Lennox CLIMATIC 40 User Manual page 24

ASSEMBLY AND INSTALLATION INSTRUCTIONS
DC41.
Installation instructions:
. Pass the telephone cable through the hole in the rear of the case.
2. Fasten the rear of the case to the box using the round-head screws.
3. Connect the telephone cable to the RJ2 terminal of the DC4.
4. Rest the front panel on the rear of the case and fasten the assembly using the countersunk screws, as shown in Fig. 8.3.
5. Finally, apply the click-on frame.
Electrical connections:
1. Disconnect the power supply before working on the DC41 during the assembly, maintenance and replacement operations.
2. Make the connection between the power supply "DT41" and the terminal DC41 using the telephone cable (80 cm).
supplied. If the cable is not long enough, use a pin-to-pin telephone cable with a maximum length of 0 m.
DC4
Max. L=10m.
DT4
93 94
- Connect from the electrical box in the outdoor unit to DT4 device:
. 91 and 92 terminal blocks respectively to Tx+ and Tx -. (Twisted pair of communications).
. 93 and 94 terminal blocks respectively to GO and G. (Twisted pair of power 24VAC).
. Borna 90 to GND. (shield).
- Type of cable: 2 twisted pairs AWG20
56.2
Fig. 8.4
Thelefone cable
L. max.=100m.
Separate cables of the DC4 of inductive loads, cables
and power devices (contactors, etc.) in order to prevent
electromagnetic interferences.
Not include together power and communications cables
92
9
90
23
A
Fig. 8.3