Configuring the output for the immersion heater
Tab.31
Power supply
Setting the Backup
type (HP029) pa
rameter
Bridge
Backup 1 capacity
(HP034)
Backup 2 capacity
(HP035)
Total output of
back-up 1+2
Single phase
2 Electrical Stages between C2 and
C1
2 kW
4 kW
6 kW
1 Electrical Stage
between C2 and
C1
2 kW
not used
2 kW
Three phase
2 Electrical Stages between C3 and
C2
4 kW
8 kW
12 kW
between C2 and
C1
8 kW
4 kW
12 kW
Remove bridge
4 kW
4 kW
8 kW
1 Electrical Stage
between C2 and
C1
8 kW
not used
8 kW
Remove bridge
4 kW
not used
4 kW
Configure the heat pump parameters
Tab.32
Access
Parameter
Description
Adjustment re
quired
23.5
Air Src Heat
pump >
Parameters,
counters, signals >
Adv. Parameters
Backup type
(HP029)
Type of backup used in the heat pump
1 Electrical Stage
2 Electrical
Stages
Backup 1 capacity
(HP034)
Declaration of the capacity of the 1st stage of the electrical
backup used for the energy counter
0 kW to 10 kW
Backup 2 capacity
(HP035)
Declaration of the capacity of the 2nd stage of the electrical
backup used for the energy counter
0 kW to 10 kW
6.9
Connecting options
1. Connect the options according to the configuration of the installation
to the X12 or X28 connector on the EHC–05 PCB in the indoor
module.
Tab.33 Connecting the options to X28
X28 connector
Description
T dhw 1
Optional: Connection of a second domestic hot
water sensor for domestic hot water tanks with
two sensors. Top sensor.
T dhw 2
Connection of the main domestic hot water
sensor:
for tanks designed with a single sensor,
for domestic hot water tanks with two sen
sors. Bottom sensor.
T out
Not used
Tab.34 Connecting the options to X12
X12 connector
Description
R-Bus terminals
Connection of the Baxi uSense connected ther
mostat, an on/off thermostat (ON/OFF) or a
modulating thermostat.
BL1 IN and BL2 IN Connection of multi-function dry contact inputs
On
Fig.55
MW-1001206-1
R-Bus
T dhw 1
T dhw 2
T out
BL1 IN
BL2 IN
So+ So-
Condensation
X15
X26
X2
X25
X13 X6
X21
X24
X12
X9
X4
X5
X19
X17
X16
X10
X23
X30
X18
X1
X20
EHC-05
X7 X8
X27
X22
}
X28
}
6 Installation
48
7762758 - v05 - 19082020
