Connecting The Refrigerant Piping; To Connect The Refrigerant Piping To The Indoor Unit; To Check For Leaks; Connecting The Electrical Wiring - Daikin FFA25A2VEB Manual De Instalación Y Funcionamiento

4 Installation
e Clamp
f Terminal board for transmission wiring
g Opening for cables
h Wiring diagram label (on the back of the control box lid)
i Remote controller wiring
2 Turn ON the power.
3 Start cooling operation (see
page 10).
4 Gradually pour approximately 1 l of water through the air
discharge outlet, and check for leaks.
a Plastic watering can
b Service drain outlet (with rubber plug). Use this outlet to
drain water from the drain pan.
c Drain pump location
d Drain pipe connection
e Drain pipe
5 Turn OFF the power.
6 Disconnect the electrical wiring.
▪ Remove the control box cover.
▪ Disconnect the power supply and earth.
▪ Reattach the control box cover.
When electrical wiring is finished already
1 Start cooling operation (see
page 10).
2 Gradually pour approximately 1 l of water through the air
discharge outlet, and check for leaks (see
wiring is not finished yet" on
4.2

Connecting the refrigerant piping

DANGER: RISK OF BURNING
4.2.1 To connect the refrigerant piping to the
indoor unit
CAUTION
Install refrigerating pipe or components in a position where
they are unlikely to be exposed to any substance which
may corrode refrigerant containing components, unless the
components are constructed of materials which are
inherently resistant to being corroded or are suitably
protected against being so corroded.
WARNING: FLAMMABLE MATERIAL
The R32 refrigerant (if applicable) in this unit is mildly
flammable. Refer to the outdoor unit specifications for the
type of refrigerant to be used.
▪ Pipe length. Keep refrigerant piping as short as possible.
▪ Flare connections. Connect refrigerant piping to the unit using
flare connections.
Installation and operation manual
8
"6.2 To perform a test run" on
e
d
c
b
a
"6.2 To perform a test run" on
"When electrical
page 7).
▪ Insulation. Insulate the refrigerant piping on the indoor unit as
follows:
A
a b c
1
B A
A Gas piping
B Liquid piping
a Insulation material (field supply)
b Cable tie (accessory)
c Insulation pieces: Large (gas pipe), small (liquid pipe)
(accessories)
d Flare nut (attached to the unit)
e Refrigerant pipe connection (attached to the unit)
f Unit
g Sealing pads: Medium 1 (gas pipe), medium 2 (liquid pipe)
(accessories)
1 Turn up the seams of the insulation pieces.
2 Attach to the base of the unit.
3 Tighten the cable ties on the insulation pieces.
4 Wrap the sealing pad from the base of the unit to the top of
the flare nut.
NOTICE
Make sure to insulate all refrigerant piping. Any exposed
piping might cause condensation.
4.2.2

To check for leaks

NOTICE
Do NOT exceed the unit's maximum working pressure (see
"PS High" on the unit name plate).
NOTICE
Make sure to use a recommended bubble test solution
from your wholesaler. Do not use soap water, which may
cause cracking of flare nuts (soap water may contain salt,
which absorbs moisture that will freeze when the piping
gets cold), and/or lead to corrosion of flared joints (soap
water may contain ammonia which causes a corrosive
effect between the brass flare nut and the copper flare).
1 Charge the system with nitrogen gas up to a gauge pressure of
at least 200 kPa (2 bar). It is recommended to pressurize to
3000 kPa (30 bar) in order to detect small leaks.
2 Check for leaks by applying the bubble test solution to all
connections.
3 Discharge all nitrogen gas.
4.3

Connecting the electrical wiring

DANGER: RISK OF ELECTROCUTION
WARNING
ALWAYS use multicore cable for power supply cables.
WARNING
If the supply cord is damaged, it MUST be replaced by the
manufacturer, its service agent or similarly qualified
persons in order to avoid a hazard.
B
d b e f a b c d b
3 2 3
1
g g
4 4
FFA25~60A2VEB(9)
Split system air conditioners
4P456960-1B – 2018.08
e f
2