Chromalox SDRA-60-43 Посібник з монтажу та експлуатації - Сторінка 3
Переглянути онлайн або завантажити pdf Посібник з монтажу та експлуатації для Обігрівач Chromalox SDRA-60-43. Chromalox SDRA-60-43 8 сторінок. Portable industrial unit blower air heater
Також для Chromalox SDRA-60-43: Інструкція з монтажу та експлуатації (10 сторінок)
Друкувати сторінку
Temperature Rise vs Duct Length
30 kW
100
1500
RPM
75
50
2200
RPM
25
0
0
25
50
75
Duct Length in Feet
Temperature Rise vs Duct Length
48 kW
160
1500
140
RPM
120
100
80
60
40
20
0
0
25
50
75
Duct Length in Feet
Temperature Rise vs Duct Length
60 kW
200
180
1500
160
RPM
140
120
100
80
60
40
20
0
25
50
0
75
Duct Length in Feet
Rear of
Heater
1/4-20 Wing nut
Provided with
AD-16
WIRING (cont'd.)
1800
RPM
175
125
150
100
1800
RPM
2200
RPM
100
125
150
175
1800
RPM
2200
RPM
175
100
125
150
ACCESSORIES
Adjustable Damper and Duct Adaptor
SDRA heaters can be easily field if modified to vary the fan speed.
There may be some circumstances where the use of short lengths of
duct may not create sufficient pressure drop to achieve the desired tem-
perature rise. This may also be the case of using the unit without a duct.
This insufficient static pressure drop may result in high air flow, with
the maximum temperature rise below the desired level, (even after the
fan speed has been reduced to the minimum rpm). An accessory AD-
16, adjustable damper, is available and can be attached to the heater to
produce a static load, ranging from .1" to .19" H
reduce the amount of air flow.
The "Friction Loss" Graph 4 provides the actual test data on the
friction loss for the AD-16 damper attachment. The losses are stated as
the equivalent length in feet of 20" duct.
Friction Loss AD-16 Damper
90
80
70
60
50
40
Damper Full Open
30
20
10
0
1400
1600
The SDRA Dragon includes 2 thermostats. The thermostat on the
air inlet end of the unit is for the minimum air temperature desired. The
thermostat on the discharge end of the heater is for the maximum air
temperature desired. The two thermostats are wired in series with the
heating element contactor coil. The temperature range of both ther-
mostats is 60 - 180˚F.
Adjustable
Damper
3
O which will act to
2
Damper Full Closed
1800
2000
2200
Fan RPM
Front of
Heater
Duct
Adapter
2400