Hydrolevel 24 Series User Manual
Page 2
ᮤ
A1
Connect the hot lead of the input volt-
age (120 VAC, 60 HZ) to terminal H. Connect
the neutral lead to terminal GN.
120 VAC, 60 HZ must be supplied to terminals
H and GN for internal operation of the control.
Connect terminal GN to
A2
ᮣ
ᮣ
burner circuit neutral. Connect terminal P2 to
burner circuit in series with other limit controls.
Consult boiler manufacturer instructions for
proper terminal connections. Control should be
wired in series with and before other circuits.
P1
P2
A
+
0
LIMIT
CONTROLS
BURNER
CIRCUIT
NEUTRAL
HOT
GN
H
ALARM
P1
P2
A
HOT
BURNER
CIRCUIT
NEUTRAL
GN
H
BURNER
POWER
SOURCE
(24 or
120VAC)
P1
P2
A
NEUTRAL
HOT
BURNER
+
0
LIMIT
CONTROLS
GN
H
GN
P1
P2
A
BURNER
POWER
SOURCE
120VAC
H
NEUTRAL
HOT
FACTORY
INSTALLED
JUMPER
H
P1
P2
A
ALARM
GN
P2
A
120VAC
H
NEUTRAL
HOT
P1
P1
P2
A
+
0
LIMIT
CONTROLS
BURNER
CIRCUIT
HOT
NEUTRAL
GN
H
WIRING METHOD A: SAME POWER SOURCE FOR CONTROL AND BURNER CIRCUIT.
ᮤ
B1
WARNING! Remove the jumper
between H and P1. Connect the hot lead of the
input voltage (120 VAC, 60 HZ) to terminal H.
Connect the neutral lead to terminal GN.
120 VAC, 60 HZ must be supplied to terminals
H and GN for internal operation of the control.
Connect hot lead from the 24 VAC
B2
ᮣ
ᮣ
or 120 VAC burner power source to terminal P1.
This terminal supplies power to terminal P2 in
normal operating conditions when water is at
the probe. Connect neutral to burner circuit.
Note: consult boiler manufacturer instructions
for proper terminal connections.
ᮤ
A3
Optional alarm connection. Connect
alarm common to terminal GN. Connect alarm
hot to terminal A.
Upon completion of wiring, replace control
box cover.
ᮤ
B3
Connect terminal P2 to burner
circuit in series with and before other limit con-
trols.
Optional alarm connection. Connect
B4
ᮣ
ᮣ
alarm hot to terminal A. Connect alarm common
to neutral of the burner power source.
Upon completion of wiring, replace control
box cover.
A1
A2
A3
B1
B3
B2
B4
WIRING METHOD B: SEPARATE POWER SOURCE FOR CONTROL AND BURNER CIRCUIT.
WARNING: Be sure to
remove the jumper
between H and P1.