ASB Heating Elements Ltd. 2 1_2” NPT Screw Plug Immersion Heater User Manual
Npt screw plug immersion heater, Three element design - one or three phase only
2
1
/
2
” NPT Screw Plug Immersion Heater
Three element design - one or three phase only
B7
5
1/4"
ap
pro
x.
2
3/4"
1
1/4"
NPT opening
5
1/4"
4
1/4"
dia.
3"
ap
pro
x.
2
5/16"
1" NPT opening
4
1/2"
3
1/2"
dia.
Figure 90
5
5/16
"
ap
pro
x.
3
13/16
"
1
1/2"
NPT opening
6
13/16"
5
3/4"
dia.
2
13/16"
3
1/2"
4
1/4"
4
3/4"
4
5/16"
4
1/4"
Standard (SP series)
General Purpose Enclosure - no thermostat
With thermostat (ASP series)
General Purpose Enclosure - with thermostat
Moisture Resistant or Hazardous Location
Moisture Resistant or Hazardous Location - ASP series
with any optional thermostat
Moisture Resistant Enclosure (add suffix MR)
Hazardous Location (Explosion Resistant add suffix ER)
Non-Thermostat version - (NEMA 4 or NEMA 7)
Moisture Resistant Enclosure (add suffix MR)
Hazardous Location (Explosion Resistant add suffix ER)
DPST or TPST
(NEMA 4 or NEMA 7)
10 - 120°C (50 - 250°F)
240 vac, 25 amp, SPST
Figure 87
Figure 88
Figure 89
Optional Thermostats
Available temperature ranges and/or electrical choices
Temperature ranges
Electrical ranges
-16 to + 40°C (0-100°F)
240 vac, 25 amp, DPST
70 - 280°C (160 - 540°F)
480 vac, 15 amp, TPST
160 - 370°C (320-700°F)
600 vac, 15 amp, TPST
ASP series
Built-in Thermostat SPST
(NEMA 4 or NEMA 7)
SP series
50-60 watts/in
2
Copper Sheath
Typically to heat:
2
1
/
2
” brass screw plug
municipal water
3 elements - up to 600 volts, 1 or 3 phase
(specifiy voltage and phase when ordering)
watts
immersed
catalogue number
net
length
Fig. 87
Fig. 88
weight
B dim.
standard
with thermostat
(lb)
2250
6
1
/
2
SPC-3022
ASPC-3022
6
3000
7
1
/
2
SPC-3030
ASPC-3030
6
3750
9
1
/
2
SPC-3037
ASPC-3037
6
4500
11
1
/
2
SPC-3045
ASPC-3045
7
6000
17
3
/
4
SPC-3060
ASPC-3060
7
7500
19
SPC-3075
ASPC-3075
7
9000
24
1
/
2
SPC-3090
ASPC-3090
8
10500
28
SPC-3105
ASPC-3105
8
12000
32
1
/
2
SPC-3120
ASPC-3120
9
15000
39
3
/
8
SPC-3150
ASPC-3150
9
18000
47
1
/
4
SPC-3180
ASPC-3180
10
22500
54
SPC-3225
ASPC-3225
10
watts
immersed
catalogue number
net
length
Fig. 87
Fig. 88
weight
B dim.
standard
with thermostat
(lb)
2250
6
1
/
2
SPI-3022
ASPI-3022
6
3000
7
1
/
2
SPI-3030
ASPI-3030
6
3750
9
1
/
2
SPI-3037
ASPI-3037
6
4500
11
1
/
2
SPI-3045
ASPI-3045
7
6000
17
3
/
4
SPI-3060
ASPI-3060
7
7500
19
SPI-3075
ASPI-3075
7
9000
24
1
/
2
SPI-3090
ASPI-3090
8
10500
28
SPI-3105
ASPI-3105
8
12000
32
1
/
2
SPI-3120
ASPI-3120
9
15000
39
3
/
8
SPI-3150
ASPI-3150
9
18000
47
1
/
4
SPI-3180
ASPI-3180
10
22500
54
SPI-3225
ASPI-3225
10
watts
immersed
catalogue number
net
length
Fig. 87
Fig. 88
weight
B dim.
standard
with thermostat
(lb)
2250
6
1
/
2
SPS-3022 ASPS-3022 6
3000
7
1
/
2
SPS-3030 ASPS-3030 6
3750
9
1
/
2
SPS-3037
ASPS-3037 6
4500
11
1
/
2
SPS-3045
ASPS-3045 7
6000
17
3
/
4
SPS-3060
ASPS-3060 7
7500
19
SPS-3075 ASPS-3075 7
9000
24
1
/
2
SPS-3090
ASPS-3090 8
10500
28
SPS-3105 ASPS-3105 8
12000
32
1
/
2
SPS-3120
ASPS-3120 9
15000
39
3
/
8
SPS-3150
ASPS-3150 9
18000
47
1
/
4
SPS-3180
ASPS-3180 10
22500
54
SPS-3225 ASPS-3225 10
50-60 watts/in
2
Incoloy Sheath
Typically to heat:
2
1
/
2
”stainless steel screw plug
municipal water
3 elements - up to 600 volts, 1 or 3 phase process water
(specifiy voltage and phase when ordering)
50-60 watts/in
2
SS Sheath
Typically to heat:
2
1
/
2
”316 SS screw plug
food processing
3 elements - up to 600 volts, 1 or 3 phase de-ionized water
(specifiy voltage and phase when ordering)
mild acid solution
Figure 91