Landis & Gyr ULTRAHEAT T550 Installation Instructions Manual - page 3
Landis+Gyr GmbH
Subject to change without prior notice
08.05.2017
3
Fig. 6: Dimensions of the electronic unit
For wall mounting proceed as follows:
Fit the adapter plate to the wall.
Push the electronic unit onto the adapter plate.
3.4
Power supply
The calculator can be supplied with power via a battery or via
power supply modules as preferred. The power supply mod-
ules 110 V / 230 V are encapsulated and comply with safety
class II. You can modify or upgrade the modules at any time.
Fig. 7
Attention: Do not open the batteries. Do not bring
batteries into contact with water or expose to temper-
atures above 80 °C. Dispose of used batteries at
suitable collection points.
In the 110 V AC and 230 V AC versions a cable is fitted at the
factory leading outwards which must be connected to the net-
work voltage indicated. The 24 V ACDC version has connec-
tion terminals instead of a cable.
Note: The year of manufacture is characterised by:
Note: The battery lifetime is characterised for example
by:
Installing the battery
Note: Only batteries approved by the manufacturer
may be installed.
Note: In case of a meter's return via airfreight the
battery (C-cell and D-cell) has to be generally dis-
mounted and forwarded separately from the meter!
To install a battery proceed as follows:
Press the four side lugs of the housing cover inwards.
Remove the cover.
Turn the dial plate in an anti-clockwise direction until it
comes to a noticeable stop.
In order to free up the appropriate battery compartment,
move the red locking hatch accordingly.
Note: Left compartment for 2× AA-cells or 1× C-cell,
right compartment for 1× D-cell.
Note: The AA and C batteries are clicked into place in
a holder.
Insert the battery into the corresponding battery with the
correct polarity in accordance with the markings.
Turn the dial plate in clockwise direction into the starting
position.
Put the housing cover in position and press it gently until all
the lugs click into place audibly.
Installing power supply module
Note: The 110 V / 230 V connections may only be
made by an electrician.
To install a power supply module proceed as follows:
Move the red locking hatch to the left.
Move the right outside rubber sleeve upwards and out-
wards.
Pull the sealing plug.
Thread the
module’s mains voltage connetion cable
through the sleeve.
Insert the module into the right upper corner of the elec-
tronic unit.
Put the sleeve with the cable back into place from above.
Connect the conductors in line with the inscription.
Plug the connection cable for low voltages into the plug
connector on the PCB.
Note: Only use cable with a diameter of 5.0 ... 6.0 mm
for the 24 V ACDC version.
Note: The 110 V or 230 V power supply must be fused
near the meter with a 6 A separator in accordance
with the applicable safety standards. The separating
device must be marked in accordance with applicable
safety standards and be easily accessible for emer-
gencies. Protect the power supply against manipula-
tion.
Power supply module for meter exchange
Proceed as follows to exchange the meter following expiry of
the calibration validity:
Pull out the power supply module with cable and sleeve.
Install the new calculator.
Put the module in.
Note: The network does not need to be disconnected
while doing this due to safety class II.
Set date / time
Calculators with mainspower supply or battery installed at site
start with a date / time set menu directly.
Date input
Time input
Return to normal operation (manual)
Proceed as follows to set date and time:
Press button 1 until the desired value is displayed.
Press button 2. Change the values for date and time as
described in chapter 4.6 „Parameterisation“.
Electronic unit interfaces
The calculator is equipped with an optical interface in accord-
ance with EN 62056-21:2002 as standard. You can additional-
ly use up to 2 of the following communication modules for
remote reading:
Pulse module
CL module
M-Bus module G2
M-Bus module G4
M-Bus module G4 MI with 2 pulse inputs
Locking hatch
Plug connector