International comfort products DFS2A318J2A, DFS2A324J2A, DFS2H318J2A, DFS2H324J2A Installation, Start-up And Service Instructions Manual

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Cooling Model DFS2A318J2A

DFS2A324J2A

Heat Pump DFS2H318J2A

DFS2H324J2A

Installation, Start-Up, and Service Instructions

CONTENTS SAFETY CONSIDERATIONS

SAFETY CONSIDERATIONS ...................... 1

GENERAL ..................................... 1-7

INSTALLATION .............................. 7-14

Indoor Unit Installation ........................ 7

Outdoor Unit Installation ........................ 9

Power Supply ................................ 10

Leak Test ..................................... 10

Wiring Diagrams ........................... 12-13

START-UP .................................... 14

System Checks ................................ 14

CARE AND MAINTENANCE ....................... 14

Outdoor Units ................................. 14

Indoor Units ................................... 14

To Clean the Indoor Unit Front Panel ............ 14

To Clean Indoor Coil ........................... 14

Air Filters for Indoor Units ...................... 14

SERVICE ....................................... 15

TROUBLESHOOTING ........................ 16-19

Page

421 01 9219 00 I

Installing, starting up, and servicing air-conditioning equipment can be hazardous due to system pressures, electrical components, and equipment location (roofs, elevated structures, etc.).

Only trained, qualified installers and service mechanics should install, start-up, and service this equipment.

Untrained personnel can perform basic maintenance functions such as cleaning coils. All other operations should be performed

by trained service personnel.

When working on the equipment, observe precautions in the literature mid on tags, stickers, mid labels attached to the equipment.

Follow all safety codes. Wear safety glasses and work gloves. Keep quenching cloth and fire extinguisher nearby when brazing.

Use care in handling, rigging, and setting bulky equipment.

51302618919-B NOV 06

DFS2A/H 2X09, 2X12

Duct Free Systems

Safety Labeling and Signal Words

DANGER, WARNING, CAUTION, and NOTE

The signal words DANGER, WARNING, CAUTION, and

NOTE are used to identifylevels of hazard serious- ness. The signal word DANGER is only used on

product labels to signify an immediate hazard. The

signal words WARNING, CAUTION, and NOTE will

be used on product labels and throughout this manu-

al and other manuals that may apply to the product.

DANGER - immediate hazards which will result in se-

vere personal injury or death.

WARNING - Hazards or unsafe practices which could

result in severe personal injuryor death.

CAUTION - Hazards or unsafe practices which may re-

sult in minor personal injury or product or property damage.

NOTE - Used to highlight suggestions which will result in

enhanced installation, reliability, or operation.

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal

injury or death.

Before installing or servicing system, always turn off main power to system and install lockout tag on disconnect.

There mav be more than one disconnect switch.

Signal Words in Manuals

The signal word WARNING is used throughout this

manual in the following manner:

The signal word CAUTION is used throughout this

manual in the following manner:

Signal Words on Product Labeling Signal words are used in combination with colors and/or

pictures on product labels.

GENERAL

These instructions cover the installation, start-up and servicing of DFC2A/DFC2H outdoor and DFF2A/DFF2H indoor units

cooling only and heat pump duct free systems. See Table 1 for parts included. See Tables 2 and 3 for Physical Data.

SYSTEM REQUIREMENTS

IMPORTANT: The Indoor units & the inter units cable voltage is 30 VDC.

IMPORTANT: Each refrigerant line must be insulated Separately. See line sizing requirements in able 2.

• Consult local building codes and National Electrical Code (NEC, U.S.A.) for special installation requirements.

Max. cable length. Total voltage drop should not exceed 1V. Therefore max. length:

For #18 AWG 24.3 Feet (7.4 m) For #16 AWG 37.7 Feet (11.5 m) For #14 AWG 50.0 Feet (18 111)

• Use only type "G" or "C" fuses. Use single length power cable without extension. Allow sufficient space for airflow

clearance on condensing units for wiring, refrigerant piping, and servicing unit. See Fig. 1 and 2 for minimum required

distances between unit and walls or ceilings.

• Indoor and outdoor units should be installed at a Mini- mum length of 10 ft. apart. Maximum line length of 50 ft.

and veltical separation of 30 ft.

• Do not install indoor units near a direct source of heat such as direct sunlight, steam or flame.

UNTF COMPONENT DAMAGE

Failure to follow this caution may result in damage to unit

components.

Do not bu_ more than 36 in. of refrigerant pipe in the ground. If any section of pipe is buried, there must be a 6 in. vertical

rise to the valve connections on the outdoor units. If more than

the recommended length is buried, refrigerant may migrate to the cooler buried section duNlg extended periods of system

shutdown.

Fig, 1 -- DFC2A/H318, 324 Outdoor Unit Clearances

Table 1--Parts List -- High Wall Units

ITEM QTY

Mounting Bracket

Long Screws

Outdoor Sensor

Connecting

Cable

Absorption Cushions

Electric Terminals

DIAGRAM

2X1

DFF2A/DFF2H 09, 12

2X8

2X1

(Available for HEAT PUMP ONLY)

2X8

Remote Controller

Mounting Bracket

Remote Controller

and Batteries

Insulation for

Indoor Fittings

Owner's Manual

1 Mounting

Bracket with 2 screws

2X1

Wall-mounted

Receiver RTX

(OPTIONAL)

(Not Included)

NADA001TW

Table 2--Physical Data - Cooling Only

INDOOR UNIT 2 X DFF2AH12JIA

COOLING CAPACITY (Btuh) SEER 2 X 11,400

SYSTEM CHARGE (Ib)* 2 X 3.1

MOISTURE REMOVAL (pt/hr) 2 X 4.5

AIRFLOW (3 Speeds) 2 X 350 / 2 X 280 / 2 X 220

High / Med. / Low Cfm DIMENSIONS LxHxW (in.) 32 3/32x10 15/64x7 9/32 32 3/32x10 15/64x7 9/32

REFRIGERANT TYPE R-22 R-22 NET WEIGHT (Ib) 2 X 19.0 2 X 19.0

OUTDOOR UNIT

TUBE CONNECTIONS Vert Lift/Vert Drop/Max Length (ft)

NOMINAL LINE SIZING Mixed Phase...Suction (in.)

COMPRESSOR TYPE DIMENSIONS LxHxW(in.)

NET WEIGHT (Ib) METERING TYPE

LEGEND

2 X DFF2AH09JIA

2 X 9,000

13.0 2X2.4 2X2.6

2X350/2X280/2X220

DFC2A318J2A DFC2A324J2A

30/30/50 30/30/50

1/4...1/2 1/4...1/2

Panasonic-2R13S126A6F Panasonic-2P17SR126B1A

35.5 X 49.5 X 12.6 35.5 X 49.5 X 12.6 226 228

Piston (Accurator) Piston (Accurator)

Accurator is non-serviceable

13.0

SEER -- Seasonal Energy Efficiency Ratio *Units are shipped with a factory charge based on 25 ft of refrigerant lines.

Table 3_Physical Data - Heat Pump

INDOOR UNIT 2 X DFF2AH09JIA 2 X DFF2AH12JIA

COOLING CAPACITY (Btuh) 2 X 9,000 2 X 11,400

SEER 13.0 13.0

HEATING CAPACITY (Btuh) 17,200 23,600

HSPF 7.7 7.7

SYSTEM CHARGE (Ib)* 2 X 2.4 2 X 3.1

MOISTURE REMOVAL (pt/hr) 2 X 2.6 2 X 4.5

AIRFLOW (3 Speeds) 2 X 350/2 X 280/2 X 220 2 X 350/2 X 280/2 X 220

High / Med. / Low Cfm

DIMENSIONS LxHxW (in.) 32 3/32x10 15/64x7 9/32 32 3/32x10 15/64x7 9/32 REFRIGERANT TYPE R-22 R-22

NET WEIGHT (Ib) 2 X 19.0 2 X 19.0

OUTDOOR UNIT

TUBE CONNECTIONS

Vert Lift/Vert Drop/Max Length (ft)

NOMINAL LINE SIZING

Mixed Phase...Suction (in.)

COMPRESSOR TYPE DIMENSIONS LxHxW(in.)

SHIPPING WEIGHT (Ib) METERING TYPE

LEGEND Accurator is non-serviceable

DFC2A318J2A DFC2A324J2A

30/30/50 30/30/50

1/4...1/2 1/4...1/2

Panasonic-2R13S126A6F Panasonic-2P17SR126B1A

35.5 X 49.5 X 12.6 35.5 X 49.5 X 12.6 226 228

Piston (Accurator) Piston (Accurator)

HPSF -- Heating Seasonal Performance Factor SEER -- Seasonal Energy Efficiency Ratio

*Units are shipped with a factory charge based on 25 ft of refrigerant lines, NOTE: Standard Ambient Operating Limitations - 55 [_F to 125 0F (12.7 [_C to 51.6 [_C).

NOTES:

ICP

I. DIMENSIONS IN INCHES, [ ] ARE IN MILLIMETERS - DO NOT SCALE. 2, _ DIRECTION OF AIR FLOW. 3, REFRIGERANT, DRAIN AND POWERCONNECTIONS

MAY BE MADEREAR (LEFT OR RIGHT), LEFT SIDE, RIGHT SIDE, OR BOTTOMLEFT.

[TOP VIEW]

- 3.94 [I00] MIN.

/ \

[I00] MIN. 11.81 [300] MIN.

MINIMUM CLEARANCE FOR SERVICE AND AIR FLOW

INLET AIR

I I I I I I I I I I I

[ LEFTSIDEVIEW

F]LTERS

(OPEN COVER FOR ACCESS)

IFRONTVIEWI

IRIGHT SIDE VIEW J

3.0 DIA [76] A

FOR REFRIGERANT, DRAIN,

POWERAND SIGNAL LINES

-EVAPORATOR COIL

INLET AIR

I_ COOLING

BEAF_NG%

NOCKOUT FOR LEFT SIDE

REFRIGERANT, DRAIN, POWER AND SIGNAL LINES

IIIIAIRS_II

"A" LINFRARE[ REMOTEOVERRIDE SWITCH

DRAIN 0.625 [15.B] - 2B'FLEX BOSE,

MALE BARB CONNECTION (PLASTIC)

[BOTTOM VIEW]

i SUCTION LINE CONNECTION

"G" MALE FLARE

I_L_

I' _ J rJ L_OU_OUNECONNECTION

"H" MALE FLARE

KNOCKOUTFOR BOTTOM REFRIGERANT,DRAIN,POWER AND SIGNAL LINES

KNOCKOUT FOR RIGHT SIDE REFRIGERANT, DRAIN, POWER

lAND SIGNAL LINES

o o

z 0

I A I B E C I D I E I F I G I Ji I J2 I

UNIT SIZE

DFC2A318J2AI 4_n I 43 ln_ t _gR 796177F

DFC2A324J2AI49_36 I 4.3 t69 I 28.6 Z261 7.7_

DFC2H324J2A " "

ICP

,971 I 641 ,410, 612261 0 ,

oi ,;

I _ w

I '

AIR DISCHARGE

Mim TOP VIEW

6" [0,15M]

Min.

2' [0.6M]

,,g _,

LM MJ

FRONT VIEW

MINIMUM CLEARANCE_ SEE NOTE 1

"A"

0.7

[18MM] --

NOTES: 1 REQUIRED CLEARANCES, WITH COIL FACING WALL -ALLOW 6 MINIMUM

1 1 WITH COIL FACING WALL - ALLOW 6 MINIMUM CLEARANCE ON COiL SIDE & END

AND 2 FEET MINIMUM CLEARANCE ON COMPRESSOR END FAN SIDE

12 WITH FAN FACING WALL -ALLOW 2 MINIMUM CLEARANCE ON FAN SIDE AND 6 ON COIL END,

AND 2 FEET MINIMUM CLEARANCE ON COMPRESSOR END COiL SIDE 13 ALLOW 2 FEET MINIMUM CLEARANCE OVER THE TOP OF UNIT 14 WITH MULTI-UNITAPPUCATtON, ARRANGE UNITS SO DISCHARGE OF ONE DOES NOT ENTER INLET OF

OTHER 2 DIMENSIONS iN PARENTHESIS ARE IN METRIC 3 BRACKET WITH 1 125 DiA HOLE FOR FIELD POWER SUPPLY

FIELD POWER CONNECTION &

CONTROL CONNECTION

UNDER THIS COVER

"P' DIA. VAPOR LINE ::

FLARESERVICECONNECTIONPORT N _ _

.25" FLARE CONNECTION _ 31

SERVICE PORT _. (FROM LIQUID LINE) _1_ t

.25" FLARE CONNECTION_ _/_t_i "-_

"R" DIA. LIQUID LINE __

FLARE CONNECTION : ---1

P" DIA. VAPOR LINE

FLARE CONNECTION

SERVICE PORT 31

25' FLARE CONNECTION _

SERVICE PORT

(FROM LIQUID LINE)

.25" FLARE CONNECTION

"R" DIA. LIQUID LINE __ . FLARE CONNECTION

-- SEE NOTE 3

°TYP

"K2"

"J2 .... M"

=TYP

"KI"

VIEW '_A'_

_EJ _> o-I _m o o_

mcm

Zoo mc

co m o m co

, rn

4. If refrigerant line route no. 1,2 or 4 are used, use a small saw blade to carefully remove the corresponding plastic

covering on the side panel.

5. Run the outdoor sensor cable, electrical cable, refrigerant lines, and drainage tube through the hole.

6. Fill the remaining wall hole gap with an appropriate seal- ant material.

Fig. 2 -- Indoor Unit Clearances

INSTALLATION

Plan the installation carefully to avoid component failures and make installation easier.

Indoor Unit Installation

REFRIGERANT LINE ROUTING -- The refrigerant lines may be routed in any of the four directions shown in Fig. 3.

INSTALL THE MOUNTING BRACKET

1. Carefully remove the mounting bracket, which is con- nected to the back of the indoor unit's base with screws.

2. Position the mounting bracket on the wall and level it us- ing a spirit level (see Fig. 2 for minimum required clear- ance distances).

3. Mark the four drilling holes on the wall, as they appear in Fig. 4.

4. Drill the holes, insert the wall plugs and use four long screws to attach the mounting bracket to the wall.

5. Check that the bracket is leveled and securely fastened to the wall.

DRILL A HOLE IN THE WALL FOR DRAINAGE AND INTER-UNIT CONNECTIONS

To make the connections between the indoor and outdoor units, drill a 2.5-in. hole through the wall for the refrigerant lines,

drainage hose and control cable passage as shown in Fig. 5.

1. Mark the center of the hole to be drilled according m the re- fiigerant line routblg used and dimensions shown in Fig. 4.

2. Make sure to drill outwards and downwards, so that the opening in the outside wall is at least 1/2" lower than the

opening on the inside.

3. Make sure the drainage hose is at the bottom side of the hole.

Fig. 3 -- Refrigerant Lines

09, 12

G-2

09, 12

G-2 ALL DIMENSIONS ARE iN mm

Fig. 4 -- Mounting Bracket DFF2A/DFF2H 09, 12

ALL DIMENSIONS ARE IN inches

(Optiona_ for NEAT PBNP BYSTEfB$}

OUTDOOR SENSOR CABLE REFRIGERANT

\ LINES

_ t/2.1N. MIN

INDOOR _.tl] OUTDOOR ELECTRICAL

- - _ - - CABLE TUBE

Fig. 5 -- Drill Holes

_T_lrAI -- DRAINAGE

WIRE THE INDOOR UNIT

1. Strip the cables back 1/4 inch.

2. Remove the unit's front panel by lifting the lower part and pulling it gently outward and upward. See Fig. 6.

3. Remove the two screws from the control box cover and take off the cover. See Fig. 7. Save the screws to reassem-

ble.

NOTE: In general wiring the indoor unit does not require the removal of the grille frame but in case of need do as follow:

4. Remove the two screws from the air discharge opening. Save the screws to reassemble. See Fig. 7A.

• Pull downwards and outwards on the bottom of the grille and gently raise the frame of the top of the unit.

• Once all covers are off, mount the unit onto the wall mount- ing bracket. See Fig. 8.

NOTE: Leave covers off until after the Making Drainage Connections section.

• Route the interconnecting unit's electric cable and the out- door sensor cable towards the lower right hand corner of the

indoor unit.

• Make sure that the wires are connected in accordance with the wiring diagram on the inside of the unit front cover or

within this instruction manual.

• Secure the control cables to the strain relief.

• For heat pump systems only, connect the outdoor sensor TH3 to its mating black terminal. See Fig. 9.

• /

Fig. 6 -- Remove Grille Insert

Fig. 7 -- Remove Control Cover

Fig. 7a -- Remove the screws from the air discharge

opening.

Mount the indoor unit on the mounting bracket

FIRE HAZARD Failure to follow this warning could result in personal

injury, death and or property damage. Make sure that all wires and screws are firmlv fastened.

REASSEMBLE

1. Connect the display connector to the display panel printed circuit board.

2. Put the control box cover and grille frame back on using the appropriate screws (Steps 3 and 4 of Wire the Indoor Unit section). Put the grille insert back on.

Model-2 X 12 DIP Switches location

Model-2 X 09 DIP Switches location

Model-2 X 12 DIP Switches location

Model-2 X 09 DIP Switches location

HEAT PUMP

(on the control box side)

HEAT PUMP

(on the control box side)

COOLING ONLY

(on the control box side)

COOLING ONLY

(on the control box side)

Standard Dip Switches status from the factory

_ili;

Gently push with the arrow direction

Fig. 8 -- Indoor Unit Mounting

Inter unit

terminal block

30VDC

Display

TH3

(Heat Pump Only)

Inter unit cable clamp

Fig. 9 -- Outdoor Sensor Connection

ATTACH THE REMOTE CONTROLLER MOUNTING

BRACKET

1. Use the two screws supplied with the controller to attach the mounting bracket to the wall in the location selected

by the customer (see Fig. 10).

2. Install batteries in the remote control.

3. Place remote control into remote control mounting brack- et.

4. For remote control operation, refer to the unit Owner's Manual.

REMOTE CONTROL

MOUNTING BRACKET

Fig. 10- Attach Mounting Bracket to the Wall

(OPTIONAL)

NADA001TW

Use only "L" type sealed, dehydrated copper refrigerant tubing. No other type of tubing may be used. Use of other types of tubing

will void the manufacturer's warranty.

Do not open service valves or remove protective caps from tubing ends until all the connections are made.

Bend tubing with special bending tools to avoid the formation of sharp bends. Take care to avoid kinks or flattening of the tubing.

Keep the tubing free of dirt, sand, moisture, and other contaminants to avoid damaging the refrigerant system.

Avoid sags in the suction line to prevent the formation of oil traps.

Insulate each tube with 3/8-in. walled thermal pipe insulation. Inserting the tubing into the insulation before

making the connections will save time and improve

installation The suction and mixed-phase lines should never come in direct contact.

POWER SUPPLY

HIGH/LOW

Fig. 11 --Wall Mounted Unit- RTX

Outdoor Unit Installation NOTE: The outdoor unit must be installed on a solid surface

(mounting base).

1. Place the rubber absorption cushions (supplied with the outdoor unit) under the unit's feet to prevent vibrations.

2. Fasten the outdoor unit legs to the mounting base, as shown in Fig. 12. The cushion goes between the legs and the mounting base.

3. Be sure that the unit is leveled.

MAKE REFRIGERANT PIPING CONNECTIONS (OUT- DOOR UNIT) -- To connect the refrigerant lines:

Make sure to properly identify and separate between the piping and control cables coming from indoor unit No. 1 and the piping

and cables coming from indoor unit No. 2

TH3 SENSOR

(HEAT PUMP ONLY)

METAL CONDUIT

CONNECTION PLATE

POWER SUPPLY

CABLE

INTER UNIT CABLE

4 ABSORPTION CUSHION TO

BE PUT UNDER EACH LEG

Fig. 12 -- Legs Mounting Base and Wiring Outdoor

Units

Models: DFC2A/H318J2A, DFC2A/H324J2A

PLASTIC CONTROL

COVER

INDOOR UNIT 2 X 09, 2 X 12

OFF ON ,_ T[MEI_

IR RECEIVER FILTER

Fig. 12A -- Indoor unit LED's and Wiring

AUTO/OFF

_=)FILTEJ

Operation push button for automatic operation (23°C/73°F),

turning the a/c OFF, canceling the malfunction indication,

and resetting the filter LED.

SERVICE LED

FLARING AND CONNECTING REFRIGERANT LINES

1. Remove the protective cap from the flare fitting.

2. Remove the protective cap from the tubing and cut to the required length. Be sure that the cut is perpendicular and

clean, without burrs.

3. Slip the flare nut on the tubing and flare the tube end using standard flaring tools.

4. Tighten the nut until resistance is met. Mark the nut and the fitting. Using a suitable wrench tighten an additional V4

turn. Use the following specified torque, according to con- nection size:

Mixed-Phase line: Suction line:

1/4 in.-(12.3 fit-lb.) 1/2 in.-(36 fit-lb.)

Both refrigerant lines need to be insu-

lated separately

NOTE: The service valves on the outdoor unit must remain closed until all 4 connections have been made.

EVACUATE TUBING AND CHARGE THE SYSTEM -- When all the fittings are connected, air must be expelled, then

refrigerant charge nmst be checked and adjusted. Follow the steps below.

1. Open the service port cap on the suction line valve (large valve of unit No. i).

2. Connect the vacuum pump to the service port of unit No.

1 via the pressure gage and evacuate to 500 microns to

eliminate contamination and moisture.

3. Disconnect the vacuum pump. Unit should maintain 500 microns for 5 minutes.

4. Remove the service port caps from the mixed-phase valve and suction line valve

5. Open the mixed-phase valve (small valve) with an Allen wrench.

6. Open the suction line valve (large valve) with an Allen wrench.

7. To evacuate and charge unit No. 2 repeat steps 1 thru 6.

8. The outdoor unit is supplied with sufficient R-22 re-

frigerant for up to 25 ft. lineset length. Add 0.9 oz. of

refrigerant for each additional 3 ft. of tubing length.

9. Make sure that the valves are properly opened. Be careful not to open them more than required as this may damage

the thread.

10. Replace the service port cap. Using refrigerant oil, lubri- cate the cap beam and hand tighten until resistance is met.

Use a suitable wrench to tighten the cap by an additional

1/2 turn.

Power Supply -- See Tables 4 and 5 for electrical data and Fig. 13-14 for system wiring diagrams.

Leak Test -- Leak test all fittings with appropriate test equipment.

Table 4_Electrical Data, Indoor Units -- 30VDC

UNIT VOLTAGE MCA* MOCP* FULL FAN MO- COM- COMPRESSOR

LOAD TOR PRESSOR LOCKED ROTOR AMPS AMPS AMPS AMPS

DFF2AH 09JIA 30VDC N/A N/A 1.8 1.1 N/A N/A DFF2HH 12JIA 30VDC N/A N/A 1.8 1.5 N/A N/A

LEGEND

MCA Minimum Circuit Amps MOCP - Maximum Overcurrent Protection

* If indoor unit is powered from outdoor terminN block, the MOCP for the

outdoor unit is for both sections

NOTE: Specifications and performance data are subject to change with-

out notice.

3095897

Table 5_Electrical Data, Outdoor Units -- 115, 1-60

UNIT VOLTAGE MCA* MOCP* FULL FAN MO- COM- COMPRESSOR

LOAD TOR PRESSOR LOCKED ROTOR AMPS AMPS AMPS AMPS

DFC2A 318J2A II5VAC 19.8 25 18 1.00 7.2 42

DFC2H 324J2A II5VAC 24.6 30 22.2 1.00 9.3 58

LEGEND

MCA Minimum Circuit Amps MOCP * Maximum Overcurrent Protection

• If indoor unit is powered from outdoor terminal block, the MOCP for the outdoor unit is for both sections.

NOTE: Specifications and performance data are subject to change with-

out notice.

3095897

INDOOR UNIT ®

THlt tTi2 TH3

J6J7 J8

J18

1._2

Jt4

PPE _

lTo_

Jll

i._2 F-1

.._j ,, K9

L-J F-I

-L,'d K7

TAC 671 Main

_J Board

TAC 670 control

5130252398i-A

FAN -, -_-_

H.LT.V - _RE_O

-12V BLK RED *_0VDC

r N MOTO

FAN1 BLUE

_IFAN2RgO J4 r_

FAN3 BLK

_ s

II OND;

I I

LI N_

115VAC

Main AC Supply

Models2 X 09/ 2 X 12 WiringDiagramHeatpump

OUTDOOR UNIT

BL. L._

i NLW

iiRv__,

COMP

DC RT_

:673

' Boarc K_

® j

GREEN

_BR

*BR

*BLUE

*G_YEL

BLK

N BLUE

DC_ LI BR

_GREEN

TH3

RVS

BLK

ILTVI

*BLUE

cc@

_--_f_ _ TB

COMP.

v *OR

GND

FAN

MOTOR

TH3

RVS

BLK _ BLK

BLK

TB 1 _ J1

TAC673

:o_1 Relay Board

GREEN GREEN

co(i)

FAN

MOTOR

-_yEt.

_w__ - FAN

/_{!_ _ H.LT.V

RED 12V

J1 BLK*12V

+30v WH

J4 J3

RED+30VDC FANI BLUE BU_OCRTN i

YEL VSP FAN2 REO

BLOC -- _,j 14_-F,J

MOTOR _ FAN3 B_K

TAC672B

INDOOR UNITQ

J8 J7 J6

JIB ___

K5rTq t

-L_

Lr_LL,,Id

J_-" ljl:

STEF

K8 !,LL_

K9 i_L_

TAO 671 Main

Board

TAC670 control

LEGEND

CC -Compressor Capacitor COMP*Compressor

FC -Fan Capacitor GND *Ground

RVS *Reversing Valve Sehoid HLTV -HeatingLow Tamp.Valve

TB -Terminal Block BLDC * brushless DC TH 1 =Return airsensor TH 2 -Indoor coil sensor TH3 -Outdoor coil sensor

(_ - Indoor unit 1 circuit

(_) = Indoor unit 2circuit

"" -16 AWG _ -14 AWG * =12 AWG

ALL OTHER WIRES 18 AWG

0 - Splice

• * Terminal(Unmarked)

-- Factory Wiring

...... Field Control Wiring

_._ Field Power Wiring

Fig, 13 -- System Wiring Schematic DFF2HHO9J1A, DFF2HH12J1A FAN COIL WITH DFC2H318J2A, DFC2H324J2A Condensing Unit

INDOORUNIT®

J6J7 J8

JiB

F-_._ FAN

_K_._--i'-_K_LLB.L._V

L- _ RVS

l._J

+30V WH

-]K8 FAN1 BLU J._J _'-_ K8 FAN 2 _

K7i'-I

TAB 671 Main

Board

TAC 670 contro{

51302523982-A

r! _ "RE_

_EN

TB®

_BLDC

_ MOTOR

GND

L1N_

115VAC

Main ACSupply

Models2X 09/ 2X 12 Wiring DiagramCoolingOnly

OUTDOOR UNIT

BL_ L_

J1 TB 1 J [

FAN

TAB 673

Relay Board

GREEN

BR _BR

BLUE

'GR/YEL

; ®

BLK

BLUE

DC_ L1 BR

_GREEN

cc(

! 'B

COMP.

_OR

GND

0 BLK

BLK _BLUE

GR_EL

-] BLK

TB1 Jl

BLK

BL KI TAC 673

GREEN

i GREEN

ccQ

COMP, Q

BOE'I:

FC@

FAN FAN

MOTOR MOTOR

INDOOR UNITQ

"RED R_I

TB_

RE_* 30VDC

y_L VSp

BLD_

MOTOR

m H,L.'KV

:L RMS

RED+12V

BLK-12V

+3OV WH

FAN1 BL_

FAN2 RED

;ifTHI

J8 J7 J6

J18 ___

K5r73 l

KL_L,,.LJ

--_,2d

K9 iLLJ

K_i,L;J

TAB 674 Main

Board

TAC678control

LEGEND

CC -Compressor Capacitor

BOMP-Compressor

FC -Fan Capacitor GRD -Ground TB -Terminal Block BLDB * brushless DB

TR t -Return airsensor TH2 -Indoor coil sensor

-Indoorunitl circuit

_) - Indoor unit 2 circuit

-16AWG rk4 AWG

-42 AWG

_L OTHER WIRES 48 AWG

0 * Splice

• * Terminal(Unmarked)

-- Factory Wiring

...... Field Control Widng

_._ Field Power Wiring

Fig. 14 -- System Wiring Schematic DFF2AHO9JIA, DFF2AH12JIA FAN COIL WITH DFC2H318J2A, DFC2A324J2A Condensing Unit

START-UP

System Checks

1. Conceal the tubing where possible.

2. Make sure that the drainage tube slopes downward along

its entire length.

3. Ensure all tubing and connections are properly insulated.

4. Fasten tubes to the outside wall.

5. Seal the hole through which the cables and tubing pass.

6. Connect the air conditioner to the power source and turn it

Oil.

7. Check all air conditioner operating modes. Refer to Own- er's Manual for operating details.

INDOOR UNIT

1. Do all the remote controller buttons function properly?

2. Do the display panel lights work properly?

3. Does the air deflection louver function properly?

4. Does the drainage work?

OUTDOOR UNIT

1. Are there unusual noises or vibrations during operation?

2. Is noise, drain water or airflow from the unit likely to dis- turb the neighbors?

3. Are there any gas leaks?

EXPLAIN THE FOLLOWING ITEMS TO THE CUSTOMER, WITH THE AID OF THE OWNER'S MANUAL:

1. How to turn the air conditioner on and off; selecting cool- ing, heating and other operating modes: setting a desired

temperature: setting the timer to automatically start and stop air conditioner operation: and the other features of the

remote controller and display panel.

2. How to remove and clean the air filter.

3. How to set the air deflection louver.

4. Explain care and maintenance.

5. Present the Owner's Manual and installation instructions to the customer.

CARE AND MAINTENANCE

The following may be performed by the equipment owner. Outdoor Units

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal injury or death.

Before performing recommended maintenance, be sure unit

main pow*erswitch is turned off.

CLEANING COILS -- Coil should be washed out with water or blown out with compressed air. Clean coil annu-

ally or as required by location and outdoor air condi- tions. Inspect coil monthly and clean as required. Fins

are not continuous through coil sections. Dirt and debris may pass through first section, become trapped between

the row of fins and restrict outdoor unit airflow. Use a flashlight to determine if dirt or debris has collected be-

tween coil sections. Clean coil as follows:

1. Turn off unit power and install lockout tag.

2. Using a garden hose or other suitable equipment, flush coil from the outside to remove dirt. Be sure to flush all

dirt and debris from drain holes in base of unit. Fan mo- tors are waterproof.

Indoor Units

ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal

injury or death. To avoid the possibility of electric shock, before performing

any cleaning and maintenance operations, always turn off power to the system by pressing the ON/OFF button on the

remote control and turn off the separate disconnect switch located near the unit.

If the indoor unit is on a separate switch, be sure to turn this disconnect off as well.

COMPONENT DAMAGE HAZARD Failure to follow this may result in unit component damage.

Do not wash filter in water over 120°F (to avoid shrinkage). Do not expose filter to fire (to avoid fire damage). Do not expose filter to direct sunlight. Clean filter more frequently when air is extremel'¢ dirty.

ELECTRICAL SHOCK, FIRE COMPONENT DAMAGE HAZARD

Failure to follow this warning could result in personal injury, death and or property damage.

Do not attempt to clean or service components in control box.

To Clean the Indoor Unit Front Panel -- if the front panel of the unit becomes dirty or smudged, wipe the out-side of the panel

with a soft dry cloth. Use a mild liquid deter-gent and wipe off carefully with a dry cloth.

To Clean Indoor Coil -- To clean the coil, remove indoor unit front panel and vacuum the coil fins, using care not to bend or

damage fins.

LUBRICATION -- The indoor-fan, automatic air sweep, and the outdoor-fan motors are factory lubricated and require no oiling.

Air Filters for Indoor Units

COMPONENT DAMAGE HAZARD Failure to follow this caution may result in unit component

damage. Operating your system with dirty air filters may damage the

indoor unit and, in addition, can cause reduced performance, intermittent system operation, frost build up

on the indoor coil, and blown fuses. Inspect and clean or replace the air filters monthly.

TO REMOVE AIR FILTERS -- Open the unit's front panel by lifting the lower part and pulling it gently outward and upward.

Pull out the filters.

TO CLEAN OR REPLACE FILTERS -- Filters can be vacuumed or washed in warm water. Shake filter to remox, e any

excess water, and replace it back. If the filter has begun to break

downoristorn,replaceit.Replacementfiltersareavailable throughalocaldealer.

SERVICE

The following should be performed by a qualified service technician.

Clean Condensate Drains -- (;lean all drains and drain pans at the start of each cooling season. Check the flow by pouring water

into the drain.

Clean or Replace Drain Pan -- The drain pan should only be cleaned or replaced by a qualified service technician.

1. Place a plastic sheet on the floor to catch any water that may spill from the drain pan.

2. Remove the intake grille and distribution assembly.

3. Remove the condensate water in the drain pan by letting water drain into a 3-gallon bucket.

TROUBLESHOOTING (Tables 6-8, and Fig. 15)

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal injury or death.

Be sure to check for broken wires or loose cable lugs before

troubleshooting system.

Table 6_Service Indicators

LAMP STATUS

1 Flash

INDICATION

Faulty TH1 Sensor

2 Flashes Faulty TH2 Sensor

3 Flashes Low Pressure

4 Flashes High Pressul_e

5 Flashes Low Voltage

6 Flashes High Voltage

CORRECTION ACTION

Check the THI thermistor for correct resistance.

Check for proper connection. Replace thermistor if necessary.

Check the TH2 thermistor for correct resistance. Check for proper connection.

Replace thermistor if necessary.

Check system pressures. Check refrigerant charges. Check thermistors (THI and TH2) for correct resistance.

Check operating voltage. Check electrical connections.

POWER LED. OFF WHEN SYSTEM IS

OPERATING AND FLASHES WHEN SYSTEM IS IN ERROR

(DOES NOT INDICATE ERROR CODE)

CLEAN FILTER INDICATOR FLASHED AFTER 250 HOURS

OF OPERATION

Fig. 15 -- Indicator Lights

OPERATION LED. INDICATES ERROR

Table 7--DFS2A/DFS2H Thermistor TH-1, TH-2, and TH-3 Temperature to Resistance Conversion

TEMPERATURE

-4.0

-2.2

-0.4

1,4

3.2

5,0 6,8

8,6

19.4

12.2

14.0

15.8 17,6

19.4

21.2

23.0

24.8 26,6

28.4

39.2

32.0

33.8

35.6

37.4 39,2

41.0

42.8

44.6

46.4

48.2

59.0

51.8

53.6

55.4

57.2

59.0

69.8

62.6

64.4 66,2

68.0

69.8

71.6

73.4

75.2

77.0

78.8

89.6

82.4

84.2

86.0

87.8 89,6

91,4

93.2

NOTE: Resistance tolerance _+ 3%.

TEMPERATURE TEMPERATURE TEMPERATURE MINIMUM MEAN MAXIMUM

(_C) TOLERANCE TOLERANCE RESISTANCE RESISTANCE RESISTANCE

-20 ±2.0 ±1.1 30.89 32.44 34.05

-19 +2.0 +1,1 29.46 30.93 32.45

-19 + 2.0 + 1.1 28.12 29.51 30.94

-17 ± 2.0 ± 1.1 26.84 28.16 29.51

-16 ± 2.0 ± 1.1 25.64 26.88 28.15

-15 +2.0 +1,1 24.49 25.66 26.87

-14 +2.0 +1,1 23.40 24.52 25.66

-13 ±2.0 ±1.1 22.38 23.43 24.50

-12 ±2.0 ±1.1 21.40 22.39 23.41

-11 +2.0 +1,1 20.47 21.41 22.38

-10 + 1.8 + 1.0 19.59 20.48 21.40

-9 ±1.8 ±1.0 18.74 19.59 20.45

-8 ±1.8 ±1.0 17.94 18.74 19.56

-7 +1.8 +1,0 17117 17193 18171

-6 +1.8 +1.0 16.44 17.16 17.90

-5 --+1.8 --+1.0 15.75 16.43 17.13

-4 ±1.8 ±1.0 15.10 15.74 16.40

-3 +1.8 +1.0 14.47 15.08 15.71

-2 + 1.8 + 1.0 13.87 14.46 15.05

-1 ±1.8 ±1.0 13.31 13.86 14.42 O --+1.8 --+1.0 12.77 13.29 13.83 1 +1.8 +1.0 12.25 12.74 13.25 2 +1.8 +1.0 11.75 12.22 12.70

3 --+1.8 --+1.0 11.28 11.73 12.18 4 ±1.8 ±1.0 10.83 11.25 11.68 5 +1.8 +1.0 10.40 10.80 11.21 6 +1,8 +1.0 9.986 10.370 10.76

7 +1.8 +1.0 9.595 9.960 10.33 8 +1.8 +1.0 9.222 9.569 9.921 9 ±1.8 ±1.0 8.866 9.196 9.530

10 ±1.8 ±1.0 8.526 8.840 9.157

11 +1.8 +1.0 8.197 8.496 8.797 12 +1.8 +1.0 7.883 8.167 8.453 13 ±1.8 ±0.6 7.583 7.853 8.125 14 --+1.8 --+0.6 7.296 7.553 7.812 15 +1.8 +0.6 7.022 7.267 7.513

16 +1.6 +0.9 6.761 6.993 7.227 17 ±1.6 --+0.9 6.510 6.731 6.954 18 ±1.6 ±0.9 6.271 6.481 6.693 19 +1.6 +0.9 6.042 6.242 6.444

20 +1.8 +o.6 5.822 6.013 6.205 21 ±1.6 ±0.9 5.611 5.793 5.975 22 ±1.6 ±0.9 5.408 5.581 5.755 23 +1.8 +0.6 5.214 5.379 5.544 24 +1.6 +0.9 5.028 5.185 5.343

25 _+1.8 ±0.9 4.850 5.000 5.150 26 ±1,6 ±0.9 4.675 4.821 4.968 27 +1.6 +o.e 4.508 4.650 4.793 28 +1.8 +0.9 4.347 4.486 4.626

29 ±1,8 ±1.0 4.193 4.329 4.466 30 ± 1.8 ± 1.0 4.046 4.179 4.312 31 +1.8 +1.0 3.904 4.033 4.163

32 +1,8 +1.0 3.767 3.894 4.020 33 ±1,8 ±1.0 3.637 3.760 3.884

34 ±1.8 ±1.o 3.511 3.631 3.752

(_P) (_C) (K_) (K_) (K_)

Table 7 --DFS2A/DFS2H Thermistor TH-1, TH-2, and TH-3 Temperature to Resistance Conversion (Cont.)

TEMPERATURE TEMPERATURE TEMPERATURE TEMPERATURE MINIMUM MEAN MAXIMUM

_F) (L_C) TOLERANCE TOLERANCE RESISTANCE RESISTANCE RESISTANCE

95.0 35 + 1.8 + 1.0 3.391 3.508 3.626 96,8 36 + 2.0 + 1.1 3.275 3.390 3.505

98.6 37 ± 2.0 ± 1.1 3.164 3.276 3.389

100.4 38 ±2.0 ±1,1 3.058 3.167 3.277

102.2 39 +2.0 +1,1 2.956 3.062 3.169

104.0 40 ±2.0 ±1.1 2.857 2.961 3.066

105.8 41 +2.6 +1.1 2.762 2.864 2.966

107.6 42 ±2.0 ±1.1 2.671 2.770 2.870

109.4 43 +2.2 +1.2 2.583 2.679 2.777

111.2 44 ±2.2 ±1,2 2.498 2.593 2.688

113.0 45 + 2.2 + 1.2 2.417 2.509 2.602

114.8 46 ±2.2 ±1.2 2.339 2.429 2.520 116,6 47 +2.2 +1.2 2.264 2.352 2.441 118,4 48 ±2.3 --+1.3 2.192 2.227 2.364

120.2 49 +2.3 +1.3 2.122 2.206 2.291

122.0 50 ±2.3 ±1.3 2.055 2.137 2.220

123.8 51 +2.3 +1.3 1.990 2.070 2.151

125.6 52 ±2.3 ±1.3 1.928 2.006 2.085

127.4 53 +2.3 +1.3 1.867 1.943 2.021

129.2 54 ±2.3 ±1.3 1.809 1.883 1.959

191.0 55 +2.5 +1.4 1.753 1.826 1.900

192.8 56 ±2.5 ±1.4 1.699 1.770 1.842

194.6 57 + 2.5 + 1.4 1.647 1.717 1.787

196.4 56 ±2.5 ±1.4 1.597 1.665 1.734

198.2 59 + 2.5 + 1.4 1.549 1.615 1.683

140.0 6O --+2.5 --+1.4 1.503 1.567 1.633

141.8 61 ±2.7 ±1.5 1.458 1.521 1.585

143.6 62 + 2.7 + 1.5 1.414 1.476 1.539

145.4 63 ± 2.7 ± 1.5 1.372 1.432 1.494

147.2 64 +2.7 +1.5 1.332 1.391 1.451

149.0 65 ±2.7 ±1.5 1.293 1.350 1.409

150.8 66 + 2.9 + 1.6 1.255 1.311 1.369

152.6 67 ± 2.9 ± 1.8 1.219 1.274 1.330

154.4 68 +2.9 +1.6 1.184 1.237 1.292

156.2 69 ±2.9 ±1.6 1.150 1.202 1.256

158.0 76 +2.9 +1.6 1.117 1.168 1.221

NOTE: Resistance tolerance _+ 3%.

_F) (_C) (K_) (K_) (K_)

Table 8---General System Troubleshooting Guide

SYMPTOM PROBABLE CAUSE CORRECTIVE ACTION

Unit Fails to Start. Power supply from outdoor unit to indoor unit is Check for proper connection of power at disconnect.

Only Indoor Fan Works The selected mode is Fan Only, or Cool when Check if the remote control is in the desired mode. If not, select

when Cooling or Heat- heating is desired, the correct mode (refer to User manual). Also note that every 15

ing is Desired. NOTE: minutes (maximum) the compressor will be switched minimally Indoor fan runs contin- on for 3 minutes.

uously in cooling mode.

Only Indoor Fan Motor Overload safety device on compressor is cut out Switch off power and try again after one hour. and Outdoor Fan Motor due to high temperature. are Working. No Cool-

ing and/or Heating Compressor run capacitor is burnt. Replace compressor run capacitor.

Takes Place. Compressor winding shorted. Replace compressor.

No Air Supply at Indoor Indoor fan motor is blocked or turns slowly. 1. Check vottage. Repair wiring if necessary. Unit (Compressor Op- 2. Check indoor fan wheel if tight on motor shaft. Tighten if nec- erates), essary.

Low Capacity. Lack of refrigerant. Ice formation on the evapora- Unit must be charged (according to the nameplate) after Iocal-

In Heat Mode, Only A/C operating in defrost cycle. Wait 10 minutes (maximum) until the unit resumes normal opera- Compressor Runs. Out- tion.

door and Indoor Fan Motors are Stopped.

Water Accumulates Drain pan pipe or hose is clogged or the spout of Disassemble plastic drain pipe from spout of evaporator drain

and Overflows from drain pan is clogged, pan. Flush with clean water. Evaporator Drain Pan.

Unit Does Not Operate The unit is in the Auto, (emergency) mode. Push button once to cancel Auto, (emergency) mode. in Desired Mode.

not connected. Power supply to unit not connected (POWER

LED Off). Fuse blown (POWER LED Off). Reset circuit breaker or replace line fuse.

ON/SEND button has not been pressed. Press ON/SEND button on remote control. Indoor unit does not receive transmitted com- Make sure that nothing is blocking the remote control transmis-

mands, sion to the unit.

Temperature is set to a value which is too high (in Observe the temperature setting on the remote control. Also note Cool mode), that each 15 minutes (maximum), the compressor will be

switched on minimally for 3 minutes.

Indoor fan motor capacitor is burnt. Replace indoor fan motor capacitor. Indoor fan motor winding is burnt. Replace indoor fan motor.

In Heat mode: Delayed start for indoor fan motor. Normal software delay (maximum of 20 sec). Clogged air filters. Clean filters.

tor coil. izing the gas leak. Clogged air filters. Clean filters.

Faulty remote control settings. 1. If remote control symbols respond to the commands correctly,

check the unit ID Code (Standard or Alternative). Refer to "Changing Unit ID Code" in the Owner's Manual.

Remote control low battery. Replace remote control batteries.

The Unit Receives Inter- Common Infrared Code. Modify the Remote Control IR transmission code. ference from Other Re- Refer to "Changing Unit ID Code" inthe Owner's Manual.

mote Control or the Re- mote Control Interferes

with Other Instruments.

IMPORTANT:

The units are designed to work in heat mode only down to -10°C (14 ° F) outdoor ambient temperature. If at starting time outdoor temperature is equal or lower than -10°C (!4°F) the unit wil! not start and the filter led will flash five

(5) times to indicate that low temperature protection is activated.

Manutacturer reserves the right to discontinue, or change at any t_me, speolhCatlOnS or designs without notice and without incurring ObllgBtlons,

2. If Oool commands are OK, but Heat symbol is skipped on LCD, refer to setting the remote to cooling or heat pump on the

Owner's Manual.

3. Replace remote control.

International Comfort Products, LLC

Lewisbur_, Tennessee 37091

International comfort products DFS2A318J2A, DFS2A324J2A, DFS2H318J2A, DFS2H324J2A Installation, Start-up And Service Instructions Manual

Specifications and Main Features

Frequently Asked Questions

User Manual