Handleiding
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5 Preparation
Installer reference guide
9
RZQG71L9V1L + RZQG71~125L8Y1L + RZQG140L7Y1L
Split system air conditioners
4P473074-1 – 2017.03
Reuse not allowed
You may not reuse existing piping in the following cases:
▪ When the compressor in the old installation had problems
(example: breakdown). Possible consequence: oxidised coolant
oil, scale residue and other adverse effects.
▪ When the indoor and outdoor units were disconnected from the
piping for a long time. Possible consequence: water and dirt in
the piping.
▪ When the copper piping is corroded.
Reuse allowed
In other cases than above, you may reuse existing piping but keep
the following in mind:
Item Description
Piping diameter Must comply with requirements. See
"5.3.2Refrigerant piping requirements"on
page9.
Piping material
Piping length and
height difference
Piping insulation If deteriorated, must be replaced.
Must comply with requirements. See
"5.3.3Refrigerant piping insulation"on
page10.
Flare connections May not be reused. Make new ones to
prevent leaks. See "6.4.3Guidelines when
connecting the refrigerant piping"on
page13 and "6.4.5To flare the pipe
end"on page13.
Welded connections Must be checked for gas leaks.
Cleaning pipes If the following conditions are met, you do
not have to clean the pipes. Otherwise, you
must clean the pipes, or install new ones.
Conditions:
▪ The total one‑way piping length is <50m
(i.e. L1<50m).
▪ You pumped down the old system
correctly. This means:
▪ Operated the unit continuously for
30minutes in cooling mode.
▪ Pumped down the system.
▪ Removed the old units.
▪ Piping is not contaminated (see below).
To check if piping is contaminated
You must check if existing piping is contaminated because using
piping with deteriorated oil will cause compressor breakdown.
Prerequisite: You need an oil checking reference card. This is
available from your dealer.
1 Put some residual oil from the piping on a piece of white paper.
2 Compare the colours:
If the oil colour is… Then…
Identical to or darker than the
circled colour on the reference
card
You must clean the existing
piping, or install new piping.
Lighter than the circled colour
on the reference card
You can reuse the piping
without cleaning.
5.3.2 Refrigerant piping requirements
INFORMATION
Also read the precautions and requirements in the
"General safety precautions" chapter.
Refrigerant piping material
▪ Piping material: Phosphoric acid deoxidised seamless copper.
▪ Piping temper grade and thickness:
Outer diameter
(Ø)
Temper grade Thickness (t)
(a)
6.4mm (1/4")
9.5mm (3/8")
12.7mm (1/2")
Annealed (O) ≥0.8mm
t
Ø
15.9mm (5/8") Annealed (O) ≥1.0mm
19.1mm (3/4") Half hard (1/2H)
(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.
▪ Flare connections: Only use annealed material.
Refrigerant piping diameter
The refrigerant piping diameters (for L1) must comply with the
following:
Model New
(a)
/
Existing
(b)
L1 liquid
piping
L1 gas piping
RZQG71 Size‑down Ø6.4mm Ø12.7mm
Standard Ø9.5mm Ø15.9mm
Size‑up Ø12.7mm —
RZQG100~140 Size‑down Ø6.4mm —
Standard Ø9.5mm Ø15.9mm
Size‑up Ø12.7mm Ø19.1mm
(a) When installing new piping, use the same diameters as
the connections on the outdoor units (i.e. standard
diameters for liquid and gas piping).
(b) When reusing existing piping, you may use the size‑up or
size‑down diameters, but then capacity might decrease,
and stricter piping length requirements are applicable.
Assess these limitations in relation to the complete
installation.
Refrigerant piping length and height difference
The piping length and height difference must comply with the
following requirements:
H1
L1
Requirement RZQG71 RZQG100~140
Total one‑way
piping length
Ø size-down 3m≤L1≤10m (10m)
(a)
Ø standard 3m≤L1≤50m
(70m)
(a)
3m≤L1≤75m
(90m)
(a)
Ø size-up 3m≤L1≤25m
(35m)
(a)
3m≤L1≤35m
(45m)
(a)
Height difference between the
indoor unit and the outdoor unit
H1≤30m
(a) When piping length is <5 m, a complete recharge of the
unit is required.
Parenthesised figure represents the equivalent length.
Bekijk gratis de handleiding van Daikin RZQG71L8Y1L, stel vragen en lees de antwoorden op veelvoorkomende problemen, of gebruik onze assistent om sneller informatie in de handleiding te vinden of uitleg te krijgen over specifieke functies.
Productinformatie
| Merk | Daikin |
| Model | RZQG71L8Y1L |
| Categorie | Airco |
| Taal | Nederlands |
| Grootte | 5217 MB |
