Atag XL75W - Page 36

36
Parallel boiler connection
The boiler comes as standard with a
SDUDOOHOFRQQHFWLRQIRUWKHÀXHJDV
outlet and air supply system.
For the air supply opening (1) diameter
DQGWKHÀXHJDVRXWOHWFRQQHFWLRQ
see table below.
The air supply channel can be
connected to it, or, if it is installed as an
“open device” (Drainage category B),
DQDLU¿OWHUPXVWEH¿WWHG
Concentric boiler connection
The boilers 75-105-125-150 can be
converted into a concentric connection
using the parallel/concentric adapter
100/150 (optional) and carrying out the
following tasks:
- Open and remove the front panel
and the top panel (follow the
instruction on page 42.
- Lift the parallel connection.
- Disconnect the main switch 230V
connection and remove it.
- Replace the parallel connection
with parallel concentric adapter.
 &RQQHFWDQG¿WWKHPDLQVZLWFK
230V according to previous
FRQ¿JXUDWLRQ
The air supply opening has a diameter
of ø150mm.
7KHÀXHJDVRXWOHWFRQQHFWLRQKDVD
diameter of ø100mm.
7KHÀXHJDVRXWOHWDLUVXSSO\V\VWHP
is then connected to the concentric
connection component.
Installation
Connections
$LUÀXHJDVGXFWVIRULQGLYLGXDOERLOHUV
The ATAG XL W-boilers can be used
both in an “open” and in “room sealed”
system.
Open system
The required combustion air is taken
from the immediate environment
(boiler room). For this purpose, please
comply with the applicable boiler room
ventilation regulations.
When using boiler category B23 or
B33 as an ‘open boiler’, the protection
degree of the boiler will be IPX0D
instead of IPX4D.
$QDLU¿OWHUPXVWEH¿WWHGRQWKHDLU
intake of the boiler (available as an
accessory on pages 15-17.
Room sealed system
The required combustion air is sucked
in from the outside through a duct.
This improves installation possibilities
within a building. In general, outside air
is cleaner than air from the boiler room.
:KHQWKHERLOHULVZRUNLQJLW
produces a white plume of water
vapour. This plume is harmless but
PD\FDXVHVRPHLQFRQYHQLHQFH
particularly in the case of wall
WHUPLQDO$VDUHVXOWURRIWHUPLQDOV
are preferred.
,QDURRPVHDOHGLQVWDOODWLRQURRI
terminals should be at the same
KHLJKWSUHYHQWLQJÀXHJDVIURP
being sucked in by an other boiler
(recirculation). Outlets in recesses
and near erected walls may also
EULQJDERXWÀXHJDVUHFLUFXODWLRQ
Recirculation has to be prevented at
all times.
Boiler type $LUGXFWÀXHJDVGLDPHWHU
XL75W
100 - 100
XL105W
100 - 100
XL125W
100 - 100
XL150W
100 - 100
XL180W
130 - 130
XL210W
130 - 130
21
2
4
1
3
Fan settings correction
By setting parameter (21-2-4) it is
possible to compensate for a higher
ÀXHJDVSUHVVXUHGLႇHUHQFH,WLV
required to have a pressure drop
FDOFXODWLRQRIWKHDSSOLHGÀXHJDV
system.
According the calculated pressure
drop, the correct value for parameter
(21-2-4) has to be chosen from the
table below.
For setting parameters see the
applicable chapter.
Flue Gas System pressure drop
Parameter
(21-2-4)
XL75 XL105 XL125 XL150 XL180 XL210
0 - 600 156 243 143 200 215 265
700 204 295 177 230 280 321
800 224 350 207 275 313 370
900 250 405 240 300 375 -
1000 278 457 260 304 375 -