Chromalox Air Conditioner PF451 3 User Manual

SERVICE REFERENCE  
Installation, Operation  
DIVISION  
SALES  
4
SECTION VUH  
and  
REFERENCE  
(Supersedes PF451-2)  
PF451-3  
RENEWAL PARTS IDENTIFICATION  
161-057823-001  
DATE  
JULY, 2002  
Type VUH Vertical Unit Heater  
Position With  
Junction Box  
Facing Away  
From Walls  
48" Min.  
Note:  
For Easy Access  
Knockout Location  
See Table 2  
12" Min.  
F
4-11/16" Dia.  
H
A
Approx.  
Mounting  
Holes  
For Recommended  
Conduit Size.  
D
E
B
M
4-11/16" Dia.  
Mounting Holes  
7' Min.  
To Floor  
C
L
Warm Air  
Discharge  
C
Figure 1  
Volts  
Figure 2  
Specifications — Table 1  
Heating Capacity  
Model  
Air Delivery  
FPM  
Dimensions (In.)  
Max.  
Mtg.  
Height  
(Ft.)  
Mtg.  
Weight  
(Lbs.)  
1
3
Outlet  
Temp.˚F*  
kW  
BTUH  
CFM  
A
B
C
D
E
F
H
M
Phase Phase  
208  
240  
480  
VUH-C-15 15  
51,000  
1300  
1600  
93  
25  
14  
13-1/2  
26  
4-5/8  
8-3/8  
6
7-1/4 12-5/8  
85  
19.5  
VUH-C-20  
20  
208  
480  
480  
68,000  
85,000  
1300  
1300  
1600  
1600  
104  
115  
23  
20  
14  
14  
13-1/2  
13-1/2  
26  
26  
4-5/8  
4-5/8  
8-3/8  
8-3/8  
6
6
7-1/4 12-5/8  
7-1/4 12-5/8  
85  
85  
VUH-C-25 25  
* Based on 60˚F entering air.  
** For instructions on VUH units rated 5-10 kW refer to Bulletin PF450; VUH units rated 30-50 refer to Bulletin PF452.  
© 2010 Chromalox®, Inc.  
 
MAINTENANCE  
1. Before activating for next heating season, vacuum or use com-  
WARNING: Hazard of Shock. 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.  
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  
480V Motor Hook-Up  
7
10  
2
Elements  
6
8
6
9
7
10  
2
8
5
Elements  
6
8
11  
208 - 240V Motor Hook-Up  
9
3
10  
11  
4
1
5
M
M
11  
208 - 240V Motor Hook-Up  
9
3
4
1
7
4
5
M
1
3
2
To Fuses  
KTK-4  
KTK-4  
Cutout  
Cutout  
Transformer Color Code Index  
T1 T2 T3  
T1 T2 T3  
C1  
L1  
PRI XFMR 120V SEC.  
VOLT LEAD CLRS LEAD CLRS  
24V SEC.  
LEAD CLRS  
C1  
Contactor  
Contactor  
L2 L3  
L1  
L3  
L2  
H1  
208 BLK  
240 BLK  
277 BLK  
H2  
X1  
X2  
X1  
X2  
X1  
X2  
RED  
ORG  
BRN  
BLK WHT YEL BLU  
BLK WHT YEL BLU  
BLK WHT YEL BLU  
XFMR  
L1 L2 L3  
TB1  
Fusing  
Optional  
XFMR  
3ø  
H1  
H2  
480  
Power  
60 HZ  
BLK BLK/RED BLK WHT YEL BLU  
TB1  
L1 L2 L3  
C1 C2  
TB2  
Thermostat  
(By Others)  
3ø  
Power  
60 HZ  
Fused Switch  
(By Others)  
C1 C2  
TB2  
Thermostat  
(By Others)  
Control Power  
(By Others)  
Fused Switch  
(By Others)  
Customer Wiring  
Factory Wire  
Customer Wiring  
Factory Wire  
Figure 3  
Figure 4  
7
10  
8
Transformer Color Code Index  
PRI XFMR 120V SEC.  
VOLT LEAD CLRS LEAD CLRS LEAD CLRS  
208 - 240V  
Elements  
6
Motor Hook-Up  
24V SEC. 480V Motor Hook-Up  
7
10  
11  
4
1
Elements  
6
9
5
6
8
M
208 - 240V Motor Hook-Up  
9
3
8
5
H1  
208 BLK  
240 BLK  
277 BLK  
H2  
X1  
X2  
X1  
X2  
10  
11  
11  
4
RED  
ORG  
BRN  
BLK WHT YEL BLU  
BLK WHT YEL BLU  
BLK WHT YEL BLU  
M
5
M
2
7
4
2
9
KTK-4  
1
3
1
2
3
480  
To Fuses  
BLK BLK/RED BLK WHT YEL BLU  
Cutout  
KTK-4  
Customer Wiring  
Factory Wire  
T1 T2 T3  
Cutout  
Contactor  
C1  
L1  
Contactor  
T2  
T1 T2 T3  
T1  
C1  
L1  
T3  
XFMR  
L2 L3  
Thermostat  
(By Others)  
C3  
X1  
H1  
X2  
H2  
L2 L3  
L3  
L1  
L2  
Heat  
Fan  
L1 L2 L3  
TB1  
C1 C2  
TB2  
Thermostat  
(By Others)  
TB1  
L1 L2 L3  
3ø  
Power  
60 HZ  
XFMR  
Fusing  
Optional  
C1 C2  
C4 TB2 TB2  
2 PDT  
3ø  
Power  
60 HZ  
Switch  
(By Others)  
Fused Switch  
(By Others)  
Optional Heat  
Recovery switch  
(By Others)  
Fused Switch  
(By Others)  
Customer Wiring  
Factory Wire  
Figure 6  
Figure 5  
7
10  
Elements  
6
8
11  
4
5
M
2
208 - 240V  
Motor Hook-Up  
9
3
1
Thermostat  
(By Others)  
KTK-4  
T2  
T1  
C1  
L1  
T3  
T1 T2 T3  
C3  
Contactor  
Contactor  
L2 L3  
L3  
L1  
L2  
Heat  
Fan  
Cutout  
TB1  
L1 L2 L3  
TB2  
C4 C2 C1  
2 PDT  
Switch  
3ø  
Power  
60 HZ  
(By Others)  
Fused Switch  
(By Others)  
Optional Heat  
Recovery switch  
(By Others)  
Note: All fan motors are totally enclosed and internally thermal overload protected.  
Customer Wiring  
Factory Wire  
MOTOR LUBRICATION  
Motors in VUH-C-15 through VUH-C-25 have sleeve bearings which are factory lubricated.  
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.  
4
5
6
Fan  
112-510499-001  
134-130439-001  
Grille  
Controls  
Overheat Cutout 300-024283-004  
Diag. Wiring  
Item Dia.  
No. Figure  
Code  
No.  
Part  
Number  
Wiring Diagram  
Part No.  
Description  
Elements and Motor  
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
Element  
Part No.  
(Item 1)  
Motor  
Part No.  
(Item 2)  
3
7
3
3
3
3
7
3
3
7
3
3
3
3
3
3
3
4
3
170-057688-006  
170-057688-007  
170-057688-006  
Code  
kW Volts Phase  
No.  
Contactor-24V Coil (30A)  
Contactor-24V Coil (50A)  
31-00  
15-83  
15-23 15 240  
15-43 480  
20-23 19.5 240  
20-43 20 480  
25-43 25 480  
208  
118-130437-007 (3)  
118-130437-004 (3)  
118-130437-005 (3)  
118-130437-007 (3)  
118-130437-008 (3)  
118-130437-011 (3)  
Contactor-120V Coil (30A)  
32-00 Contactor-120V Coil (50A)  
Transformer  
Contactor-120V Coil (30A)  
32-45 Contactor-120V Coil (50A)  
Transformer  
3
193-057647-001  
6
170-057688-009  
NOTES: Number in parenthesis ( ) indicates quanitity required of that part.  
Contactor-120V Coil (30A)  
Contactor-120V Coil (50A)  
33-00  
4
5
7
170-057688-007  
170-057688-008  
170-057688-010  
Contactor-208/240V Coil (30A) 072-303180-003  
Contactor-208/240V Coil (50A) 072-303180-014  
Contactor-208/240V Coil (30A) 072-303180-003  
Contactor-208/240V Coil (50A) 072-303180-014  
34-00  
34-45  
Optional Transformer Fusing  
Fuse Type  
Part No.  
KTK-3  
128-047763-007 (2)  
Motor Fusing  
Fuse Type  
KTK-4  
Fan Motor  
Part No.  
128-047763-008 (3)  
Contactor  
Transformer  
Grille  
Heating Element  
Fan Blade  
Overheat Cutout  
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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