Goodman CAUF, CAPF, CAPT, CHPF, CSCF User Manual

Service Instructions
ComfortNet
ASXC, DSXC, and GSXC Condensing Units,
with R-410A Refrigerant
Blowers, Coils, & Accessories
Split System Heat Pumps
This manual is to be used by qualified, professionally trained HVAC technicians only. Goodman does not assume any responsibility for property damage or personal injury due to improper service procedures or services performed by an unqualified person.
Copyright © 2015-2017 Goodman Manufacturing Company, L.P.
is a registered trademark of Maytag Corporation or its related companies and is used under license to Goodman Company, L.P., Houston, TX. All rights reserved.
RS6200007r14
December 2017
IMPORTANT INFORMATION
Pride and workmanship go into every product to provide our customers with quality products. It is possible, however, that during its lifetime a product may require service. Products should be serviced only by a qualified service technician who is familiar with the safety procedures required in the repair and who is equipped with the proper tools, parts, testing instruments and the appropriate service manual. REVIEW ALL SERVICE INFORMATION IN THE APPROPRIATE SERVICE MANUAL BEFORE
BEGINNING REPAIRS.
IMPORTANT NOTICES FOR CONSUMERS AND SERVICERS
RECOGNIZE SAFETY SYMBOLS, WORDS AND LABELS
WARNING
O
NLY PERSONNEL THAT HAVE BEEN TRAINED TO INSTALL, ADJUST, SERVICE OR
REPAIR (HEREINAFTER
MANUAL SHOULD SERVICE THE EQUIPMENT
BE RESPONSIBLE FOR ANY INJURY OR PROPERTY DAMAGE ARISING FROM
IMPROPER SERVICE OR SERVICE PROCEDURES
ASSUME RESPONSIBILITY FOR ANY INJURY OR PROPERTY DAMAGE WHICH MAY
RESULT
. IN
LICENSES TO SERVICE THE EQUIPMENT SPECIFIED IN THIS MANUAL, ONLY
LICENSED PERSONNEL SHOULD SERVICE THE EQUIPMENT
INSTALLATION, ADJUSTMENT, SERVICING OR REPAIR OF THE EQUIPMENT
SPECIFIED IN THIS MANUAL, OR ATTEMPTING TO INSTALL, ADJUST, SERVICE OR
REPAIR THE EQUIPMENT SPECIFIED IN THIS MANUAL WITHOUT PROPER
TRAINING MAY RESULT IN PRODUCT DAMAGE, PROPERTY DAMAGE, PERSONAL
INJURY OR DEATH
, “
SERVICE
”)
THE EQUIPMENT SPECIFIED IN THIS
. THE
MANUFACTURER WILL NOT
. IF
YOU SERVICE THIS UNIT, YOU
ADDITION, IN JURISDICTIONS THAT REQUIRE ONE OR MORE
. I
MPROPER
.
T
O PREVENT THE RISK OF PROPERTY DAMAGE, PERSONAL INJURY, OR DEATH, DO NOT STORE COMBUSTIBLE MATER IALS OR USE GASOLINE OR OTHER FLAMMABLE LIQUIDS OR VAPORS IN THE VICINITY OF THIS APPLIANC E.
To locate an authorized servicer, please consult your telephone book or the dealer from whom you purchased this product. For further assistance, please contact:
CONSUMER INFORMA TION LINE
GOODMAN® BRAND PRODUCTS
TOLL FREE
1-877-254-4729 (U.S. only)
email us at: customerservice@goodmanmfg.com
fax us at: (713) 856-1821
(Not a technical assistance line for dealers.)
Outside the U.S., call 1-713-861-2500.
(Not a technical assistance line for dealers.) Your telephone company will bill you for the call.
is a registered trademark of Maytag Corporation or its related companies and is used under license to Goodman Company, L.P., Houston, TX. All rights reserved.
email us at: customerservice@goodmanmfg.com
AMANA® BRAND PRODUCTS
TOLL FREE
1-877-254-4729 (U.S. only)
fax us at: (713) 856-1821
(Not a technical assistance line for dealers.)
2
IMPORTANT INFORMATION
SAFE REFRIGERANT HANDLING
While these items will not cover every conceivable situation, they should serve as a useful guide.
WARNING
REFRIGERANTS ARE H EAVIER T HAN AIR. THEY CAN "PUS H OUT" THE
OXYGEN IN YOUR LUNGS OR IN ANY ENCLOSED SPACE. POSSI BLE DIFFI CULTY IN BRE ATHIN G OR DEATH:
EVER PURGE REFRIGERANT INTO AN ENCLOSED ROOM OR SPACE. BY
N
LAW, ALL REFRIGERANTS MUST BE RECLAIMED.
IF AN INDOOR LEAK IS SUSPECTED, THOROUGHLY VENTIL ATE THE AREA
• BEFORE BEGINNING WORK.
IQUID REFRIGERANT CAN BE VERY COLD. TO AVOID POSSIBLE FROST-
L
BITE OR BL INDNESS, AVOID CONTACT W ITH REFR IGERANT AND WEAR
I
GLOVES AND GOGGLES. SKIN OR EYES, SEEK MEDICAL HELP IMMEDIATELY.
A
LWAYS FOLLOW
• AS POIS ONOUS GA S WILL BE PRODUC ED.
F LIQUID REFRIGERANT DOES CONTACT YOUR
EPA
REGULATIONS. NEVER BURN REFRIGERANT,
O AVO ID
T
WARNING
HE UNITED STATES ENVIRONME NTAL PROTECTION AGENCY ( "
T
HAS ISSUED VARIOUS REGULATIONS REGARDING THE INTRODUCTION AN D DISPOSA L OF REFRI GERANTS INTRODUC ED INTO T HIS UNIT . FOLLOW T HESE REGU LATIONS MAY HARM TH E ENVIRON MENT AND CAN LEAD TO THE H IMPOSI TION O F SUBSTAN TIAL FIN ES. MAY VARY BY JURISDICTION.
EPA OFFICE.
LOCAL
SHOULD QUEST IONS ARI SE, CO NTACT YOUR
THESE REGULATIONS
EPA
AILURE TO
F
WARNING
TO AVOID POSSIBLE EXPLOSION:
EVER APPL Y FLAME O R STEA M TO A REFR IGERAN T CYLINDE R. IF YOU
N
MUST HEA T A CYLIND ER FOR FAS TER CHARG ING, PARTI ALLY IMME RSE IT IN WARM WATER.
NEVER FILL A CYLINDER MORE THAN 80% FULL OF LIQUID REFRIG ERANT.
NEVER ADD ANYTHING OTHER T HAN R-22 TO AN R-22 CYLINDER OR
R-410A TO AN R-410A CYLINDER. THE SERVICE EQUIPMENT USED MUST
BE LISTED OR CERTIFIED FOR THE TYPE OF REFRIGERANT USED.
TORE CYLIN DERS IN A COOL, DRY PL ACE. NEVER US E A CYLIND ER
S
AS A PLATFORM OR A ROLLER.
WARNING
TO AVOID POSSIBLE EXPLOSION, USE ONLY RETURNABLE (NOT DISPOSABLE)
SERVICE CYLINDERS WHEN REMOVING REFRIGERANT FROM A SYSTEM.
ENSURE THE CYLINDER IS FREE OF DAMA GE WHICH COULD LEAD TO A
LEAK OR EX PLOS ION.
")
ENSURE THE HYDROST ATIC TEST DATE DOES NO T EXCEED 5 YEARS.
ENSURE THE PRESSURE RATING MEETS OR EXCEEDS 400 LBS.
WHEN IN DOUBT, DO NOT USE CYLINDER.
WARNING
WARNING
SYSTEM CONTAMINANTS, IMPROPER SERVICE PROCEDURE AND/OR PHYSICAL
ABUSE AFFECTING HERMETIC COMPRESSOR ELE CTRICAL TERMINALS MAY CAUSE DANGEROUS SYSTEM VENTING.
The successful development of hermetically sealed refrigera­tion compressors has completely sealed the compressor's moving parts and electric motor inside a common housing, minimizing refrigerant leaks and the hazards sometimes associated with moving belts, pulleys or couplings.
Fundamental to the design of hermetic compressors is a method whereby electrical current is transmitted to the compressor motor through terminal conductors which pass through the compressor housing wall. These terminals are sealed in a dielectric material which insulates them from the housing and maintains the pressure tight integrity of the hermetic compressor. The terminals and their dielectric embedment are strongly constructed, but are vulnerable to careless compressor installation or maintenance proce­dures and equally vulnerable to internal electrical short circuits caused by excessive system contaminants.
T
O AVOID POSSIBLE INJURY, EX PLOSION OR DEATH, PRACTICE SAFE
HANDLING OF RE FRIGERANTS.
In either of these instances, an electrical short between the terminal and the compressor housing may result in the loss of integrity between the terminal and its dielectric embed­ment. This loss may cause the terminals to be expelled, thereby venting the vaporous and liquid contents of the compressor housing and system.
A venting compressor terminal normally presents no danger to anyone, providing the terminal protective cover is properly in place.
If, however, the terminal protective cover is not properly in place, a venting terminal may discharge a combination of
(a ) hot lubricating oil and refrigerant (b ) flammable mixture (if system is contaminated
with air)
in a stream of spray which may be dangerous to anyone in the vicinity. Death or serious bodily injury could occur.
Under no circumstances is a hermetic compressor to be electrically energized and/or operated without having the terminal protective cover properly in place.
See Service Section S-17 for proper servicing.
3
PRODUCT IDENTIFICATION
s
ASXC 160241 AA
1 2 3 4,5 6 6 7 8,9
ComfortNet
Brand
A - Ama na® bra nd Maj or/Mi nor Revi si on
D - Deluxe Goodman® brand
G - Goodman® brand
Type 1 - 208/230V Single-Phase 60 Hz
S 3 - 208/230V Three-Phase 60 Hz
Split Sys tem
4 - 460V Three-Phase 60 Hz
Type
C: Condenser R-22
H: Heat Pump R-22 024 - 2 Tons
X: Condenser R-410A 036 - 3 Tons
Z: Heat Pump R-410A 048 - 4 Tons
060 - 5 Tons
Communication Feature
C: 4-Wi re Communicati on Ready
SEER
16 - 16 SEER
18 - 18 SEER
Engineering
Voltage
Nominal Capacity
4
PRODUCT IDENTIFICATION
A
=
ComfortNet
CAP F 1824 A 6 A
1 2 3 4 5,6,7,8 9 10 11,12
Brand Engineering*
C Indoor Coi l
Unit Application 2 = R-22
A Upflow/Downflow Coi l
H Horizontal A-Coil
Horizontal Slab Coil
S
Coated Coils
T
Nominal Width for Gas Furnace
A = Fits 14" Furna ce Cabinet
B = Fits 17-1/2" Furnace Cabi net
C =
Fits 21" Furnace Cabinet
D = Fits 24-1/2" Furnace Cabinet N
Does Not Apply (Horizontal Slab Coils
Major/Minor Revisions
Refrigerant Charge
4 = R-410A
6 = R-410A or R-22
Cabinet Finish
U Unpainted
PPainted
N Unpai nted Ca se
Expansion Device
FFlowrator T 4 - 5 Tons
Expansi on Valve 4 - 5 Tons
1824 =
3030 =
3131 =
3636 =
3642 =
3743 =
4860 = Factory-Installed Non-Adjustable
4961 =
Nominal Capacity @ 13 SEER
1-1/2 - 2 Tons
2-1/2 Tons
2-1/2 Tons
3 Tons
3 - 3-1/2 Tons
3 - 3-1/2 Tons
5
PRODUCT IDENTIFICATION
H
MB V C 12 00 A A 1
1,2 3 4 4 5,6 7 8 9
ComfortNet™
Brand
MB - Modular Blower 1: 208-230V/60Hz/1 P
Type A: First Seri es
Speed
V:
Communication Feature A: No Circui t Br eaker
C: 4-Wire Communication Ready
Airflow
12:
1200 CFM
16:
1600 CFM
20:
2000 CFM
B: Ci rcuit Breaker
Elect rical
Design Se ries
Circuit Breaker
Factory Heat
00 No Heat
6
PRODUCT IDENTIFICATION
A V P T C 1830 1 6 AA
1 2 3 4 5 6,7,8,9 11 12 13,14
ComfortNet™
Brand
A Airhandler
Unit Application
Vari a bl e Sp eed Motor
V
Cabinet Finish
U: Unpa inted
P: Painted 1 208/240V, 1 Phase, 60 Hz
N: Uncas ed
Expansion Device
F: Fl owrator
T: Expansion Valve
Communications
C: 4-Wire Communi cati on Ready
Multi-Position & Downflow Applications
Ceiling Mount & Wall Mount Applications
Maj or/Mi nor Revi si ons
1830 = 1-1/2 to 2-1/2 Tons
3137 = 3 Tons
4260 = 3-1/2 to 5 Tons
Engineering*
Refrigerant Charge
No Di git = R-22 Onl y
6 = R-410A or R-22
Electrical
Nominal Capacity
7
PRODUCT IDENTIFICATION
A
V
PTC18B1 4AA
1 2 3 4 5 6,7 8 9 10 11,12
ComfortNet™
Brand
A Si ngl e Piec e
Ai rhandl er
Unit Application
C Ceiling Mount PSC Motor 4 = R-410a
R Multi Position PSC Motor
S Multi Posi tion EEM Motor
W Wall Mount PSC/EEM Motor 1 208/240V, 1 Phase, 60 Hz
VMulti Position
Variable Speed Motor -
Communi cating
Cabinet Finish
U Unpainted
PPainted
NUncased
Expansion Device
FFlowrator 31 = 2 Tons
TExpansion Valve 33 = 1 1/2 - 2 Tons
Communications
ComfortNet
C
TM
Compatible
*Not used for inventory management
Nominal Capacity
Major/Minor Revisions
18 = 1-1/2 Tons
24 = 2 Tons
25 = 2 Tons
29 = 2 Tons
30 = 2-1/2 Tons
36 = 3 Tons
37 = 2 1/2 - 3 1/2 Tons
39 = 2 1/2 - 3 Tons
42 = 3-1/2 Tons
48 = 4 Tons
49 = 3 - 3 1/2 Tons
59 = 4 - 5 Tons
60 = 5 Tons
61 = 4 - 5 Tons
Engineering*
Refrige rant Charge
Electrical
Cabinet Width
B = 17-1/2"
C = 21"
D = 24-1/2"
All Airhandlers use DIRECT DRIVE MOTORS. Power supply is AC 208-230v, 60 hz, 1 phase.
8
PRODUCT IDENTIFICATION
ASXC16
MANA® BRAND SPLIT
A
Model/Rev Description
ASXC160 **1AA
AS XC160601BA Use ZPS49 compress or.
AS XC160481BA Smart Coi l® coil s
AS XC160(24/36)1BB Wi ring diagram updat ed wit h notes .
AS XC160(48-60)1BB Motor changed t o Nidec.
Introduces Amana® brand 2-stage 16 SEER condensing units with R-410A, communicati ng m o dels.
OMMUNICATING CONDENSERS R-410A 16 SEER
X-C
ASXC160 (2 4/36)1BC ASXC160 (4 8- 60) 1BC
ASXC160 (2 4/36)1BD ASXC160 (4 8- 60) 1BD
AS XC160(241, 481)B E Refrigerant charge reduction
AS XC160(24,36,48,60)1CA 16 SE ER 2-Stage AC Developm ent with improved performance.
Ultrat ec h® 2.0 c ompressor change.
Replaced P CB HR103 Communicating Heat P um p Control B oard wit h PCBHR104 Communicating Heat P um p Control Board.
ASXC18
MANA® BRAND SPLIT
A
Model/Rev Description
ASXC18**1AA
AS XC180(36/48/ 60)1AB Wi ring di agram updated wit h not es .
ASXC180 (3 6/48-60)1AC
Initial release of Amana® brand 2-st age 18 SEER condensing units with R-410A , communicati ng m o dels.
Replaced compressors ZP S 20K4EPFV230 with ZPS20K5E P F V130 and compressor ZPS30K4EPFV230 with ZPS30K5EPFV130.
OMMUNICATING CONDENSERS R-410A 18 SEER
X-C
ASXC180 (3 6/48/60)1AD
ASXC180 48 1BB
Replaced P CB HR103 Communicating Heat P um p Control B oard wit h PCBHR104 Communicating Heat P um p Control Board.
[Design Improvement]: Updating shared data for 18 SEER, 2-stage, 4 ton AC in com m unicating installat i ons. Releasi ng m inor revision for affec ted models
9
PRODUCT IDENTIFICATION
GSXC16
OODMAN® BRAND SPLIT
G
Model / Re v Description
GSXC160( 24/36/48/60)1CA
OODMAN® BRAND SPLIT
G
Model / Rev Description
GSXC180( 24/36/48/60)1BA
GSXC180481BB
OMM UNICA T IN G CONDENSERS R-410A 16 SEER
X-C
16 SEER 2-Stage AC Development wi t h i m proved performan c e.
GSXC18
OMM UNICA T ING CONDEN SERS R-410A 18 SEER
X-C
18 SEER 2-Stage AC Development with improved performance.
[Design Improvement]: Updating shared data for 18 SEER, 2-stage, 4 ton AC in communic a t i ng i nstall ations . Releasi n g m i no r revision for affect ed m odel s
10
PRODUCT IDENTIFICATION
DSXC16
ELUXE SPLIT
D
Model/Rev Description
DSXC160**1AA
DSXC160(24/36)1AB Wiring diagram updat ed with notes.
DSXC160(24/36)1AC DSXC160(48-60)1BC
DSXC160481BA Sm artCoil ® coils.
DSXC160601BA ZPS49K compress or.
DSXC160(48-60)1BB Motor c hanged t o Nidec.
DSXC160241AF DSXC160481BE
Initial release of Goodman® Deluxe brand 2-st age 16 S E ER condensing units with R­410A, communicating models.
Ult ratech® 2.0 compressor.
Refri gerant charge reduction
OMMUNICATING CONDENSERS R-410A 16 SEER
X-C
DSXC18
DELUXE SPLIT X-C
Model/Rev Description
DSXC18**1AA
DSXC180(36/48/60] 1AB W i ring di agram updat ed wit h not es.
DSXC18036AC
DSXC180(48-60)1AC Ult ratech® 2.0 compress or c hange.
Initial release of Goodm an® Deluxe brand 2-s tage 18 SEE R c ondens ing uni t s with R­410A, communic ating models .
Replaced c om pres sors ZPS20K4E P F V230 with ZPS20K5E P F V 130 and c om pres s or ZPS30K4EPFV230 with ZPS30K5EPFV130.
OMMUN ICATING CONDENSERS R-410A 18 SEER
11
PRODUCT IDENTIFICATION
Model/Rev Description
ASZC160**1AA
MANA® BRAND SPLIT
A
Introduces A m ana ® brand 2-stage 16 SE ER heat pum p u ni ts with R-410A, com municating m odel s.
OMMUNICATING HEAT PUMP R-410A 16 SEER
Z-C
ASZC16
ASZC160(24/36)1AB ASZC160(48/60)1AB
ASZC160(24-48)1AC ASZC160601BA
ASZC160(24-36])1AD ASZC160601BB
ASZC160(24-36)1AE
AS ZC160481A E Ult rat e ch® 2. 0 compres sor change.
ASZC160[24/36/48/60]1C A
Sanhua ( RA NCO) reversing valves
Releas e of mod el s with accum ul ators and crankcase heaters.
Mot or changed t o Ni dec.
Replaced compres sors ZPS20K4EP F V 230 wit h ZPS20K 5E P F V 130 and com pres s or ZPS30K4EPFV230 with ZPS30K5EPFV130.
Replac ed compres sors with Copeland's UltraTech™ 3 l i neup . Trans i tioned coils to 7mm. Offers improved performance.
ASZC18
Model/Rev Description
ASZC180**1AA
MANA® BRAND SPLIT
A
Introduces A m ana ® brand 2-stage 18 SE ER heat pum p u ni ts with R-410A, com municating m odel s.
OMMUNI CATING HEAT PUMPS R-410 A 18 SEER
Z-C
ASZC180601BC ASZC180601BB
ASZC180(36/48/60)1A B Relea se of models with accum ul ators and crankcase heaters.
ASZC180(36-4)]1AC ASZC180601BA ASZC180361AD
ASZC180[24/36/48/60]1C A
Ult rat e ch® 2. 0 compres sor change.
Sanhua ( RA NCO) reversing valves
Replac ed compres sors with Copeland's UltraTech™ 3 l i neup . Trans i tioned c oils to 7mm. Offers improved performance.
12
PRODUCT IDENTIFICATION
GSZC16
OODMAN® BRAND SPLIT
G
Model/Re v Description
GSZC160[24/36/48/60]
OODMAN® BRAND SPLIT
G
Model/Rev Descripti on
GSZC180[24/36/48/60]
OMMUN ICATING HEAT PUMP R-410A 16 SEER
Z-C
Replaced c om pres s ors with Copeland's UltraTech™ 3 l ineup. Transit i oned c oi ls to 7mm . O ffers improved performance.
GSZC18
OMMUNICATING HEAT PUMP R-410A 16 SEER
Z-C
Replac ed c om pressors wi t h Copel and's Ul t raTech™ 3 li neup. Transiti oned coils to 7m m. Offers i m proved performance.
13
PRODUCT IDENTIFICATION
DSZC16
ELUXE SPLIT
D
Model/Rev Description
DSZC16**1AA
DSZC160( 24 /36)1AB DSZC160( 48 /60)1AB
DSZC160( 24 - 48) 1 AC DSZC160601 BA
DSZC160( 24 - 48) ]1AD DSZC160601 BB DSZC160481 AE DSZC160601 BC
DSZC160( 24 - 36) 1 AE
Initial release of Goodman® brand Deluxe 2-st age 16 S E ER heat pump units with R­410A, communicating models.
Sanh ua (RANCO) revers i ng valves .
Release of models wi t h ac cumulators and crankcase heaters.
Ultrat ec h® 2.0 com pres sor change.
Replaced c om pres sors ZPS20K4E P F V230 with ZPS20K5E P F V 130 and c om pres s or ZPS30K4EPFV230 with ZPS30K5EPFV130.
OMMUN ICATING HEA T PUMP R-410A 16 SEER
Z-C
DSZC18
DELUXE SPLIT Z-C
Model/Rev Description
DSZC18**1AA
Initial release of Goodm an® brand Delux e 2-s t age 18 S E E R heat pum p unit s with R­410A, communic ating models .
OMMUN ICATING HEAT PUMP R-410A 18 SEER
DSZC180(36/ 48/ 60)1A B Sanhua (RANCO) reversing valves.
DSZC180361 AD
DSZC180( 36 - 48) 1 AC DSZC180601 BA
DSZC160( 24 - 48) 1 AD DSZC160601 BB
Replaced c om pres sors ZPS20K4E P F V230 with ZPS20K5E P F V 130 and c om pres s or ZPS30K4EPFV230 with ZPS30K5EPFV130.
Release of models wi t h ac cumulators and crankcase heaters.
Ultrat ec h® 2.0 com pres sor change.
AVPTC****14
SINGLE PIECE AIR HANDLER MULTIPLE-POSITION VA RIA BLE SPEED
AINTED TXV WITH 4 -WIRE COMMUNICATING CON TROL
P
Model/Rev Description
AVPTC183014AA AVPTC313714AA AVPTC426014AA
AVPTC183014AB AVPTC313714AB AVPTC426014AB
Initial release of 13 SEER air handler with communicating control and serial com m unicating indoor blower mot or.
Replaced P CBJA 10 c om m unicating air handler c ont rol board wit h P CB JA103.
14
PRODUCT IDENTIFICATION
AVPTC**14
SINGLE PIECE AIR HANDLER MULTIPLE-POSITION VARIABLE SPEED
AINTED TXV WITH 4-WIRE COMMUNICATING CONTROL
P
Model/Re v Description
AVPTC24B14AA AVPTC(30/36)C14AA AVPTC(42/48/60)D14AA
AVPTC48C14AA Updated S&R and travel labels.
Initial release of 13 SEER air handler with communicating control and serial comm uni cating indoor blower motor. Redes ign of AV PTC models to new ai r handler cabinetry. Incorporated 4-way, mult-position body utilized on ARTP/ASPt mdoels.
AVPTC(42/48/60)14AB
AVPTC60D14AC Serial plate update
AVPTC24B14AC AVPTC30C14AB
AVPTC25B14AA AVPTC29B14AA AVPTC31C14AA AVPTC37B14AA AVPTC37C14AA AVPTC37D14AA AVPTC49D14AA AVPTC59C14AA AVPTC59D14AA AVPTC61D14AA
AVPTC33C14AA AVPTC39C14AA AVPTC49C14AA
AVPTC35B14AA Introducing 2.5 and 3 Ton Air Handler product lines.
Redesign of AVPTC models to new air handler cabinetry. Incorporated 4-way, mul t ­position body utilized on ARTP/ASPt mdoels.
Heater Kit ai rflow update.
AV PTC Effi cienc y Upgrades The new A V P TC redesign will i ncorporat e t he upgrade blower, c oil pan and coi l design int e nded to inc rease effici en cy and standard i ze production.
Upgrade the current AVPTC C-49 cabinets to include 1. quality improvements captured in Ready15 design. 2.include redesi gned drain pan, Morrison blower hous i ng and Em ers on NXT Booster Charge Adjustable TXV.
AVPTC[31,37,39,49,59]C14AB AVPTC[37,59,61]D14AB
AVPTC[25,29, 37]B14AB AVPTC33C14AB AVPTC[31, 37,39,49,59]C14AC AVPTC49D14AB AVPTC[37,59,61]D14AB
AVPTC35B14AA
Revis ions because of New Heater kit s released
Air handler revisions due to us i ng an upgraded (thic ker with higher R value) Quietflex wrapper insulation.
The SR plate format i s chang i ng from SR075 to SR099 and in ord er to track t hi s chan ge a minor revision is nec essary.
15
PRODUCT IDENTIFICATION
MBVC
ODULAR BLOWER AIR HAN DLER V-MULT I-POSITION VARIABL E-SPEED
M
OMMUNICAT ING REA D Y W/4-WIRES
C
Model/Rev Description
MBVC1200AA1-AA MBVC1600AA1-AA MBVC2000AA1-AA
MBVC1200AA1-AB MBVC1600AA1-AB MBVC2000AA1-AB
MBVC1200AA1-AC MBVC1600AA1-AC MBVC2000AA1-AC
MBVC1200AA1-AD MBVC1600AA1-AD MBVC2000AA1-AD
MBVC[1200,1600,2000]A A 1-A E Release of MBR/MBVC Models (M inor Revisions) for 11th St Plant. - Dayton to Houston
Introducti on of module blower with variabl e s peed blower motor wit h t he new comm uni c at i ng c ont rol & s erial c om m unicating indoor blower motor.
Introducti on of a module blower with variable speed blower mot or wit h communic at ing cont rol & s eri al c om m unicating indoor blower motor. Replac es exist ing E m ers on motors (013M00111 & 013M00112).
Introducti on of a module blower with variable speed blower mot or wit h communic at ing cont rol & s eri al c om m unicating indoor blower motor. Quali t y improvement t o us e 0.75" Quiet Flex Insulation.
Introducti on of a module blower with variable speed blower mot or wit h communic at ing cont rol & s eri al c om m unicating indoor blower motor. Introduc es a new Communic ating Air Handler Control Board (PC).
MBVC[1200,1600,2000]AA1-AF
Add permanent s eali ng/ condensation-c ont rol upgrades t o all MB units and remove high­volt age knockout s
CAUF
INDOOR COIL A-UPFLOW/DOWNFLOW UNCASED FLOWRATOR
C-
Model/Rev Description
CAUF*****6AA Initial release of CAUF Dayton Upflow/ Downfl ow coil s . CAUF*****6BA Burr Oak Louvered Fin released in place of the Wavy Fin. CAUF****6*DA Replace d CAUF*****6DB Drain pan material c hanged.
CAUF1824A6RDB CAUF1824B6RDB
CAUF36***CA Redesign from 2 row to 3 row for performanc e im provement . CAUF3030(A/B)6RDB
CAUF3030(C/D)6RDB CAUF3131(B/C)6RDB
Manufact uring Loc at i on Change from Dayton t o Hous t on. Designated by "R".
Manufact uring Loc at i on Change from Dayton t o Hous t on. Designated by "R".
exi s ting copper coi ls and other ass ociated parts with aluminum components .
16
PRODUCT IDENTIFICATION
CHPF
-INDOOR COIL HORIZONTAL A-COIL PAINTED FLOWRATOR
C
Model/Rev Description
CHPF*****6AA Intial release of 13 S E E R CHPF horizont al A c oi l.
CHPF*****6BA
CHPF1824A6CA CHPF2430B6CA CHPF3636B6CA CHPF3642C6CA CHPF3642D6CA CHPF3743C6BA CHPF3743D6BA CHPF4860D6DA
CHPF1824A6CB CHPF2430B6CB CHPF3636B6CB CHPF3642C6CB CHPF3642D6CB CHPF3743C6BB CHPF3743D6BB CHPF4860D6DB
CHPF1824A6CC CHPF2430B6CC CHPF3636B6CC CHPF3642C6CC CHPF3642D6CC CHPF3743C6BC CHPF3743D6BC CHPF4860D6DC
Released B urr Oak Louvered Fin in place of the Wavy F i n. The rows changed by one, (i. e. 4 row to 3 row; 3 row to 2 row) where appli cable.
Louvered fins. Replaced copper tube hairpins wi t h al umi num hairpins.
Drain pan material change to a Decabromodipheny l E t her free resin.
Change to prepainted wrappers
17
PRODUCT IDENTIFICATION
CAPF
INDOOR COIL A-UPFLOW/DOWNFLOW PAINTED FLOWRATOR
C-
Model/Rev Description
CAPF*****6A A Initial release of CAPF Dayt on Upflow/Downflow coils . CAPF*****6B A Burr Oak Louvered Fin released in place of the Wavy F in. CAPF36***CA Redesigned for performance improvement from 2 row t o 3 row. CAPF* ****6DA Replaced exi sting c opper c oil s and other ass ociated parts with aluminum components . CAPF*****6DB Drain pan mat erial c hanged.
CAPF182 4A6DC CAPF182 4B6DC CAPF182 4C 6D C CAPF303 0A6DC CAPF303 0B6DC CAPF303 0C 6D C CAPF303 0D 6D C CAPF313 1B6DC CAPF313 1C 6D C CAPF313 7B6AB CAPF363 6A6DC CAPF363 6B6DC CAPF363 6C 6D C CAPF363 6D 6D C CAPF364 2C 6D C CAPF364 2D 6D C CAPF374 3C 6D C CAPF374 3D 6D C CAPF486 0C 6D C CAPF486 0D 6D C CAPF496 1C 6D C CAPF496 1D 6D C
Redesign t he wrapper for the CAPF t o provide increased eas e of ins tallati on.
C-
Model/Rev Description
CAPT3131B4BA CAPT3131C4BA
CAPT3743C4AA CAPT3743D4AA
CAPT4961C4AA CAPT4961D4AA
CAPT3131B4AB CAPT3131C4AB CAPT3743C4AB CAPT3743D4AB CAPT4961C4AB CAPT4961D4AB
18
INDOOR
CAPT
COIL
UPFLOW /DOWNFLOW PAINTED CASED FLOWRATOR W/TXV
A-
Initial release of coils with factory-installed, non-adjus table TXV . Single s t age A HRI ratings for CAPT3131 NTC combinat i ons .
Initial release of single s t age A HRI ratings for CAPT3743 NTC c ombi nat i ons .
Initial release of single s t age A HRI ratings for CAPT4961C4 NTC com binations.
Redesign t he wrapper for the CAPT to provide inc reased ease of inst all at i on.
PRODUCT IDENTIFICATION
CSCF
INDOOR COIL S-HORIZONTAL SLAB COIL C-UNPAINTED FLOWRATOR
C-
Model/Rev Description
CSCF*****6AA Initial release of 13 SEER CSCF horizontal slab coils. CSCF*****6BA
CSCF1824N6BB CSCF3036N6BB CSCF3642N6CB CSCF4860N6CB
CSCF1824N6CA CSCF3036N6CA CSCF3642N6CA CSCF4860N6CA
Burr Oak Louvered F in releas ed i n place of the Wavy Fin. Rows reduc ed by one where applicable.
Drain pan material changed.
Replaced c opper c oil s and other ass oc i at ed part s with alumi num components .
19
ACCESSORIES
ComfortNet™
ASXC/DSXC 16 ASXC/DSXC/GSXC 18
Model Description
ABK-20 Anchor B racket Kit X X X X X X X X
ASXC16024 DSXC16024
ASXC16036 DSXC16036
ASXC16048 DSXC16048
ASXC16060 DSXC16060
ASXC18024 DSXC18024 GSXC18024
ASXC18036 DSXC18036 GSXC18036
ASXC18048 DSXC18048 GSXC18048
ASXC18060 DSXC18060 GSXC18060
TX2N4A TXV Kit
TX3N4 TXV Kit
TX5N4 TXV Kit
CSR-U-1 Hard-start Kit
CSR-U-2 Hard-start Kit CSR-U-3 Hard-start Kit
1
FSK01A LSK02*
B1141643
* Contains 20 brackets; four brackets needed to anchor unit to pad. Installed on the indoor coil. Available in 24V legacy mode only. This feature is integrated in the communicating mode. This component is included in the CTK0*** communicating thermostat kit.
Freeze Prot ection Kit Liquid Line Solenoid
Valve
3
24V Transformer
XX
XX
XX X X
XX
XX
XX X X
XXXXX X X X
XXXXX X X X
XXXXX X X X
ASZC/DSZ C 16 ASZC/DSZ C 18
Model Description
ASZC16024 DSZC16024
ABK-20Anchor Bracket KitXXXXXXX
1
TX2N4 TX3N4 TX5N4
TXV Kit X
1
TXV Kit X X
1
TXV Kit X X X X CSR- U-1 Hard -star t Kit X X X CSR- U-2 Hard -star t Kit X X X X X X CSR- U-3 Hard -star t Kit X X X X
2
FSK01A
LSK02*
OT18-60A
B1141643
Freeze Protection KitXXXXXXX
Liquid Line Solenoid
Valve
Outdoor Thermostat/
3
Lockout Thermostat
4
24V TransformerXXXXXXX
XXXXXXX
XXXXXXX
ASZC16036 DSZC16036
ASZC16048 DSZC16048
ASZC16060 DSZC16060
ASZC18036 DSZC18036
ASZC18048 DSZC18048
ASZC18060 DSZC18060
20
* Conta ins 20 bracke t s; four brack et s needed to ancho r unit to pad
1
Field -installed, non-bleed, ex p ans i on valve k i t - Condensing unit s and heap pumps wi t h reciprocat i ng c o mp res sors require t he
use of s t art -assist com ponent s when used in conjunct i on with an indoor coil using a non-bleed the rmal expansion valve
refrigerant
2
Insta ll ed on t he i ndoor c oi l
3
Available in 24V l egacy mode onl y. This feature is integrat ed i n t he c om m uni c ating mode. Requi red for heat pum p appl ications
where ambient t em pe rat ure fall bel ow 0 °F with 50% or higher relat i ve humidit y.
4
This c om ponent i s incl uded in the CTK 0*** c omm unic at ing t hermost at kit.
ACCESSORIES
EXP ANSION VALVE KITS
1/4 FLARE CONNECTION
BULB TO BE LOCATED AT 10 OR 2 O'CLOCK
For Applications requiring
a field installed access fitting
EVAPORATOR COIL
EVAPORATOR COIL
1/4' F L A RE CONNECTION
SEAL SUPP L IE D W/ KIT
REMOVE BEFORE INSTALLI NG EXP ANS IO N VALVE
SUCTION LINE
BULB
EXPANSION VALVE
SUCTION LINE
EXPANSION VALVE
BULB
SEAL SUPPLIED W/ KIT
BULB TO BE LOCATED AT 10 OR 2 O'CLOCK
DISTRIBUTOR BODY
For Applications not requiring
a field installed access fitting
DISTRIBUTOR BODY
7/8" NUT
PISTON
SEAL
PISTON
SEAL
TAILPIECE
3/8"­SWEAT
TAILPIECE
3/8"­SWEAT
SEAL SUPPLIED W/ KIT
REMO VE BEFORE INSTALLING EXPANSION VALVE
SEAL SUPPLIED W/ KIT
7/8" NUT
21
ACCESSORIES
Wire Nut
FSK01A
FREEZE THERMOSTAT
KIT
Y
k
c
a
l
B
k
c
a
l
B
Wire Nut
Y
Install Line
Thermostat
Here
Install Line Thermostat
Here
B
l
a
c
B
l
Wire Nut
Wire Nut
Y
k
a
c
k
Y
22
ACCESSORIES
BLOWER
ELECTRIC HEAT KIT
NO HEAT
MBVC1200 AA-1* * MBVC1600 AA-1* * MBVC2000 AA-1* *
X = A llowable combinations
- = Restricted combinations
-XXXXXX- - -
-XXXXXX- - -
-XXXXX- X- -
ELECTRIC HEAT KIT APPLICATIONS - MBVC
HKR-03*
^ = Circuit 1: Single P hase for A ir Handler Motor Circuit 2: 3-Phase for HKR3 Heater Kits
HKR05-(C)'
HKR-06*
HKR-08(C)*
HKR-10(C)*
HKA-15C*
HK* SERIES ELETRIC HEA T KITS -
HKA-20C*
^HKR3-15*
^HKR3-20A
23
ACCESSORIES
ELECTRIC HEAT KIT APPLICATIONS - A VPTC
MODELS HKR-03* HKR-05*/-05C* HKR-06* HKR-08*/-08C* HKR-10*/-10C* HKR-15C* HKR-20C* HKR-21C* HKA-15C* HKA-20C*
AVPTC183014A* X X X AVPTC313714A* X X X
AVPTC426014A* X X X X X X X3 X3 X
* Revision level that may or may not be designated. C Circuit breaker option.
NOTE: When 8kW and 10kW heat kits are used with an AVPTC1830 and AVPTC3137, matched with 2- ton outdoor unit, see Note 1 below.
1
Set Heater Kit dip switches 9, 10 and 11 to 6kW setting (9-ON, 10-OFF,11-ON) to obtain 840 CFM.
2
This heater kit can only be used for ‘1000 CFM or higher’ applications.
3
This heater kit can only be used for ‘1200 CFM or higher’ applications.
1
X
1
X
1
X
1
X
--- --- --- --- ---
X 2 --- ---
2
X
X
3
X
24
ACCESSORIES
p
p
p
p
p
AVPTC**14**
Heat Kit Applications
Type / Model 24B14-A* 30C14-A* 36C14-A* 48C14-A* 42D14-A*
HKSX03XC X X X HKSX05XC XXXXXXX HKSX06XC XXXXXXX HKSX08XC XXXXXXX
HKSX10XC XXXXXXX HKSX15XF* XXXXX HKSX20XF* XXXXX
HKSC05XC XXXXXXX
HKSC08XC XXXXXXX
HKSC10XC XXXXXXX
HKSC15XA XXXXX
HKSC15XB XXXXX HKSC15XF* XXXXX HKSC19CA* X X HKSC19CB* X X
HKSC20DA XXX
HKSC20DB XXX
HKSCX20XF* XXXXX
HKSC25DC* XX
* Revision level that may or may not be designated.
Refer to the minimum airflow requirements for each of the heat kits.
AVPTC
48D14-A*
††
60D14-A*
†††
†For m atch u p wi th a 2 ton outdoo r uni t: Hea ter ki t ap pli caƟon shall not exceed 10 kW.
Airflow for 5 kW u
††For ma tch u
Airflo w for 5 kW u
†††For ma tch u
Airflo w for 5 kW u
** 3 kW heater kit is not applicable for this indoor application.
to 10 kW hea ter ki ts s hall be s et to 850 cfm speed tap of ON-ON-ON.
wi th a 3 ton ou tdoo r uni t: Hea ter ki t applicaƟon shall not exceed 15 kW.
to 15 kW hea ter ki ts s hall be s et to 1400 cfm speed tap of ON-ON-OFF.
wi th a 3.5 ton ou tdoo r uni t: Hea ter ki t applicaƟon shall not exceed 20 kW.
to 20 kW hea ter ki ts s hall be s et to 1620 cfm speed tap of ON-ON-OFF
25
ACCESSORIES
READY 15 AVPTC
Model AVPTC25B14 AVPTC29B14 AVPTC31C14 AVPTC33C14 AVPTC35B14 AVPTC39C14 AVPTC37B14 AVPTC37C14 AVPTC37D14 AVPTC49C14 AVPTC49D14 AVPTC59C14 AVPTC59D14 AVPTC61D14
HKSX03XC XX XX X
HKSX05XC XXXXXXXXXXXXXX
HKSX06XC XXXXXXXXXXXXXX
HKSX08XC XXXXXXXXXXXXXX
HKSX10XC XXXXXXXXXXXXXX
HKSC05XC XXXXXXXXXXXXXX
HKSC08XC XXXXXXXXXXXXXX
HKSC10XC XXXXXXXXXXXXXX
HKSC15XA XXXXXXXXXXX
HKSC15XB XXXXXXXXX XXXXX
HKSC15XF XXXXXXXX
HKSC19CA XXXX
HKSC19CB XXXXX
HKSC19CH X
HKSC20DA X
HKSC20DB XXX
HKSC20DH XX
HKSC20XF XXXX
HKSC25DA X
HKSC25DB X
26
PRODUCT DESIGN
This section gives a basic description of cooling unit opera­tion, its various components and their basic operation. Ensure your system is properly sized for heat gain and loss according to methods of the Air Conditioning Contractors Association (ACCA) or equivalent.
CONDENSING UNIT
The condenser air is pulled through the condenser coil by a direct drive propeller fan. This condenser air is then dis­charged out of the top of the cabinet. These units are designed for free air discharge, so no additional resistance, like duct work, shall be attached.
The suction and liquid line connections on present models are of the sweat type for field piping with refrigerant type copper. Front seating valves are factory installed to accept the field run copper. The total refrigerant charge for a normal installation is factory installed in the condensing unit.
ASXC, ASZC, DSXC, DSZC models are available in 2 through 5 ton sizes and use R-410A refrigerant. They are designed for 208/230 volt single phase applications.
ASXC, ASZC, DSXC, DSZC R-410A model units use the Copeland Scroll "Ultratech" Series compressors which are specifically designed for R-410A refrigerant. These units also have Copeland ComfortAlert diagnostics are integrated into the unitary (UC) control. These models are ComfortNetTM ready.
There are a number of design characteristics which are different from the traditional reciprocating and/or scroll com­pressors.
"Ultractech" Series scroll compressors will not have a dis­charge thermostat. Some of the early model scroll compres­sors required discharge thermostat.
"Ultratech" Series scroll compressors use "POE" or polyolester oil which is NOT compatible with mineral oil based lubricants like 3GS. "POE" oil must be used if additional oil is required.
The ASXC [16 & 18], ASZC [16 & 18], DSXC [16 & 18] and DSZC [16 & 18] series split system units use a two-stage scroll compressor. The two-step modulator has an internal unloading mechanism that opens a bypass port in the first compression pocket, effectively reducing the displacement of the scroll. The opening and closing of the bypass port is controlled by an internal electrically operated solenoid.
®
ComfortAlert diagnostics. The Copeland
The ZPS two-step modulated scroll uses a single step of unloading to go from full capacity to approximately 67% capacity. A single speed, high efficiency motor continues to run while the scroll modulates between the two capacity steps.
FIGURE A
A scroll is an involute spiral which, when matched with a mating scroll form as shown, generates a series of crescent shaped gas pockets between the two members.
During compression, one scroll remains stationary (fixed scroll) while the other form (orbiting scroll) is allowed to orbit
®
(but not rotate) around the first form.
As this motion occurs, the pockets between the two forms are slowly pushed to the center of the two scrolls while simultaneously being reduced in volume. When the pocket reaches the center of the scroll form, the gas, which is now at a high pressure, is discharged out of a port located at the center.
During compression, several pockets are being compressed simultaneously, resulting in a very smooth process. Both the suction process (outer portion of the scroll members) and the discharge process (inner portion) are continuous.
Some design characteristics of the Compliant Scroll com­pressor are:
• Compliant Scroll compressors are more tolerant of liquid refrigerant.
NOTE: Even though the compressor section of a Scroll compressor is more tolerant of liquid refrigerant, contin­ued floodback or flooded start conditions may wash oil from the bearing surfaces causing premature bearing failure.
27
PRODUCT DESIGN
• Compliant scroll compressors perform "quiet" shutdowns that allow the compressor to restart immediately without the need for a time delay. This compressor will restart even if the system has not equalized.
NOTE: Operating pressures and amp draws may differ from standard reciprocating compressors. This informa­tion can be found in the unit's Technical Information Manual.
CAPACITY CONTROL - COMFORTNET
TM
MODELS
During the compression process, there are several pockets within the scroll that are compressing gas. Modulation is achieved by venting a portion of the gas in the first suction pocket back to the low side of the compressor thereby reducing the effective displacement of the compressor. See Figure A. Full capacity is achieved by blocking these vents, increasing the displacement to 100%. A solenoid in the compressor, controlled by an external 24-volt ac signal, moves the slider ring that covers and uncovers these vents. The vent covers are arranged in such a manner that the compressor operates somewhere around 67% capacity when the solenoid is not energized and 100% capacity when the solenoid is energized. The loading and unloading of the two step scroll is done “on the fly” without shutting off the motor between steps. See Figure C below. The unloaded mode default was chosen for two reasons:
Molded Plug*
Line
Run Capacitor
Line
Internal Unloader Coil
24 vdc
*Rectifier is integrated on the UC PC B
FIGURE C
1. It is expected that the majority of run hours will be in the low capacity, unloaded mode.
2. It allows a simple two-stage thermostat to control capac­ity through the second stage in both cooling and possibly heating if desired.
18 to 28 volt ac. The coil power requirement is 20 VA. The external electrical connection is made with a molded plug assembly. This plug is connected to the Communicating Unitary Control PCB (UC PCB) which contains a full wave rectifier to supply direct current to the unloader coil.
COILS AND BLOWER COILS
MBVC blower cabinets are designed to be used as a two­piece blower and coil combination and can be utilized with the CAUF, CAPF and CAPT coils for upflow and downflow applications. The CACF and CHPF coils are designed for horizontal applications. This two-piece arrangement allows for a variety of mix-matching possibilities providing greater
flexibility. The MBVC blower cabinets use a variable speed motor that
maintains a constant airflow with a higher duct static. MBVC blower cabinets are approved for applications with cooling coils of up to 0.8 inches W.C. external static pressure. The MBVC models allow airflow trimming of +/-10%.
All units are constructed with R-4.2 insulation. In areas of extreme humidity (greater than 80% consistently), insulate the exterior of the blower with insulation having a vapor barrier equivalent to ductwork insulation, providing local codes permit.
AVPTC Multi-Position Air Handler
AVPTC is a multi-position, variable-speed air handler used with R-410A and are available in 2 to 5 ton sizes with optional 3 kW to 25kW electric heat kits available for field installation. The AVPTC unit’s blower design includes a variable-speed ECM motor and is compatible with heat pumps and variable­capacity cooling applications.
This appliance can be installed in the vertical or left horizontal position without modification. The horizontal right and downflow positions require product modification. This product is de­signed for zero inches (0 inches) clearance; however, ad­equate access for service or replacement must be consid­ered without removing permanent structure. This unit can be installed on a platform when deemed necessary.
In an attic installation a secondary drain pan must be provided by the installer and placed under the entire unit with a separate drain line properly sloped and terminated in an area visible to the owner. This secondary drain pan is required in the event that there is a leak or main drain blockage. Closed cell insulation should be applied to the drain lines in uncon­ditioned spaces where sweating may occur.
UNLOADER SOLENOID
A nominal 24-volt direct current coil activates the internal unloader solenoid. The input control circuit voltage must be
28
PRODUCT DESIGN
NOTE: AVPTC air handlers are factory-sealed to achieve a
2% or less leakage rate at 1.0" water gauge external duct static pressure.
Communicating Unitary Control (UC) PCB
The Communicating System Unitary Control PCB is a micro­processor-based control for heat pump and air conditioning condensing units with single-phase compressors up to 5 ton capacity operating on standard residential or Delta and Wye commercial power. The control incorporates the basic func­tionality of existing defrost controls, outdoor thermostats, contactors, compressor staging controls, short cycle con­trols, line voltage monitors, Comfort Alert™ or CoreSense Module (dependent upon which module you are using), two speed condenser fan relays and the Active Protection com­ponent of enabled thermostats. The control is designed to work as part of a fully communicating HVAC system with 4 wires. The control also supports legacy 24VAC thermostat inputs for Y1, Y2, O and 24VAC outputs for RVS, W1, and L for non-communicating systems. Outputs include compres­sor power, compressor stage select, and outdoor fan high and outdoor fan low speed. System inputs include high/low pressure switches, as well as thermistor inputs for outdoor coil temperature and outdoor air temperature.
29
SYSTEM OPERA TION
COOLING
The refrigerant used in the system is R-410A. It is a clear, colorless, non-toxic and non-irritating liquid. R-410A is a 50:50 blend of R-32 and R-125. The boiling point at atmo­spheric pressure is -62.9°F.
A few of the important principles that make the refrigeration cycle possible are: heat always flows from a warmer to a cooler body. Under lower pressure, a refrigerant will absorb heat and vaporize at a low temperature. The vapors may be drawn off and condensed at a higher pressure and tempera­ture to be used again.
The indoor evaporator coil functions to cool and dehumidify the air conditioned spaces through the evaporative process taking place within the coil tubes.
NOTE: The pressures and temperatures shown in the refrigerant cycle illustrations on the following pages are for demonstration purposes only. Actual temperatures and pres­sures are to be obtained from the "Expanded Performance Chart".
Liquid refrigerant at condensing pressure and temperatures, (270 psig and 122°F), leaves the outdoor condensing coil through the drier and is metered into the indoor coil through the metering device. As the cool, low pressure, saturated refrigerant enters the tubes of the indoor coil, a portion of the liquid immediately vaporizes. It continues to soak up heat and vaporizes as it proceeds through the coil, cooling the indoor coil down to about 48°F.
Heat is continually being transferred to the cool fins and tubes of the indoor evaporator coil by the warm system air. This warming process causes the refrigerant to boil. The heat removed from the air is carried off by the vapor.
As the vapor passes through the last tubes of the coil, it becomes superheated. That is, it absorbs more heat than is necessary to vaporize it. This is assurance that only dry gas will reach the compressor. Liquid reaching the compressor can weaken or break compressor valves.
The compressor increases the pressure of the gas, thus adding more heat, and discharges hot, high pressure super­heated gas into the outdoor condenser coil.
In the condenser coil, the hot refrigerant gas, being warmer than the outdoor air, first loses its superheat by heat trans­ferred from the gas through the tubes and fins of the coil. The refrigerant now becomes saturated, part liquid, part vapor and then continues to give up heat until it condenses to a liquid alone. Once the vapor is fully liquefied, it continues to give up heat which subcools the liquid, and it is ready to repeat the cycle.
HEATING
The heating portion of the refrigeration cycle is similar to the cooling cycle. By energizing the reversing valve solenoid coil, the flow of the refrigerant is reversed. The indoor coil now becomes the condenser coil, and the outdoor coil becomes the evaporator coil.
The check valve at the indoor coil will open by the flow of refrigerant letting the now condensed liquid refrigerant by­pass the indoor expansion device. The check valve at the outdoor coil will be forced closed by the refrigerant flow, thereby utilizing the outdoor expansion device.
COOLING CYCLE
For communicating room thermostat: When the room ther­mostat calls for either low stage cool or high stage cool, appropriate commands are sent via the data 1 and data 2 lines to the outdoor unit's UC control. The UC control energizes the on-board compressor relay and the on-board outdoor fan relay. The compressor high stage solenoid is energized if it is a high stage call.
The UC control sends a fan command to the indoor unit (air handler or furnace). The indoor unit operates the indoor blower at the appropriate airflow level. The system operates at the cooling level demanded by the thermostat.
When the thermostat is satisfied, appropriate commands are sent to the UC control. The compressor relay and outdoor fan relay is de-energized. The compressor high stage solenoid is de-energized if it was energized. The UC control sends an appropriate command to the indoor unit to de­energize the indoor blower motor.
If room thermostat fan status is set to be “on”, then indoor blower would run continuously rather than cycling with the compressor.
For heat pumps, the reversing valve is energized during the cooling cycle. The call for cooling from the communicating thermostat indicates to the control that the reversing valve is to be energized during cooling operation.
HEATING CYCLE
For communicating room thermostat: When the room ther­mostat calls for either low stage heat or high stage heat, appropriate commands are sent via the data 1 and data 2 lines to the outdoor unit's UC control. The UC control energizes the on-board compressor relay and the on-board outdoor fan relay. The compressor high stage solenoid is energized if it is a high stage call. The UC control sends a fan command to the indoor unit (air handler or furnace). The indoor unit operates the indoor blower at the appropriate airflow level. The system operates at the cooling level demanded by the thermostat.
When the thermostat is satisfied, appropriate commands are sent to the UC control. The compressor relay and outdoor fan relay is de-energized. The compressor high stage solenoid is de-energized if it was energized. The UC control sends an appropriate command to the indoor unit to de­energize the indoor blower motor.
30
Loading...
+ 78 hidden pages