Daikin Altherma ERHQ011-014-016BA, Руководство по установке для специалистов

Страница: 34 / 108

7 Installation
Installer reference guide
34
ERHQ+ERLQ011~016 + 16CBV
Daikin Altherma – Low temperature split
4P449970-1 – 2016.06
2×
2 Hang the backup heater onto the wall bracket.
3 Mark the position of the hole at the bottom of the backup
heater.
4 Remove the backup heater from the wall bracket.
5 Drill a hole for the bottom screw and insert a plug.
6 Hang the backup heater onto the wall bracket. Make sure it is
fixed properly.
7 Fix the bottom of the backup heater to the wall with an M5
screw.
7.6 Connecting the refrigerant piping
7.6.1 About connecting the refrigerant piping
Before connecting the refrigerant piping
Make sure the outdoor and indoor unit are mounted.
Typical workflow
Connecting the refrigerant piping involves:
▪ Connecting the refrigerant piping to the outdoor unit
▪ Connecting the refrigerant piping to the indoor unit
▪ Installing oil traps
▪ Insulating the refrigerant piping
▪ Keeping in mind the guidelines for:
▪ Pipe bending
▪ Flaring pipe ends
▪ Brazing
▪ Using the stop valves
7.6.2 Precautions when connecting the
refrigerant piping
INFORMATION
Also read the precautions and requirements in the
following chapters:
▪ General safety precautions
▪ Preparation
DANGER: RISK OF BURNING
CAUTION
▪ Do NOT use mineral oil on flared part.
▪ Do NOT reuse piping from previous installations.
▪ NEVER install a drier to this R410A unit to guarantee
its lifetime. The drying material may dissolve and
damage the system.
NOTICE
Take the following precautions on refrigerant piping into
account:
▪ Avoid anything but the designated refrigerant to get
mixed into the refrigerant cycle (e.g. air).
▪ Only use R410A when adding refrigerant.
▪ Only use installation tools (e.g. manifold gauge set) that
are exclusively used for R410A installations to
withstand the pressure and to prevent foreign materials
(e.g. mineral oils and moisture) from mixing into the
system.
▪ Install the piping so that the flare is NOT subjected to
mechanical stress
▪ Protect the piping as described in the following table to
prevent dirt, liquid or dust from entering the piping.
▪ Use caution when passing copper tubes through walls
(see figure below).
Unit Installation period Protection method
Outdoor unit >1 month Pinch the pipe
<1 month Pinch or tape the pipe
Indoor unit Regardless of the
period
INFORMATION
Do NOT open the refrigerant stop valve before checking
the refrigerant piping. When you need to charge additional
refrigerant it is recommended to open the refrigerant stop
valve after charging.
7.6.3 Guidelines when connecting the
refrigerant piping
Take the following guidelines into account when connecting pipes:
▪ Coat the flare inner surface with ether oil or ester oil when
connecting a flare nut. Tighten 3 or 4 turns by hand, before
tightening firmly.