Carrier 35E 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. 533-530 Printed in U.S.A. Form 35E-2SI Pg 1 3-06 Replaces: 35E-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....................3,4
INSTALLATION ................................. 4-6
Step 1 — Install Volume Control Box .............4
Step 2 — Make Duct Connections ................ 4
Step 3 — Install Sensors and Make Field
Wiring Connections — Electronic Analog
or DDC (Direct Digital Controls) ................4
CONTROL SET-UP ...............................7
General ..........................................7
Set Points ........................................7
Field Adjustments of Minimum and
Maximum Airflow Set Points ................... 7
System Calibration of the Linear Averaging
Flow Probe..................................... 7
PNEUMATIC CONTROLS .......................7-11
Preparation for Balancing (Control
Sequences 1102 and 1103).....................7
Balancing Procedure
(Control Sequences 1102 and 1103)............9
• DIRECT ACTING THERMOSTAT,
NORMALLY OPEN DAMPER (Control
Sequence 1102)
• REVERSE ACTING THERMOSTAT, NORMALLY
CLOSED DAMPER (Control Sequence 1103)
Balancing Procedure
(Control Sequences 1104-1110) ...............10
Preventative Maintenance .......................10
Pneumatic Control Troubleshooting.............10
ANALOG CONTROLS ........................ 11-13
Balancing Procedures
(Control Sequences 2100-2105) ............... 11
Analog Control Troubleshooting ................13
ComfortID™ CONTROLS ..................... 13-21
Install Sensors and Make Field-Wiring
Connections ..................................13
• 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 .......... 19
• COMMUNICATION BUS WIRE SPECIFICATIONS
• CONNECTION TO THE COMMUNICATION BUS
Water Valve Installation .........................19
ComfortID Start-Up..............................19
• GENERAL
• PRIMARY SYSTEM CHECK
• ComfortID CONTROL SYSTEM CHECK
CCN System Start-Up ...........................20
VVT® CONTROLS ............................ 21-23
General ......................................... 21
• DIRECT DRIVE HIGH TORQUE ACTUATOR
• RELAY PACKAGE
• ADDITIONAL SENSOR INFORMATION
•THERMOSTATS
Thermostat Placement ..........................21
Wiring Requirements............................21
• CCN COMMUNICATIONS
• THERMOSTAT TO TERMINAL CONTROL BOX
Wiring Connections .............................22
VVT Configuration/Testing ...................... 23
Control Start-up................................. 23
• GENERAL
• PRIMARY SYSTEM CHECK
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 sys-
tem operation, safety devices and emergency procedures.
Good judgement should be used in applying any
manufacturer’s instructions to avoid injury to personnel
or damage 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.
If it is necessary to remove and dispose of mercury contac-
tors in electric heat section, follow all local, state, and fed-
eral laws regarding disposal of equipment containing
hazardous materials.
35E Single-Duct Terminal Units
Variable Volume System

2
PRE-INSTALLATION
General — The 35E is a single duct, variable volume termi-
nal available with factory-installed pneumatic, analog electron-
ic, Carrier Comfort Network® (CCN) or VVT®(variable vol-
ume and temperature) electronic control options that can be
used in conjunction with unit-mounted electric or hot water
heat options. Figure 1 shows the basic box. Figure 2 is an
example of a unit identification label.
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. If a unit is sup-
plied with electric or hot water heat, care should be taken to
prevent damage to these devices. 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 1 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.
UNIT SUSPENSION — See Fig. 3 for unit suspension details.
Warranty — All Carrier-furnished items carry the standard
Carrier warranty.
No periodic preventative maintenance required, unless
called for specific control sequence.
Table 1 — 35E 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.
3. Units rated with standard linear flow sensor.
35E
SIZE
UNIT ONLY
(lb)
WITH PNEUMATIC
CONTROLS
(lb)
WITH DDC OR
ANALOG CONTROLS
(lb)
WITH ELECTRIC HEAT
CONTROLS
(lb)
WITH HOT WATER
(1 ROW/2 ROW) (lb)
4, 5, 6 14 18 23 32 19/20
7, 8 16 20 25 39 21/23
9, 10 21 25 30 44 28/30
12 26 30 35 56 35/38
14 34 38 43 65 44/49
16 38 42 47 75 50/55
22 65 69 74 91 82/90
Fig. 1 — 35E Single Duct Box (Sizes 4-16)
Fig. 2 — Unit Identification Label

3
CONTROL ARRANGEMENTS
The 35E single-duct unit is 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 re-
quirements 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 arrange-
ments. Carrier VVT® electronic controls and PIC (Product
Integrated Control) DDC (Direct Digital Controls) are commu-
nicating controls which are integrated with the building system.
The PIC controls are compatible with the CCN system. A num-
ber of DDC control packages by others are available for con-
signment mounting, as indicated.
Control offerings are:
35EA: Analog Electronic
35EC: PIC Direct Digital Electronic
35EP: Pneumatic
35EV: VVT Electronic (Gen. III or 3V™ controls)
35EN: 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 func-
tion arrangements for each control offering. Because of the
variety of functions available, circuit diagrams, operating
sequences, and function descriptions are contained in separate
Application Data publications. Refer to the specific control
publication for details.
CCN Control Arrangements — Carrier Comfort Net-
work® (CCN) controls are factory-installed in a control enclo-
sure. Factory-mounted transformers are available as an option.
Thermostats are supplied separately as a field-installed acces-
sory. Carrier Comfort Network control packages must be used
in combination with a thermostat. Thermostats are not
included in the CCN package.
4140: Cooling only
4141: Single-stage and 2-stage electric heat
4142: 3-stage electric heat
4143: On-Off hot water
4144: Proportional (floating) hot water heat
4145: Cooling only with supply return tracking
4147: Single-stage, 2-stage and 3-stage electric heat with
supply return tracking
4149: Proportional (floating) hot water with supply return
tracking
4150: Return air damper
CCN Thermostats (Ordered Separately)
Thermostat: 33ZCT56SPT: RT (room temperature) sensor,
with set point adjust and override.
Thermostat: 33ZCT55SPT: RT (room temperature) sensor,
with override only.
Thermostat: 33ZCT58SPT: Communicating room tempera-
ture sensor with LCD (liquid crystal diode), set point adjust,
fan control and occupancy override.
Thermostat: 33ZCT56CO2: RT (room temperature) and CO2
sensor, with set point adjust and override.
Thermostat: 33ZCT55CO2: RT (room temperature) and CO2
sensor, with override only.
VVT Electronic Control Arrangement — Va ri -
able volume and temperature (VVT) controls are factory-
installed in a control enclosure. Factory-mounted transformers
are available as an option. Thermostats are supplied separately
as a field-installed accessory.
GEN. III CONTROL CODES AND DESCRIPTIONS
8200: Pressure dependent, cooling only
8201: Pressure dependent, cooling with 2-stage electric heat
8202: Pressure dependent cooling with on/off hot water heat
8206: Pressure independent, cooling only
8207: Pressure independent, cooling with 2-stage electric heat
8208: Pressure independent cooling with on/off hot water heat
8209: Variable air volume (VAV) pressure dependent unit
control zone (Monitor)
8210: Bypass controller, 2-in. wg transducer
3V CONTROL CODES AND DESCRIPTIONS
8220: Pressure dependent cooling only
8221: Pressure dependent cooling with 3-stage electric heat
8222: Pressure dependent cooling with on/off hot water heat
8223: Pressure dependent cooling with modulating hot water
heat
8224: Pressure dependent cooling with combination base-
board and 2-stage electric heat
8226: Pressure independent cooling only
8227: Pressure independent cooling with 2-stage electric heat
8228: Pressure independent cooling with on/off hot water heat
8230: Bypass control
Analog Electronic Control Arrangement —
Pressure independent control packages are available without
supplemental heat, with on/off hot water or electric heat, pro-
portional hot water heat, or with cooling/heating automatic
changeover control.
FIELD SUPPLIED
HANDING WIRE
BRACKET
DETAIL
Fig. 3 — Typical Unit Suspension with Brackets

4
All analog control arrangements include a standard linear
inlet flow sensor, 24-v transformer (optional), control enclo-
sure and wall thermostat to match the control type.
2100: Heating control
2101: Cooling control
2102: Cooling with on/off electric heat control
2103: Cooling with on/off hot water heat control
2104: Cooling/heating automatic changeover control
2105: Cooling with proportional hot water heat control
Pneumatic Control Arrangement — All control
packages are pressure independent (unless otherwise noted)
and available with or without hot water heat, dual maximum
airflow, heating and cooling maximum airflow and dual mini-
mum airflow. All control arrangements include a standard
linear inlet flow sensor.
1100 (Actuator only): DA-NC pressure dependent control
1101 (Actuator only): RA-NO pressure dependent control
1102 (Single function controller): DA-NO with or without hot
water or electric heat
1103 (Single function controller): RA-NC with or without hot
water or electric heat
1104 (Multi-function controller): DA-NO with or without hot
water or electric heat
1105 (Multi-function controller): DA-NC with or without hot
water or electric heat
1106 (Multi-function controller): RA-NO with or without hot
water or electric heat
1107 (Multi-function controller): RA-NC with or without hot
water or electric heat
1108 (Dual Maximum Control): DA-NO with or without hot
water or electric heat
1109 (Heating/Cooling Maximum Control): DA-NO with or
without hot water or electric heat
1110 (Dual Minimum Control): DA-NO with or without hot
water or electric heat
PNEUMATIC CONTROL LEGEND
DA: Direct-acting thermostat
RA: Reverse-acting thermostat
NO: Normally open damper position
NC: Normally closed damper position
The single function controller provides single functions, i.e.,
DA-NO. Multi-function controllers are capable of providing
DA-NO, DA-NC, RA-NC or RA-NO functions.
Direct Digital Electronic Control Arrange-
ments (Field-Supplied) — Control packages are field-
supplied for factory mounting, unless otherwise noted. All
DDC control arrangements include a standard linear inlet flow
sensor, transformer to 24 volts and control enclosure.
Contact Carrier for detail about mounting field-supplied
controls.
NO CONTROL
0000: 35E box only
D000: 35E box with control box only (For units without
electric heat requiring a 24 v control transformer: the control
transformer must be ordered from the unit accessories list in
Quote Builder.)
D001: 35E box with control box and 24 v transformer
P000: 35E box without controls (for DA pneumatic controlled
heat unit)
P001: 35E box without controls (for RA pneumatic controlled
electric heat unit)
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 on unit as shown
in Fig. 3.
3. Suspend units from building structure with straps, rods,
or hanger wires. Secure the unit and level it in each direc-
tion. Note that reheat coil is in heavy end of unit.
Step 2 — Make Duct Connections
1. Install supply ductwork on unit inlet collar. Check that
air-supply duct connections are airtight and follow all
accepted medium-pressure duct installation procedures.
(Refer to Table 2 for pressure data.)
NOTE: To ensure proper equipment performance, it is
recommended that a length of rigid straight duct equal to
3 times the duct diameter be provided to the inlet.
2. Install the discharge duct. Where a multiple outlet con-
nector is used on the box, connect appropriately sized
ductwork to the outlets. Use adapter caps to seal unused
outlets. Fully open all balancing dampers.
To ensure use of common-diameter air duct, coordinate
diameters of box inlet and multiple outlet collars. Insulate duct
as required.
Ninety degree elbows or tight radius flexible duct immedi-
ately upstream of inlet collar should be avoided.
Step 3 — Install Sensors and Make Field Wir-
ing Connections — Electric Analog or DDC
(Direct Digital Controls) — Refer to specific unit di-
mensional submittals and control application diagrams for con-
trol specifications. 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. 4.
Single duct terminal units with electric heat are supplied
with a single point wiring connection in the heater control box.
All unit power is supplied through this connection. Models
with electric heat are factory equipped with a control trans-
former. See Fig. 5.
Wiring and unit ampacities are referenced in Tables 3A and
3B.
NOTE: Refer to wiring diagram attached to each unit for spe-
cific information on that particular unit. Units with 480-3-60
electric heater REQUIRE 4-wire, wye connected power.
units with 208/230 v, 3-phase heater can be connected with
3-wire power.
Unit airflow should not be set outside of the range noted in
Fig. 6. The minimum recommended airflow for units with elec-
tric heat must be at least 75 cfm per kW and not drop below the
minimum values listed in the performance data table. The max-
imum unit discharge temperature should not exceed 120 F.
Prevent air stratification by setting the discharge temperature
no more than 15 degrees above the room temperature.
Example: 90 F discharge in a 75 F room.
LOCK OUT AND TAG heater electrical disconnect before
working on this equipment. Otherwise, one leg of the 3-leg
heater remains energized. Electrical shock or personal
injury could result.

5
Table 2 — 35E Basic Pressure Data
LEGEND
*Minimums are for all except CCN controls, which may be lower. Minimum for DDC by
others is to be provided by the control’s provider.
†A minimum 0.03 in. wg discharge static pressure is required to set the flow switch in the
electric heater.
**Maximum discharge temperatures with electric heat are set at 120 F by the National
Electric Code. Max kW shown assumes 55 F entering air and is limited by unit’s selected
voltage, phase, max capacity and design (see Electrical Data in the Product Data cata-
log). Min cfm for electric heat is based on UL/ETL listings. (Diffuser) performance will
likely be poor at this low flow rate.) The ASHRAE (American Society of Heating, Refrig-
eration and Air Conditioning Engineers) Handbook of Fundamentals does not recom-
mend a discharge temperature exceeding 90 F for satisfactory air mixing and comfort.
††Max. kW is limited by design.
NOTES:
1. To obtain Total Pressure (Pt), add the Velocity Pressure for a given cfm to the Static
Pressure drop (∆PS) of the desired configuration.
Example: Pt for a Size 8 Basic Unit at 925 cfm = 0.39 + 0.17 = 0.56
2. The electric heat max kW is based on 3 phase power. For more details, refer to the air
terminal selection program.
Table 3A — 35E Heater Power Wiring and
Fuse Sizing (Single Phase, 60 Hz)
LEGEND
*Values based on 75 C copper wire.
Table 3B — 35E Heater Power Wiring and
Fuse Sizing (3 Phase, 60 Hz)
LEGEND
*Recommended minimum wire size.
INLET
SIZE (in.)
(Area)
CFM
MIN AIRFLOW (Cfm)* ELECTRIC HEAT**
MAX kW
AT 55 F EAT
MINIMUM INLET STATIC PRESSURE (Unit and Heat Pressure Drop)
Cooling Only or
Cooling with Hot Water
Electric
Heat †
Velocity Press
(∆VPS)
Basic Unit
(∆PS)
Basic + 1 Row
Coil (∆PS)
Basic + 2 Row
Coil (∆PS)
Basic + 3 Row
Coil (∆PS)
Basic + 4 Row
Coil (∆PS)
Basic + Heater †
(∆PS)
55 50
or
0
55
1.1 0.02 0.00 0.00 0.01 0.01 0.01 0.00
4110 2.3 0.10 0.01 0.02 0.03 0.03 0.04 0.01
(0.09) 170 3†† 0.23 0.02 0.04 0.06 0.08 0.10 0.02
230 3†† 0.43 0.03 0.07 0.11 0.15 0.18 0.03
85 75
or
0
85
1.7 0.02 0.00 0.01 0.02 0.02 0.03 0.00
5170 3.5 0.09 0.02 0.04 0.06 0.08 0.10 0.02
(0.14) 265 5†† 0.23 0.04 0.10 0.15 0.20 0.24 0.04
360 5†† 0.43 0.08 0.18 0.27 0.36 0.45 0.08
100 110
or
0
110
2.1 0.02 0.01 0.01 0.02 0.03 0.03 0.01
6240 4.9 0.09 0.04 0.08 0.12 0.16 0.20 0.04
(0.20) 380 7.5†† 0.22 0.09 0.20 0.30 0.40 0.50 0.09
520 7.5†† 0.42 0.17 0.38 0.57 0.75 0.94 0.17
140 140
or
0
140
2.9 0.02 0.01 0.01 0.02 0.03 0.04 0.01
7330 6.8 0.09 0.04 0.08 0.12 0.16 0.20 0.04
(0.27) 525 9.5†† 0.23 0.09 0.20 0.30 0.40 0.50 0.09
710 9.5†† 0.41 0.17 0.37 0.55 0.73 0.91 0.17
190 185
or
0
190
3.9 0.02 0.01 0.02 0.03 0.05 0.06 0.01
8440 9.1 0.09 0.04 0.12 0.19 0.25 0.32 0.04
(0.35) 675 13†† 0.21 0.09 0.27 0.44 0.60 0.76 0.09
925 13†† 0.39 0.17 0.51 0.82 1.13 1.43 0.17
240 240
or
0
240
4.9 0.02 0.01 0.02 0.03 0.04 0.05 0.01
9550 11.3 0.08 0.07 0.12 0.17 0.22 0.27 0.07
(0.44) 875 16†† 0.21 0.17 0.31 0.44 0.57 0.69 0.17
1200 16†† 0.40 0.32 0.59 0.83 1.07 1.31 0.32
300 290
or
0
300
6.2 0.02 0.01 0.02 0.04 0.05 0.07 0.01
10 675 13.9 0.08 0.04 0.12 0.20 0.27 0.35 0.04
(0.55) 1075 21†† 0.20 0.10 0.31 0.50 0.69 0.89 0.10
1450 21†† 0.36 0.17 0.56 0.91 1.26 1.62 0.17
425 420
or
0
425
8.7 0.01 0.01 0.02 0.04 0.06 0.07 0.01
12 1000 20.6 0.08 0.04 0.14 0.22 0.31 0.40 0.04
(0.78) 1550 30†† 0.19 0.09 0.33 0.54 0.75 0.96 0.09
2100 30†† 0.34 0.17 0.60 0.99 1.37 1.76 0.17
580 580
or
0
580
11.9 0.01 0.01 0.02 0.04 0.05 0.06 0.01
14 1375 28.3 0.07 0.04 0.13 0.21 0.28 0.36 0.04
(1.07) 2125 36†† 0.17 0.10 0.31 0.49 0.68 0.86 0.10
2900 36†† 0.31 0.19 0.57 0.92 1.26 1.60 0.19
750 740
or
0
750
15.4 0.01 0.01 0.02 0.04 0.06 0.07 0.01
16 1775 36†† 0.06 0.04 0.14 0.22 0.31 0.40 0.04
(1.40) 2725 36†† 0.14 0.09 0.32 0.53 0.73 0.94 0.09
3700 36†† 0.25 0.17 0.59 0.97 1.35 1.73 0.17
1800 1400
or
0
1800
36†† 0.02 0.01 0.05 0.09 0.13 0.16 0.01
22 3300 36†† 0.07 0.04 0.17 0.30 0.42 0.55 0.04
(2.63) 5200 36†† 0.16 0.09 0.43 0.74 1.05 1.36 0.09
7100 36†† 0.31 0.17 0.81 1.38 1.95 2.53 0.17
CCN — Carrier Comfort Network® ∆PS—Thedifferenceinstaticpressure
from inlet to discharge with damper
fully open
DDC — Direct Digital Controls
EAT — Entering Air Temperature
UL — Underwriters Laboratories ∆VPS —Change in velocity pressure
HEATER
SIZE (kW) BTUH
120 V 208/240 V 277 V
Heater
FLA AWG* Heater FLA AWG* Heater FLA AWG*
0.5 1,707 4.2 14 2.1 14 1.8 14
1.0 3,413 8.3 14 4.2 14 3.6 14
2.0 6,826 16.7 10 8.3 14 7.2 14
3.0 10,239 25.0 8 12.5 12 10.8 14
4.0 13,652 33.3 8 16.7 10 14.4 12
5.0 17,085 41.7 5 20.8 10 18.1 10
6.0 20,478 50.0 5 25.0 8 21.7 10
7.0 23,898 58.3 4 29.2 8 25.3 8
8.0 27,304 66.7 4 33.3 8 28.9 8
9.0 30,717 75.0 3 37.5 6 32.6 8
10.0 34,130 83.3 2 41.7 6 36.1 6
11.0 37,130 91.7 2 45.8 6 39.7 6
12.0 40,956 100.0 1 50.0 6 43.3 6
AWG — American Wire Gage
FLA — Full Load Amps
HEATER
SIZE (kW) BTUH 208 V 480 V
Heater FLA AWG* Heater FLA AWG*
0.5 1,707 1.4 14 0.6 10
1.0 3,413 2.8 14 1.2 10
2.0 6,826 5.6 14 2.4 10
3.0 10,239 8.3 14 3.6 10
4.0 13,652 11.1 14 4.8 10
5.0 17,085 13.9 12 6.0 10
6.0 20,478 16.7 10 7.2 10
7.0 23,898 19.4 10 8.4 10
8.0 27,304 22.2 10 9.6 10
9.0 30,717 25.0 8 10.8 10
10.0 34,130 27.8 8 12.0 10
12.0 40,956 33.3 8 14.4 12
14.0 47,782 38.8 6 16.8 12
16.0 54,608 44.4 6 19.2 10
18.0 61,434 50.0 6 21.6 10
20.0 68,260 55.5 4 24.0 10
22.0 75,086 61.1 4 26.4 8
24.0 81,912 66.6 4 28.8 8
26.0 88,738 72.3 3 31.3 8
28.0 95,564 77.8 3 33.7 8
30.0 102,390 83.4 2 36.1 6
32.0 109,216 89.0 2 38.6 6
34.0 116,042 94.5 1 41.0 6
36.0 122,868 100.1 1 43.4 6
AWG — American Wire Gage
FLA — Full Load Amps

6
ANALOG
OR DDC
CONTROLLER
SEPARATE
CONTROL
ENCLOSURE
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
CFM
SIZE 4
SIZE 5
SIZE 6
SIZE 7
SIZE 8
SIZE 9
SIZE 10
SIZE 12
SIZE 14
SIZE 16
SIZE 22
CFM AT ONE INCH SIGNAL
FLOW PROBE IN.WG
VOLTS (ANALOG CONTROLS)
LEGEND
NOTE: Drawing is typical of 480V,
3-phase, 4-wire heater and control.
Refer to actual unit wiring diagram.
AFS — Airflow Switch
DDC — Direct Digital Controls
Fig. 5 — Typical Power Connections for 35E Units with 3-Stage Electric Heat
ANALOG OR DDC
CONTROLLER
24VAC
BLU
YEL
CLASS II
TRANSFORMER
(OPTIONAL)
120VAC
208VAC
240VAC
277VAC
L1
GROUND
24 VAC
POWER
LEGEND
NOTE: Drawing is typical — refer to actual unit wiring diagram
for details.
Fig. 4 — Wiring of Optional Factory-Mounted
Transformer
DDC — Direct Digital Controls
Field Wiring
Factory Wiring
Fig. 6 — Linear Probe CFM vs Pressure Signal Graph

7
CONTROL SETUP
General — The 35E single-duct VAV (variable air volume)
terminal is designed to supply a varying quantity of cold prima-
ry air to a space in response to a thermostat demand. Some
units have reheat options to provide heating demand require-
ments as well. Most VAV terminals are equipped with pressure
compensating controls to regulate the response to the thermo-
stat independent of the pressure in the supply ductwork.
To balance the unit, it is necessary to set both the maximum
and minimum set points of the controller. The many types of
control options 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 35E unit is equipped with a
flow probe that measures a differential pressure proportional to
the airflow. The relationship between flow probe pressures and
cfm is shown in the Linear Probe CFM vs Pressure Signal
Graph (Fig. 6). 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 dif-
ferential 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.
Carrier inlet areas are shown in the table below. The design
air volume is also shown in this table. It can be determined
from this table that the average design air velocity for 35E units
is equal to 2656 fpm at 1.0 in. wg.
.
NOTE: For Carrier ComfortID™ terminals, all flow sizes are normal-
ized using a single Probe Multiplier (PMF) for all sizes equal to
2.273.
Record the information on a performance sheet (see
Fig. 7). This will provide a permanent record of the balanc-
ing information.
• installation location information
•boxsize
• cooling minimum airflow (cfm) limit
• cooling maximum airflow (cfm) limit
• reheat (cfm) limit (if applicable)
• heating minimum airflow (cfm) limit (if applicable)
• heating maximum airflow (cfm) limit (if applicable)
• calibration gain (after balancing)
• set points
PNEUMATIC CONTROLS
Preparation for Balancing (Control Sequences
1102 and 1103)
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 Linear Aver-
aging Probe Chart to determine the airflow in the terminal
unit. This chart is shown in Fig. 6 and is also attached to
the 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 controllers for 35EP units are shown in Fig. 8-10.
Identification for each controller is shown in Table 4.
UNIT SIZE 35E 04 05 06 07 08 09
INLET
DIAMETER 4.0 5.0 6.0 7.0 8.0 9.0
AIRFLOW (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
35EUNITSIZE1012141622
INLET DIAMETER 10.0 12.0 14.0 16.0 16 x 24
AIRFLOW (Cfm)
AT 1 in . wg 1449 2086 2840 3709 7250
INLET AREA
(sq ft) 0.545 0.785 1.069 1.396 2.640

8
AIR TERMINAL PERFORMANCE SHEET
JOB NAME ______________________________________________
JOB LOCATION __________________________________________
CUSTOMER _____________________________________________
ENGINEER ______________________________________________
BUILDING LOCATION/FLOOR ______________________________
BUS NUMBER ___________________________________________
Fig. 7 — Air Terminal Performance Sheet
CONTROL SET POINTS
Tag
Number
Zone
Address #
Box
Size
(in./cfm)
Cooling
(cfm) Reheat
cfm
Heating
(cfm) Heat kW Occupied Unoccupied Calibration Gain
min max min max Type Btu min max min max mult.

9
Table 4 — Pneumatic Volume Controller Identification
LEGEND
Balancing Procedure (Control Sequences
1102 and 1103)
DIRECT ACTING THERMOSTAT, NORMALLY OPEN
DAMPER (Control Sequence 1102) — Refer to Fig. 8.
1. Minimum volume setting:
a. Disconnect the thermostat line from the volume
controller.
b. Adjust the minimum volume control knob
(marked “LO” and located in the center of the
controller) to achieve the required minimum flow.
To determine the required pressure differential,
refer to Tables 2 and 5 and the Linear Averaging
Probe Chart provided on the side of the VAV unit
and in Fig. 6.
c. Reconnect the thermostat line.
2. Maximum volume setting:
a. Disconnect the thermostat line from the volume
controller.
b. Apply 15 + psi to the thermostat port on the vol-
ume controller (marked “T”) by tapping into the
main air pressure line.
c. Adjust the maximum volume control knob
(marked “HI” and located at the side of the con-
troller) until the desired pressure differential is
registered on the manometer. To determine the
required pressure differential, refer to Table 5 and
the Linear Probe CFM vs Pressure Signal Graph
provided on the side of the VAV unit and in Fig. 6.
d. Reconnect the thermostat line.
REVERSE ACTING THERMOSTAT, NORMALLY CLOSED
DAMPER (Control Sequence 1103) — Refer to Fig. 9.
1. Maximum volume setting:
a. Disconnect the thermostat line from the velocity
controller.
b. Adjust the maximum volume control knob
(marked “HI” and located in the center of the con-
troller) to achieve the required minimum flow. To
determine the required pressure differential, refer
to Tables 2 and 5 and the Linear Averaging Probe
Chart provided on the side of the VAV unit and in
Fig. 6.
c. Reconnect the thermostat line.
2. Minimum volume setting:
a. Disconnect the thermostat line from the velocity
controller.
b. Apply 15 + psi to the thermostat port on the vol-
ume controller (marked “T”) by tapping into the
main air pressure line.
CONTROL
SEQUENCE
FUNCTION
ARRANGEMENT
IDENTIFICATION
FIG. NO. KREUTER
PART N O.
1102 DA-NO 8 CSC-2003
1103 RA-NC 9 CSC-2004
1104 DA-NO 10 CSC-3011
1105 DA-NC 10 CSC-3011
1106 RA-NO 10 CSC-3011
1107 RA-NC 10 CSC-3011
1108 DUAL MAX10 CSC-3011
1109 HTG/CLG MAX10 (2) CSC-3011
1110 DUAL MIN 10 CSC-3011
DA — Direct Acting NO — Normally Open
NC — Normally Closed RA — Reverse Acting
HI
LO
CSC-2003
0-1” P
D.A.
DMPR. N.O.
I
N
C
R
E
A
S
E
I
N
C
R
E
A
S
E
HI
LO
CSC-2004
0-1” P
R.A.
DMPR. N.C.
I
N
C
R
E
A
S
E
I
N
C
R
E
A
S
E
T
HL
B
M
NO
NC
G
RESET START
LO STAT ∆P
RESET SPAN
HI STAT ∆P
DAMPER
I
N
C
R
I
N
C
R
Fig. 8 — Pneumatic Volume Controller
(Normally Open) for 35EP Unit (Beige Color)
Fig. 9 — Pneumatic Volume Controller
(Normally Closed) for 35EP Unit (Grey Color)
Fig. 10 — CSC 3000 Series
Reset Volume Controller

10
c. Adjust the minimum volume control knob
(marked “LO” and located at the side of the con-
troller) until the desired pressure differential is
registered on the manometer. To determine the
required pressure differential, refer to Table 5 and
the Linear Averaging Probe Chart provided on the
side of the VAV unit and in Fig. 6.
d. Reconnect the thermostat line.
Balancing Procedure (Control Sequences
1104-1110)
1. Damper action is factory set at N.O. (normally open) or
N.C. (normally closed). To reselect, loosen damper selec-
tion switch screw, align pointer with damper pointer and
tighten screw. The spring range of the actuator is not criti-
cal since the controller will output the necessary pressure
to the actuator to position the damper according to set
point. (See Fig. 11.)
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)
thermostat signal. The two flow adjustments are labeled “LO
STAT ∆P” and “HI STAT ∆P. ”
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. 12):
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 ∆P must be set last. The HI STAT
∆P setting will be affected by the LO STAT ∆Psetting.
• For RA Cooling or DA Heating (see Fig. 12):
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 ∆P must be set last. The
HI STAT ∆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
manufacturers recommendations.
Pneumatic Control Troubleshooting — See Table 5.
Table 5 — Troubleshooting
NOTE: Always Check:
1. Main air pressure (15 psi to 25 psi) at the controller.
2. Disconnected or kinked pneumatic lines to the controller.
3. Quality of compressed air (oil or water in lines).
4. Proper thermostat signal and logic (Direct/Reverse Acting).
5. Blocked velocity probe or insufficient primary supply air.
6. Leaks in the actuator diaphragm.
7. Mechanical linkage of the actuator/air valve.
PROBLEM PROBABLE CAUSE
Controller does not reset to maximum or minimum set point during
balance 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.).
Insufficient supply air in the inlet duct.

11
ANALOG CONTROLS
Balancing Procedures (Control Sequences
2100-2105) — The analog electronic control system is a
pressure independent volume reset control that uses a Krueger
CSP-5001 controller-actuator (see Fig. 13).
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)
and T2in the heating mode (RA). 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 T4for heating. Terminals T1and T2
are adjustable to limit minimum 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.
CONTROL SEQUENCE 2100 (Heating Only)
1. Be certain the ambient room temperature at the thermo-
stat is within the range of the thermostat (55 to 85 F).
2. Adjust the heating set point slider all the way to the left
for minimum heating.
3. Read the DC voltage across the meter taps on the heating
(left) side. Adjust the minimum set point (MIN INCR)
potentiometer (clockwise to increase or counterclockwise
to decrease) to the DC voltage equal to the desired air-
flow (cfm) as shown on the calibration curve (Fig. 14).
NOTE: The minimum set point must be adjusted first. Adjust-
ment of the MIN INCR potentiometer directly affects the max-
imum set point.
4. Adjust the heating set point slider all the way to the right
for maximum heating.
5. Read the DC voltage across the meter taps on the heating
(left) side. Adjust the maximum set point (MAX INCR)
potentiometer (clockwise to increase or counterclockwise
to decrease) to the DC voltage equal to the desired air-
flow (cfm) as shown on the calibration curve (Fig. 14).
NOTE: The maximum set point must be adjusted last. Adjust-
ment of the MIN INCR potentiometer directly affects the max-
imum set point.
6. Return the heating set point slider to the desired set point.
Insert set point slider stops. Replace thermostat cover.
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
LO STAT ∆P
HI STAT ∆P
ROOM TEMPERATURE
DA COOLING
Reset
Span
Reset Start
∆
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)
*May require changing the RESET START from 8.0 to 3.0 psig if
sequencing is involved.
Fig. 12 — Reset Cycle for CSC-3011 Control
Fig. 11 — 3011 CSC Controller
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. 13 — CSP-5001 Controller

12
CONTROL SEQUENCE 2101 (Cooling Only)
1. Be certain the ambient room temperature is within the
range of the thermostat (55 to 85 F).
2. Adjust the cooling set point slider all the way to the right
for minimum cooling.
3. Read the DC voltage across the meter taps on the cooling
(right) side. Adjust the minimum set point (MIN INCR)
potentiometer (clockwise to increase or counterclockwise
to decrease) to the DC voltage equal to the desired air-
flow (cfm) as shown on the calibration curve.
NOTE: The minimum set point must be adjusted first. Adjust-
ment of the MIN INCR potentiometer directly affects the max-
imum set point.
4. Adjust the cooling set point slider all the way to the left
for maximum cooling.
5. Read the DC voltage across the meter taps on the cooling
(right) side. Adjust the maximum set point (MAX INCR)
potentiometer (clockwise to increase or counterclockwise
to decrease) to the DC voltage equal to the desired air-
flow (cfm) as shown on the calibration curve.
NOTE: The maximum set point must be adjusted last. Adjust-
ment of the MIN INCR potentiometer directly affects the max-
imum set point.
6. Return the cooling set point slider to the desired set point.
Insert set point slider stops. Replace thermostat cover.
CONTROL SEQUENCE 2102 (Cooling with On/Off Elec-
tric Heat Control)
Cooling Side of the Thermostat
1. Follow steps 1 through 5 for cooling sequence 2101.
NOTE: Be sure to adjust the cooling set point slider all the way
to the left for maximum cooling. (The heating set point slider
will have to be adjusted all the way to the left also.)
NOTE: The minimum set point must be adjusted first. Adjust-
ment of the MIN INCR potentiometer directly affects the max-
imum set point and auxiliary set point.
2. Adjustment of auxiliary set point if required:
Read the DC voltage across the meter taps on the heating
(left) side. Adjust the MAX/AUX INCR potentiometer
(clockwise to increase or counterclockwise to decrease)
to the DC voltage equal to the desired airflow (cfm).
3. Return the cooling set point slider and the heating set
point slider to their desired set points. Insert or reinsert set
point slider stops. Replace thermostat cover.
CONTROL SEQUENCE 2104 (Cooling/Heating with
Automatic Changeover Control)
Cooling Side of the Thermostat — Follow steps 1 through 5
for cooling sequence 2101.
NOTE: Be sure to adjust the cooling set point slider all the way
to the left for maximum cooling. (The heating set point slider
will have to be adjusted all the way to the left also.)
CONTROL SEQUENCE 2103 (Cooling with On/Off Hot
Water Heat Control) OR 2105 (Cooling with Proportional
Hot Water Heat Control)
Cooling Side of the Thermostat — Follow steps 1 through 5
for cooling sequence 2101.
NOTE: Be sure to adjust the cooling set point slider all the way
to the left for maximum cooling. (The heating set point slider
will have to be adjusted all the way to the left also.)
NOTE: The minimum set point must be adjusted first. Adjust-
ment of the MIN INCR potentiometer directly affects the max-
imum set point and auxiliary set point.
10000
8000
6000
4000
2000
1000
800
600
400
200
100
80
60
40
20
10
710
522
362
232
2086
1449
1174
927
3709
2840
7250
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
1.2 1.8 2.3 3.4 4.6 5.8 7.2 9.7 11
DIFFERENTIAL
PRESSURE
.02 .04 .06 0.1 0.2 0.3 0.5 0.8 1
VOLTS
Fig. 14 — Calibration Curve 35E

13
Analog Control Troubleshooting — The following
troubleshooting procedure 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 chart on page 12 to correlate into cubic feet
per minute (cfm).
b. If reading is not what is desired, see System Cali-
bration of the Linear Averaging Flow Probe sec-
tion to adjust thermostat.
4. Check Actual Flow voltage on terminal “OUT” and “-”
for 0 to 10 vdc.
Use chart on page 12, Fig. 14 to correlate into cfm.
5. Check box movement, damper rotation, etc.
a. Review Requested Flow and Actual Flow 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 terminal “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. This will tell unit to control at
zero 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 and local requirements. Refer to Tables 6-9 for
electrical and wiring specifications.
Wire the control as shown on the control package diagram
for the specific installation. Control wiring diagrams can be
found inside the control box.
If the 35E unit is equipped with electric heat, only power to
the electric heater must be supplied; no additional power
source is required for the control. If the unit does not have an
electric heater or the control transformer option, a field-
supplied dedicated 24-vac/Class II power source must be in-
stalled and wired to the zone controller, to terminals 1 and 2 of
connector J1. Refer to unit wire label diagram for minimum
size (VA) and grounding requirements for each unit.
SUPPLY-AIR TEMPERATURE (SAT) SENSOR INSTAL-
LATION — On terminals with heat, the SAT sensor is provid-
ed. The sensor is factory wired to the controller 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 6 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. 15.
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.
If the unit has a multiple outlet attenuator connected directly
at the discharge, install the sensor in the multiple outlet attenua-
tor. See Fig. 15.
For units equipped with electric reheat, locate the sensor as
far downstream as possible. This ensures the sensor will not be
affected by excessive radiant heat from the heater coil. Install
the sensor a minimum of 2 ft downstream of the coil for units
with hot water heat.
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.

14
Table 6 — 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 space temperature (SPT) sensor accessory is
ordered separately for field installation. It is installed on
interior walls to measure room space air temperature. See
Fig. 16-20 and Table 6.
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
wiring connections. The cable selected must meet the
requirements for the entire network. See Connect the CCN
Communication Bus section for CCN communication cable
specifications.
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
ZC
AIR
TERMINAL
UNIT
MULTIPLE
OUTLET
ATTENUATOR
HEAT SAT
2 FT. MIN.
PRIMARY
AIR INLET
ZC
AIR
TERMINAL
UNIT
HEAT SAT
2 FT. MIN.
PRIMARY
AIR INLET
LEGEND
Fig. 15 — Supply Air Temperature Probe (Part No. 33ZCSENSAT) Locations
SAT — Supply Air Temperature Sensor
ZC — Zone Controller
UNIT WITH ELECTRIC HEAT
UNIT WITH MULTIPLE OUTLET ATTENUATOR

15
D
5’
3’(MIN)
OR
2/3 OF WALL HEIGHT
Fig. 16 — Typical Space Temperature Sensor
Room Location
Warm
Cool
Fig. 17 — Space Temperature Sensor
(P/N 33ZCT56SPT Shown)
NOTE: Dimensions are in inches.
Fig. 18 — 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. 19 — 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. 20 — Space Temperature Sensor Wiring
(33ZCT56SPT)

16
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.
The wire 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. Refer to Table 8. If the set
point adjustment (slide-bar) is not required, then an un-
shielded, 18 or 20 gage, two-conductor, twisted pair cable
may be used. Refer to Table 7.
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. 19 and 20 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 6 for thermistor
resistance vs temperature values.
NOTE: Clean sensor with damp cloth only. Do not use
solvents.
Table 7 — 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:
1. Identify which cable is for the sensor wiring.
2. Strip back the jacket from the cables 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.
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 ter-
minal 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 terminals
(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) at least 3 inches. Strip 1/4-in. 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 Linkage compatible air source. The part num-
ber is 33ZCSENPAT. See Fig. 21. 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. 22.
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 7.
4. Use field-supplied wire nuts to connect cable to sensor.
5. At zone controller, connect sensor wires to PAT and GND
terminals.
MANUFACTURER PART NUMBER
Regular Plenum
Belden 8205 88442
Columbia D6451 —
American A21501 A48301
Quabik 6130 —
Alpha 1895 —
Manhattan M13402 M64430
Fig. 21 — Primary Air Temperature Sensor
(Part Number 33ZCSENPAT)

17
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. 23-25 and the instructions shipped with the sensor. Use
two 2-conductor 20 American Wire Gage (AWG) twisted-pair
cables (see Table 7) to connect the field-supplied separate iso-
lated 24 vac power source to the sensor and to connect the sen-
sor 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. 26.
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 clean or touch the sensing element with chemical
solvents; they can permanently damage the sensor.
Fig. 24 — Ventilation Rates Based on
CO2Set Point
Fig. 23 — Indoor Air Quality Sensor
(Wall-Mounted Version Shown) 33ZCSENCO2
Fig. 22 — Primary Air Temperature
Sensor Installation
(Air-Handling Unit Discharge Locations)

18
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.
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
1/4in. of insulation from each conductor. Route the cable
through the wire clearance opening in the center of the
sensor.
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 1/4in. 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.
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. 25 — Indoor Air Quality Sensor Wiring
Fig. 26 — Wall Mounted Relative Humidity Sensor
(P/N 33AMSENRHS000)

19
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. Con-
necting 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 the Install Sensors
and Make Field-Wiring Connections 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 8 for recom-
mended cable.
Table 8 — 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 9 for the recommended color code.
Table 9 — Color Code Recommendations
3. Refer to Fig. 27. Connect the other end of the commu-
nication bus cable to the terminal block labeled CCN
in the zone controller of the first air terminal. Follow-
ing the color code in Table 9, connect the Red (+) wire
to Terminal 1. Connect the White (ground) wire to Ter-
minal 2. Connect the Black (–) wire to Terminal 3.
4. Connect additional zone controllers in a daisy chain
fashion, following the color coded wiring scheme in
Table 9.
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).
Water Valve Installation
Water valves are field supplied. Carrier offers two different
hot water valve applications: on/off and floating point modulat-
ing proportional control. See Table 10 for specifications for
compatible water valves. To connect the field-supplied water
valves to the wiring harness terminal board located in the ter-
minal control unit, refer to the wiring labels for the control
package.
Table 10 — Valve Specifications
ComfortID™ 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 and connections of any optional
electric reheat coil. If hot water reheat is used, check pip-
ing and valves per job drawings.
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®,Net-
work Service Tool or ComfortID Test and Balance Tool
software.
3. Set supply-duct balancing dampers, if used, in maximum
cool position.
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
Disconnect power before wiring the terminal control unit
or electrical shock and personal injury could result.
Follow the valve manufacturers recommended installation
instructions.
TYPE ON/OFF
VALVE
3 POINTS
FLOATING
VALVE
Vol tag e
Frequency
Power Requirement
24 vac
50/60 Hz
Not to exceed 15 va
24 vac (15%)
50/60 Hz
Not to exceed 15 va
max inrush

20
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 11.
9. Check that each heating coil is fully operational and that
proper airflow is maintained during heating.
It is important to maintain sufficient airflow to units with
electric heating elements. Supply-air temperature should NOT
EXCEED 105 F in any stage of heating operation. Check the
system to make sure that it does not cycle on and off during
heating.
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. See Table 11 for troubleshooting information.
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 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
Installation and Operation Instructions (Carrier publication no.
533-360) for additional information.
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
0
1
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
Fig. 27 — CCN Terminations at Zone Controller