Specifications

ManualsBrandsCarrier ManualsHeat Pump38QRF036

40QNC018-036

Cooling Only

40QNQ018-036

Heat Pump

Duct-Free Fan Coil Units

Installation, Start-Up and

Service Instructions

CONTENTS

Page

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

GENERAL ........................................ l

INSTALLATION ................................ 1-13

Step 1 -- Complete Pre-lnstallation Checks ...... l

i UNPACK UNITS

i INSPECT SHIPMENT

f CONSIDER SYSTEM REQUIREMENTS

Step 2 -- Mount Unit ............................. 5

Step 3 -- Complete Refrigerant Piping

Connections ................................... 5

i REAR PIPING

i SIDE ORBOTTOM PIPING

i ROUTING THE DRAIN HOSE AND REFRIGERANT

PIPING

i INSTALLING THE INDOOR UNIT BODY TO THE

WALL HANGING BRACKET

i OUTDOOR UNITS

i MAKE PIPING SWEAT CONNECTIONS

i AIR PURGING AND LEAK TEST

Step 4 -- Make Electrical Connections ........... 8

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

SERVICE ........................................ 14

TROUBLESHOOTING .......................... 14,15

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 cleaning and replacing filters. All other operations should be

pertbnned by trained service personnel. When working on air

conditioning equipment, observe safety precautions in litera-

ture, tags, and labels attached to unit.

Follow all safety codes. Wear safety glasses and work

gloves. Use quenching cloth for brazing operations. Have fire

extinmlisher available. Read these instructions thom,Lghly.

Consult local building codes and the 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 off accessory heater power if applicable. Elec-

trical shock can cause serious personal injury.

GENERAL

This system uses R-410A, which Ms higher pressures than

R-22 and other refiigerants. No other refrigerant may be

used in this system. All equipment must be desiNled to

handle R-410A retiigerant. If unsure about equipment, con-

sult the equipment manufacturer.

These instructions cover the installation, start-up and

service of cooling only and heat pump duct-fiee systems.

INSTALLATION

Step 1 -- Complete Pre-lnstallation Checks

UNPACK UNITS (See Fig. 1) 6 Move the unit to final loca-

tion. Relnove unit fiom carton, being careful not to damage

service valves and miltes. See Table 1A tbr installation materi-

als included in shipment and see Table 1B for field-supplied

materials needed to complete the installation.

Fig. 1 -- 40QNC,QNQ Units

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

Catalog No. 02-40QN0001-SI Printed in U,S.A. Form 40QN-SSI Pg 1 3-06 Replaces: New

Summary of content (16 pages)

PAGE 1
40QNC018-036 Cooling Only 40QNQ018-036 Heat Pump Duct-Free Fan Coil Units Installation, Start-Up and Service Instructions CONTENTS Page SAFETY CONSIDERATIONS ...................... 1 GENERAL ........................................ l INSTALLATION ................................ 1-13 Step 1 -- Complete Pre-lnstallation Checks ...... l i UNPACK UNITS i INSPECT SHIPMENT f CONSIDER SYSTEM REQUIREMENTS Step 2 -- Mount Unit ............................. 5 Step 3 -- Complete Refrigerant Piping Connections ......
PAGE 2
Table 1A -- Installation Materials -- Included In Shipment DESCRIPTION Wall Hanging QTY USAGE For indoor unit installation. Bracket Screws, 4xL10 For affixing unit and hanging bracket. 5/14" Screws, 5xL25 Wireless Remote Control Mounting Bracket For wall hanging bracket installation. For wireless remote control mounting bracket installation. For wireless remote control installation.
PAGE 3
INSPECT SHIPMENT 6 File a claim with the shipping company if shipment is dmnaged or incomplete. Check the unit nameplate to ensure unit matches the job requirelnents. CONSIDER SYSTEM REQUIREMENTS d Consult local building codes and NEC tbr special installation requirelnents. Use only designated indoor units with outdoor units. See Tables 2 and 3. See Fig. 2 for unit dimensions. Allow sufficient space for airflow cleaxance, wiring, reli-igerant piping, mid servicing units. See Fig. 3.
PAGE 4
Table 3 -- Physical Data SYSTEM SIZE NOMINAL CAPACITY (Btuh) OPERATING WEIGHT (Ib) MOISTURE REMOVAL RATE (Pints/hr) (40QNC/QNQ) REFRIGERANT Type Control Device (Cooling) Control Device (Heating) Factory Charge (Ib)* INDOOR FAN Rpm/Cfm (High) Rpm/Cfm (Med) Rpm/Cfm (Low) Motor Watts Blowers Quantity...Size INDOOR COIL Face Area (sq ft) No. Rows FPI (40QNC/QNQ) Circuits FILTERS Quantity...Size AIR SWEEP Horizontal Vertical (in.
PAGE 5
Step 2 -- Mount Unit -- Before mounting the 40QNC, QNQ unit on the wall with a walt hanging bracket, consider how the unit will be connected to the reliigerant piping. The indoor unit can be connected in four ways. Refer to Fig. 4 tbr connection options. When the piping is connected to points 1, 2 or 4, relnove the kalockout either at the side or at the bottom of the unit. The iMoor units are mounted on the walt with a wall hanging bracket.
PAGE 6
0 Drill at Slope Outdoor [ 0 o side i \1o oo! 0 o 0 o ",...,.,,_A-"-_. ........ O_._.O_t/4o o to 1/2 in. lower _) @ Indoor unit piping @ Connection @ Drain hose Fig. 7 -- Placement of Connection wiring Piping Fig. 10 -- Location of Piping, Hose and Wiring OUTDOOR UNITS 6 Outdoor units may be connected to indoor units using field-supplied robing of retiigerant grade and condition. See Table 3 tbr correct line sizes. Do not use less than 10 ft of interconnecting robing. Fig.
PAGE 7
UNIT SIZE DIMENSION Lubricate the robe end and thread of the flare fitting with antitieeze oil. Tighten the fitting several turns, then ti_lten it fully with two wrenches by applying the tightening torque indicated in Table 4 and Fig. 14. B Wall Hanging Bracket Hook 40QNC01824 10.6 40QNC030 12.2 40QN0036 12.2 40QNQ018 10.6 40QNQ024 10.6 40QNQ030 12.2 40QNQ036 12.2 Insufficient tightening torque will cause gas leaks.
PAGE 8
@ Three-way @ Flare nut @ Liquid @ Valve cap @ Mixed-phase @ Valve needle @ Indoor unit @ Needle valve (mixed-phase) valve line (small @ Allen (hex. head) wrench @ Outdoor unit @ Two-way @ Vacuum pump valve (liquid) diameter) line (large diameter) Fig. 15 -- Air Purging Step 4 -- Make Electrical Connections Unit cabinet must have an uninterrupted, unbroken electrical mound to minilnize the possibility of personal injury if an electrical fault should occur.
PAGE 9
THERMISTOR EQUIVALENCE TEMPERATURE STEP I.R. I I _ |i _._ z MOTOR °C o 85 35 B, 500 72 22 11,400 32 0 32,500 DRIVE REMOTE _ DISPLAY I I _ RES ] STANCE °F ALL THERMISTORS ARE IDENTICAL 2 il 23 so7 I I 0 YEL YEL LED BOARD ]R l' CON i °Yo N JlO 24V COMPR TB3 _]X, MODULAR 1PCB _A _ CONTROL _GRN/YEL TO LEGEND EQUIP.
PAGE 10
THERMISTOR J EQUIVALENCE TEMPERATURE STEP I.R. MOTOR DRIVE REMOTE _ DISPLAY " # / 4567 2 RES [STANCE °F °C 95 35 72 22 32 0 ALL u 5,500 11,400 32, THERMISTORS ARE SO0 IDENTICAL E ,,I_ Im I YEL BY l i INTERNAL THERMAL OVERLOADS. D 4. TRANSFORMER THE PRIMARY 5. COMPRESSOR CRANCKCASE ON 538QNF030.
PAGE 11
o_ CN <0 FqZ THERMI5TOR EQUIVALENCE TEMPERATURE RESISTANCE °F °C 95 35 8,500 Q 72 22 11,400 32 0 32,500 ALL THERMISTORSARE IDENTICAL NOTES 1. ..... I_ IF IDc RA I _ ANY MUST WITH 4. DISPLAY INVERTER THE ORIGINAL BE REPLACED, IT TYPE 90_C WIRE WIRE FURNISHED MUST BE REPLACED OR ITS EQUIVALENT. _ _T_%**_%_"_ _!_?_g°Sc _........ _._?"_O_L_%;_2L_OSOt_O;?L ......... RED I0 OF TRANHBFORMIEMRAR_ABs I NT _ .................
PAGE 12
o= THERMISTOR CN <:0 FqZ ©rqq RES [ STANCE °F °C o 95 35 6,500 72 32 22 0 ALL _ EQUIVALENCE TEMPERATURE 11 , 400 32,500 THERMISTORS ARE IDENTICAL _ L I I i I_ [DC AY 5 • BY INTERNAL THERMAL OVERLOADS• RA DISPLAY INVERTER 4, TRANSFORMERHAS INTERNAL 2A THERMAL FUSE ON THE PRIMARY SIDE, 5, COMPRESSORCRANCKCASE HEATER INSTALLED ON 538QNF030.
PAGE 13
Table 5 -- 40QNC,QNQ Fan Coil Electrical Data VOLTAGE RANGE* UNIT SIZE V-PH-Hz Min Max FLA FAN Motor Power (Watts) 64 74 POWER MIN WIRE SIZE MCA MOCP 0.48 0.48 15 15 14 14 40QNC01824 40QNC030 208/230-1-60 208/230-1-60 187 187 253 253 0.38 0.38 40QNC036 208/230-1-60 187 253 0.44 74 0.55 15 14 40QNQ018 208/230-1-60 187 253 0.38 64 0.48 15 14 40QNQ024 208/230-1-60 187 253 0.38 64 0.48 15 14 40ONO030 40QNQ036 208/230-1-60 208/230-1-60 187 187 253 253 0.38 0.
PAGE 14
NOTE: Do not install a suction-line filter drier in the mixed phase line. SERVICE Refrigerant Betbre pertbnning recomlnended maintenance, be sure unit main power switch is turned off Failure to do so may result in electrical shock or injury tbnn rotating fan blade. Charging To prevent personal injury, wear safety glasses and gloves when handling reti-igerant. Do not overcharge system d this can cause compressor flooding.
PAGE 15
Table 7 -- Troubleshooting PROBLEM POSSIBLE CAUSE Compressor and Fan of the Outdoor Unit Will Not Start SOLUTION Unit not energized Main switch is set to OFF Check the main power connection. Check and put it to ON position. Main switch fuses are blown Compressor cycling protection Replace fuses. Wait for 3 minutes. is on Main power voltage is too low Electrical connections are too loose or are wrong Check and set to the correct voltage.
PAGE 16
Copyright 2006 Carrier Corporation Manufacturer reserves the right to discontinue, Catalog No. 02-40QN0001-SI or change at any time, specifications Printed in U.S.A. or designs without notice and without incurring obligations.