Specifications

g. Install the top part of the hood top using the

6 screws removed in Step 2. See Fig. 12.

h. Install the filter retainer track along the bottom

edge of the outdoor air hood using 4 screws

provided. For filter removal, remove the four

screws holding the filter retainer. The filters can

then be removed, cleaned, or replaced.

15. Secure all wires so that they do not rub any sharp edges or

interfere with any moving parts.

16. Replace the control box cover using the screws saved

from Step 5. Economizer wiring is shown in Fig. 13.

17. Power can now safely be restored to the unit.

18. Install the three mist eliminating filters supplied into the

outdoor air inlet hood.

19. Inspect the unit to make sure all panels are properly

replaced and secured to the unit.

20. Configure the unit for use with economizer.

IMPORTANT: If the return duct opening was covered

prior to installation, remember to remove the covering so

as not to block off the return air to the unit.

RELAYS

ECONOMIZER CONTROL BOARD

ECB-J7

ECB-J2

ECB-J5 ECB-J4

ECB-J9

DIP

SWITCHES

(S1)

Fig. 7 — Economizer Control Board

CEPL130346-01

STATUS

LEN

J10

CCN

YELLOW LED -

CCN (CARRIER COMFORT NETWORK)

INSTANCE JUMPER

RED LED-STATUS

MAIN BASE BOARD

PART NUMBER

GREEN LED-

LEN (LOCAL EQUIPTMENT NETWORK)

Fig. 8 — Main Base Board