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EN
UAB AMALVA we reserve the right to make changes without prior notice.
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The pipe work should be done in order to ensure the space for maintenance and service work. When carrying out
the installation of heater pipes, make sure that hot water supply is completely disconnected. Before start-up of
the air handling unit, the heater system should be filled in with water. Glycol is used in the air handling units with
coil heat exchanger. Never pour glycol down a drain; collect it in a receptacle and leave it at a recycling centre or
the like. Glycol is highly dangerous to consume and can cause fatal poisoning or damage the kidneys. Contact a
doctor! Avoid breathing glycol vapour in confined spaces. If you get glycol in your eyes, fush them thoroughly with
water (for about 5 minutes).
*If water heater build in.
When operating air handling unit in the temperatures lower than 0 °C, it is
necessary to use glycol additionally or assure the reversible heating agent
temperature more than 25 °C.
It is important to maintain air heaters and coolers cleanliness; that is to
change filters installed in the air handling unit on time. If the air heater or
cooler gets dirty, to perform periodical cleaning.
Ductwork
The air flows in/out air handling unit through ductwork. We recommend using galvanized steel (Zn 275 gr/m
2
)
ductwork, to ensure easy cleaning and durability. It is necessary to use the ductwork system with low air flow rate
and small pressure drop to have necessary air volume and low sound level and save the energy. The appropriate
sound attenuators will reduce the noise level of the fans in the premises.
All ductwork should be insulated with 50–100 mm thickness insulation to avoid the condensation.
Note:
temperature sensor B1 has to be mounted in the supply air duct under electric heater (see the functional diagram
in Control System Electrical Installation and Operation Manual). It is necessary to leave space in straight air duct for
sensor mounting and guarantee the space for maintenance and service work. Minimal space between the unit and B1
sensor is the space of double air duct diameter.
Ductwork, steelwork and any other services should not be supported off the
unit.
In duct system, for units with electric air heater, use air closing damper with-
out spring return mechanism.
FINAL INSPECTION
After installation of the unit, a thorough inspection should be carried out. This should include inspecting the inside
of the unit and removing debris and tools, which may have been left behind by on site contractors. Replace any
panels, which may have been removed and close all access doors, ensuring that the door sealing gaskets have
not been damaged.
4. MAINTENANCE
It is recommended to carry out routine maintenance of the air handling unit REGO/RECU/OTK, 3–4 times per
year. REGO 1200P use the key to open the door. Do not release the door to swing freely, but open it slowly at a
90 degree angle. Be careful while opening, because clogged filters might fall out.
Besides preventive maintenance inspection, the following operations should be performed:
1. Rotary heat exchanger check.
Inspection of the rotary heat exchanger is performed once per year. Free
rotation of the rotary heat exchanger, continuity of the rotating belt, absence of damages of the rotor drums
and the seal gasket are checked. It is necessary to check the stretch of belt. Free belt will slide and the
efficiency of rotary heat exchanger will fall down. To reach maximal efficiency, rotor must turn at least 8 times
per minute. Polluted heat exchanger will decrease efficiency. Clean heat exchanger with an air blast or wash
with tepid water. Check out water falling on the electric motor.
2.
Plate heat exchanger check.
Inspection and dedusting of the plate heat exchanger is performed once per
year (it is removed from the unit and blown with an air blast or washed with tepid water).
Note:
plate heat exchanger may be replaced with summer cassette, when recuperation is needless.
3. Fans check (once per year).
Polluted fans decrease efficiency.
Before performing any inspection work, check whether the unit is switched
off from the electric power supply.
Summary of Contents for KOMPAKT OTK Series
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