ESIE13-02
Wiring Diagrams
37
Part 1 – System Outline
3
1
4
5
For the description of each part number, refer to the table below (note that the options that go together
with the hybrid are the same options as those for Altherma LT):
*: optional
#: field supply
Part number
Description
A1P
Main PCB (hydro)
A2P
User interface PCB
A3P
*
ON/OFF thermostat
A3P
*
Heat pump convector
A3P
*
Solar pumpstation PCB
A4P
*
Digital I/O PCB
A4P
*
Receiver PCB (wireless ON/OFF thermostat, PC= power circuit)
A8P
*
Demand PCB
B1L
Flow sensor
DS1 (A8P)
*
Dipswitch
F1U, F2U
*
Fuse 5 A 250 V for digital I/O PCB (A4P)
FU1
Fuse T 6.3 A 250 V for main PCB (A1P)
K*R
Relay on PCB
M1P
Main water supply pump
M2P
#
Domestic hot water pump
M2S
#
2-way valve for cooling mode
M3S
3-way valve for floor heating / domestic hot water tank
M4S
Bypass valve gas boiler
PHC1
*
Optocoupler input circuit
PS
Switching power supply
Q*DI
#
Earth leakage circuit breaker
R1T (A1P)
Outlet water heat exchanger thermistor
R1T (A2P)
Ambient sensor user interface
R1T (A3P)
*
Ambient sensor ON/OFF thermostat
R2T (A1P)
Outlet gas boiler thermistor
R2T (A4P)
*
External sensor (floor or ambient)
R3T (A1P)
Refrigerant liquid side thermistor
R4T (A1P)
Inlet water thermistor
R5T (A1P)
*
Domestic hot water thermistor
R6T (A1P)
*
External indoor or outdoor ambient thermistor
R1H (A3P)
*
Humidity sensor
S1S
#
Preferential kWh rate PS contact
S2S
#
Electrical meter pulse input
S3S
#
Gas meter pulse input
S6S-S9S
#
Digital power limitation inputs
SS1 (A4P)
*
Selector switch
TR1, TR2
Power supply transformer
X*M
Terminal strip
X*Y
Connector
