To Check For Refrigerant Leaks After Charging; Electrical Installation; Specifications Of Standard Wiring Components - Daikin 2MXM40A2V1B9 Installation Manual

7 Electrical installation

NOTICE
Applicable legislation on fluorinated greenhouse gases
requires that the refrigerant charge of the unit is indicated
both in weight and CO
2
Formula to calculate the quantity in CO
tonnes: GWP value of the refrigerant × total refrigerant
charge [in kg] / 1000
Use the GWP value mentioned on the refrigerant charge
label.
2 Fix the label on the inside of the outdoor unit near the gas and
liquid stop valves.
6.6 To check for refrigerant leaks after
charging
INFORMATION
Applicable ONLY for combination with indoor units CVXM-
A9, FVXM-A9.
All field made refrigerant joints must be tested for tightness.
No leak shall be detected with a test method that has a sensitivity of
5 grams refrigerant per year or better, at a pressure of at least
0.25 times the maximum working pressure (see "PS High" on the
unit name plate).
In case a leak is detected, recover the refrigerant and repair the
joint(s).
Then:
▪ perform the leak tests see
▪ charge refrigerant.
▪ check for refrigerant leaks after charging (see above).
7 Electrical installation
DANGER: RISK OF ELECTROCUTION
WARNING
▪ All wiring MUST be performed by an authorised
electrician and MUST comply with the applicable
national wiring regulation.
▪ Make electrical connections to the fixed wiring.
▪ All components procured on-site and all electrical
construction MUST
legislation.
WARNING
ALWAYS use multicore cable for power supply cables.
WARNING
Use an all-pole disconnection type breaker with at least
3 mm between the contact point gaps that provides full
disconnection under overvoltage category III.
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.
WARNING
Do NOT connect the power supply to the indoor unit. This
could result in electrical shock or fire.
Installation manual
16
equivalent.
equivalent
2
"5.3.1 To check for leaks" [ 4 14].
comply with the applicable
WARNING
▪ Do NOT use locally purchased electrical parts inside
the product.
▪ Do NOT branch the power supply for the drain pump,
etc. from the terminal block. This could result in
electrical shock or fire.
WARNING
Keep the interconnection wiring away from copper pipes
without thermal insulation as such pipes will be very hot.
DANGER: RISK OF ELECTROCUTION
All electrical parts (including thermistors) are powered by
the power supply. Do NOT touch them with bare hands.
DANGER: RISK OF ELECTROCUTION
Disconnect the power supply for more than 10 minutes,
and measure the voltage at the terminals of main circuit
capacitors or electrical components before servicing. The
voltage MUST be less than 50 V DC before you can touch
electrical components. For the location of the terminals,
see the wiring diagram.
b
l a
DC
DC AC
-
+
k
j
a DB1 diode bridge
b S90 thermistor lead wire
c LED A
d S40 thermal overload relay lead wire
e S20 (white) room A electronic expansion valve coil
f S21 (red) room B electronic expansion valve coil
g S80 (white) 4-way valve lead wire connector
h S70 fan motor lead wire
i S99 heating lock
j S91 (red) liquid thermistor lead wire
k S92 (white)gas thermistor lead wire
l Multimeter (DC voltage range)
7.1 Specifications of standard wiring
components
NOTICE
We recommend using solid (single-core) wires. If stranded
wires are used, twist the conductor to consolidate the end
or twist the conductor to consolidate the end in
combination with the usage of a round crimp-style terminal
on the end of the conductor. Details are described in
"Guidelines when connecting the electrical wiring" in the
installer reference guide.
c
d
i h g f e
2MXM40+50A9
R32 Split series
3P600450-8T – 2022.09