Daikin Altherma 3 H HT ECH2O Series - System Filling and Preparation

3 Set-up and installation
Installation manual
28
Daikin Altherma ETS(X/H)(B)-D
Heat pump (indoor unit) with integrated heat accumulator
008.1448499_00 – 06/2019 – EN
[HT/NT contact] = 1 [HT/NT contact] = 0
Fig.3-46 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 respect-
ive 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 →Set-
tings →Inputs/Outputs] is activated (see controller operating instruc-
tions), 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 in-
telligent controller must be connected to the J8 connector, Smart
Grid and EVU connections on the RoCon BM2C PCB (see
Fig. 3-47).
As soon as the Smart Grid function is active, the HT/NT function is
automatically deactivated. Smart grid mode The heat pump is oper-
ated differently depending on the value of the parameter [→Main
menu →Settings →Inputs/Outputs] (see controller operating in-
structions).
Fig.3-47 Connecting the Smart Grid
3.8 Filling the system
Only fill the indoor unit after all installation work is completed in the
order shown below.
3.8.1 Checking the water quality and adjusting
the pressure gauge
1 Comply with the instructions for the water connection (see
Chap. 3.6) and for the water quality.
2 Adjust the mechanical pressure gauge (mounted on site in ac-
cordance with Chap. 3.6.1 or temporarily installed with filling
hose): Turn the pressure gauge glass so that the minimum pres-
sure marking corresponds to the system height +2m (1m wa-
ter column corresponds to 0.1bar).
3.8.2 Filling hot water heat exchangers
1 Open the shut-off valve for the cold water supply pipe.
2 Open the hot water tap connections so that the draw-off volume
can be set as high as possible.
3 Once water has been discharged from the tap connections, do
not interrupt the cold water flow to ensure that the heat ex-
changer will be fully vented and that any impurities or residue
will be discharged.
3.8.3 Filling the storage tank
CAUTION
Filling the storage tank with too high a water pressure or
too high a flow speed can cause damage to the indoor unit.
▪ Only fill with a water pressure <6bar and a flow speed
<15l/min.
Without installed solar system
1 Connect the filling hose with non-return valve (1/2") to the
"Solar inflow" connection (Fig. 3-48, item1).
2 Fill the storage tank of the indoor unit until water escapes from
the overflow connection (Fig. 3-48, item2).
3 Remove the filling hose with non-return valve (1/2").
With installed solar system
1 Install the filling connection with combined filling and draining
valve (accessory KFE BA) following the solar control and pump
unit (EKSRPS4).
2 Connect the filling hose with non-return valve (1/2") to the pre-
viously installed combined filling and draining valve.
3 Fill the storage tank of the indoor unit until water escapes from
the overflow connection (Fig. 3-48, item2).
4 Remove the filling hose with non-return valve (1/2").