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RENEWAL PARTS IDENTIFICATION
2-1/2" Pipe
Outlet
3/4-10 Tap
Mounting
B
Lugs
2-1/2" Pipe
Inlet
FIRE/EXPLOSION HAZARD. This heater is not intend-
ed for use in hazardous atmospheres where flamma-
ble vapors, gases, liquids or other combustible atmos-
pheres are present as defined in the National
Electrical Code. Failure to comply can result in per-
sonal injury or property damage
The NWHO(F)-18 series is a general purpose regular and fuel
oil solution circulation heater intended for use indoors.
The steel-sheathed tubular elements are centered in a steel
heating chamber and sealed into a removable steel flange. The
assembly is surrounded by insulation and a sheet metal jacket.
© 2010 Chromalox, Inc.
Chromalox
Installation, Operation
and
NWHO(F)-18 Circulation Heaters
(for Regular and Fuel Oil Heating)
15-1/8"
C
®
REFERENCE
Specifications — Table A
Model
NWHO-1830R15
NWHO-1840R15
A
NWHO-1850R15
NWHO-1860R15
NWHO-1870R15
NWHO-1880R15
NWHO-1820F15
NWHO-1825F15
NWHO-1830F15
NWHO-1835F15
NWHO-1840F15
NWHO-1845F15
GENERAL
Depending upon the order specifications, the NWHO(F)-18
may or may not be factory equipped with an AR or other
Chromalox thermostat. Such thermostats function to control outlet
temperatures and to limit internal temperatures under abnormal
flow conditions. These controls do not fail-safe.
The system designer is responsible for the safety of
this equipment and should install adequate back-up
controls and safety devices with their electric heating
equipment. Where the consequences of failure could
result in personal injury or property damage, back-up
controls are essential.
SERVICE REFERENCE
4
DIVISION
SECTION
SALES
(Supersedes PE426-1)
JANUARY, 2003
DATE
Regular Oil Heaters
Volts
Phase
kW
W/In
2
L L
240 or 480
3
30
20
L L
240 or 480
3
40
20
L L
240 or 480
3
50
20
L L
240 or 480
3
60
20
L L
240 or 480
3
70
20
L L
240 or 480
3
80
20
Fuel Oil Heaters
L L
240 or 480
3
20
12
L L
240 or 480
3
25
12
L L
240 or 480
3
30
12
L L
240 or 480
3
35
12
L L
240 or 480
3
40
12
L L
240 or 480
3
45
12
NWHO
PE426-2
161-058063-001
Dimensions (In.)
A
B
C
53-7/8
32-11/16
29-3/16
60-7/8
39-11/16
36-3/16
68-1/2
47-5/16
43-13/16
78
56-13/16
53-5/16
87
65-13/16
62-5/16
97
75-13/16
72-5/16
53-7/8
32-11/16
29-3/16
60-7/8
39-11/16
36-3/16
68-1/2
47-5/16
43-13/16
78
56-13/16
53-5/16
87
65-13/16
62-5/16
97
75-13/16
72-5/16
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Related Manuals for Chromalox PE426-2
Summary of Contents for Chromalox PE426-2
- Page 1 Depending upon the order specifications, the NWHO(F)-18 may or may not be factory equipped with an AR or other Chromalox thermostat. Such thermostats function to control outlet temperatures and to limit internal temperatures under abnormal flow conditions. These controls do not fail-safe.
- Page 2 Thermostat Figure 1 – 240V 3-3 ø Δ Note: Dotted lines indicate “customer furnished.” However, thermostat may be furnished by Chromalox if so specified on the order. INSTALLATION 4. By using a slotted mounting assembly on either of the lugs, the heater chamber will be permitted to expand with increasing tem- perature.
- Page 3 FIRE/EXPLOSION HAZARD. Do not exceed the Pressure-Temperature rating of the flange as listed in ANSI B16.5. IMPORTANT: It is the responsibility of the purchas- er of the heater to make the ultimate choice of sheath material based upon his knowledge of the chemical composition of the corrosive solution, character of the materials entering the solution, and controls which he maintains on the process.
- Page 4 Limited Warranty: Please refer to the Chromalox limited warranty applicable to this product at http://www.chromalox.com/customer-service/policies/termsofsale.aspx. 2150 N. RULON WHITE BLVD., OGDEN, UT 84404 TA - U0 - EF Phone: 1-800-368-2493 www.chromalox.com Litho in U.S.A.