Daikin RHBH16CB [23/104] Preparation
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Daikin RHBH16CB [23/104] Preparation

Daikin RHBH16CB [23/104] Preparation
6 Preparation
Installer reference guide
23
RRLQ011~016CA + RHBH/X11+16CB
ROTEX HPSU low temperature Bi‑bloc
4P384980-1C – 2017.04
INFORMATION
You can use the optional snow cover (RK016SNC).
a
b
c
c
d
a Snow cover or shed
b Pedestal (minimum height=150mm)
c Prevailing wind direction
d Air outlet
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 measurement guidelines:
Maximum refrigerant piping length between indoor
unit and outdoor unit
50m (70m)
(a)
Minimum refrigerant piping length between indoor
unit and outdoor unit
3m
Maximum height difference between indoor unit and
outdoor unit
30m
Maximum distance between the 3‑way valve and
the indoor unit (for installations with domestic hot
water tank)
3m
Maximum distance between the domestic hot water
tank and the indoor unit (for installations with
domestic hot water tank)
10m
(a) Parenthesised figure represents the equivalent length.
▪ Mind the following spacing installation guidelines:
≥1150
200
200
10 10 500
(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), 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 Ø9.5mm (3/8")
Gas piping Ø15.9mm (5/8")
▪ Piping temper grade and thickness:
Outer diameter
(Ø)
Temper grade Thickness (t)
(a)
9.5mm (3/8") Annealed (O) ≥0.8mm
t
Ø
15.9mm (5/8") Annealed (O) ≥1.0mm
(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

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