Before Installation; Scope Of The Manual; Precautions For R410A; Installation - Daikin altherma ERHQ011BAV3 Installation Manual

3. B
EFORE INSTALLATION
WARNING
Since maximum working pressure for ERHQ is 4.0 MPa or
40 bar and for ERLQ is 4.17 MPa or 41.7 bar, pipes of
larger wall thickness may be required. Refer to paragraph
"8.1. Selection of piping material" on page

3.1. Scope of the manual

This manual describes the procedures for handling, installing and
connecting ERHQ and ERLQ units. This manual has been prepared
to ensure adequate maintenance of the unit, and it will provide help if
problems occur.

3.2. Precautions for R410A

■
The refrigerant requires strict cautions for keeping the system
clean, dry and tight.
- Clean and dry
Foreign materials (including mineral oils or moisture) should be
prevented from getting mixed into the system.
- Tight
Read "9. Precautions on refrigerant piping" on page 12
and follow these procedures correctly.
■
Since R410A is a mixed refrigerant, the required additional
refrigerant must be charged in its liquid state. (If the refrigerant is
in state of gas, its composition changes and the system will not
work properly).
■
The connected indoor unit must be the EKHBH/X016 unit
designed exclusively for R410A.

3.3. Installation

■
For installation of the indoor unit, refer to the indoor unit
installation manual.
■
Never operate the unit without the thermistors (R3T, R4T) or
pressure sensors (S1NPH, S1PH), burning of the compressor
may result.
■
Be sure to confirm the model name and the serial no. of the
outer (front) plates when attaching/detaching the plates to avoid
mistakes.
■
When closing the service panels, take care that the tightening
torque does not exceed 4.1 N•m.
3.4. Model identification
ERLQ units include special equipment (insulation, bottom plate
heater,...) to ensure good operation in areas where low ambient
temperature can occur together with high humidity conditions. In such
conditions the ERHQ models may experience problems with severe
ice build up on the aircooled coil. In case such conditions are
expected, the ERLQ must be installed instead. These models contain
countermeasures (insulation, bottom plate heater,...) to prevent
freeze up.
ER H Q 011 AA
Capacity class (kW)
Outdoor unit on R410A
H=low water temperature – ambient zone (0°C~–10°C)
L=low water temperature – ambient zone (–10°C~–20°C)
Split outdoor pair heatpump
ERHQ011~016BAV3+W1 + ERLQ011~016CAV3+W1
Outdoor unit for air to water heat pump
4PW57794-1C – 2013.04
12.
carefully
V3
V3=1~, 230 V, 50 Hz
W1=3N~, 400 V, 50 Hz
Series
INFORMATION
■
An ERLQ_CA outdoor unit can be connected to an
EKHBH/X016* indoor unit (bottom plate heater at
outdoor unit is controlled by the outdoor pcb). All
functionalities related to domestic hot water of an
ERLQ_CA are only applicable in combination with an
EKHBH/X016BB indoor unit.
■
An ERHQ0*BA outdoor unit can be connected to an
EKHBH/X016BB indoor unit or to an EKHBH/
X016AA/AB/BA indoor unit (if a bottom plate heater
kit is required, see

3.5. Accessories

■
Check if the following accessories are included with the unit
Installation manual
Cable tie
Fluorinated greenhouse gases
label
Multilingual fluorinated
greenhouse gases label
Screw (M4x12)(for ERLQ only)
Thermistor fixing plate
(for ERLQ only, spare)
Thermistor fixture
(for ERLQ only)
See the figure below for the location of the accessories.
1
"Possible options" on page 5).
1
2
1
1
1
1
1
1 Accessories
Installation manual
4