Echo 8870 Connect Multiple Distribution Panels, Step, DIAGRAM 5 - Multiple Distribution Panels

Step 7

CONNECT MULTIPLE DISTRIBUTION PANELS

1.MAKE SURE THAT ALL SWITCHES IN THE DISTRIBUTION PANEL ARE OFF!

2.If more than one Distribution Panel is used in the thermostat network, the communication lines must be daisy-chained together.

• Use the wire colors shown in DIAGRAM 5 to help ensure proper, consistent connections.

DIAGRAM 5 – Multiple Distribution Panels

POWER RX TX		RX TX RX TX
	DATA	ENABLE	DATA
	RS-485 RS-485 RS-232
Model 8811 Protocol Adapter
Power
7.5VAC	RS-485 RS-485			RS-232
	BLU/WHT			BLU/WHT
	ORG/WHT			BLU
	RED/WHT			ORG/WHT
	BLK/WHT			ORG	CAT-5

WHEN CONNECTING MULTIPLE DISTRIBUTION PANELS, CONNECT THE "REF" TERMINALS FOR EACH THERMOSTAT TO THE "REF" TERMINAL OF THE RESPECTIVE DISTRIBUTION PANEL AND CONNECT THE REF TERMINALS OF EACH DISTRIBUTION PANEL TO EACH OTHER.

		ORG	ORG/WHT	BLU	BLU/WHT	ORG
						ORG/WHT
						BLU
						BLU/WHT
						GRN/WHT
		A+ A-		B+ B- REF
A+	A
A-	ON	OFF				OFF	ON
B+	B
B-	ON	OFF				OFF	ON
PWR
R
C

A

B

PWR

A

B

R B- B+ A- A+

A+ A- B+ B- R

CAT-5
	ORG	ORG/WHT	BLU	BLU/WHT	GRN/WHT
	A+ A-		B+ B-		REF
A						A
ON	OFF
					OFF	ON
B
						B
ON	OFF
PWR					OFF	ON

A

B

B- B+ A- A+

DISTRIBUTION PANEL #1 DISTRIBUTION PANEL #2

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