Installation Manual

ManualsBrandsAirQuest ManualsCooling & Air Quality4 Ton 19 SEER Variable Speed Air Conditioner Condenser

421 01 5900 02 10/25/17

Specifications subject to change without notice.

INSTALLATION INSTRUCTIONS

R- 410A Variable Speed Split System Air Conditioner

CVA9, HVA9, TVA9

These instructions must be read and understood completely before attempting installation.

TABLE OF CONTENTS

PAGE NO.

SAFE TY CONS IDERATIONS 1.............................

INSTALLATION RECOMM ENDATIONS 2....................

INSTALLATION 2.......................................

STEP 1 — CHECK EQUIPMENT AND JOB SITE 2.............

STE P 2 — INS TALL ON A SOLID, LEVEL MOUNTING PAD 2...

STE P 3 — CLEARANCE REQUIREME NTS 3.................

STEP 4 — OPERATING AMBIENT 3........................

STEP 5 — ELEVATE UNIT 3...............................

STE P 6 — MAKE PIPING CONNECTIONS 3..................

REFR IGERANT CONNECTIONS AND RECOM ME NDED

LIQUID AND VAPOR TUBE DIAMETERS (IN.) 4..............

STEP 7 — MAKE ELECTRICAL CONNECTIONS 5.............

STE P 8 — COMPRE SS OR CRANKCASE HEATER 6............

AIRFLOW SET UP FOR OBSERVER FURNACE

OR FCM 4X FAN COIL 6.................................

AIRFLOW SETUP FOR NON- COMM UNICATING FAN COIL 6...

AIRFLOW SET UP FOR NON- COMM UNICATING FURNACES 6..

STEP 9 — INST ALL ACCESSORIES 6.......................

STEP 10 — STAR T- UP 6..................................

STE P 11 — SYSTEM FUNCTI ONS AND

SEQUE NCE OF OPERATION 7............................

STE P 12 — CHECK CHARGE 7............................

REQUIRED CHARGE (VALUES IN LBS.)

ADJUSTM ENT FOR INDOOR COIL MODEL 8................

STE P 13 — PUMPDOW N & EVACUATION 9.................

MAJOR COMPONENT S 9.................................

TROUBLE SHOOT ING 10..................................

FACT ORY SUPP LIE D MODEL PLUG INFORMATION 10.........

RESI STANCE VALUES VS TEMP E RATURE 11.................

VARIABLE SPEED COMPRESSOR RESISTANCE 12.............

TROUBLE SHOOT ING 13..................................

FINAL CHECKS 13.......................................

CARE AND MAINTENANCE 13............................

TECHNICAL LABELS 14..................................

R-410A QUIC K RE FER ENCE GU I DE 18......................

IMPORTANT: Effective January 1, 2015, all split system and

packaged air conditioners must be installed pursuant to applicable

regional efficiency standards issued by the Department of Energy.

Information in these installation instructions pertains only to

CVA9, HVA9, TVA9 series units.

SAFETY CONSIDERATIONS

Improper installation, adjustment, alteration, service, maintenance,

or use can cause explosion, fire, electrical shock, or other

conditions which may cause death, personal injury, or property

damage. Consult a qualified installer, service agency, or your

distributor or branch for information or assistance. The qualified

installer or agency must use factory- authorized kits or accessories

when modifying this product. Refer to the individual instructions

packaged with the kits or accessories when installing.

Follow all safety codes. Wear safety glasses, protective clothing,

and work gloves. Use quenching cloth for brazing operations.

Have fire extinguisher available. Read these instructions

thoroughly and follow all warnings or cautions included in

literature and attached to the unit. Consult local building codes and

current editions of the National Electrical Code (NEC) NFPA 70.

In Canada, refer to current editions of the Canadian electrical code

CSA 22.1.

Recognize safety information. This is the safety- alert symbol

When you see this symbol on the unit and in instructions or

manuals, be alert to the potential for personal injury. Understand

these signal words; DANGER, WARNING, and CAUTION. Th ese

words are used with the safety - alert symbol. DANGER identifies

the most serious hazards which will result in severe personal injury

or death. WARNING signifies hazards which could result in

personal injury or death. CAUTION is used to identify unsafe

practices which would result in minor personal injury or product

and property damage. NOTE is used to highlight suggestions

which will result in enhanced installation, reliability, or operation.

CUT HAZARD

Failure to follow this caution may result in personal injury .

Sheet metal parts may have sharp edges or burrs. Use care and

wear appropriate protective clothing and gloves when

handling parts.

CAUTION

WARNING

UNIT OPERATION AND SAFETY HAZARD

Failure to follow this warning could result in personal injury

or equipment damage.

R- 410A refrigerant systems operate at higher pressures than

standard R- 22 systems. Do not use R- 22 service equipment

or components on R - 410A refrigerant equipment.

WARNING

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal

injury or death.

Before installing, modifying, or servicing system, main

electrical disconnect switch must be in the OFF position.

There may be more than 1 disconnect switch. Lock out and

tag switch with a suitable warning label.

Indoor Thermostat Control Options

Model

Observer

Wall

Control

Standard

Thermostat

CVA9, HVA9,

TVA9

Yes* Yes* *

NOTE: T S TAT0201CW Communicating Wi- Fi wall control. Non Wi- Fi

cannot be used.

All trademarks are the property of their respective owners. Wi- Fi is a regis-

tered trademark of Wi - Fi Alliance Corporation.

* Version 5.0 software or newer.

** Using standard thermostat limits functionality of syste m.

Summary of content (18 pages)

PAGE 1
INSTALLATION INSTRUCTIONS R- 410A Variable Speed Split System Air Conditioner CVA9, HVA9, TVA9 These instructions must be read and understood completely before attempting installation. TABLE OF CONTENTS PAGE NO. SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 INSTALLATION RECOMMENDATIONS . . . . . . . . . . . . . . . . . . . . 2 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 STEP 1 — CHECK EQUIPMENT AND JOB SITE . . . . . . .
PAGE 2
! WARNING ELECTRICAL HAZARD - HIGH VOLTAGE! Failure to follow this warning could result in personal injury or death. Electrical components may hold charge. DO NOT remove control box cover for 2 minutes after power has been removed from unit. CAUTION ! EQUIPMENT DAMAGE HAZARD Failure to follow this caution may result in equipment damage.
PAGE 3
Step 2 — Install on a Solid, Level Mounting Pad Step 5 — Elevate Unit If conditions or local codes require the unit be attached to pad, tie down bolts should be used and fastened through knockouts provided in unit base pan. Refer to unit mounting pattern in Fig. 2 to determine base pan size and knockout hole location. For hurricane tie downs, contact distributor for details and PE (Professional Engineer) Certification, if required. On rooftop applications, mount on level platform or frame.
PAGE 4
Table 1 – Refrigerant Connections and Recommended Liquid and Vapor Tube Diameters (in.) CVA9, HVA9, TVA9 24 25 36 37 48, 49 60 LIQUID Connection DiameTube Diameter ter 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 VAPOR† Max (Rated) Diameter 3/4 7/8 7/8 (1 - 1/8) (1 - 1/8) (1 - 1/8) Connection Diameter 3/4 3/4 3/4 7/8 7/8 7/8 Minimum Tube Diameter 5/8 5/8 5/8 5/8 3/4 3/4 { Units are rated with 25 ft. (7.6 m) of lineset.
PAGE 5
Final Tubing Check Observer® Control Wiring - Observer Wall IMPORTANT: Check to be certain factory tubing on both indoor and outdoor unit has not shifted during shipment. Ensure tubes are not rubbing against each other or any sheet metal. Pay close attention to feeder tubes, making sure wire ties on feeder tubes are secure and tight. Connect four wires from Observer to communicating furnace / fan coil with communicating motor capability.
PAGE 6
Final Wiring Check IMPORTANT: Check factory wiring and field wire connections to ensure terminations are secured properly. Check wire routing to ensure wires are not in contact with tubing, sheet metal, etc. Ensure that high and low voltage is separated where possible, to minimize induced noise from VFD to communication wiring.
PAGE 7
! CAUTION PERSONAL INJURY HAZARD Failure to follow this caution may result in personal injury. Wear safety glasses, protective clothing, and gloves when handling refrigerant. ! CAUTION The inverter Motor Operational Control (MOC) then outputs the three- phase PWM signal and frequency that gently ramps the compressor speed up to stage 2, and then will adjust to the demanded speed. The gentle ramp- up results in no locked rotor amps to the compressor motor.
PAGE 8
For standard refrigerant line lengths (80ft/24.4 m or less), allow system to operate in cooling mode at least 25 minutes. If conditions are favorable, check system charge by subcooling method. If any adjustment is necessary, adjust charge slowly and allow system to operate for 25 minutes to stabilize before declaring a properly charged system. If the indoor temperature is below 70°F (21.11°C), or the outdoor temperature is not in the favorable range, adjust charge for line set length above or below 15ft (4.
PAGE 9
Evacuation and recovery of refrigerant from CVA9, HVA9, TVA9 1. Connect gauges to CVA9, HVA9, TVA9 liquid and vapor service valve ports to monitor operating pressures during and at completion of the procedure. Attach recovery system or vacuum pump to gauge set as needed for the service procedure. The service valves must be open to evacuate the unit through the line set service ports. 2. Begin evacuation or refrigerant. Allow extra time for refrigerant recovery and establishing a thorough evacuation.
PAGE 10
Variable Speed Compressor This unit contains a variable speed rotary compressor that has a wide operating range. It operates on a variable 3 phase sine wave provided by the inverter. This compressor can only be operated by the specific inverter supplied with the unit. ! Table 3 – Factory Supplied Model Plug Information CAUTION EQUIPMENT DAMAGE HAZARD Failure to follow this caution may result in equipment damage and/or improper operation. Do not attempt to apply line voltage directly to the compressor.
PAGE 11
Refer to Table 4 and Fig. 18 and 19 for resistance values versus temperature. Table 4 – 10K/50Kohm Resistance Values vs Temperature 10Kohms _C (_F) TEMPERATURE 25.0 (77.0) 0.0 (32.0) -28.0 (-18.4) RESISTANCE (Kohms) 10.0 + / - 2.3% 32.6 + / - 3.2% 85.5 + / - 3.4% Outdoor Coil Thermistor The outdoor coil thermistor is a 10Kohm resistor used for multiple system operations. It provides the coil/liquid line temperature to the AC unit board and Observer® Wall Control.
PAGE 12
Table 5 – Variable Speed Compressor Resistance (winding resistance at 70_F 20_F) MODEL CVA9, HVA9, TVA9 (OHMs) WINDING Between terminals Between terminal & ground 24 25 36 37, 48 49, 60 1.13 .59 .59 .37 .24 >1 mega ! CAUTION UNIT DAMAGE HAZARD A14023 Fig. 22 - Suction Thermistor (OST) Attachment (On Suction Tube) Failure to follow this caution may result in equipment damage and/or improper operation. Do not use Meggar for measuring the winding resistance.
PAGE 13
FINAL CHECKS Status Code Recall Mode Active status codes are stored in memory even when power is absent. The most recently flashing status code (highest priority active) can be recalled from memory via status code recall mode and displayed using the amber LED. The status code recall mode is accessed by shorting (use a clip wire) the “force defrost” connector (labeled J2 on the board) and then power ON the unit. Please make sure the unit is turned OFF before shorting the pins.
PAGE 14
Specifications subject to change without notice. 421 01 5900 02 29.49 0.52 4.64 237 160 30.15 0.54 4.64 241 164 30.29 0.55 4.65 242 165 SCFM MBh† S/T‡ AMPS* HI PR LO PR SCFM MBh† S/T‡ AMPS* HI PR LO PR Comfort + De- Humidity Efficiency Maximum 72 SCFM MBh† S/T‡ AMPS* HI PR LO PR STAGE- 5 Mode Maximum Efficiency 30.58 0.55 5.83 256 160 30.94 0.54 5.94 257 159 SCFM MBh† S/T‡ AMPS* HI PR LO PR SCFM MBh† S/T‡ AMPS* HI PR LO PR 30.22 0.52 5.
PAGE 15
421 01 5900 02 Specifications subject to change without notice. 15 43.97 0.53 8.60 263 157 SCFM MBh† S/T‡ AMPS* HI PR LO PR Efficiency 990 43.10 0.52 6.55 239 158 1050 43.48 0.53 6.68 239 160 1080 43.11 0.53 6.49 235 161 SCFM MBh† S/T‡ AMPS* HI PR LO PR SCFM MBh† S/T‡ AMPS* HI PR LO PR SCFM MBh† S/T‡ AMPS* HI PR LO PR Comfort + De- Humidify Efficiency Maximum STAGE- 5 Mode 72 43.98 0.52 8.60 264 156 SCFM MBh† S/T‡ AMPS* HI PR LO PR Maximum 43.26 0.51 8.
PAGE 16
Specifications subject to change without notice. 421 01 5900 02 59.00 0.53 8.60 263 157 SCFM MBh† S/T‡ AMPS* HI PR LO PR Efficiency Maximum Efficiency Comfort + De- Humidify 54.08 0.52 10.98 236 151 53.80 0.51 10.89 236 150 54.94 0.53 11.36 234 154 SCFM MBh[ S/T] AMPS* HI PR LO PR SCFM MBh[ S/T] AMPS* HI PR LO PR SCFM MBh[ S/T] AMPS* HI PR LO PR STAGE- 5 Mode 72 59.48 0.52 8.60 263 157 SCFM MBh† S/T‡ AMPS* HI PR LO PR Maximum 58.25 0.51 12.
PAGE 17
421 01 5900 02 Specifications subject to change without notice. 17 72.44 0.51 8.60 263 157 72.23 0.52 8.60 263 157 SCFM MBh† S/T‡ AMPS* HI PR LO PR SCFM MBh† S/T‡ AMPS* HI PR LO PR Efficiency 63†† 1680 66.23 61.81 0.69 0.72 8.76 8.87 259 256 143 132 1600 66.10 61.52 0.68 0.71 8.76 8.87 259 256 143 132 1488 65.29 60.75 0.67 0.70 10.61 16.67 306 443 161 148 67 58.03 1.00 8.92 254 125 57.24 1.00 8.92 254 125 55.91 1.00 18.98 502 150 57 69.91 0.54 10.61 306 161 69.15 0.52 10.61 306 161 68.
PAGE 18
R- 410A QUICK REFERENCE GUIDE  Observe all WARNINGS, CAUTIONS, NOTES, and bold text.  R- 410A refrigerant operates at 50% - 70% higher pressures than R- 22. Be sure that servicing equipment and replacement components are designed to operate with R- 410A.  R- 410A refrigerant cylinders are rose colored.  Recovery cylinder service pressure rating must be 400 psig, DOT 4BA400 or DOT BW400.  R- 410A systems should be charged with liquid refrigerant.