Instruction Manual

Model CXT-IR
If a conduit run exists, a drain should be incorporated. The drain allows H
2
O condensation inside the conduit
run to safely drain away from the sensor assembly. The electrical seal fitting is required to meet the National
Electrical Code per NEC Article 500-3d (or Canadian Electrical Code Handbook Part 1 Section 18-154).
Requirements for locations of electrical seals are covered under NEC Article 501-5. Electrical seals also act as
a secondary seal to prevent water from entering the wiring terminal enclosure. However, they are not designed
to provide an absolute watertight seal, especially when used in the vertical orientation.
NOTE
A conduit seal is typically required to be located within 18" of the J-Box and Sensor
Assembly. Crouse Hinds type EYS2, EYD2 or equivalent are suitable for this purpose.
NOTE
The Detcon Warranty does not cover water damage resulting from water leaking into the
enclosure.
NOTE
Any unused ports should be blocked with suitable
3
/
4
" male NPT plugs. Detcon supplies
one
3
/
4
" NPT male plug with each J-box enclosure. If connections are other than
3
/
4
" NPT,
use an appropriate male plug of like construction material.
If the Detcon CXT-IR was ordered with battery packs, no wiring is necessary. Although an external 24V
source can be applied in some instances. If an external power source is incorporated, wire the external power
source to the Terminal Interconnect board as prescribed in Figure 13.
CAUTION
Do not apply System power to the sensor until all wiring is properly terminated
(2.6 Initial Start Up).
2.5.1 Applying Power to the Unit
CAUTION
A 24V solar panel is the most common option for supplying external power. A
solar panel will recharge the Detcon Smart Battery Pack. It CANNOT be used with
the C-cells. A 24V input with the C-cells will damage the cells.
1. Remove the junction box cover.
2. If external power is to be applied to the unit, connect incoming 24V to the terminal labeled "+" and 24V
Return to the terminal labeled "-".
3. Install the batteries.
NOTE
The safety approvals require removing entire sensor assembly to a non-hazardous area
before changing out the batteries or battery pack.
a) For units utilizing the 12V Smart Battery Pack (Figure 13), plug the battery pack into the terminal
board. If the sensor has a power switch, power will not be applied until the switch is turned on. If
the unit does not have a power switch, power will be applied, and the unit will proceed to power
up (Section 2.6).
b) If the unit utilizes the C sized lithium 3.6V batteries and battery holder, install the batteries
properly. If the sensor has a power switch, power will not be applied until the switch is turned on.
If the unit does not have a power switch, power will be applied, and the unit will proceed to power
up (Section2.6).
CXT-IR Instruction Manual Rev. 1.6 Page 13 of 44