Ccn Control Arrangement; Analog Electric Control Arrangement; Direct Digital Electronic Control Arrangement (Field Supplied); Pneumatic Control Arrangement - Carrier 35L Installation And Start-Up Instructions Manual

variety of functions available, circuit diagrams, operating se-
quences, and function descriptions are contained in separate
Application Data publications. Refer to the specific control
publication for details.
CCN Control Arrangement —
packages must be used in combination with a thermostat. Ther-
mostats are not included in the CCN package.
4160: Constant volume dual duct
4170: 35N only, variable volume dual duct, constant minimum
cooling (requires cold deck inlet and total flow probe)
4175: 35N only, variable volume dual duct, cooling close-off
during heating (requires hot deck inlet and total flow probe)
4180: 35N only, constant ventilation dual duct, Cooling only
(requires cold deck inlet and total flow probe)
4190: Variable air volume (VAV) with Demand Control Venti-
lation (DCV) requires separate CO
Analog Electronic Control Arrangement —
trol package is pressure independent and includes a standard
linear airflow sensor in both the hot and cold inlets for variable
air volume control, 24-volt transformer, control enclosures,
and a wall thermostat to match the control type.
Variable volume control:
2400 — Heating and cooling control, hot and cold inlet sensor
location (35L,N)
2440 — Heating and cooling control, hot inlet and discharge
airflow sensing (35N only)
2470 — Heating and cooling control, cold inlet and discharge
airflow sensing (35N only)
Direct Digital Electronic Control Arrangement
(Field Supplied) —
Control packages are field supplied
for factory mounting, unless otherwise noted. All DDC control
arrangements include a standard linear inlet flow sensor,
24-volt transformer and control enclosure.
Contact Carrier for details about mounting field-supplied
controls.
Pneumatic Control Arrangement —
ages are pressure independent and include standard linear
airflow sensors in both the hot and cold inlets for variable air
volume control or an airflow sensor in one inlet and the unit
discharge for constant volume control arrangements. Thermo-
stats will either be direct acting (DA) or reverse acting (RA),
and damper position will be identified as normally open (NO)
or normally closed (NC).
Variable air volume control with inlet air sensing (all units):
1500 — Multi-function controller, DA-NC cold inlet, NC
hot inlet
1501 — Multi-function controller, DA-NC cold inlet, NO
hot inlet
1502 — Multi-function controller, DA-NO cold inlet, NO
hot inlet
1503 — Multi-function controller, DA-NO cold inlet, NC
hot inlet
1504 — Multi-function controller, RA-NC cold inlet, NC
hot inlet
1505 — Multi-function controller, RA-NC cold inlet, NO
hot inlet
1506 — Multi-function controller, RA-NO cold inlet, NO
hot inlet
1507 — Multi-function controller, RA-NO cold inlet, NC
hot inlet
Constant volume control with hot inlet and discharge air
sensing (35N Units):
1508 — Multi-function controller, DA-NC cold inlet, NC
hot inlet
The CCN control
sensor
2
Con-
All control pack-
1509 — Multi-function controller, DA-NC cold inlet, NO
hot inlet
1510 — Multi-function controller, DA-NO cold inlet, NO
hot inlet
1511 — Multi-function controller, DA-NO cold inlet, NC
hot inlet
1512 — Multi-function controller, RA-NC cold inlet, NC
hot inlet
1513 — Multi-function controller, RA-NC cold inlet, NO
hot inlet
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 direc-
tion.
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 imme-
diately upstream of inlet collar should be avoided.
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