ERHQ011~W1 + ERLQ011~W1
Outdoor unit for air to water heat pump
4PW57794-1 – 08.2010
Installation manual
4
3.
B
EFORE
INSTALLATION
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 14
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.
3.5.
Accessories
■
Check if the following accessories are included with the unit
See the figure below for the location of the accessories.
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 13
ER
H
Q
011
AA
V3
V3=1~, 230 V, 50 Hz
W1=3N~, 400 V, 50 Hz
Series
Capacity class (kW)
Outdoor unit on R410A
H=low water temperature – ambient zone (0~–10°C)
L=low water temperature – ambient zone (–10°C~–20°C)
Split outdoor pair heatpump
■
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/X016
BB
indoor unit.
■
An ERHQ0*
BA
outdoor unit can be connected to an
EKHBH/X016
BB
indoor unit or to an EKHBH/
X016
AA/AB/BA
indoor unit (if a bottom plate heater
Installation manual
1
Cable tie
2
Fluorinated greenhouse gases
label
1
Multilingual fluorinated
greenhouse gases label
1
Screw (M4x12)(for ERLQ only)
1
Thermistor fixing plate
(for ERLQ only, spare)
1
Thermistor fixture
(for ERLQ only)
1
1
1
Accessories
