14 Technical data
Installer reference guide
75
ERLQ004~008CA + EHVZ04+08S18CB
Daikin Altherma – Low temperature split
4P401676-1 – 2015.02
14.4.4 Components: Switch box (indoor unit)
Q1L
K1M
F1B
TR1
A1P
X5M
X2M
A6P
X1M
A5P
K2M
K3M
X4YA
X2YAX1Y
X6Y
X6YA X6YB
a
b
c
d
p
e
e
f
g
h
i
i
l
j
m
n
o
k
a Backup heater thermal protector Q1L
b Transformer TR1
c Backup heater contactors K1M
d Backup heater circuit breaker F1B
e Connectors X6YA/X6YB/X6Y
f Current loop PCB A6P
g Terminal block X2M (high voltage)
h Terminal block X1M (to outdoor unit)
i 3-way valve relay K2M and K3M
j Extension PCB A5P
k Cable tie mountings
l Digital I/O PCB A4P (only for installations with solar kit or digital I/O
PCB kit)
m Demand PCB for power limitation
n Terminal block X5M (low voltage)
o Main PCB A1P
p PCB fuse FU1