Carrier 38HDF018300 User Manual HEAT PUMP Manuals And Guides L1002285

CARRIER Air Handler (indoor blower&evap) Manual L1002285 CARRIER Air Handler (indoor blower&evap) Owner's Manual, CARRIER Air Handler (indoor blower&evap) installation guides

User Manual: Carrier 38HDF018300 38HDF018300 CARRIER HEAT PUMP - Manuals and Guides View the owners manual for your CARRIER HEAT PUMP #38HDF018300. Home:Heating & Cooling Parts:Carrier Parts:Carrier HEAT PUMP Manual

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1"1"1

Installation Instructions
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.

¸¸ i i =iL } ! /(

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.

40QNC,
NOTE:
Read
installation,

UNIT

the entire

OPERATION

QNQ Unit

instruction

AND SAFETY

manual

before

starting

the

Recognize safety information. This is the safety-alert symbol/k
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. These
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.

HAZARD

Failure to follow this warning could result in personal injury or
equipment damage.
Puron refrigerant systems operate at higher pressures than
standard R-22 systems.
To avoid damage to the unit or
possible personal injury, do not use R-22 service equipment or
components on Puron refrigerant equipment.

ELECTRICALSHOCK

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.

PERSONAL
HAZARD

INJURY AND EQUIPMENT

Failure to follow this caution
and / or equipment damage.

DAMAGE

may result in personal injury

DO NOT operate the unit without a filter or with grille
removed.

DIMENSIONS

- INDOOR
.I

A08433

Model

Size

In. (mm)

Operating

Weight

In. (mm)

Ib (kg)

18k

42.5

(1080)

11.6

(295)

7.9 (201)

61 (14.1)

24k

42.5

(1080)

11.6

(295)

7.9 (201)

61 (14.1)

60k

57.5

(1461)

13.4

(340)

9.5 (241)

51 (28.2)

36k

57.5

(1461)

13.4

(340)

9.5 (241)

51 (23.2)

Fig. 1 - 40QNC,QNQ

DIMENSIONS

Unit Dimensions

- OUTDOOR

JUNCTION BOX FOR_
POWER SUPPLY g
CONTROL CONNECTIONS

"B"
FIELD

CONTROL 8UPPLY_
WIRE ENTRY
HOLE W/GROMMET

7/8"(22,2)

"DIA VAPOR LINE
CONN.
FEMALE SWEAT CONN.

LIQUID

DIA.(9.S3)
LINE

FENALESWEATCONN*

FRONT ViEW

WIND

BAFFLE

Male flare

connection

for Heat

Pumps

ACCESSORY

[__
ORAI N HOLE5%,,,

(TYP_

__
"E"

I'0"-7
(191)'zr
t/2 _ -

I<1

]

"_,'_

"Pi

-I

UNIT

OPERA

SIZE

! -0'_24;,2"

"tNG WT

in.

018

5/8

15.88

166

75.3

024

s/a

15.88

176

79.8

030

3/4

19.05

187

84.8

036

3/4

19.05

250

113.4

018

s/_

15.88

166

75.3

024

s/_

15.88

176

79.8

030

3/4

19.05

187

84.8

036

3/4

19.05

232

105.2

38HDF

38QRF

0'-0

11/16

as) "_

_, t

m...........

_ I o'-_" I_-

Z
&
qmF

(_.?p2)

UNIT

018

036
Dimensions

L_
TOP

VIEW

CHASSIS

38QRF
Unit Size

NOTE:

IVODELS

38HDF
Unit Size

024,030

i_,__._" "J

SIZE
(Reference)

024

030,036
shown

in feet-inches.

2'-1 _/8"
(638.2)

3'-0_s/16"
(938.2)

1 '-29/_6 "
(369.9)

1 '-4"
(406.4)

1'-11z/_6"
(595.3)

1'-53/16 "
(436.6)

1'-5V_"
(435)

1'-10"
(559.1)

1'-1 "
(330.2)

0'-6s/8 "
(168.3)

0'-11_/4"
(285.8)

O'-2W16"
(75)

0'-6"
(152.4)

0.6

2'-7V8"
(790.6)

3'-015/16"
(938.2)

1 '-29/16 "
(369.9)

1 '-4"
(406.4)

1'-117/16"
(595.3)

1%53/16"
(436.6)

1'-11 Vs"
(587.4)

2'-4"
(711.5)

1'-2"
(355.6)

0'-63/4 "
(171.5)

0'-11s/8"
(295.3)

0'-215/16"
(75)

0'-6"
(152.4)

1.0

3'-13/16 "
(944.6)

3'-89/16 "
(1131.9)

1'-51/16 "
(433.4)

1'-67/16 "
(468.3)

2'-61/2 "
(774.7)

1'-75/8 "
(498.5)

2'-53/16 "
(741)

O'_81/B ',
(206.4)

1'_37/B ',
(403.2)

0'_37/16 ',
(88)

0'_61/2 ',
(165.4)

Dimensions

2'-101/16 "
(865.5)

1 '-111/16"
(347.7)

in ( ) are millimeters.

A08434

Fig. 2 - 38HDF, QRF Unit Dimensions

CLEARANCES

- INDOOR
4tn
mln.

mln.

m!n.

I
i

,,j

)

80 in.
min.

A08357

Fig. 3 - 40QNC,QNQ

CLEARANCES

Unit Clearances

- OUTDOOR

Air-outlet
E

A08436

UNIT

Coil Facing

Wall -

in, (mm)

Fan Facing

Wall

24 (610)

36 (914)

8 (203)

6 (152)

8 (203)

6 (152)

36 (914)

Fig. 4 - Outdoor

Unit Clearance

in. (mm)

These

installation

systems

listed

Parts

List

Indoor
The

instructions
in table

cover

the installation

of the matched

items

are included

with

the indoor

Allow

sufficient

proper

airflow

for

unit:

minimum

Piping:

Table
Description

I - Installation

required

Piping

around

the

indoor

and servicing.

and
Refer

outdoor

to Fig.

unit

for

3 and Fig.

For Indoor Unit Installation

The

(3 m).

Screws, 4XLIO

For Attaching The Remote Control
Holder To The Wall

Screws, 5XL25

5/14"

For Attaching The Mounting
The Wall

minimum

and insulation

length

Refer

to table

Table

Bracket To

Remote Control
1
For Controlling Unit
Remote Control
1
Holder For Remote Control
Holder
5 screws for unit sizes 18 and 24. 14 screws for unit sizes 30 and 36.

is field

supplied.

between

the indoor

and outdoor

3 for the

maximum

lengths

3 - Maximum

Refrigerant

units

is 10 fl

allowed.

Line

Lengths

Unit
Size
18K

Max Line
Length if(m)
200 (61)

Max Elevation (ID
over OD) if(m)
65 (19.8)

Max Elevation (OD
over OD) ft(m)
200 (61)

24K
3OK

200 (61)
200 (61)

65 (19.8)
65 (19.8)

200 (61)
200 (61)

36K

200 (61)

65 (19.8)

200 (61)

Note:For lengths greater than 25 ft (7.6 m), refer to the Duct Free Long
Line Guide.

Unit

The following items are included with the outdoor unit:
Pipe Sizes
Refer

to table

4 for

pipe

sizes.

BODY

Table

METERED

FLOW

COOLING

38HDF018-036
A09499

Fig.

4 - Pipe

Sizes

Unit Size
18K
24K

Pipe Sizes (in)
Mix Phase - in
3/8
3/8

30K
36K

3/8
3/8

Note:Both lines need to be insulated
insulation.

Vapor 5/8
5/8

3/4
3/4

using at least 1/2 inch closed foam

5 - 38HDF018-036

Condensate
Refer

to table

Drain Pipe Sizes
5 for

the required
Table

sizes.

5 - Drain

Pipe

Sizes

BODY

Unit Size

Outside Diameter

A09500

Model

6 - 38QRF018-036

Filter Drier

38HDF

_-_

38QRF
Multiple pistons.

Piston
Cap
_-_

_-_
_-_ (qty 2)
Quantity varies with size.
Table

2 - Matched

_-_

Flare
Connector
_-_

_-_

_-_(qty 3)

Pistons*

Systems

System
Type

Nominal
Capacity
018

Outdoor
Unit
38HDFO18---3

Indoor
Unit
40QNC018024---3

Cooling
Only

024
030

38HDF024---3
38HDF030---3

40QNC018024---3
40QNC030---3

036
018

38HDF036---3/5/6
38QRF018---3

40QNC036---3
40QNQ018---3

Heat

024

Pump

030
036

38QRF024---3
38QRF030---3
38QRF036- - -3/5/6

40QNQ024---3
40QNQ030---3
40QNQ036- -3

- in

Inside Diameter

18K
24K

5/8
5/8

7/16
7/16

30K
36K

3/4
3/4

5/9
5/9

Note: Do not trap condensate

Fig.

clearances.

PiDinu Lenuths

Usage

Outdoor

space
circulation

Materials

Qty

Wall Mounting
Bracket

REQUIREMENTS

Clearances

Unit

following

SYSTEM

pipe.

Refriuerant

Charge

Control Wiring

The 38HDF and 38QRF units can be matched with multiple
outdoor units and thus additional charge might be required when
matched with the 40QNC or 40QNQ units,
Table

6 - Additional

heat pumps.

Charge

Unit Size

Additional Charge Ib (kg)
38HDF

018
024
030
036

1.2 (0.55)
1.0 (0.45)
2.4 (1.1)
0

38QRF
0.8

The

The metering device(s) for these systems is a type B Accurator
installed with the outdoor unit. One Accurator
is required for the
cooling
only system and two are required
for the heat pump

multiple indoor units, the correct Accurator
to Table 7 for the correct Accurator size.

Table 7 - Accurator
System Type

Cooling

indoor

following

unit is supplied
accessories

• Wall mounted
controlled

Cooling
Accurator

018

024
030

55
63

036
018

70
49

024
030

55
63

036

Only

Heat Pumps

the outdoor
be matched

unit.
with

must be selected.

Refer

Sizes

Size

up to 50 ft

between

50 and

control.

• Zone manager

Heating
Accurator

Operating

a wireless

remote

c@able

and

of controlling

up to 32 units divided

Range
operates

within

the @plication

guidelines

Range
Maximum

Minimum

DB°F (°C)

WB°F (°C)

DB°F (°C)

Outdoor
Unit

125 (51.7)

55 (12.8)

Indoor
Unit

90 (32.2)

74 (23.3)

62 (17.0)

Operating

WB°F (°C)
-56 (13)

Range
Maximum

DB°F

45
49
53
63

The

zones.

Operating

Heating

control.

Up to 6 units can be daisy chained

Ensure that the system
shown in Table 10.
Cooling

with

are also available

by one wired control.

to 8 different

The Accurators
are supplied
with
since the same outdoor
unit can

for any length
for lengths

the
for
on

User Interface

(0.36)

0.5 (0.23)
0
0

Device

systems.
However,

18 AWG is recommended

(15.2 m). 16 AWG is recommended
200 ft (15.2 and 61.0 m).

Note:The above additional charge is required amount for line lengths up to
25 ft (7.6 m), For line lengths exceeding 25 ft (7.6 m), additional charge will
be required. Refer to the Duct Free SpfitsLong Line Guide.
Metering

Thermostat
wires should be used for control wiring between
indoor and outdoor units.
A two conductor
cable is required
the cooling only units and a seven conductor
cable is required

(°C)

Minimum

WB°F

(°C)

DB°F

(°C)

WB°F

Outdoor
Unit

75 (23.9)

67 (19.4)

17 (-8.3)

Indoor
Unit

81 (27.2)

62 (17.0)

(°C)

Accessories
Power and
Power:
• The indoor
• Consult

Connecting
and outdoor

local building
Electric

units require
codes,

a dedicated

NEC (National

Table

power supply.

Electric

Code) or

8 for the electrical

requirements

for the outdoor

switches.
8 - 38HDF

QRF

Electrical

Requirements

38HDF

38QRF

Min Ckt Amps/
Fuse HACR Bkr
Ampe
12.1/20
16.8/25

Unit
Size

Voltage

018
024

208/230-1 - 60
208/230-1-60

030
036

208/230-1-60
208/230-1-60

18.4/30
23.8/40

036
036

208/230-3 -60
460-3 -60

18.0/30
8.3/15

Table
Unit
Size

units

size the cables and

9 - 40QNC

/ QNQ

Electrical

Requirements

40QNC

40QNQ
Min Ckt Amps/
Fuse HACR Bkr
Amps
0.48/15

018

208/230-1-60

Min Ckt Amps/
Fuse HACR Bkr
Amps
0.48/15

024
030

208/230-1-60
208/230-1-60

0.48/15
0.48/15

036

208/230-1-60

0.55/15

Voltage

list of field installed

and outdoor

units.

required
for the application
installation
instructions
for
accessories,

Code) for any special requirements.

and Table 9 for the indoor units to correctly
disconnect

An extensive
indoor

CEC (Canadian
• Use Table

Cables - Field Supplied

especially

easier if planned

ahead.

accessories

Identify

what

is available

accessories,

at hand and consult
the
the accessories.
Some

on the indoor

units,

for both

if any,

can be installed

are

separate
of the
much

INSTALLATION
Complete

Pre-installation

a. Carefully

Checks

1 Unpack
Unit - Store the indoor and outdoor units in the
original packaging
until it is moved to the final site for installation
2 Inspect

Shipment

- Upon

receipt

of shipment,

check

remove

the mounting

plate which is attached

to the back of the unit by removing any screws and
pushing at the indicated pressure points at the bottom
the unit.

the

indoor and outdoor units for damage. If there is any damage, forward
claim papers directly
to the transportation
company.
Manufacturer
curred in transit.

is not responsible

for damage

in¢

3. Inspect

Parts

Supplied

With

Units

Check

all items

against parts list (see Table 1). If any items are missing, notify your distributor
or Carrier office.
To prevent loss or
damage, leave all parts in original packages until installation.

Screw

A09048

Consider

System

1. Consult

Requirements

local building

codes

Fig. 9 - Mounting
and NEC

for special

deciding

b. The mounting
the location

of the indoor and outdoor

ensure that the piping run does not exceed
tances listed in Table 3
3 Make sure the indoor
to electrical power
4 Allow
piping,

sufficient
piping

to an @proved

INSTALL

clearances

and servicing

5. Condensate

can be directed

a. A location

before

wiring,

through

and

shown below

rain.

)

the inside

(457.2)

wall
°

rain.

))

°_o

rain.

you begin.
Note:

Numbers

in ( ) = mm
Plumb

or a heating

2. Install Mounting Plate
The factory supplied mounting

A09049

source of heat

Fig. 10 - Minimum Spacing

appliance.
conditions.

c. Install

the wall mounting

strong
plate will

look like one of

to withstand

bracket

in a location

that is

the weight of the unit.

brick, concrete

or similar material,

drill 0.2 in (5 ram) diameter holes and insert anchors
the appropriate mounting screws.

3.5"
(899.2)

enough

d. If the wall is block,

on the size of the unit.
35.4"

line

of the unit.

units near a direct

depending

horizontally

spacing

refrigerant

rain.

that can bear the weight

such as direct sunlight

be located

5" (127)

outside

c. Do not install units too close to humid

the following

dis-

unit location.

b. Do not install indoor

plate should

level on the wall. All minimum
should be maintained.

UNIT

carefully

1. Select indoor

the allowed

See Fig 3 and Fig

drain or straight

units,

units are easily accessible

for airflow,

the unit

INDOOR

Plan the installation

and outdoor

Screw Location

installa-

tion requirements
2. When

Plate

for

e. Fasten the wall hanging bracket to the wall with 4 or
more screw anchors through the holes near the outer

2.1"
(57.3)

edge of the bracket.
f. Install the wall hanging bracket flush to the wall, and
ensure the bracket does not move.
__(2.1"
53.3)

Note:

Numbersin()

....

13.8"(130.5)

Refrigerant

_'1_

A09046

Fig. 7 - 40QNC,

27.1"

QNQ018,024

Mounting

3. Drill hole in wall for interconnecting
ing

Piping

Line

for indoor

piping,

drain, and wir-

Routin_

units can be routed

as shown

in Fig. 11.

Plate

27.2"

(688.3)

I r------Q_

;
Measurements

8.4,,(213)

Jh____JJ !
in ( ) = mm

A09047
A08358A

Fig. 8 - 40QNC,
Before

mounting

bracket,

consider

Complete

QNQ030,

the 40QNC,

QNQ

how the refrigerant

the following

036 Mounting
unit
piping

when installing

Plate

on the wall

Fig. 11 - Refrigerant
mounting

Line

Routing

Rear Pioin_

will be routed.

the wall mounting

bracket:

Determine the pipe hole position using the mounting plate as a
template. Drill a 2-1/2 inch (63.5 ram) diameter hole in the wall at

point A or B as shown

in Fig. 12 or Fig. 13.

Drill the hole at a

slope so that the outside end is 1/2 inch (13 mm) lower than inside
end to ensure optimal drainage. Refer to Fig. 14.
Side

Or Bottom

Piping

35.4"

(89912)

2.1"
(57.3)

Install

the

installation

Note:

Numbersin()

....

13.8"(130.5)

A09046

Fig. 12 - 40QNC,

QNQ018,

024 Mounting

Plate

control.

Mounting

on Ground

is being

stand or ice rack where
or heavy snow occurs.

with

A09050

Plate

face

or
into

wind winds
baftle.
See

kit. Wind baftles
low

ambient

pad.
provided

subfreezing

snow

temperatures

or ice from roof does not fall directly

kit.

on Roof

AND/OR

EQUIPMENT

Failure to follow this caution
may result in personal injury
and / or equipment damage.
Be sure unit panels are securely in place prior to rigging.
Keep

the unit

upright

and lift using

a sling.

Use cardboard or padding under the sling, and spreader bars
to prevent sling damage to the unit. See Fig 16. See Fig. 2
for center of gravity
2. Mount

INDOOR

not

accessory

use a field-

prolonged

with the accessory

1. Rig the unit.
1/2 in. (13 mm)
Min.

does

accessory

with

installed,

PERSONAL
INJURY
DAMAGE
HAZARD

036 Mounting

on the roof,

4. On cooling only units, an accessory stacking kit can be used
when units are to be stacked. See installation
instructions

Mounting

QNQ030,

coil

unit on a solid level concrete

provided

Fig. 13 - 40QNC,

the

all units

3. Position unit so water
onto unit.

on the ground,

so that

provided

used

temperature

1. Mount

53.3)

unit

instructions

also be

2. If a heat pump
__(2.1"

UNIT

prevailing
winds. If this is not possible and constant
above 25 mph are expected,
use accessory
wind
should

3.5"

OUTDOOR

The outdoor units can be installed
mounted on a wall.
NOTE:

Remove the knockout in the unit and drill a 2-1/2 inch (63.5 mm)
hole where the pipe penetrates
the structure using the guides given
above.

INSTALL

OUTDOOR
A07371

Fig. 14 - Drill Hole at Slope

reference

unit on a solid concrete

from structure

4. If a heat pump

installed,

is being

stand or ice rack where
or heavy snow occurs.

4. Relocate drain connection if necessary - Determine if the
installation requires a left or a right hand drain exit and relocate the drain hose if necessary as shown in Fig. 15.

pad or platform.

3. Isolate unit and piping

prolonged

use a fieldsubfreezing

provided

snow

temperatures

5. On cooling only units, an accessory stacking kit can be used
when units are to be stacked. See installation
instructions
provided

with accessory

kit.
SLING

SLING PADDING

COMPRESSOR
END

/
Drain Cap

CENTER OF
GRAVITY
Hose

A08362

Fig. 15 - Drain
NOTE:

If the condensate

Hose and Cap Location

pump

hose can be cut to provide

accessory

is to be used,

space for the space

the drain

for the condensate

pump reservoir in the back of the unit. The reservoir must be
installed
at this time. Please refer to installation
instructions
provided

with the condensate

pump

5. Place unit on a clean surface
the piping and wiring.

accessory.
until you are ready to connect

A07396

Fig. 16 - Lifting

Unit with Sling

Mounting

38HDF []nits:

Unit on Wall

The units can also be mounted on the wall using the accessory
mounting kit.

Complete
tions

Outdoor

Refrigerant

1. Assemble the connector tube to the factory supplied filter
drier by:
a. Braze the field supplied connector to the inlet of the
filter drier (see Fig. 17)
b. Braze the factory supplied flare connector to the outlet
end of the filter drier (see Fig.17)

Piping Connec-

Follow the following general guidelines:
1. Use refrigerant grade field - supplied tubing.
Refer to Table 4 for the correct line sizes.

COOLING

2. Do not use less than 10 ft (93.05 m) of interconnecting
tubing.

[]NIT

DAMAGE

-PISTON

HAZARD
A09499

Failure to follow this caution may result in equipment
damage or improper operation.

Fig. 17 - 38HDF018-036

If any section of pipe is buried, there nmst be a 6 in. (152.4
ram) vertical rise to the valve connections on the outdoor
unit. If more than the recommended length is buried,
refrigerant may nfigrate to cooler, buried section during
extended periods of system shutdown. This causes
refrigerant slugging and could possibly damage the
compressor at start-up.

2, Assemble
factory

Connector

the Accurator
supplied

body

_ _{___
CAP
NOTE: Arrow on AccuRater
indoor coil.

COIL

(bypass type) Metering Device
Components

4, Braze the completed
liquid service valve.

DAMAGE

Failure to follow this caution may result in equipment damage
or improper operation.
To prevent damage to unit or service valves
following:
• A brazing shield MUST be used.

5, Connect

observe

• Wrap service valves with wet cloth or use a heat sink
material.

the

filter

the field supplied

assembly

drier/Accurator

to the flare connecassembly

to the

line set to the filter drier/Accura-

tor assembly and the suction valve. A sweat connection
is
required at the suction valve and flare connection
is required
for the nfixed phase
6. Insulate

any exposed

quid valve.

HAZARD

BODY

A09501

Fig. 18 - AccuRater

6. When passing refrigerant tubes through the wall, seal the
opening so rain and insects do not enter the structure. Leave
some slack in refrigerant tubes between structure and outdoor unit to absorb vibration.

[]NIT

body points in free flow direction, away from the

3, Attach the complete Accurator
tion end of the filter drier

Unit

TO INDOOR

5. Suspend refrigerant tubes to avoid damage to insulation or
tubes so they do not transnfit vibration to the structure.

at Outdoor

(see Fig, 18) using the correct

PISTON
WITH ORIFICE

4. Run the refrigerant tubes as directly as possible and avoid
unnecessary turns and bends.

NOTE: A fusible plug is located in unit suction line; do not cap
this plug. If local codes require additional safety devices, install as
directed.

3klbe Assembly

piston (refer to Table 7),

TEFLON SEAL
\
_

When more than 80 ft (24.4 m) of interconnecting tubing is used,
consult the Duct-Free Split System Long Line Application Guide
for required accessories.
3. Insulate both lines. A minimum of 1/2 inch foam pipe insulation is recommended.

Connection

BODY

line,
areas between

the line set and the li-

38QRF

Units

1. Assemble the connector tubes to the factory supplied filter
drier by brazing the factory supplied flare connectors
to the
inlet and outlet

for the filter drier (see Fig. 19)

UNIT

DAMAGE

HAZARD

Failure to follow this caution
or improper operation.

BODY

--_Eo_BB,
METERED

METEREDFLOW

A09507

2. Perform

Connector

Tube Assembly

step 2 and 3 from the 38HDF

cap supplied

with

section.

the outdoor

Unit failure as a result of operation on improper line voltage or
excessive
phase imbalance
constitutes
abuse and may cause
damage to electrical components.
Such operation
could void
any applicable Carrier warranty.

ELECTRICAL

SHOCK

Failure
death.

this warning

unit as shown

Power

A07407

The Teflon

liquid service

valve.

seal on the piston

type)

should

have to be adjusted for long line applications
Refer to the Duct Free Long Line Application
information.

from

main box

point

supplied

wires through

towards

(over 80 ft / 24.4 m).
Guide for additional

Complete

Outdoor

Power

filter drier

and Control

SINGLE-PHASE

F"'3

=GROUND

LEAD

drier

__GROUNDING
BLK

]

SHOCK

Failure
death.

this warning

SINGLE-PHASE

U_IT

and liquid

Wiring

,._..--

BLK

=_-..-

BLU

YEL

THREE-PHASE
CONN TO
DISCONNECT
PER NEC

LEAD

GROUNDING

LUG

HAZARD
THREE-PHASE

to follow

LUG

as-

=GROUND

ELECTRICAL

connection

in junction box
wiring must be

to the piston

set to the filter

areas between

the conduit

grounded.

the

[

any exposed

per NEC

piston might

cap (see Fig. 20).

6. Insulate
valve.

Provisions

to disconnect

opening in the unit side panel and connect
as shown in Fig 21. The unit and power

the flare end of the filter drier assembly

5. Connect
the field supplied line
sembly and to the suction valve.

label.

but out of reach of children.

4. Route the field power

PER NEC

4. Attach

warning

unit
has

3. Run power wiring from the disconnect
switch to outdoor
unit. Use only nfinimum 60°C copper conductors
between
the disconnect
switch and the unit for field power connection.

Components

The size of the factory

accessible,

2. Run power wiring
and local codes.

HEATING

NOTE:

be sure indoor
indoor blower

for locking the disconnect
switch on the OFF (open) position is advisable. The disconnect
switch must comply with
NEC and local codes. Protect the unit and wiring using only
the recommended
fuse/circuit breaker size. See Table 10..

METERED FLOW

Device

injury or

Wiring

readily

TOR

Metering

result in personal

Lock out and tag switch with a suitable

_ cFoLNANR_cPISTON
CAP

(bypass

could

1. Mount outdoor power disconnect.
The unit is factory wired
for the voltage shown on the unit nameplate. The fused disconnect switch nmst be provided within sight of the unit,

--PISTON
HEAT IN6

Fig. 20 - AccuRater

to follow

HAZARD

Before performing
service or maintenance,
main power switch is turned OFF and
stopped.

3. Remove the plastic cap from the liquid and suction service
valve on the 38QRF unit and assemble the heating piston
and piston
Fig. 20.

damage

HEATING

Fig. 19 - 38QRF018-036

may result in equipment

could result in personal

iniury

LEGEND
NEC -- National
Electrical
----

The unit cabinet must have an uninterrupted
or unbroken
ground to minimize personal iniury if an electrical fault should
occur. The ground may consist of electrical
wire or metal
conduit when installed in accordance
with existing electrical
codes.

Splice

UNIT

Code

(field)

, Field Wiring
Factory Widng

A08251

Fig. 21 - Line
NOTE:
and could

Operating
affect

where voltage

Power

unit on improper
Carrier

warranty.

may fluctuate

above

Connections
line voltage

Do not install
or below

constitutes

abuse

unit in a system

permissible

limits.

Control

Wiring
2, Route one end of the control wiring through the opening
provided in the unit side panel and connect to the control
terminal strip using either Fig. 21 for 38HDF units and Fig.
22 for 38QRF units,

The control circuit is 24 volts AC (naininmm 40VA) supplied from
the indoor unit,
1. Make sure you have enough control wires to cover the distance between the indoor and outdoor unit,
Indoor
Terminal
Board

Indoor_
Board

Indoor _

_4v

Board
COHPR

Terminal
Board

T
°v2°;
Outdoor

Board

I_ I

...... _o i41_it

Terminal

_o _il

Board

.............
_o _LL

_
o
r_

A09509
A09508

Fig. 22 - 38HDF
NOTE:

Use No. 18 AWG

100 ft. (30.5 m), as measured

Control

color-coded,

Terminal

Strip

insulated

along the control

Fig. 23 - 38QRF

(35°C

voltage

mininmn_)

wires,

wire. If the distance

use No. 16 AWG

between

color-coded

Control

the indoor

Terminal

and outdoor

wire to avoid excessive

Strip

unit is greater than

voltage

drop.

Table
38HDF

10 - 38HDF

VOLTAGE RANGE*

38QRF

/ 38QRF

Electrical

COMPRESSOR

Data
OUTDOOR FANMOTOR

RLA

LRA

FLA

NEC Hp

kW Out

MIN CKT
AMPS

V-PH-Hz

UNIT
SIZE

Min

Max

FUSE/
HACR
BKR
AMPS

018

208/230-1-60

187

253

9.0

48.0

0.80

0.125

0.09

12.1

024

208/230-1-60

187

253

12.8

58.3

0.80

0.125

0.09

16.8

030

208/230-1-60

187

253

14.1

73.0

1.50

0.25

0.19

18.4

208/230-1-60

187

253

16.7

79.0

1.50

0.25

0.19

22.3

187

253

10.4

79.0

1.50

0.25

0.19

14.5

414

506

5.8

79.0

0.80

0.25

0.19

8.7

208/230-1-60

187

253

17.9

112.0

1.45

0.25

0.19

23.8

208/230 -3 -60

187

253

13.2

88.0

1.45

0.25

0.19

18.0

460 -3 -60

414

506

6.0

44.0

0.80

0.25

0.19

8.3

035

208/230-3

-60

460 -3 -60

036

Table

11 - 40QNC,

QNQ

Fan

Coil

Electrical

VOLTAGE RANGE*
UNIT SIZE

V-PH-Hz

Min

Max

40QNC01824

208/230-1-60

187

40QNC030

208/230-1-60

187

40QNC036

208/230-1-60

40QNQ018

Data

FAN

POWER

FLA

Motor Power
(Watts)

MIN CKT
AMPS

FUSE/CKT
BKR AMPS

253

0.38

0.48

253

0.38

0.48

187

253

0.44

0.55

208/230-1-60

187

253

0.38

0.48

40QNQ024

208/230-1-60

187

253

0.38

0.48

40QNQ030

208/230-1-60

187

253

0.38

0.48

40QNQ036

208/230-1-60

187

253

0.44

0.55

LEGEND:
FLA -

Full Load Amps

Determine

LRA NEC-

Locked Rotor Amps
National Electrical Code

(AB) 457-452

= 5v

(BC) 464-457

= 7v

RLA -

Rated Load Amps (compressor)

(AC) 457-455
= 2v
Maximum deviation is 7v.

* Permissible
satisfactorily
NOTES:

limits of the voltage

range at which the unit will operate

Determine

1. Control
source.

circuit is 24-V
on all units and requires external power
Copper wire must be used from service disconnect to unit.

2. All motors/compressors

contain internal overload

percentage

% of voltage

protection.

deviation from average voltage:

imbalance

of voltage imbalance
7
= 100 x 5-7= 1.53%

3. In compliance with NEC (USA Standard) requirements for multimotot and combination load equipment (refer to NEC Articles 430 and
440), the over current protective device for the unit shall be fuse.

This amount of phase imbalance
allowable of 2%.

4. Motor RLA values are established in accordance with
writers' Laboratories) Standard 465 (USA Standard).

UL (Under-

IMPORTANT: Contact your local electric utility company
supply voltage phase imbalance is more than 2%.

5. 38QRF018-030

voltage.

units are only available

in single-phase

6. Unbalanced 3-Phase
Supply Voltage
Never operate a motor where a phase imbalance in supply voltage is
greater than 2%. Use the following formula to determine the percentage of voltage imbalance:
= 100 X
EXAMPLE:
A

maximum

max voltaqe

deviation from averaqe
average

voltaqe

cQ0s

Supply voltage is 460-3-60
C

AB = 452v
AC = 455v
Average Voltage

M_OTO_j_R

BC = 464v

=
=

452 + 464 + 455
3
1371
3

457

is satisfactory

as it is below the maximum

immediately

if the

THERMISTOR

EQUIVALENCE

TENPERATURE
+F

o
m_s

6,500

]7_40©

32_500

ALL THERMISTORS ARE IDENTICAL

' I r, 14q, l.lol
I

RESISTANCE

N0 T E

Ic:

IF 4N_ OF THE )RIHN_L
_]RE FURNIgHED
MUST BE REPLACED, IT MUST BE REPLACE{)
_,'ITH TYPE 90°C ,_IRE OR ITS EOdlVALENT.

2. ',_II_E IN ACCOPDANCE WITH N_TIOI'_L
ELECTRICAL CODE (N.E.C.}
AI,_[} LOCAL CODES.
3.

COMPRESSOR AND FAN MOTORS _RE PROTECTED B"
INTERNAL THERmaL OVERLO_DS.

COMH
fEL

4. T_ANSFORMER H45 I_TER_AL
THE P_IH:RY SIDE.

YEL

'ODULAR
CO qTROL

(}O!

2A THERH_L FUSE ON

,10

",A"
PCB

TB3

0 '_N/YEL

FAN
I

I-TO UNIT

LEGEND

E{_'L [ P.

TERMINAL

(MARKED)

TERMINAL

(UNMARKE(}}

BLOCK

FACTORY
FIELD

WIRING
CONTROL

OPTIONAL

XX}N;E(T

(ilt,
( ONTAETOR
C;PaC
I TCR
CO_ > COPIRES 0i_
FC
FAN CAPACITOR
EOUIP.6ND.
EOUIPME_T 6ROUN:̧}
HPS
HIGH PRESSURE S_ITCH
IDFH INDOOR FAN MOTOR
LLPS
LIOUli) LOW P_E_SUi_E S_JITCH
OF_
CUTbOOR FAN _40TCR
OFR
OUTDOOR FAN RELAY
OL
OVERLO_'D
IPCB
t4_IN COI'_TROLPRINTED
CIRCUIT BOARD

SPLICE
TERHIN_L

)[

( ND

WIRING

_T
.....TEST'.................
TP
P(I I I,_T
TRA_

TRANSFORMER

4/. _1\. 01

H I OH_,,£LL

38HDF OUTDOOR CONDENSER

EOUIP _D_

_s i

}_, s.,._iE:0::_

8LK

¢]_

3LK

208/2301,
7PH

:,LK

-2

TO
OUTDOOR
,_IT
D 15CONNECT

RED

E_
EZ3

_BLK
OFR

BLU

......../

TO H ](JH ,_ALL

RED

TO H]t;H,,:LL

...... /

EB]
TRSN

T_£
A08367

Fig. 24 - 40QNC01824

Matched

with 38HDF

Typical

Wiring

Schematic

THEAt[ST(}R

EOk, Ii'_LENCE

TEHPERATURE

] 1

400

1_2

SO0

THERH[STO:_S

NOTES

IF _ Y OF THE O [OI[_L
U_T BE REPLACE[}, IT M
_,ITH T/'>E 90
_d[ E

/-RE

IDENT[CSL

_dlqE FURSlSHEB
T 3E EPLA(E
IT
E(LIV;LENT.

2. dIRE IN A(LORD_N(E WITH N_TI _L
ELE{TRI 5L 'O(E
N.E..
AN} LO 5L

Iq'lddil'l bI12

O)E .

OblP E q(R AN} FAN IflOT(R -tRE PR'_TE'TE
BY ]qTERN,_L THERq_L D'/E_LOA}8.
4.

YEL

NCE

°("

aLL

[ r

RES[STS,

YEL

TRA F(}_HE_ HAS I TE! AL A THE_L
FJSE (}b
THE I'RII' AqY II}E.
COMPRESSOR(IANCKCASE HEATEr [NST&LLE)
ON S380NFO X_.

NODULSR
CONTROL

OUTCOOi!FAIEFdST

T_;3

"A"
]PCB

_GRN/YEL

CONTACTOR
_,p
CAPACITOR
CH
C ,'_ KC_'SE HE,_TER
CO_4P COHPRESEOR
CHS
C_A_KC_SE HEATER S_;ITCH
OFT
DEFROST THERMOSTAT
FC
FAN CAPACITOR
EOtJIP.CNI_. EOUIHtENT 6ROUND
HPS
HICH _RE_SURE S_ITCH
IOFM INDO01_FAt_ _OTOR
LLPS LIOUID LO_ PRESSURE S_;ITCH
OA5
OUTDOOR AIR SENSOR
OFH
ObTDODR F,_N _OTOR
OFR
OUTDOOR FA_ RELAY
OL
O?E_LO'_D
IPC8
It_I_x CONTROL
PRINTED CIRCUIT BO4R8

=
_G_N'_L

LU_

I
__

BARE ZOF>_ER
T
NIT
]q O_l ECT
EOUIP.

LEGEND
(Z}
0

GND

TERMINAL (HARKED}
TERMINAL (UNMARKED}
_PLICE

TERNIN_L 8LOCK
FACTORY _IRING
FIELD CONTROL WIRIN6

i!73 LOU'_ER
.....
......
STEPPER HOTOR
TP
TR_

TEST POI T
Tbq SFOR E_

4..uN_¢,;
..........
380RF

8 32d

H I OHm,,',
£ LL

OUTDOOF< CONDEN%ER

Optional on 38QRF018/024
"

Models

s K

P08/20Y/[>H

CIIC

L "'"(::_'

NE;T

BLKRED

,/-_,_

_
OFR

BLK

[_3

TO H[OH',dALL

_.J

TO H[GHW;LL

TO H[(H,_,LL

0_9

_'_'_F[

BLU
,,/>4K

..........
TO H[{_HidALL

..............TO H[CHWALL

TO H[GHW_LL

TO H[OH',dALL

8LK

TRAN

mT_

A08368

Fig. 25 - 40QNQ018,024

Matched

with 38QRF

Typical

Wiring

Schematic

THEAI[

}TOA

E©U I /ALE[

TEHPEASTURE
*_F

°(

]

}

,72

RES [ ST AqCE
l]
}S

[

400

ALL THERN]

3:;'
TOR

SO0

ARE IDENTICAL

} I IF Nt OF THE O I,%IflAL w[ E FBRNI HED
HU'T BE _E LACE, IT PUT BE E>L_'CEO
WITH TYPE 90'C WIRE OR IT q E UI,ALE T.
21 WIRE I A( 'RD,_ (E :,IITH NATIONAL
ELEGT ]C#L (O}E k.E.(.
} AI,_BL(_L
3,

OBEB.

COI'I*>_EBO_ #NO FAN 40TO_ #BE '_OTECTE
PY [ TERNSL THEB AL OVEBLOH
TO
T

3LK

IT
B i9(U ONNECT
J

_
OFR

[3S3
E3

E_
E_
BLU
W/RNK

HIGHWALL

......./I

HIGHWALL

[i3
TR_N

T_
A08369

Fig. 26 - 40QNC030,

036 Matched

with 38HDF

Typical

Wiring

Schematic

THEG ,I :TO:_

EOL I VALENCE

TE PERATL RE
°F

'_C

AES I STANCE
s
6,500
] I, 400
32

500

ALL THERMISTORk ARE IDENTICAL

N<3TEc

2. 4IRE IN aCCOR MCE ,_ITH hATIOKAL
ELE(TRICAL CO)E (N. E.C. ) AND LO(AL C0¢E5.
3. COHPRESSOR AND FAN MOTOR5 ARE PROTECTED
8Y INTERNAL THERnAL OVEALOADS.

]OC

4. THETRANSFORMERPR[MaRY
<[nHASE.
_ .INTERNAL 2A THERMAL FUSE ON
5.

YEL

COHPRESSORCRANCKCASEHEATER INSTALLED
ON 538QNF030.

YEL

_LK _q
4
3

REb
ORN

_'HT

Z'4

f!ODUL '-',A "D"
CONTROL IPCB

TP
TR_N

LO ,,ER 5TEI' E
TEST POINT
TRa\SFO_MER

ss"

TB3

DL_

CONTACTOR
"_)
C4>A{ ITCR
_t
C[/a!\KCt, E HEATER
CO_P COMPRESSOR
CHS
CR_NLCAgE HEATER SWITCH
DFT
bEFROgT THERMOSTAT
FC
FAN CAPACITOI_
EOU[P.(_Nb.
EOUII'_'!ENT GROUNI)
HP_
HIGH PRE55U_E 5WITCH
II}F_
]_I}OOR FAN MOTOR
LLPS L]OdI8 LOW PRESSURE 5WITCH
OA5
ObTOOORair SENSOR
OFM
OUTDOORFAN HOTOR
OFR
OUTDOORFAN REL_
OL
OVERLOAD
IPCB _AIN CONTROL
PRINTED CIAC{_[T BOARD

OD FeN
RV5
....................... OUTD_EROST

I/0

[()SAD

[N[}OOA

FaN
TO :NIT
EQUIP.

_'LK

TERMINAL

TERMINAL (UNM_AKEg}
SPLICE

TEAMINbL 8LOCK
FACTORY w1 ?INS

FIEL

COT?L

FIEL
A E

POWERWIRINS
'RY {R

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

OqO

M_AKE }

@
0

HOTOR

8LU

D[SCONIECT"

'\_ORN

WIRIN

4()(NC030

.....

038

HIOH>:ALL

.......
%,Y uuTDOOA tu u_
_pptional

on 38QRFO036 Models
Standard on 38QRF030

[

h
I _ILK+eLK_'_:_

__-L

N(TE

EOUIP N)_

_.?.

,.....

?,_}Hr,

BLF

20 /230V
] [>H
, EE NOTE #)

'
BLK

[

TO R
)JTD}
1 }JNIT
I'NE:T

/
{Z]

_BLK
OFA

....

TO H[GHW,L,LL

TO HIGH*ALL

TO H[GHWaLL

H[(HW_LL

(

HIGHbaLL

OAS

)FT

BLU
M/PNK

............. TO H[GHWALL
TO H[GH_ALL

/
0

SLK

TAAN

A08370

Fig. 27 - 40QNQ030,

036 Matched

with 38QRF

Typical

Wiring

Schematic

Run Power

Wiring

for Indoor Unit

Be sure field wiring complies with local building codes
and unit voltage is within limits shown in Table 11.
Contact
voltage.

local

power

company

for correction

and NEC,

of improper

Install All Power_ Interconnecting
Drain Hose to Indoor Unit.

Wiring_ Piping and

1. Run control wiring from the outdoor unit through the access
hole in the wall and make sure you have enough wire to
reach the control box of the unit once hung on the mounting

line

plate.
2. It is a recommended
outside
ELECTRICALSHOCK
Failure to follow
or death.

HAZARD

this warning

If an extension

could result in personal

that flare connections

of the wall where the indoor
pipe

is required

is located

on the

unit is to be mounted.

to facilitate

this location,

measure, fabricate and install the extension pipes to the indoor unit before hanging the unit on the mounting bracket.

injury

3. If piping

Before
installing,
modifying,
or servicing
system,
main
electrical
disconnect
switch must be in the OFF position.
There nmy be more than 1 disconnect
switch. Lock out and
tag switch with a suitable warning label.

connections

are on the outside

wall, pass the pipes

(refrigerant
and drain) through
the wall sleeve and then
hook the indoor unit body on top of the wall hanging bracket. Support the unit away from the bottom using a tool or a
piece of wood.
NOTE:
electrical
bottom

[]NIT

DAMAGE

Tie together
connection
as shown

the refrigerant piping, the drain hose, and the
wires and ensure that the drain hose is at the

in Fig. 28.

HAZARD

Failure to follow this caution
or improper operation.

may result in equipment

damage

Use copper

wire only between

NOTE:

Install branch circuit

disconnect

per NEC.

switch(es)

of adequate

size to handle

current

and readily
Some codes

accessible
from, unit, per section 440-14
of NEC.
allow indoor unit to share disconnect
with outdoor
can be locked;

The 40QNC/QNQ

units require

within

local code before

sight

of,

installing

A08364

Fig. 28 - Location

1. Locate the indoor power
2. Locate
codes.

check

disconnect

and

unit starting

unit if disconnect
in this manner.

Locate

disconnect

(i) Indoor unit piping
@ Connection
w_dng
@ Drain hose

and install

3. Run power
4. Run power
area.

supply
wiring

their own power

wiring
from

4. If required
switch

to disconnect
disconnect

Hose,

and Wiring

supply.

disconnect

of Piping,

per NEC

and local

wiring through the back side
box area. If the wired remote

or zone manger accessory are to be used, perform any modifications required at this time. Refer to the Accessory install-

switch.
switch

make the flare connections.

5. Route the power and control
of the unit and to the control

to wall mount

ation instructions).
6. Remove

5. If any accessories
are being installed, refer to the individual
accessory instructions
for guidance on wire routing at this
time.

the control

box

cover

and finish

all indoor

unit

wiring connections
as shown on the wiring diagram or in
the accessory installation
instructions.
Replace the control
box cover.
7. Fix the bottom

part of the unit to the wall mounting

bracket

and push it carefully until the two bracket hooks fit into the
marked places at the base of the unit until it snaps into
place. See Fig. 29.

USER
UNIT SIZE
40QNC01824

INTERFACE

The

indoor

unit
two

(an Owner's
Manual is supplied with the unit). If you have
units installed in the same space and they need to work

unit includes

a wireless

independently,
the remote
configured
as follow:

40QNC030
40QN0036
40QNQ018

controls

and

control

the

to operate

units

need

the

to be

Unit Configuration

40QNQ024
40QNQ030
Wall
Hanging
Bracket

remote

40QNQ036

Turn

Hook

the unit off by pressing

the IQL). Press

and hold the M

and

than 5 seconds.

The

Hole

=_/_/IIbuttons
display

Retainer
Clip

configuration
segments will
(ab=control
default
transmit
A08365

Fig. 29 - Wall Mounting
8. If the refrigerant

piping

connections

Details
are located

of the remote

will be cleared

control

for more

and the time segments

item (rAdr=remote
display the default
of both

indoor

will display

address)
and the temperature
value of this configuration
item

units).

Press A

and V

leave the configuration

to the unit. Press

the

//I button

the I_

button

to
to

menu.

Remote Control Configuration
outside

the

wall, tighten the flare connections
as shown in Fig. 30. Insulate all exposed refrigerant lines and secure to the wall and
fill any void spaces in the hole.

Turn the unit off by pressing
and

buttons

for more

the IQL) button.
than

Press and hold the

5 seconds.

The

display

will be

cleared and the time segments will display the first configuration
item (CH=remote
address)
and the temperature
segments
will
display the default value of this configuration
both indoor units).
Press A and V to change

or (b). Press the :'/_
unit. Press the I_

@ Adjustable wrench or torque wrench
@ Outdoor end
@ Indoor end

the default

button
button

to transmit

item (Ab=control

Connections

A wall mounted control
unit or multiple units.

value to the new value

of (a)

the new configuration

to the

to leave the configuration

menu.

NOTE:
When 30 seconds have elapsed and no buttons
pressed,
the
remote
control
will
automatically
configuration
menu and resume its normal operation.
A07201

Fig. 30 - Tightening

to change

value to the new value of (a) or (b). Press the
the new configuration

the first

or zone manager

have been
exit
the

can be used to control

Wired Control
If a wall mounted wired control is required the following
steps
should be performed
at the same time the indoor control and power
wiring

are being connected:

1. Unplug

the connector

2. Remove

on J5.

the wire harness

from the wired

3. Plug one end of the wire harness
the board
4. Route

into

the other end of the wire harness

unit along the low voltage

control

box

the J5 connector
to the back

of the

wiring

5. Connect the other end of the wire harness to the field supplied wiring between the indoor unit and the wired control
as shown
31.

in wired

control

installation

instructions

and Fig.

I ....

Fbd

......

Lo.°

----Ti_) 5 pins

hdoor unit
Room Controller
0 Main electronic card
@ 4 pins terminal Mock placed on e_emal
0 Wires supplied by the installer
_) Terminal block in the Room _ntro_er

control box

A09512

Fig. 31 - Control

Wiring

Between

Up to six units can be daisy-chained

UNIT1

UNIT

Indoor

and controlled

and Outdoor

Units

from one wired

UNIT

control.

3 ---

UP TO 6 UNITS

1
_J5

Js
(Z)

(1)

(!)

(9
A

- MAIN BOARD

" WIRING

" BLAC_

KIT

33MC9005

(T) - RED
C)

" WHITE

* 100ohm Resistor

WIRED CONTROLLER

A09513

Fig. 32 - Multiple

Unit

Control

Wiring

Zone Manager
If a Zone

Manager

is required,

the following

performed
at the same time the indoor
are being connected:
1. Plug the communication
2. Connect
Manager

board

control

should

3. Route the other end of the wire harness
control to the back of the unit.

wiring

4. Connect
to the J8 as shown in Fig. 33

one end of the wire harness
to the communication

steps

and power

supplied

the other

plied wiring

along

end of the wire harness

that will be connected

the voltage

to the field sup-

to the zone manager

shown in Fig. 33. (Shielded cables are required.
Zone Manager Installation
Instructions
for further

with the Zone

board.

Refer to
informa-

tion.)

,,__.,

®
/.,

GREY
(_

BLUE

[

T---

@._CB

12v

-4 II
1.'

I
[

[1 [ I I !,,,,,]
I®
I"-

®
m

O
(_)
(_)
@
(_)
(_
O

Main board
Communication
board (supplied with the kit)
5*cable wiring (supplied wilh the kit)
Auxiliary terminal block (supplied with the kit)
Wiring by the installer
Zone Manager terminal block (mounted on the Zone Manager)
Indoor unit

A09514

Fig. 33 - Wiring

for Zone

Manager

START-UP
Preliminary

Manifold Gage

Checks

1. Check condensate
drainage system; on the opposite
the drain connection,
insert a water bottle up into

side of
the fan
500 microns
Low side valve

coil unit and fill the drain pan. Water must flow steadily; if
not, check the pipe slope or inspect for any pipe restrictions.
2. Make
tight.

sure all wiring

3. Field electrical
plate rating.

connections

power

source

are correct

must

agree

High side

and they are

with

unit

__{(('_
_,v --_

Charge

valve

hose-_
/

name

Charge

hose
Vacuum

pump

4. Check that all barriers, covers, and panels are in place. Ensure that the filters and return-air
grilles on the indoor unit
have been installed
tioned correctly.
5. All service

valves

and that the discharge

louvers

are posi-

\
Low side valve

must be closed.
A07361

6. On units with crankcase
are tight around

Evacuate

heaters,

ensure

belly-band

heaters

Fig. 35 - Manifold

the compressor.

and Dehydrate

the System

Deep

Vacuum

Method

The deep vacuum method
requires a vacuum
pump capable
pulling a vacuum of 500 microns and a vacuum gage capable

UNIT DAMAGE
Failure

to follow

or improper

accurately measuring
is the most )ositive

HAZARD
this caution

may result in equipment

damage

liquid

water.

of
of

this vacuum depth. The deep vacuum method
way of assuring a system is free of air and

See Fig. 36)

operation.

Never use the system
Using Vacuum

tighten

gage charge
2. Connect

as a vacuum

pump.

Pump

1. Completely
valve.

compressor

hose

flare nuts A, B, C, D, connect
to a charge

manifold

port of the low side service

(See Fig. 34.)
charge

hose to vacuum

pump.

3. Fully open the low side of manifold
4. Start vacuum
5. Evacuate
method.

gage.

,VACUUM TIGHT
TOO WET

(See Fig. 35)

TIGHT
DRY SYSTEM

pump

using

either

deep

vacuum

or triple

evacuation
1

6. After evacuation
is complete,
fully close the low
manifold gage and stop operation of vacuum pump.
7. The factory

charge contained

in the outdoor

side of

8. Disconnect
charge
side service valve.

hose from charge

9. Fully open service

valves

tighten

Outdoor Unit

valves.

Refrigerant

Indoor Unit

Low Side
High Side

Service

of the low

B and A.

caps of service

Valve
A07360

Fig. 34 - Service

3
4
MINUTES

7
A95424

unit is good for

connection

Fig. 36 - Deep Vacuum

up to 25 ft. (8 m) of line length. For refrigerant lines longer
than 25 ft (8 m), add 0.3 oz. per foot of extra piping up to
the maximum
allowable length.

10. Securely

LEAK IN
SYSTEM

Z
O
ft.
O
m

Valve

Graph

Triple

Evacuation

Method

Set Unit in Test Mode

The triple evacuation
method should only be used when vacuum
pump is only capable of pumping
down to 28 in. of mercury
vacuum and system does not contain any liquid water.
Refer to Fig. 37 and proceed

as follows:

Turn power
the A
The

and the =_/_/IIbuttons

remote

control

display

the

transmit

the service

2. Close

completed

service valves

and shut off vacuum

a nitrogen

cylinder

open until system pressure
4. Close

pump.

and regulator

to system

and

is 2 psig.

service valve and allow system

to stand for 1 hr. Dur-

ing this time, dry nitrogen will be able to diffuse
the system absorbing moisture.

throughout

5. Repeat this procedure
as indicated in Fig. 37. System
then be free of any contaminants
and water vapor.

will

IEVACUATE
I

Srcl=service

test

press the _

button

pressed,

the remote

is a hidden

have been

exit the test menu

test mode

that is initiated

through

test mode,

the service

test mode

message

in the temperature

Mode

Sequence

will be

are off.

icons

until the

the only button
button

to send a

times out after 30 minutes

and the

of Operation

Once unit is in TEST MODE, all remote control messages
ignored
except for a message to turn the unit OFF. Buzzer

I RELEASE
CHARGE
.TOSYSTEq

-FAN-MODE"

in service

Test

test has

Using Wired Control

service

Service Test mode automatically
remote will operate normally.

IEvAcUATE
I

the

and no buttons

To cancel Service Test mode, press the "DOWN"
normal message with "OFF" mode.

r- srq

I CHECK
TIGHT,
SYSTEM
(IF IT FOR
HOLDS
DEEPDRY
VACUUM)

5"//_ button

After

will automatically

During Service Test mode, all the icons
that is active is the "DOWN"
button.

IBREAK VACUUM WITH DRY NITROGEN I

will

to leave the test menu.

sent and "Sr" will be displayed
"DOWN"
button is pressed.

IEvAcUATE
I

the

segment

combination
of button presses
when the remote is off.
The
following
combination
must be pressed within a 6 second period:

Once

r- -srq

time

unit.

Press

for 5 seconds.

operation.

Set Unit in Test Mode
There

control.

control

Press

to the

have elapsed

control

its normal

in remote

and the

mode.

signal

When 30 seconds

"DOWN-FAN-UP

I BREAK VACUUM WITH DRY NITROGEN I

be cleared

NOTE:

and resume

Control

on the remote

will

1. Pump system down to 28 in. of mercury and allow pump to
continue operating for an additional 15 minutes.

3. Connect

Using Wireless

on to the unit. Insert batteries

are
will

beep twice.
When

in TEST

MODE,

the unit will operate

as follows:

A95425

Fig. 37 - Triple

Evacuation

1. The unit Status (Green)
blink every 2 seconds

Method

and Timer

(Yellow)

LEDs

will

To Start the Unit:
1. If the outdoor unit is equipped with a crankcase heater, turn
on the indoor and outdoor disconnect
switches to supply
power

the system

12 hours before

starting

the system.

2. Release charge into the system by opening
liquid and suction line service valves.
3. Set the wireless
low ambient
4. Refer

remote

temperature.

to Table

control

or wired

Operate

6 to determine

(back-seating)
GREEN

remote

control

A09594

the unit for 15 minutes.
if additional

charge

Fig. 38 - LED Display

is re-

2. Indoor fan will operate

quired. Also, if you have a long line application,
refer to the
Duct Free Long Line Application
Guide to determine the
additional
5. Calculate

charge

that is required

the total additional

beyond

and weigh

6. Charge should be added as liquid (not gas) slowly
fully to low side to avoid liquid slugging.
7. Start unit with operation
in cooling and heating
demand or not.

test. In test mode
(on heat pumps)

Auto fan is selected,
3. Cooling

25 ft (7.6 m).

charge required

in.

b. Louver

and care-

according

speed. If

speed

in cool mode with demand

will operate

according

tion or in cool position
4. Heat pump

to user - selected

if louvers

posi-

are set to Auto

system

a. Unit will run in cooling
minutes

if there is

to user - selected

the fan will run in High

only system

a. Unit will operate

the unit will run

regardless

YELLOW

be-

mode with demand

b. Unit will run in heat pump

for 3

mode with demand

for 2

minutes or until indoor coil temperature
is greater than
104°F (40°C). If coil temperature
reaches 104°F
(40 ° C), the unit will run in cool mode until test mode is
exited.
c. Louver will operate according to user - selected position or in cool/heat position if louvers are set to Auto.
5. Following

will cancel

a. Unit is turned
b. Power

is cycled during

c. 30 minutes
d. Fail Mode

Test Mode:

off by controller

elapsed

Test Mode

SERVICE

ELECTRICALSHOCK

Refrigerant

PERSONAL
INJURY
DAMAGE
HAZARD

HAZARD

Failure to follow this warning could result in personal
iniury or death.

The system

may be pumped

1, Attach

pressure

2, Front-seat

[]NIT

All
down

losing complete

DAMAGE

in order to make repairs
refrigerant

gage to suction

the mixed

service

on the

charge,
valve gage port,

units

are

shipped

not

with

the

refrigerant

charge

listed

nameplate,
NOTE:
atmosphere,
practices.

phase line valve,

HAZARD

Failure to follow this caution may result in equipment damage
or improper operation.
The unit coils hold only the factory-designated
amount of
refrigerant. Additional refrigerant may cause units to relieve
pressure through the compressor internal pressure relief valve
(indicated by a sudden rise of suction pressure) before suction
pressure reaches 20 psig. If this occurs, shut off unit
immediately then front-seat the suction valve and remove and
recover excess refrigerant following accepted practices.
3. Start unit and run until suction pressure reaches 5 psig.
4. Shut unit off and front-seat suction valve.
5. Depressurize low side of unit and recover refrigerant following accepted practices.
Filter Drier
Whenever the filter drier is exposed to the atmosphere it must be
replaced. Only use factory specified liquid-line filter driers with
rated working pressures less than 600 psig.
NOTE:
line.

EQUIPMENT

Wear safety glasses and gloves when handling
refrigerant. Do not overcharge system - this can cause
compressor flooding.

Procedure

low side without

AND/OR

Failure to follow this warning could result in personal
iniury and/or equipment damage.

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.
Pump-down

Charging

Do not install a suction-line filter drier in the mixed phase

Remove

vent

depressurize

and recover

refrigerant

unit

refrigerant

following

accepted

TROUBLESHOOTING
See

Table

Fault
Once

12 and

Table

13 for

troubleshooting

information.

Code
a failure

occurs

deduced

from

seconds

elapses.

with

the number

the indoor
of

times

unit

in operation,

the green

LED

the green

flashes,

Table

LED

blocking

on
unit

12 - Green LED

the indoor

unit

operation.

Between

(Indoor

3
4
14
Table
PROBLEM

Compressor Will Not Start, But Outdoor Fan is Operating

of 0.5

cycle

and

seconds.
the

The
one,

fault

code

a pause

SOLUTION

Unit not energized
Main switch is set to OFF
Main switch fuses are blown
Compressor cycling protection is on
Main power voltage is too low
Electrical connections are too loose or are wrong
Electrical connections of compressor are loose or
wrong
Compressor burnt out; seized or protection device
Wrong refrigerant charge in unit (excessive or low)
or air or other non-condensable
gasses in the
circuit

Stops Due to Over-tem-

Main voltage is too high or too low
Condenser coil obstructed
Outdoor fan off
Wrong indoor unit thermistors
Refrigerant circuit clogged
Reversing valve faulty on heat pump models
Expansion device clogged or covered with ice
Unit selected is too small for application
ments

Runs Continuously

Indoor temperature setting too low or too high
Outdoor unit fan faulty
Air or other non-condensable
cuit
Obstructions

on Outdoor

Discharge Pressure Too High

Suction Pressure

Too High

Suction Pressure

Too Low

Outdoor Fan Cycling Due to OverTemperature Protection

gasses in the cir-

at air intake or dirty indoor unit filters

Check and set to the correct voltage.
Check and tighten or correct connections.
Check and tighten or repair compressor.
Check for the cause and replace compressor if necessary.
Drain refrigerant, evacuate and recharge, CAUTION: Do
not vent refrigerant to the atmosphere; use refrigerant
recovery equipment.
Check voltage setting and adjust if necessary.
Remove obstruction.

Check temperature setting.
Replace outdoor fan.
Drain refrigerant, evacuate and recharge, CAUTION: Do
not vent refrigerant to the atmosphere; use refrigerant
recovery equipment.
Remove obstruction and/or clean filter.
Check cause and repair.

Outdoor coil dirty or obstructed
Condenser fan faulty
Indoor temperature setting too low or too high

Clean or remove obstructions.

gasses in the cir-

Indoor temperature setting too high or too low
Outdoor coil dirty or obstructed
Indoor unit air filter dirty
Indoor temperature setting too high or too low
Reversing valve faulty or internal leak
Indoor temperature setting too high or too low
Evaporator

coil covered with ice

Expansion device or suction line clogged
Outdoor fan does not stop during defrost periods
Electrical connection loose
Fan motor burn out
Fan bearing seized
Expansion device clogged or covered with ice

or repair.

Replace reversing valve.
Drain refrigerant, evacuate and recharge, CAUTION: Do
not vent refrigerant to the atmosphere; use refrigerant
recovery equipment.
Contact a qualified service technician for a system evaluation.

Outdoor fan is stopped

Air or other non-condensable
cuit

Discharge Pressure Too Low

require-

Check the main power connection.
Check and put it to ON position.
Replace fuses.
Wait for 3 minutes.

Check cause and resume operation
Replace thermistors.
Check and remove obstructions.

Replace condenser fan.
Check temperature setting.
Drain refrigerant, evacuate and recharge, CAUTION: Do
not vent refrigerant to the atmosphere; use refrigerant
recovery equipment.
Check temperature setting.
Clean or remove obstructions.
Clean filter.
Check temperature setting.
Replace reversing valve.
Check temperature setting.
Air circulation on the evaporator
repair.
Check and repair.
Check electrical parts.
Check connections.

not sufficient; check and

Replace.
Check and repair.
Drain refrigerant, evacuate and replace.
CAUTION: Do not vent refrigerant to the atmosphere;
refrigerant recovery equipment.

of 3

13 - Troubleshooting

Frequent Ice-Build-Up
Coil

flash

Unit Fault)

POSSIBLE CAUSE

Compressor and Fan of the Outdoor
Unit Will Not Start

Compressor

at intervals
one

DESCRIPTION
Room Air Sensor Fault
Indoor Unit Coil Sensor Fault
Outdoor Unit Air Sensor Fault

CODE

Compressor
perature

flashes

use

2009 Carrier Corp. • 7310 W. Morris

Manufacturer

reserves

the right to change,

St. • Indianapolis,

IN 46231

at any time, specification8

and design8

Printed
without

in U.S.A.

Edition

notice and without

Date:

09/09

obligations,

Catalog No: 40QNC-Q-9SI
Replaces:

40QN-SSl

Source Exif Data:

File Type                       : PDF
File Type Extension             : pdf
MIME Type                       : application/pdf
PDF Version                     : 1.2
Linearized                      : No
Page Count                      : 24
Page Layout                     : SinglePage
Page Mode                       : UseNone
Producer                        : Goby Monitor Application version 4, 0, 0, 13
Create Date                     : Thu Feb 25 04:13:19 2010
Author                          : 
Title                           : 
Subject                         :

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Carrier 38HDF018300 User Manual HEAT PUMP Manuals And Guides L1002285

CARRIER Air Handler (indoor blower&evap) Manual L1002285 CARRIER Air Handler (indoor blower&evap) Owner's Manual, CARRIER Air Handler (indoor blower&evap) installation guides

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