Specifications

ManualsBrandsCarrier ManualsAir Conditioner38BK-018

619E018,024,

40QNB,QNH018,024

High Wall Fan Coil Units

Cancels: II 619E-18-2

Installation, Start-Up

and Service Instructions

II 619E-18-3

9/1/02

CONTENTS

Page

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

GENERAL ....................................... 1,2

INSTALLATION ................................ 2-13

Step 1 -- Complete Pre-lnstallation

Checks ......................................... 2

• UNPACK UNIT

• INSPECT SHIPMENT

Step 2 -- Select Location ......................... 2

Step 3 -- Attach Mounting Bracket to Wall ....... 5

Step 4 -- Connect Refrigerant Piping ............ 5

Step 5 -- Connect Condensate Drain Line ....... 11

Step 6 -- Make Electrical Connections .......... 11

Step 7 -- Make Connections to

Outdoor Unit .................................. 13

• COOLING-ONLY SYSTEMS

• HEAT PUMP SYSTEMS

Step 8 -- Install Fan Coil Unit Onto Mounting

Bracket ....................................... 13

START-UP .................................... 13-16

Control System ................................. 14

After Extended Shutdowns ...................... 14

Seasonal Changeovers .......................... 14

To Turn The Unit On and Off ..................... 14

Adjusting Airflow ................................ 14

Operating Mode Memory ........................ 15

Automatic Operation (Auto) Mode ............... 15

Operating Fault Diagnosis ....................... 15

Microprocessor Control Operation .............. 15

CLEANING AND MAINTENANCE .............. 17,18

Lubrication ...................................... 17

To Install or Replace Remote Controller

Batteries ...................................... 17

To Set the Current Time ......................... 17

To Remove and Clean or Replace Air Filters ..... 17

• TO REMOVE AIR FILTERS

• TO CLEAN OR REPLACE FILTERS

To Clean Indoor Unit Front Panel ................ 18

To Clean Indoor Coil ............................ 18

To Clean Outdoor Coil (Outdoor Unit) ........... 18

Cleaning Condensate Drains .................... 18

SERVICE ........................................ 19

Diagnostic Codes ............................... 19

System Tests .................................... 19

• THERMISTOR TESTS

• THERMISTORS

• COMPRESSOR FAILURE

• REVERSING VALVE FAILURE (Heat Pump Only)

Page

System Safeties and Interlock ................... 19

• INDOOR FAN FAILURE

• COMPRESSOR SHORT-CYCLING PROTECTION

• INDOOR COIL FREEZE PROTECTION

(Cooling or Dehumidification Mode Only)

• INDOOR COIL HIGH-TEMPERATURE

PROTECTION (Heat Pump Systems Only)

TROUBLESHOOTING ......................... 19-25

STA RT-UP CHECKLIST ................... CL- 1,CL-2

SAFETY CONSIDERATIONS

Installing and servicing air-conditioning equipment can be

hazardous due to system pressure and electrical components.

Only trained and qualified service personnel should install or

service air-conditioning equipment.

Untrained personnel can perform basic maintenance, such

as clemling and replacing tilters. All other operations should be

performed by trained selwice personnel. When working on air-

conditioning equipment, observe precautions in literature and

on tags and labels attached to unit.

Follow all safety codes. Wear safety glasses mid work

gloves. Use quenching cloth for brazing operations. Have fire

extin_isher available. Read these instructions thoroz(,_hl3<

Consult local building codes and National Electrical Code

(NEC) for special installation requirements.

Before installing or servicing system, always turn offmain

power to system. There may be more than one disconnect

switch. Turn offindoor tan coil power if applicable. Electri-

cal shock can cause personal injury.

GENERAL

The heat pump hi_l walt tan coil units (Fig. 1) come with

supplemental electric heat. If your application requires heating,

heat pump units must be used, both outdoors and indoors. See

Table 1 for recommended system combinations.

)

Fig. 1 -- Typical High Wall Fan Coil Unit

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

PC 111 Catalog No. 534-043 Printed in U.S.A. Form 40QN-6SI Pg 1 9-02 Replaces: 40QN-4SI

Summary of content (26 pages)

PAGE 1
619E018,024, 40QNB,QNH018,024 High Wall Fan Coil Units Cancels: II 619E-18-2 II 619E-18-3 9/1/02 Installation, Start-Up and Service Instructions CONTENTS Page SAFETY CONSIDERATIONS ...................... 1 GENERAL ....................................... 1,2 INSTALLATION ................................ 2-13 Step 1 -- Complete Pre-lnstallation Checks ......................................... 2 • UNPACK UNIT • INSPECT SHIPMENT Step 2 -- Select Location .........................
PAGE 2
Table 1 -- System Combinations for Indoor and Outdoor Units SYSTEM Cooling Only Systems Heat Pump Systems INDOOR UNIT OUTDOOR 40QNB018 38HDC, HDL018 40QNB024 38HDL018, 40QNB018 (2) 619ENX0180E0 38HDS024* 538ANX, JNX018 619ENX0240E0 538JNX018, (2) 619ENX0180E0 40QNH018 538SNX024 38BK018 40QNH024 619ENX0180H0 38BK024 538DNX018 619ENX0240H0 538DNX024 *Multi-split systems can accommodate fan coil with one condensing unit.
PAGE 3
4. Place the top of the fan coil unit up to 10 ft above floor level, making sure the unit is at least 10 in. down from the ceiling to permit proper air intake. Also, make sure that the unit is not placed directly over anything to prevent filter removal or block airflow. Once the piping is through the wall, it can run inside walls, in ceilings, between floors, or straight to the outside. NOTE: Run refrigerant piping as directly as possible, and avoid any unnecessary turns or bends. 7.
PAGE 4
Table4 -- High Wall Unit Package Contents ITEM QUANTITY Unit Mounting Template 1 Unit Mounting Bracket 1 1-in. Lag Screws For Unit Mounting 8 Hollow Wall Anchor Bolts For Unit Mounting 5 Wall Sleeve With Wall Cap 1 Infrared Wireless Remote Control Assembly 1 AAA Batteries (For Remote Control) 2 Remote Control Mounting Bracket 1 3/8-in.
PAGE 5
POSSIBLE 4. Temporarily hang the unit on the bracket to check location and level. PIPING DIRECTIONS SIDE KNOCKOUT RIGHT __ _"__ A .............. BOttOM KNOCKOUT LEFT SiDE _ II It _ KNOCKOUT U PREPUNCHED HOLES \ FOR LEFT SIDE PIPING FOR RIGHT SIDE PiPiNG FOR BOTTOM/REAR PIPING Fig. 4- Refrigerant Piping Step 3 -- Attach Mounting Bracket to Wall 1. Decide how the refrigerant wilt be piped. It'necessary, knock out the appropriate pre-punched holes (Fig.
PAGE 6
Use the following instructions to connect piping. 1. Install insulation. Insulate all refrigerant lines on heat pumps and multi-split systems to prevent condensation. It is extremely important that all refrigerant lines and the AccuRater,¢<)metering device be insulated on heat pumps. On cooling only units, the liquid line may be left uninsulated. Use any acceptable heat resistant, closed-celt foam insulation (minimum 3/s-in. wall thickaless).
PAGE 7
Table 5A -- Physical Data -- 38HDC, 538A Condensing Units UNIT SIZE NOMINAL OPERATING CAPACITY 11/2 018 150 (Tons) WEIGHT (Ib) REFRIGERANT TYPE Control (Cooling) Charge (Ib) OUTDOOR FAN Rpm Diameter (in,),,.No. of Blades Pitch (Degrees) Motor Hp Nominal Air Cfm OUTDOOR COIL Face Area (sq ft).,.No, Finstin. AccuRater_ 18_.3 25 1/8 850 1720 of 40 va is provided Direct Drive 18...
PAGE 8
Table 5C -- Physical Data -- Multi-Split Condensing Units UNIT SIZE NOMINAL O24 CAPACITY OPERATING 2 (Tons) WEIGHT 159 (Ib) REFRIGERANT TYPE Control (Cooling) Charge (Ib)* Circuit A Circuit B OUTDOOR FAN Rpm Diameter (in,),..No. Pitch (Degrees) Motor Hp Nominal Air Cfm R-22 TXV in Condensing See Table 6 Propeller, of Blades Direct 850 18...3 27 Drive l& 1720 OUTDOOR COIL Face Area (sq ft),..No, Fins/in.
PAGE 9
Table 5E -- Physical Data -- Outdoor Heat Pump Units UNIT SIZE NOMINAL 018 CAPACITY OPERATING WEIGHT REFRIGERANT TYPE Control (Cooling) Control (Heating) Charge (Ib)* (Tons) (Ib) 024 11/2 2 154 167 R-22 Piston at Fan Coil Unit Piston at Outdoor Unit See Table 6 AccuRater® AccuRater CRANKCASE HEATER (Watts) OUTDOOR FAN Rpm Diameter (in,),..No. of Blades Pitch (Degrees) Motor Hp Nominal Air Cfm OUTDOOR COIL Face Area (sq ft),..No, Fins/in. 19 I Direct Propeller, 19 Drive 850 18_.
PAGE 10
Table 6 -- Refrigerant Charge SYSTEM HIGH WALL (Btuh) I INDOOR UNIT OUTDOOR UNIT ADDED CHARGE* FACTORY CHARGE Coolin_ 18,000 (over 50 ft tubing) 3.6 Operating 38HDL018 538JNX 40QNB024 619ENX024 (Ib)* I Only 38HDC018 538ANX 40QNB018 619ENX018 Charge 3.8 38HDLO18 538JNX 24,000 (25-50 ftCHARGE tubing) I OPERATING Operating 38HDC024 538ANX 5.3 38HDLO24 538JNX Operating .58 Oz. For each foot over 50' 3.8 Charge 6.014.4 Charge Heat Pumps 18,000 40QNH018 619ENX018 38BK018-3 538DNX 2.
PAGE 11
Step 5 -- Connect Condensate Drain Line -- Observe all local sanitary codes when installing condensate drains. Step 6 -- Make Electrical Connections -- Be sure field wiring complies with local building codes and NEC, and unit voltage is within limits shown in Table 8. Refer to Table 9 for units with electric heat. 1. Connect the drain line by inserting a 5/8-in. (inside diameter) rigid PVC pipe over the drain connection. Refer to Fig. 10. Contact local power company to correct hnproper line vohage.
PAGE 12
Do not short circuit the indoor unit's transformer it is l'used. The transformer can be short circuited by connecting the wrong wires or by touching a live wire to the side of a grounded control box. TBI - SCREW 208/230 VOLT FSINGLE-PHASE CONN.J INDOOR oTOooNNECT L RELIEF SFRAIN CLAMP _ LABEL CAUTION t NOTE: This shows item locations only. Front cover of fan coil unit must be removed to access terminal boards. Fig. 12 -- Fan Coil Unit Wiring Preparation EQUIP FAN COIL GND UNITS LEGEND 4.
PAGE 13
START-UP Step 7 i Make Connections to the Outdoor Unit COOLING ONLY SYSTEMS To connect the outdoor unit to the tan coil unit so the system will operate correctly: Route 2 field-supplied wires of 18-gage AWG (American Wire Gage) therlnostat cable between the low voltage terlninal block of the tan coil TB-2 and the outdoor unit's low voltage terlninat block. Connect the wires between terlninals C and xA Complete the following checks and the Start-Up Checklist on page CL-1 before system start-up.
PAGE 14
ControlSystem --The indoor unit is equipped with a microprocessor control which operates the system. This control is located in the control box of the fan coil unit, with thermistors located in the thn coil inlet and on the indoor coil. The heat pump fan coil units also have thermistors on the outdoor coil and in the outdoor air inlet. These thermistors monitor system operation and control the operating mode.
PAGE 15
The swing range shown in Fig. 18 is the range that provides maxilnum occupant comfort in each mode. It is recolmnended that the louvers be positioned within this range (using the relnote controller). NOTE: The full swing range for the mode selected will automatically be used if auto. tan mode is selected.
PAGE 16
TheindoortZan speed will beatthehighsetting, andthe swinglouvers will beon(moving upanddo,am). NOTE:Theunitcmmot becontrolled bytheremote controller untiltheslideswitch isreturned totheREMOTE position. or Heating mode according to room telnperature. Emergency operation settings are as follows: 1. Operation mode: AUTO. 2. Fan Speed: AUTO. 3. Cooling set point: 77 F 4.
PAGE 17
CLEANING AND MAINTENANCE Replace the remote controller batteries when the remote controller function becomes irregular, or the system no longer responds to commmlds given close to the unit. When shutting down the system for an extended period of time, it is advisable to remove the batteries from the remote controller.
PAGE 18
TO CLEAN OR REPLACE FILTERS Filters should be vacuumed and ,a_ashedwith warm water (see Fig. 23). Shake the tilter to remove any excess ,a_atei; dry it thoroughly, and replace it by sliding the tilter behind fiont gille until the tilter snaps in place. If the filter has bemm to break down or is tom, it needs to be replaced. Replacement tilters are available through your distributor. To Clean Indoor Coil -- To clean the coil, remove the indoor unit front panel, and vacuum the coil fins.
PAGE 19
SERVICE System TestsThe system tests listed below are performed continuously by the microprocessor. If a fault is indicated, then the system allows only lhnited operation until the probleln is resolved. If the problem resolves itsel£ then the code is cleared and operation resumes. When servicing unit, turn off all electric power to unit to avoid shock hazard or injury tiom rotating parts.
PAGE 20
Table 12 -- Thermistor Properties* TEMP (F) MINIMUM OHMS NOMINAL OHMS MAXIMUM OHMS MINIMUM THERMISTOR VOLTS -- DC NOMINAL THERMISTOR VOLTS -- DC MAXIMUM THERMISTOR VOLTS -- DC -40 303.300 342,700 386,200 4.80 4.82 4.84 -30 211,500 237,276 265,444 4.72 4.75 4.77 -20 149.721 166,689 185,146 4.61 4.65 4.68 -10 107.379 118,776 130,973 4.48 4.52 4.55 0 77,281 85,677 93,867 4.30 4.35 4.40 f0 56,567 62,617 68,205 4.09 4.16 4.21 20 42,661 46,302 50,129 3.86 3.
PAGE 21
_ EATHERPROOF FUSED DISCONNECTt PERNEC _ ii _ "_- 2 WIRES _ AIRFLOW (+) GROUND _ATER HEAT PUMP ONLY) DEV_I_ECE*-"-__ (BIFLOW)t ":' ' OUTDOOR UNIT '; ;' " .: INDICATOR SIGHT GLASSt _ .., THERMISTOR CABLE* (COOLING ONL_ 5 WIRES (HEAT PUMP)t ACCURATER_ METERING DEVICE (INSTALLED AT UNIT) 2 WIRES (4 AIRFLOW CONTROL POWER PROVIDED INSIDE UNIT ,I-- FUSED DISCONNECTf S*GNT j/ - TOOPEN _ LEGEND NEC -"---------.m....._ -- WIRELESS CONTROLLER* // .........
PAGE 22
LEGEND AGING AS, ASS'Y C CAP CH CLO CN COMP CT EMI FL FMC GND HA HPS HS HTR IDC Th IFM JEM-A K LLPS LPS LS ODA Th ODC Th OFM --- -- --- --- AND NOTES FOR FIG.
PAGE 23
018, 024 FANCOIL CN9 I_ Th_ RA Th CN7 CNl3 RELAY Ix3 %0 CHART COMPRESSOR REV. VALVE OUTDOOR FAN THERMISTOR TEMPERATURE STEP MOTOR eL) K13 Kll K12 EQUIVALENCE RESISTANCE °F °C o 95 35 5,500 72 22 11,400 32 0 32,500 STEP MOTOR (R) ALL THERMISTORS ARE IDENTICAL Fig.
PAGE 24
_R_F_ DISPLAY CNll PCB AS CNlO 018 024 FANCOIL HA JEM A F_ AGING SHORT rTT_l r77_ BRN IDC CN9 P1 P2 CNll CN12 CNIO 3N13 CNI8 Th RA Th .o#o'#% _ BLK 3N14 CONTROL PCB ASS'Y YEL c .
PAGE 25
DISPLAY ON11 GRN/YEL_ 018.024FAN COIL POD AS ON10 HA JEM A FT_ AGING SHORT FY3] []q3] CNE IOC Th Pl P2 CNll CNlO ON12 CN13 ON18 BRN RA Th CN14 ON7 PCB ASS" Y CN1 BLK 034 BARE RED OOPPER ® EMI FILTER GRN/YEL ON3 1 2 3 4 CUSE CABLEDISCONNECT PROVIDED) TO UNIT L f ® GRN/YEL • CND[ ORD TB2 COMNON(24VAC) CN31 TIME GUARO TIMING SEQUENCE 3 SEC_ T] T2[__ RUN TIME _ BLACK DENOTES CLOSED _5 M[N.
PAGE 26
Copyright 2002 Carrier Corporation Manufacturer reserves the right to discontinue, or change at any time, specifications PC 111 Catalog No. 534-043 Printed in U.