Honeywell Farenhyt ECS Series Manual page 40

ECS Device Installation
Wiring Lengths
Number Of Speakers
@1/2 W
10
20
30
40
52
80
100
150
200
250
NOTE: The above table assumes a uniform distribution of the speakers, and that a max of 20% voltage drop on the last speaker is allowed.
Class B
Figure 4.42 illustrates how to wire speakers to the control panel using Class B supervision.
Class A
Figure 4.43 illustrates how to wire speakers to the control panel using Class A wiring.
40
Total Load
@1 W Vrms Watts
5 25Vrms 5W
10 25Vrms 10W
15 25Vrms 15W
20 25Vrms 20W
26 25Vrms 26W
40 25Vrms 40W
50 25Vrms 50W
75 25Vrms 75W
100 25Vrms 100W
125 25Vrms 125W
Table 4.3 ECS-125W Wire Lengths
CIR CU IT 4 C IR C U IT 3
+ IN – + O U T – + IN – + O U T
supervised,
power-limited
Figure 4.42 Class B Speaker Configuration
supervised,
power-limited
Figure 4.43 Class A Speaker Configuration
Wire Distance in Feet
18 AWG 16 AWG
3900 6200
2125 3380
1460 2320
1100 1750
760 1200
550 875
450 715
300 476
225 357
180 285
CIR CU IT 2 C IR CU IT 1
– + IN – + O U T – + IN – + O U T –
CIRC U IT 1
+ IN – + O U T
ECS Series Manual — P/N 151455:H 2/15/2022
Installing the ECS-125W
14 AWG 12 AWG
9860 15680
5375 8540
3690 5870
2780 4420
1920 3050
1390 2200
1130 1800
753 1200
565 900
452 720
15kΩ EOL
–