Chromalox Air Conditioner PF479 6 User Manual

®
Chromalox  
SERVICE REFERENCE  
Installation  
DIVISION  
SALES  
4
SECTION LUH  
and  
(Supersedes PF479-5)  
REFERENCE  
PF479-6  
RENEWAL PARTS IDENTIFICATION  
161-303474-001  
DATE  
JANUARY, 2003  
Type LUH  
Horizontal Unit Heater  
Specifications — Table 1  
Electrical Data (60 Hz)  
Dimensions (In.)  
Width  
Standard  
Contactor  
Rating (Qty.)  
Model  
Volts  
Watts  
Phase  
Amps  
BTU  
Height  
Depth  
LUH-D-02-81  
LUH-D-02-21  
LUH-D-02-71  
LUH-D-04-81  
LUH-D-04-83  
LUH-D-04-21  
LUH-D-04-23  
LUH-D-04-71  
LUH-D-04-43  
LUH-D-05-81  
LUH-D-05-83  
LUH-D-05-21  
LUH-D-05-23  
LUH-D-05-71  
LUH-D-05-43  
LUH-D-07-81  
LUH-D-07-83  
LUH-D-07-21  
LUH-D-07-23  
LUH-D-07-71  
LUH-D-07-43  
LUH-D-10-81  
LUH-D-10-83  
LUH-D-10-21  
LUH-D-10-23  
LUH-D-10-43  
LUH-D-12-83  
LUH-D-12-23  
LUH-D-12-43  
LUH-D-15-83  
LUH-D-15-23  
LUH-D-15-43  
LUH-D-20-23  
LUH-D-20-43  
LUH-D-25-43  
LUH-D-30-83  
LUH-D-30-23  
LUH-D-30-43  
LUH-D-35-23  
LUH-D-35-43  
LUH-D-40-23  
LUH-D-40-43  
LUH-D-45-43  
208  
208/240  
277  
2,667  
2,000/2,667  
2,667  
1
1
1
1
3
1
3
1
3
1
3
1
3
1
3
1
3
1
3
1
3
1
3
1
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
12.8  
11.1 *  
9.6  
19.2  
11.2  
16.7 *  
9.6 *  
14.5  
4.8  
24.0  
13.8  
20.8 *  
12.1 *  
18.2  
6.0  
36.1  
20.9  
31.1 *  
18.1 *  
27.2  
9.0  
48.0  
27.8  
41.7 *  
24.0 *  
12.0  
34.8  
30.1 *  
15.1  
41.8  
36.2 *  
18.1  
48.0 *  
24.0  
30.0  
83.4  
72.2 *  
36.1  
84.3 *  
42.1  
96.0 *  
48.0  
54.1  
30A (1)  
30A (1)  
30A (1)  
30A (1)  
30A (1)  
30A (1)  
30A (1)  
30A (1)  
30A (1)  
30A (1)  
30A (1)  
30A (1)  
30A (1)  
30A (1)  
30A (1)  
50A (1)  
30A (1)  
30A (1)  
30A (1)  
30A (1)  
30A (1)  
50A (1)  
30A (1)  
30A (1)  
30A (1)  
30A (1)  
50A (1)  
50A (1)  
30A (1)  
50A (1)  
50A (1)  
30A (1)  
50A (1)  
30A (1)  
50A (1)  
50A (2)  
50A (2)  
30A (2)  
50A (2)  
30A (2)  
50A (2)  
30A (2)  
30A (2)  
8,850  
16  
13-1/8  
8-7/8  
208  
4,000  
208/240  
3,000/4,000  
13,661  
17,076  
25,598  
34,130  
16  
13-1/8  
8-7/8  
277  
480  
4,000  
4,000  
208  
5,000  
208/240  
3,750/5,000  
16  
13-1/8  
17-1/4  
17-1/4  
8-7/8  
11-1/2  
11-1/2  
277  
480  
5,000  
5,000  
208  
7,500  
208/240  
5,625/7,500  
20-1/2  
20-1/2  
277  
480  
7,500  
7,500  
208  
10,000  
208/240  
7,500/10,000  
480  
208  
208/240  
480  
208  
208/240  
480  
208/240  
480  
480  
208  
208/240  
480  
10,000  
12,500  
9,375/12,500  
12,500  
15,000  
11,250/15,000  
15,000  
15,000/20,000  
20,000  
25,000  
30,000  
22,500/30,000  
30,000  
42,663  
51,195  
20-1/2  
20-1/2  
17-1/4  
17-1/4  
11-1/2  
11-1/2  
68,460  
85,525  
24  
24  
20-1/8  
20-1/8  
11-1/2  
11-1/2  
102,390  
119,455  
24  
24  
20-1/8  
20-1/8  
17-1/4  
17-1/4  
208/240  
480  
208/240  
480  
26,250/35,000  
35,000  
30,000/40,000  
40,000  
136,520  
153,585  
24  
24  
20-1/8  
20-1/.8  
17-1/4  
17-1/4  
480  
45,000  
† These models can be field changed from single phase to three phase or three phase to single phase.  
*Note: 208V amperage is 86% of 240V value.  
© 2010 Chromalox, Inc.  
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INSTALLATION  
BACK WALL  
G
Threaded  
Mounting  
Holes  
S
I
D
E
L
I
W
A
L
X
L
Figure 2 Rod Spacing  
Table 4 — Rod Thread Type and Spacing Dimensions (In.) for  
Horizontal Discharge  
Dimensions (In.)  
Rod  
Thread  
Type  
Figure 3 Wall and Ceiling Clearance (Table 2)  
Unit  
I
G
L
X
2 - 5kW  
5/16 - 18 4-1/2  
5-1/2  
8-1/4  
8-1/4  
8-1/4  
2-3/4  
4-1/8  
4-1/8  
4-1/8  
2-1/4  
3-1/8  
3-1/8  
5-7/8  
7-1/2 - 15kW 3/8 - 16 6-1/4  
20 - 25kW  
30 - 45kW  
3/8 - 16 6-1/4  
3/8 - 16 11-3/4  
Note:  
W = Minimum Distance to  
Wall for Full 180˚ Swivel  
One 11/16" mounting hole  
for swivel mounting  
for ceiling  
W
N
V
M
U
A
Knockouts  
1/2"  
B
C
Figure 4  
Optional Ceiling Swivel Mounting Bracket  
Dimensions (In.)  
Bracket  
Model  
No.  
Wt. Use  
(Lbs.) With  
A
B
C
M
N
U
V
W
Chromalox  
®
LUH-02  
Figure 6  
WUH-04A  
16 13-1/8 8-7/8  
6
4-7/16  
4
4-1/2 10-1/2  
3
04, 05  
Heater Back View  
LUH-07  
5-1/2  
WUH-05  
WUH-05  
WUH-06  
20-1/2 17-1/4 11-1/2  
24 20-1/8 11-1/2  
24 20-1/8 17  
8
8
6-1/4  
6-1/4  
6
6
6
7-1/4  
7-1/4  
7-1/4  
16  
16  
21  
10, 12, 15  
Figure 5  
5-1/2 LUH-20, 25  
Knockout Sizes  
Optional Wall Swivel Mounting Bracket  
LUH-30  
11  
13-3/4 10  
Dimensions - (In.)  
Bracket  
LUH-02 - LUH-05  
LUH-07 - LUH-15  
LUH-20 - LUH-25  
LUH-30 - LUH-45  
3/4” (1)  
35, 40, 45  
Bracket  
Model  
Number  
1” (1)  
Weight  
(Lbs.)  
Use  
With  
3/4”, 1”, 1-1/4”(1)  
3/4”, 1”, 1-1/4”(1)  
P
Q
R
S
T
LUH-02  
04, 05  
WUH-01A  
WUH-02  
1-3/4  
21-1/2  
6-3/4  
5-1/2  
14-15/16  
4-1/2  
LUH-07  
2
2
28-7/16  
28-7/16  
9-1/2  
8-3/8  
22-1/4  
12-1/4  
10, 12, 15  
WUH-02  
WUH-03  
9-1/2  
5
8-3/8  
3-1/2  
22-1/4  
33-1/4  
12-1/4  
24-1/4  
LUH-20, 25  
LUH-30,  
5-1/2 28-11/16  
35, 40, 45  
3
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WIRING  
3. Consult the local wiring code in your area.  
SUMMER FAN SWITCH (MOUNTED ON FRONT OF  
HEATER). When the switch handle is pointing toward the “SUM-  
MER” position, the fan will run continuously. When the switch  
handle is pointing toward the “WINTER” position, the fan will run  
only when the heating elements are hot.  
REMOTE FAN SWITCH (MANUAL SWITCH-LINE VOLT-  
AGE). 480V requires an additional relay. The wall switch is packed  
in the wiring compartment.  
ELECTRIC SHOCK HAZARD. Disconnect all power  
before installing or servicing heater. Failure to do  
so could result in personal injury or property dam-  
age. Heater must be installed by a qualified person  
in accordance with the National Electrical Code,  
NFPA 70.  
The remote fan switch is mounted external and remote from the  
LUH unit heater. The voltage of the remote fan switch is the same  
as the supply voltage to the LUH heater.  
1. Use 14 gauge copper, NEC Class 1, 600V rated insulated wire.  
Wiring must meet all Local and NEC requirements for 480V  
service.  
2. Install the remote fan switch in standard wall box in any con-  
venient location that is protected from traffic or other acci-  
dental damage.  
ELECTRIC SHOCK HAZARD. Any installation involv-  
ing electric heaters must be performed by a quali-  
fied person and must be effectively grounded in  
accordance with the National Electrical Code to  
eliminate shock hazard.  
1. Use heater only on the voltage and frequency specified on the  
nameplate.  
2. All wiring should be done in accordance with local codes and  
the National Electrical Code by a qualified person as defined in  
the NEC.  
3. Connect the 14 gauge copper field wire to the switch lead  
wires with suitable connectors.  
REMOTE FAN SWITCH (USED WITH 24 or 120-VOLT  
RELAY) (Available as a kit or factory installed option). The wall  
switch is packed in the wiring compartment.  
3. Two knockouts are provided on the back of the heater for wire  
entry. See Figure 6 for location of knockouts.  
4. Branch circuit wire for connection to heater must be at least  
60°C wire.  
1. Use 18 gauge (min.) NEC Class 1, 600V wiring that meets all  
Local and NEC requirements.  
5. The bottom access door is hinged. There is one screw that must  
be loosened to gain access (Figure 3). This screw is the captive  
type; do not try to remove it.  
2. Install the wall switch in a standard wall box in any convenient  
location that is protected from traffic or other accidental damage.  
3. Connect the field wire to the switch lead wires with suitable  
connectors.  
6. A ground terminal is provided near the power terminal board.  
The ground wire should be connected before other connections  
are made.  
15/16  
7. Stripped wire leads are supplied to be connected to accept the  
correct size power supply wire. Copper wire rated at 600V and  
60°C is satisfactory for the heater branch circuit.  
8. Electrical accessories, either kits or factory-installed options, are  
shown connected by a dash line on the heater wiring diagram.  
9. Wiring connections are to be made on designated wire leads as  
shown in the wiring diagrams located inside the access door.  
POWER DISCONNECT SWITCH (Available as a kit or factory  
installed option.) This switch (Figure 7) disconnects the power to  
the power leads when the handle is placed in its off position.  
1. Use copper conductor supply wire only when connecting to  
the power line.  
®
Chromalox  
Figure 8 — Thermostat Location, Front View  
OPTIONAL THERMOSTAT (LUH-TK)  
Heaters can be equipped with an optional thermostat of the  
Bulb and Capillary type for automatic temperature control (Figure  
8). The thermostat controls the heating elements and fan simulta-  
neously to achieve set temperature.  
2. Connection to the switch pigtails should be made with com-  
The “Lo” setting of the thermostat is approximately 40°F, and  
the “Hi” setting is approximately 90°F.  
pression connectors and the joint should be then well insulated.  
CONTROL VOLTAGE WIRING - EXTERNAL REMOTE  
Power  
THERMOSTATS AND FAN SWITCHES  
Disconnect  
Switch  
Contactor  
ELECTRIC SHOCK HAZARD. Line voltage is present  
on some of the terminals. Always disconnect the  
power from the heater before making any connec-  
tions.  
L1  
L2  
L3  
S1  
S2  
S3  
To  
Power  
Supply  
See Notes  
1. Use 600V, NEC Class 1 insulated wiring with a minimum  
gauge of 18 for thermostats and a minimum gauge of 14 for  
line voltage motor switch (remote fan switch without relay).  
2. The thermostat should be located in the area to be heated on  
an inside wall. The thermostat should not be exposed to drafts,  
sunlight, radiation from hot objects, or in a direct line with the  
discharge from the unit heater.  
See  
Note 2  
Notes:  
1. This illustration shows wiring hook up  
for three phase service. Remove lead  
wires marked L2 and S2 when using single  
phase power service.  
3. Install the thermostat approximately 5 feet above the floor  
line.  
2. For units without contactors, disconnect  
switch is to be wired to lead wires on  
heater power.  
4. Install the remote fan switch in any convenient location that is  
protected from traffic or likely accidental damage.  
5. Internal optional controls are shown on the unit heater wiring  
diagrams by a dash line.  
3. Use copper supply wire only with this  
switch.  
Use wiring diagrams as listed for model number on (A through X),  
pages 5, 6 and 9.  
Figure 7  
For installation and optional control kits, refer to instruction sheets  
listed on page 8.  
Power Disconnect Switch Wiring Diagram  
4
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WIRING DIAGRAMS  
Optional  
Field Wiring  
Thermostat  
Optional  
Built-in Or Field Installed  
Factory Wiring  
Optional Thermostat  
Built-in Or Field Installed  
To Element Wiring  
1 Phase 2 Or 3 Elem  
3 Phase Delta  
Built-in Or Field Installed  
Summer Fan Switch  
Built-in Or Field  
Installed  
To Element Wiring  
Cutout  
Cutout  
1
3
7
9
10  
12  
2
3 Phase Delta  
MOTOR  
1O OR 3O  
Motor  
1Ø Or 3Ø  
X1  
X2  
H2  
T1 T2 T3  
C1  
T1 T2 T3  
C1  
T1 T2 T3  
C1  
8
XFMR  
11  
X1  
H1  
X2  
H2  
T1 T2 T3  
C1  
3O Wiring Only  
L1 L3  
L1 L2L3  
H1  
T1 T2 T3  
C1  
XFMR  
3Ø Wiring Only  
L3  
L2  
L1  
Power  
60 HZ  
L1 L2L3  
3Ø Wiring Only  
L3  
L2  
L1  
Transformer Color Code Index  
PRI. XFMR 120V SEC. 24V SEC.  
VOLT. LEAD CLRS. LEAD CLRS. LEAD CLRS.  
H1 H2 X1 X2 X1 X2  
1 Phase 2 Or 3 Elem  
Optional Disconnect Switch  
Built-in Or Field Installed  
Power  
60 HZ  
Transformer Color Code Index  
PRI. XFMR 120V SEC.  
24V SEC.  
VOLT. LEAD CLRS. LEAD CLRS. LEAD CLRS.  
H1 H2 X1 X2 X1 X2  
PRI.  
PRI.  
Optional Disconnect Switch  
Built-in Or Field Installed  
Motor  
1Ø Or 3Ø  
208 BLK RED BLK WHT YEL BLU  
240 BLK ORG BLK WHT YEL BLU  
277 BLK BRN BLK WHT YEL BLU  
480 BLK BLK/RED BLK WHT YEL BLU  
Field Wiring  
208 BLK RED BLK WHT YEL BLU  
240 BLK ORG BLK WHT YEL BLU  
277 BLK BRN BLK WHT YEL BLU  
T1 T2 T3  
C1  
T1 T2 T3  
C1  
Built-in Or Field Installed  
Factory Wiring  
L1 L3  
Standard Motor Connection  
30-00,32-00 30-40,32-40  
30-41,32-41 30-42,32-42 30-44,32-44  
Figure A  
Figure B  
To Element  
Wiring  
Optional  
Optional  
Optional  
Thermostat  
Built-in Or  
Field Wiring  
Built-in Or Field Installed  
Factory Wiring  
Fan Relay  
Built-in  
Thermostat  
To Element Wiring  
Motor  
1O Or 3O  
Built-in Or Field Installed  
Cutout  
Or Field  
Installed  
3 Phase Delta  
Field Installed  
C1  
Optional  
Summer  
Fan Switch  
Built-in Or  
Field Installed  
C1  
C2  
C2  
1 Phase 2 Or 3 Elem  
T1 T2 T3  
C1  
3O  
Cutout  
Wiring C3  
C3  
Control  
Power  
By Others  
Only  
T1 T2 T3  
C1  
T1 T2 T3  
C1  
2
1
3
X1  
H1  
X2  
H2  
Motor  
1O  
7
8
11  
9
10  
12  
L1 L2L3  
T1 T2 T3  
C1  
Optional Disconnect  
Switch Built-in Or  
Field Installed  
3Ø Wiring  
Only  
L1 L3  
1 Phase 2 Or 3 Elem  
L1 L2 L3  
Transformer Color Code Index  
PRI. XFMR 120V SEC. 24V SEC.  
VOLT. LEAD CLRS. LEAD CLRS. LEAD CLRS.  
H1 H2 X1 X2 X1 X2  
3 Phase Delta  
L3  
L2  
L1  
PRI.  
Power  
60 HZ  
Power  
60 HZ  
T1 T2 T3  
C1  
Optional Disconnect Switch  
Built-in Or Field Installed  
208 BLK RED BLK WHT YEL BLU  
240 BLK ORG BLK WHT YEL BLU  
277 BLK BRN BLK WHT YEL BLU  
480 BLK BLK/RED BLK WHT YEL BLU  
30-45, 32-45 30-43, 32-43  
Motor  
1O Or 3O  
T1 T2 T3  
C1  
L1 L3  
Field Installed  
T1 T2 T3  
C1  
Built-in Or Field Installed  
Factory Wiring  
L1 L2L3  
31-00,33-00 31-40,33-40  
Standard Motor Connection  
Figure C  
Figure D  
Optional  
Field Installed  
Built-in Or Field Installed  
Factory Wiring  
Optional  
To Element Wiring  
Optional  
Thermostat  
Built-in Or  
To Element Wiring  
Summer Fan Switch  
Built-in Or Field  
Installed  
Thermostat  
Built-in Or Field Installed  
Cutout  
C1  
Field Installed  
Optional  
Fan Relay  
Built-in Or  
Field  
1 Phase 2 Or 3 Elem  
1
2
Motor  
1O Or 3O  
Optional  
Summer  
Fan Switch  
Built-in Or  
Field Installed  
Control  
Power  
By Others  
3
Motor  
1Ø Or 3Ø  
Cutout  
7
9
3 Phase Delta  
C1  
C2  
T1 T2 T3  
C1  
8
Installed  
10  
12  
11  
T1 T2 T3  
C1  
T1 T2 T3  
C2  
T1 T2 T3  
C1  
C3  
C3  
C3  
3Ø Wiring Only  
2
1
3
7
T1 T2 T3  
C1  
L3  
L2  
L1  
L1 L3  
Power  
60 HZ  
3Ø Wiring Only  
8
11  
9
10  
12  
L1 L2L3  
3 Phase Delta  
Control Power  
(By Others)  
Optional Disconnect Switch  
Built-in Or Field Installed  
1 Phase 2 Or 3 Elem  
3O Wiring Only  
Note: 480V Heaters Require  
Fan Relay For 480V Motor  
(See Fig. F)  
L1 L2 L3  
Motor  
1Ø Or 3Ø  
Motor  
1O Or 3O  
Power  
60 HZ  
T1 T2 T3  
C1  
Field Installed  
Built-in Or Field Installed  
Factory Wiring  
T1 T2 T3  
C1  
T1 T2 T3  
C1  
T1 T2 T3  
C1  
Optional Disconnect Switch  
Built-in Or Field Installed  
31-43,33-43 31-45,33-45  
L1 L2L3  
Standard Motor Connection  
L1 L3  
Standard Motor Connection  
31-41,33-41 31-42,33-42 31-44,33-44  
Figure E  
Figure F  
Optional  
Optional  
Optional Thermostat  
Built-in Or Field Installed  
Summer Fan Switch  
Built-in Or Field  
Installed  
Thermostat  
Built-in Or  
To Element Wiring  
To Element Wiring  
3 Phase Delta  
Field Installed  
Cutout  
1
3
7
9
2
Motor  
1Ø Or 3Ø  
Cutout  
Motor  
1Ø  
8
T1 T2 T3  
C1  
3 Phase Delta  
10  
12  
T1 T2 T3  
C1  
T1 T2 T3  
C1  
11  
L1 L2L3  
3Ø Wiring Only  
T1 T2 T3  
C1  
1 Phase 2 Or 3 Elem  
L3  
L2  
L1  
3Ø Wiring Only  
Power  
60 HZ  
3Ø Wiring Only  
L1 L2L3  
L3  
L2  
L1  
1 Phase 2 Or 3 Elem  
Power  
60 HZ  
Optional Disconnect Switch  
Built-in Or Field Installed  
T1 T2 T3  
C1  
Motor  
1Ø Or 3Ø  
Optional Disconnect Switch  
Built-in Or Field Installed  
Field Installed  
Built-in Or Field Installed  
Factory Wiring  
Field Installed  
Built-in Or Field Installed  
Factory Wiring  
T1 T2 T3  
C1  
L1 L3  
T1 T2 T3  
C1  
34-41,35-41 34-42,35-42 34-44,35-44  
L1 L3  
Standard Motor Connection  
34-00,35-00 34-40,35-40  
Figure G  
Figure H  
5
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WIRING DIAGRAMS  
Field Installed  
Built-in Or Field Installed  
Factory Wiring  
Elements  
Stage 1  
Elements  
Stage 2  
Field Installed  
Built-in Or Field Installed  
Factory Wiring  
To Element Wiring  
Motor  
3o  
Optional  
Thermostat  
Built-in Or  
Optional  
Fan Relay  
Built-in Or  
Field  
Optional  
Motor  
1Ø Or 3Ø  
Thermostat  
1 Phase 2 Or 3 Elem  
Built-in Or Field Installed  
Field Installed  
Fuses  
KTK-3  
Cutout  
Installed  
C1  
C2  
C3  
2
1
3
7
T1 T2 T3  
C1  
T1 T2 T3  
T1 T2 T3  
T1 T2 T3  
T1 T2 T3  
C1  
C1  
C2  
Contactor (Typ.)  
C3  
X1  
H1  
X2  
H2  
Cutouts  
8
11  
9
10  
12  
L1 L3  
XFMR  
Optional  
Summer Fan Switch  
Built-in Or Field  
Installed  
3 Phase Delta  
Fuses  
(When Req'd)  
3Ø Wiring Only  
Transformer Color Code Index  
L1 L2 L3  
AL3  
AL2  
AL1  
BL3  
PRI.  
PRI. XFMR 120V SEC.  
VOLT. LEAD CLRS. LEAD CLRS. LEAD CLRS.  
24V SEC.  
Power  
60 HZ  
BL2  
BL1  
Motor  
1Ø Or 3Ø  
H1 H2 X1 X2 X1 X2  
T1 T2 T3  
C1  
L3  
Optional Disconnect  
Switch Built-in Or  
Field Installed  
3 Phase,  
60 HZ Power  
208 BLK RED BLK WHT YEL BLU  
240 BLK ORG BLK WHT YEL BLU  
480 BLK BLK/RED BLK WHT YEL BLU  
L2  
L1  
T1 T2 T3  
C1  
Optional Disconnect Switch  
Built-in Or Field Installed  
34-43,35-43 34-45,35-45  
L1 L2L3  
Standard Motor Connection  
30-00, 32-00 30-40, 32-40  
Figure I  
Figure J  
To Elements  
Stage 1  
To Elements  
Stage 2  
Optional Thermostat  
Built-in Or  
Field Installed  
Elements  
Elements  
Stage 2  
C2  
Elements  
Stage 2  
Elements  
Motor  
3Ø  
Optional  
Motor  
3Ø  
T1T2T3  
C1  
T1T2T3  
C2  
Contactor  
Thermostat  
Built-in Or  
Field Installed  
Fan Relay  
Stage 1  
Stage 1  
Fuses KTK-3  
C3  
Motor  
3Ø  
Cutouts  
C2  
T1T2T3  
C2  
T1T2T3  
Cutouts  
T1 T2  
C1  
T3  
T1 T2  
C2  
T3  
Contactor  
C3  
1
3
2
Standard Motor Connection  
C1  
Contactor  
T1 T2 T3  
T1 T2 T3  
Contactor  
7
C1  
C2  
(Typ.)  
9
10  
12  
8
2
8
1
3
7
Motor  
3Ø  
Standard Motor Connection  
X1  
H1  
X2  
H2  
11  
C1  
X1  
Fuses KTK-3  
Fuses  
(When Req'd)  
9
X2  
10 11  
12  
XFMR  
Fuses  
(When Req'd)  
AL3  
BL3  
BL2  
AL2  
AL1  
XFMR  
Optional Summer  
Fan Switch  
Summer Fan Switch  
Transformer Color Code Index  
PRI. XFMR 120V SEC. 24V SEC.  
Built-in Or Field Installed  
Factory Wiring  
Transformer Color Code Index  
BL3  
Built-in Or  
AL3  
BL1  
AL2  
H1  
H2  
Field Installed  
BL2  
Optional Disconnect  
Switch Built-in Or  
Field Installed  
AL1  
PRI.  
BL1  
VOLT. LEAD CLRS. LEAD CLRS. LEAD CLRS.  
PRI. PRI.  
VOLT LEAD  
120V SEC. 24V SEC.  
LEAD CLRS. LEAD CLRS.  
XFMR  
CLRS  
Field Wiring  
Built-in Or Field Installed  
Factory Wiring  
H1 H2 X1 X2 X1 X2  
Optional Disconnect  
Switch Built-in Or  
Field Installed  
L1L2L3  
208 BLK RED BLK WHT YEL BLU  
240 BLK ORG BLK WHT YEL BLU  
480 BLK BLK/RED BLK WHT YEL BLU  
H1  
H2  
X1  
X2  
X1  
X2  
Note: Heater requires  
Fan Relay for 480V  
Motors. (See Figure L)  
3 Phase  
60 HZ Power  
L1 L2 L3  
208  
240  
BLK  
BLK  
RED  
BLK WHT YEL  
BLK WHT YEL  
BLU  
For Use With 480V  
30-43,32-43 30-45,32-45  
30-41, 30-42, 30-44  
32-41, 30-42, 32-44  
3 Phase,  
60 HZ Power  
ORG  
BLU  
Figure K  
Figure L  
Elements  
Elements  
Stage 2  
Elements  
Elements  
Stage 2  
Field Wiring  
Built-in Or Field Installed  
Factory Wiring  
Motor  
3Ø  
Motor  
3Ø  
Stage 1  
Stage 1  
Fuses KTK-3  
Fuses  
KTK-3  
C3  
C2  
1
3
2
Control Power  
(By Others)  
T1 T2 T3  
T1 T2 T3  
C3  
7
C1  
C2  
C2  
Contactor  
(Typ.)  
8
9
10  
12  
Cutouts  
T1 T2 T3  
T1 T2 T3  
C2  
Control Power  
(By Others)  
C1  
Contactor (Typ.)  
C1  
11  
Cutouts  
C1  
Fuses  
(When Req'd)  
Optional Summer  
Fan Switch  
To Elements  
Stage 1  
To Elements  
Stage 2  
Optional Thermostat  
Built-in Or  
Field Installed  
BL3  
AL3  
AL2  
AL1  
Motor  
3Ø  
Built-in Or  
Fuses  
(When Req'd)  
BL2  
Optional Thermostat  
Built-in Or  
Field Installed  
Field Installed  
AL3  
AL2  
AL1  
BL3  
BL2  
BL1  
BL1  
Optional Disconnect  
Switch Built-in Or  
Field Installed  
Note: Heater Requires  
Fan Relay For 480V Motors  
(See Fig. O)  
L3  
L2  
L1  
Field Installed  
Built-in Or Field Installed  
Factory Wiring  
Optional Disconnect  
Switch Built-in Or  
Field Installed  
3 Phase,  
60 HZ Power  
C1  
C2  
L1 L2 L3  
Standard Motor  
Connection  
3 Phase,  
60 HZ Power  
31-41, 33-41 31-44, 33-44  
31-00, 33-00 31-40, 33-40  
Figure M  
Figure N  
Elements  
C2  
Elements  
Stage 1  
Elements  
Elements  
Warning - First Stage Of Thermostat Must  
Be Connected To Terminals C1 & C2 To  
Insure That Motor Will Be Energized With  
First Stage Heat Operation  
Optional Thermostat  
Built-in Or  
T1T2T3  
C1  
T1T2T3  
Motor  
3Ø  
Contactor  
C2  
Field Installed  
(Single Stage)  
Stage 2  
T1T2T3  
Stage 1  
Fan Relay  
Stage 2  
Motor  
3Ø  
C3  
C2  
Fuses  
KTK-3  
T1T2T3  
Contactor  
Standard Motor Connection  
C2  
C1  
Contactor  
Cutouts  
C3  
C3  
C2  
C3  
C2  
2
8
1
3
7
Motor  
3Ø  
C1  
C2  
Contactor (Typ.)  
Cutouts  
Fuses KTK-3  
Fuses  
9
C1  
Stage 1  
C4  
10 11  
C1  
12  
(When Req'd)  
Alternate  
AL3  
BL3  
BL2  
AL2  
AL1  
Fuses  
(When Req'd)  
1 Stage  
Thermostat  
(by Others)  
Stage 2  
C1  
BL1  
2 Stage Thermostat  
(By Others)  
Control Power  
(By Others)  
Summer Fan Switch  
Field Installed  
Optional Disconnect  
Switch Built-in Or  
Field Installed  
Fused Switch  
(By Others)  
L1L2L3  
AL1 AL2 AL3  
BL1 BL2 BL3  
Customer Wiring  
Factory Wiring  
3 Phase  
60 HZ Power  
For Use With 480V  
Built-in Or Field Installed  
Factory Wiring  
3 Phase,  
60 HZ Power  
3 Phase,  
60 HZ Power  
31-43,33-43 31-45,33-45  
34-00, 35-00, 34-40, 35-40  
Figure O  
Figure P  
6
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RENEWAL PARTS IDENTIFICATION  
MANUFACTURER PART NUMBER BREAKDOWN  
FOR MADE TO ORDER UNITS  
(LOCATED ON UNIT NAMEPLATE)  
L U H  
D
Heater  
Line Volts  
Wiring  
Figure  
Heater  
Line Volts  
Wiring  
Figure  
Code  
Description  
Part No.  
Code  
Description  
Part No.  
Element  
Part No.  
Motor  
Part No.  
Fan  
Part No.  
00-40 Thermostat DP  
All  
All  
All  
All  
All  
All  
All  
All  
All  
All  
All  
All  
All  
All  
All  
All  
All  
All  
All  
All  
300-049197-004  
072-303180-001  
072-303180-002  
315-304252-002  
072-303180-001  
072-303180-002  
315-304252-002  
300-049197-003  
072-303180-001  
072-303180-002  
315-304252-002  
300-049197-003  
292-057673-001  
072-303180-001  
072-303180-002  
315-304252-002  
292-057673-001  
072-303180-001  
072-303180-002  
315-304252-002  
Code Disconnect  
Rating  
Disconnect  
Part No.  
292-303472-001  
292-303472-002  
292-303472-003  
32-45 Contactor (120) 30A  
Contactor (120) 50A  
Transformer  
All  
All  
All  
072-303180-007  
072-303180-008  
315-304252-001  
Code  
kW  
Volts  
Phase  
30-00 Contactor ( 24 V) 30A  
Contactor ( 24 V) 50A  
Transformer  
30-40 Contactor ( 24 V) 30A  
Contactor ( 24 V) 50A  
Transformer  
A, J, S  
A, J  
C, L  
1
2
3
40A  
80A  
100A  
02-81  
02-21  
02-71  
04-81  
04-83  
04-21  
04-23  
04-71  
04-43  
05-81  
05-83  
2.67  
2.67  
2.67  
4
208  
208/240  
277  
208  
208  
208/240  
208/240  
277  
480  
208  
1
1
1
1
3
1
3
1
3
1
3
1
3
1
3
1
3
1
3
1
3
1
3
1
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
118-303160-001 (2) 193-302912-001 112-302997-001  
118-303160-002 (2) 193-302912-001 112-302997-001  
118-303160-003 (2) 193-302120-001 112-130367-001  
118-303160-001 (3) 193-302912-001 112-302997-001  
118-303160-001 (3) 193-302912-001 112-302997-001  
118-303160-002 (3) 193-302912-001 112-302997-001  
118-303160-002 (3) 193-302912-001 112-302997-001  
118-303160-003 (3) 193-302120-001 112-130367-001  
118-303160-004 (3) 193-302912-003 112-302997-001  
118-303160-005 (3) 193-302912-001 112-302997-001  
118-303160-005 (3) 193-302912-001 112-302997-001  
118-303160-006 (3) 193-302912-001 112-302997-001  
118-303160-006 (3) 193-302912-001 112-302997-001  
118-303160-007 (3) 193-302120-001 112-130367-001  
118-303160-008 (3) 193-302912-003 112-302997-001  
118-303170-005 (3) 193-302912-004 112-130367-007  
118-303170-005 (3) 193-302912-004 112-130367-007  
118-303170-001 (3) 193-302912-004 112-130367-007  
118-303170-001 (3) 193-302912-004 112-130367-007  
118-303170-006 (3) 193-302120-004 112-130367-007  
118-303170-004 (3) 193-302912-005 112-130367-007  
118-303169-001 (3) 193-302912-004 112-130367-002  
118-303169-001 (3) 193-302912-004 112-130367-002  
118-303169-002 (3) 193-302912-004 112-130367-002  
118-303169-002 (3) 193-302912-004 112-130367-002  
118-303169-003 (3) 193-302912-005 112-130367-002  
118-303169-004 (3) 193-302912-004 112-130367-002  
118-303169-005 (3) 193-302912-004 112-130367-002  
118-303169-006 (3) 193-302912-005 112-130367-002  
118-303169-007 (3) 193-302912-004 112-130367-002  
118-303169-008 (3) 193-302912-004 112-130367-002  
118-303169-009 (3) 193-302912-005 112-130367-002  
118-130419-010 (3) 193-302120-005 112-130367-003  
118-130419-011 (3) 193-302120-005 112-130367-003  
118-130419-012 (3) 193-302120-005 112-130367-003  
118-130384-013 (6) 193-302120-005 112-130367-004  
118-130384-014 (6) 193-302120-005 112-130367-004  
118-130384-015 (6) 193-302120-005 112-130367-004  
118-130384-021 (6) 193-302120-005 112-130367-004  
118-130384-016 (6) 193-302120-005 112-130367-004  
118-130384-022 (6) 193-302120-005 112-130367-004  
118-130384-017 (6) 193-302120-005 112-130367-004  
118-130384-018 (6) 193-302120-005 112-130367-004  
Fan Relay  
Fan Relay  
Remote Fan Switch 3PDT  
Thermostat SP  
2.6-5kW 072-303180-011  
7.5-45kW 072-303180-007  
All  
All  
All  
All  
All  
All  
All  
All  
All  
All  
All  
All  
All  
All  
All  
All  
292-057673-001  
300-049197-003  
072-303180-007  
072-303180-008  
072-303180-007  
072-303180-008  
300-049197-003  
072-303180-007  
072-303180-008  
292-057673-001  
300-049197-003  
072-303180-007  
072-303180-007  
292-057673-001  
072-303180-007  
072-303180-008  
4
Thermostat SP  
33-00 Contactor (120) 30A  
Contactor (120) 50A  
33-40 Contactor (120) 30A  
Contactor (120) 50A  
Thermostat SP  
33-41 Contactor (120) 30A  
Contactor (120) 50A  
Fan Switch 3PDT  
D, M, U  
D, M  
3/4  
3/4  
4
4
5
30-41 Contactor (24V) 30A  
Contactor (24V) 50A  
Transformer  
B, K  
B, K  
Thermostat SP  
Fan Switch 3PDT  
Miscellaneous Parts  
5
208  
30-42 Contactor (24V) 30A  
Contactor(24V) 50A  
Transformer  
Remote Fan Switch 3PDT  
30-43 Contactor (24V) 30A  
Contactor (24V) 50A  
Transformer  
Fan Relay  
Fan Relay  
Remote Fan Switch 3PDT  
30-44 Contactor (24V) 30A  
Contactor (24V) 50A  
Transformer  
E, N  
Thermostat Knob  
Mod. Decal Card  
169-049278-001  
170-303678-001  
05-21 3.75/5 208/240  
05-23 3.75/5 208/240  
05-71  
05-43  
07-81  
07-83  
07-21 5.6/7.5 208/240  
07-23 5.6/7.5 208/240  
07-71  
07-43  
10-81  
10-83  
10-21 7.5/10 208/240  
10-23 7.5/10 208/240  
10-43  
12-83  
12-23 9.4/12.5 208/240  
12-43  
15-83  
15-23 11.2/15 208/240  
15-43 15 480  
20-23 15/20 208/240  
20-43  
25-43  
30-83  
30-23 22.5/30 208/240  
30-43 30 480  
35-23 26.2/35 208/240  
35-43 35 480  
40-23 30/40 208/240  
40-43  
45-43  
Thermostat SP  
33-42 Contactor (120) 30A  
Contactor (120) 50A  
Remote Fan Switch 3PDT  
33-43 Contactor (120) 30A  
Contactor (120) 50A  
Fan Relay  
5
5
7.5  
7.5  
277  
480  
208  
208  
E, N, V  
F, O, R  
C, L, T  
2.6-5kW 072-303180-011  
7.5-45kW 072-303180-001  
2.6-5kW 072-303180-011  
7.5-45kW 072-303180-007  
All  
All  
All  
All  
All  
All  
All  
All  
All  
All  
292-057673-001  
072-303180-001  
072-303180-002  
315-304252-002  
292-057673-001  
300-049197-003  
072-303180-001  
072-303180-002  
315-304252-002  
292-057673-001  
Fan Relay (120V)  
7.5  
7.5  
10  
277  
480  
208  
208  
Remote Fan Switch 3PDT  
33-44 Contactor (120) 30A  
Contactor (120) 50A  
Remote Fan Switch 3PDT  
Thermostat SP  
33-45 Contactor (120) 30A  
Contactor (120) 50A  
Fan Relay  
All  
All  
All  
All  
All  
All  
All  
292-057673-001  
072-303180-007  
072-303180-007  
292-057673-001  
300-049197-003  
072-303180-007  
072-303180-008  
B, K  
C, L  
E, N  
Instruction Sheets  
1. Internal Thermostat  
10  
Remote Fan Switch 3PDT  
Thermostat SP  
30-45 Contactor (24V) 30A  
Contactor (24V) 50A  
Transformer  
PF-448  
PF-480  
2. Internal/External Summer Fan Switch  
10  
12.5  
480  
208  
3. Internal/External Summer Fan Switch  
with Relay  
2.6-5kW 072-303180-011  
7.5-45kW 072-303180-007  
All  
All  
PF-481  
PF-482  
Remote Fan Switch 3PDT  
Fan Relay  
Fan Relay  
Fan Relay  
Remote Fan Switch 3PDT  
Thermostat SP  
F, O  
G, P  
G, P  
H, Q  
4. Disconnect Switch  
2.6-5kW 072-303180-011  
7.5-45kW 072-303180-001  
292-057673-001  
300-049197-003  
12.5  
15  
480  
208  
Thermostat SP  
All  
All  
All  
All  
All  
All  
All  
All  
All  
All  
All  
All  
All  
All  
All  
300-049197-003  
072-303180-001  
072-303180-002  
072-303180-001  
072-303180-002  
300-049197-003  
072-303180-001  
072-303180-002  
300-049197-003  
292-057673-001  
072-303180-001  
072-303180-002  
292-057673-001  
072-303180-001  
072-303180-002  
34-00 Contactor (208/240) 30A 208/240 072-303180-013  
Contactor (208/240) 50A 208/240 072-303180-014  
34-40 Contactor (208/240) 30A 208/240 072-303180-013  
Contactor (208/240) 50A 208/240 072-303180-014  
31-00 Contactor (24V) 30A  
Contactor (24V) 50A  
31-40 Contactor (24V) 30A  
Contactor (24V) 50A  
Thermostat SP  
31-41 Contactor (24V) 30A  
Contactor (24V) 50A  
Thermostat SP  
D, M, U  
D, M  
20  
25  
30  
480  
480  
208  
Thermostat SP  
208/240 300-049197-003  
34-41 Contactor (208/240) 30A 208/240 072-303180-013  
Contactor (208/240) 50A 208/240 072-303180-014  
E, N  
Fan Switch 3PDT  
Thermostat SP  
34-42 Contactor (208/240) 30A 208/240 072-303180-013  
Contactor (208/240) 50A 208/240 072-303180-014  
Remote Fan Switch 3PDT 208/240 292-057673-001  
34-43 Contactor (208/240) 30A 208/240 072-303180-013  
Contactor (208/240) 50A 208/240 072-303180-014  
208/240 292-057673-001  
208/240 300-049197-003  
Fan Switch 3PDT  
31-42 Contactor (24V) 30A  
Contactor (24V) 50A  
Remote Fan Switch 3PDT  
31-43 Contactor (24V) 30A  
Contactor (24V) 50A  
Fan Relay  
H, Q  
E, N, V  
F, O, R  
40  
45  
480  
480  
I, R, V  
Fan Relay  
208/240 072-303180-013  
2.6-5kW 072-303180-011  
7.5-45kW 072-303180-001  
Remote Fan Switch 3PDT 208/240 292-057673-001  
34-44 Contactor (208/240) 30A 208/240 072-303180-013  
Contactor (208/240) 50A 208/240 072-303180-014  
Remote Fan Switch 3PDT 208/240 292-057673-001  
Fan Relay  
Remote Fan Switch 3PDT  
31-44 Contactor (24V) 30A  
Contactor (24V) 50A  
Remote Fan Switch 3PDT  
Thermostat SP  
31-45 Contactor (24V) 30A  
Contactor (24V) 50A  
Fan Relay  
All  
All  
All  
All  
All  
All  
All  
All  
292-057673-001  
072-303180-001  
072-303180-002  
292-057673-001  
300-049197-003  
072-303180-001  
072-303180-002  
072-303180-001  
H, Q  
E, N  
F, O  
Thermostat SP  
208/240 300-049197-003  
Part Number  
7.5-15kW  
34-45 Contactor (208/240) 30A 208/240 072-303180-013  
Contactor (208/240) 50A 208/240 072-303180-014  
Description  
2-5kW  
20-25kW  
30-45kW  
Louver  
182-130329-001 (4)  
276-130368-001 (4)  
300-049200-001  
043-130336-014  
043-130379-028  
182-130329-002 (5)  
276-130368-001 (5)  
300-049200-001  
043-130335-011  
043-130379-031  
182-130329-003 (6)  
276-130368-001 (6)  
300-049200-001  
043-130334-008  
043-130379-033  
182-130329-003 (6)  
276-130368-001 (6)  
300-049200-001  
043-130334-008  
043-130379-033  
Fan Relay  
208/240 072-303180-013  
I, R, V  
Louver spring  
Cut-Out  
Case Front  
Remote Fan Switch 3PDT 208/240 292-057673-001  
Thermostat SP  
35-00 Contactor (277) 30A  
Contactor (277) 50A  
35-40 Contactor (277) 30A  
Contactor (277) 50A  
Thermostat SP  
35-41 Contactor (277) 30A  
Contactor (277) 50A  
Fan Switch 3PDT  
208/240 300-049197-003  
Fan Relay  
Remote Fan Switch 3PDT  
Thermostat SP  
7.5-45kW 072-303180-011  
277  
277  
277  
277  
277  
277  
277  
277  
277  
277  
277  
277  
277  
277  
277  
277  
277  
277  
277  
277  
277  
277  
277  
277  
277  
072-303180-019  
072-303180-020  
072-303180-019  
072-303180-020  
300-049197-003  
072-303180-019  
072-303180-020  
292-057673-001  
300-049197-003  
072-303180-019  
072-303180-020  
292-057673-001  
072-303180-019  
072-303180-020  
072-303180-019  
292-057673-001  
072-303180-019  
072-303180-020  
292-057673-001  
300-049197-003  
072-303180-019  
072-303180-020  
072-303180-019  
292-057673-001  
300-049197-003  
G
G
H
All  
All  
All  
All  
All  
All  
All  
All  
All  
All  
All  
All  
All  
All  
All  
All  
All  
All  
All  
All  
All  
292-057673-001  
300-049197-003  
072-303180-007  
072-303180-008  
315-304252-001  
072-303180-007  
072-303180-008  
315-304252-001  
300-049197-003  
072-303180-007  
072-303180-008  
315-304252-001  
300-049197-003  
292-057673-001  
072-303180-007  
072-303180-008  
315-304252-001  
292-057673-001  
072-303180-007  
072-303180-008  
315-304252-001  
Case Back  
Case Wrapper  
W/O Fuse Door  
Case Wrapper  
With Fuse Door  
043-130314-005  
043-130315-004  
043-130316-004  
043-130317-004  
043-130317-005  
32-00 Contactor (120) 30A  
Contactor (120) 50A  
Transformer  
32-40 Contactor (120) 30A  
Contactor (120) 50A  
Transformer  
A, J, S  
A, J  
Thermostat SP  
Thermostat SP  
35-42 Contactor (277) 30A  
Contactor (277) 50A  
Remote Fan Switch 3PDT  
35-43 Contactor (277) 30A  
Contactor (277) 50A  
Fan Relay  
Remote Fan Switch 3PDT  
35-44 Contactor (277) 30A  
Contactor (277) 50A  
Remote Fan Switch 3PDT  
Thermostat SP  
32-41 Contactor (120) 30A  
Contactor (120) 50A  
Transformer  
H
I
Power Fuses (Used when heater exceeds 48 Amps)  
B, K  
B, K  
Code  
Description  
Part No.  
Thermostat SP  
Fan Switch 3PDT  
45-53  
Fuse Block 600V 129-025643-001 (2)  
“30-83, 30-23, 35-23, 40-23” Fuse Block 250V  
32-42 Contactor (120) 30A  
Contactor (120) 50A  
Transformer  
Remote Fan Switch 3PDT  
32-43 Contactor (120) 30A  
Contactor (120) 50A  
Transformer  
Fan Relay  
Fan Relay  
Remote Fan Switch 3PDT  
32-44 Contactor (120) 30A  
Contactor (120) 50A  
Transformer  
129-048473-001  
128-026510-007 (6)  
128-026510-006 (6)  
128-026510-001 (6)  
“30-83, 35-23, 40-23”  
Fuse 60 Amp  
Fuse 50 Amp  
Fuse 35 Amp  
H
I
30-23  
45-43  
35-45 Contactor (277) 30A  
Contactor (277) 50A  
Fan Relay  
C, L, T  
2.6-5kW 072-303180-011  
7.5-45kW 072-303180-001  
Remote Fan Switch 3PDT  
Thermostat SP  
All  
All  
All  
All  
All  
All  
292-057673-001  
072-303180-007  
072-303180-008  
315-304252-001  
292-057673-001  
300-049197-003  
For Contactor Rating, refer to Specification Table shown on Page 1.  
Note: Number in parentheses () in the Part Number Column indicates  
the quantity of that part required.  
B, K  
Remote Fan Switch  
Thermostat SP  
7
8
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WIRING DIAGRAMS  
C2  
Elements  
Stage 2  
Elements  
Stage 1  
Elements  
Stage 2  
Elements  
Optional Thermostat  
Built-in Or  
Field Installed  
Field Wiring  
Built-in Or Field Installed  
Factory Wiring  
T1T2T3  
T1T2T3  
C2  
Motor  
3Ø  
C1  
Contactor  
Stage 1  
Fuses  
KTK-3  
Fan Relay  
Motor  
3Ø  
C3  
C2  
Optional Thermostat  
Built-in Or  
T1T2T3  
C2  
T1T2T3  
Contactor  
Field Installed  
1
3
2
8
Standard Motor Connection  
C1  
Contactor  
Cutouts  
T1 T2 T3  
C2  
T1 T2 T3  
C3  
Contactor  
(Typ.)  
C1  
7
9
10  
12  
Cutouts  
2
8
1
3
7
Motor  
3Ø  
11  
Fuses KTK-3  
Fuses  
9
10 11  
C1  
12  
Fuses  
(When Req'd)  
Optional Summer  
Fan Switch  
(When Req'd)  
AL3  
BL3  
BL2  
AL2  
AL1  
To Elements  
Stage 1  
To Elements  
Stage 2  
AL3  
BL3  
Motor  
3Ø  
Built-in Or  
AL2  
AL1  
Field Installed  
BL1  
BL2  
Summer Fan Switch  
Field Installed  
Optional Disconnect  
Switch Built-in Or  
Field Installed  
BL1  
Note: Heater Requires  
Fan Relay For 480V Motors  
(See Fig. R)  
Optional Disconnect  
Switch Built-in Or  
Field Installed  
T1 T2  
C1  
T3  
T1 T2  
C2  
T3  
L1L2L3  
L1 L2 L3  
Not For Use With 480V  
3 Phase  
60 HZ Power  
Built-in Or Field Installed  
Factory Wiring  
34-41 34-42 34-44  
Standard Motor Connection  
3 Phase,  
60 HZ Power  
34-43, 35-43 34-45, 35-45  
Figure Q  
Figure R  
Field Installed  
Built-in Or Field Installed  
Factory Wiring  
PRI.  
PRI. XFMR 120V SEC.  
24V SEC.  
MOTOR  
Elements  
Field Installed  
Built-in Or Field Installed  
Factory Wiring  
Elements  
Stage 1  
VOLT. LEAD CLRS. LEAD CLRS. LEAD CLRS.  
3Ø  
Elements  
Stage 2  
Elements  
H1  
H2  
X1 X2  
X1  
X2  
208 BLK RED BLK WHT YEL BLU  
240 BLK ORG BLK WHT YEL BLU  
480 BLK BLK/RED BLK WHT YEL BLU  
Stage 2  
Warning - First Stage Of  
Thermostat Must Be  
Connected To Terminals C1  
& C2 To Insure That Motor  
Will Be Energized With First  
Stage Heat Operation  
Stage 1  
T1T2T3  
C3  
C2  
C3  
C4  
Transformer  
Color Code Index  
T1T2T3  
T1T2T3  
T1T2T3  
C2  
C2  
Contactor  
Contactor  
(Typ.)  
Contactors  
C2  
C1  
C1  
Cutouts  
XFMR  
C1  
Cutouts  
C3  
Warning - First Stage Of  
Thermostat Must Be  
X1  
H1  
X2  
X1  
X2  
Stage 1  
Stage 2  
Fan  
Note: For Single Stage  
Thermostat, See Fig. J  
Fuses KTK-3  
Fuses  
(When Req'd)  
C1  
Motor  
3Ø  
XFMR  
Connected To Terminals C1 &  
Heat  
Fan  
Stage 1  
Stage 2  
C2 To Insure That Motor Will  
Be Energized With First Stage  
Heat Operation  
H2  
H1  
H2  
Fuses KTK-3  
Fuses  
BL3  
BL2  
AL3  
AL2  
AL1  
(When Req'd)  
Transformer  
Color Code Index  
2 Stage Thermostat  
(By Others)  
2 PDT Switch  
(By Others)  
2 Stage Thermostat  
(By Others)  
AL3  
BL3  
BL2  
AL2  
AL1  
BL1  
PRI.  
PRI. XFMR 120V SEC.  
24V SEC.  
Alternate Customer Hook Up (1 Stage)  
Thermostat  
VOLT. LEAD CLRS. LEAD CLRS. LEAD CLRS.  
BL1  
Jumper  
Disconnect  
Switch Built-in Or  
Field Installed  
H1  
H2  
X1 X2  
X1  
X2  
C1  
Jumpers  
Disconnect  
Switch Built-in Or  
Field Installed  
C4  
C2  
C3  
208 BLK RED BLK WHT YEL BLU  
240 BLK ORG BLK WHT YEL BLU  
480 BLK BLK/RED BLK WHT YEL BLU  
L1L2L3  
Fan  
L1 L2 L3  
Thermostat  
W/sub-base  
(By Others)  
1
2
3
4
Heat  
3 Phase  
60 Hz Power  
32-00 30-00  
3 Phase  
60 HZ Power  
30-43 32-43  
Figure S  
Figure T  
Warning - First Stage Of Thermostat  
Must Be Connected To Terminals C1 & C2  
To Insure That Motor Will Be Energized  
With First Stage Heat Operation  
Elements  
Stage 1  
Elements  
Stage 2  
Elements  
Warning - First Stage Of Thermostat  
Must Be Connected To Terminals C1 & C2  
To Insure That Motor Will Be Energized  
With First Stage Heat Operation  
Elements  
Motor  
3Ø  
Fan  
Relay  
Stage 2  
Stage 1  
Field Installed  
Built-in Or  
Note: For Single Stage  
Thermostat, See Fig. M  
Fuses  
KTK-3  
C3  
Field Installed  
Factory Wiring  
C4  
C3  
C2  
C2  
T1T2 T3  
C1  
T1T2 T3  
Contactor  
T1T2 T3  
C2  
T1T2T3  
Cutouts  
(Typ.)  
C3  
C2  
Contactors  
C1  
C1  
Cutouts  
Stage 1  
Heat  
Fan  
Stage 1  
Stage 2  
Motor  
3Ø  
Fan  
C1  
Fuses  
(When Req'd)  
Stage 2  
Fuses KTK-3  
Fuses  
(When Req'd)  
AL3  
BL3  
BL2  
Control Power  
(By Others)  
AL2  
AL1  
2 Stage Thermostat  
(By Others)  
AL3  
BL3  
BL2  
2 PDT Switch  
(By Others)  
AL2  
AL1  
BL1  
2 Stage Thermostat  
(By Others)  
BL1  
Alternate Customer Hook Up (1 Stage)  
Thermostat  
Optional Disconnect  
Switch Built-in Or  
Field Installed  
Jumper  
Optional Disconnect  
C1  
Jumpers  
Switch Built-in Or  
Field Installed  
C4  
Field Installed  
Built-in Or Field Installed  
Factory Wiring  
L1 L2 L3  
Fan  
L1 L2 L3  
C2  
C3  
Thermostat  
W/sub-base  
(By Others)  
1
2
3
4
Heat  
3 Phase,  
60 HZ Power  
3 Phase  
60 HZ Power  
34-43 35-43  
31-00 33-00  
Figure U  
Figure V  
Elements  
Warning - First Stage Of Thermostat  
Must Be Connected To Terminals C1 & C2  
To Insure That Motor Will Be Energized  
With First Stage Heat Operation  
Elements  
Stage 2  
Field Installed  
Built-in Or Field Installed  
Factory Wiring  
PRI.  
PRI. XFMR 120V SEC.  
24V SEC.  
VOLT. LEAD CLRS. LEAD CLRS. LEAD CLRS.  
Elements  
Stage 2  
Elements  
H1  
H2  
X1 X2  
X1  
X2  
Stage 1  
208 BLK RED BLK WHT YEL BLU  
240 BLK ORG BLK WHT YEL BLU  
480 BLK BLK/RED BLK WHT YEL BLU  
Transformer Color Code Index  
Field Installed  
Fan  
Relay  
Built-in Or  
Field Installed  
Factory Wiring  
Stage 1  
T1T2T3  
C3  
C4  
C2  
C3  
C4  
T1T2 T3  
T1T2 T3  
T1T2T3  
C2  
C2  
Contactor  
(Typ.)  
Contactor  
(Typ.)  
C1  
C2  
C1  
Warning - First Stage Of  
Thermostat Must Be Connected  
To Terminals C1 & C2  
Cutouts  
Cutouts  
C3  
C3  
X1  
H1  
X2  
H2  
C1  
Heat  
Stage 1  
Motor  
3Ø  
C1  
Motor  
3Ø  
To Insure That Motor Will  
Heat  
Fan  
XFMR  
Stage 1  
Stage 2  
Fan  
Be Energized With First  
Stage Heat Operation  
Stage 2  
Fuses KTK-3  
Fuses  
Fuses KTK-3  
Fuses  
2 PDT Switch  
(By Others)  
2 Stage Thermostat  
(By Others)  
AL3 (When Req'd)  
BL3  
BL2  
(When Req'd)  
AL2  
AL1  
2 Stage Thermostat  
(By Others)  
BL3  
BL2  
AL3  
2 PDT Switch  
(By Others)  
AL2  
AL1  
BL1  
Alternate Customer Hook Up (1 Stage)  
BL1  
Alternate Customer Hook Up (1 Stage)  
Thermostat  
Jumper  
Control Power  
Thermostat  
Jumper  
(By Others)  
C1  
C4  
C2  
C3  
Disconnect  
Switch Built-in Or  
Field Installed  
Jumpers  
C1  
C4  
C2  
Optional Disconnect  
Switch Built-in Or  
Field Installed  
Jumpers  
L1 L2 L3  
Fan  
Thermostat  
W/sub-base  
(By Others)  
1
2
L1 L2  
L3  
Fan  
Thermostat  
W/sub-base  
(By Others)  
1
2
3
4
Heat  
3 Phase  
60 HZ Power  
3
4
Heat  
C3  
3 Phase  
60 HZ Power  
31-45 33-45  
30-45 32-45  
Figure X  
Figure W  
9
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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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