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ELECTRIC SHOCK HAZARD. Disconnect all power
before installing or servicing heater. Failure to do so
could result in personal injury or property damage.
Heater must be installed by a qualified person in accor-
dance with the National Electrical Code, NFPA 70.
ELECTRIC SHOCK HAZARD. Any installation involving
electric heaters must be performed by a qualified per-
son and must be effectively grounded in accordance
with the National Electrical Code to eliminate shock
hazard.
1. Be sure line voltage matches heater voltage (on nameplate).
2. Electric wiring to heater must be installed in accordance with the
National Electrical Code and local codes by a qualified person as
defined in the NEC.
3. Remove terminal cover by backing out screw in center of cover
and feed wires through BX mounting bracket. (See Table B for rec-
ommended wire size.)
4. Connect one wire to the unused heater terminal and one to the
unused thermostat terminal.
Note: Do not disturb the existing jumper wire. (See Figure 2.)
5. To set thermostat, turn the slotted
screw at top of thermostat counter-
clockwise until flat side is facing ter-
minals. This is the “OFF” position.
Next, turn the slotted screw clock-
wise until slot in screw points to the
desired temperature shown on scale.
Note: Scale is marked in increments
of 10°
TA - R5 - EF
Litho in U.S.A.
2150 N. RULON WHITE BLVD., OGDEN, UT 84404
Phone: 1-800-368-2493 www.chromalox.com
WIRING
OPERATION
1. Do not heat solutions that are corrosive to the heating element
sheath or the heating chamber.
2. Terminal ends of heater must be protected from drippings, con-
densation, spray or direct spill-over of material. Their presence at
the terminals may damage heater electrical insulation. Liquid-tight
terminal enclosures are available to protect heater. Check Factory.
3. Do not allow heater to operate when liquid flow is interrupted.
MAINTENANCE
ELECTRIC
SHOCK HAZARD. Disconnect all power
before installing or servicing heater. Failure to do so
could result in personal injury or property damage.
Heater must be installed by a qualified person in accor-
dance with the National Electrical Code, NFPA 70
.
1. Remove heating element assembly periodically to check heater
sheath for scaling, corrosion or excessive oxidation. Correct oper-
ating conditions to minimize sheath deterioration.
2. Periodically check temperature control operation to insure accurate
and safe process operation.
3. Check all electrical connections periodically and retighten connec-
tions which may have loosened in service. Replace wire and wire
terminals which show signs of oxidation which would interfere
with establishment of reliable electrical connections.
Figure 2
Recommended
Model Volts Watts Wire Size
NWHJR (G & B)
120 or
1500 14
240
NWHJR (G & B)
120
2000
12
240 14
NWHJR (G & B)
120
2500
10
240 14
NWHJRG 120 3000 8
NWHJR (G & B) 240 3000 14
RENEWAL PARTS IDENTIFICATION
HEATING ELEMENT SUB ASSEMBLIES
120V 240V 120V 240V 120V 240V 120V 240V Terminal
1500W 1500W 2000W 2000W 2500W 2500W 3000W 3000W Thermostat Cover
156-018184-013 156-018184-014 156-018184-015 156-018184-016 156-018184-017156-018184-018156-043029-002 156-043029-001 300-019560-002 306-019080-004
Wire Size – Table B
Limited Warranty:
Please refer to the Chromalox limited warranty applicable to this product at
http://www.chromalox.com/customer-service/policies/termsofsale.aspx.