12
ZO
NE
1
LINE
24V
V
ac
L
C
R
115
Vac
N
L
1
N
115
C
O
M
V
ac
ZR
ZC
N
L
3
N
L
2
115 Va
c
N
L
1
L
N
ZO
N
E C
IR
C
UL
A
TO
R
X
X
X
X
X
3
2
1
X
NEC Class 2 Low Voltage
ZON
E 3
ZO
N
E 2
ZON
E 1
W
R
NEC
Clas
s
2
Lo
w
V
olt
ag
e
T
T
C
TH
ER
M
O
ST
AT
S
ZO
NE V
A
LVES
ZO
N
E 3
ZONE
2
4
3
2
1
4
3
2
1
4
3
2
1
NEC
C
las
s 2
L
ow Voltag
e (
24Vac)
W
R
T
T
C
W
R
T
T
C
PRI
PUMP
ZC/ZR
DI
GITA
L LC
D USE
R DI
SP
LAY
Fus
e
ZO
N
E M
O
D
UL
E
TO EXPANS
ION
Tr
an
sf
orm
er
PTC
12A
250V
115 Vac FIELD
SUPP
LIE
D
POWER PER N
EC
A
N
D
L
O
C
A
L C
O
D
ES
Z2
Z3
ZONE T-STATS
1
2
3
4
5
6
7
8
91
0
VAC
24
M2
M
2 t
er
m
in
al
s
trip
G
*
on boiler
Domes
tic
Hot
Water Tan
k
10
0
&
1
25
W
/
INDIRECT
ZONE
CIRCULA
TORS
&
DH
W
TANK
W
/T
-S
TAT
,
A
RGO
UZ
3
ZONE
CONTROL
WIRING
DIAGRAM
Reference z
one control
manufacturer instructions for details on setting priorit
y if
necessary
.
If adding an indirect tank with
Thermostat
to a
Heating Only Boiler
, change P03 from 08 to 04.
See Section 9, P
ar
ameter Settings in Boiler
Installation, Oper
ation & Maintenance Manual for
details.
100, 125 W/INDIRECT ZONE CIRCULATORS & DHW TANK W/T-STAT - WIRING DIAGRAM
UZ3
PN 240011430 REV. P [09/15/2021]
Summary of Contents for 100
Page 34: ...34 MODEL 125 Heat Only 125 HEAT ONLY WIRING DIAGRAM PN 240011430 REV P 09 15 2021 ...
Page 35: ...35 MODEL 165 Heat Only 165 HEAT ONLY WIRING DIAGRAM PN 240011430 REV P 09 15 2021 ...
Page 36: ...36 115 COMBI WIRING DIAGRAM MODEL 115 Combi PN 240011430 REV P 09 15 2021 ...
Page 37: ...37 MODEL 150 Combi 150 COMBI WIRING DIAGRAM PN 240011430 REV P 09 15 2021 ...
Page 38: ...38 MODEL 205 Combi 205 COMBI WIRING DIAGRAM PN 240011430 REV P 09 15 2021 ...
Page 43: ...43 Low Water Cutoff Detail LOW WATER CUTOFF NO NO YES PN 240011430 REV P 09 15 2021 ...
Page 48: ...48 3 FAULT SOLUTION SECTIONS PN 240011430 REV P 09 15 2021 ...