Bedienungsanleitung REMKO ATY350 (Seite 22 von 32) (Englisch)

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The units have been filled at

the factory with dry nitrogen to

check for leaks.

The pressurized nitrogen will

be released when the union

nuts are loosened.

CAUTION

Connection of

refrigerant lines

The on site connection of the

refrigerant lines is made inside the

unit.

If necessary, a reducer or

expansion ﬁtting must be installed

on the interior units. These ﬁttings

are part of the accessory kit

provided with the interior unit.

After assembly, the connections

must be insulated impervious to

vapor diffusion.

The following instructions describe

the installation of the refrigerant

circuit and the assembly of the

interior unit and the exterior unit.

Check the „Technical Data“

chart for the required pipe

diameters and connect the

refrigerant line.

2. To bend the copper tubing, use

the appropriate bending tool to

prevent kinks in the tubing.

3. At installation, check the

bending radii of the refrigerant

lines and never bend a pipe

twice at the same location.

This could result in brittleness

and danger of cracks.

4. Route the refrigerant lines from

the interior unit to the exterior

unit. Make sure they are

sufﬁciently attached and take

measures for the oil return, if

necessary!

5. Install the exterior unit with the

wall or ﬂoor bracket to statically

admissible building sections

(pay attention to the installation

instructions for the brackets).

6. Make sure that no body

vibration is transferred to part

of the building. Body

vibration transfers are reduced

by vibration dampers!

7. Remove the factory installed

protective caps as well as the

union nuts on the blocking

valve connections and use them

for further installation.

8. Before ﬂanging the refrigerant

lines, make sure, that the union

nut is on the pipe.

9. Prepare the routed refrigerant

lines as shown below

(Fig. 12+13, page 23).

10.

Check if the ﬂange has the

correct shape (Fig. 14,

page 23).

11.

Connect the refrigerant lines

with the blocking valves ﬁrst by

hand, to ensure proper seating.

Use only tools which are

approved for use in an HVAC

environment. Pipe cutter,

deburrer, bending pliers and

ﬂanging tool.

NOTE

12.

Then tighten the ﬁttings with

2 properly sized open-ended

wrenches.

In any case, while tightening,

counter with one open-ended

wrench (Fig. 15, page 23).

13.

Apply appropriate heat

insulation to both installed

refrigerant lines, including

connector.

14.

Only use insulating hoses

suitable and diffusion-safe or

the temperature range.

Additional notes for

installation

■

For the combination of the

exterior unit with some interior

units, the connection of the

refrigerant lines may differ. In

that case, install the provided

reducer or expansion ﬁttings to

the interior unit.

■

If the length of the connector

line is longer than

5 m, then refrigerant must be

added for initial operation. (See

chapter „Add refrigerant“).

REMKO ATY

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