Carrier 38AN User Manual

Installation, Start-Up an

Service Instructions

(For Use in High Wall Applications)

CONTENTS

Page

SAFETY CONSIDERATIONS....

GENERAL INSTALLATION

......................................

.............................................

Step 1 - Complete Pre-Installation Checks ...

• UNPACK UNIT

• INSPECT SHIPMENT

Step 2 - Select Location

.......................................

Step 3 - Mount Mounting Bracket on Wall ... Step 4 - Mount Outdoor Section Step 5 - Connect Refrigerant Piping

• RIGHT REAR AND BOTTOM PIPING

CONNECTIONS

• RIGHT SIDE PIPING CONNECTIONS

• LEFT SIDE PIPING CONNECTIONS

• ALL TYPES PIPING CONNECTIONS

Step 6 - Make Piping Connections

..........................

..................

......................

Step 7 - Connect Condensate Drain Line Step 8 - Make Electrical Connections

• INDOOR SECTION WIRING

• OUTDOOR SECTION WIRING

................

Step 9 - Install Fan Coil Unit Onto

Mounting Bracket

..............................................

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

40QN Control System Wireless Remote Controllers After Extended Shutdowns Seasonal Changeovers To Turn the Unit On and Off

...............................

...................

......................

.............................

.....................

Adjusting Airflow .......................................

Operating Mode Memory Automatic Operation (Auto) Mode Operating Fault Diagnosis

Microprocessor Control Operation

..........................

...........

........................

..........

CLEANING AND MAINTENANCE......................18-19

Lubrication

............................................................

To install or Replace Remote Controller

Batteries .............................................................18

To Set the Current Time

.......................................

To Remove and Clean or Replace Air Filters .. 18

• TO REMOVE AIR FILTERS

• TO CLEAN OR REPLACE FILTERS

To Clean Indoor Unit Front Panel

.......................

To Clean Indoor Coil .............................................19

To Clean Outdoor Coil (Outdoor Unit) ................19

To Clean Condensate Drains

SERVICE Diagnostic Codes

........................................................

..........................................

...............................

System Tests..................................................

• THERMISTOR TESTS

• COMPRESSOR FAILURE

• REVERSING VALVE FAILURE (38BK Only)

.. I

. 1,2

.2-13

_____

14-17 .. 14 .. 14 .. 14 .. 14 .. 14 .. 14 .. 14 ,. 14 .. 15 .. 15

.20 .20 .20

.3 .9

11 11

38AN,BK

with 40QN009,012

Cooling Only/Heat Pump Systems

Page

System Safeties and Interlocks ..........................

• INDOOR FAN FAILURE

• COMPRESSOR SHORT-CYCLING PROTECTION

• INDOOR COIL FREEZE PROTECTION

• INDOOR COIL HIGH-TEMPERATURE PROTECTION

TROUBLESHOOTING .. START-UP CHECKLIST

..........

.CL-1, CL-2

SAFETY CONSIDERATIONS

Installing and servicing air-conditioning equipment ean be hazardous due to system pressure and electrical compo nents. Only trained and qualified service personnel should install or service air-conditioning equipment.

Untrained personnel can perform basic maintenance func tions such as cleaning coils and filters and replacing filters. All other operations should be performed by trained service personnel.

When working on air conditioning equipment, observe pre

cautions in the literature and on tags and labels attached to unit. Follow all safety codes. Wear safety glasses and work gloves. Use quenching cloth for brazing operations. Have fire extinguisher available. Before installation, read these in structions thoroughly. Consult local building codes and Na tional Electrical Code (NEC) for special installation requirements.

A WARNING

Electrical shock can cause personal injuiy or death. Be

fore installing or servicing system, be sure to turn off

main power to system. There may be more than one dis connect switch. Turn olf indoor fan coil power as applicable.

GENERAL

The Carrier 40QNH012 heat pump high wall fan coil unit

(Fig, 1) comes with supplemental electric heat (40QNE009 heat pmnp fan coil unit does not have electric heat). If your application requires heating, heat pump units must be used both outdoors and indoors. See Table 1 for recommended

system combinations.

The matched cooling and heat pump systems consist of an outdoor section (condensing unit or heat pump) and an in door section (fan coil). The outdoor section (38AN or 38BK) is installed alongside the building structure. It can also be installed on a flat roof, deck, or on an apartment building balcony. The indoor section (40QNB009,012 or 40QNE009,

40QNH012) is mounted high on an interior wall that is con

venient for piping connection to the outdoor section. Two sizes are available: 9,000 and 12,000 Btuh cooling capaci ties. See Fig. 1 for system components. Table 1 for system

.20

20-27

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

Book|1 |4 PC 111 Catalog No. 533-848 Printed In U.S.A. Form 38A.B/40Q-1SI Pg 1 5-99 Replaces; 53AN,BK-1 SI Tab 3e 2f

combinations, and Table 2 for application range. Refer to this manual for proper installation of the complete system. Refer to Table 1 to make sure the correct indoor unit is in stalled with the correct outdoor unit. Be sure the unit will be operated within the application guidelines shown in Table 2. When installing the 38AN or 38BK unit, it is important to note that for cooling operation when the outdoor air tem perature is below 55 F, it is necessary to equip the outdoor unit with the low-ambient accessory.

To install this unit you will need:

1 — 40QNB or 40QNE/H Fan Coil unit with standard wire

less remote controller and indoor unit wire

1 — 38AN or 38BK. Outdoor Unit 1 — Low-Ambient Kit (if required for your application)

NOTE: Field-supplied wire, drain pipe, refrigerant tubing, etc., are also required to install unit.

The installation materials provided are for use on instal lations where the indoor section is mounted to gypsum wall board with wall studs. Other types of applications require field-supplied mounting hardware. Be sure to follow all in stallation instructions in this manual carefully in order to achieve proper unit operation, and be sure that you have all of the required parts before beginning installation.

Note that the cooling only and heat pump systems utilize

a microprocessor control system to deliver optimum levels of comfort and efficiency. Refer to Microprocessor Control Operation section on page 15 for details.

Table 1 — System Combinations for Indoor

and Outdoor Units

SYSTEM

High Wall Cooling Only

High Wall Heat Pump

NOTE: A cooling only outdoor unit may not be matched with a heat pump indoor unit, a heat pump outdoor unit may not be matched with a cooiing only indoor unit. Do not mismatch systems.

INDOOR

UNIT

40QNB009 40QNB012

40QNE009

40QNH012

OUTDOOR

UNIT

38AN009 38AN012

38BK009 38BK012

INSTALLATION

Step 1 — Complete Pre-Installation Checks

UNPACK UNIT(S) — Store unit{s) in original packaging until moved to the final site for installation. When removing unit from carton, lift by its 4 comers. Note that there is a plastic bag containing mounting screws taped to the mount ing bracket.

INSPECT SHIPMENT — Upon receipt of shipment, in spect unit (Fig. 1) for damage. Forward claim papers di rectly to the transportation company. Manufacturer is not re sponsible for damage incurred in transit.

Check all items (see Table 3), and if any item is missing, notify your Carrier distributor. To prevent loss or damage, leave all parts in the original packages until installation.

NOTE: The expansion device is located in outdoor unit.

Step 2 — Select Location — Consult local building

codes and NEC for special installation requirements.

NOTE: There are several ways the unit may be installed in

different types of wall construction. These instructions do not cover all installation methods. As a typical installation, these instructions focus primarily on mounting the unit to

wall studs in new construction.

Plan your installation carefully before you begin. Listed

below are some guidelines to follow when determining a lo

cation for the unit;

1. Center unit (horizontally) on the wall selected.

2. Allow sufficient space for airflow clearance, wiring, re frigerant piping, and servicing the unit. See Fig. 2-4.

3. Place the unit so it faces normal location of room occupants.

Table 2 — Application Range

COOLING

Maximum Minimum

Indoor Outdoor Indoor Outdoor

95 F DB

71 F WB

Indoor Outdoor Indoor

80 F DB

71 F WB

LEGEND

DB — Dry Bulb WB — Wet Bulb

'Unit may be equipped with a low-ambient control that will allow op eration down to —20 F.

115 F DB 67 F DB

Maximum Minimum

75 F DB

65 F WB

57 F WB

HEATING

55FDB 0° F DB

55 F DB*

Outdoor

TYPICAL FAN COL UNIT

TYPICAL OUTDOOR UNIT

Fig. 1 — Typical Cooling Only/

Heat Pump System

*A clearance of 31^" is the absolute minimum, A clearance of 10” is

recommended.

NOTE: Remove unit front cover for controi box access.

Fig. 2 — Minimum Required Fan Coil Unit

Clearances

4, Select walls that are;

a. Strong enough to support the weight of the unit (see

Tables 4A-4D for unit operating weight). b. Accessible to convenient condensate drainage. c. Free of obstacles that may block air circulation to the

fan coil. d. Outside walls (if possible) to make piping easier,

5. Place top of fan coil unit as high on wall as possible, mak ing sure that unit is at least 3 ’/i in. down from ceiling to permit proper airflow (the recommended clearance is

10 inches). Also, make sure that the unit is not placed directly over anything that would prevent filter removal or block airflow.

6, Make sure units are easily accessible to electric power.

7. Reirigerant piping can enter the unit through the prepunched holes. Refrigerant piping can run down along the wall, to the right or left along the wall, straight through the wall,

or into the wall (recommended location: right rear).

See Fig, 5, Once the piping is through the wall, it can run inside walls, in ceilings, between floors, or straight to the outside. See Fig. 6 for maximum line lengths. See

Table 5 for System Piston Guide and Refrigerant

Charging. NOTE: Run refrigerant piping as directly as possible, and

avoid any unnecessary turns or bends.

8. Condensate piping can be directed through the inside wall to an approved drain or directed straight outside,

NOTE: The piping hole for condensate line must be made at a downward slope to ensure proper drainage. See Mount Mounting Bracket on Wall section below for details.

Step 3 — Mount Mounting Bracket on Wall

1. Decide how refrigerant will be piped. If necessary, knock out the appropriate pre-punched holes (Fig. 5) on unit for piping and electrical connections.

2. Remove bracket from fan coil unit by pulling it down from fan coil unit bottom as shown in Fig, 7.

3. Using a carpenter’s level, fasten mounting brackets into

the studs in the wall at least 10 in. away from the ceiling

with all the screws provided. Always be sure to insert screws into the top 2 holes indicated in Fig, 7. Make sure the

attached bracket will support a 200 Tb vertical load. For a masonry wall, anchor shields can be used to attach bracket

to the wall.

4. Temporarily hang unit on bracket to check location and

level.

A CAUTION

If mounting bracket is not mounted level, the indoor sec tion will be mounted unevenly, and condensate drain age water may drip onto the floor. Also, a gap between the bracket and the wall may result in vibration and noise

from the indoor section.

5. Mark and cut condensate and piping holes. a. For piping through the wall, mark the wall below the

condensate connection and cut a 2'/i-in. hole into the wall at either point “A” or point “B” in Fig. 8.

NOTE: The 2’/2-in hole must be made at a downward

slope to ensure proper condensate drainage. See

Fig. 9. Slope condensate line at a minimum pitch of

'A in, per foot of line. The condensate line cannot be

run up for upper piping connections — only refriger

ant lines may be run up.

b. Push the wall sleeve (factory supplied with the xmit)

through the 2‘/2-in. wall opening.

Table 3 — High Wall Unit Package Contents

ITEM QUANTITY Unit Mounting Template Unit Mounting Bracket 1 1-in. Lag Screws for Unit Mounting Hollow Wall Anchor Bolts for Unit Mounting 5

Wall Sleeve with Wall Cap

Infrared Wireless Remote Control 1

AAA Batteries (for Remote Control)

Remote Control Mounting Bracket 1

ya-in. Lag Screws for Remote Mounting Bracket 2

35 ft High Voltage Power Wiring

40QNB009 (3-Wire with Ground) 40QNEQ09 (2-Wire with Ground) 1 40QNB012 (2-Wire with Ground) 1

40QNH012 (2-Wire with Ground) 35 ft High Voltage Control Power Wiring (3-Wire) 1 35 ft Low Voltage Thermistor Wiring 1 Owner’s Manual 1 Installation Instructions Warranty Registration Card

1 1

Table 4A — Physical Data, 38AN Cooling Only Condensing Units*

UNIT 3SAN 009 012 NOMINAL CAPACITY (Tons) % OPERATING WEIGHT (lb) 55 REFRIGERANT TYPE R-22

Control (Cooling) Factory Charge (lb) 1.5 1.8

COMPRESSOR TYPE

Model Oil (Recharge) (oz) 10.1 10.1 Crankcase Heater Accumulator Yes

OUTDOOR FAN Propeller, Direct Drive

Rpm 850 850 Diameter (in.)...No. of Blades 12y4...4 12У4...4 Motor Watts 87 87 Nominal Air Cfm

OUTDOOR COIL

Face Area (sq ft)...No. of Rows 3.5...1 3.5...2 FIns/in. 18 17

CONTROLS

Fusible Plug (F) 210 210 Control Voltage 115 230

REFRIGERANT LINES

Connection Type Male Flare Liquid Line OD (in.) У4 '/4 Vapor Line OD (in.t Maximum Length (ft) Maximum Lift Fan Coil (Above Outdoor) (ft) Maximum Lift Fan Coil (Below Outdoor) (ft) 30 30

‘These units may only be used with 40QNB009,012 fan coil units.

Table 4B — Physical Data, 40QNB Cooling Only High Wall Units

UNIT 40QNB NOMINAL CAPACITY (Tons) n 1 NOMINAL SIZE (Btuh) OPERATING WEIGHT (lb) 18.7 24.2 MOISTURE REMOVAL RATE (Pints/Hr) FINISH REFRIGERANT R-22

Control (Cooling) Factory or System Charge (ib)t 1.5 1.8

INDOOR FAN

Rpm...Cfm High Rpm...Cfm Medium Rpm...Cfm Low Motor Watts 34

Biowers — No. ...Size (in.) 1...3.54 X 27.75 1...3.94X 27.75

INDOOR COIL

Face Area (sq ft) No. of Rows Finsfin.

Circuits 2

FILTERS

(Quantity) Size (in.) (2) 9x 12

AIRSWEEP

Horizontai Manual

Vertical Automatic

CONTROLS

Remote Controller Freeze Protection

Auto. Restart

Diagnostics

Timer Mode 24-Hour Startup/Shutdown Type Test Mode

Dehumidification Mode Yes Fan Mode Hig h/Medium/Low/Auto. Control Voltage 115 V 230 V

REFRIGERANT LINES

Connection Type Liquid Line OD (in.) W

Vapor Line OD (In.) 14

Maximum Len^h (ft) Maximum Lift Fan Coil (Above Outdoorl (ft) Maximum Lift Fan Coll (Below Outdoor) (ft)

CONDENSATE DRAIN CONNECTION (in.) OD, Vie ID

•Units may only be matched with 38AN outdoor units.

tFull factory charge shipped in outdoor unit. Charge is determined based on 25 ft of line.

Capillary Tube

EAA090111A

750 750

009* 012*

9000 12,000

2.4 3.4

1200...240 1040...260

1100...210 940...240

1000...180 850...210

1.45 1.6 2 2

18 17

35 35 16 16 30 30

Carrier Hernietic Rotary

None

Copper Tube, Aluminum Fin

35 35 16 16

White

Capillary Tube in Outdoor Unit

Direct Drive Centrifugal

Copper Tube, Aluminum Fin

Cieanable

integrated Microprocessor

Wireless

Yes Yes Yes

Yes

Male Flare

E8B120111A

(2) 914 X 13W

Table 4C — Physical Data, 38BK009.012 Outdoor Heat Pump Units*

UNIT 38BK NOMINAL CAPACITY (Tons) OPERATING WEIGHT (lb)

REFRIGERANT TYPE R-22

Control (Cootingt Control (Heating)

Factory Charge (lb) 1.5 2.0

COMPRESSOR TYPE Carrier Hermetic Rotary

Model

Oil (Recharge) (oz) 10.1 10.1 CRANKCASE HEATER (Watts) 40 OUTDOOR FAN Propeller, Direct Drive

Rpm Diameter (in.)...No. of Blades 12'^...4 12'/4...4 Motor Watts Nominal Air Cfm 756 756

OUTDOOR COIL

Face Area (sq ft)...No. of Rows 3.5...1 3.5...2 Fins/ln. 18 17

CONTROLS

Fusible Plug 210 F 210 F Accumulator Yes Defrost Method Demand Demand Control Voltage 115 V 230 V

REFRIGERANT LINES

Connection TVpe Male Flare Liquid Line OD (in.) V4 V4

Vapor Line OD (in.) W

Maximum Length (ft) Maximum Lift (Fan Coll Above) (ft) Maximum Lift (Fan Coll Below) (ft) 30

•These units may only be used with 40QNE/H fan coil units.

009 012

V* 1

60.7

AccuRater® Piston at Outdoor Unit

AccuRater Piston at Outdoor Unit

EBA095111H EBC130111H

850 850

87 87

Copper Tube, Aluminum Fin

35 35 16 16

66.5

Yes

Table 4D — Physical Data, 40QNE/H Heat Pump High Wall Units

UNIT NOMINAL CAPACITY (Tons) % 1 NOMINAL SIZE (Btuh) OPERATING WEIGHT (lb) 18.7 24,2 MOISTURE REMOVAL RATE (PInts/hr) REFRIGERANT

Control (Cooling) Control Seating)

Factory Charge (lb)t

INDOOR FAN Direct Drive Centrifugal

RpmyCfm High 1200/240 1040/260 RpnrVCfm Medium 1100/210 940/240 Rpm/Cfm Low 1000/180 850/210 Motor Watts Blowers Quantity...Size (in.)

INDOOR COIL

Face Area 1.45 1.6 No. of Rows Fins/in. 18 17 Circuits 2 3

FILTERS Cieanabie

Quantity...Size (in.) 2...9X 12 2...91/4X 13V4

AIRSWEEP

Horizontal Manual Vertical Automatic

CONTROLS

Remote Controller Options Diagnostics Yes Defrost Method Demand Defrost Timer Mode Yes Warm Start Feature Yes Test Mode

Freeze Protection Dehumidification Mode Yes Fan Mode High/Medium/Low/Auto

Auto Changeover Yes Auto Restart

Control Voltage

REFRIGERANT LINES

Connection Type Male Flare Liquid Line OD (in.) W

Vapor Line OD (in.) Vi

Maximum Length (m Maximum Lift (Fan Coil Above) (ft) Maximum Lift (Fan Coil Below) (ft)

CONDENSATE DRAIN SIZE (in.) % OD, Vie ID

'These units may oniy be matched with 38BK outdoor units. The 40QNH unit available in size 012 only. tFuil factory charge is shipped in the outdoor unit. The charge is determined based on 25 ft of line.

_......

40QNE009* 40QNH012*

9000 12,000

2.4 3.4

Accu Rater® Piston at Outdoor Unit

...

............

_..15

1...3.54 * 27.75

AccuRater Piston at Outdoor Unit

..................

34 35

Copper Tube, Aluminum Fin

2 2

115 V

35 35 16 16 30 30

R-22

...............

Integrated Microprocessor

Wireless

Yes Yes

Yes

2.0

1...3.94 X 27.75

230 V

\_P'-eiM^J

¡»«OUT Vltw

NOTES;

1. Dimensions in ( ] are in miliimelers.

2. Direction of airflow. Center of Gravity.

4. Minimum dearances: 4 in. on coil sides, 24 in. on fan side, and

30 in. service side.

* [235] ^

Fig. 3 — 38AN/BK Dimensional Drawing

rop Vltw

>ienT ti»i vn*

UNIT

AN009 55.0 25.0 AN012 62,0 28.1 BKD09 60.7 27.5 BK012 66.5 30.2

WEIGHT

[NL£T AIR

HiNIHUM CLEARANCE FOR SERVICE

2.36 OIA 160]

IRISHT SIDE VIEW I

EVAPORATOR

COIL

¿-KWCICOUT FOR LEFT SIDE

REFRIGERANT, DRAIN, POUER AND SIGNAL LINES

INDOOR AIR BLOWER WHEEL

NOTES:

1. Dimensions are in inches. Dimensions in [ ] are in miliimeters.

I BOTTOM VIETI

2. Direction of airflow.

3. Refrigerant, drain, and power connections may be made rear, left side or

right side.

4. Refrigerant ts metered by capillary tubes in the outdoor unit. Insulate both

refrigerant lines.

5. Clearances of ZW on top of and to the left of the fan coil unit are absolute

minimums, Clearances of 10" are recommended.

6. Do not insert a trap in condensate drain line. Drain is internally trapped.

Fig. 4 — 40QN Dimensional Drawing

INFRARED REMOTE OVERRIDE SWITCH CBEHIND ACCESS COVER)

‘INDOOR FAN MOTOR

KNOCKOUT FOR BOTTOM REFRIGERANT. DRAIN, POWER AND SIGNAL UNES

UNIT

40QN

WEIGHT A B

Lb Kg in.

009 18.7 8.5 33.46 850 11.02 012 24.2

11.0 36.61 930 11.81 300 7.28 185

KNOCKOUT FOR RIGHT SIDE REFRIGERANT, DRAIN, POWER AND SIGNAL LINES

in.

280

in. mm

6.29 160

Table 5 — System Piston Guide and

Refrigerant Charges

as" MAX (FOR COOLING ONLY AND HEAT PUMP SYSTEMS)

UNIT

Indoor Outdoor

40QNB009 38AN009 40QNB012 38AN012 40QNE009 38BK009 40QNH012 38BK012

'Charge is based on 25 ft of interconnecting tubing. Charge may need

to be added for longer tubing runs or when used with certain fan coiis. Check unit namepiate for required charge. This is a totai sys tem charge.

tNon-serviceabie Aeroquip piston.

POSSiBLE PIPiNG DIRECTIONS

INDOOR

PISTON

SIZE

Capillary Tube Capillary Tube 1.50 Capillary Tube Capillary Tube

32t 42t 42t

PREPUNCHED HOLES

OUTDOOR

PISTON

SIZE

30t

REQUIRED

SYSTEM

CHARGE

(lb)*

1.80

1.50

2.00

UNIT

GROUND-LEVEL

INSTALLATION

ROOFTOP

INSTALLATION

Fig. 6 — Maximum System Line Lengths

Step 4 — Mount Outdoor Section

1. If outdoor section is to be installed at ground level, mount on a solid, level support pad one in. longer and one in. wider than the outdoor section dimensions.

2. Provide sufficient clearance for airflow, wiring, refriger ant piping, service and maintenance. Provide a minimum clearance of 2 ft from obstructions in front of outdoor section, 2 ft on outdoor coil side, and 2’/2 ft on electrical and piping side. If more than one outdoor section is in stalled, provide a minimum clearance of 2 ft between sec tions. Position outdoor section so that water or ice from roof cannot fall directly on unit.

NOTE: The outdoor section can be installed higher than, lower than, or level with the elevation of the indoor

section. If outdoor section is mounted higher than the in door section, the vertical distance between the 2 units should not exceed 30 ft. If the outdoor section is installed lower than indoor section, the vertical distance between the units should not exceed 16 ft. See table below:

BOTTOM/REAR PIPING

Fig. 5 — Fan Coil Unit Refrigerant Piping

MAXIMUM DISTANCE BETWEEN OUTDOOR UNITS

Outdoor Section Higher 30 Ft Maximum Than Indoor Section (Vertical)

Outdoor Section Lower 16 Ft Maximum Than Indoor Section (Vertical)

NOTE: Maximum system piping length between indoor and outdoor units is 35 ft.

Fig. 7 — Fan Coil Unit Bracket Mounting (Size 009 Shown)

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