Install Instructions

Fig. 3
1.79
1.79
1.00
.79
2.66
3/4” NPT
DWG# 1179-1
Wiring for Boilers with Honeywell Aquastat Models L8124E or L8148E or Equivalent:
Factory Wiring
L8124E
Male
Connector
Ground
Screw
Factory Wiring
L8148E
Male
Connector
Female
Connector
Ground
Screw
GREEN
YELLOW
YELLOW
WHITE
RED
GREEN
YELLOW
YELLOW
WHITE
RED
Female
Connector
Wiring Instructions
1. Connect the WHITE wire to the Aquastat's TV terminal.
2. Connect the RED wire to the Aquastat's Z terminal.
3. Connect the GREEN wire to a ground source that is
electrically common to the boiler ground.
4. Unplug the factory wired quick connector from terminal
B1.
5. Plug the male quick connector on the YELLOW wire into
the female factory wired quick connector.
6. Plug the female quick connector on the YELLOW wire
into terminal B1.
• Shock hazard. Disconnect power source before servicing. Serious
injury or death could result.
• Only use the wiring harness supplied with the control or factory
supplied alternates. Use of other wire harnesses or insulation types
could result in fi re causing property damage, serious injury, and
death.
Wiring Instructions
1. Connect the WHITE wire to the C terminal.
2. Connect the RED wire to the R terminal.
3. Connect the GREEN wire to a ground source that is
electrically common to the boiler ground.
4. Unplug the factory wired quick connector from the R terminal.
5. Plug the male quick connector on the YELLOW wire into the
female factory wired quick connector.
6. Plug the female quick connector on the yellow wire onto the
R terminal.
Wiring for Boilers with Honeywell Control Center Model R8285 or Equivalent:
Female
Connector
Factory
Wiring
Male
Connector
R8285 or
Equivalent
Ground
Connection
GREEN
YELLOW
RED
WHITE
YELLOW
• Shock hazard. Disconnect power source before servicing. Serious
injury or death could result.
• Only use the wiring harness supplied with the control or factory
supplied alternates. Use of other wire harnesses or insulation types
could result in fi re causing property damage, serious injury, and
death.