Juwent UVERS W User manual

UVERS
UNIT HEATERS
Szymański, Nowakowski Sp. j.
31 Lubelska Str., 08-500 Ryki
phone [phone]
POLAND
I. CONTACTS
II. ORIGINAL OPERATING INSTRUCTIONS
III. WARRANTY CONDITIONS
IV. STARTUP REPORT
V. INSPECTION AND MAINTENANCE CHART
VI. SERVICE REQUEST FORM
VII. LIST OF COMPONENTS INSTALLED IN THE PRODUCT
Read the instruction manual carefully before starting work.
EDITION EN 250523

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I. CONTACTS
Szymański, Nowakowski General Partnership
31 Lubelska Str., 08-500 Ryki
phone [phone],
POLAND
Export department
mob.[phone]
mob.[phone]
[email protected]

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II. ORIGINAL OPERATING INSTRUCTIONS
UVERS
UNIT HEATERS

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TABLE OF CONTENTS
1. INTENDED USE 5
2. DESIGNATIONS 5
3. DESCRIPTION 6
4. TECHNICAL DATA 6
5. TRANSPORTATION 7
6. SAFETY RECOMMENDATIONS 8
7. INSTALLATION 9
8. WATER SYSTEM - UVERS W 10
9. REFRIGERATION SYSTEM - UVERS DX 11
10. ELECTRICAL WIRING 11
11. CONTROLS 13
13. START-UP 18
12. REPAIR, MAINTENANCE AND DECOMMISSIONING 19
14. TROUBLESHOOTING 20
15. INFORMATIONS 20

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1. INTENDED USE
UVERS W unit heaters are designed to be fed with hot water from low temperature heat sources
such as heat pumps or gas-red boilers. They can also be fed with chilled water to provide cooling.
UVERS DX unit heaters are suitable for use alongside air-to-air heat pumps. Thanks to the reversible
system, they can also provide a cooling function.
The unit heaters are designed for heating and cooling areas such as:
» factory oors,
» workshops,
» warehouses,
» sports and entertainment halls.
Unit heaters cannot be used in areas with relative humidity above 95% and air dust
concentration above 3mg/m3.
UVERS W units can be fed with water at a maximum temperature of up to 150°C and an
operating pressure of up to 1.5MPa.
Unit heaters are suitable for vertical operation with a maximum inclination from the
vertical plane of 25°.
UVERS DX units can be fed by R410A refrigerant;
working pressure up to 3.5MPa.
When the unit heater is operating in cooling mode, condensation may be entrained by
the air stream. Follow the instructions in this manual.
2. DESIGNATIONS
Unit heater UVERS W -1 -III -EC
Size 1; 2
Number of coil rows II; III
Fan type AC; EC
Unit heater UVERS DX -1 -III -EC
Size 1; 2
Number of coil rows III
Fan type AC; EC

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3. DESCRIPTION
The unit heater consists of:
»axial fan with AC or EC single phase motor;
»coil made of copper tubes with an external diameter of 12 mm and aluminium ns with n
spacing s=2.4 mm.
UVERS W is available with two types of coils: 2 or 3 row coils adapted to work with low
temperature heat sources and 3 row coils suitable for cooling function as they can be fed with chilled
water. UVERS DX is only available with a 3-row coil suitable to work with heat pumps using R410A
refrigerant in a two-pipe reversible system.
»casing with single-row outlet grille which helps to increase the air throw.
Accessories:
» specially designed wall mounting bracket that allows the position of the unit heater to be
adjusted at an angle of ± 45° in the horizontal plane and at an angle of 25° plane;
» drip tray for collecting the condensate generated during the cooling process.
4. TECHNICAL DATA
Unit heater size UVERS W-1 UVERS W-2
A (mm) 556 677
B (mm) 527 686
h (mm) 460 620
Number of coil rows II III II III
d1l d23/4’’ l 3/4’’ 3/4’’ l 3/4’’ 3/4’’ l 3/4’’ 1’’ l 1’’
Volume (dm3)1.5 2.0 2.4 3.2
AC L (mm) 445 461
weight (kg) 26 28 41 47
EC L (mm) 350 423
weight (kg) 24 26 46 52

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Unit heater size UVERS DX-1 UVERS DX-2
A (mm) 556 677
B (mm) 527 686
h (mm) 460 620
Number of coil rows III III
d1l d212 l 22 12 l 28
Volume (dm3)2.0 3.2
AC L (mm) 445 461
weight (kg) 29 49
EC L (mm) 350 423
weight (kg) 27 54
AC fans parameters
Supply voltage (V) 230 230
Motor power (W) 140 250
Current (A) 0.65 1.2
Speed (rpm) 1400 1350
IP 54 54
Operating temperature 60°C 60°C
EC fans parameters
Supply voltage (V) 230 230
Motor power (W) 140 332
Current (A) 1.45 2.16
Speed (rpm) 1160 1300
IP 54 54
Operating temperature 40°C 70°C
Noise level
UVERS DX-1-AC UVERS DX-1-EC UVERS DX-2-AC UVERS DX-2-EC
Noise level (dB(A)) 53 56 62 64
Noise level — sound pressure level taking into account the sound absorption in the room A=100m2 and directivity factor Q=2 at a
distance of 5 m.
5. TRANSPORTATION
The unit heaters are supplied complete, in cardboard packaging to protect them from dirt and
atmospheric inuences.
The instruction manual is delivered with the unit heater.
The controls are supplied separately on request.
The unit heaters should be shipped in no more than two layers with padding to prevent
mechanical damage.

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6. SAFETY RECOMMENDATIONS
The unit heaters should only be used in accordance with the instruction manual.
The start-up, installation, connection, inspection and repair of the unit should be carried
out by an authorized contractor, the electrical work should be carried out by a person
with the required certicates authorized to carry out electrical work.
All maintenance and repair work must be carried out when the power is off.
In the event of a malfunction, immediately disconnect the motor from the power supply
and shut off the heating medium supply to the coil.
The unit heater may only be operated with correctly functioning electrical safety devices.
It must be permanently connected to an electrical system equipped with a protective
(grounding) terminal, a residual current device and a service switch.
Use only original spare parts.
It is forbidden to operate the unit heater with the fan without a protective grille.
Caution!
Failure to install or operate the unit heater in accordance with the operating instructions may
result in damage to the unit heater and void the warranty.
Due to its design, the unit heater does not emit any hazardous radiation.
Despite the fact that the product has been designed and manufactured in accordance with the
standards in force at the time of manufacture, there is an unavoidable risk of injury or damage to
health when using the product. This probability is related to the frequency of use, cleaning and
repair of the unit heater, the presence of persons in the danger zone and failure to comply with
the safety rules set out in the instructions. The severity of physical injury and deterioration in health
depends on many conditions which can only be partially anticipated by taking them into account
in the design of the equipment and by providing descriptions and warnings in the instructions for
use. Therefore, there is a residual risk if the recommendations and instructions are not followed by
the operator.

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7. INSTALLATION
The walls, ceilings or structural parts of the building to which the brackets or other suspensions
of the unit heaters are attached should be of adequate strength. This should be agreed with the
building designer.
The supporting structures for the unit heater can be freely designed according to the
strength requirements.
If it is necessary to mount the unit on a partition wall, e.g. made of sheet metal,
reinforcement should be used to prevent vibrations of the partition wall caused by the
operation of the unit heater and an increase in the noise level in the room.
The minimum distance from the wall or ceiling required to ensure free passage of the air
to the fan is 30 cm for the UVERS-1 units and 40 cm for the UVERS-2 units measured
from the rear face of the unit casing.
Mounting brackets
» The units can be mounted on the wall using the mounting bracket that is available as an
accessory for the UVERS units.
» It allows the unit heater to be rotated ± 45° in the horizontal plane and tilted 25° in the vertical
plane.
» The bracket should be fastened to the unit heater with M8 x 60 bolts using spacer sleeves.
90°
25°
D
UVERS Unit
Heater
KM-UVERS
TC-UVERS
Ǿ 11
E
Spacer sleeve
Wall bracket D
(mm)
E
(mm)
Bracket weight
(kg)
Condensate drip
tray
Weight of dip
tray
(kg)
KM-UVERS-1 682 645 3.1 TC-UVERS-1 2.0
KM-UVERS-2 782 804 3.6 TC-UVERS-2 2.5
» For units with a cooling function, use a drip tray and position the blades of the outlet grille
at a 45° angle to prevent condensation from being carried away.
» The unit heaters with drip tray must be operated perpendicular to the wall to allow
condensation to drain (do not tilt the unit heater!).
» The condensate drip tray has a drain connection ⵁ 11mm.
» The condensate can be discharged directly to the sewer or via a condensate pump.
» The drip tray should be installed under the unit heater and fastened to the mounting bracket
with an M8 x 60 bolt.

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8. WATER SYSTEM - UVERS W
UVERS units with water coils can be fed with water at a maximum temperature 150°C
and working pressure up to 1.5MPa.
It is recommended:
» to connect the bottom connection of the coil to the supply pipe of the heating system and the
return pipe to the top connection;
» to use shut-off valves on the supply and return pipes to allow the unit heater to be removed
without draining the heating system.
The solenoid valves should be installed in the supply line upstream of the coil.
Unit heater coils should be vented and drained centrally in the network using air vents and drain
valves.
Centralised drainage of the water coil is not possible for ceiling-mounted unit heaters.
Inaccurate venting of the coil may be the reason why the unit heater does not achieve
the desired parameters.
The coil connections are not intended to bear the weight of the pipework.
When connecting the pipes to the coil, the connections must be secured against over-tightening
and consequent damage to the thread, as shown in the gure below.
Damage to the coil caused by the above is not covered by the warranty.