PESHEAT2V01
2016-01-08
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Mounting seal:
-one or two hanged seals on the fixers of junction of the top and botton part of the calculator (Annex D)
-seals on the protective cover and mounting bolt of temperature sensors (see Annex F, Fig.1...2).
6. SAFETY REQUIREMENTS
When the meter is powered from the battery (3.6 V), risk factors during the meter installation and
service is a heat conveying fluid flowing within flow sensor with inner pressure up to 1,6 MPa and
temperature up to 180
0
C.
If meter is powered from mains power supply, it contains dangerous ~230 V electrical current.
To eliminate this risk, only qualified technical personnel may install and maintain heat meters
(certificates for electrical installation work with equipment up to 1000 V are required). Personnel must be
familiar with appropriate technical documentation and general safety instructions.
It is necessary to follow general safety requirements during installation and maintenance process.
Protective grounding is not required, because housing is made from plastics, and conductive parts
are not exposed to the surface.
To protect power circuits from current overrun, 0,1A fuse, marked “F1”, is mounted on the bottom
side of power supply module. Remove power supply module to replace the fuse.
If relay output current exceeds 2 A, it may damage output circuits. It is recommended to use
additional protection circuits to protect relay outputs from damage.
Safety guarantees at installation and service of meter is:
- Reliable insulation of electrical circuits,
- Hermetic fitting of primary flow and temperature sensors into the pipeline,
- Reliable fastening of a sub-assemblies of heat meter at installation.
Safety requirements for temperature and pressure sensors are provided in appropriate technical
documentation.
Warning! Switch off mains power supply before changing, repairing, connecting or
disconnecting system parts, if meter is powered from mains power supply! Power switch has to be
installed close to the calculator.
Mounting of the sub-assemblies of heat meter is permissible only after ensuring of absence
of heat conveying fluid in the pipeline.
7. INSTALLATION
Basic requirements
Before installing the device:
-
check if all parts listed in the documentation are available,
-
check if there are no visible mechanical defects,
-
check if there are valid labels of manufacturer.
Only qualified personnel may install the equipment, following the requirements listed in this
document, in technical documentation of other system components and in heat meter installation project
Mechanical mounting
Mounting of calculator
Heat meter calculator may be installed in heated premises, on vertical surface. It may not be exposed
to direct sunlight. Outline and mounting dimensions are provided in Annex D
Calculator can be mounted in five different ways:
-
Wall mounting, without possibility sealing of mounting
- Wall mounting, with possibility sealing of mounting
- Mounting on standard DIN-rail
- Panel mounting
- Direct mounting on ultrasonic flow sensor
Note:
For water heating temperatures above 90
o
C, the calculator must be mounted on the wall.
Mounting of ultrasonic flow sensors
Outline and mounting dimensions of ultrasonic flow sensors are provided in Annex E.
