Page 1
MEDIUM & HEAVY
WEIGHT OIL APPLICATIONS
Dimensions: inches
NWHMTOR Series
Integral Thermostat
3/4" Conduit Opening
1" Pipe Outlet
9-1/4
U 21⁄2 NPT Steel
Screw Plug Design
1
⁄2" Carbon Steel
U 2
Pipe Body, 150 lb
Construction
U 1 to 9 kW
U 120, 240 and 480V,
1 & 3 Phase
U General Purpose,
Moisture Resistant/
Explosion Resistant
or Moisture Resistant
Terminal Enclosure
U Three 0.475" Dia. Steel
Sheath Low Watt Density
Elements (15 W/in
2
)
U Integral Thermostat
(60 to 250°F)
U UL, CSA and Other Third
Party Approval, Listing
or Certification Available
APPLICATIONS
Medium and Heavy Weight Oil:
Low watt density elements reduce
the risk of dam ag ing highly viscous
fluids.
FEATURES
Terminal Enclosure:
E1 General Purpose is standard.
E2 Moisture Resistant/Explosion
Resistant or E4 Moisture Resistant
Enclosures available.
Elements:
Three steel sheath elements.
Screw Plug: 21⁄2 NPT Steel
screw plug with 1⁄2" thermowell for
thermostat bulb.
Vessel: Pipe body and nozzles
are ASTM A53B carbon steel pipe.
The end disk is ASTM A516 Grade
70 carbon steel plate. Provided with
thermal insulation and painted sheet
metal jacket.
Wiring:
Convenient field wiring terminals
are provided for easy installation.
Controls: Stock and assembly
stock heaters come equipped
with integral thermostat.
3
2 Mtg. Lugs Ea.
with two 3/8" 16x1-1/2" Deep
Holes on 1-1/4"
Centers
1" Pipe Inlet
3/8" NPT Pipe Plug
Note — Add 2" to A dimension for E2
Enclosure.
B
7
A
C
NWHMTOR-03-001P-E1/120
shown smaller
than actual size.
To Order
Ckt & Wt.
kW Volts Phase A B C Model No. (lb)
1 120 1-1 215⁄8 93⁄8 —
1 240 1-1 215⁄8 93⁄8 — NWHMTOR-03-001P-E1/240 10
1 240 1-3 215⁄8 93⁄8 — NWHMTOR-03-001P-E1/240/3P 10
1 480 1-3 215⁄8 93⁄8 — NWHMTOR-03-001P-E1/480/3P 10
3 240 1-1 343⁄4 221⁄2 161⁄2 NWHMTOR-03-003P-E1/240 22
3 240 1-3 343⁄4 221⁄2 161⁄2 NWHMTOR-03-003P-E1/240/3P 22
3 480 1-1 34
3 480 1-3 34
5 240 1-1 571⁄2 451⁄4 391⁄4 NWHMTOR-03-005P-E1/240 40
5 240 1-3 571⁄2 451⁄4 391⁄4 NWHMTOR-03-005P-E1/240/3P 40
5 480 1-1 571⁄2 451⁄4 391⁄4 NWHMTOR-03-005P-E1/480 40
5 480 1-3 57
7.5 240 1-1 68
7.5 240 1-3 681⁄4 56 50 NWHMTOR-03-07P5-E1/240/3P 48
7.5 480 1-1 681⁄4 56 50 NWHMTOR-03-07P5-E1/480 48
7.5 480 1-3 681⁄4 56 50 NWHMTOR-03-07P5-E1/480/3P 48
9 240 1-1 79
9 240 1-3 79
9 480 1-1 791⁄4 67 61 NWHMTOR-03-009P-E1/480 54
9 480 1-3 791⁄4 67 61 NWHMTOR-03-009P-E1/480/3P 54
Ordering Example: NWHMTOR-03-005P-E1/240, 5 kW, 1 phase, 240V heater.
Ordering
Information
To Order —
Complete the
Model Number
using the Matrix
provided.
Dimensions: in
NWHMTOR-03-001P-E1/120 10
3
⁄4 221⁄2 161⁄2 NWHMTOR-03-003P-E1/480 22
3
⁄4 221⁄2 161⁄2 NWHMTOR-03-003P-E1/480/3P 22
1
⁄2 451⁄4 391⁄4 NWHMTOR-03-005P-E1/480/3P 40
1
⁄4 56 50 NWHMTOR-03-07P5-E1/240 48
1
⁄4 67 61 NWHMTOR-03-009P-E1/240 54
1
⁄4 67 61 NWHMTOR-03-009P-E1/240/3P 54
Model Medium and Heavy Weight Oil
NWHMTO Oil Circulation Heater with Screw Plug
R Low Watt Density Elements
Code Number of Elements
03 Three
Code kW
003P 3 07P5 7.5
04P5 4.5 009P 9
006P 6
Code Terminal Enclosure
E1 General Purpose
E2 Moisture Resistant/
Explosion Resistant
E4 Moisture Resistant
NWHMTOR 03 003P E1 Typical Model Number
G
G-18
Loading...