Important; Earth Ground Connection - Irritrol Total Control Guia Del Usuario

2. Attach the wire to the ground device using a Cad-weld
ground clamps are not acceptable).
3. Measure the total resistance from the ground device to the controller ground lug using a
MeggerTM resistance measuring instrument.

IMPORTANT!

Obtaining a Megger resistance reading of 10 ohms or less is required.
NOTE:
Installation of additional grounding devices may be required to obtain 10 ohms or
less resistance. An additional ground lug is provided for this circumstance. Do not connect
the two ground wires to the same terminal.
If additional assistance is required to obtain proper grounding, contact your Irritrol
distributor or fi eld service representative.
G
N
D
SENSOR
Earth Ground Lug
Earth Ground
Connection
12"
(30.5 cm)
Valve Box
Cad-weld
Connection
6 AWG Solid 8" (20.3 cm) Minimum
Copper Wire
8'–12'
(2.4m – 3.7m)
5/8" x 8' Copper-clad
Ground Rod
TM connector (double or single lug
REMOTE REMOTE
VC/ VC/ VC/ VC/
25 26 27 28 29 30 31 32 33 34 35 36 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 37 38 39 40 41 42 43 44 45 46 47 48
COM COM COM COM
VC/ VC/ VC/ VC/
25 26 27 28 29 30 31 32 33 34 35 36 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 37 38 39 40 41 42 43 44 45 46 47 48
COM COM COM COM
GND GND RAIN RAIN
24VAC 24VAC SENSOR SENSOR
MV/ MV/ VC/ VC/ VC/ VC/
1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 10 11 12 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 13 14 15 16 17 18 19 20 21 22 23 24
PUMP PUMP COM COM COM COM
MV/ MV/ 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 10 11 12 9 10 11 12 VC/ VC/ VC/ VC/ 13 14 15 16 17 18 19 20 21 22 23 24 13 14 15 16 17 18 19 20 21 22 23 24
PUMP PUMP COM COM COM COM
WARNING
HIGH
VOLTAGE
Radius Bend
Figure 9
25