Shoebox Heat Pump Manual Version 9.4
Page 24 of 40
Sa
fe
ty
in
fo
rma
ti
o
n
G
en
er
al
p
ro
d
u
ct
in
fo
rma
ti
o
n
In
sta
lla
tio
n
In
sta
lla
tio
n
sch
ema
tics
In
sta
lla
tio
n
me
ch
an
ica
l
In
sta
lla
tio
n
ele
ctr
ica
l
Co
mmu
n
al
G
ro
u
n
d
Ar
ra
y
Co
mmi
ss
io
n
in
g
Fa
u
lt
Fin
d
in
g
Wa
rr
an
ty
He
at
P
u
mp
se
tti
n
gs
sh
ee
t
In
tr
o
d
u
ctio
n
Enable Signal connection is supplied with a temporary link across it .
This should be removed after commissioning and connection to the heating control
Heat Pump Enable Signal
No Call 0
-
50V
Call >120V
50V < Call voltages < 120V are not
permitted
4.7.1.2 Main PCB Terminals
DO8 and DO9 must use an external power supply and relay.
Figure 21 Main PCB terminals
*
if the load from the underfloor control is likely to be
near or exceed 2.5A, live should be taken from the out-
put side of the 6A MCB instead
*
E
N
DI1
L
DI4 DI3
E
N
L
DI2
E
N DO5
L
NC
L
NO
L
L
NO
NO
DO5a
DO6
DO8
DO9
D17 D18 D19 0V
0V
T9
E
a
rth
N
e
u
tr
a
l
Liv
e 2
40
V
A
C
,2
.5
A
D
I1
O
n S
ig
na
l
D
I4
2
nd
H
ea
tin
g S
ig
n
a
l
D
I3
C
oo
lin
g S
ig
na
l
E
a
rth
N
e
u
tr
a
l
Liv
e 2
40
V
A
C
,1
A
D
I2
H
o
t W
a
te
r S
ig
n
al
E
a
rth
N
e
u
tr
a
l
D
O
5
P
o
w
e
r o
u
t t
o
H
ot W
a
te
r V
a
lv
e
24
0V
A
C
,1
A
D
O
5a
U
nd
erfl
o
o
r P
um
p
C
u
t O
u
t,(
M
ax
2
4
0V
A
C
,2
.5
A
) n
orm
all
y c
lo
se
d
vo
lt f
re
e r
ela
y
D
O
6 F
au
lt S
ig
na
l, (
Ma
x
24
0V
A
C
,1
A
)
no
rm
all
y o
pe
n v
olt
fre
e r
ela
y
D
O
8 H
ot
W
ate
r Im
m
ers
io
n S
ig
na
l, (
M
ax
24
0V
A
C
,1
A
) n
orm
all
y o
pe
n v
olt
fre
e r
ela
y
D
O
9 C
o
n
fig
u
ra
b
le
R
e
la
y, (
M
a
x
2
4
0
V
A
C
,1
A
) n
orm
all
y o
pe
n v
olt
fre
e r
ela
y
D
I8
P
uls
e I
np
ut
T9
W
e
ath
e
r C
o
m
pe
n
sa
ti
o
n
an
d
0
V
D
I7
P
uls
e I
np
ut
0V
D
I9
P
uls
e I
np
ut
