GB.GOLDSKE.160901
www.swegon.com 63
We reserve the right to alter specifications without notice.
6.4.11.6 Electric air heater
If the electric air heater has been in operation, the air heater is
post-cooled for about 3 minutes (factory setting) when stop has
been activated.
The text “After cool” appears in the hand-held terminal.
Settings:
Value Setting
range
Factory
setting
After cool 1 - 25 min 3 min.
Electric air heater
6.4.11.7 Season Heat
The Season Heat function involves that the extra regulation
sequence 1 functions is activated. See Section 6.4.11.3.
When both the standard function for reheating and the extra
heating sequence are activated, it is possible to alternate
between these via a digital input or communication.
Example: Hot water is only available in the winter. In the summer,
any reheating load is backed up by an electric air heater. Change-
over can be done manually or via external thermostat, external
clock function or the like.
Settings:
Value Setting range Factory setting
Season Heat Inactive/Extra reg.
seq. 1 closed contact/
Extra reg. seq. 1 open
contact/Extra reg.
seq. 1 Manual
1)
Inactive
Extra reg. seq.
enabled
(manual only)
On/Off
2)
Off
Season Heat
6.4.11.8 Automatic functions
Frost guard function, air heater for water
The frost guard function is always active if the connected air
heater for hot water has been supplied by Swegon.
The function activates a heating device that keeps the tempera-
ture in the coil at 13 °C while the air handling unit is operat-
ing and 25 °C in the coil when the unit is stopped. An alarm is
initiated and stops the AHU if the temperature sensor senses a
temperature below 7 °C.
Capacity reduction of the electric air heater
Only in combination with Swegon's electric air heater.
A min. permissible air velocity of 2.0 m/s is required for prevent-
ing the electric heating elements from becoming overheated
when they are generating full heating output.
If the air handling unit supply airflow drops below the value
that corresponds to an air velocity of 2.0 m/s across the heat
exchanger, the heating output of the air heater will be automati-
cally reduced.
1)
Extra regulation sequence 1 closed contact = When the contact
is closed, only the standard reheating function is active. When
the contact is opened a changeover to extra heating regulation
sequence occurs.
Extra regulation sequence 1 open contact = When the contact
is open, only the standard reheating function is active. When
the contact is closed, a changeover to extra heating regulation
sequence occurs.
Extra regulation sequence 1 Manual = Changeover is done in the
hand-held terminal or on the AHU's web page.
2)
Extra regulation sequence in Off position involves that the
standard function for reheating is active and in the On positin a
changeover to extra regulation sequence occurs.
To Next Page
Loading...
