Important Information Regarding The Refrigerant Used; Calculating The Additional Refrigerant Charge; How To Calculate The Additional Refrigerant To Be Charged; Method For Adding Refrigerant - Daikin KHRQ23M29H Installationsanleitung

13.2. Important information regarding the refrigerant
used
This product contains fluorinated greenhouse gases covered by the
Kyoto Protocol. Do not vent gases into the atmosphere.
Refrigerant type: R410A
(1)
GWP value: 1975
(1)
GWP = global warming potential
Please fill in with indelible ink,
the factory refrigerant charge of the product,
the additional refrigerant amount charged in the field and
+ the total refrigerant charge
on the fluorinated greenhouse gases label supplied with the product.
The filled out label must be adhered on the inside of the product and
in the proximity of the product charging port (e.g. on the inside of the
service cover).
6 5
1 Factory refrigerant charge of the product: see unit name
plate
2 Additional refrigerant amount charged in the field
3 Total refrigerant charge
4 Contains fluorinated greenhouse gases covered by the
Kyoto Protocol
5 Outdoor unit
6 Refrigerant cylinder and manifold for charging
INFORMATION
National implementation of EU regulation on certain
fluorinated greenhouse gases may require to provide the
appropriate official national language on the unit.
Therefore, an additional multilingual fluorinated green-
house gases label is supplied with the unit.
Sticking instructions are illustrated on the backside of that
label.
Installation manual
23
4
1
2
3

13.3. Calculating the additional refrigerant charge

How to calculate the additional refrigerant to be charged

Additional refrigerant to be charged
R
should be rounded off in units of 0.1 kg
R
= [(X x Ø22.2) x0.37] + [(X
1
[(X x Ø15.9) x0.18] + [(X
3
[(X x Ø9.5) x0.059] + [(X
5
X =Total length (m) of liquid piping size at Øa
1...6
Refrigerant amount in function of connection capacity
<100% 100<X≤115%
Additional 0 10 Hp
amount
12 Hp
A
(kg)
14 Hp
16 Hp
Connection capacity ratio of HXHD indoor unit can never exceed
100%.

13.4. Method for adding refrigerant

Precautions when adding refrigerant

Be sure to charge the specified amount of refrigerant in liquid state.
Since this refrigerant is a mixed refrigerant, adding it in gas form may
cause the refrigerant composition to change, preventing normal
operation.
Before charging, check whether the refrigerant cylinder is
equipped with a siphon tube or not.
Charge the liquid
refrigerant with the
cylinder in upright
position.
Be sure to use tools exclusively for R410A to ensure required
pressure resistance and to prevent foreign materials from mixing
into the system.
NOTICE
Charging with an unsuitable substance may cause
explosions and accidents, so always make sure that the
appropriate refrigerant (R410A) is charged.
Refrigerant containers must be opened slowly.
WARNING
When charging a system, charging over the
permissible quantity can cause liquid hammer.
Always use protective gloves and protect your eyes
when charging refrigerant.
R
(kg)
x Ø19.1) x0.26] +
2
+ A
x Ø12.7) x0.12] + x 1.02 + 3.6
4
x Ø6.4) x0.022]
6
ratio of DX indoor unit
115<X≤130%
0.4 10 Hp 1.2
0.5 12 Hp 1.4
0.6 14 Hp 1.6
0.6 16 Hp 1.8
Charge the liquid
refrigerant with the
cylinder in up-side-down
position.
REYAQ10~16P7Y1B
VRVIII system outdoor unit
4PW62582-1A – 08.2011