BLAUBERG KOMFORT Roto EC S400 User manual

HEAT RECOVERY AIR HANDLING UNIT
USER’S MANUAL
EN
KOMFORT Roto EC S400
KOMFORT Roto EC SE400
KOMFORT Roto EC S600
KOMFORT Roto EC SE600

SAFETY REQUIREMENTS
• Please read the user’s manual carefully prior to installing and operating the unit.
• All user’s manual requirements as well as the provisions of all the applicable local and national construction, electrical, and technical
norms and standards must be observed when installing and operating the unit.
• The warnings contained in the user’s manual must be considered most seriously since they contain vital personal safety
information.
• Failure to follow the rules and safety precautions noted in this user’s manual may result in an injury or unit damage.
• After a careful reading of the manual, keep it for the entire service life of the unit.
• While transferring the unit control, the user’s manual must be turned over to the receiving operator.
UNIT INSTALLATION AND OPERATION SAFETY PRECAUTIONS
• Disconnect the unit from power mains prior
to any installation operations. • Unpack the unit with care.
• The unit must be grounded!
• While installing the unit, follow the safety
regulations specific to the use of electric
tools.
This user’s manual is a main operating document intended for technical, maintenance, and operating staff.
The manual contains information about the purpose, technical details, operating principle, design, and installation of the
KOMFORT Roto EC S(E)400/600 unit (-s) and all of its (their) modifications.
Technical and maintenance staff must have theoretical and practical training in the field of ventilation systems and should be able to
work in accordance with workplace safety rules as well as construction norms and standards applicable in the territory of the country.
The information in this user’s manual is correct at the time of the document’s preparation.
The Company reserves the right to modify the technical characteristics, design, or configuration of its products at any time in order to
incorporate the latest technological developments.
No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means in any information
search system or translated into any language in any form without the prior written permission of the Company.
CONTENTS
Safety requirements..................................................................................................................................................................... 2
Purpose................................................................................................................................................................................................ 4
Delivery set........................................................................................................................................................................................ 4
Designation key.............................................................................................................................................................................. 4
Technical data.................................................................................................................................................................................. 5
Design and operating principle ........................................................................................................................................... 6
Connection to power mains .................................................................................................................................................. 10
Technical maintenance.............................................................................................................................................................. 12
Storage and transportation regulations.......................................................................................................................... 13
Manufacturer’s warranty........................................................................................................................................................... 14
Certificate of acceptance.......................................................................................................................................................... 15
Seller information.......................................................................................................................................................................... 15
Installation certificate.................................................................................................................................................................. 15
Warranty card................................................................................................................................................................................... 15
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• Do not change the power cable length
at your own discretion. Do not bend the
power cable. Avoid damaging the power
cable. Do not put any foreign objects on the
power cable.
• Do not lay the power cable of the unit in
close proximity to heating equipment.
• Do not use damaged equipment or cables
when connecting the unit to power mains.
• Do not operate the unit outside the
temperature range stated in the user’s
manual. Do not operate the unit in
aggressive or explosive environments.
• Do not touch the unit controls with wet
hands. Do not carry out the installation and
maintenance operations with wet hands.
• Do not wash the unit with water. Protect
the electric parts of the unit against ingress
of water.
• Do not allow children to operate the unit. • Disconnect the unit from power mains prior
to any technical maintenance.
• Do not store any explosive or highly
flammable substances in close proximity to
the unit.
• When the unit generates unusual sounds,
odour, or emits smoke, disconnect it from
power supply and contact the Seller.
• Do not open the unit during operation. • Do not direct the air flow produced by the
unit towards open flame or ignition sources.
• Do not block the air duct when the unit is
switched on.
• In case of continuous operation of the unit,
periodically check the security of mounting.
• Do not sit on the unit and avoid placing
foreign objects on it. • Use the unit only for its intended purpose.
THE PRODUCT MUST BE DISPOSED SEPARATELY AT THE END OF ITS SERVICE LIFE.
DO NOT DISPOSE THE UNIT AS UNSORTED DOMESTIC WASTE.
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DELIVERY SET
DESIGNATION KEY
PURPOSE
THE UNIT SHOULD NOT BE OPERATED BY CHILDREN OR PERSONS WITH REDUCED
PHYSICAL, MENTAL, OR SENSORY CAPACITIES, OR THOSE WITHOUT
THE APPROPRIATE TRAINING.
THE UNIT MUST BE INSTALLED AND CONNECTED ONLY BY PROPERLY QUALIFIED
PERSONNEL AFTER THE APPROPRIATE BRIEFING.
THE CHOICE OF UNIT INSTALLATION LOCATION MUST PREVENT UNAUTHORIZED
ACCESS BY UNATTENDED CHILDREN.
The unit is designed to ensure continuous mechanical air exchange in houses, offices, hotels, cafes, conference halls, and other utility
and public spaces as well as to recover the heat energy contained in the air extracted from the premises to warm up the filtered stream
of intake air.
The unit is not intended for organizing ventilation in swimming pools, saunas, greenhouses, summer gardens, and other spaces with
high humidity.
Due to the ability to save heating energy by means of energy recovery, the unit is an important element of energy-efficient premises.
The unit is a component part and is not designed for stand-alone operation.
It is rated for continuous operation.
Transported air must not contain any flammable or explosive mixtures, evaporation of chemicals, sticky substances, fibrous materials,
coarse dust, soot and oil particles or environments favourable for the formation of hazardous substances (toxic substances, dust,
pathogenic germs).
THE UNIT CAN BE USED IN KITCHEN SPACES ONLY IF THERE IS A GREASE FILTER
INSTALL A KITCHEN HOOD WITH A GREASE FILTER IF AIR IS EXTRACTED FROM THE
COOKING SURFACE
KOMFORT Roto EC S E 400 S17
Control
S17 — th-Tune control panel with an LCD display
S18 — pGD1 control panel with an LCD display
S21 — wireless control system
Rated air ow [m3/h]
Electric heater
_ — without an electric heater
E — with an electric heater
Spigot orientation
S — vertical
Motor type
EC — electronically commutated
Series of units
Roto — heat recovery air handling unit with a rotary heat exchanger
NAME NUMBER
Air handling unit 1 item
User's manual 1 item
Control panel* 1 item
Fastening kit 1 item
Packing box 1 item
*Control panel is not included in delivery set of units equipped with S21 controller.
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TECHNICAL DATA
W L
H1 H
15
L1 L3
L2
L1
W1 W2 W1
D
D1
Model Dimensions [mm]
W L H H1 W1 W2 L1 L2 L3 DD1
KOMFORT ROTO EC SE400 747 528 755 675 167 444 149 228 111 160 100
KOMFORT ROTO EC SE600 819 628 852 772 167 478 183 262 126 160 125
OVERALL DIMENSIONS OF UNITS MM
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 %.
In order to prevent condensation on the internal walls of the units, it is necessary that the surface temperature of the casing is 2-3 °C higher
than the dew point temperature of the transported air.
The unit is rated as a Class I electrical appliance.
Hazardous parts access and water ingress protection rating:
• IP22 for the unit connected to the air ducts
• IP44 for the unit motors
The unit design is constantly being improved, thus some models may be slightly different from those described in this manual.
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TECHNICAL DATA
MODEL KOMFORT ROTO
EC S400
KOMFORT ROTO
EC SE400
KOMFORT ROTO
EC S600
KOMFORT ROTO
EC SE600
Unit voltage [V/50 (60) Hz] ~1-230
Maximum unit power (without a heater) [W] 200 405
Maximum heater power [W] - 1400 -2800
Total unit power [W] 200 1600 405 3205
Maximum unit current (without a heater) [A] 1.4 2.6
Maximum heater current [A] - 6.1 - 12.2
Maximum unit current [A] 1.4 7.5 2.6 14.8
Maximum air flow [m3/h] 440 670
RPM [min-1] 3280 3230
Sound pressure level at 3 m distance [dBA] 33 35
Transported air temperature [°С] -25...+40
Casing material painted steel
Insulation 40 mm mineral wool
Filter: extract G4
supply G4, F7
Connected air duct diameter [mm] 160 200
Weight [kg] 81 2 90 92
Heat recovery efficiency [%] from 76 up to 85 from 81 up to 89
Heat exchanger type rotary
Heat exchanger material aluminium
SEC class А

DESIGN AND OPERATING PRINCIPLE
The unit has the following operating principle:
Warm stale extract air from the room flows to the unit where it is filtered. Then the air is moved through the rotary heat exchanger and
is exhausted outside with the exhaust fan. Clean cold air from outside is moved to the intake filter. Then filtered air flows through the
rotary heat exchanger and the electric heater (for the KOMFORT Roto EC SE400/600 units) where it is warmed up to the set temperature
and is moved to the room with the supply fan. Heat energy of warm extract air is transferred to clean intake fresh air from outside and
warms it up. Heat recovery minimizes losses of electric energy and space heating expenses in cold seasons and cooling expanses in
warm seasons.
UNIT OPERATION PRINCIPLE SERVICE SIDE VIEW
Intake air
Extract air
Supply air
Exhaust air
Terminal box
Air from the kitchen hood
Service panel
Rotary heat exchanger
Control unit
Humidity sensor (option)
Rotary heat exchanger drive
Supply fan
Extract air filter
Electric heater
(only for the KOMFORT Roto EC SE)
Extract fan
Supply filter
An exhaust kitchen hood may be optionally connected to the unit. The kitchen hood must be equipped with an air damper to shut off
the exhaust duct when the kitchen hood is not in use.
The unit is a framework construction made of rigidly fixed panels. The panels are made of aluminium and galvanized sheets, internally
filled with a heat- and sound-insulated layer of mineral wool. The air handling unit is equipped with quick-detachable service panels for
scheduled repair and maintenance operations.
Route power and ground cables through the screwed cable glands to connect those to the terminal block and the grounding bus
located in the control unit. The wiring diagram is shown on the control unit cover.
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READ THE USER'S MANUAL BEFORE INSTALLING THE UNIT.
THE UNIT MUST BE MOUNTED ON A PLANE SURFACE.
MOUNTING OF THE UNIT TO AN UNEVEN SURFACE CAN LEAD TO THE UNIT CASING
DISTORTION AND OPERATION DISTURBANCE.
MOUNTING AND SETUP
While mounting the unit provide enough access for maintenance or repair work.
The minimum recommended clearances between the unit and the adjoining walls are given in the figure below.
When selecting a mounting location of the unit, provide free opening of the service panel.
To get the best performance of the unit and to minimize turbulence-induced air pressure losses, connect the straight air duct section to
the spigots on both sides of the unit while installing.
Minimum straight air duct length:
• equal to 1 air duct diameter on the intake side
• equal to 3 air duct diameters on outlet side
If the air ducts are too short or not connected, protect the unit parts from ingress of foreign objects.
To prevent uncontrollable access to the fan, the spigots may be covered with a protecting grille or other protecting device with mesh
width not more than 12.5 mm.
While installing the unit, ensure convenient access for subsequent maintenance and repair.
The unit must be mounted on a plane wall.
Installing the unit to an uneven surface could lead to the unit’s casing distortion and operation disturbance.
The unit is designed for mounting on a horizontal plane as well as for wall mounting with a fixing bracket that is fastened with three
screws and dowels (not included in the delivery set).
MINIMUM DISTANCE FOR ACCESSING THE UNIT
min 150
min A
Model A [mm]
KOMFORT Roto EC S(E)400 750
KOMFORT Roto EC S(E)600 800
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UNIT WALL MOUNTING
1. Attach the wall mounting bracket to the wall using dowels with
screws (not included in the delivery set). Attach the wall mounting
bracket to the wall considering the wall material and the unit
weight.
2. Install the unit on the mounting bracket. Suspend it carefully.
Make sure the unit is fastened securely prior to operation.
UNIT FLOOR MOUNTING
Place the unit on a flat, stable surface that has sufficient load
capacity matching the unit weight and meets safety requirements.
Ensure a stable position of the unit by screwing and unscrewing
its feet.
HUMIDITY SENSOR FS2 MOUNTING NOT INCLUDED IN THE DELIVERY SET
The humidity sensor is not included in the delivery set and can be ordered separately.
The humidity sensor must be installed prior to unit mounting.
Install the humidity sensor through the extract spigot into the mount on the extract air duct panel and connect the humidity sensor
contact socket to the respective contact socket on the control unit.
1
2
3
1
2
3
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SERVICE SIDE CHANGE
1. Make sure of the correct unit service side selection. Unit mounting position should enable free excess to the service panel for
maintenance and service operations.
Intake air
Intake air
Extract air
Extract air
Supply air
Supply air
Exhaust air Exhaust air
Air from the exhaust hood
Air from the exhaust hood
2. Release the latches, disconnect the ground cable and remove the service panel.
3. Remove the latches and move them to the opposite side. Remove the back panel by undoing the four screws.
4. Move the service panel to the opposite side, connect it using the ground cable and install in the reverse order.
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CONNECTION TO POWER MAINS
POWER OFF THE POWER SUPPLY PRIOR TO ANY OPERATIONS WITH THE UNIT.
THE UNIT MUST BE CONNECTED TO POWER SUPPLY BY A QUALIFIED ELECTRICIAN.
THE RATED ELECTRICAL PARAMETERS OF THE UNIT ARE GIVEN ON THE
MANUFACTURER’S LABEL.
ANY TAMPERING WITH THE INTERNAL CONNECTIONS IS PROHIBITED
AND WILL VOID THE WARRANTY.
• The unit is rated for connection to 1~230 V/50 (60) Hz power mains.
• The unit must be connected to power mains using insulated electric conductors (cables, wires). The actual wire cross section
selection must be based on the maximum load current, maximum conductor temperature depending on the wire type, insulation,
length and installation method.
• The external power input must be equipped with an automatic circuit breaker built into the stationary wiring to open the electric
circuit in case of overload or short-circuit. The circuit breaker installation place must provide quick access for emergency shutdown
of the unit. The trip current of the automatic circuit breaker QF must exceed the maximum current consumption of the unit (refer
to the technical data table). The recommended trip current of the circuit breaker is the next current in the standard trip current row
following the maximum current of the connected unit. The automatic circuit breaker is not included in the delivery set.
For accessing the terminal block undo the screws of the terminal box cover and remove it.
External connections diagram of the KOMFORT Roto EC S(E)400/600 S17/S18 unit
2 1
L
SM1*
N
2 1
L
SM2*
N
0-10 V indoor humidity sensor connection (it is also possible to connect a VOC or a CO2sensor)
Normally opened contact from relay sensor or switch Condenser unit activation signal (no-contact, 16 A)
Power input 230 VAC
2 1
PK1*
1
gnd
2
R+
3
R-
4
GND~
5
~24V
6
0-10V
7
GND
8
~24V
9
NO
10
NO
11
NO
12
NO
13
2
14
1
15
2
16
1
17
NO
18
NO
19
N
20
L
21
N
22
L1
23
GND Green
Grey Black Y/G
Blue
Brown
Yellow Brown Grey White
P1** th-Tune
Rx+/Tx+
Rx-/Tx-
GND~
~24V
P2* Kitchen hood
TS1
1 2 1 2
L1
PE
X1
– Electric shock hazard!
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Design Name Model Wire***
SM1* Exhaust or supply air damper electric actuator LF230 2x0.75 mm2
SM2* Exhaust or supply air damper electric actuator LF230 2x0.75 mm2
PK1* Contact from fire alarm panel NC 2x0.75 mm2
P1** Remote control panel th-Tune 5x0.25 mm2
P2* Kitchen hood
*The appliances are not supplied with the unit, are available on the separate order.
** The unit can be equipped with a th-Tune control panel.
*** Wire cross-section at a cable length of maximum 100 m.
Maximum cable length from controller to control panel
Cable type Distance between the controller and the
control panel
Phone cable up to 50 m
AWG24 shielded cable up to 200 m
External connections diagram of the KOMFORT Roto EC S(E)400/600 S21 unit
1 2
1
2
GNDGND 0-10V A B +24V+24V
12
PK1 *
KH1 .1*
KH1 .2*
12 1212 12
Boost* CO2* P1* SM1* SM2*
L1
12
CCU*
X1
12 12
**U
**U
LN
19 20 N L1
NC C PE
PE
LNPEC
NO NO NO
C C C
A B 0-10V +24V +24V NO GND GND
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
Power input
230 V, 50 Hz
Brown
Yellow
Y./G. Blue Brown
Green
Grey Black
White
– Electric shock hazard!
Design Name Contact type Cable type Note
SМ1* Supply air damper actuator NO
2 x 0.75 mm2
3 A, 30DC/~250 AC
SМ2 * Exhaust air damper actuator NO 3 A, 30DC/~250 AC
РК1* Contact from fire alarm panel NC Remove the jumper
CCU* Cooler control NO 3 A, 30DC/~250 AC
Р1* External control panel 4 x 0.25 mm2
Boost* Contacts ON/OFF Boost NO 2 x 0.75 mm2
CO2* Contacts ON/OFF CO23 x 0.25 mm2
КН1* Kitchen hood 5 x 0.75 mm2
* Is not included in the delivery set.
** The supply voltage (U) of the SM1, SM2 external dampers is selected depending on the type of dampers.
Output parameters: terminals 12-17 - 3 A, 30VDC / ~ 250VAC (“dry contact”).
The maximum cable length from external devices to the terminal block should not exceed 100 meters.
The recommended cable cross-section is shown in the table.
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TECHNICAL MAINTENANCE
3. Fan maintenance (once per year).
Even in case of regular maintenance of the filters, some dust may accumulate inside the fans and reduce the fan performance and supply
air flow. Clean the fans with a soft cloth or brush. Do not use water, aggressive solvents, or sharp objects as they may damage the impeller.
4. Supply air ow control (twice per year).
The supply duct grille may get clogged with leaves and other objects reducing the unit performance and supply air delivery.
Check the supply grille twice per year and clean it as required.
5. Ductwork system maintenance (once in 5 years).
Even regular fulfilling of all the maintenance operations prescribed above may not completely prevent dirt accumulation in the air ducts,
which leads to air pollution and reduces the unit capacity. Duct maintenance means regular cleaning or replacement.
DISCONNECT THE UNIT FROM POWER SUPPLY BEFORE
ANY MAINTENANCE OPERATIONS!
Maintenance operations of the unit are required 3-4 times per year. They include general cleaning of the unit and the following operations:
1. Filter maintenance.
Dirty filters increase air resistance in the system and reduce supply air volume.
The filters require cleaning not less than 3-4 times per year.
When 3 000 operating hours have elapsed, the unit controller generates the filter replacement or cleaning alert. Clean or replace the filters and reset the
hour meter.
Vacuum cleaning is allowed.
After two consecutive cleanings filters must be replaced.
For new filters contact the Seller.
Sequence of filter removal:
1. Disconnect the unit from power mains.
2. Unlatch and open the service panel.
3. Remove the filters.
2. Heat exchanger maintenance (once per year).
Some dust may accumulate on the heat exchanger block even in case of regular maintenance of the filters.
To maintain the high heat recovery efficiency, regular cleaning is required.
To clean the heat exchanger, remove it from the unit and clean the heat exchanger by using compressed air or a vacuum cleaner.
After cleaning re-install the heat exchanger into the unit.
Sequence of heat exchanger removal:
1. Disconnect the unit from power mains.
2. Unlatch and open the service panel.
3. Disconnect the rotary heat exchanger and then pull it to remove.
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POSSIBLE REASONS AND TROUBLESHOOTING
Problem Possible reasons Troubleshooting
The fan(s) does not start
when the unit is on.
No power supply. Make sure the power supply line is connected correctly,
otherwise troubleshoot a connection error.
The motor is jammed, the impeller blades are soiled. Turn the unit off. Troubleshoot the motor jam and the
impeller clogging. Clean the blades. Restart the unit.
Alarm in the system. System alarms are listed below.
Identify the system failure by entering the active alarms
menu and eliminate the alarm. If the system alarm cannot be
eliminated by the user contact the Seller.
Automatic circuit breaker
trips following the unit
turning on.
High current consumption due to short circuit in power
line. Turn the unit off. Contact the Seller.
Low air flow.
Low set fan speed. Set higher speed.
The filters and the fans are clogged, the heat exchanger
is clogged.
Clean or replace the filters, clean the fans, and the heat
exchanger.
Ventilation system elements (air ducts, diffusers, louver
shutters, grilles) are clogged, damaged or closed.
Clean or replace the ventilation system elements, such as air
ducts, diffusers, louvre shutters, grilles.
Cold supply air. The extract filter is soiled. Clean or replace the extract filter.
The unit operates in Cooling mode. Check the unit operation settings.
Noise, vibration.
The impeller(s) is soiled. Clean the impeller(s).
The fan or casing screw connection is loose. Tighten the screw connection of the fans or the casing
against stop.
No anti-vibration connectors on air duct pipe flanges. Install anti-vibration connectors.
SYSTEM ALARMS
Fire alarm. Emergency system shutdown on command from the fire
alarm board. This alarm interrupts the fan operation.
In case of such alarm follow the emergency instructions and
leave the room and the building.
Temperature sensor
failure.
Interruption or shortening in the temperature sensor
circuit. This alarm interrupts the fan operation. Contact the Seller.
Control panel failure. Control panel communication error. Check the connection of the control panel to the controller.
Contact the Seller.
Low supply air
temperature.
The supply air temperature is below +14 °C (factory
setting).
Clean or replace the extract filter. Check the unit operation
settings.
Filter replacement
required. Filter replacement interval expiration. Clean or replace the filters.
STORAGE AND TRANSPORTATION REGULATIONS
• Store the unit in the manufacturer’s original packaging box in a dry closed ventilated premise with temperature range
from +5 ˚С to +40 ˚С and relative humidity up to 70 %.
• Storage environment must not contain aggressive vapors and chemical mixtures provoking corrosion, insulation, and sealing
deformation.
• Use suitable hoist machinery for handling and storage operations to prevent possible damage to the unit.
• Follow the handling requirements applicable for the particular type of cargo.
• The unit can be carried in the original packaging by any mode of transport provided proper protection against precipitation and
mechanical damage. The unit must be transported only in the working position.
• Avoid sharp blows, scratches, or rough handling during loading and unloading.
• Prior to the initial power-up after transportation at low temperatures, allow the unit to warm up at operating temperature for at
least 3-4 hours.
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The product is in compliance with EU norms and standards on low voltage guidelines and electromagnetic compatibility. We hereby
declare that the product complies with the provisions of Electromagnetic Council Directive 2014/30/EU, Low Voltage Directive 2014/35/
EU and CE-marking Directive 93/68/EEC. This certificate is issued following test carried out on samples of the product referred to above.
The manufacturer hereby warrants normal operation of the unit for 24 months after the retail sale date provided the user's observance
of the transportation, storage, installation, and operation regulations. Should any malfunctions occur in the course of the unit operation
through the Manufacturer's fault during the guaranteed period of operation, the user is entitled to get all the faults eliminated by the
manufacturer by means of warranty repair at the factory free of charge. The warranty repair includes work specific to elimination of faults
in the unit operation to ensure its intended use by the user within the guaranteed period of operation. The faults are eliminated by means
of replacement or repair of the unit components or a specific part of such unit component.
The warranty repair does not include:
• routine technical maintenance
• unit installation/dismantling
• unit setup
To benefit from warranty repair, the user must provide the unit, the user's manual with the purchase date stamp, and the payment
paperwork certifying the purchase. The unit model must comply with the one stated in the user’s manual. Contact the Seller for warranty
service.
The manufacturer’s warranty does not apply to the following cases:
• User’s failure to submit the unit with the entire delivery package as stated in the user’s manual including submission with missing
component parts previously dismounted by the user.
• Mismatch of the unit model and the brand name with the information stated on the unit packaging and in the user's manual.
• User’s failure to ensure timely technical maintenance of the unit.
• External damage to the unit casing (excluding external modifications as required for installation) and internal components caused
by the user.
• Redesign or engineering changes to the unit.
• Replacement and use of any assemblies, parts and components not approved by the manufacturer.
• Unit misuse.
• Violation of the unit installation regulations by the user.
• Violation of the unit control regulations by the user.
• Unit connection to power mains with a voltage different from the one stated in the user's manual.
• Unit breakdown due to voltage surges in power mains.
• Discretionary repair of the unit by the user.
• Unit repair by any persons without the manufacturer’s authorization.
• Expiration of the unit warranty period.
• Violation of the unit transportation regulations by the user.
• Violation of the unit storage regulations by the user.
• Wrongful actions against the unit committed by third parties.
• Unit breakdown due to circumstances of insuperable force (fire, flood, earthquake, war, hostilities of any kind, blockades).
• Missing seals if provided by the user’s manual.
• Failure to submit the user’s manual with the unit purchase date stamp.
• Missing payment paperwork certifying the unit purchase.
FOLLOWING THE REGULATIONS STIPULATED HEREIN WILL ENSURE A LONG AND
TROUBLEFREE OPERATION OF THE UNIT.
USER’S WARRANTY CLAIMS SHALL BE SUBJECT TO REVIEW ONLY UPON PRESENTATION
OF THE UNIT, THE PAYMENT DOCUMENT AND THE USER’S MANUAL WITH THE
PURCHASE DATE STAMP.
MANUFACTURER’S WARRANTY
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Unit Type Heat recovery air handling unit
Seller’s Stamp
Model KOMFORT Roto EC S________S___
Serial Number
Manufacture Date
Purchase Date
Warranty Period
Seller
Unit Type Heat recovery air handling unit
Model KOMFORT Roto EC S________S___
Serial Number
Manufacture Date
Quality Inspector’s
Stamp
Seller
Seller’s Stamp
Address
Phone Number
E-mail
Purchase Date
This is to certify acceptance of the complete unit delivery with the user’s manual. The warranty terms are
acknowledged and accepted.
Customer’s Signature
The KOMFORT Roto EC S________S___ unit is installed pursuant to the requirements stated in the
present user's manual.
Installation Stamp
Company name
Address
Phone Number
Installation
Technician’s Full Name
Installation Date: Signature:
The unit has been installed in accordance with the provisions of all the applicable local and national construction,
electrical and technical codes and standards. The unit operates normally as intended by the manufacturer.
Signature:
CERTIFICATE OF ACCEPTANCE
SELLER INFORMATION
INSTALLATION CERTIFICATE
WARRANTY CARD
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