Chromalox Water Heater PE404 8 User Manual

Installation, Operation  
4
NWH  
and  
(Supersedes PE404-7)  
PE404-8  
RENEWAL PARTS IDENTIFICATION  
161-048467-001  
APRIL, 2005  
NWH-JR Circulation Heater For Water Heating  
Specifications – Table A  
Dimensions (In.)  
Watt  
Model  
Volts  
kW  
Density  
A
B
Galvanized Iron Construction  
NWHJRG-01-01P5-E1  
NWHJRG-01-002P-E1  
NWHJRG-01-02P5-E1  
NWHJRG-01-003P-E1  
Brass Construction  
120  
1.5  
2
82  
83  
78  
78  
18  
22  
12-3/8  
16-3/8  
or  
2.5  
3
240  
NWHJRB-01-01P5-E1  
NWHJRB-01-002P-E1  
NWHJRB-01-02P5-E1  
NWHJRB-01-003P-E1  
120 or  
240  
1.5  
2
82  
83  
78  
78  
18  
22  
12-3/8  
16-3/8  
240  
2.5  
3
240  
Figure 1  
GENERAL  
provides easy removal when necessary. The assembly is surround-  
ed by insulation and a sheet metal jacket.  
An integral 60-180°F range thermostat is provided to control  
outlet temperatures. However, this control does not fail-safe.  
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 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.  
The NWH-JR is a compact water circulation heater ideally  
suited for use as an engine coolant water heater and for many other  
uses where on-the-spot hot water is required.  
The copper-sheathed tubular heating element is centered in a  
galvanized iron or brass pipe body. Its screw-plug type mounting  
INSTALLATION  
3. If foreign material is to be carried by the liquid flow, install suit-  
able filters in the inlet pipe to the heater.  
4. Provide adequate space at terminal end to permit withdrawal of the  
heater from chamber should servicing be required.  
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  
FIRE HAZARD. Since heaters are capable of develop-  
ing high temperatures, extreme care should be taken  
to:  
1. The NWH-JR circulation heater should be mounted vertically with  
the terminal enclosure at the top. No additional support other than  
the connecting pipes is needed.  
A. Provide a minimum of 6” spacing from chamber and related  
piping to nearest combustible material.  
2. Make piping connections to either new or existing plumbing at the  
B. Do not heat combustible materials.  
1 x 11-1/2” NPT threaded inlet and outlet as shown above.  
© 2010 Chromalox, Inc.  
 

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