Klimor MCKT-HPX 2 User manual

KLIMOR

OPERATION AND MAINTENANCE MANUAL DTR HPX.08 v.8
PAGE
GDYNIA COMPACT AHU MCKT-HPX 2014 1/14
KLIMOR S.A, 81-035 Gdynia, ul. B. Krzywoustego 5
Fax: [phone]; Tel.: [phone]
Service – Fax: [phone]; Tel.: [phone] Mobile: [phone]
Information in this document is subject to change
email: [e-mail] – Office
[e-mail] – Service
COMPACT VENTILATION UNIT
WITH HEAT PUMP
MCKT-HPX
SERVICE
Tel.: [phone]
Fax: [phone]
Mobile: [phone]
Email: serw[email protected]
GDYNIA, December 2014

KLIMOR
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OPERATION AND MAINTENANCE MANUAL DTR HPX.08 v.8
PAGE
GDYNIA COMPACT AHU MCKT-HPX 2014 2/14
KLIMOR S.A, 81-035 Gdynia, ul. B. Krzywoustego 5
Fax: [phone]; Tel.: [phone]
Service – Fax: [phone]; Tel.: [phone] Mobile: [phone]
Information in this document is subject to change
email: [e-mail] – Office
[e-mail] – Service
TABLE OF CONTENT...........................................................................................................................PAGE
1. GENERAL INFORMATION.................................................................................................................3
2. TECHNICAL SPECIFICATION AND APPLICATION..........................................................................3
3. AHU CONSTRUCTION.......................................................................................................................5
4. OPERATION PRINCIPLE ...................................................................................................................5
4.1 THERMAL BALANCE .........................................................................................................................5
4.2 OPERATION OF CROSS-FLOW EXCHANGER................................................................................6
4.3 OPERATION OF THE HEAT PUMP...................................................................................................7
4.3.1 DESCRIPTION OF THE COOLING DEVICE .....................................................................................7
4.3.2 OPERATION OF COOLING DEVICE .................................................................................................7
4.3.3 OPERATION OF THE HEAT PUMP AT LOW EXTERNAL TEMPERATURES.................................8
5. CONTROL SYSTEM...........................................................................................................................8
5.1 DIAGRAM OF THE CONTROL SYSTEM...........................................................................................8
5.2 CONTROL OF STANDARD EQUIPMENT .........................................................................................9
5.2.1 TURNING ON THE AHU.....................................................................................................................9
5.2.2 DELAYED COOLING SYSTEM PROTECTION .................................................................................9
5.2.3 COOLING SYSTEM PROTECTION ...................................................................................................9
5.2.4 AIR PARAMETER ADJUSTMENT......................................................................................................9
5.2.5 FILTER PRESSURE GAUGES...........................................................................................................9
5.2.6 DEFROSTING THE CROSS-FLOW EXCHANGER...........................................................................9
5.2.7 FAN OPERATION ADJUSTMENT SIGNALS.....................................................................................9
5.3 CONTROL OF OPTIONAL EQUIPMENT...........................................................................................9
5.3.1 DAMPERS...........................................................................................................................................9
5.3.2 PRELIMINARY HEATER ....................................................................................................................9
6. COMMISSIONING ............................................................................................................................10
7. SCOPE OF THE DELIVERY.............................................................................................................10
8. TRANSPORT AND STORAGE.........................................................................................................10
9. AHU ASSEMBLY...............................................................................................................................10
9.1 SUSPENDING THE AHU..................................................................................................................10
9.2 DRAINING CONDENSATE...............................................................................................................11
9.3 ELECTRICAL CONNECTION...........................................................................................................11
10. FEATURED OPTIONAL EQUIPMENT .............................................................................................11
10.1 NGS – PRELIMINARY WATER HEATER ........................................................................................11
10.2 NGS – PRELIMINARY ELECTRICAL HEATER ...............................................................................12
11. FIRST START-UP.............................................................................................................................12
12. OPERATION AND MAINTENANCE .................................................................................................13
13. FAULTY AHU OPERATION..............................................................................................................13
14. H&S PRECAUTIONS ........................................................................................................................13
15. SERVICE INFO .................................................................................................................................13
16. COMMISSIONING PROTOCOL .......................................................................................................14

KLIMOR

OPERATION AND MAINTENANCE MANUAL DTR HPX.08 v.8
PAGE
GDYNIA COMPACT AHU MCKT-HPX 2014 3/14
KLIMOR S.A, 81-035 Gdynia, ul. B. Krzywoustego 5
Fax: [phone]; Tel.: [phone]
Service – Fax: [phone]; Tel.: [phone] Mobile: [phone]
Information in this document is subject to change
email: [e-mail] – Office
[e-mail] – Service
1. GENERAL INFORMATION
The purpose of this OMM manual is to made the installers and users aware of the construction as well as correct
operation and maintenance of the MCKT-HPX Air Handling Unit. Before the device installation as well as before
launching and operating the device you should carefully read this OMM and strictly follow all instructions herein.
Failing to observe the guidelines and recommendations
contained in the operation and maintenance
manual exempts the manufacturer
from any warranty-related obligations.
KLIMOR reserves the rights to implement design and material changes without prior notice, in relation to
modernization and improvement of the product.
2. TECHNICAL SPECIFICATION AND APPLICATION
Compact MCKT-HPX AHU is an air supply-exhaust unit designed for ventilation with heat recovery in any rooms
such as: shops, restaurants, offices, production halls, residential buildings, houses, etc. The AHU is located inside
the building. It is powered with electric energy. The heat pump enables to cool down the air in summer and heat it up
in winter. AHU's operating position – suspended.
The unit is not designed to operate in environments with air temperature exceeding 45°C and relative humid-
ity over 60% as well as in environments endangered by explosion of flammable gases and vapors containing
organic solvents or other aggressive substances.
L
W
H
B
A
Okno inspekcyjne
Rozdzielnica RZS
MCKT-HPX
Uchwyt zawiesia
1
1
2
2
3
3
4
4
W+200
Picture no. 1 Compact MCKT-HPX AHU (main picture, top view)
STANDARD AIR FLOW
1– Inlet of external air
2– Outlet of supply air
3– Inlet of exhaust air
4– Discharge of extracted air
NON-STANDARD (i.e. LEFT-SIDE) AIR FLOW
3– Inlet of external air
4– Outlet of supply air
1– Inlet of exhaust air
2– Discharge of extracted air

KLIMOR
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OPERATION AND MAINTENANCE MANUAL DTR HPX.08 v.8
PAGE
GDYNIA COMPACT AHU MCKT-HPX 2014 4/14
KLIMOR S.A, 81-035 Gdynia, ul. B. Krzywoustego 5
Fax: [phone]; Tel.: [phone]
Service – Fax: [phone]; Tel.: [phone] Mobile: [phone]
Information in this document is subject to change
email: [e-mail] – Office
[e-mail] – Service
Table no. 1 Technical parameters, part 1
MCKT–HPX 1 MCKT–HPX 2 MCKT–HPX 3
Length L
[mm]
1342 1742 1892
Width W
[mm]
1042 1312 1468
Hight H
[mm]
452 552 602
Ventilation port A x B
[mm]
333 × 352 467 × 452 545 × 502
Connector size A x B
[mm]
390 × 350 465 × 450 560 × 500
Weight
kg
137 225 295
Air filters
Type
FS-100 250x350 G4 FS-100 450x450 G4 FS-100 550x500 G4
*For the unit equipped with the control system the “W” dimension is enlarged by 250mm.
Table no. 2 Technical parameters, part 2
MCKT–HPX 1 MCKT–HPX 2 MCKT–HPX 3
Range of airflow rate
m3/h
700 1000 1500 2100 2300 3200
Heating
1
kW
8.6 10.3 16.8 21.1 26.3 31.0
Cooling
2
kW
5.0 6.2 9.6 15.5 17.0 20.2
Fan power output
kW
2×0.5 2×0.5 2×1.1
Fan voltage
Ph/V/Hz
1×230V/50 1×230V/50 3×230/50
Fan current
A
2×2.2 2×2.2 2×2.23
Compressor power con-
sumption (winter)
kW
1.5 1.6 3.0 3.2 4.3 4.9
Compressor power con-
sumption (summer)
kW
1.8 1.9 3.3 3.4 4.7 5.6
Compressor voltage
Ph/V/Hz
1x230V/50 3×400/50 3×400/50
Max compressor current
3
A
14.0 10.4 15.8
Cooling medium
R407C R407C R407C
Amount of cooling medium
kg
2.0 3.0 4.5
Sound power level for suc-
tion/pressing duct
dB(A)
55/60 63/68 62/67 71/76 69/75 76/81
Level of acoustic pressure at 1m
from the casing for A=15m
2
dB(A)
44 52 51 60 58 65
1- For parameters: external temperature -5°C; φ=80%, room temperature 20°C; φ=50%
2- For parameters: external temperature 32°C; φ=50%, room temperature 24°C; φ=50%
3- Max nominal compressor engine current.
Table no. 3 Dedicated optional equipment
MCKT–HPX 1 MCKT–HPX 2 MCKT–HPX 3
Size Max output Size Max output Size Max output
NGS water heater NGS-250 10kW NGS-400 23kW NGS-500 55kW
Electrical heater NGE NGE-1 4.5kW NGE-2 9kW NGE-3 13.5kW
Multi-surface damper
A.DPR 390×350 A.DPR 465×450 A.DPR 560x500
Flexible connection FC 390×350 FC 465×450 FC 560x500
Detailed data are listed in the chapter related to the optional equipment.
Chart no. 1 MCKT-HPX available pressure

KLIMOR
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OPERATION AND MAINTENANCE MANUAL DTR HPX.08 v.8
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KLIMOR S.A, 81-035 Gdynia, ul. B. Krzywoustego 5
Fax: [phone]; Tel.: [phone]
Service – Fax: [phone]; Tel.: [phone] Mobile: [phone]
Information in this document is subject to change
email: [e-mail] – Office
[e-mail] – Service
3. AHU CONSTRUCTION
- The MCKT-HPX AHU's casing is made of framework casing made of anodized aluminum profiles and plastic cor-
ners, and galvanized steel sheet and non-flammable mineral wool which provides appropriate thermal and acoustic
insulation. The casing panels are 50 mm thick.
Inspection panels are equipped with handles
and are mounted to the framework with one-
and two-side clamps
The AHU's framework is equipped with han-
dles enabling suspension of the unit to ceiling
with bars.
Picture no. 2 Inspection panels
AHU's side masking covers can be arranged in
different ways, enabling 16 combinations of ventila-
tion port arrangements.
Picture no. 3 Side covers masking the ventilation ports
- MCKT-HPX AHU internal equipment: two G4-class cartridge filters, plate cross-flow heat exchanger, two axial-
radial fans with direct drive and complete sets of heat pump: air-air with cooling system and two CuAl exchangers.
The heat pump enables cooling of supply air in summer and heating it in winter.
In the lower part of the inspection plate there are connections (hose connectors) for draining condensate water from
the cross-flow heat exchanger and cooler outside the AHU.
- The MCKT-HPX AHU is equipped with complete system of power supply and control system. The RZS box is at-
tached to the AHU side wall. The AHU is directly controlled by the control panel. Information regarding operating the
unit are attached.
4. OPERATION PRINCIPLE
The MCKT-HPX AHU can operate only with the cross-flow exchanger or with the cross-flow exchanger and heat
pump.
The most beneficial external air temperate enabling the highest heat pump efficiency for cooling is above -5°C. In
case of lower temperatures the control system switches off the cooling system and the unit operates in heat recovery
mode only with the cross-flow exchanger. To ensure proper operation of the heat pump, in order to heat up air to
required temperature, it is necessary to use preliminary NGS water heaters or NGE electrical heaters which heat up
external air up to -5°C.
4.1 THERMAL BALANCE
Compact MCKT-HPX AHU equipped with the cross-flow heat exchanger and heat pump forms a high-performance
heat recovery system for a ventilated room. However ventilated rooms have to be source of heat in order to enable
heat recovery. That is why at the stage of designing heating and ventilation system it is necessary to carry out the
room's thermal balance – a balance of profit and loss. Ventilated rooms should be equipped with independent heat-
ing provided by radiators, floor heating or other heating method, while the MCKT-HPX AHU should only take care of
heating up the supply air.

KLIMOR
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OPERATION AND MAINTENANCE MANUAL DTR HPX.08 v.8
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KLIMOR S.A, 81-035 Gdynia, ul. B. Krzywoustego 5
Fax: [phone]; Tel.: [phone]
Service – Fax: [phone]; Tel.: [phone] Mobile: [phone]
Information in this document is subject to change
email: [e-mail] – Office
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4.2 OPERATION OF CROSS-FLOW EXCHANGER
Calculating heat amount to heat up the air is provided using the records below.
Table no. 4 Sample operation spots at max air flow rate and min exchange efficiency while the heat pump is not operating.
t1
[
o
C]
t2
[
o
C]
φ2
[%]
η
[%]
Q
[kW]
Tlz
[
o
C]
t12
[
o
C]
Designation
t1 – external air temperature
t2 – room air temperature
φ2 - room air humidity
η- t12 heat exchange efficiency – air temperature after the
exchange
Q - thermal power recovered
Tlz - freezing limit temperature
t12 - air temperature after the exchange
-16 22 40 51 6.0 -12 3
-12 22 40 50 5.1 -12 5
-7 22 40 48 4.2 -12 7
-5 22 40 48 3.8 -12 8
-3 22 40 47 3.5 -12 9
-1 22 45 48 3.2 -12 10
Temperature value downstream the cross-flow exchanger is determined using the diagram in picture no. 4
20°C
30°C
10°C
10°C
20°C
30°C
0°C
0°C
-10°C
20°C
10°C
-20°C
Dla sprawności w ymiany η = 60%.
Przykład:
tem p. powietrza zewnętrznego t1 = -8°C
tem p. powietrza wewnętrznego t2 = +22°C
przy zakładanej sprawności h =6 0% ,
tem peratura powietrza po w ymianie
wynosi:
t12 = h / 100 x (t2 - t1) + t1
t12 = +10°C
Jak widaćstosując HPX, powietrze po
wymianie należy podgrzaćo 12°C, podczas
gdy bez wymiennika ażo 30°C.
Picture no. 4 Determining temperature at the cross-flow exchanger
Characteristics of plate heat exchangers used in the MCKT-HPX AHU
- The exchangers are characterized by high heat recovery efficiency at low investment costs.
- The exchangers do not have any moving parts so they do not wear out and they are always ready to work.
- Flowing air streams do not mix with each other and they do not carry over any contaminants.
- The exchangers do not require electrical power supply.
- The heat exchangers are lightweight, compact and are easy to assemble.
- The exchangers are produced using the top level global standards.
Problems with freezing condensate in the exchanger and countermeasures
If warm air stream gets significantly cooled down, beside condensation freezing may also occur. In practice it does
not happen so commonly – several conditions must be met at the same time:
- very low external air temperature
- higher air flow of cool air than warm air
- high efficiency of the exchanger
- relatively low level of condensation
- problems with draining out condensate
- high humidity of extracted air
If several of these conditions occur at the same time, the exchanger may start covering with frost, starting from the
cold corner.
Standard anti-freeze countermeasure for the exchanger in the MCKT-HPX AHU is temporary limiting flow of
the air supply fan.

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KLIMOR S.A, 81-035 Gdynia, ul. B. Krzywoustego 5
Fax: [phone]; Tel.: [phone]
Service – Fax: [phone]; Tel.: [phone] Mobile: [phone]
Information in this document is subject to change
email: [e-mail] – Office
[e-mail] – Service
4.3 OPERATION OF THE HEAT PUMP
The heat pump, depending on needs, enables cooling down or heating up external air. Treated air has to be chemi-
cally inert, cannot contain caustic or explosive components as well as oily, viscous and fibrous slurries. The R407C
Freon is used as the cooling medium.
Correct operation of the cooling system requires sufficient amount and appropriate parameters of supplied air. The
technical parameters table in the „Air flow range” line lists min air flow efficiency depending on the unit size.
All data refer to summer period (cooling mode operation) and air extracted from a room at 24°C because these are
the least favorable operating conditions. Setting lower air flow of the AHU will lead to turning off the cooling system
by low or high pressure gauges.
4.3.1 Description of the cooling device
The cooling sets are enclosed inside the AHU. The compressors are protected using high and low pressure gauges
with automatic reset function. Triggering high pressure gauge requires reset to be carried out at the hand-held con-
trol unit.
The cooling system is delivered together with the control system. It provides full protection during AHU operation,
maintaining required air parameters and its maximizing output. In order to protect the compressor against flooding
with the liquid medium, the system operates with removing by suction the medium vapor once turned off (the sole-
noid valve is closed before turning off the compressor). Removing the medium by suction is done at each system
deactivation. Due to operation in heating and cooling modes at variable air parameters, the systems have got wide
ranges of permissible operating pressure.
Filling the system with Freon R407C should be carried out with the compressor operating, till the eyehole is filled
with the medium.
1. Compressor
2. Low pressure gauges
3. High pressure gauges
4. Four-way valve
5. DX reservoir
6. DX fill-up valve
7. Filter – dehydrator
8. Solenoid valve
9. Eyehole
10. Expansion valve
11. Check valve at the medium line
Figure no. 5 Cooling system diagram
Table no. 5 Range of manometric pressures for heat pump operation
Min
[MPa]
Max
[MPa]
Pressure gauge setting
Pabs [bar]
Low pressure 0.2 0.65 4
High pressure 1.1 2.5 28
4.3.2 Operation of cooling device
The cooling unit is an autonomous system fully controlled and supervised by control system. For that reason it does
not require outside interference. All works should be done by personnel having appropriate certificated qualifications.
However the personnel can reduce potential failures by following the unit’s operation carefully.
NOTE!
The compressor requires appropriate operating parameters of the cooling oil. That is why before the first start and
after each longer downtime of the whole AHU (when the switchboard is not energized) it is necessary to turn on the
switchboard and do not enable to start the cooling system. It will initiate starting the compressor casing heater and
heating up the oil. Appropriate time to ensure correct oil parameters is 3h.
The basic parameter that should be taken into account is the amount and parameters of air flowing through the cool-
ing system exchangers. The flow adjustment should ensure min air amount listed in the table no. 2 with MCKT-HPX
AHU parameters. The condition of air filters should be monitored. Contamination of air filters causes considerable
drops in airflow rate.
Monitoring the cooling system may be limited to checking pressure ranges when the system is in operation. The user
has to carry out a visual inspection of the cooling system condition. Oily spots on the pipeline can indicate leakage of
the medium from the system. They should be wiped dry. If oil appear in the same spots, there is a leakage.

KLIMOR
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OPERATION AND MAINTENANCE MANUAL DTR HPX.08 v.8
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GDYNIA COMPACT AHU MCKT-HPX 2014 8/14
KLIMOR S.A, 81-035 Gdynia, ul. B. Krzywoustego 5
Fax: [phone]; Tel.: [phone]
Service – Fax: [phone]; Tel.: [phone] Mobile: [phone]
Information in this document is subject to change
email: [e-mail] – Office
[e-mail] – Service
NOTE!
Visual inspection of the cooling system should be carried out when the compressor and fans are turned off. Temper-
ature of the pipeline directly downstream the compressor during operation can exceed 100°C. Pay particular atten-
tion while inspecting the cooling system.
4.3.3 Operation of the heat pump at low external temperatures
At low temperatures of external air there is a drop of the heat pump efficiency. In order to prevent such situation it is
recommended to use the preliminary heater with output dependent on the air flow and estimated temperature of
external air. The preliminary heater ensures heating up the external air to the level enabling efficient operation of the
heat pump.
Depending on parameter relations between air supply and air exhaust streams, such as temperature, humidity, vol-
ume, the critical point temperature usually is about: -5°C.
The heater output should be calculated for the most extreme operating conditions.
For preliminary heating up the supply air you can use the NGE electrical heater or the NGS water heater.
The heaters are optional equipment of the MCKT-HPX AHU.
5. CONTROL SYSTEM
Detailed description of the MCKT-HPX AHU's control system is provided in a separate attachment to the OMM („Us-
er’s manual of the suspended MCKT-HPX AHU’s automatic system controller”).
5.1 DIAGRAM OF THE CONTROL SYSTEM
Picture no. 6 Diagram of the control system for the MCKT-HPX

KLIMOR
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OPERATION AND MAINTENANCE MANUAL DTR HPX.08 v.8
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KLIMOR S.A, 81-035 Gdynia, ul. B. Krzywoustego 5
Fax: [phone]; Tel.: [phone]
Service – Fax: [phone]; Tel.: [phone] Mobile: [phone]
Information in this document is subject to change
email: [e-mail] – Office
[e-mail] – Service
5.2 CONTROL OF STANDARD EQUIPMENT
5.2.1 Turning on the AHU
Turning on the system from the control panel. Common start of fans 20s after turning on the system. 30
seconds after starting the fans permit to start the cooling system. Once the system is turned off the fans
keep operating for 30 seconds.
5.2.2 Delayed cooling system protection
Once the compressor (3) is turned off, it can be turned on again only after 180 seconds.
5.2.3 Cooling system protection
The cooling system is equipped with low pressure (4) and high pressure gauges with automatic reset func-
tion. If any of the pressure gauges is triggered, the cooling system is stopped. If the high pressure gauge
(5) is activated 3 times within an hour, the cooling system is blocked and requires restarting from the control
panel.
5.2.4 Air parameter adjustment
Room temperature adjustment is carried out based on the air exhaust temperature sensor (11). The air
supply sensor (10) enables reduction of min/max air supply temperature. Max air supply temperature at
40÷21°C. Min air supply temperature at 5÷24°C. Min allowable difference between max and min air supply
temperature is 16K.
5.2.5 Filter pressure gauges
Filters of pressure gauges indicate filter contamination with a summary signal.
5.2.6 Defrosting the cross-flow exchanger
If the sensor (12) detects temperature 0°C, the air supply fan reduces its output to 20% for 120 seconds.
5.2.7 Fan operation adjustment signals
Fan operation adjustment signals are independent for air supply and air exhaust. Fans controlled with sig-
nal (13 and 8) 0-100% output. Fan start from the signal (9 and 14). The cooling system can operate for the
control range of 40...100%. Below this setting at the air supply or exhaust operation of the heat pump is not
allowed.
5.3 CONTROL OF OPTIONAL EQUIPMENT
5.3.1 Dampers
Both dampers (20 and 21) 24V AC/DC-powered open when the AHU is started. The air supply damper with
a spring, the air exhaust damper without a spring.
5.3.2 Preliminary heater
The preliminary heater (optionally, water or electrical one) ensures initial air heating to enable operation of
the heat pump at external temperature below -5°C. The temperature measured at the temperature sensor
(1) set from the panel in the –5°C÷10°C range.
Water heater
Power supply and control (15) of the circulating pump (3A fuse; 1×230V) of the heater and power supply
and control (16) of the three-way valve (0÷10V signal, 24V AC/DC). The temperature sensor (17) as an anti-
freeze protection located at the heater's water return. If the temperature (17) drops below 15°C, it will
cause: turning off the cooling system, turning off both fans and closing the damper. The heater pump is op-
erating, the three-way valve is adjusted to max heating.
Electrical heater
Power supply and control with a separate module controlled by signal (18) from the main switchboard. The
heater protection (19), once temperature exceeds 90°C, turning off the heater, while other AHU devices are
operating.

KLIMOR
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KLIMOR S.A, 81-035 Gdynia, ul. B. Krzywoustego 5
Fax: [phone]; Tel.: [phone]
Service – Fax: [phone]; Tel.: [phone] Mobile: [phone]
Information in this document is subject to change
email: [e-mail] – Office
[e-mail] – Service
6. COMMISSIONING
Compact MCKT-HPX AHU in fully assembled condition are subject to the manufacturer's quality control commission-
ing, which guarantees meeting quality requirements and parameters defined in the unit's data sheet.
7. SCOPE OF THE DELIVERY
The delivery includes, standard equipment:
- Compact MCKT-HPX AHU, fully assembled with enclosed control system.
- The remote control panel and duct sensors – supplied in a separate package (a shielded control cable,
4x0,5mm
2
is not provided)
- Operation and Maintenance Manual (OMM)
- The system control documentation ("User’s manual of the suspended MCKT-HPX AHU’s automatic system
controller").
Additional equipment (on individual request):
- Air damper and flexible connectors
- NGS water heater
- NGE electrical heater
8. TRANSPORT AND STORAGE
The MCKT-HPX AHU is delivered fully assembled to the final place of operation.
Loading onto/unloading from a means of transport to a warehouse can be carried out manually or with a lift.
The units should be stored in enclosed, roofed places.
The AHU should be stored, transported and operated in horizontal position with the inspection panels facing
downward.
9. AHU ASSEMBLY
9.1 SUSPENDING THE AHU
The compact MCKT-HPX AHU should be installed in rooms which do not contain any airborne chemical contami-
nants reacting with non-ferrous metals.
The AHU can be suspended using four side holder located at both sides of the casing.
A M8 threaded bar is inserted into the lower part of the holder and a nut with a washer is screwed on. Next, the bar is
inserted into the groove of the upper part of the holder, and at the same time they are joined together by pushing a
lower element into an element at the bottom.
Usage of M8 threaded bars enables easy and quick suspension and leveling of the unit.
The M8 threaded bars are not supplied.
The minimum retained distance of the upper surface of the unit to the partition should be min 20mm.
The AHU should be leveled and the final assembly should enable inclining the unit towards the air flow at 1°
(about 1,5÷2%).
Picture no. 7 Optimal inclination of the AHU
The unit should be assembled and connected using cables to ensure appropriate air flow.
The air system should be connected using flexible connectors.