OPERATION AND MAINTENANCE MANUAL
DTR MCK v.2.4
PAGE
GDYNIA
MODULAR AIR HANDLING UNITS
MCKS, MCKH, MCKP
2017 EN
7/45
KLIMOR Spółka z ograniczon
ą
odpowiedzialno
ś
ci
ą
Sp.k., 81-035 Gdynia, ul. B. Krzywoustego 5
Fax: (+48 58) 783-98-88; Tel.: (+48 58) 783-99-99
Service -
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
email:
-
office
-
service
2.3.2 Functional sets
Depending on the functional requirements related to the air handling process the AHUs are equipped with the follow-
ing batch sets:
2.3.2.1 PF filtering block and MX mixing (recirculation)
In the PF preliminary filtering block the G2
÷
M5 grade cartridge filter or G4 and M5 bag filter is installed.
A task of this block is to clean and mix an air (in case of the recirculation).
The G2-class filters are metal filters for preliminary removing oily slurries from air.
The G2
÷
M5-class cartridge filter assembly method enables its easy replacement or regeneration.
In order to disassemble the filter remove the cover or open the door and slide out the filter from the guide.
A new cartridge filter should have a self-adhesive sealing attached.
Bag filters are attached in guides and pushed against the sealing with a flat bar with an eccentric joint. Bag filter re-
placement procedure is shown in the Fig. No 36. While replacing the filter it is also recommended to replace the
guide sealing.
Dimensions of applied filters are listed in the KT certificate and in the rating plates.
The MX mixing sets are used in air supply AHUs. These sections are equipped with two dampers.
The MX recirculation sets are used in air supply/exhaust AHUs. These sections are equipped with a recirculation
damper and optional cut-off damper.
In the PR cross-flow heat exchanger section the PR recirculation damper is installed directly at the heat exchanger
bypass channel and it does not require application of an additional chamber.
Under the MX block there is located a drip tray with a connector to drain off the condensate, led to the operational
side. In case of the AHU size 11 there is also provided another connector leading to the opposite side.
Drain traps are also provided and please make sure to install them in accordance with the guidelines listed in the
point 6.2.5
All AHU rectangular inlets and outlets are equipped with flexible connectors. They are screwed in to a damper or
AHU's covers. Size of flexible connectors and rectangular connectors for individual AHUs according to the Chapter
2.2.4.
The flexible joints are protected for transport using sheet strips. The flexible joint is equipped with yellow-green
ground lead, which should not be removed and it should be connected to the duct system.
Factory protecting elements of the filters should be removed once the AHU is positioned in the dedicated
operating location.
2.3.2.2 WH, EH and MG heating block
The task of this block is to heat up the air up to the temperature required according to the design data. This task is
accomplished using a water, electrical or gas heater.
Water heaters
Standard water heater consists of a galvanized steel sheet casing and CuAl package with copper pipes and alumi-
num fins. Manifolds and connectors are made of copper or steel.
The heat exchanger is equipped with plugs: drain plug and venting plug. During assembly of hydraulic system it is
recommended to install drain and vent valves at the pipes leading to the heat exchanger.
When connecting heater to the supplying system it is necessary to consider recommendations listed in the section 6.
Procedure of the heat exchanger disassembly:
-
Once the medium supply and return line is cut off re-
move the heat exchanger panel on the operation side.
-
When you remove fixing blots of the heat exchanger at
the operation side, slide out the heat exchanger from
the guides.
This method of the heat exchanger assembly enables their
free disassembly even if an access to the AHU is possible
just from one side. And the cover, if it is located on the back
AHU side, enables inspection without removing the heat ex-
changer.
Vertical heat exchanger components touching the AHU cov-
er are equipped with a self-adhesive sealing.
Installation of the thermostat should be carried out with the
heat exchanger removed, before connecting the hydraulic
system of heating water.
Figure No. 3
Assembly of the heat exchanger in a block
1 - heat exchanger
2 - ribs of heat exchanger
3 - guide
4 - AL rib
5 - service side panel
6 - self-tapping screw 4.8x16
7 - gasket