Daikin RXYTQ10U7YF [25/64] Installation

Daikin RXYTQ10U7YF [25/64] Installation
6 Installation
Installer and user reference guide
25
RXYTQ8~16U7YF
VRV IV+ heat pump for high ambient temperatures
4P561157-1 – 2018.09
NOTICE
The refrigerant charge of the system must be less than
100 kg. This means that in case the calculated total
refrigerant charge is equal to or more than 95kg you must
divide your multiple outdoor system into smaller
independent systems, each containing less than 95 kg
refrigerant charge. For factory charge, refer to the unit
name plate.
Formula:
R=[(X
1
ר22.2)×0.37+(X
2
ר19.1)×0.26+(X
3
ר15.9)×0.18+
(X
4
ר12.7)×0.12+(X
5
ר9.5)×0.059+(X
6
ר6.4)×0.022]+A
R Additional refrigerant to be charged [in kg and rounded off
to 1 decimal place]
X
1...6
Total length [m] of liquid piping size at Øa
A Parameter A
Parameter A
(a)
Piping length
(b)
CR A
8HP 10+12HP 14+16HP
≤30m 50%≤CR≤105% 0kg 1kg
105%<CR≤130% 0.5kg 1.5kg
>30m 50%≤CR≤70% 0kg 1kg
70%<CR≤85% 0.3kg 0.5kg 1.5kg
85%<CR≤105% 0.7kg 1kg 2kg
105%<CR≤130% 1.2kg 1.5kg
(a) In case of a multi-outdoor-unit system, add the sum of the
individual outdoor unit charge factors.
(b) Piping length is considered the distance from the outdoor
unit to the farthest indoor unit
CR Total indoor unit capacity connection ratio
Metric piping. When using metric piping, replace the weight factors
in the formula by the ones from the following table:
Inch piping Metric piping
Piping Weight factor Piping Weight factor
Ø6.4mm 0.022 Ø6mm 0.018
Ø9.5mm 0.059 Ø10mm 0.065
Ø12.7mm 0.12 Ø12mm 0.097
Ø15.9mm 0.18 Ø15mm 0.16
Ø16mm 0.18
Ø19.1mm 0.26 Ø18mm 0.24
Ø22.2mm 0.37 Ø22mm 0.35
Connection ratio requirements. When selecting indoor units, the
connection ratio must comply with the following requirements. For
more information, see the technical engineering data.
Indoor units CR
VRVDX 50~130%
CR Total indoor unit capacity connection ratio

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