 7
Shower Washbasin Bidet
cubicle
with 1 top
& 2 side
spray heads
1 630 4 070 700
40 100
80 litres 80 litres 80 litres
120 litres
80 litres 80 litres 80 litres
120 litres 120 litres
80 litres 80 litres 80 litres
120 litres 120 litres
120 litres 80 litres
200 litres 150/160 litres 150/160 litres
80 litres 80 litres 80 litres
80 litres 80 litres 80 litres
80 litres 80 litres 80 litres
80 litres 80 litres 80 litres
80 litres 80 litres 80 litres
80 litres 80 litres 80 litres
80 litres 80 litres 80 litres
80 litres 80 litres 80 litres
8
810
17 20
80 litres
120 litres
80 litres
120 litres
80 litres
120 litres
80 litres
80 litres
80 litres
80 litres
80 litres
80 litres
80 litres
80 litres
80 litres
VITODENS