Honeywell CP-UL1012S - Controller Replacement (CP-VL4024 NS and CP-VL6438 NS); Controller Replacement (CP-UL1012 S, CP-UL4024 S, and CP-UL6438 S)

COMFORTPOINT PROGRAMMABLE LON, VAV/UNITARY CONTROLLERS
Automation and Control Solutions
Honeywell International Inc. Honeywell Limited-Honeywell Limitée
1985 Douglas Drive North 35 Dynamic Drive
Golden Valley, MN 55422 Toronto, Ontario M1V 4Z9
customer.honeywell.com
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• Loosen the two bolts on the actuator clamp to
release the actuator from the shaft.
• Remove the controller’s mounting screws.
• Gently pull the controller and actuator assembly
straight out, until the assembly is clear of the
actuator shaft.
5. Mount the new controller and actuator assembly (see
“Installation” on page 2).
6. Reconnect the two air flow pickup tubes to the pressure
sensor (see “Piping (CP-VL0000AS, CP-VL4022AS,
CP-VL4024NS, CP-VL6436AS, and CP-VL6438NS)” on
page 5).
7. Replace the terminal blocks:
• Insert each terminal block onto its alignment pins.
• Press straight down to firmly seat it.
• Repeat for each terminal block.
8. Restore power to the controller.
9. Perform checkout.
Controller Replacement (CP-VL4024NS and
CP-VL6438NS)
Perform the following to replace the CP-VL4024NS and
CP-VL6438NS controllers:
1. Remove all power from the controller.
2. Remove the two air flow pickup connections from the
pressure sensor.
3. Remove the terminal blocks.
4. Remove the old controller from its mounting.
IMPORTANT
(FOR CONTROLLERS MOUNTED TO A DIN RAIL):
1. Push straight up from the bottom to release the top
pins.
2. Rotate the top of the controller outwards to release
the bottom flex connectors (see Fig. 8 on page 5).
5. Mount the new controller.
• see “Installation” on page 2
6. Reconnect the two air flow pickup tubes to the pressure
sensor (see “Piping (CP-VL0000AS, CP-VL4022AS,
CP-VL4024NS, CP-VL6436AS, and CP-VL6438NS)” on
page 5).
7. Replace the terminal blocks:
• Insert each terminal block onto its alignment pins.
• Press straight down to firmly seat it.
• Repeat for each terminal block.
8. Restore power to the controller.
9. Perform checkout.
Controller Replacement (CP-UL1012S,
CP-UL4024S, and CP-UL6438S)
Perform the following to replace the CP-UL1012S,
CP-UL4024S, and CP-UL6438S controllers:
1. Remove all power from the controller.
2. Remove the terminal blocks.
3. Remove the old controller from its mounting.
IMPORTANT
(FOR CONTROLLERS MOUNTED TO A DIN RAIL):
1. Push straight up from the bottom to release the top
pins.
2. Rotate the top of the controller outwards to release
the bottom flex connectors (see Fig. 8 on page 5).
4. Mount the new controller (see “Installation” on page 2).
5. Replace the terminal blocks:
• Insert each terminal block onto its alignment pins.
• Press straight down to firmly seat it.
• Repeat for each terminal block.
6. Restore power to the controller.
7. Perform checkout.
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