Gf-122 aerco xpc gateway – AERCO XPC GATEWAY Communications User Manual

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GF-122 AERCO XPC GATEWAY

1. Make the connections between the BMS II and XPC Gateway as instructed in subsections 3.3.1.1 or

3.3.1.2.

2. Refer to Figure 3-15 and make connections between Boiler Control Module (BCM) of the Modulex

Boiler as follows:

(a) Connect terminal 1 of BCM connector Y2 to the 485 B terminal on the BMS II RS485 connector

JP6.

(b) Connect terminal 2 of BCM connector Y2 to the 485 A terminal on the BMS II RS485 connector

JP6.

3. Connect the BCM Controllers in a “Daisy-Chain” configuration. Tie all shields together between the

BCMs on the network.

4. On the last BCM module in the daisy chain connect the termination jumper.

5. On the BMS II, activate the 2 bias DIP switches by pushing them both down (towards the PCB).

3.3.4 BMS II Setup For Remote Setpoint Control From The XPC Gateway

For remote setpoint control of a BMS II, set up the wiring connections as described in subsection 3.3.1.
Upon completion of all wiring connections, configure the BMS II as follows:

NOTE

Refer to AERCO Instruction Manual GF-124 for additional information on
BMS II keypad functions and displays.

1. Press the

MENU key and go to the SETUP MENU.

2. P

ress the ▲ arrow key. ENTER PASSWORD will be displayed requesting the valid password to be

entered.

Using the ▲ and ▼ arrow keys, enter the valid level 1 password (159) and then press the

ENTER

key. LEVEL 1 PASSWORD will be displayed.

4. Press the

MENU key and go to the FIELD ADJUST MENU.

Using the ▲ or ▼ arrow key, go to the HEADER SET MODE option.

6. If REMOTE SETPOINT is not displayed in the second line of the display, press the

CHANGE key and

select REMOTE SETPOINT

using the ▲ or ▼ arrow key. Press the

ENTER key to store the

selection.

Next, press the ▲ arrow key and go to the REMOTE SIGNAL option.

8. If MODBUS is not displayed in the second line of the display, press the

CHANGE key and toggle the

display to MODBUS. Press the

ENTER key to store the selection.

The BMS II is now set up for Remote Setpoint control from a XPC Gateway. In the event of control signal
interruption from the XPX, AERCO recommends that the FAIL SAFE MODE option in the
CONFIGURATION MENU be set to CONSTANT SETPOINT with the INTERNAL SETPT (FIELD
ADJUST MENU) set to the desired temperature.