Carrier 35L Series Instructions and recipes

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53350001-01 Printed in U.S.A. Form 35L,N-1SI Pg 1 3-06 Replaces: 35L,M,N-1SI
Book 3
Ta b 6 a
Installation and Start-Up Instructions
CONTENTS
Page
SAFETY CONSIDERATIONS ......................1
PRE-INSTALLATION..............................2
General ..........................................2
Warranty .........................................2
CONTROL ARRANGEMENTS................... 2-7
CCN Control Arrangement........................3
Analog Electric Control Arrangement ............ 3
Direct Digital Electronic Control
Arrangement (Field Supplied)...................3
Pneumatic Control Arrangement .................3
No Control .......................................3
INSTALLATION ................................. 3-6
Step 1 — Install Volume Control Box .............3
Step 2 — Make Duct Connections ................ 3
Step 3 — Install Sensors and Make Field
Wiring Connections — Electronic Analog
or DDC (Direct Digital Controls) ................3
CONTROL SET UP ..............................6,7
General ..........................................6
Set Points ........................................6
Field Adjustments of Minimum and
Maximum Airflow Set Points ...................6
System Calibration of the Linear Averaging
Flow Probe..................................... 6
PNEUMATIC CONTROLS ........................7,8
Preparation for Balancing ........................7
Balancing Procedure
(Control Sequences 1500-1523) ................ 7
Preventative Maintenance ........................8
Pneumatic Control Troubleshooting..............8
ANALOG CONTROLS ..........................9,10
Balancing Procedures
(Control Sequences 2400, 2440 and 2470)...... 9
Applications for Dual Duct (Minimum Air
from Cold Duct).................................. 9
Analog Control Troubleshooting ................10
ComfortID™ CONTROLS ..................... 10-18
Install Sensors and Make
Field-Wiring Connections .....................10
• GENERAL
• SUPPLY-AIR TEMPERATURE SENSOR
INSTALLATION
• SPACE TEMPERATURE SENSOR INSTALLATION
AND WIRING
• WIRING THE SPACE TEMPERATURE SENSOR
AND SET POINT ADJUSTMENT SLIDEBAR
• WIRINGTHECCNNETWORKCOMMUNICATION
SERVICE JACK
• PRIMARY AIR TEMPERATURE SENSOR
INSTALLATION
• INDOOR-AIR QUALITY SENSOR INSTALLATION
• INDOOR-AIR QUALITY SENSOR WIRING
• HUMIDITY SENSOR (Wall-Mounted) INSTALLATION
Connect the CCN Communication Bus .......... 15
• COMMUNICATION BUS WIRE SPECIFICATIONS
• CONNECTION TO THE COMMUNICATION BUS
ComfortID Controls Start-Up ....................16
• GENERAL
• PRIMARY SYSTEM CHECK
• COMFORTID CONTROL SYSTEM CHECK
CCN System Start-Up ........................... 17
• COMFORTID TEST AND BALANCE TOOL
SOFTWARE
• COMFORTID CONSTANT VOLUME DUAL DUCT
CONTROL PACKAGE NO. 4160
• COMFORTID VARIABLE AIR VOLUME DUAL
DUCT WITH CONSTANT MINIMUM COLD DECK
AIRFLOW CONTROL PACKAGE NO. 4170
• COMFORTID VARIABLE AIR VOLUME DUAL
DUCTWITHCOLDDECKCLOSE-OFFCONTROL
PACKAGE NO. 4175
• COMFORTID VARIABLE AIR VOLUME DUAL
DUCT WITH CONSTANT VENTILATION CONTROL
PACKAGE NO. 4180
• COMFORTID VARIABLE AIR VOLUME DUAL
DUCT WITH DEMAND CONTROL VENTILATION
CONTROL PACKAGE NO. 4190
SAFETY CONSIDERATIONS
SAFETY NOTE
Air-handling equipment will provide safe and reliable
service when operated within design specifications. The
equipment should be operated and serviced only by autho-
rized personnel who have a thorough knowledge of system
operation, safety devices and emergency procedures.
Good judgement should be used in applying any manu-
facturer’s instructions to avoid injury to personnel or dam-
age to equipment and property.
Disconnect all power to the unit before performing mainte-
nance or service. Unit may automatically start if power is
not disconnected. Electrical shock and personal injury
could result.
35L,N Dual Duct Terminal Units
Variable Volume System

2
PRE-INSTALLATION
General — The 35L,N units are dual duct terminals avail-
able with factory-installed pneumatic, analog, and Carrier
ComfortNetwork®(CCN)DirectDigitalControl(DDC)
control options. See Table 1. Figure 1 shows the basic box.
Figure 2 is an example of a unit identification label.
Table 1 — 35L,N Units
STORAGE AND HANDLING — Inspect for damage upon
receipt. Shipping damage claims should be filed with shipper
at time of delivery. Store in a clean, dry, and covered location.
Do not stack cartons. When unpacking units, care should be
taken that the inlet collars and externally mounted components
do not become damaged. Do not lift units using collars, sensors
or externally mounted components as handles. Do not lay
uncrated units on end or sides. Do not stack uncrated units over
6 ft high. Do not manhandle. Do not handle control boxes by
tubing connections or other external attachments. Table 2
shows component weights.
INITIAL INSPECTION — Once items have been removed
from the carton, check carefully for damage to duct connec-
tions, coils or controls. File damage claim immediately with
transportation agency and notify Carrier.
UNIT IDENTIFICATION — Each unit is supplied with a
shipping label and an identification label (Fig. 2).
INSTALLATION PRECAUTION — Check that construction
debris does not enter unit or ductwork. Do not operate the
central-station air-handling fan without final or construction
filters in place. Accumulated dust and construction debris
distributed through the ductwork can adversely affect unit
operation.
SERVICE ACCESS — Provide service clearance for unit
access.
CODES — Install units in compliance with all applicable code
requirements.
Table 2 — 35L,N Unit Weights
LEGEND
DDC — Direct Digital Controls
NOTE: Data is based on the following conditions:
1. Unit casing is 22 gage.
2. Unit insulation is 1/2-in. thick, 1.5-lb Tuf-Skin Rx™ dual density
fiberglass.
3. Units rated with standard linear flow sensor.
Warranty — All Carrier-furnished items carry the standard
Carrier warranty.
CONTROL ARRANGEMENTS
The 35L,N dual duct units are offered with a wide variety of
factory-mounted controls that regulate the volume of air deliv-
ery from the unit and respond to cooling and heating load
requirements of the conditioned space. Stand-alone controls
will fulfill the thermal requirements of a given control space.
These devices are available in both pneumatic and electronic
arrangements. Carrier PIC (Product Integrated Controls) is a
communicating control that is integrated with the building sys-
tem. The PIC controls are compatible with the CCN system. A
number of DDC (Direct Digital Controls) control packages by
others are available for consignment mounting, as indicated.
Control offerings are:
35(L,N)A: Analog Electronic
35(L,N)C: CCN Direct Digital Electronic
35(L,N)P: Pneumatic
35(L,N)N: None or DDC by others
Each control approach offers a variety of operating func-
tions; a control package number identifies combinations of
control functions. The following listings contain the basic
function arrangements for each control offering. Because of the
UNIT DESCRIPTION
35L Basic unit, no mixing
35N Premium unit, high mixing, constant volume flow sensing
UNIT SIZE
BASE
UNIT
(lb)
WITH
PNEUMATIC
CONTROLS
(lb)
WITH DDC OR
ANALOG CONTROLS
(lb)
35L
4, 5, 6 29 37 47
7, 8 33 41 51
9, 10 41 49 59
12 51 59 69
14 67 75 85
16 75 83 93
22 129 137 147
35N
631 39 49
842 50 60
10 61 69 79
12 80 88 98
14 98 106 116
16 111 119 129
UP
FACTORY NO: 832889 ITEM: 003
MODEL NO: 35LN 06
COLD INLET CFM:
HOT INLET CFM:
HAND (COLD INLET LOC):
MIN
0
RC
SIZE: C=06 H=06
MAX
VP:
VP:
MAX
.000
.000
MIN
.000
.000
D000 CTRL BOX E
CFGCD: 1A*0*0*0R*0606*D000*00*000*0000
ODS: 2181487
TAG:
Fig. 2 — Unit Identification Label
Fig. 1 — 35L Dual Duct Box

3
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 — The CCN control
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 CO2sensor
Analog Electronic Control Arrangement — Con-
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 — All control pack-
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
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.

4
Step 3 — Install Sensors and Make Field Wiring
Connections — Electric Analog or DDC (Direct
Digital Controls) — Refer to specific unit dimensional
submittals and control application diagrams for control specifi-
cations. All field wiring must comply with National Electrical
Code (NEC) and local requirements. Refer to the wiring diagram
on the unit for specific wiring connections.
A field-supplied transformer is required if the unit was not
equipped with a factory-installed transformer. See Fig. 3.
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. 4A-4C and the performance data section of this document.
Table 3 — 35L Non-Mixing Dual Duct Basic Pressure Data
*CCN (Carrier Comfort Network®) controls permit a lower minimum
flow.
NOTES:
1. ∆ Psis the difference in static pressure across the assembly,
with the damper fully open.
2. To obtain Total Pressure, add the Velocity Pressure for a
givenCFMtotheStaticPressuredrop(∆ Ps) of the desired
configuration.
INLET
SIZE
(in.)
CFM MINIMUM AIRFLOW
(CFM)*
MINIMUM CCN
AIRFLOW (CFM)
MINIMUM INLET STATIC PRESSURE
(Unit Pressure Drop) (in. wg) MINIMUM SYSTEM OPERATING
PRESSURE (in. wg) AT
MAXIMUM LISTED FLOW RATE
Velocity
Pressure
Basic
Unit
∆ VPS ∆ PS
4
(0.09)
50 40
or
0
23
or
0
0.02 0.00
0.03
110 0.10 0.01
170 0.23 0.02
230 0.43 0.03
5
(0.14)
75 63
or
0
36
or
0
0.02 0.00
0.08
170 0.09 0.02
265 0.23 0.04
360 0.43 0.08
6
(0.20)
100 90
or
0
52
or
0
0.02 0.01
0.17
240 0.09 0.04
380 0.22 0.09
520 0.42 0.17
7
(0.27)
150 123
or
0
71
or
0
0.02 0.01
0.17
330 0.09 0.04
525 0.23 0.09
710 0.41 0.17
8
(0.35)
200 160
or
0
93
or
0
0.02 0.01
0.18
440 0.09 0.04
675 0.21 0.09
925 0.39 0.17
9
(0.44)
250 203
or
0
117
or
0
0.02 0.01
0.31
550 0.08 0.07
875 0.21 0.17
1200 0.40 0.32
10
(0.55)
300 251
or
0
145
or
0
0.02 0.01
0.17
675 0.08 0.04
1075 0.20 0.10
1450 0.36 0.17
12
(0.78)
450 361
or
0
208
or
0
0.02 0.01
0.17
1000 0.08 0.04
1550 0.19 0.09
2100 0.34 0.17
14
(1.07)
600 491
or
0
284
or
0
0.01 0.01
0.18
1375 0.07 0.04
2125 0.17 0.10
2900 0.31 0.19
16
(1.40)
800 642
or
0
371
or
0
0.01 0.01
0.18
1775 0.06 0.04
2725 0.14 0.10
3700 0.25 0.17
22
(2.63)
1200 1211
or
0
699
or
0
0.02 0.01
0.17
3300 0.07 0.04
5200 0.16 0.09
7000 0.31 0.17

5
Table 4 — 35N Dual Duct, Full Blending Basic Pressure Data — Inlet Sensor Pickup
*Assumes inlet flow sensor. For discharge flow sensor, use data for
next even size. CCN (Carrier Comfort Network®) controls permit a
lower minimum flow. Size 16 discharge is same as inlet.
NOTES:
1. ∆Psis the difference in static pressure across the assembly,
with the damper fully open.
2. Minimum recommended airflow (cfm) is based on 0.03 in. wg
differential pressure on the inlet sensor or 0 airflow. 0.03 in. wg
is equal to 15-20% of the nominal flow rating of the terminal
unit. Less than 15-20% may result in greater than ±5% control
of the unit airflow. Some DDC controls, supplied by others, may
have different limitations.
3. Minimum airflow may be 0.
4. Maximumairflow(cfm)isbasedona1in.wgdifferential
pressure from the airflow sensor.
5. To obtain Total Pressure, add the Velocity Pressure for a
givenCFMtotheStaticPressuredrop(∆Ps) of the desired
configuration.
Table 5 — 35N Dual Duct, Full Blending — Discharge Sensor Pickup
CCN — Carrier Comfort Network
INLET
SIZE
(Area)
CFM MINIMUM AIRFLOW
(CFM)
MINIMUM CCN
AIRFLOW (CFM)
MINIMUM INLET STATIC PRESSURE
(Unit Pressure Drop) (in. wg) MINIMUM SYSTEM OPERATING
PRESSURE (in. wg) AT
MAXIMUM LISTED FLOW RATE
Velocity
Pressure
Basic
Unit
∆ VPS ∆ PS
6
(0.20)
100 90
or
0
52
or
0
0.01 0.03
0.42
240 0.06 0.16
380 0.15 0.40
520 0.28 0.72
8
(0.35)
200 160
or
0
93
or
0
0.01 0.03
0.44
440 0.06 0.15
675 0.14 0.36
925 0.26 0.68
10
(0.55)
300 251
or
0
145
or
0
0.01 0.04
0.43
675 0.05 0.20
1075 0.14 0.52
1450 0.25 0.94
12
(0.78)
450 361
or
0
208
or
0
0.01 0.04
0.43
1000 0.04 0.18
1550 0.09 0.44
2100 0.16 0.80
14
(1.07)
600 491
or
0
284
or
0
0.01 0.04
0.48
1375 0.04 0.23
2125 0.09 0.54
2900 0.17 1.01
16
(1.40)
800 642
or
0
371
or
0
0.00 0.04
0.48
1775 0.02 0.19
2725 0.04 0.44
3700 0.08 0.81
INLET
SIZE
MAX. PRIMARY
AIRFLOW (cfm)
MINIMUM AIRFLOW
Standard CCN
6927 185 or 0 93 or 0
81448 290 or 0 145 or 0
10 2085 417 or 0 208 or 0
12 2838 568 or 0 284 or 0
14 3706 741 or 0 371 or 0
16

6
CONTROL SET UP
General — The 35L,N dual duct terminals are designed to
maintain optimum temperatures in the conditioned zone by
varying the air volume supplied by the hot and cold ducts while
providing the proper discharge air temperature.
To balance the unit it is necessary to set both the maximum
and minimum set points of the controllers. Many types of con-
trol options are available, each have specific procedures re-
quired for balancing the unit.
Set Points — Maximum and minimum airflow set points
are normally specified for the job and specific for each unit on
the job. Where maximum and minimum airflow levels are not
specified on the order, default values are noted on unit ID label.
Field Adjustment of Minimum and Maximum
Airflow Set Points — Each unit is equipped with a flow
probe which measures a differential pressure proportional to
the airflow. The relationship between flow probe pressures and
cfm is shown in the Flow Probe Chart (Fig. 4A-4C). This chart
is attached to each unit.
System Calibration of the Linear Averaging
Flow Probe — To achieve accurate pressure independent
operation, the velocity sensor and linear averaging flow probe
must be calibrated to the controller. This will ensure that air-
flow measurements will be accurate for all terminals at system
start-up.
System calibration is accomplished by calculating a flow
coefficient that adjusts the pressure fpm characteristics. The
flow coefficient is determined by dividing the flow for a given
unit (design air volume in cfm), at a pressure of 1.0 in. wg
differential pressure, by the standard pitot tube coefficient of
4005. This ratio is the same for all sizes if the standard linear
averaging probe is used.
Determine the design air velocity by dividing the design air
volume (the flow at 1.0 in. wg) by the nominal inlet area
(sq ft). This factor is the K factor.
ANALOG OR DDC
CONTROLLER
24VAC
BLU
YEL
CLASS II
TRANSFORMER
(OPTIONAL)
120VAC
208VAC
240VAC
277VAC
L1
GROUND
24 VAC
POWER
927
37093709
1449
2086
2840
6 "
8 "
10 "
12 "
10
100
1000
10000
Flow
Constant
CFM AT ONE INCH SIGNAL
CFM
FLOW PROBE PRESSURE DIFFERENTIAL IN.WG
VOLTS (ANALOG CONTROLS)
0.01 0.1 1
Largest
Inlet Size
14-16"
LEGEND
NOTE: Drawing is typical — refer to actual unit wiring diagram for
details.
Fig. 3 — Wiring of Optional Factory-Mounted
Transformer
DDC — Direct Digital Controls
Field Wiring
Factory Wiring
NOTE: Size 16 discharge is same as inlet.
Fig. 4A — Dual Duct Outlet Flow Probe Chart
(35N only)
CFM AT ONE INCH SIGNAL
CFM
522
927
1449
2086
2840
10
100
1000
10000
3665
0.01 0.1 1
16 inch
14 inch
12 inch
10 inch
8 inch
6 inch
FLOW PROBE PRESSURE DIFFERENTIAL IN.WG
VOLTS (ANALOG CONTROLS)
NOTE: Size 16 discharge is same as inlet.
Fig. 4B — Dual Duct Inlet Flow Probe Chart
(35N only)

7
Carrier inlet areas are shown in Table 6. The design air
volume is shown in this table. It can be determined from this
table that the average design air velocity for those units is equal
to 2656 fpm at 1.0-in. wg.
Table 6 — Inlet Areas
.
*35L units only.
NOTE: For Carrier ComfortID™ terminals, all flow sizes are normal-
ized using a single Probe Multiplier (PMF) for all sizes equal to
2.273.
PNEUMATIC CONTROLS
All control packages are pressure independent and include
standard linear airflow sensors in both the hot and cold inlets
for variable air volume control (control sequence 1500 to 1507)
or an airflow sensor in one inlet and unit discharge for constant
volume control arrangements (control sequence 1508 to 1523).
Preparation for Balancing
1. Inspect all pneumatic connections to assure tight fit and
proper location.
2. Verify that the thermostat being used is compatible with
the control sequence provided (direct acting or reverse
acting).
3. Check main air pressure at the controller(s). The main air
pressure must be between 15 psi and 25 psi. (If dual or
switched-main air pressure is used, check the pressure at
both high and low settings.) The difference between
“high” pressure main and “low” pressure main should be
at least 4 psi, unless otherwise noted, and the “low” set-
ting difference should exceed 15 psi.
4. Check that the unit damper will fail to the proper position
when main air pressure is lost. Disconnect the pneumatic
actuator line from the velocity controller and observe the
VAV damper position. The damper should fail to either a
normally open position (indicator mark on shaft end is
horizontal) or a normally closed position (indicator mark
on shaft end is vertical).
5. Check that there is primary airflow in the inlet duct.
6. Connect a Magnehelic gage, inclined manometer or other
differential pressure measuring device to the balancing
taps provided in the velocity probe sensor lines. The
manometer should have a full scale reading of 0.0 to
1.0 in. wg. The high pressure signal is delivered from the
front sensor tap (away from the valve), and the low pres-
sure signal is delivered from the back line (near the
valve). The pressure differential between high and low
represents the amplified velocity pressure in the inlet
duct.
7. Read the differential pressure and enter the Flow Probe
Chart to determine the airflow in the terminal unit. This
chartisshowninFig.4A-4Candisalsoattachedtothe
side of each unit. For example, a differential pressure of
0.10 in. wg for a size 8 unit yields an airflow of 275 cfm.
Volume controller for units is shown in Fig. 5.
Balancing Procedure (Control Sequences
1500-1523)
1. Damper action is factory set at NO (normally open), or
NC (normally closed). To reselect loosen damper selec-
tion switch screw and align pointer with damper pointer
and tighten screw. The spring range of the actuator is not
critical since the controller will output the necessary pres-
sure to the actuator to position the damper according to
set point. (See Fig. 5.)
2. Pipe the controller: Connect port “B” to the damper actu-
ator. Connect port “M” to the clean, dry main air. Connect
port “T” to the thermostat output. Connect port “H” to the
total pressure tap on the airflow sensor. Connect port “L”
to the static pressure tap on the airflow sensor.
The controller can be set up for cooling or heating applications
using either a direct acting (DA) or reverse acting (RA) ther-
mostat signal. The two flow adjustments are labeled “LO
STAT ∆P” and “HI STAT ∆P. ”
35L,N UNIT SIZE 04* 05* 06 07* 08 09*
INLET
DIAMETER 4.0 5.0 6.0 7.0 8.0 9.0
CFM AT 1 IN. WG 232 362 502 710 927 1174
INLET AREA
(sq ft) 0.087 0.136 0.196 0.267 0.349 0.442
35L,NUNITSIZE1012141622*
INLET DIAMETER 10.0 12.0 14.0 16.0 16 x 24
CFM AT 1 IN. WG 1449 2086 2840 3709 7250
INLET AREA
(sq ft) 0.545 0.785 1.069 1.396 2.640
10000
8000
6000
4000
2000
1000
800
600
400
200
100
80
60
40
20
10
0.01 .03 .05 0.1 0.3 0.5 1
710
522
362
232
2086
1449
1174
927
3709
2840
7250
FLOW PROBE PRESSURE DIFFERENTIAL IN. WG
CFM
CFM AT ONE INCH SIGNAL
SIZE 4
SIZE 5
SIZE 6
SIZE 7
SIZE 8
SIZE 9
SIZE 10
SIZE 12
SIZE 14
SIZE 16
SIZE 22
NOTE: Size 22 available on 35L units only.
Fig. 4C — Dual Duct Inlet Flow Probe Chart
(35L only)
T
HL
B
M
NO
NC
G
RESET START
LO S TAT ∆P
RESET SPAN
HI STAT∆P
DAMPER
I
N
C
R
I
N
C
R
TO DAMPER
ACTUATOR
TO MAIN AIR
SUPPLY
DIFFERENTIAL PRESSURE (FLOW)
LIMIT ADJUSTMENT WHEN T’STAT
PRESSURE IS HIGH (HI STAT)
(FACTORY SET AT 0.65 IN. WG.)†
†- FIELD ADJUSTMENT REQUIRED
DIFFERENTIAL PRESSURE (FLOW)
LIMIT ADJUSTMENT WHEN T’STAT
PRESSURE IS LOW (LO STAT)
(FACTORY SET AT 0 IN. WG.)†
ALL ADJUSTMENTS CCW TO INCREASE
(1/8”-5/32”FLATBLADE SCREWDRIVER)
RESET SPAN ADJUSTMENT
(FACTORY SET AT 5 PSI)
DAMPER ACTION SELECTION
(FACTORY SET AT NORMALLY OPEN)
NOTE: SCREW MUST BE TIGHT AND ARROWS
IN PERFECT ALIGNMENT FOR DEVICE TO FUNCTION PROPERLY.
LOOSEN SCREW TO
CHANGE DAMPER ACTION
(SUPPLIED IN N.O. POSITION)
GAGE TAP. LEAVE CAP ON UNLESS
CONNECTING GAGE FOR RESET
START OR RESET SPAN ADJUSTMENT
PUSH ON NIPPLES
FOR 3/16”(5) I.D.
FR TUBING (5)
* TO STATIC PRESSURE
TO TOTAL PRESSURE
*(DIFFERENCE IS: DIFFERENTIAL
PRESSURE, OR DEVICE
VELOCITY PRESSURE)
RESET START POINT ADJUSTMENT
(FACTORY SET AT 8 PSI)
TO THERMOSTAT BRANCH SIGNAL
(RESET SIGNAL)
Fig. 5 — CSC-3011 Controller

8
LO STAT ∆Psetting is the desired airflow limit when the
thermostat pressure is less than, or equal to, the reset start
point.
• For DA Cooling or RA Heating:
Adjust LO STAT ∆P to the desired minimum airflow
with 0 psig (or a pressure less than the reset start point) at
port “T.” The LO STAT ∆P must be set first. The LO
STAT ∆P will affect the HI STAT ∆P setting.
• For RA Cooling or DA Heating:
Adjust LO STAT ∆P to the desired maximum airflow
with 0 psig (or a pressure less than the reset start point) at
port “T.” The LO STAT ∆P must be set first. The LO
STAT ∆P will affect the HI STAT ∆P setting.
HI STAT ∆Psetting is the desired airflow limit when the ther-
mostat pressure is greater than, or equal to, the reset stop-point.
The reset stop-point is the reset span pressure added to the
reset start-point pressure.
• For DA Cooling or RA Heating (see Fig. 6):
Adjust HI STAT ∆P to the desired maximum airflow with
20 psig (or a pressure greater than the reset stop point) at
port “T.” The HI STAT ∆Pmustbesetlast.TheHISTAT
∆P setting will be affected by the LO STAT ∆P setting.
• For RA Cooling or DA Heating (see Fig. 6):
Adjust HI STAT ∆P to the desired minimum airflow with
20 psig (or a pressure greater than the reset stop point) at
port “T.” The HI STAT ∆Pmustbesetlast.TheHISTAT
∆P setting will be affected by the LO STAT ∆P setting.
NOTE: After the “LO STAT ∆P” and “HI STAT ∆P” initial
adjustments are made, cycle the thermostat pressure a few
times to settle the internal reset mechanisms and verify set-
tings. Fine tune the settings if necessary. The thermostat pres-
sure may be left at a high pressure and the “G” port cap may be
removed and replaced to cycle the reset mechanism.
RESET START setting is factory set at 8.0 psig. This is the
lowest thermostat pressure that the LO STAT ∆P airflow will
begin to reset towards the HI STAT ∆P airflow. To change the
RESET START setting; regulate thermostat pressure to the “T”
port to the desired reset start point pressure, adjust RESET
START adjustment until pressure at the “G” port is slightly
higher than 0 psig, i.e., 0.1 psig.
NOTE: The “G” port taps into the controller’s internal reset
chamber, which always starts at 0 psig. The RESET START
adjustment is a positive bias adjustment that sets the desired
thermostat start point to the controller’s internal reset start
point of 0 psig.
RESET SPAN setting is factory set at 5.0 psig. This is the
required change in thermostat pressure that the controller will
reset between the LO STAT ∆P setting and the HI STAT ∆P
setting. To change the RESET SPAN setting; adjust RESET
SPAN adjustment until pressure at the “G” port equals the
desired reset span pressure.
NOTE: The “G” port taps into the controller’s internal reset
chamber, which will always be at a pressure between 0 psig
and the RESET SPAN pressure.
Preventative Maintenance
1. Inspect pneumatic tubing for loose connections or leaks.
2. Clean out pneumatic line filters regularly according to
manufacturer’s recommendations.
Pneumatic Control Troubleshooting — See Table 7.
Table 7 — Troubleshooting
NOTE: Always check:
• Main air pressure (15 psi to 25 psi) at the controller.
• Disconnected or kinked pneumatic lines to the controller.
•Quality of compressed air (oil or water in lines).
• Proper thermostat signal and logic (Direct/Reverse Acting).
• Blocked velocity probe or insufficient primary supply air.
• Leaks in the actuator diaphragm.
• Mechanical linkage of the actuator/air valve.
PROBLEM PROBABLE CAUSE
Controller does not reset to maximum or minimum set point during bal-
ance procedure.
Balancer is using the thermostat for control signal. An artificial signal
must be provided in place of the thermostat.
Controller does not reset to maximum or minimum set point during
operation.
Thermostat is not demanding maximum or minimum air volume. Main
air pressure at the controller is less than 15 psi.
Pneumatic actuator does not stroke fully. Leak in pneumatic line between the controller and the actuator. Main air
pressure at the controller is less than 15 psi. Leak in the diaphragm.
Air valve stays in wide open position. Velocity probe is blocked by an obstruction (sandwich bag, etc.). Insuffi-
cient supply air in the inlet duct.
MAX
MIN
F
L
O
W
03
813 psig
LO STAT ∆P
HI STAT ∆P
ROOM TEMPERATURE
DA HEATING
Reset
Span
Reset Start*
∆
LO STAT ∆P
MAX
MIN
F
L
O
W
13 8 30 psig
HI STAT ∆P
ROOM TEMPERATURE
RA HEATING
Reset
Span
Reset Start
∆
MAX
MIN
F
L
O
W
13 830 psig
LO STAT ∆P
HI STAT ∆P
ROOM TEMPERATURE
RA COOLING
Reset
Span
Reset Start*
∆
MAX
MIN
F
L
O
W
03
813 psig
HI STAT ∆P
LO STAT ∆P
ROOM TEMPERATURE
DA COOLING
Reset
Span
Reset Start
∆
*May require changing the RESET START from 8.0 to 3.0 psig if
sequencing is involved.
Fig. 6 — Reset Cycle for CSC-3011 Control

9
ANALOG CONTROLS
Balancing Procedures (Control Sequences
2400, 2440, 2470) — The analog electronic control
system is a pressure independent volume reset control that uses
KMC Controls CSP-5001 controller-actuator. See Fig. 7.
The system provides for independently adjustable set points
for minimum, maximum, and auxiliary airflow limits.
Room temperature control is provided by the associated
room thermostat which is selected according to the application.
The room thermostat provides a fixed 2 degrees F reset span re-
gardless of the minimum and maximum velocity limit set
points.
Adjustments for the minimum and maximum airflows are
made at the thermostat.
The thermostat (CTE-5100 Series) operates on a 16 vdc
power supply from the CSP controller and outputs a 0 to
10 vdc signal on the T terminals; T1in the cooling mode (DA
[direct acting]) and T2in the heating mode (RA [reverse
acting]). See the reference sequence diagram on unit for details
on which ‘T’ terminals are used on each model thermostat, but
in general T1and T3are used for the cooling mode, T2and T4
for heating. Terminals T1and T2are adjustable to limit mini-
mum and maximum flow. Terminals T3and T4have a fixed
0 to 10 vdc output signal.
1. Required tools:
a. 1/16 in. hex/key wrench
b. Smallflatblade(
1/8in.) screwdriver
c. Digital voltmeter capable of displaying a 0 to
10 vdc range which will display in hundredths of
vdc
d. HSO-5001 Test Leads (optional for meter taps)
2. Remove thermostat cover.
Thermostat cover is removed by loosening the setscrews
on each side of the thermostat. Using a 1/6in. hex/key
wrench turn the setscrews clockwise until cover is loose.
3. Check voltages.
Verify 16 vdc between (+) and (–) terminals.
Applications for Dual Duct (Minimum Air From
Cold Duct) — Dual duct applications are easily accom-
plished by connecting two CSP-5001 Series controllers with a
dual set point (RA/DA) thermostat, as shown in Fig. 8. In this
application the CSP controllers are mounted separately on the
cold and hot deck dampers with each utilizing its own flow
sensor. The cold deck utilizes the T1signal from the thermostat
while the hot deck controller receives its requested flow signal
from T2. Both units can be set independently for minimum and
maximum flow settings. In addition, by using the “R” override
terminal on the thermostat cold deck, minimum flow can be
overrided to zero upon a call for heating (or vice-versa). See
Fig. 9 and 10.
HEATING MAX
T2 T1
HEATING MIN
COOLING MAX
COOLING MIN
RISE IN ROOM TEMPERATURE
HTG. S.P. CLG. S.P.
HEATING MAX T2 T1
HEATING MIN
COOLING MAX
COOLING MIN
RISE IN ROOM TEMPERATURE
HTG. S.P. CLG. S.P.
Fig. 10 — Minimum Air From Heating
Fig. 8 — Dual Control Connections
Fig. 9 — Minimum Air From Cooling
Minimum Air From Cooling*
Minimum Air From Heating*
*Connect jumper from T2 to R1 to override cooling minimum to zero, upon
call for heating. Leave R2 connected to ground.
*Connect jumperfromT1toR2tooverrideheatingminimumtozero,upon
call for heating. Leave R1 connected to ground.
ccw cw
E
C
RED-CLS
GRN-OPN
LED
METER
24V
AC
–+
I
N
NOR
MAX
MIN
N
O
M
M
A
X
%
M
I
N
˜
–
–
16
V
DC
O
U
I
H
L
45
90
0
∆PPORTS
GEAR
DISENGAGEMENT
BUTTON
ADJUSTABLE
END STOPS
0-10V VELOCITY OUTPUT
0-10V INPUT SIGNAL
16V DC OUTPUT
(THERMOSTAT POWER)
COMMON (16V DC,
INPUT, OUTPUT)
POWER
SUPPLY
16
V
DC
I
NO
U
T
24 V
AC
WIRING
––˜
Fig. 7 — CSP-5001 Controller

10
Analog Control Troubleshooting — The follow-
ing troubleshooting guide is directed towards single duct cool-
ing applications, the same concepts can be applied to other
configurations.
CONTROLLER
1. Verify 24 vac at terminals “~” (phase) and “-” (ground).
Tolerance can be –15% to +20% (20.4 to 28.8 vac).
2. Verify 16 vdc at terminals “16 VDC” and “-”.
a. Tolerance is 15.0 to 17.0 vdc power supply to
thermostat.
b. If not correct, disconnect thermostat and recheck.
If still incorrect, replace CSP controller.
3. Check requested flow voltage on terminal “IN” and “-”.
a. Use charts on pages 6 and 7, Fig. 4A-4C to corre-
late into cubic feet per minute (cfm).
b. If reading is not what is desired, see the System
Calibration of the Linear Averaging Flow Probe
section to adjust thermostat.
4. Check actual flow voltage on terminal “OUT” and “-”
(for 0 to 10 vdc).
Use charts on pages 6 and 7, Fig. 4A-4C to correlate into
cfm.
5. Check box movement, damper rotation, etc.
a. Review requested flow and actual flow parameters
above to determine if unit should be satisfied
(within 50 fpm) or driving open or closed.
b. If damper is not moving, verify damper is not stuck
or at end of travel. Check rotation jumpers for
proper position.
c. Change requested flow to make unit drive opposite
direction. This can be accomplished by moving the
set point sliders or 1) and 2) below.
1.) To manually open the box, remove wiring from
terminal “IN” and jumper terminal “IN” to ter-
minal “16VDC”. This will tell unit to control at
3300 fpm/full airflow, and the green LED
should turn on (and the box should drive open).
2.) To manually close the box, remove wiring from
terminal “IN”, jumper and “IN” terminal to “-”
terminal.Thiswilltellunittocontrolatzero
fpm/no airflow, and the red LED should be on
(and the box should drive closed).
NOTE: When using the same transformer for more than one
control, the phase and ground must be consistent with each
device.
ComfortID™ CONTROLS
Install Sensors and Make Field Wiring
Connections
GENERAL — All field wiring must comply with National
Electrical Code (NEC) and local requirements. Refer to
Tables 8-11 for electrical and wiring specifications.
For information on how to test and balance CCN controls,
refer to the 33ZC Installation and Operation Instructions.
Wire the control as shown on the control package diagram
for the specific installation. Control wiring diagrams can be
found inside the control box.
SUPPLY-AIR TEMPERATURE (SAT) SENSOR INSTAL-
LATION — On terminals with heat, the SAT sensor is provid-
ed. The sensor is factory wired to the controlled and shipped in
the control box. The SAT must be field-installed in the duct
downstream from the air terminal. The SAT sensor part num-
ber is 33ZCSENSAT. See Table 8 for resistance information.
To install the sensor, proceed as follows:
1. Remove the plug from one of the 7/8-in. openings in the
control box and pass the sensor probe through the hole.
2. Drill or punch a 1/2-in. hole in the duct downstream of
the unit, at a location meeting the requirements shown in
Fig. 11.
3. Using 2 self-drilling screws (supplied), secure the sensor
probe to the duct.
The SAT sensor probe is 6 inches in length. The tip of the
probe must not touch the inside of the duct. Use field-supplied
bushings as spacers when mounting the probe in a duct that is
6 in. or less in diameter.
If the unit is a cooling only unit, the SAT sensor is not pro-
vided and is not required.
For units with hot and cold airstreams, locate SAT sensor
probe at least 2 ft downstream (see Fig. 11).
Perform the following steps if state or local code requires
the use of conduit, or if your installation requires a cable length
of more than 8 ft:
1. Disconnect the sensor cable from the ComfortID zone
controller, at the terminals labeled SAT and GND.
2. Mount the sensor to the duct (see steps 2 and 3 above).
3. Mount a field-supplied 4-in. x 4-in. x 20-in. extension
box over the duct sensor.
4. Connect a conduit (1/2-in. nominal) to the zone controller
enclosure and extension box.
5. Pass the sensor probe through the extension box opening
and into the conduit.
6. Reconnect the sensor leads to the zone controller labeled
SAT and GND.
Never jumper terminal 16 VDC to “-” as this would cause
a short, and possibly damage the power supply.
Disconnect electrical power before wiring inside the con-
troller. Electrical shock, personal injury, or damage to the
zone controller can result.
DO NOT run sensor or relay wires in the same conduit or
raceway with Class 1 service wiring.
DO NOT abrade or nick the outer jacket of cable.
DO NOT pull or draw cable with a force that may harm the
physical or electrical properties.
DO NOT bend a cable through a radius sharper than that
recommended by its manufacturer.
AVOID splices in any control wiring.
LEAVING
AIR
HEATED
AIR
COOL
AIR
2 FT. MIN.
SAT
ZC
Fig. 11 — Supply Air Temperature Probe
(Part No. 33ZCSENSAT) Locations
LEGEND
SAT — Supply Air Temperature Sensor
ZC — Zone Controller

11
Table 8 — Thermistor Resistance vs Temperature Values for
Supply-Air Temperature Sensor, Primary Air Temperature Sensor and Space Temperature Sensor
SPACE TEMPERATURE SENSOR INSTALLATION AND
WIRING — The SPT sensor accessory is ordered separately
for field installation. It is installed on interior walls to measure
room space air temperature. See Fig. 12-16 and Table 8.
The wall plate accommodates both the NEMA (National
Electrical Manufacturing Association) standard and the Euro-
pean 1/4DIN standard. The use of a junction box to accommo-
date the wiring is recommended for installation. The sensor
may be mounted directly on the wall, if acceptable by local
codes.
DO NOT mount the sensor in drafty areas such as near heat-
ing or air-conditioning ducts, open windows, fans, or over heat
sources such as baseboard heaters or radiators. Sensors mount-
ed in those areas will produce inaccurate readings.
Avoid corner locations. Allow at least 3 ft between the sen-
sor and any corner. Air in corners tends to be stagnant resulting
in inaccurate sensor readings.
Sensor should be mounted approximately 5 ft up from the
floor, in an area that best represents the average temperature
found in the space (zone).
The space temperature sensor cover includes a service jack
connector. If wiring connection is made to the service jack, the
connector can then be used to connect a network service tool
with the Carrier Comfort Network® system.
Before installing the space temperature sensor, decide
whether or not the service jack wiring connection will be made.
If connection is desired, the CCN communication cable should
be available at time of sensor installation, for convenient wir-
ing connections. The cable selected must meet the require-
ments for the entire network. See page 15 for CCN communi-
cation cable specifications.
Install and wire the space temperature sensor as follows:
NOTE: Space temperature sensor will be identified as T55 or
T56. Refer to Control Sequence drawings to determine which
SPT is part of the particular control package being installed.
(The difference between T55 and T56 is that T56 includes set
point adjustment capability.)
1. Locate the two Allen type screws at the bottom of the
sensor.
2. Turn the two screws clockwise to release the cover from
the sensor wall mounting plate.
3. Lift the cover from the bottom and then release it from
the top fasteners.
4. Feed the wires from the electrical box through the open-
ing in the center of the sensor mounting plate.
5. Usingtwono.6-32x1mounting screws (provided with
the sensor), secure the sensor to the electrical box.
6. Use 20 gage wire to connect the sensor to the controller.
This size is suitable for distances of up to 500 ft. Use a
three-conductor shielded cable for the sensor and set
point adjustment connections. The standard CCN com-
munication cable may be used. If the set point adjustment
(slide-bar) is not required, then an unshielded, 18 or 20
gage, two-conductor, twisted pair cable may be used. Re-
fer to Table 9.
The CCN network service jack requires a separate,
shielded CCN communication cable. Always use sepa-
rate cables for CCN communication and sensor wiring.
(Refer to Fig. 15 and 16 for wire terminations.)
7. Replace the cover by inserting the cover at the top of the
mounting plate first, then swing the cover down over the
lower portion. Rotate the two Allen head screws counter-
clockwise until the cover is secured to the mounting plate
and locked in position.
8. For more sensor information, see Table 8 for thermistor
resistance vs temperature values.
NOTE: Clean sensor with damp cloth only. Do not use
solvents.
Table 9 — Recommended Sensor and Device
Wiring
NOTE: Wiring is 20 gage, 2 conductor twisted cable.
WIRING THE SPACE TEMPERATURE SENSOR AND
SET POINT ADJUSTMENT SLIDEBAR — To wire the sen-
sor and slidebar, perform the following (see Fig. 15 and 16):
1. Identify which cable is for the sensor wiring.
2. Strip back the jacket from the cables for at least 3 inches.
Strip 1/4-in. of insulation from each conductor. Cut the
shield and drain wire from the sensor end of the cable.
RESISTANCE
(Ohms)
TEMP
(F)
RESISTANCE
(Ohms)
TEMP
(F)
RESISTANCE
(Ohms)
TEMP
(F)
RESISTANCE
(Ohms)
TEMP
(F)
RESISTANCE
(Ohms)
TEMP
(F)
29481 32 17050 54 10227 76 6340 98 4051 120
28732 33 16646 55 10000 77 6209 99 3972 121
28005 34 16253 56 9779 78 6080 100 3895 122
27298 35 15870 57 9563 79 5954 101 3819 123
26611 36 15497 58 9353 80 5832 102 3745 124
25943 37 15134 59 9148 81 5712 103 3673 125
25295 38 14780 60 8948 82 5595 104 3603 126
24664 39 14436 61 8754 83 5481 105 3533 127
24051 40 14101 62 8563 84 5369 106 3466 128
23456 41 13775 63 8378 85 5260 107 3400 129
22877 42 13457 64 8197 86 5154 108 3335 130
22313 43 13148 65 8021 87 5050 109 3272 131
21766 44 12846 66 7849 88 4948 110 3210 132
21234 45 12553 67 7681 89 4849 111 3150 133
20716 46 12267 68 7517 90 4752 112 3090 134
20212 47 11988 69 7357 91 4657 113 3033 135
19722 48 11717 70 7201 92 4564 114 2976 136
19246 49 11452 71 7049 93 4474 115 2920 137
18782 50 11194 72 6900 94 4385 116 2866 138
18332 51 10943 73 6755 95 4299 117 2813 139
17893 52 10698 74 6613 96 4214 118 2761 140
17466 53 10459 75 6475 97 4132 119
MANUFACTURER PART NUMBER
Regular Plenum
Belden 8205 88442
Columbia D6451 —
American A21501 A48301
Quabik 6130 —
Alpha 1895 —
Manhattan M13402 M64430

12
D
5’
3’(MIN)
OR
2/3 OF WALL HEIGHT
Fig. 12 — Typical Space Temperature Sensor
Room Location
Warm
Cool
Fig. 13 — Space Temperature Sensor
(P/N 33ZCT56SPT Shown)
NOTE: Dimensions are in inches.
Fig. 14 — Space Temperature Sensor and Wall
Mounted Humidity Sensor Mounting
2345 61
SW1
SEN
BLK (GND)
RED (SPT)
RED(+)
WHT(GND)
BLK(-) CCN COM
SENSOR WIRING
Fig. 15 — Space Temperature Sensor Wiring
(33ZCT55SPT)
2345 61
SW1
SEN SET
Cool Warm
WHT
(T56)
BLK (GND)
RED (SPT)
RED(+)
WHT(GND)
BLK(-) CCN COM
SENSOR WIRING
JUMPER
TERMINALS
AS SHOWN
Fig. 16 — Space Temperature Sensor Wiring
(33ZCT56SPT)

13
3. Connect the sensor cable as follows:
a. Connect one wire from the cable (RED) to the SPT
terminal on the controller. Connect the other end of
the wire to the left terminal on the SEN terminal
block of the sensor.
b. Connect another wire from the cable (BLACK) to
the ground terminal on the controller. Connect the
other end of the wire to the remaining open termi-
nal on the SEN terminal block.
c. For T56 sensors, connect the remaining wire
(WHITE/CLR) to the T56 terminal on the control-
ler. Connect the other end of the wire to the right
most terminal on the SET terminal block.
d. In the control box, connect the cable shield to
J1-3, equipment ground.
e. Install a jumper between the two center T56 termi-
nals (right SEN and left SET).
WIRING THE CCN NETWORK COMMUNICATION
SERVICE JACK — To wire the service jack, perform the
following:
1. Strip back the jacket from the CCN communication ca-
ble(s) for at least 3 inches. Strip 1/4in. of insulation from
each conductor. Remove the shield and separate the drain
wire from the cable. Twist together all the shield drain
wires and fasten them together using an closed end crimp
lug or a wire nut. Tape off any exposed bare wire to pre-
vent shorting.
2. Connect the CCN + signal wire(s) (RED) to Terminal 5.
3. Connect the CCN – signal wire(s) (BLACK) to Terminal 2.
4. Connect the CCN GND signal wire(s) (WHITE/CLR) to
Terminal 4.
PRIMARY AIR TEMPERATURE SENSOR INSTALLA-
TION — A primary air temperature (PAT) sensor is used on a
zone controller which is functioning as a Linkage Coordinator
for a non-CCN (Carrier Comfort Network®)/Linkage compati-
ble air source. The part number is 33ZCSENPAT. See Fig. 17.
The sensor is also available as field-supplied accessory.
When used on a zone controller, try to select a zone control-
ler which will allow installation of the PAT sensor in the main
trunk, as close to the air source as possible. See Fig. 18.
To mount the PAT sensor, remove sensor cover.
1. Drill a 1/2-in. hole in supply duct.
2. Using field-supplied drill tap screw, secure sensor to duct.
3. Connect sensor to zone controller using field-supplied
2-conductor cable. Refer to Table 9.
4. Use field-supplied wire nuts to connect cable to sensor.
5. At zone controller, connect sensor wires to PAT and GND
terminals.
INDOOR-AIR QUALITY SENSOR INSTALLATION —
The indoor-air quality (IAQ) sensor accessory monitors carbon
dioxide levels. This information is used to increase the airflow
to the zone and may also modify the position of the outdoor-air
dampers to admit more outdoor air as required to provide the
desired ventilation rate. The wall sensor is used to monitor the
conditioned space. The sensor uses infrared technology to
measure the levels of CO2present in the air. The wall sensor is
available with or without an LCD readout to display the CO2
level in ppm and is also available in a combination model
whichsensesbothtemperatureandCO
2level.
The CO2sensors are factory set for a range of 0 to
2000 ppm and a linear voltage output of 0 to 10 vdc. Refer to
the instructions supplied with the CO2sensor for electrical re-
quirements and terminal locations. The sensor requires a sepa-
rate field-supplied 24 vac 25 va transformer to provide power
to the sensor. The transformer may be mounted in the control
box if space is provided (except electric heat units).
For factory configuration changes to some models of the
sensor, the User Interface Program (UIP) or Sensor Calibration
Service Kit is required.
To accurately monitor the quality of the air in the condi-
tioned air space, locate the sensor near the return air grille so it
senses the concentration of CO2leaving the space. The sensor
should be mounted in a location to avoid direct breath contact.
Do not mount the space sensor in drafty areas such as near
supply diffusers, open window, fans, or over heat sources. Al-
low at least 3 ft between the sensor and any corner. Avoid
mounting the sensor where it is influenced by the supply air;
the sensor gives inaccurate readings if the supply air is blown
directly onto the sensor.
To mount the sensor, refer to the installation instructions
shipped with the accessory kit.
INDOOR AIR QUALITY SENSOR WIRING — To wire the
sensor after it is mounted in the conditioned air space, see
Fig. 19-21 and the instructions shipped with the sensor. Use
Fig. 17 — Primary Air Temperature Sensor
(Part Number 33ZCSENPAT)
Fig. 18 — Primary Air Temperature
Sensor Installation
(Air-Handling Unit Discharge Locations)

14
two 2-conductor 20 AWG twisted-pair cables (see Table 9) to
connect the field-supplied separate isolated 24 vac power
source to the sensor and to connect the sensor to the control
terminals. To connect the sensor to the control, identify the
positive (+) and ground (GND) terminals on the sensor and
connect the positive terminal to the RH/IAQ terminal on the
control and connect the ground terminal to terminal GND.
HUMIDITY SENSOR (Wall-Mounted) INSTALLA-
TION — The accessory space humidity sensor is field sup-
plied and installed on an interior wall to measure the relative
humidity of the air within the occupied space. See Fig. 22.
Theuseofastandard2x4-in.electricalboxtoaccommo-
date the wiring is recommended for installation. The sensor can
be mounted directly on the wall, if acceptable by local codes.
If the sensor is installed directly on a wall surface, install the
humidity sensor using 2 screws and 2 hollow wall anchors
(field-supplied); do not overtighten screws.
The sensor must be mounted vertically on the wall. The
Carrier logo should be oriented correctly when the sensor is
properly mounted.
DO NOT mount the sensor in drafty areas such as near heat-
ing or air-conditioning ducts, open windows, fans, or over heat
sources such as baseboard heaters, radiators, or wall-mounted
light dimmers. Sensors mounted in those areas will produce
inaccurate readings.
Avoid corner locations. Allow at least 4 ft between the sen-
sor and any corner. Airflow near corners tends to be reduced,
resulting in erratic sensor readings.
Sensor should be vertically mounted approximately 5 ft up
from the floor, beside the space temperature sensor.
For distances up to 500 feet, use a 3-conductor, 18 or
20 AWG cable. A CCN communication cable can be used,
although the shield is not required. The shield must be removed
from both ends of the cable if this cable is used.
Do NOT clean or touch the sensing element with chemical
solvents; they can permanently damage the sensor.
Fig. 20 — Ventilation Rates Based on
CO2Set Point
Fig. 19 — Indoor Air Quality Sensor
(Wall-Mounted Version Shown) 33ZCSENCO2
35 in-lb (4 Nm)
80...110s
HF23BJ042
Made in Switzerland
by Belimo Automation
1
0
yel blu ora
WIP
5K
LISTED
94D5
TEMP. IND. &
REG. EQUIP.
UL
Class 2 Supply
LR 92800
NEMA 2
24VAC/DC
50/60Hz
3VA 2W
COM
123
blk red wht
LINE VOLTAGE
24VAC
SEPARATE
POWER
SUPPLY
REQUIRED*
IAQ
GND
21 87
*Do not connect to the same transformer that supplies power to the zone controller.
Fig. 21 — Indoor Air Quality Sensor Wiring

15
The power for the sensor is provided by the control board.
The board provides 24 vdc for the sensor. No additional power
source is required.
To wire the sensor, perform the following:
1. At the sensor, remove 4-in. of jacket from the cable. Strip
1/4-in. of insulation from each conductor. Route the cable
through the wire clearance opening in the center of the
sensor. See Fig. 23.
2. Connect the RED wire to the sensor screw terminal
marked (+).
3. Install one lead from the resistor (supplied with the sen-
sor) and the WHITE wire, into the sensor screw terminal
marked (–). After tightening the screw terminal, test the
connection by pulling gently on the resistor lead.
4. Connect the remaining lead from the resistor to the
BLACK wire and secure using a field-supplied closed
end type crimp connector or wire nut.
5. Using electrical tape, insulate any exposed resistor lead to
prevent shorting.
6. At the control box, remove the jacket from the cable.
7. Strip 1/4-in. of insulation from each conductor.
8. Connect the RED wire to terminal +24v on the control
board.
9. Connect the BLACK wire to terminal GND on the con-
trol board.
10. Connect the WHITE/CLEAR wire to terminal RH/IAQ
on the control board.
Connect the CCN Communication Bus — The
zone controllers connect to the bus in a daisy chain arrange-
ment. The zone controller may be installed on a primary CCN
bus or on a secondary bus from the primary CCN bus.
Connecting to a secondary bus is recommended.
At 9,600 baud, the number of controllers is limited to
128 zones maximum, with a limit of 8 systems (Linkage
Coordinator configured for at least 2 zones.) Bus length may
not exceed 4000 ft, with no more than 60 devices on any
1000-ft section. Optically isolated RS-485 repeaters are
required every 1000 ft.
At 19,200 and 38,400 baud, the number of controllers
is limited to 128 maximum, with no limit on the number of
Linkage Coordinators. Bus length may not exceed 1000 ft.
The first zone controller in a network connects directly to
the bridge and the others are wired sequentially in a daisy chain
fashion.
The CCN communication bus also connects to the zone
controller space temperature sensor. Refer to Step 3 of the in-
stallation section for sensor wiring instructions.
COMMUNICATION BUS WIRE SPECIFICATIONS —
The Carrier Comfort Network (CCN) Communication Bus
wiring is field-supplied and field-installed. It consists of
shielded three-conductor cable with drain (ground) wire. The
cable selected must be identical to the CCN communication
bus wire used for the entire network. See Table 10 for recom-
mended cable.
Table 10 — Recommended Cables
NOTE: Conductors and drain wire must be at least 20 AWG
(American Wire Gage), stranded, and tinned copper. Individual con-
ductors must be insulated with PVC, PVC/nylon, vinyl, Teflon, or
polyethylene. An aluminum/polyester 100% foil shield and an outer
jacket of PVC, PVC/nylon, chrome vinyl, or Teflon with a minimum
operating temperature range of –20 Cto60 C is required.
CONNECTION TO THE COMMUNICATION BUS
1. Strip the ends of the red, white, and black conductors
of the communication bus cable.
2. Connect one end of the communication bus cable to
the bridge communication port labeled COMM2 (if
connecting on a secondary bus).
When connecting the communication bus cable, a
color code system for the entire network is recom-
mended to simplify installation and checkout. See
Table 11 for the recommended color code.
3. Refer to Fig. 23. Connect the other end of the communi-
cation bus cable to the terminal block labeled CCN in the
zone controller of the first air terminal. Following the col-
or code in Table 11, connect the Red (+) wire to Terminal
1. Connect the White (ground) wire to Terminal 2. Con-
nect the Black (–) wire to Terminal 3.
4. Connect additional zone controllers in a daisy chain
fashion, following the color coded wiring scheme in
Table 11.
Table 11 — Color Code Recommendations
NOTE: The communication bus drain wires (shield) must
be tied together at each zone controller. If the communica-
tion bus is entirely within one building, the resulting contin-
uous shield must be connected to ground at only one single
point. If the communication bus cable exits from one build-
ing and enters another building, connect the shields to
ground at a lightning suppressor in each building where the
cable enters or exits (one point only).
MANUFACTURER CABLE PART NO.
Alpha 2413 or 5463
American A22503
Belden 8772
Columbia 02525
SIGNAL TYPE CCN BUS WIRE
COLOR
PLUG PIN
NUMBER
+Red 1
Ground White 2
–Black 3
Fig. 22 — Wall Mounted Relative Humidity Sensor
(P/N 33AMSENRHS000)

16
ComfortID™ Controls Start-Up
GENERAL — Air volume delivery to the conditioned space
is controlled by the modulating of the primary air damper and
the sequencing of the air source supply fan. The controller po-
sitions the damper by way of an actuator and turns the fan on
and off through linkage for the CCN compatible air source
equipment control.
PRIMARY SYSTEM CHECK
1. Check that all controls, control box, and ductwork have
been properly installed and set according to installation
instructions and job requirements.
2. Check that final filters have been installed in the air-
handling apparatus. Dust and debris can adversely affect
system operation.
3. Check fan and system controls for proper operation.
4. Check electrical system connections.
5. Check that all air duct connections are tight.
6. See that all balancing dampers at box outlets are in full-
open position.
ComfortID CONTROL SYSTEM CHECK
1. Check interconnections between thermostats and unit
controls.
2. Force all dampers to control to the maximum cooling cfm
using the Building Supervisor, ComfortWORKS®,
Network Service Tool or ComfortID Test and Balance
Tool software.
3. Set supply-duct balancing dampers, if used, in maximum
cool position.
4. Check that the static pressure available at each box is
above the minimum required, force all dampers to control
to the minimum cooling cfm and verify that the static
pressure is below the maximum safe operating limits
when the damper is providing minimum cooling airflow.
5. Set air source supply fan speed and duct static pressure
regulator to obtain satisfactory static pressure at design
airflow.
6. While at peak system load, check system operation and
pressures.
7. Check duct pressure at various points in the system. If sys-
tem static pressure probe has been properly located, pres-
sure at last units of all branch headers should remain essen-
tially the same. If pressure has changed considerably, re-
check the supply air static pressure controller or relocate
the probe to better sense system pressure changes.
8. Remove all forces and balance each control box zone
using through the balancing procedure described on
page 9.
HF23BJ042
Made in Switzerland
by Belimo Automation
LR 92800
NEMA 2
Class 2 Supply
LISTED
94D5
TENP IND &
REG. EQUIP.
24VAC/DC
50/60 Hz
3VA 2W
5K
WIP
yel blu ora blk red wht
COM
123
35 in-lb (4 Nm)
80...110s
01
J4
RH/IAQ
GND
SECFLOW
+10V
DMPPOS
GND
TEST
GND
+24V
SPT
GND
SAT
T56
GND
PAT
N/A
J3
J1
SRVC
24VAC
+
G-
HIGH
Part Number: 33ZCFANTRM
S/N:
Bus#:
Element#:
Unit#:
J6
CCW COM CW HEAT1 24VAC HEAT2
ZONE Controller
®
®
CUS
LOW
16
31
+
G
-
J2A CCN
LEN
J2B
+
G
-
1
1
1
3
3
2
15
16
FAN AC
FAN
24VAC
N/A
HEAT3
J7 J6
1
12
3
CW
COM
CCW
J8
SEC DMP
1
3
CCN
COMMUNICATION
CONNECTOR
RED (+)
WHITE (GND)
BLACK (–)
CCN
HUMIDITY SENSOR
BLACK
WHITE
RED
(If Used)
Shield
-
+
499
Fig. 23 — Zone Controller Connections

17
CCN System Start-Up — The Building Supervisor,
ComfortWORKS®, and the Network Service Tool can aid in
system start-up and troubleshooting.
All set-up and set point configurations are factory set and
field adjustable. Changes are made by using either Building
Supervisor, ComfortWORKS or the Network Service Tool.
TheNetworkServiceToolcanbeusedasaportabledeviceto
change system set-up and set points from a zone sensor or ter-
minal control module. During start-up, the Building Supervisor
ortheNetworkServiceToolcanalsobeusedtoverifycommu-
nication with each controller.
For specific operating instructions, refer to the appropriate
user manual.
COMFORTID TEST AND BALANCE TOOL SOFT-
WARE — The ComfortID Test and Balance Tool software is
used for testing each controller if the Network Service Tool or
CCN are not available. The ComfortID Test and Balance Tool
is compatible with Windows95 and higher and Windows NT4
(with Service Pack Level 3 or better) operating systems.
This software is used for control calibration. It allows for
various functions that expedite system checks and testing.
Carrier requires the use of the B&B485CARLP9A Port
Powered RS232 to RS485 Converter for proper operation.
NOTE: The B&B485CARLP9A Port Powered RS232 to
RS485 Converter is available through:
B&B Electronics
1500 Boyce Memorial Drive
P.O. Box 1040
Ottawa, IL 61350
Refer to the ComfortID Test and Balance Tool Software Instal-
lation and Operation Instructions for additional information.
COMFORTID CONSTANT VOLUME DUAL DUCT
CONTROL PACKAGE NO. 4160 — Dual duct units are
designed to provide accurate temperature control while main-
taining a constant airflow to the space. A typical application is
shown in Fig. 24. Use package no. 4160 with 35L,N units.
COMFORTID VARIABLE AIR VOLUME DUAL DUCT
WITH CONSTANT MINIMUM COLD DECK AIRFLOW
CONTROL PACKAGE NO. 4170 — Dual duct units are
designed to provide accurate variable air volume (VAV) tem-
perature control in both heating and cooling modes with a min-
imum amount of energy consumption. Typically system used
with this control package provide all the ventilation air though
the cold deck only. This control package provides VAV cooling
operation and VAV heating with variable air temperature. The
control will maintain the minimum cooling airflow set point
during heating to provide the required ventilation to the space.
A typical application is shown in Fig. 25. Use package
no. 4170 with 35N units.
COMFORTID VARIABLE AIR VOLUME DUAL DUCT
WITH COLD DECK CLOSE-OFF CONTROL PACKAGE
NO. 4175 — Dual duct units are designed to provide accurate
variable air volume (VAV) temperature control in both heating
and cooling modes with a minimum amount of energy
consumption. A typical system used with this control package
provides ventilation air though both the hot and cold decks.
This control package provides VAV cooling operation and
variable air temperature heating. It will reduce the cold deck
(cooling) airflow to zero during maximum heating to eliminate
energy waste. A typical application is shown in Fig. 26. Use
package No. 4175 with 35N units.
SLAVE
CONTROLLER
DAMPER
ACTUATOR
HEATED AIR
COOL AIR
ZONE
CONTROLLER
CCN BUS
24 VAC
LEAVING
AIR
OPTIONAL
SUPPLY
AIR SENSOR
SPACE
TEMPERATURE
SENSOR
DAMPER
ACTUATOR
Fig. 24 — Constant Volume Dual Duct Control
HEAT
ACTUATOR
DAMPER
ACTUATOR
HEATED AIR
COOL AIR
ZONE
CONTROLLER
CCN BUS
24 VAC
LEAVING
AIR
SUPPLY
AIR SENSOR
SPACE
TEMPERATURE
SENSOR
DAMPER
ACTUATOR
Fig. 25 — VAV Dual Duct with Constant Minimum
Cold Deck Airflow Control

18
COMFORTID VARIABLE AIR VOLUME DUAL DUCT
WITH CONSTANT VENTILATION CONTROL PACK-
AGE NO. 4180 — Dual duct units are designed to provide
accurate variable air volume (VAV) temperature control with a
minimum amount of energy consumption. A typical system
used with this control package provides all the ventilation air
though a separate outside air system. The ventilation air is con-
ditioned (heated/cooled/dehumidified) as required to provide a
neutral temperature. The ventilation air is connected to the hot
deck inlet of the terminal. The control package provides VAV
cooling operation and constant volume ventilation. It will
maintain the ventilation airflow set point at all times to provide
the required ventilation to the space. Field supplied and
installed perimeter or ducted heating may additionally be con-
trolled. A typical application is shown in Fig. 27. Use package
no. 4180 with 35N units.
COMFORTID VARIABLE AIR VOLUME DUAL DUCT
WITH DEMAND CONTROLLED VENTILATION CON-
TROL PACKAGE NO. 4190 — Dual duct units are designed
to provide accurate variable air volume (VAV) temperature
control with a minimum amount of energy consumption. A
typical system used with this control package provides all the
ventilation air though a separate outside air system. The venti-
lation air is conditioned (heated/cooled/dehumidified) as
required to provide a neutral temperature. The ventilation air is
connected to the hot deck inlet of the terminal. The control
package provides VAV cooling operation and demand con-
trolled ventilation. It will adjust the ventilation to maintain the
required ventilation rate when occupied and maintain at least
the minimum base ventilation rate at all times. Field supplied
and installed perimeter or ducted heating may additionally be
controlled. A typical application is shown in Fig. 28. Use pack-
age no. 4190 with 35L,N units.
HEAT
ACTUATOR
DAMPER
ACTUATOR
HEATED AIR
COOL AIR
ZONE
CONTROLLER
CCN BUS
24 VAC
Leaving
Air
Supply
Air Sensor
SPACE
TEMPERATURE
SENSOR
DAMPER
ACTUATOR
Fig. 26 — VAV Dual Duct with Cold Deck Close-Off
Control
SECONDARY
CONTROLLER
DAMPER
ACTUATOR
ZONE
CONTROLLER
CCN BUS
24 VAC
Leaving
Air
Optional space or
ducted heat source
SPACE
TEMPERATURE
SENSOR
DAMPER
ACTUATOR
VENTILATION
AIR
CONDITIONED
AIR
Optional supply air
sensor for ducted
heat source
SPACE
CARBON DIOXIDE
SENSOR
CCN BUS
Fig. 28 — VAV Dual Duct with Demand Controlled
Ventilation
SECONDARY
CONTROLLER
DAMPER
ACTUATOR
ZONE
CONTROLLER
CCN BUS
24 VAC
Leaving
Air
Optional space or
ducted heat source
SPACE
TEMPERATURE
SENSOR
DAMPER
ACTUATOR
VENTILATION
AIR
CONDITIONED
AIR
Optional supply air
sensor for ducted
heat source
Fig. 27 — VAV Dual Duct with Constant Ventilation
Control

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53350001-01 Printed in U.S.A. Form 35L,N-1SI Pg 20 3-06 Replaces: 35L,M,N-1SI
Book 3
Ta b 6 a
Copyright 2006 Carrier Corporation