2
IM-200
5. Mount door switch so it will trip to close the circuit
when the door is open. The switch may be located
so the heater will come on when the door starts to
open or when fully open at the discretion of the user.
See typical suggested installations.
Door Switch and Suggested Installations
The door switch may be installed with the switch in the
“free” position when the door is either opened or
closed. If the switch is mounted so that it is in the “free”
position when the door is open, use the normally-
closed circuit, terminals #1 and #2. If the switch is
mounted so that it is in the “free” position when the
door is closed, use the normally-open circuit, terminals
#3 and #4.
Installation #1:
Floor Level Location - Switch is in
“free” position when door is open. Use switch terminals
#1 and #2. Heater will fire when door starts to open.
Installation #2:
Overhead Location - Switch is in “free”
position when door is closed. Use switch terminals #3
and #4. Heater will fire only when door is completely
open.
Installation #3:
Overhead Location - Switch is in “free”
position when door is open. Use switch terminals #1
and #2. Heater will fire when door starts to open.
“FREE” POSITION: 360°
location on actuator shaft
ACTUATOR
SHAFT
OPERATING
HEAD: May be
relocated four
90° positions.
LEVER LOCKING
NUT: Loosen to
to relocate “free”
position of adjustable
roller lever.
TERMINAL
CONNECTIONS:
#1 & #2 Normally Closed
#3 & #4 Normally Open
DOOR SWITCH
CLAMP PLATE
ALLENHEAD SCREW:
Loosen to adjust radius
of roller lever.
1
3
⁄
16
" Min.
3" Max.
49°
49°
ADJUSTABLER
ROLER LEVER
M
AX
IM
UM
TR
AVEL
Door
Door
Track
Door
Switch
Actuated Position
Free Position
49° Max.
15° Min.
Door Switch
Trip Plate
(Fabricated and installed
by others.)
Free Position
Door Header
Door
INSTALLATION
NO. 3
INSTALLATION
NO. 1
INSTALLATION
NO. 2
Door in fully opened
position with switch
actuated
Door Switch
Door Track
Free Position
49
°
Max.
15
°
Min.
Actuated Position
2
2
1
1
1
3
3
3
1
3
4
4
OIL TIGHT DOOR SWITCH
Connect to terminal 1 and 3 on terminal strip in
unit control box.
Connect as shown when switch is released with
door in open position.
Connect as shown when switch is held with door
in open position.
