16
TEM
PE
RA
T
U
R
E
/
T
EM
PÉ
RA
TU
RE
PR
ES
SU
R
E
/
PR
ES
SI
ON
SUPPL
Y
AIR
PURGER
BLEEDING V
A
L
V
E
SAFETY
V
A
L
V
E
ROOM THERMOST
A
T
W
A
TER FEED
PRESSURE
REDUCING V
A
L
V
E
TEMPERA
TURE /
PRESSURE GAUGE
RETURN
EXP
ANSION
TA
N
K
CIRCULA
TING PUMP
MAINTENANCE
VA
LV
E
AUT
OMA
TIC
AIR VENT
LOAD
MANAGEMENT
CONTROL
POWER SUPPL
Y
120V / 1Ø
PUMP
POWER
SUPPL
Y
MAINTENANCE
VA
LV
E
MAINTENANCE
VA
LV
E
DRAIN OR
PURGE V
A
L
V
E
SHUT
-OFF
VA
LV
E
ALL-ELECTRIC INSTALLATION
(Illustration A)
OUTDOOR RESET
SENSOR
ELECTRIC
BOILER
WA
T
E
R
FLOW
DRAIN
CONNECTION
