Installation Sequence Preparing For Boiler Installation - Viessmann Vitoladens 300-W Installation And Service Instructions Manual

Installation sequence
Preparing for boiler installation
!
Please note
Avoid damaging the appliance.
Connect all pipework free of load and torque
stress.
480
G
A B C D EF
Fig. 1
Heating flow Rp
A
¾
Expansion vessel connection G
B
Cylinder flow G
C ¾
Cylinder return G
D ¾
E Heating return Rp
¾
1. Prepare the water connections. Thoroughly flush
the heating system.
2. Prepare the oil connections (oil filter):
■ Single line filter (magnum filter bowl with large fil-
ter element, filter grade max. 40
matic fuel oil air vent valve (see page 12).
Fit the filter as near as possible to the lower edge
■
of the boiler (on l.h. or r.h. side) to leave the flexi-
ble oil lines inside the boiler long enough to
remove the burner.
8
380
K
F
¾ G
H
K
3. Prepare the electrical connections.
m) with auto-
µ
For on-site preparation of the water and electri-
cal connections, see the installation instructions
for the pre-plumbing jig or mounting frame.
Filling/draining
Wiring area
Dimension for installation with DHW cylinder below
the boiler
Condensate drain
■ Power cable: NYM-J 3 x 1.5 mm
ing 16 A, 230 V/50 Hz
■ Accessory cables: NYM with required number of
cores for external connections
■ All cables in area " " should protrude 1200 mm
G
from the wall
2 , max. fuse rat-