Refitting The Main Pcb Assembly Into The Top; Connecting The Lonworks Network Wiring - Honeywell Apex Technical Handbook

MAN0604_Issue 09_02-2013
2110M8030
(5) Reconnect the flying lead plug and socket connecting the Main PCB to the top.

3.3.4 Refitting the Main PCB Assembly into the Top

(1) Refit the Main PCB Potted assembly with Communication Board into the top.
Reverse the removal procedure. The assembly should be fitted so that the communications
board is on the same side as the LCD display with the ribbon cable at the top.
(2) Refit the PCB Baffle.
Caution: When refitting the parts into the top take care not to damage the flying lead
plug assembly wires.
Ensure that the vertical part of the baffle goes between the Main PCB and the flying lead
(see diagram).
Push the Communication Board earth lead through the top middle hole in the baffle.
Secure the earth lead under one of the two baffle securing screws. Tighten the screws to
1.0Nm (0.74 foot-pounds).

3.3.5 Connecting the LonWorks Network Wiring

(1) Fit and connect the communication network field wiring to SK4 in the base of the
Transmitter Unit.
Refer to the table and diagram for wiring details. Use either:
Conduit - using one or both of the 3/4 NPT conduit entries. Ensure that a conduit sealing
fitting is installed within 18" of the enclosure on all conduit runs.
Cable - using any suitable flameproof cable entry device certified as Equipment to Directive
94/9/EC (ATEX).
Note: All unused cable/conduit entries must be sealed with a suitable certified sealing plug (one
plug is supplied with the Apex Transmitter Unit).
3. inSTAllATiOn
Top, middle
hole
PCB baffle
Main PCB
Flying lead
Main PCB
Potted assembly
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Apex