Greenheck WD Series - End Switch Kit (452723) User Manual
End switch kit, Field installation instructions, Instructions
These instructions apply to the field installation of
end switch kits on Greenheck model WD Backdraft
Dampers. These end switch kits can be used in
conjunction with MP-100, MP-200, and MP-300
Series actuators.
End switches are typically wired to a fan and/or to a
light serving as an open/not open indicator. When the
damper is powered open, one of the damper blades
makes contact with the spring rod of the end switch
which in turn makes a connection allowing power
to flow to the fan and/or light. This set up would be
used when it is desirable to ensure that the damper
is fully open before the fan starts.
When the end switch is utilized to delay start
up of Vari-Green® or other ECM fan motors
(electronically commutated motor), a magnetic fan
starter is required.
Instructions:
1. Position end switch such that the back side of
damper blade trips the spring rod.
2. Mount end switch bracket to damper frame or
ductwork using
#10 x
1
⁄
2
in. self-drilling sheet metal screws
Damper Frame
1
⁄
2
in.-14 NPSM
Damper
Blade
Damper
Tie Bar
Damper Frame
1
⁄
2
in.-14 NPSM
Damper
Blade
Damper
Tie Bar
Spring Rod
Spring Rod
2
3
3
4
1
2
3
3
4
1
End Switch Installation On
WD-100 Series Dampers
Damper Frame
1
⁄
2
in.-14 NPSM
Damper
Blade
Damper
Tie Bar
Damper Frame
1
⁄
2
in.-14 NPSM
Damper
Blade
Damper
Tie Bar
Spring Rod
Spring Rod
2
3
3
4
1
2
3
3
4
1
End Switch Installation On
WD-200 & 300 Series Dampers
Document Number 452723
End Switch Kit
For use on WD series Dampers
Part # Qty.
Description
1
1
End switch mounting bracket
2
1
End switch
UL/CSA Rating L67
15 Amps: 125, 250, or 480 VAC
0.25 Amps: 250 VDC
0.50 Amps: 125 VDC
3
2
#6-32NC x 11/2 in. machine screws with
nuts (packaged in end switch housing)
4
2
#10 x 1/2 in. self-drilling sheet metal
screws
Field Installation Instructions
Copyright © 2014 Greenheck Fan Corporation
#452723 End Switch Rev 5 April 2014
Common
L1
Wiring Illustration
End
Switch
M
Green
Fan or
Light
N.C.
N.O.
L2
Damper
Actuator
Wiring Illustration
Note: Some actuators are multi-tap, use correct connections per
actuator wiring diagram.
®
Optional transformer for
277, 380, 575 or 600 volts
(120V actuator required)
Optional transformer for
277, 380, 575 or 600 volts
(120V actuator required)
Blue
24V Single Voltage Actuator
460V Single Voltage Actuator
White
Brown
Brown
110/115/120V Dual Voltage Actuators
Blue
208/220/230/240V Dual Voltage Actuators
Alternative wiring diagram