4
Set-up and installation
Installation and maintenance instructions
28
Daikin Altherma EHS(X/H)
Daikin Altherma integrated solar unit
008.1444099_00 – 07/2018 – EN
Fig. 4-41
Connecting the HP convector (max. 2) to the Daikin
Altherma EHS(X/H)
Fig. 4-42
Connecting the HP convector (min. 3) to the Daikin
Altherma EHS(X/H)
4.7.13
Connecting switching contacts (AUX
outputs)
The switching contacts (AUX outputs) can be used for various para-
metrisable functions.
The A-A1-A2 switchover contact switches under the conditions set in
the [AUX switching function] parameter [→ Main menu → Settings
→ Inputs/Outputs] (see Controller operating instructions).
3
J
&
0
%
QR
&R
5
3
J
&
0
%
QR
&R
5
$8;
%
%
$
$
$
$8;
%
%
$
$
$
L
L
L / +
L / +
N / -
N / -
N
N
250V, max. 63 mA
250V, max. 63 mA
250V, max. 63 mA
250V, max. 63 mA
≤ 15 W
> 15 W
max.1A
max.1A
'& ื9
$&
Fig. 4-43
Connection of switching contact (AUX output)
The relays user for variant 2 (switched output > 15 W) must be suit-
able for a 100 % power-on time.
Connection terminals B+B1 are not occupied for these devices or
are available for additional functions.
The relays user for variant 2 (switched output > 15 W) must be suit-
able for a 100 % power-on time.
Switchover contact A-A1-A2 can be used e.g. to control the heat
generators in bivalent heating systems consisting of a Daikin
Altherma EHS(X/H) and an oil-or gas-fired boiler. Examples of the
integration of the hydraulic system are described in
INFORMATION
When an A2 F or G-plus condensing boiler is connected,
the [AUX switching function] and [AUX time] parameters
must be set according to the required function [→ Main
menu → Settings → Inputs/Outputs].
See Controller operating instructions → chapter Parameter
settings.
Precise information on the electrical connection and the re-
quired parameter settings for such bivalent heating sys-
tems are available on the Internet (www.daikin.com) or
from your service partner.
4.7.14
Off-peak mains connection (HT/NT)
If the outdoor unit is connected to an off-peak mains connection, the
S2S potential-free switching contact of the receiver (which evaluates
the low-tariff input signal output by the electricity supply company)
must be connected to the J8 connector, EVU connection on the Ro-
Con BM2C printed circuit board (see
).
When setting the [HT/NT Function] parameter > 0 [→ Main menu
→ Settings → Inputs/Outputs], certain system components are
switched off at peak tariff times (see Controller operating instruc-
tions).
The following types of off-peak mains connection are common:
▪ Type 1: With this type of off-peak mains connection, the power
supply to the heat pump outdoor unit is not interrupted.
▪ Type 2: With this type of off-peak mains connection, the power
supply to the heat pump outdoor unit is interrupted after a certain
period of time.
▪ Type 3: With this type of off-peak mains connection, the power
supply to the heat pump outdoor unit is interrupted immediately.
Potential-free switching contact S2S can be implemented as a nor-
mally closed or normally open switching contact.
