Landis+Gyr Ultracold T550 User manual

ULTRAHEAT
®
T550 (UC50…)
ULTRACOLD
®
T550 (UC50…)
Technical description
32 19 101 001 a
Datum: 05.05.2015
Landis+Gyr GmbH
Calculator T550
(UC50…)
Residential, district heating, local heating plant

Outstanding features 2/39
Outstanding features
• Also operable as combined heat / cooling meter calculator
• Mounting place of flow sensor: hot or cold side possible
• Big range of communication modules for remote readout and system integration
• 2 module slots for using 2 communication modules coincidental
• Optical interface according to EN 62056-21:2003
• Power measurement with maximum values, tariffs selectable
• Data logger for system monitoring
• 60 monthly values
• Logbook
• Battery or mains operated
• Self-diagnostics
• Available for order as cooling meter calculator with German national approval
• Available for order with one-time adjustable pulse value and mounting place of the flow
sensor
• Available for order for liquid mixtures (e. g. glycol / water)

Contents 3/39
Contents
1 General notes ____________________________________________________________5
Other available documentations ______________________________________________5
2 Safety Information ________________________________________________________6
3 Technical Data ___________________________________________________________7
4 Installation ______________________________________________________________8
Examples of installation_____________________________________________________8
4.1 Temperature sensors____________________________________________________9
4.2 Connection of flow sensor _______________________________________________10
5 Dimension of electronic unit_______________________________________________11
6 Operating elements ______________________________________________________12
6.1 LCD ________________________________________________________________13
Display values “LOOPs” ___________________________________________________13
User loop “LOOP 0“_______________________________________________________13
Service loop 1 “LOOP 1“___________________________________________________14
Service loop 2 “LOOP 2“___________________________________________________15
Service loop 3 “LOOP 3“___________________________________________________15
Service loop 4 “LOOP 4“___________________________________________________16
6.2 Previous year’s values __________________________________________________17
6.3 Monthly values ________________________________________________________17
7 Parameterisation of pulse value and mounting place of flow sensor______________17
8 Display / priority rating ___________________________________________________18
9 Power supply ___________________________________________________________18
Automatic power supply detection____________________________________________18
Power supply requirements_________________________________________________19
Power supply modules ____________________________________________________19
10 Communication _________________________________________________________20
Electronic unit interfaces___________________________________________________20
Permissible combinations of modules_________________________________________21
Terminals_______________________________________________________________22
10.1 Pulse module _________________________________________________________22
10.2 M-Bus module G4 _____________________________________________________23
10.3 M-Bus module MI with 2 pulse inputs_______________________________________23
10.4 Analog module ________________________________________________________24
10.5 Radio module 868 MHz (wireless M-Bus) ___________________________________25
10.6 GSM module _________________________________________________________26
10.7 GPRS module ________________________________________________________27
10.8 ZigBee module________________________________________________________28
11 Tariff control (optional) ___________________________________________________29
Threshold value tariff (Tariffs T2, T3, T4, T5, T6) ________________________________29
Supplied quantity of energy (tariff T7)_________________________________________29
Returned quantity of energy (tariff T8) ________________________________________29
Heat / cooling meter (tariff T9)_______________________________________________30
Tariff control via timer switch (tariff T10)_______________________________________30

Contents 4/39
Tariff control via M-Bus (tariff T11) __________________________________________ 30
Surcharge quantity tariff by means of return temperature (tariff T12) ________________ 30
Display of the tariff situation on the LCD ______________________________________ 30
12 Error messages__________________________________________________________32
13 Log functions ___________________________________________________________33
14 Data logger (optional)_____________________________________________________34
15 Additional options _______________________________________________________35
16 Order codes (type number key)_____________________________________________36
17 Additional ordering information on radio module 868 MHz (wireless M-Bus) _______38
18 Additional ordering information for glycol____________________________________39

General notes 5/39
1 General notes
Note : In the following text, the term calculator refers to both heat
meter calculator and cooling meter calculator, unless they are
otherwise differentiated.
The calculator is used as a calculator for heating or cooling consumption
measurement in systems with water.
The calculator forms the volume from the pulses of the flow sensor. The tem-
peratures of the hot and cold sides are determined using platinum resistors.
The volume of water and the temperature difference between hot and cold
side are then calculated and the product is summated.
The result is that the quantity of thermal energy consumed is displayed in the
units kWh / MWh or MJ / GJ.
Other available documentations
•Operating instructions T550 (UC50…)
•Installation instructions T550 (UC50…)
•Respective module operating and installation instruction
•Illustrated catalogue
Additional information’s are available on request.

Safety Information 6/39
2 Safety Information
The calculator may only be used in building service engi-
neering systems and only for the applications described.
The local regulations (installation etc.) must be adhered to.
Adhere to the operating conditions ac
cording to the dial
plate during use. Non-adherence can cause hazards and
the guarantee will lapse.
Guarantee and calibration validity will lapse if the calibra-
tion relevant security seals are broken.
Only clean the calculator from outside with a soft, lightly
wetted cloth. Do not use any spirit or cleaning solvent.
The 110 V / 230 V connections may only be made by an
electrician.
The calculator may only be powered up once the installa-
tion has been completed. There is otherwise a danger of
electronic shock on the terminals.
A defective or obviously damaged appliance must be di
s-
connected from the power supply immediately and re-
placed.
As far as disposal is concerned, the calculator is a waste
electronic appliance in the sense of European Directive
2012/19/EU (WEEE) and it must not be disposed of as
domestic waste.
- Dispose of the meter through the channels provided for
this purpose.
- Respect the local and currently valid legislation.
- Dispose of used batteries at the collection points pro-
vided for them.
The calculator may contain lithium batteries. Do not dis-
pose of the calculator and the batteries with domestic
waste. Observe the local stipulations and laws on disposal.
You can return the lithium batteries to the manufacturer for
appropriate disposal following use. When shipping please
observe legal regulations, in particular, those governing
the labelling and packaging of hazardous goods.
Do not open the batteries. Do not bring batteries into con-
tact with water or expose to temperatures above 80 °C.
The calculator does not have any lightning protection.
Ensure lightning protection via the in-house installation.
Only fit one compartment for the power supply. Do not
remove the red locking hatch.

3 Technical Data
General
Environment class A (EN 1434) for indoor installation
Mechanical class M1 *)
Electromagnetic class E1 *)
*) according to 2004/22/EC Directive on Measuring Instruments
Ambient humidity <93 % rel. humidity at 25 °C, without
condensation
Max. height 2000 m above sea level
Storage temperature -20 … 60 °C
Electronic unit
Ambient temperature 5 … 55 °C
Housing protection rating IP 54 according to EN 60529
Safety class
Line 110 / 230 V AC II according to EN 61558
Line 24 V ACDC III according to EN 61558
Operation threshold f. ∆T 0.2 K
Temperature difference ∆T 3 K … 120 K
Temperature measurement range 0 ... 180 °C
LCD 7 digit
Optical interface Standard, EN 62056-21
Communication Optional, e.g. M-Bus
Separability Always, optional cable length
Battery 3.6 V DC Lithium
Power supply 230 / 110 V AC 50 / 60 Hz
24 V AC / DC 50 / 60 Hz
Power input <0.8 W
Temperatur
e sensor
Type Pt 500 or Pt 100 according to
EN 60751
Pulse input
Pulse input IB / IC according to EN1434
Pulse length min. 10 ms
Pulse frequency max. 50 Hz
Pulse wire length max. 20 m (recommended)

Installation 8/39
4 Installation
Note
:
The
mounting place
and the
pulse value
of flow sensors
with pulse output must correspond to the in the calculator set va
l-
ues (see LOOP 2).
Service loop 2 “LOOP 2“
Service loop 2 displays the installation details.
Head of the loop
Mounting place of the flow sensor: cold side or
Mounting place of the flow sensor: hot side
Pulse value
Note
:
At a
heat meter calculator
or combined heat / cold meter
calculator the mounting place of the flow sensor cold side is equiv-
alent to return. The mounting place of the flow sensor hot side is
equivalent to flow.
Note
:
At a
cooling meter calculator
the mounting place of the
flow sensor hot side is equivalent to the return. The mounting place
of the flow sensor cold side is equivalent to flow.
Attention: Calculators with one-time adjustable pulse value and
adaptable mounting place being characterized by:
Attention: At calculators with one-time adjustable pulse value,
the pulse value must be adjusted during commissioning in ac-
cordance with the flow sensor and the mounting place must be
checked!
As long as the pulse value has not been set, the calculator does
not cumulated energy and volume.
The mounting place can be adapted and is fully locked by entering
the pulse value.
Examples of installation
Ball valve
Fig. 1: Installation with a ball valve (recommended up to and including N25)

Installation 9/39
Welding sleeve with pockets
Fig. 2: Installation with pockets (recommended greater than or equal to N32)
4.1 Temperature sensors
Note: The temperature sensor type PT 100 / 500 must correspond
to the information on the dial plate.
Note: If detachable temperature sensors are used they must have
their own calibration or certification of conformity!
Note: The maximum cable length of the temperature sensors is
10 m. Extension is not permitted.
•Press the 4 side lugs of the housing cover inwards and remove the cover.
•Guide the wire of the temperature sensor from the outside through the 2nd
sleeve from the left and the return sensor through the 3rd sleeve from the
left.
•Strip both wires as in the figure 3.
wire end ferrules
Fig. 3
•Connect the cores in line with the inscription printed on the meter.
The 2-wire connection occurs on terminal 5/6 and 7/8.
This also applies to a connection of 2-wire temperature sensors on a 4-wire
connection terminal.
Note: Do not connect the shielding braid on the calculator side.
•Insert the temperature sensors into the pockets, ball-valves or T-pieces.
The end of the temperature sensors must reach at least to the centre of the
pipe cross-section.
•Seal the temperature sensors to protect against manipulation.
•Put the housing cover in position and press it gently until all the lugs click
into place audibly.

Installation 10/39
4.2 Connection of flow sensor
Note: The flow sensor must be installed at the same circuit as the
temperature sensors.
Note: When a polarity dependent pulse transmitter is used, take
care of the correct orientation.
•Connect the negative reference potential (-) or GND on the right spring-type
terminal.
•Connect the positive reference potential (+) on the left spring-type terminal.
•If the line has a shielding braid, push the shielding braid covering over the
counter covering of the cable.
•For stain relief, fix the line on the outer sheath by a clamp.
Note: The shielding braid must not be connected to T550 (UC50…)
when the flow sensor has its own ground connection
.
Note
:
The cage clamp terminals can be used for cable cross-
section of 0.5 … 1.5 mm² (solid or stranded). In order to preserve
the IP protection class of the housing, the outside diameter of the
cable sheath shall be 3.7 … 4.4 mm.
Fig. 4
black
+
green
-