Mixed water temperature
fluctuates
Mixed water temperature
too high after extended
periods of no tapping of
water
Mixed water temperature
too low after extended
periods of no tapping of
water
Mixed water cannot be set
to the desired temperature
JRGUMAT does not
regulate the mixed water
temperature
Very low / no volume flow of
the mixed water
Installation instructions/schematic
disregarded,
back flow preventer defective
Mixed water circulation only looped back
to water heater and not to the JRGUMAT /
circulation not calibrated
Mixed water circulation only looped back
to the JRGUMAT and not to the water
heater / circulation not calibrated
JRGUMAT with inappropriate temperature
range installed
JRGUMAT thermostat overheated
Inappropriate / no original GF JRG unions
use
Adjust installation according to instructions,
check proper function of back flow preven-
ter and replace it if necessary
Integrate JRGUMAT into circulation /
calibrate circulation
Integrate water heater into circulation /
calibrate circulation
Check temperature range of installed
JRGUMAT; install JRGUMAT with alternative
temperature range if necessary
Replace JRGUMAT
Use original GF JRG unions
Adhere to instructions in JRGUMAT manual;
regularly check whether back flow preventer
works properly
Observe the installation instructions in the
JRGUMAT manual; split circulation: about
10% to the water heater and about 90% to the
JRGUMAT
Observe the installation instructions in the
JRGUMAT manual; split circulation: about 10%
to the water heater and about 90% to the
JRGUMAT
Determine mixed water temperature and
respective temperature range before ordering
the JRGUMAT
When using soldered unions, remove
JRGUMAT before soldering; note maximum
temperature JRGUMAT may be exposed to
Order original GF JRG unions together
with the JRGUMAT.
Do not use water meter unions.
!Malfunction ? Possible cause Possible action Precaution
JRGUMAT – Trouble shooting
2/2
Für nicht erwähnte Störungen oder weitere Fragen stehen Ihnen unsere technischen Berater gerne zur Verfügung:
CH und Export: Georg Fischer JRG AG, Hauptstrasse 130, 4450 Sissach, Phone Technischer Kundendienst +41 (0)61 975 23 77
Deutschland: Georg Fischer GmbH, Daimlerstrasse 6, 73095 Albershausen, Phone +49 (0)7161 302 0
Österreich: Georg Fischer GmbH, Sandgasse 16, 3130 Herzogenburg, Phone +43 (0)2782 856 43 0
Frankreich: Georg Fischer SAS, Bâtiment Les Rabelais, Paris Nord 2, 22 avenue des Nations, 95932 Villepinte, Téléphone +33 1 41 84 68 84
Änderungen und Irrtümer vorbehalten.
37 201 62 / e / 05.17
