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Technical data
Installer reference guide
274
ERGA04~08EA + EHBH/X04+08EF
Daikin Altherma 3 R W
4P629085-1B – 2021.11
K*R (A4P)
Relay on PCB
M2P
# Domestic hot water pump
M2S
# 2-way valve for cooling mode
M3S
* 3-way valve for space heating/domestic hot water
PC (A15P)
* Power circuit
PHC1 (A4P)
* Optocoupler input circuit
Q1L
Thermal protector backup heater
Q4L
# Safety thermostat
Q*DI
# Earth leakage circuit breaker
R1H (A2P)
* Humidity sensor
R1T (A2P)
* Ambient sensor ON/OFF thermostat
R2T (A2P)
* External sensor (floor or ambient)
R5T
* Domestic hot water thermistor
R6T
* External indoor or outdoor ambient thermistor
S1S
# Preferential kWh rate power supply contact
S2S
# Electrical meter pulse input 1
S3S
# Electrical meter pulse input 2
S4S
# Smart Grid feed-in
S6S~S9S
* Digital power limitation inputs
S10S-S11S
# Low voltage Smart Grid contact
SS1 (A4P)
* Selector switch
TR1
Power supply transformer
X6M
# Backup heater power supply terminal strip
X6M
* Booster heater power supply connector
X7M, X8M
* Booster heater power supply terminal strip
X10M
* Smart Grid power supply terminal strip
X*, X*A, X*Y, Y*
Connector
X*M
Terminal strip
*
Optional
#
Field supply
Translation of text on wiring diagram
English
Translation
(1) Main power connection
(1) Main power connection
For HP tariff
For preferential kWh rate power supply
Indoor unit supplied from outdoor
Indoor unit supplied from outdoor
Normal kWh rate power supply
Normal kWh rate power supply
Only for normal power supply
(standard)
Only for normal power supply
(standard)
Summary of Contents for Altherma 3 R W
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