Aerco E8 User Manual

06/05/13 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 • Ph: 800-526- 0288 Page 73 of 112
GF-115-C
Modulex E8 Controller and BCM
Operations and Maintenance Manual
OMM-0084_0D
Figure
7-
11.
EMS
/BAS Master Controlling Modulex Boiler Slaves
TO OTHER NETWORK
BOILER SLAVES
(3 -
9)
(SEE NOTE 3)
EMS MASTER
T+/R+
T-/R-
RS485 PORT
SHIELD
+
Y2-2 – MODBUS “A” (-)
(PART OF BCM CONN. Y2)
MODULEX BOILER SLAVE #1
NOTES: 1. IF EMS MASTER CONTAINS A 4-WIRE RS485 PORT, TIE THE TWO POSITIVE (+) AND NEGATIVE (-) LEADS TOGETHER AS SHOWN IN DETAIL “A” 2. IF EMS MASTER CONTAINS ONLY A RS232 PORT, A RS232-TO-RS485 CONVERTER WILL BE REQUIRED. 3. THE LAST BCM SLAVE ON THE RS485 LOOP MUST HAVE ITS TERMINATION RESISTOR ENABLED. ALSO, A 1K OHM BIAS RESISTOR
MAY BE REQUIRED. CHECK WITH THE EMS
MANUFACTURER.
SEE NOTES 1 & 2
DETAIL “A”
(SEE NOTE 1)
T+
T-
4-WIRE RS485 PORT
SHIELD
R+
R-
T+/R+
T-/R-
Y2-1 – MODBUS “B” (+)
BCM
+
Y2-2 – MODBUS “A” (-)
(PART OF BCM CONN. Y2)
MODULEX BOILER SLAVE #2
Y2-1 – MODBUS “B” (+)
BCM
Figure 7-11:

Aerco E8 Specifications

General

Brand	Aerco
Model	E8
Category	Controller
Language	English