Viessmann VITOLADENS 300-W Technical Manual page 6

Vitoladens 300-W
213
1
380
A Compulsory in conjunction with DHW cylinders, below. Other-
wise, recommendation only.
ADG Expansion vessel G ¾
(in the mounting frame or on-site expansion vessel)
E Drain
HR Heating return
Note
Install the fuel oil filter at the height of the lower edge of the boiler and
as near as possible to the boiler, to ensure the oil hoses are long
enough when removing the burner. The fuel oil filter may be fitted either
on the r.h. or l.h. side of the boiler to suit local conditions.
Variable speed heating circuit pump in the Vitoladens 300-W
The integral circulation pump is a high efficiency DC pump (corre-
sponding to energy label A) with more than 50% less power consump-
tion than conventional pumps.
The pump speed and consequently the pump rate is regulated subject
to the outside temperature and the switching times for heating or
reduced mode. The control unit transmits the current default speed via
an internal data BUS to the circulation pump.
Individually match the minimum and maximum speed plus the speed
for reduced mode to the existing heating system using the control unit
codes.
VIESMANN
6
(cont.)
Ø 125
KAS
HV
ADG
240
SRL
HR
E
SVL
110
177
302
370
480
OKFF
HV Heating flow
KAS Boiler flue connection
OKFF Top edge, finished floor
SRL Cylinder return
SVL Cylinder flow
Side clearance for service work
For burner service, use the cleaning set available as an accessory.
The burner holder supplied as part of this set enables an optimum
service position to be achieved for the burner. In addition, a side clear-
ance of 300 mm (on the left or right) next to the Vitoladens 300-W is
recommended.
The minimum pump rate is selected in coding address "E7". The max-
imum pump rate is selected in coding address "E6". The setting ranges
of these codes are limited by boiler-specific parameters.
Circulation pump UPM 15
Rated voltage V~
Power consumption W
VITOLADENS 300-W/VITOLADENS 333-F
230
max.
min.
in the delivered condition
70
6
37