Viessmann VITODENS 200-W WB2B 105, Инструкции по установке и эксплуатации

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Control Technology
30
Outdoor Reset Programming Unit
(continued)
Heating curve adjustment
Low-temperature heating system,
e.g. radiant floor heating
Medium-temperature heating
system, e.g. cast iron radiation,
staple-up radiant floor heating
High-temperature heating system,
e.g. fintube radiation, fan coils
The heating curves represent the
relationship between the outdoor
temperature and the boiler water or
supply temperature.
Put simply: The lower the outdoor
temperature, the higher the boiler
water or supply temperature.
In turn, the room temperature is
dependent on the boiler water or
supply temperature.
If a different room temperature is set,
the curves are shifted parallel to the
desired room temperature axis.
The control unit regulates the boiler
water temperature (= supply
temperature of heating circuit without
mixing valve)
and the supply
temperature of the heating circuit with
mixing valve (in conjunction with the
accessory kit for a heating circuit with
mixing valve) according to the outdoor
temperature. The boiler water
temperature is automatically raised by
0 to 72º F / 0 to 40 K higher than the
currently required set supply
termperature (in the factory default
setting the differential temperature is
14.4º F / 8 K). See coding address
“9F” in coding level 2.
The supply temperature that is required
to achieve a given room temperature
depends on the heating system and the
thermal insulation of the building that is
being heated.
The adjustment of the two heating
curves is used to match the boiler
water temperature and the supply
temperature to these conditions.The
boiler water temperature is limited
upwards by the fixed high limit and the
temperature set for the electronic high
limit.
The supply temperature cannot rise
above the boiler water temperature.
Factory settings:
H slope ”
n
” = 1.4
H
shift ”
N
” = 0
5
4
4
3
2
0
7
v
1
.5
0,2
2
,4
2
,6
2
,8
3
,0
3
,2
3
,4
90
80
70
60
50
40
30
0 -5 -10 -15 -20 5 10
A
B
2
,0
2
,2
0,4
0,6
0,8
1,0
1,2
1,4
-30 -25
1
,8
1
,6
Outdoor temperature
B
o
ile
r
w
a
te
r
o
r
s
u
p
p
ly
te
m
p
e
ra
tu
re
Room -
set-point
temperature
194
176
158
140
122
104
86
ºF / ºC
ºC
ºF
50 41 32 23 14 5 -4 -13 -22
95
35
86
30
77
25
68
20
60
15
50
10
41
5
ºF
ºC
C