DIVISION
4
SECTION
UB
SALES
REFERENCE
DATE
SERVICE REFERENCE
Installation, Operation
and
RENEWAL PARTS IDENTIFICATION
PF416-13
JULY, 2002
(Supersedes PF416-12)
161-048444-001
MOUNTING
© 2010 Chromalox
®
, Inc.
UB-502D and UB-752D
Forced-Air Heaters
WARNING:
Hazard of Electric Shock. Disconnect all
power before installing heater.
Note:
These heaters are designed for wall or ceiling mounting
only. Other modes of mounting voids factory warranty.
1.
Height above floor
A.
In areas where ceiling height is more than 12 feet, recom-
mended mounting height is approximately 10 feet to under-
side of heater.
B.
For ceiling heights of 12 feet or less, maximum mounting
height is determined by use of ceiling mounting brackets
offered for these heaters. Minimum spacing to ceiling is 3”
(see Figure 2).
C.
In either case, minimum mounting height is 7 feet from
floor to bottom of heater. (See Figures 1 and 2.)
2.
Spacing to adjacent walls
A.
Rear of case to back wall 4-7/8” minimum (see Figure 2).
B.
Side of case to side wall 6” minimum (see Figure 2).
3.
If two or more units are operated in the same enclosed space,
their discharges should be directed to aid in development of
mass air movement for uniform heat dispersal.
4.
Controlling thermostats to individual heaters should be
mounted at shoulder height on inside walls or columns.
‡ Model Numbers with suffix “T” added (480 volts only) are equipped with a transformer, 480V Primary — 120/240V Secondary.
‡ Model Numbers with suffix “R” added are equipped with a relay.
Horizontal
Model
Voltage and Phase
kW
Air Discharge
(Ft.)
UB-502D
120 (1ø); 208, 240 or 480 (1ø or 3ø)
5
12.5
UB-502D-R
208, 240 or 480 (1ø or 3ø)
5
12.5
UB-752D
120 (1ø); 208, 240 or 480 (1ø or 3ø)
7.5
13
UB-752D-R
208, 240 (3ø); 480 (1ø or 3ø)
7.5
13
Specifications —
Dimensions —
Rubber Feet Provided for
Wall Mount Units Only.
7/8” and 1-13/32”
Dia. Holes in Rear
11-5/8”
13-5/8”
17-3/16”
8-7/8”
7-9/16”
For Lower Height
from Ceiling:
Customer to add
Extension Strap.
11-7/8”
8”
6”
7’-0” Min. Height
Above Floor
Figure 1
Mounting UB using ceiling
mounting brackets*
Ceiling Line
Wall
Back
Wall
6” Min. Spacing to
Adjacent Wall
3”
4-7/8”
8-7/8”
15-9/16”
7’-0” Min. Height
Above Floor
Mounting
Holes
Center
8”
6”
Figure 2
Mounting UB using wall
mounting brackets*
*Wall and/or Ceiling Mounting Brackets are
available as an accessory option — Contact
local sales representative.
