47
Other settings for room control >
Limiting the lower limit for the room temperature range. Limiting the range can prevent an
incorrect setting from being set.
Limiting the maximum limit for the room temperature range.
0.0...95.0°C
0...95°C
5.0°C
50.0°C
Room temp. range,
minimum value
Room temp. range,
maximum value
Setting
Factory
setting
Setting
range
Information about settings
Supply water minimum limit with the outdoor temperatu-
re at -20. The minimum allowed supply water temperature
when the outdoor temperature is -20 °C or below if it has
been set higher than the “Supply water minimum limit” (see
p. 12). This means that when the outdoor temperature is bet-
ween 0 °C ...-20 °C the minimum allowed temperature for the
supply water changes linearly between the supply water mi-
nimum limit setting and supply water minimum limit (out-
door t. -20 °C) setting.
Blocking a temperature drop during freezing temperatures:
Supply water pre-increase:
Temperature
drop blocked
Supply water pre-increase
radiator network
floor heating
Pre-increase time *
)
Pre-increase learning *
)
Supply water min limit
at -20
radiator network
floor heating norm.
floor h. damp rooms
-45°C
4.0°C
1.5°C
1h
50%
15°C
15°C
23°C
0...-50°C
0.1...25.0°C
1...10h
0%...100%
0...50°C
Temperature drops are blocked at this set outdoor temperature. The effect of the tempe-
rature drop function begins to be decreased 10 °C before this setting. The purpose of this
function is to decrease the danger of water pipes freezing during extremely cold weather
and to ensure that after a temperature drop period the temperature can rise to a normal
level in a reasonable length of time. The setting is same for circuits H1 and H2.
The amount, in degrees, of the automatic supply water pre-increase occurring at the end of the
temperature drop (week clock or exception calendar). The pre-increase helps raise the room
temperature more quickly back to a nominal room temperature after a temperature drop.
The pre-increase function raises the supply water temperature the pre-increase amount for
the length of time determined here. The pre-increase begins to effect before the week clock
/exception calendar controls to a nominal temperature.
The controller can use pre-increase learning to increase the above mentioned pre-increase
time if the controller has not obtained a nominal temperature in the set pre-increase time. If,
e.g., the pre-increase time has been set at 2 hours, and self- learning at 50%, the controller
can, if necessary, either shorten or lengthen the pre-increase time by 50%, so that the pre-in-
crease time can be 1-3 hours. The room temperature measurement must be in use for pre-
increase self-learning to occur.
Minimum limits for the supply water temperature at different outdoor temperatures:
Radiator network
and Floor hea-
ting, normal
Floor heating,
damp rooms
+ 25
+20
+15
+10
Supply water
°C
-20°C
+20
0
Outdoor
temp.
*
)
shows only, if Supply water pre-increase is in use
