SERVICE REFERENCE
Installation Instructions
DIVISION
SALES
4
SECTION VUH
and
REFERENCE
(Supersedes PF450-4)
PF450-5
RENEWAL PARTS IDENTIFICATION
161-057822-001
DATE
JULY, 2002
VUH Vertical Unit Heater
12" Min.
30" Min.
8-1/2"
3-7/8"
4-11/16" Dia.
Mounting
Holes
Drop
Ceiling
17"
Anemostat**
Diffuser
Position With
Junction Box
Facing Away
From Walls
Note:
30" Min.
Knockout Location
See Table 2
For Easy Access
4-11/16" Dia.
Mounting
Holes
A
12" Min.
E
For Recommended
Conduit Size.
F
H
Approx.
D
B
M
4-11/16" Dia.
Mounting Holes
7' Min.
To Floor
C
L
Warm Air
Discharge
C
Figure 2
Figure 1
Volts
Specifications — Table 1
Heating Capacity
Model
Air Delivery Data
Dimensions (In.)
Max.
Mtg.
Height
(Ft.)
Mtg.
Weight
(Lbs.)
1
3
Outlet
kW
BTUH
CFM
FPM
A
B
C
D
E
F
H
M
Phase Phase
Temp.˚F*
208
240
277
208
240
480
VUH-C-05
5
17,000
450
703
102
10
12
14
13-1/2
26
3-1/4
6-5/8
4
7-1/4 10-5/8
7-1/4 10-5/8
48
48
208
240
277
208
240
480
VUH-C-07 7.5
9.8
25,500
34,000
550
712
880
102
104
14
14
13-1/2
13-1/2
26
26
3-1/4
3-1/4
6-5/8
6-5/8
4
4
208
208
VUH-C-10
1160
14
7-1/4 10-5/8
48
10
240
277
240
480
* Based on 60˚F entering air.
** For use with drop ceiling only. Installation in a drop ceiling should be in accordance with NFPA-90A and Article 300-22 of (NEC).
*** For instructions on VUH units rated 15-25 kW refer to Bulletin PF451; VUH units rated 30-50 refer to Bulletin PF452.
© 2010 Chromalox®, Inc.
MAINTENANCE
5. Rough-in wiring to heater. See Table 2 for line amperes, rec-
8. Air diffusers for deflecting the air are optional. See Instruction
ommended wire size and conduit size.
Sheet PF449 for installation instructions.
6. Wire heater per wiring diagram supplied with this instruction
sheet.
Note: Power relay(s) are provided as standard on all heaters.
ELECTRIC SHOCK HAZARD. Disconnect all power
to heater before servicing or replacing heaters. Do
not attempt to service heater while unit is operat-
ing as there is hazard of electric shock, injury
from operating fan, and burns from hot heating
elements.
Prior to operating the heater, verify that the fan hub
setscrews are tightened and the push-on clip is
secured to assure that the fan blade is securely fas-
tened to the motor shaft. Failure to comply could
result in personal injury or property damage.
7. Carefully inspect the completed installation. Rotate the fan
blade by hand to be sure that it turns freely. Investigate any
binding, rubbing or interference.
1. Before activating for next heating season, vacuum or use com-
pressed air to remove accumulated dust or lint, which other-
wise may restrict proper air flow.
2. Periodically check all electrical connections and retighten to
avoid electrical wiring difficulties.
WIRING DIAGRAMS
Transformer Color Code Index
208 - 240V Motor
208 - 240V Motor
Hook-Up
277V Motor
Hook-Up
Customer Wiring
Factory Wire
277V Motor
Hook-Up
Hook-Up
Elements
PRI XFMR 120V SEC. 24V SEC.
Elements
BLU
BLK
VOLT LEAD CLRS LEAD CLRS
LEAD CLRS
BLU
BLK
M
M
H1
208 BLK
240 BLK
277 BLK
H2
X1
X2
X1 X2
BLK
BLK
T2
M
M
BLK
T1
BLK
T2
RED
ORG
BRN
BLK WHT YEL BLU
BLK WHT YEL BLU
BLK WHT YEL BLU
T1
WHT
RED
YEL
WHT
RED
YEL
480
BLK BLK/RED BLK WHT YEL BLU
480V Motor
Hook-Up
480V Motor
Hook-Up
Cutout
Cutout
RED
RED
BLK
T1
C1
T2 T3
T1
T2 T3
BLU
YEL
BLK
M
Contactor
BLU
YEL
Contactor
C1
M
L1 L2 L3
L1 L2 L3
WHT
WHT
X1
H1
X2
T2
T1
3ø Jumper
Hook-Up
T1
T2
XFMR
Fusing
Optional
3ø Jumper
Hook-Up
XFMR
To Contactor
To Contactor
1ø Jumper
Hook-Up
H2
Thermostat
(By Others)
C1 C2
TB2
1ø Jumper
Hook-Up
TB1
L1 L2 L3 T4
TB1
L1 L2 L3 T4
3ø
3ø
Power
60 HZ
C1 C2
TB2
Thermostat
(By Others)
Power
60 HZ
L1 L2 L3 T4
1ø Power
L1 L2 L3 T4
Control
Power
(By Others)
TB1
TB1
Fused Switch
(By Others)
Fused Switch
(By Others)
Customer Wiring
Factory Wire
1ø Power
Figure 3
Figure 4
Transformer Color Code Index
277V Motor
Hook-Up
208 - 240V Motor
Hook-Up
Customer Wiring
Factory Wire
277V Motor
PRI XFMR 120V SEC. 24V SEC.
208 - 240V
Hook-Up
Elements
Elements
Motor
VOLT LEAD CLRS LEAD CLRS
LEAD CLRS
BLK
BLU
Hook-Up
M
M
H1
208 BLK
240 BLK
277 BLK
H2
X1
X2
X1 X2
BLK
BLK
T2
BLU
BLK
RED
ORG
BRN
BLK WHT YEL BLU
BLK WHT YEL BLU
BLK WHT YEL BLU
BLK
BLK
T2
M
T1
M
T1
WHT
RED
YEL
WHT
RED
YEL
480
BLK BLK/RED BLK WHT YEL BLU
Customer Wiring
Factory Wire
480V Motor
Hook-Up
480V Motor
Hook-Up
Cutout
RED
RED
Contactor
T2
T3
Cutout
2 PDT Switch
(By Others)
Thermostat
(By Others)
BLK
BLK
T1
C1
T2 T3
BLU
YEL
T1
C1
L1
T1 T2 T3
L1 L2 L3
BLU
YEL
XFMR
M
M
Contactor
C3
X1
H1
X2
L1 L2 L3
L2 L3
WHT
WHT
T2
T2
T1
T1
3ø Jumper
Hook-Up
H2
Heat
3ø Jumper
Hook-Up
To Contactor
To Contactor
1ø Jumper
Hook-Up
1ø Jumper
Hook-Up
Fan
TB1
TB1
L1 L2 L3 T4
L1 L2 L3 T4
Thermostat
(By Others)
XFMR
Fusing
Optional
C1 C2
TB2
C4 TB2 TB2
C2 C1
3ø
Power
60 HZ
3ø
Power
60 HZ
L1 L2 L3 T4
1ø Power
L1 L2 L3 T4
1ø Power
TB1
TB1
Optional Heat Recovery Switch
(By Others)
Fused Switch
(By Others)
Fused Switch
(By Others)
Figure 6
Figure 5
208 - 240V
Motor
Hook-Up
Customer Wiring
Factory Wire
Elements
BLK
BLU
M
WHT
RED
YEL
Note: For 208-240V motor wiring, red and yellow motor wires to be connected at T2
terminal.
2 PDT Switch
(By Others)
T1
C1
L1
T2
T1 T2 T3
T3
Thermostat
(By Others)
MOTOR LUBRICATION
Contactor
Contactor
C3
L2 L3
L1
L2 L3
Motors in VUH-C-05 through VUH-C-10 have sleeve bearings which are factory lubri-
cated. Relubricate annually, if neccessary, with No. 10 non-detergent oil.
Heat
Fan
Cutout
TB2
To Contactor
Note: All fan motors are totally enclosed and internally thermal overload protected.
3ø Jumper
Hook-Up
1ø Jumper
Hook-Up
TB1
L1 L2 L3 T4
C4
C2 C1
3ø
Power
60 HZ
L1 L2 L3 T4
TB1
Optional Heat Recovery Switch
(By Others)
Fused Switch
(By Others)
1ø Power
Figure 7
RENEWAL PARTS IDENTIFICATION
MANUFACTURER PART NUMBER BREAKDOWN
(LOCATED ON UNIT NAMEPLATE)
V
U
H
C
Common Parts
Diagram
Item No.
Description
Part No.
5
6
Grille
134-130456-001
Overheat Cutout 300-024283-003
Controls
Elements, Motor and Fan
Element
Part No.
(Item No. 1)
Motor
Fan
Dia. Wiring
Item Dia.
No. Figure
Code
Code
Nos.
Part
Number
Wiring Diagram
Part No.
kW Volts Phase
Nos.
Part No.
Part No.
Description
(Item No. 2)
(Item No. 4)
05-81
05-83
05-21
05-23
05-71
05-43
07-81
07-83
07-21
07-23
07-71
07-43
10-81
10-83
10-21
10-23
10-71
10-43
1
3
1
3
1
3
1
3
1
3
1
3
1
3
1
3
1
3
Contactor-24V Coil (30A)
30-00 Contactor-24V Coil (50A)
Transformer
072-303180-001
072-303180-002
315-304252-002
072-303180-001
072-303180-002
072-303180-007
072-303180-008
315-304252-001
072-303180-007
072-303180-008
315-304252-001
072-303180-007
072-303180-008
3
208
240
118-130480-001 (3)
118-130480-003 (3)
3
7
3
3
3
3
7
3
3
7
3
3
3
3
3
3
3
4
3
170-057688-001
170-057688-002
170-057688-001
193-057699-001
5
112-130398-001
Contactor-24V Coil (30A)
Contactor-24V Coil (50A)
31-00
277
480
118-130480-004 (3) 193-057700-001
118-130480-005 (3) 193-057699-001
Contactor-120V Coil (30A)
32-00 Contactor-120V Coil (50A)
Transformer
Contactor-120V Coil (30A)
32-45 Contactor-120V Coil (50A)
Transformer
208
118-130480-002 (3)
193-057699-001
118-130480-017 (3)
7.5 240
112-130398-002
112-130398-003
6
170-057688-004
277
480
118-130480-007 (3) 193-057700-001
118-130480-008 (3) 193-057699-001
Contactor-120V Coil (30A)
Contactor-120V Coil (50A)
33-00
4
5
7
170-057688-002
170-057688-003
170-057688-005
Contactor-208/240V Coil (30A) 072-303180-013
Contactor-208/240V Coil (50A) 072-303180-014
Contactor-208/240V Coil (30A) 072-303180-013
Contactor-208/240V Coil (50A) 072-303180-014
9.8 208
118-130480-009 (3)
193-057699-001
118-130480-002 (3)
34-00
34-45
240
10
277
480
118-130480-006 (3) 193-057700-001
118-130480-010 (3) 193-057699-001
Optional Transformer Fusing
NOTES: Number in parenthesis ( ) indicates quanitity required of that part.
Fuse Type
Part Number
KTK-3
128-047763-007 (2)
Fan Motor
ꢁ
Contactor
ꢂ
Transformer
ꢆ
Grille
ꢄ
Heating Element
ꢀ
Fan Blade
ꢃ
Overheat Cutout
ꢅ
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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