1
3
5
7
8
4
6
2
Safety Switch
Service Wires
Fan
GND
1
3
5
7
8
4
6
2
Safety Switch
Service Wires
Fan
GND
1
3
5
7
8
4
6
2
Safety Switch
Service Wires
Fan
GND
Factory Connection
208/240V
675/900W
May be field
120V
450, 900,
reconnected to
1350, 1800W
208/240V
1350/1800W
Electrical Inspection —
Remove grille, screen and frame by removing screws “A”.
Remove screws “C” at front of junction box. The junction box cover
can now be removed through the front opening, and field wiring can
be observed. When re-assembling, reverse the procedure above.
Cleaning —
WARNING:
Hazard of Severe Shock. Disconnect all
power to heater before servicing.
With Grille in Place :
Use vacuum cleaner hose to suck out lint and dirt around grille.
Reverse hose on vacuum to use as a blower to move dust out of enclo-
sure. Reverse hose back to suck out dirt at front area of heater.
With Grille Removed :
Remove two screws “B” at bottom front of heating element assembly.
Pull gently on assembly to remove it from the enclosure. Swing assem-
bly out. Vacuum inside of enclosure and around heating element
assembly. Reverse procedure above to re-assemble unit.
Note 1:
Care must be taken to prevent undue strain on all wiring or
heating element assembly, when removing and re-assembling
heating element assembly.
Note 2:
For field rewiring to 120V, all leads must be secured under
wire clamps.
Note 3:
Air and grille temperatures may discolor certain materials,
particularly those materials incorporating clear vinyl.
Materials should be checked prior to installation to determine
if discoloration or distotion would occur in the vicinity of
140˚F (60˚C).
2150 N. RULON WHITE BLVD., OGDEN, UT 84404
Phone: 1-800-368-2493 www.chromalox.com
MAINTENANCE
WARNING:
Hazard of Severe Shock. Disconnect all
power to heater before servicing or replacing heaters.
Normal maintenance requires only an occasional vacuuming using
standard vacuum attachments.
WARNING:
Do not block air flow in any way with
drapes, rugs or other objects.
REPLACEMENT PARTS
For replacement parts, please consult with the Product Service Center listed below.
22-3/8"
3-5/8"
3-1/2"
22"
9-1/2"
3"
Max
Knockouts
Service Cable
10" Min
Ceiling
Grille
Heater
Cabinet Door
Partition or
Added Support
3/4"
Min
Figure 3
Figure 2
Figure 1
Top Label
Heater Cover
Junction Box Cover
Screw “C”
Screw “A”
Trim Frame
Grille
Screw “B”
Heater Element
IMPORTANT:
Retighten all leads with cable
clamp after reconnecting uninsulated ends
of unused leads with wire nuts.
Rating
Connect
450W 3.75A
7-8 (As Shown)
900W 7.5 A
7-8, 1-2
1350W 11.2A
7-8, 1-2, 3-4
1800W 15A
7-8, 1-2, 3-4, 5-6
208/240 Volt 675/900 Watts
(Factory Connection) 3.2A/3.7A
208/240 Volt 1350/1800 Watts
(Field Connection) 6.5A/7.5A
120V (Field Connection)
Figure 4
Limited Warranty:
Please refer to the Chromalox limited warranty applicable to this product at
http://www.chromalox.com/customer-service/policies/termsofsale.aspx.
