Landis+Gyr T450 Parts list manual

ULTRAHEAT®T450
ULTRACOLD®T450
Technical Description
32 21 101 001 a
Date: 26.02.2020
Landis+Gyr GmbH
Static Heat and Cooling Meter T450
Residential; local and district heating

Contents 2/36
Contents
1General Notes ____________________________________________________________4
Other available documentations _____________________________________________ 4
2Safety Information ________________________________________________________5
3Technical Data____________________________________________________________7
4Dimensions ______________________________________________________________8
5Installation______________________________________________________________10
Changing the installation location ___________________________________________ 10
Installation recommendations ______________________________________________ 11
Examples of integration ___________________________________________________ 11
Installation instructions for the adapter set (direct immersion temperature sensor) _____ 12
Torques 12
Installation for cooling meters and combined heat/cooling meters __________________ 12
Protection class _________________________________________________________ 13
6Operating elements ______________________________________________________14
6.1 Displaying current meter status ___________________________________________14
LCD ______________________________________________________________ 15
LOOP 0 “LOOP 0” _______________________________________________________ 16
6.2 Previous year values____________________________________________________17
6.3 Monthly values ________________________________________________________17
6.4 Mid-month values ______________________________________________________17
7Display / priority rating____________________________________________________19
8Power supply____________________________________________________________19
Power supply requirements ________________________________________________ 20
Dynamical calculation of battery life__________________________________________ 20
9Communication__________________________________________________________20
Electronic unit interfaces __________________________________________________ 20
Terminals______________________________________________________________ 21
9.1 Pulse module _________________________________________________________21
9.2 M-Bus module_________________________________________________________22
9.3 Radio Module 868 MHz (Wireless M-Bus) ___________________________________22
10 Pulse inputs_____________________________________________________________24
11 Tariff control (optional) ___________________________________________________25
Threshold value tariff (tariff T1 - T5, T9 –T13) _________________________________ 25
Supplied quantity of energy (tariff T6) ________________________________________ 25
Returned quantity of energy (tariff T6)________________________________________ 25
Heat / cooling meter (tariff T7)______________________________________________ 25
Surcharge quantity tariff by means of return temperature (tariff T8) _________________ 26
Volume-weighted temperature (Tarif T14)_____________________________________ 26
12 Error messages__________________________________________________________27
13 Log functions ___________________________________________________________29
14 Order codes (type number key)_____________________________________________32
15 Pressure loss, weight and dimension of package______________________________34

Contents 3/36

General Notes 4/36
1 General Notes
Note:In the following text, the term "meter" is used to refer to both
the heating meter as well as the cooling meter unless otherwise
stated.
The meter has left the factory in a technically safe condition. Adjustments,
maintenance work, replacement of parts or repairs may only be carried out by
specialist staff who are aware of the associated hazards. Further technical
support is provided by the manufacturer on request. The meter's calibration-
relevant security symbols must not be damaged or removed. Otherwise, the
warranty and calibration validity of the meter will be invalidated.
Other available documentations
•Operating instructions T450
•Installation instructions T450
•Service instructions T450
•Respective module manual
•List of accessories
Additional information’s are available on request.

Safety Information 5/36
2 Safety Information
The meters may only be used in building installations and
only for the applications described.
The local regulations (installation, etc.) must be observed.
The operating conditions on the nameplate must be ob-
served during use. Failure to comply with these regula-
tions can cause dangerous situations and voids all claims
arising from liability for defects as well as liability on the
basis of any expressly granted guarantees.
Comply with the requirements for circulation water (CEN /
TR 16911:2016).
The meter is only suitable for circulation water in heating
systems.
The meter is not suitable for drinking water.
Do not lift the meter on the calculator.
Pay attention to sharp edges on threads, flanges and the
measuring tube.
Only personnel trained in the installation and operation of
meters in heating/cooling systems may install and remove the
meter.
Only install or remove the meter on an unpressurised system.
After installing the meter, check the leak tightness of the
system.
Breaking the safety marks relevant for calibration voids the
warranty and the validity of the calibration.
Avoid contact of the meter housing with silicone oils or
substances containing silicone oil.
Only clean the meter from the outside with a soft, slightly
moistened cloth. Do not use spirits or cleaning agents.
The meter must not be energized until it has been fully
assembled. Otherwise there is a risk of electric shock on the
terminals. A defective or obviously damaged device must be
disconnected from the power supply immediately and
replaced.
The meter is valid for disposal as waste electronic equipment
within the meaning of the European Directive 2012/19/EU
(WEEE) and must not be disposed of as household waste. The
corresponding national and legal regulations must be observed

Safety Information 6/36
and the device must be disposed of via the channels provided
for this purpose. The local and currently valid legislation must
be observed.
The meter contains lithium batteries. Do not dispose of the
meter and batteries as household waste. Observe local
regulations and laws regarding disposal.
After lithium batteries have been used, you can return them to
the manufacturer for proper disposal. When shipping batteries
please observe legal regulations which among other things
govern the labelling and packaging of hazardous goods.
Do not open the batteries. Do not bring batteries into contact
with water or expose to temperatures exceeding 80°C.
The meter has no lightning protection. Ensure lightning
protection via the house installation.

Technical Data 7/36
3 Technical Data
General
Measuring accuracy
Class 2 or 3 (EN 1434)
Mechanical class
M2 (2014/32/EU)
Electromagnetic class
E1 (2014/32/EU)
Ambient humidity
< 93 % rel. humidity at 25 °C, non-
condensing
Max. altitude
2000 m above sea level
Storage temperature
-20 … 60 °C
Calculator
Ambient temperature
5 … 55 °C
Housing protection rating
IP 54 / IP 68 optional (EN 60529)
Operation threshold f. T
< 0.2 K
Temperature difference T
3 K … 120 K
Temperature measurement range
0 ... 180 °C
LCD
8-digit
Optical interface
Standard (EN 62056-21)
Communication
Optional, e.g. M-Bus
Separability
Always removable, cable length op-
tional
Temperature sensor
Type
Pt500 or Pt100 (EN 60751)
Temperature range
0 ... 150 °C (up to 45 mm overall
length)
0 ... 180 °C (as of 100 mm overall
length)
Volume measurement unit
Protection class
IP 54 / IP 65 / IP 68 optional (EN
60529)
Installation site
Hot side / cold side; parameterizable
Installation position
Any
Measuring range
1:100
Temperature range
5 … 130 °C
National approvals may differ.
Recommended for...
...heating application
10 … 130 °C
...cooling application
5 … 50 °C
Maximum overload
2.8 × qp
Nominal pressure
PN16 (PS16), PN25 (PS25)
Power supply
Type of power supply
Battery for 6 - 20 years
Type of battery
AA cell lithium
Lithium content
0.65 g per battery
Number of batteries
1 –4; depending on configuration

Dimensions 8/36
4 Dimensions
Fig. 1: Dimensions of calculator
Fig. 2: Plan view and cross-section of adapter plate

Dimensions 9/36
Fig. 3: Overview dimensions overall length 110 mm
Fig. 4: Overview dimensions overall length 130 mm (thread)
Fig. 5: Overview dimensions overall length 190 mm (thread)

Installation 10/36
5 Installation
Note: For a heat meter or combined heat / cooling meter, the
cold side installation location corresponds to the return and
the hot side installation location to the flow .
Note: For a cooling meter , the hot side installation location
corresponds to the return and the cold side installation loca-
tion to the flow .
Proceed as follows to install the meter:
•Compare the installation location with the symbol on the LCD ( or ). If
necessary, adjust the installation location of the meter to match the condi-
tions (see chapter “Changing the installation location”).
•Note the dimensions of the meter and check whether there is sufficient free
space.
•Flush the system thoroughly before installing the meter.
•Install the meter vertically or horizontally between two gate valves so that
the arrow on the body matches the flow direction. Please note the following
installation examples.
•Install the temperature sensors in the same circuit as the meter.
•Seal temperature sensors and screw connections to prevent manipulation.
•Remove the rubber band from the volume measuring part. During opera-
tion, the temperature sensor cable and control line should not be in direct
contact with the volume measuring part.
•If you install the meter as a cooling meter, follow the corresponding instruc-
tions.
Recommendation: If you install several meters, the same installation condi-
tions should apply to all meters.
Changing the installation location
Note: The installation location can be changed in the field if this
function has been enabled at the factory. This function locks after 5
changes and can then no longer be used. The entries can be
checked via the LCD loop "LE".
Note: Alternatively, you can change the installation location using
UltraAssist.
Note: If the symbol is not displayed, this function is
not available.
For meters with an adjustable installation location, the installation location can
be determined manually. Proceed as follows:
•Press and hold the Service button (for more than 3 seconds) until "Para"
appears on the LCD.
•Press button 2 briefly until appears on the LCD.
•Press button 1 briefly several times until appears on the LCD.

Installation 11/36
•Briefly press button 2 to display the current installation location. Depending
on the installation location, or is displayed.
•To change the installation location, press button 1. The display changes.
•Press button 2 briefly until “*”appears on the LCD.
•To complete the parameterization, briefly press button 1 several times until
" " appears on the LCD.
•Press button 2 briefly to complete the change.
•The change can be checked using the symbols ( or ) on the LCD.
•If necessary, adjust the temperature sensors according to the installation
requirements.
Installation recommendations
•During installation, make sure that water cannot enter into the calculator
during operation.
•Inlet or outlet sections are not necessary but are recommended.
•If you install the meter in the common return of two circuits, select an instal-
lation location with a minimum distance of 10 × DN from the T-piece.
•The temperature sensor ends should reach at least into the middle of the
pipe cross-section.
Examples of integration
Ball valve
Fig. 6: Installation with ball valve (recommended up to and including DN25)
Fig. 7: Installation for circulation with admixture; placement of temperature sensors

Installation 12/36
Fig. 8: Installation for circulation with throttle circuit, for example (flow sensor in flow direction before con-
trol valve / differential pressure regulator)
Installation instructions for the adapter set (direct immersion temperature sensor)
An installation set is included for meters with a Ø 5.2 × 45 mm temperature
sensor. This allows you to immerse the temperature sensor directly in an in-
stallation piece or a ball valve, for example.
1. Install the O-ring into the installation point using the enclosed mounting
aid/pin.
2. Place both halves of the plastic fitting around the 3 recesses on the temper-
ature sensor.
3. Press the screw connection together and screw the screw connection into
the installation point as far as it will go (tightening torque 3 ... 5 Nm).
Fig. 9: Mounting adapter set
Torques Please note the following torques for tightening the screws and nuts on the
meter:
•Screw on the device cover (Fig.1, No. 4): min. 1 Nm
•All other screws: Hand-tightened to approx. 0.5 Nm
Installation for cooling meters and combined heat/cooling meters
To preventcondensation from forming,observe thefollowing installation instruc-
tions:
•Install the cooling meter so that the black cover on the measuring tube
faces to the side or downwards.
•Install the calculator separately from the volume measuring part, e.g. on the
wall.
•Create a downwards loop with the connected lines.
•Install the thermowells in such a way that the temperature sensors are hori-
zontal or vertical.
Transducer cover
Fig. 10: Recommended installation position of cooling meters and combined
heat/cooling meters

Installation 13/36
Protection class The protection class of the calculator and the volume measurement unit is in-
dicated on the calculator dial plate, e. g. IP54/68. The first specification (IP54
in the example) refers to the protection class of the calculator and the second
specification (IP68 in the example) to the protection class of the volume meas-
uring unit.

Operating elements 14/36
6 Operating elements
Fig. 11: Operating elements
No.
Name
Description
Note
1
Button 1
Switches to the next display
value within a loop.
2
Button 2
Switches to the next loop.
3
Security seal
4
Screw
5
Optical interface
Permits data communication
via a computer with the nec-
essary service software.
6
LCD
7
Service button
To call up the parametriza-
tion operation of the meter.
Accessible after re-
moving the cover.
6.1 Displaying current meter status
The meter displays the current meter status in kWh, MWh, MJ or GJ.
Note: To avoid reading errors, the decimal places of displayed
values are marked by a frame.
Note: Calibrated values can be recognized by an additionally
displayed star symbol (S12).
Note: Depending on the device parameterization, both the dis-
play scope and the displayed data may deviate from this de-
scription.

Operating elements 15/36
LCD
Fig. 12: LCD
ID-No.
Sym-
bol
Description
S1
Hourly value
S2
Daily value
S3
Monthly value
S4
Yearly value
S5
Maximum value
S6
Minimum value
S7
Average
S8–S11
Decimal places
S12
Calibrated value
S14
Place of installation, return
S15
Place of installation, flow
S17
Meter type: Heat meter or combined heat/cooling meter
S18
Meter type: Cooling meter
S21
Current flow rate
S22
Error message
S23
Power supply: Mains
S24–
S26
Power supply: Battery with capacity indicator
S27
Module identifier
S28
Current loop display (LOOP)
S29–
S32
Tariff display
13 –15
Current display code (LCD-ID)

Operating elements 16/36
LOOP 0 “LOOP 0”
The LCD indicates the following values consecutively:
Loop head
Error message (here: currently no error)
Current energy quantity (here: kWh; heat
meter; installation location: Return flow; tar-
iff on)
Current volume
Current value tariff register 1 (only if tariff
was selected)
Current value tariff register 2 (only if tariff
was selected)
Current value tariff register 3 (only if tariff
was selected)
Segment test
Firmware version
CRC / CMAC

Operating elements 17/36
6.2 Previous year values
The meter saves the following values on the yearly set day for 16 years:
•Previous year minimum temperature hot side
•Previous year minimum temperature cold side
•Previous year maximum flow rate
•Previous year maximum power
•Previous year maximum temperature hot side
•Previous year maximum temperature cold side
•Previous year maximum temperature difference
•Previous year value energy
•Previous year value volume
•Previous year value tariff register 1
•Previous year value tariff register 2
•Previous year value tariff register 3
•Previous year value volume pulse input 1
•Previous year value volume pulse input 2
•Previous year value error time
•Previous year value flow time
•Previous year value energy (incorrect installation)
•Previous year value volume (incorrect installation)
•Yearly set date
6.3 Monthly values
The meter saves the following values on the monthly set day for up to 24
months:
•Previous month minimum temperature hot side
•Previous month minimum temperature cold side
•Previous month maximum flow rate
•Previous month maximum power
•Previous month maximum temperature hot side
•Previous month maximum temperature cold side
•Previous month maximum temperature difference
•Previous month value energy
•Previous month value tariff register 1
•Previous month value tariff register 2
•Previous month value tariff register 3
•Previous month value volume pulse input 1
•Previous month value volume pulse input 2
•Previous month value error time
•Previous month value flow time
•Previous month value energy (incorrect installation)
•Previous month value volume (incorrect installation)
•Monthly set date
6.4 Mid-month values
The meter saves the following values on the mid-month set day for 24 months:

Operating elements 18/36
•Mid-month value energy
•Mid-month value volume
•Mid-month value tariff register 1
•Mid-month value tariff register 2
•Mid-month value tariff register 3
•Mid-month value volume pulse input 1
•Mid-month value volume pulse input 2
•Mid-month set date

Display / priority rating 19/36
7 Display / priority rating
Note:The number of places after the decimal point of a value is
based on the nominal flow rate and the chosen dimension.
Note: The number of decimal places of a value can be adjusted
in accordance with the normative requirements.
The following selectable standard display resolution are used for the energy:
Nomi-
nal
flow
Energy
Energy
Energy
Energy
Energy
Energy
[m³/h]
[kWh]
[MWh]
[MJ]
[GJ]
[MBtu]
[Gcal]
0.6
00000001
00000.001
00000001
00000.001
00000001
00000.001
1.5
00000001
00000.001
00000001
00000.001
00000001
00000.001
2.5
00000001
00000.001
00000001
00000.001
00000001
00000.001
The following selectable standard display resolution are used for the volume:
Nominal
flow
Volume
Volume
[m³/h]
[m³]
[gal]
0.6
000000.01
00000001
1.5
000000.01
00000001
2.5
000000.01
00000001
8 Power supply
Note: The lifetime of battery depends on the type of battery and
on the requirements.
Note: When replacing the battery, ensure that the battery ser-
vice life is longer than the planned life cycle of the meter.
Note: Only batteries approved by the manufacturer may be in-
stalled.
The meter is powered by battery or additionally by the M-Bus module.
Options:
•6 years battery
•11 years battery
•16 years battery
•20 years battery

Communication 20/36
Power supply requirements
6
years
11
years
16
years
20
years
Standard meter *
1xAA
2xAA
3xAA
4xAA
Radio module 868 MHz
(mobile radio 30 sec. trans-
mission interval)
2xAA
3xAA
4xAA
-
* The battery life of a standard meter was calculated basing on the following assumptions:
•Observance of the given restrictions in terms of environmental conditions
•Temperature of the calculator annually averages 35 °C
•Heating period ½ year
•Measuring interval of the flow rate every 2 sec.
•Adaptively measurement of temperature within an interval of 4-32 sec.
•LCD power saving mode
•2 pulse inputs with 50 % Duty Cycle max. 2 Hz
•1 monthly readout via the optical interface
•Radio transmission interval of 15 min., T1, telegram F000, encrypted (mode 7)
Dynamical calculation of battery life
Note: Note that after the replacement of the battery a parametri-
zation of the number of batteries via UltaAssist is required in or-
der to ensure a faultless calculation of the battery life.
Hinweis: Alternatively, the date (month, year) of the battery
change can be transmitted via M-Bus and radio.
The dynamic battery life calculation estimates the expected remaining battery
life.
The calculation is based on the consumption and parametrization of the meter.
In case that the parametrization is changed the adjustment automatically af-
fects the prospective battery life. If the meter detects a higher or lower energy
consumption than previously estimated, it autonomously increases or reduces
the value of battery life displayed. The value of battery life is indicated by a
battery icon on the LCD additionally provided with a date (month, year).
9 Communication
Electronic unit interfaces
The calculator is equipped with an optical interface in accordance with EN
62056-21:2002 as standard.
You can also use one of the following communication modules for remote
reading:
•Pulse module
•M-Bus-module
•Radio module
These modules do not have an effect on the measurement. You can retrofit
the modules at any time without damaging the security seal.
Note: You will find the technical details and data on communica-
tion modules in their respective documentation.