UNT-SVX10G-E430
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
F
ED 100 80
F
ED 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 3333
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
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