Watlow Heater Catalog

Air Heaters

Duct Heaters D SERIES Application: Medium Temperature Air 750°F (399°C) • Removable alloy 840 WATROD elements • Without thermostat • General purpose enclosure • Steel flange 1 6 and 12 element heaters have (1) 1 inch NPT conduit opening; 18, 24, 30 and 42 element heaters have (2) 1 inch NPT conduit openings; 36, 48, 54, and 60 element heaters have (2) 1 inch NPT and (2) 1 1 / 4 inch conduit openings 2 All flanges are 12 inches wide

®

®

G Typical

D

C

a b

3 ½ in. (89 mm) Typical

11 ⁄ in. (295 mm)

E

9 in. (229 mm)

10 ½ in. (267 mm)

8 ¾ in. (222 mm)

F

3 ½ in. (89 mm)

B

⁄ in. (10 mm) Diameter

A

7 ⁄ in. (200 mm)

¼ in. (6 mm)

# of Elem. Volts kW Ph

# Circ

Part Number

WATCONNECT P/N J T/C K T/C

Ship Wt. lbs. (kg)

“A” Dim. in. (mm)

“B” Dim. in. (mm)

“C” Dim. in. (mm)

“D” Dim. in. (mm)

“E” Dim. in. (mm)

“F” Dim. in. (mm)

“G” Dim. in. (mm)

30 W/in 2 (4.7 W/cm 2 ) 36 240 54.0 3 3 D36SX3S C4-144 C4-145 135 (62) 27 7 / 8 (708.0) 20

(508) 12 3 / 4 (324) 16 1 / 2 (419) 13 (330) 15 3 / 4 (400) 3 3 / 4 (95) (508) 12 3 / 4 (324) 16 1 / 2 (419) 13 (330) 15 3 / 4 (400) 3 3 / 4 (95) (508) 12 3 / 4 (324) 16 1 / 2 (419) 13 (330) 15 3 / 4 (400) 3 3 / 4 (95) (508) 14 3 / 4 (375) 18 1 / 2 (470) 15 (381) 17 3 / 4 (451) 4 1 / 4 (108) (508) 14 3 / 4 (375) 18 1 / 2 (470) 15 (381) 17 3 / 4 (451) 4 1 / 4 (108) (508) 14 3 / 4 (375) 18 1 / 2 (470) 15 (381) 17 3 / 4 (451) 4 1 / 4 (108) (508) 16 3 / 4 (425) 20 1 / 2 (521) 17 (432) 19 3 / 4 (502) 4 3 / 4 (121) (508) 16 3 / 4 (425) 20 1 / 2 (521) 17 (432) 19 3 / 4 (502) 4 3 / 4 (121) (508) 16 3 / 4 (425) 20 1 / 2 (521) 17 (432) 19 3 / 4 (502) 4 3 / 4 (121) (508) 18 3 / 4 (476) 22 1 / 2 (572) 19 (483) 21 3 / 4 (552) 5 1 / 4 (133) (508) 18 3 / 4 (476) 22 1 / 2 (572) 19 (483) 21 3 / 4 (552) 5 1 / 4 (133) (508) 18 3 / 4 (476) 22 1 / 2 (572) 19 (483) 21 3 / 4 (552) 5 1 / 4 (133) (508) 20 3 / 4 (527) 24 1 / 2 (622) 21 (533) 23 3 / 4 (603) 5 3 / 4 (146) (508) 20 3 / 4 (527) 24 1 / 2 (622) 21 (533) 23 3 / 4 (603) 5 3 / 4 (146) (508) 20 3 / 4 (527) 24 1 / 2 (622) 21 (533) 23 3 / 4 (603) 5 3 / 4 (146) (635) 20 3 / 4 (527) 24 1 / 2 (622) 21 (533) 23 3 / 4 (603) 5 3 / 4 (146) (635) 20 3 / 4 (527) 24 1 / 2 (622) 21 (533) 23 3 / 4 (603) 5 3 / 4 (146)

135 (62) 27 7 / 8 (708.0) 20

36 480 54.0 1 3 D36SX11S C/F C/F

36 480 54.0 3 2 D36SX5S C2-229 C2-230 135 (62) 27 7 / 8 (708.0) 20 42 240 63.0 3 7 D42SX3S C4-148 C4-149 155 (71) 27 7 / 8 (708.0) 20

155 (71) 27 7 / 8 (708.0) 20

42 480 63.0 1 3 D42SX11S C/F C/F

42 480 63.0 3 2 D42SX5S C2-229 C2-230 155 (71) 27 7 / 8 (708.0) 20 48 240 72.0 3 4 D48SX3S C4-148 C4-149 195 (89) 27 7 / 8 (708.0) 20

195 (89) 27 7 / 8 (708.0) 20

48 480 72.0 1 4 D48SX11S C/F C/F

48 480 72.0 3 2 D48SX5S C2-229 C2-230 195 (89) 27 7 / 8 (708.0) 20

205 (93) 27 7 / 8 (708.0) 20 205 (93) 27 7 / 8 (708.0) 20

54 240 81.0 3 6 D54SX3S C/F C/F 54 480 81.0 1 6 D54SX11S C/F C/F

54 480 81.0 3 3 D54SX5S C4-152 C4-153 205 (93) 27 7 / 8 (708.0) 20

235 (107) 27 7 / 8 (708.0) 20 235 (107) 27 7 / 8 (708.0) 20

60 240 90.0 3 5 D60SX3S C/F C/F 60 480 90.0 1 4 D60SX11S C/F C/F

60 480 90.0 3 4 D60SX5S C4-156 C4-157 235 (107) 27 7 / 8 (708.0) 20

260 (118) 32 7 / 8 (835.0) 25 260 (118) 32 7 / 8 (835.0) 25

60 240 115.0 3 10 D75SX3S C/F C/F 60 480 115.0 1 5 D75SX11S C/F C/F

60 480 115.0 3 4 D75SX5S C4-156 C4-157 260 (118) 32 7 / 8 (835.0) 25 (635) 20 3 / 4 (527) 24 1 / 2 (622) 21 (533) 23 3 / 4 (603) 5 3 / 4 (146) 60 480 150.0 3 4 D100SX5S C4-156 C4-157 290 (132) 40 3 / 8 (1025.5) 32 1 / 2 (826) 20 3 / 4 (527) 24 1 / 2 (622) 21 (533) 23 3 / 4 (603) 5 3 / 4 (146) 60 480 190.0 3 5 D125SX5S C/F C/F 310 (141) 49 3 / 8 (1254.1) 41 1 / 2 (1054) 20 3 / 4 (527) 24 1 / 2 (622) 21 (533) 23 3 / 4 (603) 5 3 / 4 (146)

Notes: • See Watt Density vs. Air Temperature/Velocity charts on page 379 to confirm suitability in the application.

C/F - Contact factory, go to www.watlow.com/en/contact-us

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