309 B/C – 03/03 A – page
19/28
Model: M4AC120CR/150CR Heat Pump version
AC
/DC SUPPLY
ALARM
IND
ICATOR
RETURN AIR TEMP
. SENSOR
ENTERING WATER TEMP
. SENSOR
LEAVING
WATER TEMP
. SENSOR
DEFORST SENSOR 1
DEFROST SENSOR 2
1.
0A
1.
68A
3.
4A
12
.9A
12
.9A
THERMAL OVERLOAD RELAY AMPS
MODE
L
14
.4A
JP SETT
ING
S
14
.4A
3.
4A
OPE
N
is
the aux
ilia
ry e
lectr
ic hea
te
r con
tactor (f
ie
ld supp
ly pa
rt)
If
wan
t t
o ac
tivate
tw
o way va
lve
in
te
rlock
func
tion
, l
et J
P6 open.
Don
't
change
the JP se
tti
ngs and
the va
lue o
f
Fi
el
d
W
iri
ng
1.
0A
NOTES:
CAUT
ION
:
1.
68A
Fac
to
ry
W
ired
The se
tti
ng shown
in
the d
iag
ra
m
is
factory set.
pa
ra
m
et
ers (
inc
lud
ing
the
rm
al
over
load
re
lays)
COMP
. LP S
W
ITCH
COMP
. HP S
W
ITCH
PHASE PROTECTOR
W
ATER PUMP
COMPRESSO
R
DESCR
IPT
IO
N
SYMBOL
SYMBOL
CONTACTOR
FAN MOTOR
DESCR
IPT
IO
N
FOUR
W
AY VALVE
DESCR
IPT
IO
N
SYMBOL
FUSE
????
RELAY