Refrigerant Piping Installation - mundoclima MVD DC2 Manual De Instalación Y Usuario

Caution
• All the figures in this manual are for illustration purposes only.
The actual air conditioner you purchased may not have the
same appearance and functions as those listed in these
figures. Please refer to the actual product model.
3.3 Remove the Grille and Side Plate
3.3.1 Remove the air inlet grille and side plate
(1) Pull the grille up, and remove the screws from the side to remove
the grille.
Figure 3.10
3.3.2 Remove the air inlet grille and side plate
Secure the lifting assembly to the lifting bolt. (See Figure 3.11)
Tighten the installation bolts to the indoor unit. (See Figure 3.12)
IDU
During installation, use tools like the pulley to lift the indoor unit to the lifting
bolt, and fasten them securely with installation bolts. (See Figure 3.13)
Side plate
Grille
Nut
Washer
Lifting bolt
Lifting assembly
Figure 3.11
8 ~ 13 mm
Installation bolts
(max: 40 mm)
Figure 3.12
Figure 3.13

4. Refrigerant Piping Installation

4.1 Length and Level Difference Requirements for the Piping
Connections to the Indoor and Outdoor Units
The length and level difference requirements for the refrigerant piping
are different for different indoor and outdoor units. Refer to the
installation manual of the outdoor unit.
4.2 Piping Material and Size
1. Piping material: Copper pipes for air handling.
2. Piping size: Choose and purchase copper pipes that correspond
to the length and size calculated for the selected model in the
installation manual of the outdoor unit and your actual project
requirements.
4.3 Piping Layout
1. Seal the two ends of the piping properly before you connect the
indoor and outdoor piping. Once unsealed, connect the piping of
the indoor and outdoor units as quickly as possible to prevent dust
or other debris from entering the piping system via the unsealed
ends, as this may cause the system to malfunction.
2. If the piping needs to go through walls, drill the opening in the wall,
and place accessories like casings and covers for the opening
properly.
3. Place the refrigerant connecting piping and the communication
wiring for the indoor and outdoor units together, and bundle them
tightly to make sure air does not enter and condensate to form
water that may leak from the system.
4. Insert the bundled piping and wiring from outside the room through
the wall opening into the room. Be careful when you lay out the
piping. Do not damage the piping.
4.4 Piping Installation
Refer to the installation manual attached with the outdoor unit on
•
installation of the refrigerant piping for the outdoor unit.
All gas and liquid piping must be properly insulated; otherwise, this
•
may cause water to leak. Use heat insulation materials that can
withstand high temperatures above 120°C to insulate the gas pipes.
In addition, the insulation of the refrigerant piping should be reinforced
(20 mm or thicker) in situations where there is high temperature
and/or high humidity (when part of refrigerant piping part is higher
than 30°C or when the humidity exceeds RH80%). Otherwise, the
surface of the heat insulation material may be exposed.
Before the works are carried out, verify that the refrigerant is
•
R410A. If the wrong refrigerant is used, the unit may malfunction.
Other than the specified refrigerant, do not let air or other gases
•
enter the refrigeration circuit.
If the refrigerant leaks during installation, make sure you fully
•
ventilate the room.
Use two wrenches when you install or dismantle the piping, a
•
common wrench and a torque wrench. See Figure 4.1.
24
Lifting bolt
Lifting
assembly
Installation bolt