About Electrical Compliance; Precautions When Connecting The Electrical Wiring; Guidelines When Connecting The Electrical Wiring; To Connect The Electrical Wiring On The Outdoor Unit - Daikin Altherma ERLQ004-006-008CA Reference Manual

Typical workflow
Connecting the electrical wiring typically consists of the following
stages:
1 Making sure the power supply system complies with the
electrical specifications of the heat pump.
2 Connecting the electrical wiring to the outdoor unit.
3 Connecting the electrical wiring to the indoor unit.
4 Connecting the main power supply.
5 Connecting the backup heater power supply.
6 Connecting the user interface.
7 Connecting the shut–off valves.
8 Connecting the electrical meters.
9 Connecting the domestic hot water pump.
10 Connecting the alarm output.
11 Connecting the changeover to an external heat source.
12 Connecting the power consumption digital inputs.
7.9.2

About electrical compliance

Only for ERLQ006CAV3+ERLQ008CAV3
Equipment complying with
International Technical Standard setting the limits for harmonic
currents produced by equipment connected to public low-voltage
systems with input current >16 A and ≤75 A per phase.).
Only for indoor units
See "7.9.8 To connect the backup heater power supply" on
page 35.
7.9.3 Precautions when connecting the
electrical wiring
INFORMATION
Also read the precautions and requirements in the
following chapters:
▪ General safety precautions
▪ Preparation
DANGER: RISK OF ELECTROCUTION
INFORMATION
More information about the legend and the location of the
wiring diagram of the unit can be found in
diagram" on page 78.
WARNING
ALWAYS use multicore cable for power supply cables.
7.9.4 Guidelines when connecting the electrical
wiring
Keep the following in mind:
▪ If stranded conductor wires are being used, install a round crimp-
style terminal on the tip. Place the round crimp-style terminal on
the wire up to the covered part and fasten the terminal with the
appropriate tool.
b a
a Stranded conductor wire
b Round crimp-style terminal
▪ Use the following methods for installing wires:

ERLQ004~008CA + EHVZ04+08S18CB

Daikin Altherma – Low temperature split
4P401676-1 – 2015.02
EN/IEC 61000‑3‑12 (European/
"14.6 Wiring
Wire type
Single core wire
A
a Curled single core wire
b Screw
c Flat washer
c b
Stranded conductor
wire with round
crimp-style terminal
a Terminal
b Screw
c Flat washer
NOTICE
Precautions when laying power wiring:
▪ Do not connect wiring of different thicknesses to the
power terminal block (slack in the power wiring may
cause abnormal heat).
▪ When connecting wiring which is the same thickness,
do as shown in the figure below.
▪ For wiring, use the designated power wire and connect
firmly, then secure to prevent outside pressure being
exerted on the terminal board.
▪ Use an appropriate screwdriver for tightening the
terminal screws. A screwdriver with a small head will
damage the head and make proper tightening
impossible.
▪ Over-tightening the terminal screws may break them.
Tightening torques
Item
M4 (X1M)
M4 (earth)
7.9.5 To connect the electrical wiring on the
outdoor unit
1 Remove the 2 switch box cover screws.
2 Remove the switch box cover.
2
2×
3 Strip insulation (20 mm) from the wires.
7 Installation
Installation method
c b
AA´
A´
c
a a
a b c
B
B
a
Tightening torque (N•m)
1.2~1.5
1
Installer reference guide
33