Check List For Start-Up; Requirements; Commissioning At Low Ambient Temperatures; Bleeding The Hydraulic System - Daikin Altherma 3 R ECH2O EHSX04P30D2 Manuel D'installation Et De Fonctionnement

5

Check list for start-up

INFORMATION
Read chapter "General safety precautions" thoroughly
before carrying out the steps described here.
INFORMATION
If the outdoor unit has been disconnected from the power
supply for an extended period of time or the indoor unit
was operated before the outdoor unit for an extended
period of time, the indoor unit must be restarted to
establish communication between the units. Without
communication, the outdoor unit is not used to generate
heat.
5.1

Requirements

▪ The indoor unit is fully connected.
▪ The refrigerant system is dehumidified and filled with the specified
amount of refrigerant.
▪ The heating and hot water system has been filled and pressurised
to the correct pressure
system" [ 4 29]).
▪ The storage tank is filled up to the overflow (see
tank" [ 4 29]).
storage
▪ Optional accessories have been installed and connected up.
▪ The heating system's control valves are open.
5.2 Commissioning at low ambient
temperatures
At low ambient temperatures, the safety settings of the indoor unit
may prevent heat pump operation. In such cases, an external heat
generator is required to temporarily raise both the storage and return
temperatures of the heating network.
Minimum storage temperatures for heat pump operation:
Ambient temperature <–2°C: 30°C
Ambient temperature <12°C: 23°C
The following steps must be performed:
With electrical backup heater:
1 Parameter [Heating support (HZU)]: "On" select [→ Main menu
→ Settings → ISM]
2 Parameter [Config. ext. heat source]: "Backup heater BUH"
select [→ Main menu → Settings → Ext. source]
3 Parameter [External power hot water]: Select maximum output
of backup heater [→ Main menu → Settings → Ext. source]
4 Parameter [1 x hot water]: "On" select [→ Main menu → User
→ 1x load]
Without electrical backup heater:
1 Parameter [Heating support (HZU)]: "On" select [→ Main menu
→ Settings → ISM]
2 The storage water must be heated to the required minimum
temperature by an external heat generator.
Daikin Altherma EHS(X/H)(B)-D
Daikin Altherma 3 R ECH₂O
008.1451099_00 – 07/2020
(see "3.9.4 Filling the heating
"3.9.3 Filling the
5 Check list for start-up
5.3

Bleeding the hydraulic system

1 Make sure that the automatic vent valve cap is open (item a).
5‒1 Automatic vent valve
a Automatic vent valve cap
2 Provide the manual air purge valve (item a) with a hose and
direct it away from the unit. Open the valve until air no longer
comes out.
3 Fit the second manual air purge valve (item b) with a hose and
open until no more air escapes.
5‒2 Manual air purge valves
a Manual air purge valve
b Second manual air purge valve
4 Activating the ventilation function (see operating instructions
RoCon+ HP1).
By activating the ventilation function, the RoCon+ HP1 controller
starts a permanently defined sequence program with start/stop
operation of the integrated heating circulation pump and various
settings of the 3‑way changeover valves integrated in the indoor unit.
Air present in the hydraulics and the connected heating circuits can
escape via the automatic air purge valve during the venting function.
INFORMATION
The activation of this function does not replace correct
venting of the heating circuit.
The heating circuit must be completely full before
activating this function.
Installation and operating manual
31