Viessmann VITOCAL 300-G Technical Manual page 51

Design information
Cylinder with external heat exchanger (primary store system) and heating lance
WW
B
A
C
D
KW Cold water
WW Domestic hot water
B DHW inlet from the heat exchanger
During cylinder heating (no draw-off) in the primary store system, cold
water from the bottom of the cylinder is drawn by cylinder primary
pump E, heated in heat exchanger K and returned to the cylinder
via heating lance A fitted into the flange.
Equipment required
Pos. Description
A Heating lance
C Cylinder temperature sensor
D Vitocell 100-L, (750 or 1000 litre capacity)
E Cylinder primary pump
G Two-way motorised ball valve (N/C)
H Flow limiter
K
Plate heat exchanger Vitotrans 100
Selection, primary store system
Primary store
Primary store
Vitocell 100-L, type CVL
Plate heat exchanger Vitotrans 100
Note
Heat exchanger pressure drop values, see technical guides for DHW cylinders.
VITOCAL 300-G
(cont.)
E G
H
K
KW
Capacity Optional booster heater
l Immersion heater (on site)
750
1000
L
L Heat pump interface
Further explanations see the following table.
The generously sized outlet apertures in the heating lance result in low
flow velocities, which in turn provide a clean temperature stratification
inside the cylinder.
DHW booster heating is possible if an additional immersion heater is
installed (on site).
Quantity
1
1
1
1
1
1
1
Instantaneous heating
water
heater (on site, for pre-
heated
DHW)
x
x
Part no.
Z004 280
7170 965
see Viessmann pricelist
7820 403
or
7820 404
7180 573
on-site
see Viessmann pricelist
Applications
x up to 16 people
x up to 16 people
VIESMANN
3
51