ently
connected temperature sensors, and an electronic unit that calcu-
lates the heat consumption from the volume flow and temperature
difference.
The volume measuring unit is a non-wearing ultrasonic measuring
device without mechanically moving parts. The long-life battery is
designed for the calibration validity period. ULTRAHEAT
®
XS
cannot be opened without breaking the calibration seal.
The heat meter must only be operated under the conditions stated
in the device sheet and on the rating plate.
Information on the Display
The displays of the heat meter are structured on several levels
and may deviate from the standard described here. Each short
press of the button switches to the next display of the user loop
(level 1).
indicates what sort of display it is.
User Loop

0054567 kWh
Cumulated heat quantity

00065.43 m³
Cumulated volume

888888 kWh
Segment test
Info
F - - -
Error message on fault with
fault number
Info

Pressing the button for 10 seconds switches from the user loop to
the service loop (level 2).

Exiting the service loop by pressing the button for 3s or auto-
matically after 30 minutes.
Service Loop
0.534

m³/h Current flow rate

22.9
kW Current heat power

84 47
°C
Current supply-return temperature

04.06.02
D
Date

786
Bh Operating hours

56
Fh Missing hours

3792701
G
Device number, 7-digit
Info
PulSE CH Remote reading option (optional)
Info
123
A
Primary address when option M-Bus
Info
2345678
K
Customer number, 7-digit
Info
18.02.01
F0
Date stamp for F0 prewarning
Info
3- 01
FW Firmware version
Info
31.12.01
V
Previous year's day of storage
Prev. year
0034321 kWh Heat previous year on set day
Prev. year
00923.12
m³ Volume previous year on set day
Prev. year
12
Fh Missing hours previous year
Prev. year
- -.- -.- -
C
Code entry for parameterization
Info
01.06.02
M
Previous month's 1-15 day of storage
Prv. month

After pressing button for 3s:


0034321 kWh Heat previous month on set day
Prv. month
00923.12
m³ Volume previous month on set day
Prv. month
12
Fh Missing hours previous month on set
day
Prv. month

Monthly Values
The calculator stores the following values for 15 months at each
end of month
- Heat (meter reading)
- Volume (meter reading)
- Missing hours (meter reading)
From the month set day display, press the service button for 3s to
enter the previous month's values.
The month values can also be read out via the optical interface.

Fault Codes and IDs
The heat meter constantly performs self-diagnosis and can dis-
play various faults.

These operating instructions have to be handed over to the end user

3250 004 101 l Operating Instructions ULTRAHEAT
®
XS


Ultrasonic Heatmeter ULTRAHEAT
®
XS
Subject to change without prior notice
UH 304 101l 2/2

Fault Code
Fault
Measures
FL nEG
Wrong flow direction
Check / correct flow or
mounting direction

Eventually changing
with

DIFF nEG
Negative temperature
difference
Check / exchange mount-
ing position of sensors

Eventually changing
with

F0
No flow rate can be
measured
Air in the measuring
unit/pipe, vent pipe (as-
delivered state)
F1
Interruption in the
supply sensor
Contact service
F2
Interruption in the
return sensor
Contact service
F3
Electronics for tem-
perature evaluation
defective
Contact service
F4
Battery empty
Contact service
F5
Short-circuit in the
supply sensor
Contact service
F6
Short-circuit in the
return sensor.
Contact service
F7
Fault in internal
storage operation
Contact service
F8
Fault F1, F2, or F3 or
F5, F6 pending for
longer than 8 hours,
detection of fraud
attempts. No more
measurements are
performed.
This F8 error message
must be reset by service.

F9
Fault in the electron-
ics
Contact service
If the response thresholds are exceeded and the flowrate and
temperature are positive, the heat quantity and volume will be
summated. The segment test displays all display segments for
test purposes.
On the yearly set day, the meter readings for heat quantity, vol-
ume, and missing time are placed in a previous year memory
each year.
The flowrate, heat power, and temperature difference are re-
corded signed. Values below the response threshold are pre-
ceded by a "u". The current temperatures are displayed together
as integer °C values on one display line.
The 8-digit customer number (secondary address for M-bus op-
eration) can be set in parameterization mode. The most signifi-
cant digit is suppressed on the display. The device number is
assigned by the manufacturer.
The operating hours are counted from initial connection of the
power source. Missing hours are summated if a fault is pending
that prevents the heat meter from measuring. The date is incre-
mented daily.
The firmware version number is assigned by the manufacturer.

Technical Data:
Technical Data Electronic Unit:
Ambient temperature
5 - 55°C
Power supply
Battery for 6 or 11 years


or 24V AC/DC external (special
version)
Temperature sensor
Pt 500
Communication
Optical interface standard, M-bus
or pulse output optional
Protocol
IEC870, 300 baud in Nb
Splittability
Always removable,


cable length 1 m
Technical Data of the Flowrate Measuring Unit
Type
q
p
Dimensions
0.6 110mm
(3/4) 190mm(1)
1.0 110mm
(3/4) 190mm(1)
1.5 110mm
(3/4) 190mm(1)
2.5 130mm
(1) 190mm(1)
Temperature range
15 - 105°C
Nom. pressure
1.6 MPa (PN 16)
Overload
qs = 2 x qp, permanent
Mounting position
Horizontal or vertical
Measurement range
1:100 approved, calibrated
1:50
Measurement accuracy:
EN 1434 cl. 3

Technical Data Temperature Sensor:
Temperature sensor
Pt 500 acc. to EN 60751, not
removable
Connection 2-wire,
permanent.
Type
DS direct short, M10 x
27.5mm acc. to EN1434 or
rod sensor 45 x 5.2 dia. mm
Cable length
1.5m standard, 5 m optional
Max. temperature
105 °C
Installation supply sensor
Mounting element for DS 1/2
x M10, ball valves for DS,
brass pocket 1/2 for rod sen-
sor
Installation return sensor
Integrated (when meter is for
installation in return)

Notes:
Observe national calibration laws when replacing the battery.
Batteries must not be opened, come into contact with water, or be
exposed to temperatures above 80 °C. Dispose of used batteries
at suitable collection centers.
The transport of the heat meter is permitted only in the original
package. If the meter needs to be sent by air freight then the
battery must be removed prior to shipping!

Latest information about our heat meters you may also find in the
internet:
www.landisgyr.com



EC Declaration of conformity
Landis+Gyr herewith declares that this product complies
with the relevant requirements of the following directives:

2004/22/EC Measuring instruments directive


89/336/EEC Electromagnetic compatibility

73/23/EEC Low voltage directive

EC type-examination certificate
DE-06-MI004-PTB007



Landis+Gyr GmbH
Humboldtstr. 64
D-90459 Nürnberg
Germany