Chromalox VUH-C-07 Instruções de instalação e identificação de peças de renovação - Página 3
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5. Rough-in wiring to heater. See Table 2 for line amperes, rec-
ommended wire size and conduit size.
6. Wire heater per wiring diagram supplied with this instruction
sheet.
Note: Power relay(s) are provided as standard on all heaters.
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.
Transformer Color Code Index
PRI XFMR
120V SEC.
24V SEC.
Elements
VOLT
LEAD CLRS
LEAD CLRS
LEAD CLRS
H1
H2
X1
X2
X1
X2
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
Cutout
T1
Contactor
C1
L1
X1
X2
XFMR
XFMR
Fusing
Optional
H1
H2
TB2
C1
C2
Thermostat
(By Others)
Customer Wiring
Factory Wire
Customer Wiring
Factory Wire
Elements
Cutout
T1
T2 T3
Contactor
C1
L1
L2 L3
L1
L2
L3
Thermostat
TB2
C1
C2
(By Others)
Customer Wiring
Elements
Factory Wire
2 PDT Switch
(By Others)
T1
T2 T3
Thermostat
Contactor
C1
(By Others)
L1
L2 L3
Heat
Cutout
3ø Jumper
Fan
Hook-Up
TB1
C4
TB2
L1
L2
L3
T4
C2
C1
Optional Heat Recovery Switch
(By Others)
MAINTENANCE
WIRING DIAGRAMS
208 - 240V Motor
277V Motor
Hook-Up
Hook-Up
BLU
BLK
M
M
BLK
T1
WHT
YEL
RED
480V Motor
Hook-Up
RED
T2
T3
BLK
M
L2 L3
WHT
3ø Jumper
T1
Hook-Up
To Contactor
1ø Jumper
TB1
L1
L2
L3
T4
Hook-Up
3ø
Power
60 HZ
L1 L2 L3 T4
Fused Switch
(By Others)
1ø Power
Figure 3
277V Motor
208 - 240V Motor
Hook-Up
Hook-Up
BLK
BLU
M
BLK
M
T2
T1
WHT
YEL
RED
480V Motor
Hook-Up
RED
BLK
M
WHT
T1
T2
3ø Jumper
Hook-Up
To Contactor
1ø Jumper
Hook-Up
TB1
T4
3ø
Power
60 HZ
L1 L2 L3 T4
Fused Switch
(By Others)
1ø Power
Figure 5
208 - 240V
Motor
Hook-Up
BLK
BLU
M
WHT
YEL
RED
T1 T2 T3
Contactor
C3
L1
L2 L3
To Contactor
1ø Jumper
Hook-Up
3ø
Power
L1 L2 L3 T4
TB1
60 HZ
Fused Switch
1ø Power
(By Others)
Figure 7
8. Air diffusers for deflecting the air are optional. See Instruction
Sheet PF449 for installation instructions.
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.
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.
Customer Wiring
Factory Wire
BLK
T2
BLU
YEL
T2
Thermostat
TB2
C1
C2
(By Others)
TB1
Transformer Color Code Index
PRI XFMR
120V SEC.
LEAD CLRS
LEAD CLRS
VOLT
H1
H2
X1
BLK
208
BLK
RED
BLK
240
BLK
ORG
BLK
277
BLK
BRN
BLK
480
BLK
BLK/RED
BLK
Customer Wiring
Factory Wire
2 PDT Switch
(By Others)
BLU
Thermostat
YEL
(By Others)
Heat
Fan
C4
TB1
Note: For 208-240V motor wiring, red and yellow motor wires to be connected at T2
terminal.
MOTOR LUBRICATION
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.
Note: All fan motors are totally enclosed and internally thermal overload protected.
208 - 240V Motor
Hook-Up
Elements
BLU
BLK
M
WHT
YEL
RED
Cutout
T1
T2 T3
Contactor
C1
L1
L2 L3
3ø Jumper
Hook-Up
TB1
L1
L2
L3
T4
3ø
Power
60 HZ
Control
Power
Fused Switch
(By Others)
(By Others)
Figure 4
24V SEC.
208 - 240V
Elements
Motor
LEAD CLRS
Hook-Up
X2
X1
X2
BLK
WHT
YEL
BLU
WHT
YEL
BLU
M
WHT
YEL
BLU
WHT
WHT
YEL
BLU
RED
Contactor
Cutout
T1
T2 T3
T1 T2 T3
XFMR
C1
C3
X1
X2
L1
L2 L3
L1
L2 L3
H1
H2
3ø Jumper
Hook-Up
TB1
L1
L2
L3
T4
XFMR
TB2
TB2
C2
C1
Fusing
3ø
Optional
Power
60 HZ
Optional Heat Recovery Switch
Fused Switch
(By Others)
(By Others)
Figure 6
277V Motor
Hook-Up
M
BLK
BLK
T1
T2
480V Motor
Hook-Up
RED
BLK
BLU
M
WHT
YEL
T1
T2
To Contactor
1ø Jumper
Hook-Up
L1 L2 L3 T4
TB1
1ø Power
277V Motor
Hook-Up
M
BLU
BLK
BLK
T1
T2
YEL
480V Motor
Hook-Up
RED
BLK
BLU
M
WHT
YEL
T2
T1
To Contactor
1ø Jumper
Hook-Up
L1 L2 L3 T4
TB1
1ø Power