BLAUBERG KOMFORT EC DBW 2000 Suspended Heat Recovery Air Handling Units User Manual
- June 9, 2024
- BLAUBERG
Table of Contents
- SAFETY REQUIREMENTS
- PURPOSE
- DESIGNATION KEY
- TECHNICAL DATA
- DESIGN AND OPERATING PRINCIPLE
- MOUNTING AND SET-UP
- CONNECTION TO POWER MAINS
- TECHNICAL MAINTENANCE
- TROUBLESHOOTING
- STORAGE AND TRANSPORTATION REGULATIONS
- MANUFACTURER’S WARRANTY
- CERTIFICATE OF ACCEPTANCE
- Read User Manual Online (PDF format)
- Download This Manual (PDF format)
BLAUBERG KOMFORT EC DBW 2000 Suspended Heat Recovery Air Handling Units
User Manual
This user’s manual is a main operating document intended for technical,
maintenance, and operating staff.The manual contains information about
purpose, technical details, operating principle, design, and installation of
the KOMFORT EC DBW 2000/3000 unit and all its modifications.
Technical and maintenance staff must have theoretical and practical training
in the field of ventilation systems and should be able towork in accordance
with workplace safety rules as well as construction normsand standards
applicable in the territory of the country.
SAFETY REQUIREMENTS
All user’s manual requirements as well as the provisions of all the applicable local and nationalconstruction, electrical, and technical norms and standards must be observed when installingand operating the unit.
.Disconnect the unit from the power supply prior to any connection, servicing, maintenance, andrepair operation.
Only qualified electricians with a work permit for electrical units up to 1000 V areallowed for installation. The present user’s manual should be carefully read beforebeginning works.
Check the unit for any visible damage of the impeller, the casing, and the
grille before starting installation. The casing internals must be free of any
foreign objects that can damage the impeller blades.
While mounting the unit, avoid compression of the casing! Deformation of the
casing may result in motor jam and excessive noise.
Misuse of the unit and any unauthorised modifications are not allowed.
Do not expose the unit to adverse atmospheric agents (rain, sun, etc.).
Transported air must not contain any dust or other solid impurities, sticky
substances, or fibrous materials.
Do not use the unit in a hazardous or explosive environment containing
spirits, gasoline, insecticides, etc.
Do not close or block the intake or extract vents in order to ensure the
efficient air flow.
Do not sit on the unit and do not put objects on it.
The information in this user’s manual was 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.
Never touch the unit with wet or damp hands.Never touch the unit when
barefoot.
This unit is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the unit by a person responsible for their safety. Children should be supervised to ensure that they do not play with the unit.
Connection to the mains must be made through a disconnecting device, which is
integrated into the fixed wiring system in accordance with the wiring rules
for design of electrical units, and has a contact separation in all poles that
allows for full disconnection under overvoltage category III conditions.
If the supply cord is damaged, it must be replaced by the manufacturer, its
service agent, or similarly qualified persons in order to avoid a safety
hazard.
CAUTION: In order to avoid a safety hazard due to inadvertent resetting of the thermal cutout, this unit must not be supplied through an external switching device, such as a timer, or connected to a circuit that is regularly switched on and off by the utility.
Ensure that the unit is switched off from the supply mains before removing the
guard.
WARNING: If there are any unusual oscillating movements, immediately stop
using the unit and contact the manufacturer, its service agent or suitably
qualified persons. The replacement of parts of the safety suspension system
device shall be performed by the manufacturer, its service agent or suitably
qualified persons.
Fixing means for attachment to the ceiling such as hooks or other devices
shall be fixed with a sufficient strength to withstand 4 times the weight of
the appliance.
The mounting of the suspension system shall be performed by the manufacturer,
its service agent or suitably qualified persons.
The appliance is to be installed so that the blades are more than 2.3m above
the floor. Precautions must be taken to avoid the back-flow of gases into the
room from the open flue of gas or other fuel-burning appliances.
THE PRODUCT MUST BE DISPOSED SEPARATELY AT THE END OF ITS SERVICE LIFE. DO NOT
DISPOSE THE UNIT AS UNSORTED DOMESTIC WASTE.
PURPOSE
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 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 UNAUTHORISED ACCESS BY UNATTENDED CHILDREN.
DELIVERY SET
Name
|
Number
---|---
Unit
| 1 pc.
User’s manual|
1 pc.
Packing box
|
1 pc.
DESIGNATION KEY
TECHNICAL DATA
The unit is designed for indoor application with the ambient temperature
ranging from +1 °C up to +40 °C and relative humidity up to 60 % without
condensation. In cold, damp rooms, there is a possibility of freezing or
condensation inside and outside the casing.
In order to prevent condensation on the internal walls of the unit, it is
necessary that the surface temperature of the casing is 2-3 °C above the dew
point temperature of the transported air.
The unit should be operated continuously, and in cases where ventilation is
not necessary, reduce the air flow of the fans to a minimum (20%). This will
ensure a favorable indoor climate and reduce the amount of condensation inside
the unit, which can damage electronic components. Never use the unit for
dehumidification, for example, of new buildings.
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.
TECHNICAL DATA
MODEL | KOMFORT EC DBW 2000 | KOMFORT EC DBW 3000 |
---|---|---|
Supply voltage, 50 (60) Hz [V] | 1~ 230 | 3~ 400 |
Maximum fan power [W] | 876 | 2226 |
Number of water heater rows | 2 | 2 |
Maximum unit current [A] | 5.3 | 3.5 |
Maximum air flow [m3/h] | 2100 | 4300 |
RPM [min-1] | 2920 | 3400 |
Sound pressure level at 3 m distance [dBA] | 36 | 46 |
Transported air temperature [°C] | -25…+40 | |
Casing material | Aluzinc | |
Insulation, mineral wool [mm] | 25 | |
Filtering class of the extract filter | G4 | |
Filtering class of the supply filter | G4 | |
Connected air duct diameter [mm] | 315 | 400 |
Weight [kg] | 140 | 268 |
Heat recovery efficiency [%] | 50…67 | 59…72 |
Heat exchanger type | Cross-flow | |
Heat exchanger material | Aluminium | |
SEC class | NRVU | NRVU |
OVERALL DIMENSIONS OF THE UNIT
Dimensions [mm]
Model | Ø D | В | В1 | В2 | ВЗ | Н | Н1 | Н2 | L | L1 | Ø d |
---|---|---|---|---|---|---|---|---|---|---|---|
KOMFORT EC DBW 2000 | 315 | 950 | 405 | 225 | 500 | 762 | 367 | 501 | 1400 | 1453 |
9
KOMFORT EC DBW 3000| 400| 1265| 563| 347| 570| 881| 427| 300| 1835|
1888| 9
DESIGN AND OPERATING PRINCIPLE
Warm stale extract air from the room flows into the unit, where it is filtered
by the extract filter, then air flows through the heat exchanger and is
exhausted outside by the extract fan.
Clean cold air from outside is moved to the supply filter. Then filtered air
flows through the heat exchanger 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 thermal energy losses and space heating expenses in
cold seasons.
The unit is equipped with a detachable service panel for repair and
maintenance operations and a cover enabling access to the control system
components.
OPERATING LOGIC
The unit is equipped with supply and extract centrifugal single-inlet fans
with backward curved blades; maintenance-free EC motors with an external rotor
and a built-in overheating protection; a plate counterflow heat exchanger and
a water heater.
The supply G4 filter cleans supply air flow and prevents contamination of the
unit parts.
The extract G4 filter prevents contamination of the unit components.
Some condensate may form during heat recovery. The condensate is collected in
the drain pan and is removed from the unit through the drain pipes.
MOUNTING AND SET-UP
While mounting the unit provide enough space for its maintenance or repair work.
MINIMUM DISTANCE FOR ACCESSING THE UNIT
Type | KOMFORT EC DBW 2000 | KOMFORT EC DBW 3000 |
---|---|---|
min A, mm | 500 |
850
The distance is selected depending on the installation conditions at the discretion of the installer.
UNIT INSTALLATION
The unit must be suspended to the ceiling on the threaded rod that is fixed
inside a dowel.
To attain the best performance of the unit and to minimise turbulence-induced
air pressure losses, connect a straight air duct section on both sides of the
unit while mounting.
Minimum straight air duct length:
- equal to 1 air duct diameter on the intake side
- equal to 3 air duct diameters on the outlet side
If the air ducts are too short or not connected, protect the unit parts from ingress of foreign objects, e.g. by covering the spigots with a protecting grille or other protecting device with mesh width not more than 12.5 mm to prevent uncontrollable access to the fans.
READ THE USER’S MANUAL BEFORE INSTALLING THE UNIT.
WATER HEATER CONNECTION
In order to attain maximum power the water heater should be counterflow
connected. In case of the direct-flow connection, the water heater has lower
power but higher frost-resistant properties. Mixing unit diagram (not included
in the delivery set) of the water heater is shown in the following figure.
MIXING UNIT DIAGRAM
- Water heater
- Shutoff valves
- Circulation pump
- Bypass damper
- Boiler
- Regulating valve of the heater with an actuator
- Non-return valve
- Coarse filter
- Water pressure sensor (nc).
HEAT MEDIUM REGULATING VALVE ACTUATOR
Caution!
- The unit operates in two modes: Winter and Summer.
- The Winter mode is activated at outdoor temperature below +10 °C.
- At higher outdoor temperature the unit operates in Summer mode.
- In Summer mode the unit operates regardless of the return heat medium temperature in the mixing unit.
- In Winter mode the unit has following temperature limits: the unit will not be turned on at a return heat medium temperature below +40 °C.
- When the return heat medium temperature reaches +40 °C and higher, the unit will turn on with a delay of 90 seconds.
- The unit turns off when the return heat medium temperature falls below +20 °C.
Safety precautions
The unit must be mounted to a rigid and stable structure. The unit must be
suspended using threaded rods. Before starting mounting check that the
mounting structure has sufficient loading capacity for the unit weight.
Otherwise reinforce the mounting location with beams or similar elements. If
the threaded rods used for the unit mounting are too short, the unit can
generate abnormal noise resulting from resonance with the ceiling. Use
threaded rods of sufficient length to prevent resonance. If the abnormal noise
is generated at the spiral air duct joint, replace the spiral air duct with a
flexible one to prevent resonance. Flexible anti-vibration connectors are
another alternative for dealing with resonance.
CONDENSATE DRAINAGE
The drain pan is equipped with two drain pipes for condensate removal outside
the unit. Connect the drain pipe, the U-trap (not included in the standard
delivery set) and the sewerage system with metal, plastic or rubber pipes.
While laying the connection pipes provide the slope of minimum 3° downwards.
Fill the system with water prior to connecting it to power supply! The U-trap
must always be filled with water. Provide free drainage for the condensed
water, otherwise it is accumulated inside the unit that may cause the
equipment damage and condensate outflow to the room. The condensate drainage
system is designed for normal operation in premises with air temperatures
above 0 °C! If the expected ambient air temperatures are below 0 °C, the
condensate drainage system must be equipped with heat insulation and
preheating facilities.
CONNECTION TO POWER MAINS
DISCONNECT THE UNIT FROM POWER SUPPLY PRIOR TO ANY OPERATIONS WITH THE UNIT. THE UNIT MUST BE CONNECTED TO POWER MAINS 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 alternating current power mains via
insulated, durable and thermal-resistant cords (cables, wires) with respective
cross section not less than 2.5 mm2 The cable cross-section is given for
reference only. The applicable cable cross section must be selected depending
on the wire type, its maximum temperature and insulation, the maximum current,
the wire length and its installation method. Connect the unit to power mains
through the external automatic circuit breaker with a magnetic trip integrated
into the fixed wiring system with the rated current not below the rated
current consumption.
The terminal block with the prewired control unit is located inside the
control unit compartment.
To connect the power and the ground cable, route the cables through the
airtight electric lead-in in the unit casing and connect these to the terminal
block.
The wiring diagram for connection of the air handling unit to power supply is
on the back side of the lid.
EXTERNAL CONNECTIONS DIAGRAM OF KOMFORT EC DBW 2000 S21
Designation | Name | Model | **Wire***** | Note |
---|---|---|---|---|
RT1 | Outdoor temperature sensor | 2 x 0.25 mm2 | ||
M3* | Circulation pump | 2 x 0,75 mm2 | ||
SM3* | Three-way valve electric actuator | 3 x 0,75 mm2 | ||
BP1* | Heating medium flow control sensor | NC | 2 x 0,75 mm2 | |
DD1* | Heating medium pressure switch | NC | 2 x 0,75 mm2 | remove the jumper |
РК1* | Contact from fire alarm panel | NC | 2 x 0,75 mm2 | remove the jumper |
Boost* | On/Off contacts of the Boost mode | NO | 2 x 0,75 mm2 | |
CO2* | External CO2 sensor | 3 x 0,25 mm2 | ||
Р1* | External control panel | 4 x 0,25 mm2 | ||
SМ1* | Supply air damper actuator | NO | 2 x 0,75 mm2 | 3 A, 30VDC/~250 AC |
SМ2 * | Exhaust air damper actuator | NO | 2 x 0,75 mm2 | 3 A, 30VDC/~250 AC |
CCU* | Cooler control | NO | 2 x 0,75 mm2 | 3 A, 30VDC/~250 AC |
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.
Maximum connecting cable length is 20 m!
Output parameters: terminals 25-30 — 3 A, 30 V DC/~250 V AC (“dry contact””)
ELECTRIC SHOCK HAZARD!
EXTERNAL CONNECTIONS DIAGRAM OF KOMFORT EC DBW 3000 S21
Designation | Name | Model | **Wire***** | Note |
---|---|---|---|---|
RT1 | Outdoor temperature sensor | 2 x 0.25 mm2 | ||
M3* | Circulation pump | 2 x 0,75 mm2 | ||
SM3* | Three-way valve electric actuator | 3 x 0,75 mm2 | ||
BP1* | Heating medium flow control sensor | NC | 2 x 0,75 mm2 | |
DD1* | Heating medium pressure switch | NC | 2 x 0,75 mm2 | remove the jumper |
РК1* | Contact from fire alarm panel | NC | 2 x 0,75 mm2 | remove the jumper |
Boost* | On/Off contacts of the Boost mode | NO | 2 x 0,75 mm2 | |
CO2* | External CO2 sensor | 3 x 0,25 mm2 | ||
Р1* | External control panel | 4 x 0,25 mm2 | ||
SМ1* | Supply air damper actuator | NO | 2 x 0,75 mm2 | 3 A, 30VDC/~250 AC |
SМ2 * | Exhaust air damper actuator | NO | 2 x 0,75 mm2 | 3 A, 30VDC/~250 AC |
CCU* | Cooler control | NO | 2 x 0,75 mm2 | 3 A, 30VDC/~250 AC |
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.
Maximum connecting cable length is 20 m!
Output parameters: terminals 25-30 — 3 A, 30 V DC/~250 V AC (“dry contact””).
TECHNICAL MAINTENANCE
DISCONNECT THE UNIT FROM POWER SUPPLY BEFORE ANY MAINTENANCE OPERATIONS!
MAKE SURE THE UNIT IS DISCONNECTED FROM POWER MAINS BEFORE REMOVING THE
PROTECTION
Maintenance operations of the unit are required 3-4 times per year. They include general cleaning of the unit and the following operations:
-
Filter maintenance (3-4 times per year).
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. Vacuum cleaning is allowed. After two consecutive cleanings filters must be replaced. For new filters contact the Seller. Sequence of filter removal: -
Unlatch the service panel.
-
Open the service panel carefully, supporting it with the hand.
-
Remove the filters from the unit
-
Heat exchanger maintenance (once per year).
Some dust may accumulate on the heat exchanger even in case of regular maintenance of the filters. To maintain 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. In case of severe contamination, the heat exchanger can be washed with water. After cleaning, reinstall the heat exchanger into the unit.
Sequence of heat exchanger removal: -
Unlatch the service panel.
-
Open the panels supporting those with the hand.
-
Remove the drain pan after unscrewing 4 screws.
-
Unscrew 9 self-tapping screws holding the heat exchanger and remove it from the unit. Be careful when removing the heat exchanger.
-
Fan inspection (once a year).
Even regular technical maintenance of the filters and the heat exchanger may not completely prevent dust accumulation in the fans which reduces the fan capacity and impairs supply air volume into the premises. The fans must be cleaned by a service technician. -
Condensate drain maintenance (4 times a year).
The drain pipes may get clogged with the extracted particles. Pour some water inside the drain pan and check the pipe for clogging. Clean the U-trap and drain pipe if required. -
Air intake maintenance (twice a year).
Leaves and other pollutions can clog the supply air grille and reduce the unit performance and supply air volume. Check the supply grille twice per year and clean it as required. -
Duct system maintenance (every 5 years).
Even regular fulfilling of all the prescribed above maintenance operations may not completely prevent dust accumulation in the air ducts which reduces the air quality and the unit performance. The air duct maintenance includes regular cleaning or replacement.
TROUBLESHOOTING
IF UNIDENTIFIED NOISES OR ODOURS SHOULD ARISE AND IN CASE OF DEFORMATION OF ELEMENTS, VIBRATION, TERMINATION OF AIR SUPPLY/EXTRACTION OR REDUCED SYSTEM PERFORMANCE, IMMEDIATELY DISCONNECT THE UNIT FROM POWER SUPPLY AND CONTACT THE SELLER FOR THE VENTILATION SYSTEM DIAGNOSTICS. DIAGNOSTICS MUST BE CARRIED OUT BY QUALIFIED SPECIALISTS.
POSSIBLE REASONS AND TROUBLESHOOTING
Problem | Possible reasons | Troubleshooting |
---|---|---|
The fan(s) does (do) not start when the unit is on. | No power supply. | Make |
sure the power supply line is connected correctly, otherwise troubleshoot the
connection error.
The mode in which the fans are turned off is set.| Change the mode with the
help of the control panel.
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.
The 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.
High noise, vibration.| The fan or casing screw connection is loose.| Tighten
the screw connection of the fans or the casing.
No anti-vibration connectors on air duct pipe flanges.| Install anti-vibration
connectors.
Water leakage.| The drainage system is soiled, damaged, or installed
incorrectly.| Clean the drain line.
Check the drain line slope angle. Make sure that the U-trap is filled with
water and the drain pipes are frost protected.
If troubleshooting steps have failed, contact the Seller of the product.
In case of faults not described in the table, contact the Seller for further information
STORAGE AND TRANSPORTATION REGULATIONS
- Store the unit in the manufacturer’s original packaging box in a dry closed ventilated premise with temperature range +5 ˚C…+40 ˚C 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.
MANUFACTURER’S WARRANTY
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 Compatibility (EMC) Directive 2014/30/EU of the European Parliament and of the Council, Low Voltage Directive (LVD) 2014/35/EU of the European Parliament and of the Council and CE-marking Council 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.
CERTIFICATE OF ACCEPTANCE
Unit Type | Heat recovery air handling unit |
---|---|
Model | |
Serial Number | |
Manufacture Date | |
Quality Inspector’s Stamp |
SELLER INFORMATION
Seller|
---|---
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|
Seller’s Stamp
INSTALLATION CERTIFICATE
The unit __ is installed pursuant to the requirements stated in the present user’s manual.
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:|
Installation Stamp
WARRANTY CARD
Unit Type | Heat recovery air handling unit |
---|---|
Model | |
Serial Number | |
Manufacture Date | |
Purchase Date | |
Warranty Period | |
Seller |
Seller’s Stamp
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>