Vents VUT 350 EH User manual

VUT 350 EH
VUT 500 EH
VUT 530 EH
VUT 600 EH
VUT 800 EH
VUT 1000 EH
VUT 1500 EH
VUT 2000 EH
HEAT RECOVERY AIR HANDLING UNIT
USER`S MANUAL

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Introduction
Use
Delivery set
Structural designation key
Technical data
Safety requirements
Structure and operating logic
Mounting and set-up
Condensate drain
Connection to power mains
Unit control
Maintenance
Fault handling
Storage and transportation rules
Manufacturer’s warranty
Acceptance certicate
Electrical connection certicate
Acceptance certicate
Seller’s information
Mounting certicate
Warranty card
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CONTENT

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VUT EH
VUT EH
TECHNICAL DATA
INTRODUCTION
The present user manual consisting of technical details, operating instructions and technical specication covers the installation of
the VUT...EH air handling unit with heat recovery, VENTS series, hereinafter referred as the unit.
USE
The unit with a heat exchanger and an electric heater is a heat recovery device and is one of the energy saving components used in
buildings and premises. The unit is a component unit and is not designed for independent operation.
The unit enables continuous air exchange by means of mechanical ventilation in private residences, oces, hotels, cafes, conference
rooms, etc. as well as recovery of the waste heat energy contained in the extract air to warm up the clean supply air.
Transported air must not contain any ammable or explosive mixtures, evaporation of chemicals, coarse dust, soot and oil particles,
sticky substances, brous materials, pathogens or any other harmful substances.
THE UNIT IS NOT INTENDED TO BE USED BY CHILDREN, PHYSICALLY OR MENTALLY DISABLED PERSONS, PERSONS WITH
SENSORY DISORDER, PERSONS WITH NO APPROPRIATE QUALIFICATION.
ANY OPERATIONS WITH THE UNIT MUST BE PERFORMED ONLY BY PROPERLY QUALIFIED PERSONNEL AFTER THE
APPROPRIATE SAFETY BRIEFING.
THE UNIT INSTALLATION SITES MUST PREVENT ACCESS BY UNATTENDED CHILDREN.
Unit - 1 item;
Wall-mounted control panel - 1 item;
User’s manual - 1 item;
Packing box - 1 item.
DESIGNATION KEY
Spigot orientation:
H - horizontal
Heater type
E - electric
Air capacity [m3/h]
350, 500, 530, 600, 800,1000,1500, 2000
Unit type
VUT - heat recovery ventilation
VUT ХХХ EH
The unit is designed for indoor application with the ambient temperature ranging from +1 °C up to +40 °C and relative humidity up
to 80%.
The unit is classied as a class I electric appliance.
Hazardous parts access and water ingress protection standard:
Unit motors - IP 44;
Unit assembly connected to air ducts - IP 22.
For the main overall and connecting dimensions, outer view and technical data, refer to Fig. 1, 2 and in Tables 1, 2 and 3.
The unit design is regularly improved, so some models may slightly dier from those ones described in this manual.
DELIVERY SET

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Fig. 1. VUT 350…600 EH overall and connecting dimensions
F
ØD
KI
H
G
C
E
B
A
Табл. 1Та
б
л. 1
Type Dimensions [mm]
AB C DE FGHI K
VUT 350 EH 996 403 954 124 1057 554 497 100 119 111
VUT 500 EH 996 403 954 149 1057 554 497 100 119 111
VUT 530 EH 996 403 954 159 1057 554 497 100 119 111
VUT 600 EH 996 403 954 199 1057 554 497 100 119 111
Table 1

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VUT EH
VUT EH
Fig. 1. VUT 800…2000 EH overall and connecting dimensions
A
C
E
F
G
B
Ø D
H
I
K
M
L
Type Dimensions [mm]
ABCDE FGHI KLM
VUT 800 EH 1117 460 1071 249 1176 832 698 613 80 126 154 386
VUT 1000 EH 1117 460 1071 249 1176 832 698 613 80 126 154 386
VUT 1500 EH 1394 581 1345 314 1447 947 814 842 200 394 201 320
VUT 2000 EH 1394 581 1345 314 1447 947 814 842 200 394 201 320
Table 2

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Table 3
Type VUT 350
EH VUT 500 EH VUT 530 EH VUT 600 EH VUT 800 EH VUT 1000 EH VUT 1500 EH VUT 2000 EH
Supply voltage, 50 Hz [V] 1~230 3~400
Max. fan power [W] 2 items х
130
2 items
х 150
2 items
х 150
2 items х
195
2 items
х 245
2 items х
410
2 items х
490
2 items
х 650
Max. fan current [A] 2 items х
0,60
2 items
х 0,66
2 items
х 0,66
2 items х
0,86
2 items
х 1,08
2 items х
1,8
2 items х
2,15
2 items
х 2,84
Electric heater power [kW] 3,0 3,0 4,0 4,0 9,0 9,0 18,0 18,0
Electric heater current [A] 13 13 17,4 17,4 13 13 26 26
Total unit power [kW] 3,26 3,3 4,3 4,39 9,49 9,8 18,98 19,30
Total unit current [A] 14,2 14,32 18,72 19,1 15,16 16,6 30,3 31,7
Max. air capacity, m3/h 350 500 530 600 800 1200 1750 2200
Rotation speed [min-1] 1150 1100 1100 1350 1650 1850 1100 1150
Noise level, 3 m [dB(A)] 24-45 28-47 28-47 32-48 48 60 49 65
Transported air temperature [°C] -25 up to
+55
-25 up
to +50
-25 up
to +50
-25 up
to +55
-25 up
to +45
-25 up to
+40
-25 up to
+45
-25 up
to +40
Casing material aluzinc
Insulation 25 mm mineral wool
Filter: extract G4
supply F7 G4 (F7)*
Connected air duct diameter [mm] Ø 125 Ø 150 Ø 160 Ø 200 Ø 250 Ø 315
Weight [kg] 45 49 49 54 85 96
Heat recovery eciency [%] up to 78 up to 88 up to 85 up to 78 up to 77
Heat exchanger type cross ow
Heat exchanger material aluminium
*option
SAFETY REQUIREMENTS
DO NOT!
• DO NOT OPERATE THE UNIT BEYOND THE SPECIFIED TEMPERATURE RANGE OR IN AN
AGGRESSIVE AND EXPLOSIVE MEDIUM!
• DO NOT CONNECT CLOTHES DRYERS OR SIMILAR EQUIPMENT TO THE VENTILATION SYSTEM!
• DO NOT OPERATE THE UNIT IN THE AIR AND DUST MIXTURE MEDIUM!
DISCONNECT THE UNIT FROM POWER SUPPLY PRIOR TO MOUNTING, MAINTENANCE,
CONNECTION AND REPAIR WORKS!
While operating and mounting the unit consider the requirements of the present operation manual as well as general requirements
of all applicable local and national building and electrical codes and standards.
The unit must be grounded!
Before connecting the unit to power mains make sure that the unit is free of any visible damages or any other foreign objects inside
the casing that can damage the impeller blades.
Mounting and connection of the unit to power mains only by duly qualied electricians with valid electric work permit!
The unit is not rated for operation in an environment that contains toxic or aggressive substances as acids, alkalis, organic solvents,
soot, paint as well as sputtered particles of explosive or aggressive substances. The unit is not rated for use in areas where atmospheric
conditions are determined by sea climate or hot springs.

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VUT EH
VUT EH
DESIGN AND OPERATING LOGIC
Fig. 3. Operating logic
Intake air
Exhaust air
Extract air
Supply air
The unit has the following operating logic, Fig.3:
Warm stale extract air from the room ows through the air ducts to the unit, where it is ltered, then air ows through the heat
exchanger and is exhausted outside by the extract fan through the air ducts. Clean cold air from outside is moved by the supply fan to
the unit, where from it is directed to the supply lter. Then ltered air ows through the heat exchanger and moves to the room through
the air ducts.
Heat energy of warm extract air is transferred to clean intake fresh air from outside and warms it up. Heat recovery minimizes thermal
energy losses, energy demand and operating costs for supply air heating accordingly.
The unit is a framework construction that includes six rigidly xed 25 mm (for the VUT 350...600 EH units) and 50 mm (for the VUT
800...2000 EH units) thick sandwich panels. The three-layer sandwich panels are made of two galvanized steel sheets, internally lled with
thermal- and sound-insulated layer of mineral wool.
The air supply and exhaust units are equipped with quick-release access panels with special gaskets for easy repair and maintenance.
The terminal box (see Fig. 4: item 13 for VUT 350..600 EH) or the control unit (see Fig. 4: item 10 for VUT 800..2000 EH) contains the terminal
block. The power and ground cables are routed to the terminal block through sealed lead-ins.

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The basic unit conguration includes:
a wall-mounted control panel with a cable connection to the control system;
supply and exhaust fans with forward-curved impeller blades, maintenance-free electric motors with external rotors and built-
in thermal protection;
cross-ow plate heat exchanger;
electric heater with overheating protection: two thermal switches, one of which is a safety switch (+60 °C) with automatic reset
on temperature dropping back to normal and the other is an emergency switch (+90 °C) with manual reset on pressing the
«RESET» button;
supply air lter (lter class (F7));
extract air lter (lter class G4).
Fig. 4. Unit design
4 3 12 5
9
131 107
811
2
6
17 3 2
11 6
58
10
4
12
1. Supply fan
2. Extract lter
3. Heat exchanger
4. Supply lter
5. Extract lter
6. Drain pipe
7. Electric heater
8. Bypass
9. Wall-mounted control panel
10. Control unit
11. Drain pan
12. Quick-detachable panels
13. Terminal box
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VUT 350…600 EH
VUT 800…2000 EH

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VUT EH
VUT EH
MOUNTING AND SET-UP
The unit is suspended to the mounting surface through the threaded rod xed inside the threaded dowel. The unit is also suitable also
for mounting to a horizontal mounting surface, Fig. 5.
While mounting the unit provide the minimum required access to the unit for maintenance and repair. The required minimum
distances from the unit to the wall is shown in Fig. 6.
Fig. 5. Unit mounting
washer
nut
vibration-absorbing
rubber
nut and lock-nut
Example
Mounting to horizontal
surface
Suspended mounting
Fig. 6. Minimum unit mounting distances
A = 600 mm (VUT 350-1000 EH)
А = 850 mm (VUT 1500-2000 EH)
A
500

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The unit must be connected to sewage collection system, g. 7. Connect the pipe, U-trap (not included in delivery package) and
sewage collection system with metal, plastic or rubber connecting pipes, g. 7. The pipe slope downwards must be at least 3°. Fill up
the system with water before connecting the unit to the power mains! The U-trap must be lled with water at all times during the unit
operation. Make sure that the water ows freely into the sewage collection system or otherwise condensed water may build up in the
unit during heat recovery.
The condensate drainage system is designed for normal operation in premises with air temperatures above 0 °C. If the expected air
temperatures are below 0 °C the condensate drainage system must be equipped with heat insulation and pre-heating facilities.
CONDENSATE DRAINAGE
Fig. 7. Condensate drainage
min 3
°
drain pipe
U-trap
sewage system
tube
tube
min 3°
Precautions:
The unit is designed for mounting on a rigid and stable structure in compliance to the technical data and unit weight.
The unit is mounted with anchor bolts. Make sure that a mounting construction has sucient load capacity for the unit weight.
Otherwise reinforce an installation place by beams, etc. Then insert threaded rods inside the threaded dowels in the ceiling. If the
construction rigidity is not sucient enough it can resonate with the unit and generate abnormal noise and vibration.
While mounting the unit provide enough service space and an access door for maintenance of the lters, heat exchanger and fans.
One access door is required for each unit. For details, refer to the outline drawing, g. 1.
Install anchor bolts M8 into the xation for the ceiling suspension mount and x it with nuts and washers.
Make sure the unit casing has no foreign objects inside, like paper and foil.
If the threaded bolts used for the unit mounting are too short the unit can generate abnormal noise and resonate with the ceiling.
If the unit connection place to the spiral seam duct is supposed to be the source of the abnormal noise, replace the spiral air duct with
a exible air duct. The precautions referred above are normally sucient to solve the resonance problem.
The exible connectors may be also installed to troubleshoot the resonating problem.
To attain the best performance of the unit while mounting provide a straight 1 m duct section on both sides of the unit.
Access to the unit must be prevented by installing a protecting grille or any other device with the mesh width up to 12.5 mm.
DO NOT CONNECT SEVERAL DRAIN PIPES FROM SEVERAL AIR HANDLING UNITS TO ONE U-TRAP!
DIRECT CONDENSATE OUTSIDE WITHOUT CONNECTION TO DRAIN SYSTEM IS NOT ALLOWED!