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Table 1 — Acceptable System Combinations for Indoor and Outdoor Units

OUTDOOR UNIT

INDOOR UNIT

Type

Model Number 38

Type

Model Number 40QA

Cooling Only

HDC018

Cooling Only

B024

HDC024

B024

HDC030

B036

HDC036

B036

HDC048

B048

HDC060

B060

HDC018

Heat Pump

E024

HDC024

E024

HDC030

E036

HDC036

E036

HDC048

E048

HDC060

E060

Cooling Only

Multi-Split*

HDS024

Cooling Only

(2) B024†

HDS048

(4) B024†
(3) B024**

(2) B024

HDS024

Heat Pump

(2) E024†

HDS048

(4) E024†
(3) E024**

(2) E024

Heat Pump

QRC018

Heat Pump

E024

QRC024

E024

QRC030

E036

QRC036

E036

QRC048

E048

QRC060

E060

*Multi-split systems can accommodate up to 4 fan coil units of vari-

ous types with one condensing unit. The combinations listed in this
table are those combinations which use only ceiling-suspended units
(not combined with any other type of fan coil unit). Refer to system
presale literature or Price Pages for more details on other system
combinations.

†Units must be field reconfigured for 1

1

2

ton (18,000 Btuh) opera-

tion. See Before Installation section on page 3 for details.

**One circuit (2 units) unit must be field reconfigured for 1

1

2

ton

(18,000 Btuh) operation. See Before Installation section on page 3
for details.

NOTES:
1. If your particular application requires a heat pump outdoor unit

matched with a cooling-only fan coil unit, contact your local rep-
resentative for more details.

2. Numbers in ( ) indicate quantities when there is more than one fan

coil unit in the system.

Be sure unit will be operated within the application guide-

lines shown in Table 2. When installing the 38QRC or HDC
units, note that for cooling operation when the outdoor-air
temperature is below 55 F, the accessory low ambient or win-
ter start kit will be required. Systems using 38HDS units can
operate down to 40 F outdoor-air temperature as shipped from
the factory. If operation at outdoor ambients between 40 F
and −20 F is desired, an accessory winter start kit will be
required for the 38HDS unit.

To install this system, you will need:

• 1 (or more)* 40QAB or 40QAE fan coil unit(s) with stand-

ard remote thermostat

• 1 38HDC, HDS, or QRC outdoor unit
• 1 low ambient kit or 1 winter start kit (if required for your

application)

• 1 power ventilation kit (if required for your application)
• 1 condensate pump kit (if required for your application)
*More than 1 fan coil unit may be used with the 38HDS

multi-split units. Refer to 38HDS unit Price Pages for com-
plete details.

NOTE: Refrigerant pipe, drain pipe, wire, etc., are also re-
quired to install unit and are field-supplied.
Be sure you have the required parts before beginning instal-
lation. The 40QA unit utilizes a standard 24 v control sys-
tem (see Tables 3A and 3B) for ultimate flexibility while de-
livering optimal levels of comfort and efficiency. Be sure to
follow these instructions carefully to obtain proper function-
ing of the unit.

Table 2 — Application Range

COOLING

Maximum

Minimum

Indoor

Outdoor

Indoor

Outdoor

95 F DB

125 F DB

67 F DB

55 F DB*

71 F WB

57 F WB

40 F DB†

HEATING (Heat Pump Systems Only)

Maximum

Minimum

Indoor

Outdoor

Indoor

Outdoor

80 F DB

75 F DB

55 F DB

2

20 F DB

71 F WB

65 F WB

LEGEND

DB

— Dry Bulb

WB — Wet Bulb

*This value is for 38HDC, QRC systems. The 38HDC or QRC unit

may be equipped with an accessory low-ambient control or winter
start kit that will allow operation down to

2

20 F.

†This value is for 38HDS systems. The 38HDS unit may be equipped

with an accessory winter start kit that will allow operation down to
−20 F.

2

Содержание 40QA

Страница 1: ...ns should be performed by trained service personnel When working on air conditioning equipment observe precautions in lit erature and on tags and labels attached to unit Follow all safety codes Wear s...

Страница 2: ...ure is below 55 F the accessory low ambient or win ter start kit will be required Systems using 38HDS units can operate down to 40 F outdoor air temperature as shipped from the factory If operation at...

Страница 3: ...r ft 150 30 CONDENSATE DRAIN CONNECTION Pipe Thread MPT CONDENSATE DRAIN SIZE in 3 4 LEGEND TXV Thermostatic Expansion Valve Field reconfigured to 18 000 Btuh 11 2 tons See Before Installa tion sectio...

Страница 4: ...ove ft 65 Maximum Lift Fan Coil Below ft 150 CONDENSATE DRAIN CONNECTION Pipe Thread MPT CONDENSATE DRAIN SIZE in 3 4 Field reconfigured to 18 000 Btuh 11 2 tons See Before Installation section on pag...

Страница 5: ...369 on bottom When facing unit discharge UNIT 40QA WEIGHT lb A B E F G QAB QAE ft in mm ft in mm ft in mm ft in mm ft in mm 024 108 110 4 215 16 1294 3 10 1169 4 15 8 1260 1 95 8 549 036 117 119 4 10...

Страница 6: ...t of the unit Wooden Structure Install hanging bolts on a square wooden piece placed over beams Newly Built Concrete Slab Install hanging bolts with in serts embedded bolts etc Metal Structure Install...

Страница 7: ...cooler buried section during extended periods of unit shutdown causing refrigerant slugging and possible com pressor damage at start up To connect piping 1 Install insulation Insulate supply and retu...

Страница 8: ...nstall factory supplied piston enclosed in a bag taped inside the out door unit into the AccuRater metering device located in the service valve on the outdoor unit Fig 14 IMPORTANT The factory supplie...

Страница 9: ...ls Check outdoor unit name plate for required charge NOTES 1 All pistons are Chattleff 9B9 type 2 All cooling units have a full factory charge for the smallest possible system combination 3 Service va...

Страница 10: ...ndensate pump may be ordered as a field installed accessory Table 6 Required Piston Size for AccuRaterT Metering Device Cooling Only Condensing Units With Heat Pump Fan Coil Units INDOOR UNIT 40QAE OU...

Страница 11: ...nect to the fan coil unit Place wire through hole on the control box Fig 18 Connect wire to high voltage ter minal board TB1 and ground screw When routing the wire in the unit use care to keep the wir...

Страница 12: ...rminal block Connect the wires Y1 to Y and C to C See Fig 20 HEAT PUMP SYSTEMS The following connections must be made to the 38QRC unit for it to operate as a system with the indoor unit Route 6 wires...

Страница 13: ...ave been installed and that the discharge louvers are positioned correctly After Extended Shutdown If the system has been turned off for more than 12 hours turn on the indoor and outdoor unit disconne...

Страница 14: ...r COOLING MODE OPERATION When the room ther mostat senses a demand for cooling the fan coil relay board is energized The indoor fan s will start in the selected speed if it is not already operating Th...

Страница 15: ...o prevent possible reverse rotation of the compressor Should any of these devices trip after the compressor is energized the Cycle LOC protection device will lock out the outdoor unit turn it off to p...

Страница 16: ...ins to flush out debris To Clean Condensate Drains Clean all drains and drain pans at the start of each cooling season Check the flow by pouring water into the drain TO CLEAN OR REPLACE DRAIN PAN 1 Pl...

Страница 17: ...hermostat Outdoor unit outdoor coil restricted Remove obstruction Fan speed is set too low Adjust fan speed to high or auto using the Fan button on the thermostat System does not heat properly Air fil...

Страница 18: ...S Pump Shutoff Switch RVS Reversing Valve Solenoid SC Start Capacitor SR Start Relay SSDR Safety Switch Delay Relay TB Terminal Block TDR Time Delay Relay TRAN Transformer Terminal Marked Terminal Unm...

Страница 19: ...Heat pump fan coil units only Fig 25 Typical System Wiring Cooling Only Systems or Condensing Unit with Heat Pump Fan Coil Unit Systems 19...

Страница 20: ...Fig 26 Typical System Wiring Heat Pump Systems 20...

Страница 21: ......

Страница 22: ...l programs include a video cassette and or slides and a companion booklet Use these for self teaching or to conduct full training sessions For a free Service Training Material Catalog STM call 1 800 9...

Страница 23: ...GLE PHASE POWER HAS GROUND WIRE BEEN CONNECTED HAS THE CORRECT SIZE FUSE OR HACR BREAKER BEEN PROVIDED ARE POWER WIRES TO THE UNIT SIZED AND INSTALLED PROPERLY IS THE DISCONNECT SWITCH INSTALLED IN SI...

Страница 24: ...BEEN ON FOR 24 HOURS MEASURE AND RECORD THE AIR ENTERING OUTDOOR UNIT F AIR ENTERING INDOOR UNIT F DISCHARGE LINE TEMPERATURE F VAPOR LINE TEMPERATURE F MEASURE AND RECORD THE VAPOR LINE PRESSURE PSIG...

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