14 Technical data
Installer reference guide
69
EGSQH10S18AA9W
Daikin Altherma ground source heat pump
4P351748-1D – 2016.02
14.3
Components
14.3.1
Components: Switch box (indoor unit)
X5M
YC
Y1
Y2
Y3
Y4
A9P
A10P
A1P
A8P
A4P
Q1L
K5M
X1M
X2M
X6Y
F1B
X6YA
X6YB
a
n
k
l
i
b
o
j
j
j
r
r
f
e
g
p
p
p
c
d
h
m q
j
s
d
a
Main PCB (water) A1P
b
Backup heater thermal protector Q1L
c
Transformer TR1
d
Backup heater contactors K1M, K2M and K5M
e
Backup heater circuit breaker F1B
f
Connectors X6YA/X6YB/X6Y
g
Terminal block X1M (power supply)
h
Terminal block X2M (high voltage)
i
Terminal block X5M (low voltage)
j
Cable tie mountings
k
Main PCB (refrigerant, brine) A9P
l
Main PCB (inverter) A10P
m
Digital I/O PCB A4P (optional)
n
Demand PCB A8P (optional)
o
Brine pump contactor K6M.
Note:
Only 4 of the 5 connection points
are used.
p
Reactors
q
PCB fuse A1P (FU1)
r
PCB fuse A9P (F1U, F2U)
s
PCB fuse A10P (F1U)