Airxcel Industrial Climate Engineering CFA1012A User manual

ICE CFA1012A I&O Manual 01/2021 New
Chapter 1 Description................................. 5
Chapter 2 Installation............................... 14
Chapter 3 Start-Up ................................... 20
Chapter 4 Troubleshooting ....................... 21
Chapter 5 Maintenance............................. 24
Chapter 6 Warranty .................................. 25
Chapter 7 Exploded View Parts List.......... 26
Installation & Operation Manual
Vertical Air Conditioners
Model CFA1012A
Manufactured By:
Industrial Climate Engineering™ Division of AIRXCEL®, Inc.
P.O. Box 5104 • Cordele, Georgia 31010
2002 Hoover St. • Cordele, Georgia 31015
[phone] • Fax [phone]
E-mail: [email protected] • Internet: www.acice.com
The most current version of this manual can be found at www.acice.com.
CFA1012A

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ICE CFA1012A I&O Manual 01/2021 New
How To Use This Manual
This manual is intended to be a guide to Industrial Climate Engineering's line of vertical air conditioners. It contains
installation, troubleshooting, maintenance, warranty, and application information. The information contained in this
manual is to be used by the installer as a guide only. This manual does not supersede or circumvent any applicable
national or local codes.
If you are installing the air conditioner rst read Chapter 1 and scan the entire manual before beginning the installation as
described in Chapter 2. Chapter 1 contains general, descriptive information and provides an overview which can speed
up the installation process and simplify troubleshooting.
If a malfunction occurs, follow this troubleshooting sequence:
1. Make sure you understand how the air conditioner works (Chapters 1 & 3).
2. Identify and correct installation errors (Chapter 2).
3. Refer to the troubleshooting information in Chapter 4.
If you are still unable to correct the problem, contact the Factory at 1-229-273-9558 for additional assistance.
Please read the following “Important Safety Precautions” before beginning any work.
Important Safety Precautions
1. USE CARE when LIFTING or TRANSPORTING equipment.
2. TRANSPORT the UNIT UPRIGHT. Laying it down on its side may cause oil to leave the compressor and breakage
or damage to other components.
3. TURN ELECTRICAL POWER OFF AT THE breaker or fuse box BEFORE installing or working on the equipment.
LINE VOLTAGES ARE HAZARDOUS or LETHAL.
4. OBSERVE and COMPLY with ALL applicable PLUMBING, ELECTRICAL, and BUILDING CODES and ordi-
nances.
5. SERVICE may be performed ONLY by QUALIFIED and EXPERIENCED PERSONS.
* Wear safety goggles when servicing the refrigeration circuit
* Beware of hot surfaces on refrigerant circuit components
* Beware of sharp edges on sheet metal components
* Use care when recovering or adding refrigerant
6. Use COMMON SENSE - BE SAFETY-CONSCIOUS
This is the safety alert symbol . When you see this symbol on the air conditioning unit and in the instruction
manuals be alert to the potential for personal injury. Understand the signal word DANGER, WARNING and
CAUTION. These words are used to identify levels of the seriousness of the hazard.
DANGER Failure to comply will result in death or severe personal injury and/or property damage.
WARNING Failure to comply could result in death or severe personal injury and/or property damage.
CAUTION Failure to comply could result in minor personal injury and/or property damage.
IMPORTANT Used to point out helpful info that will result in improved installation, reliability or operation.
© 01/2021 Industrial Climate Engineering™ Div. Airxcel™, Inc.
SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE.

3ICE CFA1012A I&O Manual 01/2021 New
WARNING
• If the information in these instructions are not followed exactly, a re may result
causing property damage, personal injury or loss of life.
• Read all instructions carefully prior to beginning the installation. Do not begin
installation if you do not understand any of the instructions.
• Improper installation, adjustment, alteration, service or maintenance can cause
property damage, personal injury or loss of life.
• Installation and service must be performed by a qualied installer or service agency in
accordance with these instructions and in compliance with all codes and requirements
of authorities having jurisdiction.
INSTALLER: Afx the instructions on the inside of the building adjacent to the
thermostat.
END USER: Retain these instructions for future reference.
Table of Contents
Chapter 1 Air Conditioner Description & Specications
1.1 General Description .................................................................................................................................5
1.2 Model Identication .................................................................................................................................5
1.3 Serial Number Date Code ........................................................................................................................5
1.4 Electrical Data and Performance Data .....................................................................................................6
1.5 General Operation ....................................................................................................................................8
1.6 Electrical Diagrams..................................................................................................................................9
1.7 Electronic Control Board Mode of Operation........................................................................................10
Chapter 2 Installation
2.1 Equipment Inspection.............................................................................................................................12
2.2 Installation Requirements.......................................................................................................................12
2.3 Installation Materials ............................................................................................................................13
2.4 Porting and Duct Work ..........................................................................................................................14
2.5 Air Flow Requirements and Ducting ....................................................................................................14
2.6 Bottom Bracket Installation ...................................................................................................................15
2.7 Mounting the Unit .................................................................................................................................16
2.8 Electrical Connections ...........................................................................................................................16
Chapter 3 Start-Up
3.1 Start-Up & Commissioning Checklist ..................................................................................................18
Chapter 4 Troubleshooting
4.1 Overview ................................................................................................................................................22
4.2 Failure Symptoms Guide........................................................................................................................22
4.3 Compressor Troubleshooting .................................................................................................................23
Chapter 5 Maintenance
5.1 Scheduled Maintenance .........................................................................................................................25
Chapter 6 Warranty
6.1 Airxcel Commercial/Industrial Group Limited Product Warranty.........................................................26

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Illustrations
Figure 1. Dimensional Data..................................................................................................................... 7
Figure 2. Typical Electrical Schematic.................................................................................................... 9
Figure 3. Control Board Detail .............................................................................................................. 11
Figure 4. Wall Mount Detail.................................................................................................................. 15
Figure 5. Thermostat Wiring Diagram .................................................................................................. 17
Tables
Table 1 Summary Ratings ..................................................................................................................... 6
Table 2 Electrical Characteristics.......................................................................................................... 6
Table 3 Unit Load Amps ....................................................................................................................... 6
Table 4 Air Flow ................................................................................................................................... 6
Table 5 ECUA12 Total & Sensible Cooling Capacity .......................................................................... 6
Table 6 Voltage Limitations ................................................................................................................ 13
Table 7 Maximum Static Pressure ...................................................................................................... 14

5ICE CFA1012A I&O Manual 01/2021 New
Chapter 1 Description & Specications
1.1 General Description
The ICE CFA1012A line of environmental control units (ECU) is designed for the telecommunication
cabinet and shelter. Below are some of the features of the unit.
• The CFA1012A is available in a cooling capacity of 12,000 BTUH.
• Cabinet has powder coated nish for long term durability.
• Dry contacts are available for remote monitoring of lockout due to a high or lower pressure.
• Low ambient operation provided by condenser fan cycle control.
• 3.6 kW electric strip heat is standard.
• The ICE CFA1012A is safety listed by ETL. All units are manufactured and tested to UL 1995
current edition and CAN/CSA-C22.2 No. 236 2nd Ed.
The operating functions of the CFA1012A line are described below.
Cooling - Mechanical cooling is provided.
Heating - A 3.6 kW electric resistant heater (standard) operates to provide heating as required.
1.2 Model Identication
The model identication number is found on the data sticker. Rating plate located on side panel.
Example C F A 1 0 1 2 A A 0 3 6 A + + 1 + 3 D A + A 1 1 + + + + + +
Position 1234567891011 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
1Unit Designation/Family C = Industrial Climate Engineering (ICE)
2Energy Efciency Ratio (EER) F= EER <9
3Refrigerant Type A = R-410a
4Compressor Type/Quantity 1 = Single
5Unit Capacity/Nominal
Cooling (BTUH) 012 = 12,0006
7
8System Type A = Air Conditioner
9Power Supply (V-Ph-Hz) A= 208/230-1-60
10 Heat Designation
@ Rated Voltage
KW = Kilowatt
036 = 3.6KW11
12
13 Ventilation Conguration A = Solid Front Door
14 Dehumidication + = None
15 Controls + = None
16 Operating Condition 1 = Low Ambient w/FCC
17 Indoor Air Quality
Features + = None
18 Air Flow 3 = Bottom Supply/Top Return (Counter)
19 Compressor
Location D= Left Hand
20 Filter Option A = 2” Pleated (MERV 8)
21 Corrosion Protection + = None
22 Engineering
Revision Level A1
23
24 Cabinet Color 1 = Beige
25 Sound Attenuation + = None
26 Security Option + = None
27 Fastener/Drain Pan
Option + = None
28 Unused + = None
29 Unused + = None
30 Special Variation + = None
1.3 Serial Number Date Code
A = January E = May J = September D = 2014
B = February F = June K = October E = 2015
C = March G = July L = November F = 2016
D = April H = August M = December

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1.4 Electrical Ratings and Performance Data
ELECTRIC HEAT 036 = 3.6 kW
BASIC MODEL VOLTAGE / PHASE / HZ CKT #1
MCA MFS
CFA1012A 208-230/1/60 19.7 20
MCA =Minimum Circuit Ampacity (Wire Sizing Amps) MFS = Max. Fuse Size or HACR circuit breaker
Table 1. Summary Ratings
BASIC MODEL COMPRESSOR OUTDOOR MOTOR INDOOR MOTOR
TYPE VOLTS-HZ-PH RLA LRA MCC VOLTS-HZ-PH RPM FLA HP VOLTS-HZ-PH RPM FLA HP
CFA1012A Rotary 208/230-60-1 6.3 29.0 9.8 208/230-60-1 1050 0.50 1/15 208/230-60-1 1600 0.95 1/8
RLA = Rated Load Amps LRA = Locked Rotor Amps MCC = Maximum Continuous Current RPM = Revolutions per Minute
FLA = Full Load Amps HP = Horsepower
Table 2. Electrical Characteristics
BASIC MODEL
NUMBER
VOLTAGE
HERTZ PHASE
CURRENT AMPS LOAD OF RESISTIVE HEATING
ELEMENTS ONLY (AMPS)
TOTAL MAXIMUM HEATING
AMPS (STANDARD UNIT)
AC UNIT IBM 3.6 kW 3.6 kW
CFA1012A 208/230-60-1 7.75 0.95 15.00 15.95
IBM = Indoor Blower Motor
Table 3. Unit Load Amps
CFM @ ESP (Dry Coil)
Model .00 .05 .10 .15 .20 .25
CFA1012A 510 470 450 420 390 360
CFM = Cubic Feet/Minute Indoor Air Flow
ESP = External Static Pressure in Inches WG
Note: Follow local codes and standards when designing duct runs to deliver the required airflow. Minimize noise
and excessive pressure drops caused by duct aspect ratio changes, bends, dampers and outlet grilles in duct runs.
Table 4. Air Flow
Data based upon 80°F Dry Bulb/ 67°F wet bulb return air temperature at Various Outdoor Temperatures. Airflow at 450 CFM
Outdoor temperature 70°F 75°F 80°F 85°F 90°F 95°F 100°F 105°F 110°F 115° 120°F
Total cooling (BTUH) 10,570 10,370 10,170 9,975 9,788 9,600 9,165 8,730 8,105 7,480 6,860
Sensible Cooling (BTUH) 6,930 6,860 6,790 6,720 6,655 6,590 6,435 6,280 6,065 5,850 5,640
Data based upon 26.5°C Dry Bulb/ 19.5°C wet bulb return air temperature at Various Outdoor Temperatures. Airflow at 760 m3/hr.
Outdoor temperature 21°C 24°C 26.5°C 29°C 32°C 35°C 38°C 40.5°C 43.3°C 46° 48.4°C
Total cooling (kW) 3.10 3.04 2.98 2.92 2.87 2.81 2.69 2.56 2.37 2.19 2.01
Sensible Cooling (kW) 2.03 2.01 1.99 1.97 1.95 1.93 1.89 1.84 1.78 1.71 1.65
Table 5. Total & Sensible Cooling Capacity

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15-1/2"
394 mm
20-1/4"
514 mm
58"
1473 mm
Front
Back
CONDENSER
AIR OUTLET TOP
12"
305 mm
19-7/8"
505 mm
8-3/16"
208 mm
13/16"
21 mm
Left Side
CONDENSER
AIR OUTLET
BOTH SIDES
CONDENSER
AIR IN
7-3/4”
197 mm
1-31/32”
50 mm
15-1/2”
394 mm
Mounting Bracket
BACK OF
UNIT
ECUA12
SLIMPAC
1-1/2"
38 mm 15"
381 mm
1-5/8"
41 mm
1-7/8"
48 mm
1-7/8"
48 mm
14-3/8"
365 mm
57-7/8"
1470 mm
11-3/4"
298 mm
56-3/8"
1432 mm
19-1/4"
489 mm
2-3/8"
60 mm
8-5/8"
219 mm
7/8” (22 mm) DIA 1/2” (13 mm) ELECTRICAL
2"
51 mm
5"
127 mm
18-1/4"
464 mm
1-1/8"
29 mm
3/8” (10 mm)
1-1/2” (38 mm)
13-1/4"
337 mm
4-1/2”
114 mm
4-1/2”
114 mm
8”
203 mm
8”
203 mm
Weight
CFA1012A 160 lbs/73 kg
Figure 1. Dimensional Data

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1.5 General Operation
Refrigerant Cycle (Cooling Mode)
The CFA1012A uses R-410A refrigerant in a conventional vapor-compression refrigeration cycle to
transfer heat from air in an enclosed space to the outside. A supply blower assembly pulls indoor air
across the evaporator. Liquid refrigerant passing through the evaporator is boiled into gas by heat removed
from the air. The warmed refrigerant gas enters the compressor where its temperature and pressure are
increased. The hot refrigerant gas condenses to liquid as heat is transferred to outdoor air drawn across the
condenser by the condenser fan. Liquid refrigerant is expanded into the evaporator through the metering
device to repeat the cycle.
Cooling Mode: The compressor and condenser fan are energized with a contactor controlled by a 24 VAC
pilot signal (see Figures 2a and 2b). The outside fan or blower motor is controlled by the head pressure
control (see head pressure control, section 1.7). The supply air blowers are energized by the blower relay.
Heating Mode: A wall-mounted thermostat controls the heating cycle of models which incorporate
resistance heating elements. On a call for heat, the thermostat closes the heat relay to energize the indoor
blower and the resistance elements.

9ICE CFA1012A I&O Manual 01/2021 New
1.6 Electrical Diagrams
Figure 2. Typical Electrical Schematic

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1.7 Electronic Control Board Mode of Operation
Normal
24 VAC power must be continuously applied to “R” and “C”. Upon a call for cooling “Y” and with the
high pressure switch (HPS) closed, the compressor will be energized. (Note: See the delay on make
feature.) The compressor will remain energized during the 3 minute timed low pressure by-pass cycle. If
the low pressure switch (LPS) is open after the 3 minute by-pass cycle, the compressor will de-energize.
Lock-out
If either of the fault conditions (LPS or HPS) occurs twice during the same call for cooling, the control
board will enter into and indicate the lockout mode. In the lockout mode, the compressor is turned off.
If there is a call for indoor air ow “G”, the blower remains energized, the alarm output is energized and
the status LED will blink to indicate which fault has occurred. When the lockout condition is cleared, the
unit will reset if the demand for the thermostat is removed or when the power is reset. With the control
board, the user can now have either normally closed or normally open remote alarm dry contacts. The
air conditioners are factory wired to be normally open.
Delay on Break
If the compressor is de-energized due to a loss of a cooling “Y” call or the rst fault, the unit re-start
will be delayed 3 minutes from the time the contactor is de-energized. (Note: There is no delay on
break if the lockout condition is reset.)
Delay on Make
On initial power up only, the unit will wait 0.03 to 10 minutes from the cooling “Y” call before al-
lowing the contactor to energize. The delay can be adjusted by the DOM wheel on the board. Factory
recommended wait is 3 minutes.
Low Pressure By-Pass Time
When starting, the low pressure switch (LPS) fault condition will be by-passed for 3 minutes before
the contactor is de-energized.
Post Purge
Upon a call for indoor airow “G” the blower will energize immediately. When in the cooling mode,
the blower will remain energized for 10 to 90 seconds (adjustable) after the compressor has been de-
energized. The time period can be changed by fan purge wheel on the board. Factory setting is 90 seconds.
LED Indicator Lights
COLOR TYPE STATUS DESCRIPTION
Green Power Contstant On 24 VAC power has been applied
Red Status Contstant On Normal operation
Red Status 1 Blink High pressure switch has opened twice
Red Status 2 Blinks Low pressure switch has opened twice
Low Ambient Control
The low ambient control permits cooling when outdoor ambient temperatures are low. The control uses
a reverse-acting high pressure switch to cycle the condenser fan motor according to liquid refrigerant
pressure conditions. Switch closure and fan operation occurs when the pressure reaches 400 PSIG. The
switch opens again when the refrigerant pressure falls to 245 PSIG. Therefore, the outdoor fan always
starts after the compressor, and it will cycle frequently during normal operation at low outdoor
conditions.