3 Preparation
Installation manual
6
EBLQ+EDLQ011~W1
Daikin Altherma low temperature monobloc
4P522031-1 – 2018.01
20
2,4
2,1
1,8
1,5
1,2
0,9
1
0,6
0,3
70
120
170
150
105
185
220
270
A
B
A
Pre-pressure (bar)
B
Maximum water volume (l)
Water
Water + glycol
Example: Maximum water volume and expansion vessel pre-
pressure
Installation
height
difference
(a)
Water volume
≤185/105 l
(b)
>185/105 l
(b)
≤7 m
No pre-pressure
adjustment is required.
Do the following:
▪ Decrease
the
pre-
pressure according to
the required installation
height difference. The
pre-pressure
should
decrease by 0.1 bar for
each metre below 7 m.
▪ Check if the water
volume
does
NOT
exceed the maximum
allowed water volume.
>7 m
Do the following:
▪ Increase
the
pre-
pressure according to
the
required
installation
height
difference. The pre-
pressure
should
increase by 0.1 bar for
each metre above 7 m.
▪ Check if the water
volume
does
NOT
exceed the maximum
allowed water volume.
The expansion vessel of
the outdoor unit is too
small for the installation.
In this case, it is
recommended to install
an extra vessel outside
the unit.
(a)
This is the height difference (m) between the highest point
of the water circuit and the outdoor unit. If the outdoor unit
is at the highest point of the installation, the installation
height is 0 m.
(b)
The maximum water volume is 185 l in case the circuit is
only filled with water, and 105 l in case the circuit is filled
with water and glycol.
Minimum flow rate
Check that the minimum flow rate (required during defrost/backup
heater operation) in the installation is guaranteed in all conditions.
NOTICE
If glycol was added to the water circuit, and the
temperature of the water circuit is low, the flow rate will
NOT be displayed on the user interface. In this case, the
minimum flow rate can be checked by way of the pump
test (check that the user interface does NOT display error
7H).
NOTICE
When circulation in each or certain space heating loops is
controlled by remotely controlled valves, it is important that
the minimum flow rate is guaranteed, even if all valves are
closed. In case the minimum flow rate cannot be reached,
a flow error 7H will be generated (no heating or operation).
See the installer reference guide for more information.
Minimum required flow rate
The system contains a backup heater / DHW tank
with recirculation pump / glycol
15 l/min
The system does NOT contain a backup heater /
DHW tank with recirculation pump
(a)
/ glycol
20 l/min
(a)
If an EKHWP tank is installed, no recirculation pump is
required.
See the recommended procedure as described in
"6.2 Checklist
during commissioning" on page 21
.
3.3
Preparing electrical wiring
3.3.1
Overview of electrical connections for
external and internal actuators
Item
Description
Wires
Maximum
running
current
Outdoor unit power supply
1
Power supply for
outdoor unit
2+GND
(a)
2
Normal kWh rate power
supply
2
6.3 A
User interface
3
User interface
2
(b)
Optional equipment
4
Remote outdoor sensor 2
(c)
Field-supplied components
5
Domestic hot water
pump
2
(c)
6
Space heating/cooling
operation control (or
shut‑off valve)
2
(e)
Interconnection cable
7
Interconnection cable
between outdoor unit
and control box
2
(d)
(a)
Refer to name plate on outdoor unit.
(b)
Cable section 0.75 mm² till 1.25 mm²; maximum length:
500 m. Applicable for both single user interface and dual
user interface connection.
(c)
Minimum cable section 0.75 mm².
(d)
Cable section 0.75 mm² till 1.25 mm²; maximum length:
20 m.
(e)
If valve kit EKMBHBP1 is part of the system, then the
required cable section is 0.75 mm². If valve kit EKMBHBP1
is NOT part of the system, then the minimum required
cable section is 0.75 mm².
NOTICE
More technical specifications of the different connections
are indicated on the inside of the outdoor unit.
