Daikin ERA200AMYFB handleiding

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Handleiding

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15 Piping installation
Installation and operation manual
28
ERA200~300AMYFB
Inverter outdoor unit for AHU option kit and air curtains
4P780153-1 – 2024.07
When brazing, blow through with nitrogen to prevent creation of
large quantities of oxidised film on the inside of the piping. This
film adversely affects valves and compressors in the refrigerating
system and prevents proper operation.
Set the nitrogen pressure to 20 kPa (0.2 bar) (just enough so it
can be felt on the skin) with a pressure-reducing valve.
a b c d e
f
f
a Refrigerant piping
b Part to be brazed
c Taping
d Manual valve
e Pressure-reducing valve
f Nitrogen
Do NOT use anti-oxidants when brazing pipe joints. Residue can
clog pipes and break equipment.
Do NOT use flux when brazing copper-to-copper refrigerant
piping. Use phosphor copper brazing filler alloy (BCuP), which
does NOT require flux.
Flux has an extremely harmful influence on refrigerant piping
systems. For instance, if chlorine based flux is used, it will cause
pipe corrosion or, in particular, if the flux contains fluorine, it will
deteriorate the refrigerant oil.
ALWAYS protect the surrounding surfaces (e.g. insulation foam)
from heat when brazing.
15.2.4 To connect the refrigerant piping to the
outdoor unit
Piping length. Keep field piping as short as possible.
Piping protection. Protect the field piping against physical
damage.
1 Do the following:
Remove the service cover. See "14.2.1To open the outdoor
unit"[424].
Remove the piping intake plate (a) with screw (b).
a
b
2 Choose a piping route (a, b or c).
a
b
c
INFORMATION
b b bb
a
a
Punch out the knockout (a) in the bottom plate or cover
plate by tapping on the attachment points with a flat
head screwdriver and a hammer.
Optionally, cut out the slits (b) with a metal saw.
NOTICE
Precautions when making knockout holes:
Avoid damaging the casing and underlying piping.
After making the knockout holes, we recommend to
remove the burrs and paint the edges and areas
around the edges using repair paint to prevent rusting.
When passing electrical wiring through the knockout
holes, wrap the wiring with protective tape to prevent
damage.
3 Do the following:
Connect the liquid pipe (a) to the liquid stop valve. (brazing)
Connect the gas pipe (b) to the gas stop valve. (brazing)
b
a
b
a
ERA200 ERA250+300
NOTICE
When brazing: First braze the liquid side piping, then the
gas side piping. Enter the electrode from the front of the
unit and the welding torch from the right side to braze with
the flames facing outside and avoid the compressor sound
insulation and other piping.
a b c
a b f g
cde
A
A
a Electrode
b Burning-resistant plate
c Welding torch
d Flames
e Compressor sound insulation
f Liquid side piping
g Gas side piping

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Productinformatie

MerkDaikin
ModelERA200AMYFB
CategorieVentilator
TaalNederlands
Grootte8144 MB