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1
Installation
Pre-Installation Instructions
1. Inspect shipping carton for obvious signs of mishandling.
2. After removing the controller from the shipping carton,
inspect it carefully for damage. Never attempt to install and
use a damaged unit.
3. Verify that the ordering code number indicated on the side of
the controller matches what was ordered.
Figure 1. Case Dimensions
Prior to mounting the OTC25 in your panel, make sure
that the cutout opening is of the right size, 3.622" x 3.622"
(92 mm x 92 mm), and deburred to enable a smooth fit.
A minimum of 5.0" (127.0 mm) of depth behind the panel
is required.
0.25"
(6.35 mm)
3.5"
(88.9 mm)
3.780"
(96 mm)
3.780"
(96 mm)
°F
ACTUAL SETPOINT 02
01
Mounting
Figure 2. Mounting Diagram
Before installing OTC25, ensure gasket seats evenly
around edges of unit and that there are no breaks or tears
in the gasket.
Insert the OTC25 through the front panel cutout, slide
mounting “U” bracket around unit and secure it with the
screws provided.
Gasket should be evenly compressed around all sides to
provide liquid-tight mounting.
0.25"
(6.35 mm)
3.5"
(88.9 mm)
3.780"
(96 mm)
3.780"
(96 mm)
ACTUAL SETPOINT HEAT
MOUNTING
SCREWS
GASKET
PANEL
BRACKET
3.780”
(96mm)
3.780”
(96mm)
0.25”
(6.35mm)
3.5”
(88.9mm)
3.780”
(96mm)
3.780”
(96mm)
0.25”
(6.35mm)
3.5”
(88.9mm)