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Building Technologies
Network nodes with gateway WTX16…
CE1N2878en
HVAC Products
14.07.2005
State of the
system
Display Explanation
Remote access
C
When, from a PC, the WT…16 is accessed with
a WTZ.RM radio module, symbol “ “ will appear
High-speed
mode
For example
M
When all WTT… have their receivers continu-
ously on so that all new data can immediately
be exchanged on the network, 2 dots will ap-
pear in the upper half of the display
Engineering notes
For detailed engineering instructions, refer to the Siemeca™ Engineering Manual
J2870.
Notes on Mounting and Commissioning
For mains-powered WTX16…. network nodes, the mains connections are to be made
first at the selected mounting positions (typically on every second floor, mounting height
≥
2 m).
S
N
L
R1 ... Rn
M1 M2
S switch
L, N
AC 230 V mains supply
M1, M2 M-Bus output
R1…Rn optional
interface(s)
CAUTION:
Connect the mains cable to
the power supply unit only!
1
2
3
1 Mains connection L and N
2 Permanently installed mains cable (no flexible power cable!)
3 Extra insulation (shrink sleeve)
Connect the AC 230 V power supply line to the power pack of the
WTX16… in the following order: Remove the upper housing section of
the WTX16… from the base. For that purpose, remove the 2 cable
connections (power supply (4) and M-Bus (6)) between gateway and
base. Then, use a suitable tool (screwdriver or similar) to slightly open
one of the two lateral fixing levers so that upper housing section and
base can be separated. Then, the top section of the WT…16 is to be
fitted using 2 dowels and screws (spacing of dowels is 184 mm with
the WTX16…).
Connection of the AC 230 V power line to the power pack of the WTX16… is to be
made as follows:
A 2-core mains cable (L and N) has to be preinstalled at the mounting site already. The
power pack must be connected by qualified staff. The cores must be sheathed with the
en-closed insulating sleeves to ensure compliance with safety class II. Then, the live (L)
and neutral (N) conductors must be connected to terminal “IN” of the power pack.
Connection diagram
Mains connection
