Additional Installation Site Requirements Of The Outdoor Unit In Cold Climates; Installation Site Requirements Of The Indoor Unit; Preparing Refrigerant Piping; Refrigerant Piping Requirements - Daikin Altherma ERLQ004-006-008CA Reference Manual

6.2.2 Additional installation site requirements
of the outdoor unit in cold climates
Protect the outdoor unit against direct snowfall and take care that the
outdoor unit is NEVER snowed up.
c
a Snow cover or shed
b Pedestal
c Prevailing wind direction
d Air outlet
▪ In any case, provide at least 300 mm of free space below the unit.
Additionally, make sure the unit is positioned at least 100 mm
above the maximum expected level of snow. See
the outdoor unit" on page 23 for more details.
In heavy snowfall areas it is very important to select an installation
site where the snow will NOT affect the unit. If lateral snowfall is
possible, make sure that the heat exchanger coil is NOT affected by
the snow. If necessary, install a snow cover or shed and a pedestal.
6.2.3 Installation site requirements of the
indoor unit
INFORMATION
Also read the precautions and requirements in the
"General safety precautions" chapter.
▪ Mind the following measurements guidelines:
Maximum refrigerant piping length between indoor
unit and outdoor unit
Minimum refrigerant piping length between indoor
unit and outdoor unit
Maximum height difference between indoor unit and
outdoor unit
▪ Mind the following spacing installation guidelines:
ERLQ004~008CA + EHVZ04+08S18CB
Daikin Altherma – Low temperature split
4P401676-1 – 2015.02
a
c
b
"7.3 Mounting
30 m
3 m
20 m
>10 >10
(mm)
Do NOT install the unit in places such as:
▪ In places where a mineral oil mist, spray or vapour may be
present in the atmosphere. Plastic parts may deteriorate and fall
off or cause water leakage.
▪ Sound sensitive areas (e.g. near a bedroom and the like), so that
the operation noise will cause no trouble.
▪ The foundation must be strong enough to bear the weight of the
unit. Take the weight of the unit with a domestic hot water tank full
of water into account.
Make sure, in the event of a water leak, water cannot cause any
damage to the installation space and surroundings.
▪ In places with high humidity (max. RH=85%), for example a
bathroom.
▪ In places where frost is possible. Ambient temperature around the
indoor unit should be >5°C.
▪ The indoor unit is designed for indoor installation only and for
ambient temperatures ranging from 5~35°C.
6.3

Preparing refrigerant piping

6.3.1

Refrigerant piping requirements

INFORMATION
Also read the precautions and requirements in the
"General safety precautions" chapter.
▪ Piping material: Phosphoric acid deoxidised seamless copper.
▪ Piping diameter:
Liquid piping
Gas piping
▪ Piping temper grade and thickness:
Outer diameter Temper grade
(Ø)
6.4 mm (1/4") Annealed (O)
15.9 mm (5/8") Annealed (O)
(a) Depending on the applicable legislation and the unit's
maximum working pressure (see "PS High" on the unit
name plate), larger piping thickness might be required.
6.3.2

Refrigerant piping insulation

▪ Use polyethylene foam as insulation material:
▪ with a heat transfer rate between 0.041 and 0.052 W/mK (0.035
and 0.045 kcal/mh°C)
▪ with a heat resistance of at least 120°C
▪ Insulation thickness
6 Preparation
Ø6.4 mm (1/4")
Ø15.9 mm (5/8")
(a)
Thickness (t)
Ø
≥0.8 mm
t
≥1.0 mm

Installer reference guide

17