Chromalox Electric Heater PF421 6 User Manual

Installation, Operation  
4
EH-HVT  
and  
(Supersedes PF421-5)  
PF421-6  
161-048557-001  
RENEWAL PARTS IDENTIFICATION  
APRIL, 2003  
Type EH and HVT Electric Utility Heater  
63/  
4
33/  
4
A (EH)  
Type EH  
A (HVT)  
Thermostat  
(HVT Only)  
Specifications – Table A  
Dim. “A”  
Model  
VoltS  
120  
240  
120  
240  
120  
120  
WattS  
250  
(In.)  
145/  
145/  
145/  
145/  
285/  
285/  
BTUH  
853  
EH-1221  
EH-1221  
EH-1251  
EH-1251  
HVT-1251*  
HVT-2411*  
8
250  
8
853  
Type HVT*  
500  
8
1706  
1706  
1706  
3412  
500  
8
500  
8
NOTICE: Carefully remove heater from carton and check for  
shipping damage. Any damage claims should be entered  
immediately with the carrier.  
1000  
8
*HVT models are equipped with a 55°F to 110°F adjustable thermostat.  
GENERAL  
D. Keep all combustible materials a minimum of 4” from front and  
top of heater.  
FIRE HAZARD. Since heaters are capable of devel-  
oping high temperatures, extreme care should be  
taken to:  
A. Locate on vertical wall with length of heater positioned horizon-  
tally. HVT models must be installed with thermostat at right end;  
B. Avoid mounting into a wall recess since such mounting interferes  
with free air circulation, increases heater temperatures, and pre-  
vents proper thermostat operation on HVT models;  
1. Remove screw from each end and remove perforated cover.  
2. After feeding electrical wiring through opening in back of heater  
(See WIRING section), mount back of heater to wall with four  
screws (HVT models-5/16” diameter holes on 5” x 25-7/8”) (EH  
models 9/32” diameter holes on 5x12-1/2” centers) through back  
of heater. Leave one pair of end screws snug, but not tight, to avoid  
expansion noise due to binding.  
C. Mount heaters with a minimum clearance of 24” above floor level  
or from adjacent wall;  
© 2010 Chromalox®, Inc.  
 
RENEWAL PARTS IDENTIFICATION  
Heating Elements  
Front  
Terminal  
Thermostat Kit  
(See Below)  
Model  
Watts  
250  
Cover  
120V  
240V  
Block  
EH-1221  
EH-1251  
HVT-1251  
HVT-2411  
080-016362-002  
080-016362-002  
080-016362-003  
080-016362-003  
285-051049-001  
285-051049-001 (2)  
285-051049-006  
285-051049-006 (2)  
285-051049-002  
285-051049-002 (2)  
500  
500  
303-047610-005  
303-047610-005  
168-073659-001  
168-073659-001  
1000  
Note: Part numbers suffixed by a number in ( ) indicates the quantity of same part number used.  
THERMOSTAT REPLACEMENT PROCEDURE  
Thermostat Kit (168-073659-001)  
See Instruction #1  
Item  
2
No.  
Qty.  
1
Part No.  
Description  
Thermostat  
1
2
3
4
5
6
300-072275-007  
027-073304-002  
248-048179-020  
220-072276-003  
169-073294-001  
056-073305-001  
1
Bracket — Mounting  
Screws  
3
2
1
1
Plate-Dial Thermostat  
Knob  
1
1
Clamp — Capillary Bulb  
Thermostat Replacement Instructions:  
1. Remove cover.  
2. Slide thermostat mounting bracket over existing plate.  
3. Using item 3 (screws) assemble item 1 (thermostat) to item 2 (bracket).  
4. Remove bolt and assemble item 6 capillary clamp and capillary bulb and  
re-install bolt. Note: Do not pinch bulb in clamp, thermostat decalibration  
will result.  
5. Assemble item 4 (plate) and item 5 (knob).  
6. Re-install cover.  
5
4
6
See Instruction #4  
3
 
Limited Warranty:  
Please refer to the Chromalox limited warranty applicable to this product at  
2150 N. RULON WHITE BLVD., OGDEN, UT 84404  
Phone: 1-800-368-2493  
 

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