UNT-SVX10G-E4
30
Installation
Electric heaters shall run with the minimum airflow described in following table. To maintain this minimum airflow
the fan motor shall not run below the following voltage. This results in reduced airflow operating range described in
the following table.
Minimum air flow (m
3
/h) function electric heater
m
3
/h
Electric heater capacity
Unit Size
500 W
750 W
1000 W
1500 W
2000 W
3000 W
FED 100
80
FED 200
80
120
160
FED 300
80
120
160
240
320
FED 400
160
240
320
480
FED 500
160
240
320
480
FED 600
160
240
320
480
Voltage range
2 and 4 pipe cooling or heating
FED100
Voltage
Airflow range
V min
2
V medium
3.6
V max
5.1
FED200
Voltage
Airflow range
V min
2.3
V medium
4.1
V max
5.8
FED300
Voltage
Airflow range
V min
2.6
V medium
5.1
V max
7.6
FED400
Voltage
Airflow range
V min
3
V medium
6.9
V max
9
FED500/FED600
Voltage
Airflow range
V min
3.5
V medium
5.2
V max
7
Minimum Voltage
2 pipe electric heat heating mode
FED100
Electric heater capacity
500 W
V min
2.9
Airflow range
71%
FED200
Electric heater capacity
500 W
750 W
1000 W
V min
3.2
3.6
3.6
Airflow range
74%
63%
63%
FED300
Electric heater capacity
500 W
750 W
1000 W
1500 W
2000 W
V min
3.6
3.6
3.6
4.4
4.4
Airflow range
80%
80%
80%
64%
64%
FED400
Electric heater capacity
1000 W
1500 W
2000 W
3000 W
V min
3
3
3
3
Airflow range
100%
100%
100%
100%
FED500/FED600
Electric heater capacity
1000 W
1500 W
2000 W
3000 W
V min
3.5
3.5
3.5
3.5
Airflow range
100%
100%
100%
100%
100%
100%
100%
100%
Example
FED 300
Operating range without electric heater or in cooling mode Graph 1
Operating range for electric heater 500 W - 750 W - 1000 W in heating mode Graph 2
Operating range for electric heater 1500 W - 2000 W in heating mode Graph 3
100%
UNT-SVX10G-BAT1_Mise en page 1 7/26/2013 2:41 PM Page 30
