Axial Fan Heaters

Axial Fan Heaters (Series AF-20) are ideal for drying, curing and warming applications typically found in film processing, labs, and medical instruments.

Axial Fan Heaters, which mount directly to square axial fans are available in several sizes with a broad range of wattages and custom features. The AF-20 heater housing uses the same mounting holes and functions as a guard for both heaters and fans. (Fans available separately.)

All Axial Fan Heaters are UL recognized components under UL file number E154979.

Max Watt 1200 W

Max Inlet 158 °F

Max Exhaust 290 °F

Min SCFM 1

Max SCFM 105

Max Watt	Max Inlet	Max Exhaust	Min SCFM	Max SCFM
1200 W	158 °F	290 °F	1	105

Applications:

Drying
Curing
Warming

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Additional Information

General Product Specs

fan	size	shape	Wattage	voltage
2.4	2.375"	square	20 - 175W	12V, 20-100W 24V, 20-175W 48V, 20-175W 120V, 100-175W 208V, 240V, N/A
3.1	3.125"	square	50 - 450W	120V, 50-450W 208V 300-450W 240V, 300-450W
4.7	4.6875"	square	50 - 1200W	120V, 50-1000W 208V, 200-1000W 240V, 200-1200W

Thermostat & Thermal Fuse Options

Below are our thermostat and thermal fuse options. If a thermostat is specified, it must be used in conjunction with a thermal fuse for UL approved versions. Fuse setpoint is a minimum 25°C above thermostat setpoint or routine temperature spike.

Thermostat	OvertempErature Cutout
X	No Thermostat
1A	65°C (149°F)
1B	70°C (158°F)
1C	80°C (176°F)
1D	85°C (185°F)
1E	90°C (194°F)
1F	100°C (212°F)
1G	120°C (248°F)
1H	130°C (266°F)
1J	150°C (302°F)

Thermal Fuse	Temperature
X	No Fuse
A	72°C (161°F)
B	77°C (171°F)
C	84°C (183°F)
D	93°C (199°F)
F	104°C (219°F)
H	117°C (243°F)
K	128°C (262°F)
L	152°C (306°F)
M	184°C (363°F)
N	192°C (377°F)
R	229°C (444°F)

4.7" Pressure Drop Data

AF20-800-120-4.7 EBM PAPST 4606N (120V AC Fan & Heater)

4.7 Pressure Drop Data Image

				Heat Off	Heat On
Power	Fan Speed (RPM)	Vel (meas) FPM x 100	CFM	Pr. Diff in.H2O	Pr. Diff in.H2O
Wall *	2895	13-15		0.175	0.185
100%	2820	13-15		0.170	0.185
98%	2855	10-12		0.175	0.180
96%	2850	10-12		0.175	0.180
94%	2780	9-11		0.165	0.170
92%	2730	9-11		0.160	0.160
90%	2615	9-11		0.145	0.155
88%	2220	8-10		0.110	0.115
86%	<1300

* Fan plugged directly into a wall outlet
% Fan wired through an SR100 Power Controller

			Heat Off
Variac Power	Fan Speed RPM	CFM	Pr. Diff. in. H2O
120	2915	99.5	0.165
115	2870	98.1	0.160
110	2815	96.2	0.160
105	2720	92.9	0.145
100	2610	89.2	0.125
95	2475	84.5	0.115
90	2285	78.0	0.100
85	2020	69.0	0.080
80	1720	58.8	0.055
75	1470	50.2	0.040
70	1240	42.4	0.030
65	1090	37.1	0.020
60	945	32.3	0.150
55	800	27.3	0.010

			Heat On
Control Device *	Fan Speed RPM	CFM	Pr. Diff. in. H2O
SR100	2895	98.9	0.185
	2820	96.4	0.185
	2855	97.5	0.180
	2850	97.3	0.180
	2780	95.0	0.170
	2730	93.3	0.160
	2615	89.4	0.155
	2220	75.8	0.115
Variac	1960	66.9	0.085
	1690	57.7	0.065
	1430	48.8	0.050
	1190	40.7	0.040
	1070	36.5	0.030
	930	31.8	0.025
	795	27.1	0.020

* An SR100 power controller was used initially, but it would not control RPM below about 2200 RPM. A Variac was then used. It was good for all RPM.

Fan Only
Flow CFM	Press. in. H2O
0.0	0.387
7.0	0.36
11.0	0.34
15.0	0.32
19.5	0.3
23.5	0.28
27.5	0.26
34.0	0.24
39.5	0.23
46.0	0.22
59.0	0.2
67.5	0.18
75.0	0.16
81.5	0.14
87.5	0.12
92.0	0.1
95.5	0.08
99.0	0.06
101.5	0.04
104.0	0.02
106.0	0

3.1" Pressure Drop Data

AF20-450-120-3.1 EBM PAPST 8506N (120V AC Fan & Heater)

3.1 Pressure Drop Data Image

				Heat Off	Heat On
Power	Fan Speed (RPM)	Vel (meas) FPM x 100	CFM	Pr. Diff in.H2O	Pr. Diff in.H2O
Wall *	3310	12-14		0.195	0.200
100%	3303	12-14		0.195	0.200
98%	3300	12-14		0.195	0.200
96%	3298	12-14		0.195	0.200
94%	3274	12-14		0.190	0.200
92%	3222	12-14		0.185	0.195
90%	3204	12-14		0.180	0.190
89%	3040	12-14		0.170	0.170
<89%	drops

* Fan plugged directly into a wall outlet
% Fan wired through an SR100 Power Controller

			Heat Off
Variac Power	Fan Speed RPM	CFM	Pr. Diff. in. H2O
120	3305	35.95	0.210
115	3297	35.87	0.210
110	3283	35.72	0.205
105	3268	35.55	0.205
100	3240	35.25	0.200
95	3215	34.98	0.200
90	3167	34.45	0.195
85	3100	33.72	0.185
80	3016	32.81	0.175
75	2880	31.33	0.160
70	2675	29.10	0.140
65	2122	23.08	0.090
60	1370	14.90	0.040

Fan Only
Flow CFM	Press. in. H2O
0.0	0.279
3.6	0.26
6.0	0.24
8.0	0.22
9.6	0.2
11.3	0.18
13.2	0.16
15.5	0.14
17.9	0.12
22.0	0.1
26.8	0.08
30.0	0.06
32.2	0.04
34.2	0.02
35.9	0

2.4" Pressure Drop Data

AF-175-120-2.4 EBM PAPST 614NN (24V DC Fan, 120V Heater)

2.4 Pressure Drop Data

				Heat Off	Heat On
Power Volts *	Fan Speed (RPM)	Velocity FPM x 100	CFM	Pr. Diff in.H2O	Pr. Diff in.H2O
28.5	6000	15-16		0.200	0.215
27.0	5955	12-14		0.190	0.200
24.0	5075	12-14		0.145	0.150
21.0	4490	12-14		0.110	0.130
18.0	3810	7-9		0.080	0.090
16.5 *	3450	7-9		0.070	0.070
15.0 *	3095	6-7		0.055	0.060

* Fan is rated for 18-24V DC

			Heat On
Variac Power	Fan Speed RPM	CFM	Pr. Diff. in. H2O
28.5	6000	0.215	0.215
27.0	5955	0.200	0.200
24.0	5075	0.150	0.150
21.0	4490	0.130	0.130
18.0	3810	0.090	0.090
16.5 *	3450	0.070	0.070
15.0 *	3095	0.060	0.060

Heat On
CFM	Pr. Diff. in. H2O
0.0	0.000
27.1	0.020
31.8	0.025
36.5	0.030
40.7	0.040
48.8	0.050
57.7	0.065
66.9	0.085
75.8	0.115
89.4	0.155
93.3	0.160
95.0	0.170
97.3	0.180
97.5	0.180
96.4	0.185
98.9	0.185

Fan Only
Flow CFM	Press. in. H2O
0.0	0.278
4.8	0.21
10.0	0.13
15.3	0.105
20.3	0.06
24.7	0

Product Fittings

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Wattage

15
20
50
100
150
175
200
300
350
400
450
500
600
700
800
900
1000
1200

Voltage

Thermostat

none
65°C
70°C
80°C
85°C
90°C
100°C
120°C
130°C
150°C

Fuse

none
93°C
104°C
117°C
128°C
152°C
184°C
192°C
229°C

Lead Length

Heater Size

2.4" (60mm)
3.1" (80mm)
4.7" (120mm)

Controller

Call for Control Options

Upgrade Options

I need a fan to go with it.
I’m an OEM and I’d like to customize this part.
I’m an OEM and I’m interested in the heater coming with a plug and/or wire harness.

Wattage

15
20
50
100
150
175
200
300
350
400
450
500
600
700
800
900
1000
1200

Voltage

Thermostat

none
65°C
70°C
80°C
85°C
90°C
100°C
120°C
130°C
150°C

Fuse

none
93°C
104°C
117°C
128°C
152°C
184°C
192°C
229°C

Lead Length

Heater Size

2.4" (60mm)
3.1" (80mm)
4.7" (120mm)

Controller

Call for Control Options

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Axial Fan Heaters

Applications:

Additional Information

General Product Specs

Thermostat & Thermal Fuse Options

4.7" Pressure Drop Data

AF20-800-120-4.7 EBM PAPST 4606N (120V AC Fan & Heater)

3.1" Pressure Drop Data

AF20-450-120-3.1 EBM PAPST 8506N (120V AC Fan & Heater)

2.4" Pressure Drop Data

AF-175-120-2.4 EBM PAPST 614NN (24V DC Fan, 120V Heater)

Product Fittings

Wattage

Voltage

Thermostat

Fuse

Lead Length

Heater Size

Controller

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