Antenna - Honeywell CENTRA LINE MERLIN N Series Manual

Wiring Topology
Only daisy-chain wiring topology is allowed. Other wiring
topologies (such as, star wiring, mixed star wiring, and
daisy chain wiring) are prohibited. This is to avoid
communication problems of the physical layer. See
and
Fig. 25.

Antenna

MERLIN NX IP and MSTP VAV controllers has a local
rubber antenna included in the kit. The antenna facilitates
wireless communication via Wi-Fi and Bluetooth with other
devices. If the MERLIN NX IP and MSTP VAV controller is
mounted inside a cabinet/enclosure and you are using the
local antenna, use an enclosure that is made of a non-
metallic material to achieve a reliable wireless signal.
Replace the local antenna with the Remote antenna when
an extended range is needed or when the MERLIN NX IP
and MSTP VAV controller is mounted in a metal
cabinet/enclosure. The Remote antenna has a cable that
connects to the MERLIN NX IP and MSTP VAV controller,
and the antenna mounted outside the cabinet/closure.
When the MERLIN NX IP and MSTP VAV controller are
mounted inside a metal cabinet/enclosure, the Remote
Antenna is required to achieve a reliable wireless signal.
Installing the Local Antenna
Insert local antenna terminal nut into the SMA con-
1.
nector.
Tighten by turning the base of the antenna clockwise.
2.
SMA Connector
Fig. 19. Installing a Local Antenna
Installing the Remote Antenna
Uninstall the Local antenna by turning the base of the
1.
antenna counter-clockwise.
Place the Remote antenna where the signal reception
2.
is good.
Safely route the Remote antenna wire terminal nut to
3.
the MERLIN NX IP and MSTP VAVcontroller.
Insert the wire terminal nut into the SMA connector.
4.
MERLIN NX IP AND MST/TP VAV CONTROLLER - INSTALLATION INSTRUCTIONS
Local Antennae
Tighten the wire terminal nut by turning the nut clock-
5.
wise. Do not over-tighten.
Fig. 24
SMA Connector
Terminal nut
Fig. 20. Installing a Remote Antenna
Remote Antenna Placement
• Place and align the antenna in a way that the Wi-Fi
signal does not interfere with many obstacles.
Table 10. types of building materials and range
Wall Material
Wood, drywall, glass
Brick, Particle board
metal, steel-reinforced concrete wall
• Make sure that the antenna is installed perpendicular to
the surface for a good Wi-Fi signal.
• The antenna has a strong signal transmission and
reception from the side. See figure below. Position the
sides of the antenna towards the device it is
communicating with (e.g WiFi Node).
Fig. 21. Remote Antennae Placement
19
Remote
Antennae
reduction
Range
Reduction
0-10%
5-25%
10-90%
EN1Z-1076GE51 R1021