No Control; Installation; Step 1 - Install Volume Control Box; Step 2 - Make Duct Connections - Carrier 35L Series Installation And Start-Up Instructions Manual

• 1514 — Multi-function controller, RA-NO cold inlet,
NO hot inlet
• 1515 — Multi-function controller, RA-NO cold inlet, NC
hot inlet
Constant volume control with cold inlet and discharge air
sensing (35N units):
• 1516 — Multi-function controller, DA-NC cold inlet, NC
hot inlet
• 1517 — Multi-function controller, DA-NC cold inlet,
NO hot inlet
• 1518 — Multi-function controller, DA-NO cold inlet,
NO hot inlet
• 1519 — Multi-function controller, DA-NO cold inlet,
NC hot inlet
• 1520 — Multi-function controller, RA-NC cold inlet, NC
hot inlet
• 1521 — Multi-function controller, RA-NC cold inlet, NO
hot inlet
• 1522 — Multi-function controller, RA-NO cold inlet,
NO hot inlet
• 1523 — Multi-function controller, RA-NO cold inlet, NC
hot inlet
A multi-function controller is capable of providing DA-NO,
DA-NC, RA-NC or RA-NO functions (all units).

No Control

0000: 35L,N box only
D000: 35L,N box with control box only
D001: 35L,N box with control box and transformer

INSTALLATION

Step 1 — Install Volume Control Box
1. Move unit to installation area. Remove unit from ship-
ping package. Do not handle by controls or damper
extension rod.
2. The unit has factory-installed brackets.
3. Suspend units from building structure with straps, rods,
or hanger wires. Secure the unit and level it in each
direction.
Step 2 — Make Duct Connections
1. Install supply ductwork on each of the unit inlet collar.
Check that air-supply duct connections are airtight and
follow all accepted medium-pressure duct installation
procedures. (Refer to Tables 3-5 for pressure data.)
2. Install the discharge ducts. Fully open all balancing
dampers.
A straight length of inlet duct is not required before the unit
inlet. Ninety-degree elbows or tight radius flexible duct im-
mediately upstream of inlet collar should be avoided.
Step 3 — Install Sensors and Make Field Wiring
Connections — Electric Analog or DDC (Direct
Digital Controls)
Refer to specific unit dimensional submittals and control ap-
plication diagrams for control specifications. All field wiring
must comply with National Electrical Code (NEC) and local
requirements. Refer to the wiring diagram on the unit for spe-
cific wiring connections.
A field-supplied transformer is required if the unit was not
equipped with a factory-installed transformer. See Fig. 4.
NOTE: Refer to wiring diagram attached to each unit for specific
information on that particular unit.
Unit airflow should not be set outside of the range noted in
Fig. 4-6 and the performance data section of this document.
4