Daikin Altherma 3 R ECH2O Manual De Instalación Y Funcionamiento página 28

3 Set-up and installation
[HT/NT contact] = 1
3‒43 HT/NT contact connection
1 Mains connection box for low rate mains connection
2 Receiver for evaluating the HT/NT control signal
3 Power supply of the heat pump outdoor unit (see
respective installation manual for the heat pump outdoor
unit)
4 Potential-free switching contact for heat pump indoor unit
3.7.15 Connecting an intelligent controller
(Smart Grid - SG)
If the [Smart grid] parameter=1, the function [→ Main menu
→ Settings → Inputs/Outputs] is activated (see controller operating
instructions), the heat pump is switched to normal or a mode with
higher temperatures depending on the utility company signal.
For this purpose, the SG1/SG2 floating switching contacts of the
intelligent controller must be connected to the J8 connector, Smart
Grid and electricity supply company connections on the RoCon
BM2C PCB (see " 3‒44 Connecting the Smart
As soon as the Smart Grid function is active, the HT/NT function is
automatically deactivated. Smart grid mode The heat pump is
operated differently depending on the value of the parameter
[→ Main menu → Settings → Inputs/Outputs] (see controller
operating instructions).
3‒44 Connecting the Smart Grid
Installation and operating manual
28
[HT/NT contact] = 0
3.8
3.8.1
▪ Install lines with bending unit and an adequate clearance to
▪ Only solder with light nitrogen flow (hard soldering only).
▪ Do not apply thermal insulation to connection points until after
▪ Make flared connections and connect to the devices (observe
3.8.2
Grid" [ 4 28]).
Connection for refrigerant
INFORMATION
Follow the installation instructions for the outdoor unit.
Laying refrigerant piping
CAUTION
The use of refrigerant piping that has already been used
may lead to damage to the unit.
▪ Do not reuse refrigerant piping that has been used with
another refrigerant. Replace or carefully clean the
refrigerant piping.
electrical lines.
commissioning (for purposes of leakage search).
tightening torque, see "6.3 Tightening
Pressure test and filling the refrigerant
circuit
WARNING
The overall heat pump system contains refrigerants with
fluorinated greenhouse gases that are harmful to the
environment when released.
Refrigerant type: R32
GWP* value: 675
*GWP = Global Warming Potential
▪ Enter the total filling quantity of refrigerant on the label
supplied on the external heat pump unit (for notes, see
Installation instructions for the heat pump outdoor unit).
▪ Never allow refrigerant to escape into the atmosphere -
always extract and recycle with a suitable recycling
device.
1 Perform pressure test with nitrogen.
▪ Use nitrogen 4.0 or higher.
▪ Maximum 40 bar.
2 After the leak search is complete, completely drain.
3 Vacuum lines.
▪ Pressure to be reached: 1 mbar absolute.
▪ Time: Minimum 1 h
4 Check whether additional refrigerant is needed for primer filling;
fill if necessary.
5 Open the stop valves on the outdoor unit completely until the
stop. Slightly tighten.
6 Reinstall the valve caps.
7 Check that the storage tank temperature sensors are inserted
to a depth of t 80 cm and t
DHW1
torques" [ 4 34]).
60 cm.
DHW2
Daikin Altherma EHS(X/H)(B)-D
Daikin Altherma 3 R ECH₂O
008.1451099_00 – 07/2020