Roof Link; Bacnet And Lon Network Communication; Dirty Filter Switch; Fig. 6 - Network Communication Board - York eco2 050 Installation Operation & Maintenance

ROOF-LINK
Roof-Link is intended for installations that require
communication between an existing building automa-
tion system and an eco2-packaged rooftop that is not
capable of communicating via the optional BACnet or
LON protocols. Roof-Link offers a third method of
interfacing that provides hard-wired communication
between the building automation system and the eco2
unit through Þ ve analog inputs, three analog outputs,
and four binary inputs/outputs.

BACNET AND LON NETWORK COMMUNICATION

Te eco2 rooftop unit can communicate to any building
automation system. There are three options available:
BACnet Internet Protocol (Ethernet), BACnet MSTP
FIG. 6 – NETWORK COMMUNICATION BOARD
YORK INTERNATIONAL
BACKNET IP, BACKNET MSTP, LON
FIELD CONTROL WIRING
BACKNET IP,
CARD LOCATION
LON OR BACKNET MSTP
CARD LOCATION
LON OR BACKNET MSTP
CARD CONNECTION
3-WIRE CONNECTOR ON BOARD
(RS485), and LON. These options require the appli-
cation of an additional communication board to the
Primary Unit Controller (See Figure 6)

DIRTY FILTER SWITCH

On units with a dirty Þ lter switch option, an adjustable
differential pressure switch is installed to monitor the
pressure drop across the Þ lters. When the pressure drop
across the Þ lters exceeds the setting of the switch the
switch closes sending a 24-volt signal to the Primary
Unit Controller. The Primary Unit Controller posts a
trouble fault in the service memory buffer; but will not
shut down the unit.
LD09753
FORM 100.50-NOM1 (604)
BACKNET IP,
CARD CONNECTION
(CATEGORY 5 CONNECTOR)
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