Chromalox PG421-1 Electric Heater User Manual


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PG421-1
U-RAD
161-058006-001
APRIL, 2005
4
and
Installation, Operation
RENEWAL PARTSIDENTIFICATION
(Supersedes PG421)
Type U-RAD-LT Electric Radiant Heaters
© 2010 Chromalox, Inc.
Housing
Mounting
Clamp
Assembly
Terminal Box
Cover
Terminal Box
Element
Polished Aluminum Reflector
Figure 1 — Heater Parts and Dimensions
Before Installing
1. Open carton and remove heater at the place of installation.
Mounting clamps are in parts bag in carton.
2. Check nameplate volt and watt rating against your power sup-
ply voltage and heating requirements of your installation. This
nameplate is located on one end of the heater.
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 conse-
quences of failure could result in personal injury or
property damage, back-up controls are essential.
Double Element U-RAD-LT
Single Element U-RAD-LT
AB
Overall Heated
Model Volts Watts Length (In.) Length (In.)
Single U-Shaped Element
U-RAD-2LT 120 or 240
0800 13
5
/16 8
7
/16
U-RAD-2VLT 208 or 275
U-RAD-3LT 120 or 240
1100 16
7
/16 11
5
/16
U-RAD-3VLT 208 or 275
U-RAD-4VLT 208 or 275
1800 24
3
/8 19
3
/8
U-RAD-4LT 240 or 480
U-RAD-5VLT 208 or 275
2500 31
13
/16 26
13
/16
U-RAD-5LT 240 or 480
U-RAD-6VLT 208 or 275
3000 37
13
/16 32
13
/16
U-RAD-6LT 240 or 480
U-RAD-7VLT 208 or 275
3600 43
15
/16 38
15
/16
U-RAD-7LT 240 or 480
Two U-Shaped Elements
U-RAD-22LT 120 or 240
1600 26
1
/8 16
5
/8
U-RAD-22VLT 208 or 275
U-RAD-32LT 120 or 240
1900 29
1
/4 19
3
/4
U-RAD-32VLT 208 or 275
U-RAD-33LT 120 or 240
2200 32
3
/8 22
7
/8
U-RAD-33VLT 208 or 275
U-RAD-42VLT 208 or 275
2600 37
1
/8 27
11
/16
U-RAD-42LT 240
U-RAD-43VLT 208 or 275
2900 40
1
/4 30
13
/16
U-RAD-43LT 480
U-RAD-44VLT 208 or 275
3600 48
1
/8 38
3
/4
U-RAD-44LT 240 or 480
U-RAD-52VLT 208 or 275
3300 44
5
/8 35
1
/8
U-RAD-52LT 240
U-RAD-53VLT 208 or 275
3600 47
3
/4 38
1
/4
U-RAD-53LT 240
U-RAD-54VLT 208 or 275
4300
55
5
/8 46
3
/16
U-RAD-54LT 240 or 480
U-RAD-55VLT 208 or 275
5000 63
1
/8 53
5
/8
U-RAD-55LT 240 or 480
U-RAD-62VLT 208 or 275
3800 50
9
/16 41
1
/8
U-RAD-62LT 240
U-RAD-63VLT 208 or 275
4100 53
11
/16 44
1
/4
U-RAD-63LT 240
U-RAD-64VLT 208 or 275
4800 61
9
/16 52
3
/16
U-RAD-64LT 240 or 480
U-RAD-65VLT 208 or 275
5500 69
1
/16 59
5
/8
U-RAD-65LT 240 or 480
U-RAD-66VLT 208 or 275
6000 75 65
5
/8
U-RAD-66LT 240 or 480
U-RAD-72VLT 208 or 275
4400 56
11
/16 47
1
/4
U-RAD-72LT 240
U-RAD-73VLT 208 or 275
4700 59
13
/16 50
3
/8
U-RAD-73LT 240
U-RAD-74VLT 208 or 275
5400 67
11
/16 58
5
/16
U-RAD-74LT 240 or 480
U-RAD-75VLT 208 or 275
6100 75
3
/16 65
11
/16
U-RAD-75LT 240 or 480
U-RAD-76VLT 208 or 275
6600 81
7
/16 72
1
/16
U-RAD-76LT 240 or 480
U-RAD-77VLT 208 or 275
7200 87
1
/4 77
7
/8
U-RAD-77LT 240 or 480
Specifications Table —
A
B
3
11
/16”
4
1
/4” Dia.
(Typ.)
B
A
3
/4” Pipe Tap on
Back Side of
Heater (Typ.)
The Safety Alert Symbol is used to indicate a risk of per-
sonal injury.
Please familiarize yourself with these instructions before
attempting to install or operate this Radiant Heater.
!
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