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VAV-SVN01E-EN
Wiring
Diagrams
Figure 22 – Fan-Powered Units (Pneumatic Controls)
NOTE:
1.
3.
Load carrying P.E. Switches or Contactors
are supplied depending upon amp drawn.
Cutout provided as standard.
Auto Reset Thermal Cutout and Manual Reset
4.
Disconnect, and Airflow Switch are optional.
Heater Line Fuses, Door Interlocking
5.
Manual Reset
Cutout
Fuse
Optional
G
TB4
Line Voltage
(See Nameplate)
G
FAN-POWERED UNITS - PNEUMATIC CONTROL -
Switch
Optional
Air Flow
STAGES
1
2
3
240
VOLTAGES
208
Auto Reset
Thermal Cutout
PE Switch
1st Stage
HEATER TERMINAL - TYPICAL OF SINGLE PHASE VOLTAGES
277
347
480
LINE
CONTACTORS
HEATER
P.E. with Magnetic Contactors (PEMA)
P.E. with Mercury Contactors (PEME)
N
L2L1 L3
G
Line Voltage
(See Nameplate)
G
N
HEATER TERMINAL - TYPICAL OF THREE PHASE VOLTAGES
FAN-POWERED UNITS - PNEUMATIC CONTROL -
Door
Optional
Switch
Disconnect
Switch
Disconnect
Door
Optional
L1 L2
with each unit (1 and 2-stage shown).
Actual heater wiring diagram is supplied
2.
FACTORY INSTALLED
FIELD INSTALLED
OPTIONAL
HEATER
CONTACTORS
P.E. with Magnetic Contactors (PEMA)
P.E. with Mercury Contactors (PEME)
2
3
480
575
208
VOLTAGES
LINE
STAGES
1
PHASE
SINGLE
L1 N - 277, 347
L1 L2 N - 208, 240, 480
L1 L2 L3 N - 208, 480, 575
Auto Reset
Thermal Cutout
P.E. Switch
2nd Stage
PE Switch
1st Stage
Switch
Optional
Air Flow
Optional
Fuse
Cutout
Manual Reset
TB4
L1
L2
L1 L2 L3
L3L2L1
Contactors
Contactors
PHASE
THREE
N
NL2
L1
N
N
N
115 to 277V
Output to Motor
115 to 277V
Output to Motor
BLK
WHT
BLK
WHT