WaterFurnace Envision Hydronic (NSW) - Manual (Page 16)

16
NSW INSTALLATION MANUAL
Wiring Schematics
For all NSW 208/230 volt single-phase units, the circulator
wiring is as shown in the illustrations below. The internal
relay and fusing allow for external pumps no larger than .5
horsepower. The external loop pump connections mentioned
in this manual include a dedicated flow center for each unit
as well as an NSW unit connected to an Envision; “P” or an
“E” series unit containing a microprocessor.
CONTROL BOX
LOAD
CIRCULATOR
PUMP
TRANSFORMER
L
O
W
VO
LTAG
E
TE
RM
IN
A
L
STR
IP
FUSE
BLOCKS
LO
W
V
O
L
T
A
G
E
TH
ERM
O
S
T
AT
CONNE
CT
IONS
COMPRESSOR
CONTACTOR
T1
T2
L1 L2
CAPACITOR
TRANSFORMER
LOW
VOLT
A
G
E
T
E
RM
IN
AL ST
RI
P
FUSE
BLOCKS
LOW V
O
LTA
G
E
T
H
E
R
MO
ST
AT
CONNE
CT
IO
N
S
FLOW CENTER
CONTROL BOX
COMPRESSOR
CONTACTOR
T1
T2
L1 L2
CAPACITOR
Load Circulator Wiring
Dedicated Flow Center Wiring