Athena Technologies OTC25 N User Manual

Page of 24
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)