MERLIN NX IP AND MST/TP VAV CONTROLLER - INSTALLATION INSTRUCTIONS
3
EN1Z-1076GE51 R0722
Dimension
Fig. 2. Dimensions
NETWORK SECURITY
WARNING
CentraLine hereby expressly states that the MERLIN
NX IP and MSTP VAV controllers are not inherently
protected against cyber-attacks from the Internet and
that, it is therefore intended solely for use in private,
protected networks.
Unprotected Internet connections can expose the MERLIN
NX IP and MSTP VAV controller to cyber-attacks from third-
parties who can then damage it and connected facility
components or cause them to malfunction or misuse it for
illegal purposes for which the operator may then be held
liable. When directly connected to the Internet, the MERLIN
NX IP and MSTP VAV controllers automatically become a
potential target for cyber-attacks.
To ensure a safe and reliable operation, take necessary
protective measures, such as locating BMS controls behind
a firewall and using a VPN connection for remote
maintenance. Numerous third-party manufacturers offer
suitable VPN routers.
If it is necessary for the MERLIN NX IP and MSTP VAV
controllers to be accessible from the Internet (e.g., to
perform remote maintenance), a coded VPN connection is
indispensable. Suitable VPN routers are available from
numerous third-party manufacturers in various designs for
operation at 230 V or 24 V.
GENERAL SAFETY INSTRUCTIONS
While performing any work (installation, mounting, startup),
follow all instructions provided by the manufacturer and the
safety instructions provided in this document.
— The MERLIN NX IP and MSTP VAV controllers must be
installed and mounted by authorized and trained personnel.
— If the unit is modified in any way, except by the
manufacturer, all warranties concerning operation and
safety become invalid.
— Make sure that applicable local standards and
regulations are always observed.
— Use only CentraLine supplied or approved accessories.
— Before dismantling the system, disconnect the power
supply by either removing the power terminal block from the
controller or using local isolation. Read the following
caution note carefully.
CAUTION
CAUTION
You must disconnect the power before installing,
removing, or replacing the MERLIN NX IP and MSTP
VAV controllers.
Switch off the power before you install any jumpers.
7 3/4”
(197 mm)
3 1/2”
(89 mm)
3 1/2”
(91 mm)
4 3/4”
(124 mm)
5 3/4”
(147 mm)
7”
(175 mm)
7 1/4”
(187 mm)
6”
(154 mm)
2 1/2”
(66 mm)
2”
(52 mm)
All dimensions shown are in
”
(mm).
