15
ZON
E
1
LINE
24V
Va
c
L
C
R
11
5 Vac
N
L
1
N
115
C
O
M
Va
c
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
RS
X
X
X
X
X
3
2
1
X
NEC Class 2 Low Voltage
ZO
NE
3
ZON
E 2
ZO
NE
1
W
R
NE
C Cl
as
s 2 L
ow V
ol
tag
e
T
T
C
THERM
O
STA
TS
ZONE VALVES
ZON
E
3
ZON
E
2
4
3
2
1
4
3
2
1
4
3
2
1
N
EC
C
las
s 2 L
ow
V
ol
tag
e (
24V
ac)
W
R
T
T
C
W
R
T
T
C
PRI
PU
MP
ZC
/ZR
D
IG
IT
A
L L
C
D
U
SE
R D
IS
PL
A
Y
Fu
se
ZONE MODULE
TO E
X
PA
NS
IO
N
Tr
an
sf
or
m
er
PTC
12
A
25
0V
Do
mes
tic
H
ot
115
Vac
FI
ELD
SU
PPLIE
D
POWE
R
PE
R
NEC
AND
LOCAL
CODES
Water Tank
PRIMARY
PUMP
ZO
NE
TH
ER
M
O
ST
A
TS
ZON
E
V
A
LVE
S
V
A
NN
ES
DE
ZO
NE
4 Wir
e
V
al
ve
3 Wir
e
V
alve
12
3
4
12
3
w/
T-St
at
1
2
3
4
5
6
7
8
91
0
VAC
24
M2
G
*
100, 125 ZONE VALVES, DHW TANK W/T-STAT - WIRING DIAGRAM
10
0
&
1
25
W
ITH
ZONE
VALVES
, DH
W
TANK
,&
TANK
T
-S
TAT
,
ARGO
UZ
3
ZONE
CONTROL
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.
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 ...
