Enclosure Installation
Version 3.7 Telephone Access System Installation and Operation Manual 29 (119)
LT-969 Copyright January 2017
7. Screw the lower two screw at the bottom of the trim ring halfway into the
wall.
8. Tighten the two screws into place.
2.3 Installing the Heater
For temperatures where the Telephone Access System operates below 0°C
(32°F) at any time, a heater must be installed inside the Universal enclosure as
shown in Figure 4.
For additional information refer to LT-653 TH-102 Heater Installation
Instructions.
Figure 4. Heater TH-102 Installation Location
To install the heater
1. Place the TH-102 Heater into the bottom left hand corner of the Universal
enclosure and secure using the two supplied spacers and two hex nuts.
2. Connect the TH-102 heater to the PS-24 Transformer 24 Vac terminal
screws using a pair of #18 AWG wires.
Note: The transformer must be installed outside the enclosure.
24V AC
PS-24 TRANSFORMER
18 AWG
TWISTED PAIR
120V AC
60 HZ
UNIVERSAL
ENCLOSURE
TH-102 HE ATER
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