Hydrolevel CG400 Series - Manual (Page 2)

MODEL CG400 — ALTERNATE WIRING METHOD USING PLUG CONNECTOR
HOW TO WIRE
Connect input voltage (24 VAC,
60 HZ) to terminals 1 and 2.
BURNER
POWER
SOURCE
24VAC
A P2 P1 1 2
FACTORY
INSTALLED
JUMPER.
DO NOT
REMOVE
BURNER
COMMON
HOT
MODEL CG400
Connect terminal 2 to burner circuit
common. Connect terminal P2 to
burner Circuit in series with and
before other limit controls. Consult
boiler manufacturer instructions for
proper terminal connections. Optional water feeder connection.
Connect feeder N to terminal 2.
Connect Feeder H to terminal 1.
Connect feeder “FEED” or “W” to
terminal A. For water feeders with
2 leads, connect feeder common
to terminal 2 and feeder hot to ter-
minal A. Note: Use of a solenoid
valve or McDonnell & Miller Model
101A water feeder may cause
flooding and is not recommended
for use with this low water cut-off.
Standing pilot boilers: Connect
“Burner” terminal to hot leg of
24VAC connection on gas valve.
Pilotless ignition boilers: Connect
“Burner” terminal to hot leg of
24VAC connection on intermittent
ignition (spark) module.
See boiler manufacturer’s
installation instructions for correct
connection to 24VAC hot.
1
BURNER
POWER
SOURCE
24VAC
+ 0
LIMIT
CONTROLS
A P2 P1 1 2
HOT
COMMON
BURNER
GAS
VALVE*
C
H
2
BURNER
POWER
SOURCE
24VAC
+ 0
LIMIT
CONTROLS
A P2 P1 1 2
GAS
VALVE*
BURNER
GAS
VALVE*
C
H
WATER
FEEDER
3
BURNER
POWER
SOURCE
24VAC
+ 0
LIMIT
CONTROLS
A P2 P1 1 2 BURNER
GAS
VALVE*
H
C
WATER
FEEDER
4
OPTIONAL
ACTIVATION
*or Intermittent Ignition
P2
2
1
A P2 P1 1 2 BURNER
1
A P2 P1 1 2 BURNER
WATER
FEEDER
Plug wire harness connector into matching end on circuit board.
IMPORTANT: Factory installed jumper must be in place between
terminals 1 and P1.
Optional water feeder connection. Connect feeder N to terminal 2.
Connect Feeder H to terminal 1. Connect feeder “FEED” or “W” to ter-
minal A. For water feeders with 2 leads, connect feeder common to
terminal 2 and feeder hot to terminal A. Note: Use of a solenoid valve
or McDonnell & Miller Model 101A water feeder may cause flooding
and is not recommended for use with this low water cut-off.
Standing pilot boilers: Connect “Burner” terminal to hot leg of 24VAC
connection on gas valve.
Pilotless ignition boilers: Connect “Burner” terminal to hot leg of
24VAC connection on intermittent ignition (spark) module.
See boiler manufacturer’s installation instructions for correct
connection to 24VAC hot.
2
A P2 P1 1 2 BURNER
C H
GAS
VALVE*
WATER
FEEDER
3
*or Intermittent Ignition
OPTIONAL
ACTIVATION