GB.GOLDSK509.091101
We reserve the right to alter specifications without notice.
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Extract air temperature °C
Supply air temperature setpoint
°
C
Factory setting means:
If the extract air temperature is below 22 °C (breakpoint),
the supply air temperature setpoint will be automatically
regulated to be 3 °C (EA/SA differential) lower.
If the extract air temperature is above 22 °C, the supply air
temperature setpoint will be constantly 19 °C (step 2).
15
10
20
12
15
20
25
Ste
p 1
Step 2
Breakpoint
EA-/SA
dif
ferential
Step 3
Step 4
eRS regulation 1
1
2
3
15
20
22
9
10
12
15
20
25
27
8.2.1.1 eRS Regulation
ERS regulation means Extract air temperature-Related
Supply air temperature regulation. This means that the
temperature of the supply air is regulated in relation to
the temperature of the extract air. Under normal circum-
stances, the supply air temperature is regulated to be a
few degrees lower than the extract air temperature. In this
way, the heat exchanger will provide optimal perform-
ance, and this means excellent operating economy. ERS
regulation is suitable for use when there is excess heat in
the premises generated, for example, by machinery, light-
ing or people and the supply air devices in the premises
are suitable diffusing air below room temperature.
eRS ReGULatIOn 1
The control unit regulates the relationship between the
supply air and extract air temperatures according to a fac-
tory-preset curve.
See the chart to the right.
The steps, breakpoint and EA/SA differential plotted in
the curve can be changed at USER LEVEL under TEMPERA-
TURE/SETTINGS.
Settings:
Value
Setting
Factory
range
setting
Step
1 – 4
2
Breakpoint
15-23 °C
22 °C
(refers to extract air temp.)
EA/SA-Differential
1-5 °C
3 °C
The setting range for the breakpoint and EA/SA differen-
tial is limited by the Min. and Max. settings at
INSTALLA-
TION LEVEL under HAND TERMINAL.
eRS ReGULatIOn 2
This is used when special needs and conditions are such
that the factory preset ERS regulation 1 curve cannot pro-
vide the results required. Conditional on which settings are
made, it may be necessary to install a post-heating coil.
An individually adapted curve regulates the relationship
between the supply air and extract air temperature.
See the chart to the right.
The following settings are possible at USER LEVEL under
TEMPERATURE/SETTINGS:
Value
Setting
Factory
range
setting
Extract air temperature
X1 10-38 °C 15 °C
X2 11-39 °C 20 °C
X3 12-40 °C 22 °C
Supply air temperature setpoint
Y1 10-40 °C 20 °C
Y2 10-40 °C 18 °C
Y3 10-40 °C 14 °C
The setpoint displacement and summer night cooling
functions can also affect the preset temperatures.
X = Extract air temperature °C
Y
=
Setpoint
supply
air
temperature
°C
Breakpoints according to factory setting means:
If the extract air temperature is below 15 °C (X1) the set-
point for supply air temperature is constant 20 °C (Y1).
If the extract air temperature is 20 °C (X2) the supply air
temperature set point will be 18 °C (Y2).
If the extract air temperature is above 22 °C (X3), the
supply air temperature setpoint will be constantly 14 °C
(Y3).
eRS regulation 2