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www.klimor.com
www.klimor.com
MCKT - SUSPENDED MODULAR AIR CONDITIONING AND VENTILATION UNITS
OPERATION AND MAINTENANCE MANUAL
Modular Unit
– is made up of a minimum of two sec-
tions, where one of them is fitted with a fan, while the
remaining ones carry out any process of air treatment.
Several casings interconnected into systems: intake, out-
let and intake-outlet systems with heat recovery.
2.4 Airflow Rate Ranges
The units with functional modules operate within the
following performance ranges (the criterion is the use
of the cooling function):
Table No. 3
Air Performances
AIRFLOW RATE RANGES
SIZE
COOLER
PERFORMANCE RANGE
MCKT 01
Without cooler
500 ÷ 2 000 m
3
/h
MCKT 01
With cooler
500 ÷ 1 400 m
3
/h
MCKT 02
Without cooler
1 000 ÷ 3 500 m
3
/h
MCKT 02
With cooler
1 000 ÷ 2 600 m
3
/h
MCKT 03
T 03
Without cooler
1 200 ÷ 5 200 m
3
/h
MCKT 03
With cooler
1 200 ÷ 4 200 m
3
/h
3. Construction of MCKT
3.1 Compact Units
Compact units are made of self-supporting blocks. Cas-
ings with a wall thickness of 25mm are made of two
(outer and inner) U-shaped galvanised metal sheet
plates 0.8mm in thickness. The space between the
casing plates is filled with an insulating plate made of
mineral wool. At the bottom the casing is closed with
an inspection panel allowing unrestrained access to
subassemblies of the functional fittings.
Each block is fitted with four handles both for suspend-
ing the unit as well as possibly adding another block.
Air processing functions carried out by the unit are la-
belled with graphic symbols placed on the inspection
panel.
The unit is fitted with an aluminium multi-surface
adjustment and shutoff air damper and elastic con-
nections at the inlet and outlet. Airflow is forced by
a centrifugal fan powered directly by a three-phase
motor with a rated voltage of 3x230/400V/50Hz con-
trolled by an inverter (in MCKT01; 02; 03), or by a cen-
trifugal fan with a built-in EC motor controlled by direct
current 0÷10V (in MCKT01; 02; 03).
MCKT with an electric heater is fitted with a thermostat
protecting the heating elements against overheating.
MCKT with a water heater is fitted with an antifreeze
thermostat.
3.2 Modular Units
Modular unit blocks are made in the same technology
as compact unit blocks described above.
Depending on the type of air processing, the MCKT unit
is made up of discrete functional sections. Each section
is labelled with graphic symbols placed on the inspec-
tion panels. The unit blocks are adapted to air process-
ing in the following modules:
• preliminary filtration (sectional filter G4/M5 FS50) and
secondary filtration (bag filter class M5, F7 or F9)
• heating (water and electric heater)
• cooling (water and DX cooling coil)
• silencers
• ventilation
• counter-current cross-flow exchanger
• heat pump.
Note: The mixing chamber function is performed by
supplied air dampers mounted on the channels (two
dismounted from the unit and one additionally pur-
chased)
Each block in the intake and outlet systems is fitted
with a set of four handles for suspending the unit
and connecting it with another block. Any block can
be connected with a cross-flow exchanger and heat
pump block by means of triangles and stiffening poles
located inside the blocks that are bolted together
with 4xM6 bolts for each system. Blocks having their
sidewalls in contact are connected with a 4xM6 con-
necting set. Connecting elements are supplied in a
separate packaging.
3.3 Left- and Right-hand Side
MCKT suspended units are manufactured as left- and
right-hand sided. The side version is defined with re-
gard to the location of the exchanger joints in relation
to airflow return.
LEFT-HAND SIDED VERSION
RIGHT-HAND SIDED VERSION
DRAWING 01:
Side versions. The arrow represents the airflow direction.
4. Construction and Operation of MCKT-HPM
In this chapter we will present information regarding
the construction and operation rules of the MCKT-HPM
heat pump module.
4.1 MCKT-HPM Configurations
The heat pump module in the MCKT unit allows heat-
ing and cooling of air taken into ventilated premises. It
cooperates with the counter-current exchanger block
and the reheating water or electrical heater.
DRAWING 02:
Basic configuration of MCKT-HPM
MCKT-HPM units may be upgraded with an electric
preheater, reheater, water or DX cooling coil, noise
silencers and a secondary filter.
DRAWING 03:
Extended configuration of MCKT-HPM
Preheaters and reheaters may not co-occur in the same
unit. The preheater is not part of the delivery.
NOTICE!
If a water preheater is used, glycol is required as the
heating medium with a concentration allowing opera-
tion in minimum temperatures of outdoor air.
4.2 Heat Pump Operation Parameters
HPM heat pump module in MCKT unit
Table No. 4
MCKT-HPM Technical Data
PARAMETER
UNIT
MCKT01-HPM
MCKT02-HPM
Minimum airflow rate*
m
3
/h
700
1700
Maximum airflow rate*
m
3
/h
1700
2700
Minimum temperature of
outlet air
oC
20
20
Q0 - summer, Vmax/Vmin
kW
8,1/3,7
17,6/10,1
Ne - summer, Vmax/Vmin
kW
2,65/1,2
5,3/3,0
Qk – winter, Vmax/Vmin
kW
9,9/4,5
20/11,5
Ne - winter, Vmax/Vmin
kW
2,3/1,0
4,4/2,6
Cooling medium
-
R407C
R407C
Quantity of cooling medium
kg
2,5
4,5
Maximum operating current
A
7,2
14,2
Block length
mm
1000
800
Weight
kg
140
120
* The ratio of intake air to outlet air has to be within the
range of 0.5 – 1.4.
Data for the following parameters:
Summer 30ºC/45%; Winter -20ºC/100%
Designations from Table No. 4:
Q0 - summer, Vmax/Vmin – cooling performance in maximum/minimum
amount of air
Ne - summer, Vmax/Vmin – compressor electric power in maximum/min-
imum amount of air
Qk – winter, Vmax/Vmin – heating performance in maximum/minimum
amount of air
Ne - winter, Vmax/Vmin – compressor electric power in maximum/mini-
mum amount of air
The cooling system in HPM works all year round. It
should be remembered, however, that the defrost pro-
cess of the cross-flow exchanger could activate itself,
thus switching off the heat pump for that time.
4.3 Construction of MCKT-HPM module
DRAWING 04:
Heat pump system diagram
1. Compressor
2. Four-way valve
3. Exchanger
4. Expansion valve
5. Ball valve
6. Place for feeding cooling medium
7. Filter – dehydrator
8. Solenoid valve
9. Freon eyehole
10. Check valves
11. Low pressure transducer
12. High pressure transducer
13. Thermostat protecting against excessive increase of pumping
temperature.
4.4 Cooling System Operation
The heat pump compressor is smoothly controlled
with a frequency converter. This allows adapting cool-
ing power to current needs and reducing electrical
power consumption to the minimum. The unit is fitted
with high and low pressure transducers. They supply
the direct pressure values to the automation module,
thus the operating algorithm may reduce cooling per-
formance preventing pressure increase or decrease in
excess of specified limits.
In order to protect the compressor, the control algo-
rithm controls reduction of the unit’s start-ups per hour
and its minimum operating time.
The compressor is also protected against flooding by
the fluid medium, by cyclical sucking off fumes from
the cooler at each switch-off of the system.
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