OPERATION AND MAINTENANCE MANUAL
DTR MCK v.2.4
PAGE
GDYNIA
MODULAR AIR HANDLING UNITS
MCKS, MCKH, MCKP
2017 EN
39/45
KLIMOR Spółka z ograniczon
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Sp.k., 81-035 Gdynia, ul. B. Krzywoustego 5
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Fax: (+48 58) 783-98-88; Tel.: (+48 58) 783-99-50/51 Mobile: (+48) 510 098 081
Information in this document is subject to change
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office
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service
e)
The supply for DX coolers is allowed only when air flows through the device.
Opening supply of the cooling medium to the cooler with no heating load can lead to the compressor dam-
age.
f)
In case of floor AHUs with dampers in external version it is necessary to apply actuators with higher protection
class, at least IP54.
g)
The AHU control system should enable turning off the device when the local fire protection system is triggered.
10. MCK AHUS IN EXTERNAL VERSION
The MCK AHUs can be adapted to operation in external conditions.
Below you can find the specification of differences between the AHU in roof version and standard version:
A. Casing
All gaps between fixed panels, such as covers, and the aluminum framework are filled with sealing silicone.
B. Air intake/air exhaust
Air intake/air exhaust are constructed as a ventilation profile with mesh and guides. Its role is to protect the air in-
let/outlet against rain, wind and particles larger than 10×10 mm. It is screwed to the damper or AHU's profiles. As-
sembly on the front or other wall (np. side wall) once the AHU is equipped with an empty section. It is possible to in-
stall additional elbows or sections.
C. Dampers
Cut off dampers are installed outside the AHU. Such placement is possible thanks to hiding the drive blades in a
double aluminum profile. The damper actuators are covered with a membrane but it is necessary to use actuators
characterized by higher protection level, at least IP54.
D. Exchangers
Water exchangers (heaters) are equipped with anti-frost protection as the anti-frost thermostat (available only with the
provided complete control system). Connectors of the heaters manifolds can be located inside the AHU to enable in-
stallation of supply and return pipelines, through the ceiling in a space between the AHU frame or inside. It is also
possible to install the exchanger's control node in an additional section.
E. Roofing
Each set is equipped with a roofing made of galvanized or coated sheet fixed to the AHU frame profile.
The roofing elements set is provided at a separate pallet.
The roofing assembly is carried out once the AHU is located in the destination.
F. Automation control system
The control system provided is available in external or internal
version.
The external control system switchboard with IP65 rating is
equipped with the heater and thermostat.
Inverters to be installed inside the AHU in the fan section
See the AHU control system OMM to find more info.
Figure No. 42
Preferred installation location of the inverter in the fan block
