Carrier 38YSA Product data

38YSA
Split-System Heat Pump
H_.AllI_I & CO01JI_G
Visit
www.camer.com
Installation
NOTE: Read the entire instruction
installation.
manual
and Start-Up Instructions
before starting
the
This symbol --4 indicates a change since the last issue.
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 fu'e 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 National
Electrical Code (NEC) for special requirements.
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 the 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 installtion, reliability, or
operation.
A98516
Fig. 1--Model
6. Avoid direct tubing contact with water pipes, duct work, floor
joists, wall studs, floors, and walls.
7. Do not suspend refrigerant tubing from joists and studs with a
rigid wire or strap which comes in direct contact with tubing.
(See Fig. 2.)
8. Ensure that tubing insulation is pliable and completely
rounds vapor tube.
sur-
9. When
and
necessary,
conform
10. Isolate
use hanger
to shape
hanger
Before
installing,
disconnect
may be more
modifying,
switch
than
or servicing
must
1 disconnect
switch
with
a suitable
cause
personal
injury
warning
system,
be in the OFF
switch.
label,
Lock
out
There
and tag
shock
can
or death.
INSTALLATION RECOMMENDATIONS
NOTE: In some cases noise in the living area has been Iraced to
gas pulsations from improper installation of equipment.
1. Locate unit away from windows, patios, decks, etc. where unit
operation sounds may disturb customer.
2. Ensure that vapor and liquid tube diameters are appropriate to
capacity of unit.
3. Run refrigerant tubes as directly
unnecessary tarns and bends.
4. Leave some
vibration.
slack between
as possible
structure
reserves
PC 101
and unit to absorb
Catalog No. 533-80022
by using metal
sleeves
of insulation.
IMPORTANT: Maximum liquid line size is 3/8-in. O.D. for all
residential applications including long line.
IMPORTANT:
Product Data
Always install a liquid-line filter drier. Refer to
Digest for appropriate
part number. Obtain filter
drier from service
parts or your distributor
or change
Step l_heck
Move
unit.
at any time, specifications
Pnnted in U.S.A.
or branch.
INSTALLATION
UNPACK
the right to discont_lue,
insulation
are 1 in. wide
(See Fig. 2.)
When outdoor unit is connected to factory-approved indoor unit,
outdoor unit contains system refrigerant charge for operation with
indoor unit of the same size when connected by 15 ft of
field-supplied or factory accessory tubing. For proper unit operation. check refrigerant charge using charging information located
on control box cover.
by avoiding
5. When passing refrigerant tubes through the wall, seal opening
with RTV or other pliable silicon-based caulk. (See Fig. 2.)
Manufacturer
from
to shape
straps which
insulation.
main elec-
position.
Electrical
of tubing
straps
bent to conform
trical
38YSA
Form
Equipment and Job Site
UNIT
to final location.
Remove
carton
taking
care not to damage
or designs without notice and without incurring obligations.
38YSA-4SI
Pg 1
02-02
Replaces:
38YSA3S}
NOTE: Avoidcontact beiween tubing andstmctum
KNOCKOUTSiN BASEPAN
12)PLACES
OUTDOOB
WALL-- INDOOB
WAL 7
CAULK_
LIQUIDTUBE
SULATION .._
A
L-.. VAPOR TUBE
THROUGH THE WALL
83/16
VIEW FROM TOP
_
A97548
Dimensions
E_\
i _VAPORj--
k
#•
1 MIN. _
_
INSULATION
TUBE
_
UNIT
SIZE
024-042
LIQUtD TUBE
048
SUSPENSION
MINIMUM MOUNTING
PAD DIMENSIONS
Support
Snow
Feet
Stand
26 X 32
31 X 35
34X42
36X46
Fig. 3_Mounting
(in.)
TIEDOWN
KNOCKOUT
LOCATIONS
A
B
4
9-3/4
5-5/16
11-13/16
Unit to Pad
A94028
Fig. 2--Connecting
Tubing
Step 4-----Operating Ambients
Installation
The minimum outdoor operating ambient in cooling mode is 55°F,
and the maximum outdoor operating ambient in cooling mode is
125°F. The maximum outdoor operating ambient in beating mode
is 66°F.
INSPECT EQUIPMENT
F'de claim with shipping company prior to installation if shipment
is damaged or incomplete. Locate unit rating plate on unit comer
panel. It contains information
needed to properly install unit.
Check rating plate to be sure unit matches job specifications.
Step 5_Elevate
Unit
IriX[,-_._
Step 2--Install
on a Solid,
Level Mounting Pad
Accumulation
If conditions or local codes require the unit be attached m pad, tie
down bolts should be used and fastened through knockouts
provided in unit base pan. Refer to unit mounting pattern in Fig. 3
to determine base pan size and knockout hole location.
On rooftop
applications,
above
roof
surface..
isolate
unit
and
mount
Place
tubing
set
above
from
members
to adequately
support
vibration
to
Consult
building.
on level platform
unit
or frame
a load-hearing
structure.
Arrange
unit and minimize
local
codes
to winds
above
of water
and
ice
in base
pan
may
cause
damage.
Elevate unit per local climate and code requirements to provide
clearance above estimated snowfall level and ensure adequate
drainage of unit. Fig. 4 shows unit with accessory support feet
installed. Use accessory snow stand in areas where prolonged
freezing temperatures are encountered. Refer to separate Installation Instructions packaged with accessories.
6 in.
wall
and
supporting
transmission
governing
equipment
of
rooftop
applications.
Roof
mounted
units
exposed
wind baffles to achieve
adequate
defrost.
Guideline
for wind baffle construction.
5 mph may require
Consult
Low-Ambinnt
NOTE: Unit must be level to within _+ 2 ° (_+ 3/8 inJft)
compressor manufacturer specifications.
Step 3_Clearancs
per
Requirements
When installing, allow sufficient space for airflow clearance.
wiring, refrigerant piping, and service. Allow 30-in. clearance to
service end of unit and 48 in. above unit. For proper airflow, a 6-in.
clearance on I side of unit and 12 in. on all remaining sides must
be maintained. Maintain a distance of 24 in. between units.
Position so water, snow, or ice from roof or eaves cannot fall
directly on unit.
On rooftop applications,
surface.
locate
unit at least 6 in. above roof
A98533
Fig. 4_Accessory
2
Support Feet
Step 6--Thermostatic
Expansion Valve
For proper unit operation and reliability, units must be
installed with field-supplied hard shutoff TXV. Do not install
with evaporator coils having capillary robe metering devices
or pistons.
Due to system design, this unit must be installed with a
factory-listed indoor section. Non-approved coils could cause
performance and rehahility problems. Refer to pre-sale literature for approved indoor sections.
The outdoor
section
is factory
for metering
refrigerant
during
location
of TXV
matched
with an approved
shut-off
units.
TXV.
Step 7_heck
and
equipped
heating
sensing
See Product
bulb.
indoor
with a hard shut-off
A9_17
TXV
Fig. 7--Defrost
mode. See Fig. 5 and 6 for
This
heat
pump
fan coil equipped
Data
DEFROST
THERMOSTAT
literature
must
with
for approved
Location
be
a hard
indoor
Defrost Thermostat
Check defrost thermostat to ensure it is properly located and
securely attached. There is a liquid header with a brass distributor
and feeder robe going into outdoor coil. At the end of 1 of the
feeder tubes, there is a 3/8-in. O.D. stub tube approximately 3 in.
long. (See Fig. 7.) The defrost thermostat should be located on stub
tube. Note that there is only l stub tube used with liquid header,
and on most units it is the bottom circuit.
Step 8--Make
Thermos_t
To prevent
damage
to unit
or service
valves
observe
the
with
wet cloth
or use a heat
sink
following:
• Use a brazing
shield.
• Wrap
material.
valves
service
Piping Connections
Outdoor units may be connected to indoor section using accessory
tubing package or field-supplied refrigerant grade tubing of correct
size and condition. For tubing requirements beyond 50 It, substantial capacity and performance losses can occur. Following the
recommendations
in the Residential Split System Long-Line
Application Guideline will reduce these losses. Refer to Table 1
for field tubing equivalent fine length. Refer to Table 2 for
accessory requirements.
Relieve pressure and recover all refrigerant before system
repair or final unit disposal to avoid personal injury or death.
Use all service ports and open all flow-control devices,
including solenoid valves.
SENSING BULB---_
o'o og, LocK
7
SENSING
"_" SUCTION TU
8 O'CLOCK
7/aIN. OD & SMALLER
4 O'CLOCK
LARGER
THAN 7/sIN. OD
STRAINER
TX_
A81032
Fig, 5--Positioning
of Sensing
A96433
Bulb
Fig. 6_TXV
3
Location
on Outdoor
Section
Table 1--Refrigerant
UNIT
SIZE
Connection
Connections
LIQUID
Diameter
and Recommended
VAPOR
Connection Diameter
Tube Diameter
Liquid and Vapor Tube Diameters (In.)
Tube Diameter
VAPOR (LONG LINE)
Connection Diameter
Tube Diameter
024
3/8
3/8
5/8
5/8
5/8
030, 036
3/8
3/8
314
3/4
3/4
3/4
7/8
042, 048
3/8
3/8
7/8
7/8
7/8
7/8
NOTES:
1. Tube diameters are for lengths up to 50 ft. For tubing lengths greater than 50 ft, consult Residential Split System L0ng-Line Application Guideline.
2. Do not apply capillaw tube indoor coils to these units.
For buried-line
distributor.
applications
greater
than 36 in., consult
your
If refrigerant tubes or indoor coil are exposed to atmosphere,
must be evacuated to 500 microns to eliminate
contamination
moisture
local
they
and
in the system.
IMPORTANT:
and outdoor
not rubbing
attention to feeder
secure and tight.
Step
OUTDOOR
INDOOR
Outdoor
UNIT
CONNECTED
unit contains
correct
for maximum
factory
tubing on both indoor
9_Make
tubes,
making
Electrical
sure wire ties on feeder
system
refrigerant
charge
when connected
tubing.
Check
for operaby 15 ft of
refrigerant
efficiency.
Connect tubing to fittings on outdoor unit vapor and liquid service
valves. (See Table 1.) Use refrigerant grade tubing.
Connections
To avoid personal injury or death, do not supply power to unit
with compressor terminal box cover removed.
Be sure field wiring complies with local and national fire, safety,
and electrical codes, and voltage to system is within limits shown
on unit rating plate, Contact local power company for correction of
improper voltage. See unit rating plate for recommended circuit
protection device.
NOTE: Operation of unit on improper line voltage constitutes
abuse and could affect unit reliability. See unit rating plate. Do not
install unit in system where voltage may fluctuate above or below
permissible limits.
CONNECTION
NOTE: Use copper wire only between disconnect
unit.
Service valves are closed from factory and ready for brazing. After
wrapping service valve with a wet cloth, tubing set can be brazed
to service
valve using
brazing material.
tubing and indoor
should
tubes are
TO FACTORY-APPROVED
REFRIGERANT TUBING
SWEAT
to be certain
UNIT
don with indoor unit of same size
field-supplied
or factory-accessory
charge
Check
unit has not shifted during shipment. Ensure tubes are
against each other or any sheet metal. Pay close
include
either
silver
bearing
or non-silver
Consult local code requirements.
coil are now ready for leak testing.
all field and factory
joints.
bearing
Refrigerant
This check
NOTE: Install branch circuit disconnect of adequate size per
NEC to handleunit starting current.Locate disconnectwithin sight
from and readily accessible from unit, per Section 440-14 of NEC.
ROUTE GROUND AND POWER WIRES
Remove
wiring.
provided
Table 2--Accessory
REQUIRED
ACCESSORY
Crankcase Heater
Evaporator
Freeze Thermostat
access
Extend
panel and control
wires from
box cover
disconnect
and into unit control
to gain access
through power
Usage
FOR
LOW-AMBIENT
APPLICATIONS
REQUIRED
(BELOW 55"F)
Yes
(OVER 50 FT)
Yes
No
No
No
Compressor Start Assist
Capacitor and Relay
Yea
Yes
MotorMaete_
Control,
or
Low-Ambient Pressure Switch
Yes
No
Wind Baffle
See Low-Ambient Instructions
No
Solenoid Valve
or
Hard Shutoff TXV
Recommended
Liquid-Line
Ball Bearing Fan Motor
FOR
LONG-LINE
APPLICATIONS*
Yes
Feet
wiring
box.
Accumulator
Support
switch and
No
No
See Long-Line
Application
Guideline
Yes t
No
• For tubingline sets between50 and 175 ft. refer to ResidentialSplit System Lor_j-LineApplicationGuideline.
_:RequiredforLow-AmbientControllerIfoll modulation feature) and MotorMasterControl only.
to unit
hole
rN
Step 12_tart-Up
.i_EIfl?llTd,]
VN[,,.E(I_.]
The unit cabinet must have an uninterrupted or unbroken
ground to minimize personal injury if an electrical fault
should occur. The ground may consist of electrical wire or
metal conduit when installed in accordance with existing
electrical codes. Failure to follow this warningcan resultinan
electric shock, fin'e,or death.
CONNECT
Connect
safety.
GROUND
ground
Connect
wire
power
AND POWER
to ground
wiring
To prevent compressor damage or personal injury, observe
the following:
• Do not overcharge system with refrigerant.
• Do not operate unit in a vacuum or at negative pressure.
• Do not disable low-pressure switch.
In scroll compressor applications:
• Dome temperatures may be hot.
WIRES
connection
to contactor
in control
as shown
_I
box for
in Fig.8.
rv_l[*'?_*_l
DISCONNECT
PER N. E. C. AND/OR
LOCAL CODES
To prevent personal injury wear safety glasses, protective
clothing, and gloves when handling refrigerant and observe
the following:
• Back seating service valves are not equipped with Schrader
valves. Fully back seat (counter clockwise) valve stem before
removing gage port cap.
CONTACTOR
FIELD POWER
1
O°O
WIRING
FIELD GROUND
WIRING
Q
J
GROUND
LUG
repair
or final unit
disposal,
A91056
Fig. 8_Line
Power Connections
Follow
these
negative
steps
pressure.
seat (open)
CONNECT CONTROL WIRING
1. Fully
back
Route 24-v control wires through control wiring grommet and
connect leads to control wiring. (See Fig. 9-13.)
2. Unit
is shipped
Use No. lg AWG color-coded, insulated (35°C minimum) wire. If
thermostat is located mort than l0 ft from unit, as measured along
the control voltage wires, use No. 16 AWG color-coded wire to
avoid excessive voltage drop.
to properly
suction
caps
installed.
refrigerant
wrench
body
an additional
electrical
Use furnace transformer, fan coil transformer, or accessory transformer for control power, 24-v/40-va minimum.
5, Set room
is below
indoor
ambient
thermostat
NOTE:
and
is opened
and tighten
wrench
to
with
on valve
metal.
to energize
system.
temperature.
Be sure set point
temperature.
to HEAT
or COOL
and fan control
unit
for
to ON
15 minutes.
OF OPERATION
Defrost
control
board
IMPOFITANT: Check factory wiring and wire connections to
ensure terminations are secured properly. Check wire routing to
ensure wires are not in contact with tubing, sheet metal, etc.
may be initiated
With
power
supplied
Step lO_Compressor
Cooling
is equipped
upon
to indoor
with 5-minute
any interruption
and outdoor
lockout
of power.
units,
transformer
is
energized.
When equipped with a crankcase heater, furnish power to heater a
minimum of 24 hr before starting unit. To fiirnish power to heater
only, set thermostat to OFF and close electrical disconnect to
outdoor unit.
On a call for cooling,
motor
and compressor
A crankcase heater is required if refrigerant tubing is longer than
50 ft.
relay,
starting
When
thermostat
Step 11_lnstall
contactor
Refer to the individual instructions packaged with kits or acces
sories when installing.
valves.
(closed)
system
of sheet
to desired
which
Electrical Accessories
after
or AUTO
mode,
as desired.
Operate
Check system refrigerant
charge.
SEQUENCE
seated
finger-tight
distortion
timer
Crankcase Heater
caps
disconnects
4. Set room thermostat
caps
and avoid
tube service
front
1/12 tam. Use a backup
fiats to prevent
3. Close
stem(s)
stem
Replace
a system
and vapor
valve
Replace
All wiring must be NEC Class 1 and must be separated from
incoming power leads.
NOTI:: Use of available 24-v accessories may exceed the minimum 40-va power requirement, Determine total transformer loadhag and increase the transformer capacity or split the load with an
accessory transformer as required.
liquid
with
flow.
pumpdown
R-G. Circuit
position.
Circuit
R-Y
indoor
NOTE:
energizes
blower
is satisfied,
If indoor
makes
reversing
circuit.
and blower
the blower
thermostat
R-O energizes
relay.
contactor,
motor
R-O,
switching
R-Y,
and
it to cooling
starting
R-G energizes
outdoor
indoor
fan
unit blower
on high speed.
its contacts
Compressor
unit is equipped
runs an additional
circuits
valve,
open,
de-energizing
and motors
should
with a time-delay
90 sec to increase
the
stop.
relay circuit,
system
efficiency.
Heating
On
a call
Circuit
for heating,
R-Y energizes
compressor.
blower
Circuit
motor
Should
second-stage
sequencer,
room
bringing
makes
circuits
R-Y and R-G.
starting
outdoor
fan motor
R-G energizes
on high
temperatme
thermostat
contactur,
indoor
blower
and
relay,
starting
made
through
speed.
continue
thermostat
to fall,
bulb.
R-W2
Circuit
on first bank of supplemental
is
R-W2
energizes
electric
a
heat and
CARRIER
PROGRAMMABLE
THERMOSTAT
MODEL HP
FA, FB, FC,
FD, FF, FH
FAN COIL
CARRIER
PROGRAMMABLE
33"_ERMC_TAT
MODEL HP
ONE
FA, FB, FC, FO, FF, FH
FAN COIL
HEAT
PUMP
OUTDOOR
THERMOSTAT
HEAT
PUMP
24 VAC HOT
24 VAC HOT
INDOOR
INDOOR
FAN
FAN
HEAT STAGE ;
r-F
HEAT STAGE 2
COOL/HEAT
TAGE 1
COOL/HEAT
STAGE 1
VS COOLING
O/W2
L
YIPN;
I
RVS COOLING
I
qOT USED
ODT
--4- LE
Lm_-
NOT USED
24 VAC COM
24 VAC COM
NOT USED
NOT USED
TROUBLE
TROUBLE
* IF AVAILABLE
OPTIONAL
OUTDOOR
SENSOR
OPTIONAL
OUTDOOR
__
SENSOR
CONNECTION
_
i CONNECTIOh
A97534
NOTE:
Remove wires from cdmp nut th indoor fan coil
when installing outdoor _ermostat.
IMPORTANT:
When using outdoor thermostat, W 2 must be
energized when requesting supplemental heat.
Ag7535
CARRIER
pROGRAMMABLE
THERMOSTAT
MODELHP
FA, FB, FC,
FD, FF, FH
FAN COIL
HEAT
PUMP
TWO
OUTDOOR
THERMOSTATS
ODT
CARRIER
PROGRAMMABLE
THERMOSTAT
MODELHP
->4VAC HOT
INDOOR
FAN
4OFKA
FK4C
FAN COIL
-]
HEAT STAGE 2
HEAT
PUMP
r
!1JUMPER
24 VAC HOT
COOL/HEAT
STAGE 1
INDOOR
FAN
[]
RVS COOLING
HEAT STAGE 2
NOT USED
12JUMPER
COOL/HEAT
STAGE 1
24 VAC COM
RVS COOLING
NOT USED
NOT USED
_--_
TROUBLE
24 VAC COM
OPTIONAL
OUTDOOR
-SENSOR
CONNECTION
NOTE:
TROUBLE
Remove wires from crimp nut in indoor fan coil
when installing outdoor thermostats.
IMPORTANT:
[]
NOT USED
OUTDOOR
SENSOR
CONNECTIO
OPT,ONAL
When using outdoor thermostats, W2 must be
energized when requealing supplemental heat.
P'_
A97536
Fig. 9_Typical 24-v Circuit Connections using Carrier Model HP Thermostat with Fan Coils
and No Outdoor Thermostat, 1 Outdoor Thermostat, or 2 Outdoor Thermostats
A98629
OTHER
HPTHERMO_TAT
FA, FB, FC,
FD, FF, FM
FAN COIL
FA, FB, FC,
FD, FF, FH
FAN COIL
OTHER
HP THERMOSTAT
HEAT
PUMP
HEAT
PUMP
ONE
OUTDOOR
THERMOSTAT
w
ODT
24 VAC HOT
2,VAC,OT
_
24 VAC COM
_-
24 VAC COM
HEAT STAGE 2 _-
HEATSTAGE2
_7
[_
_'
,___
COOL/HEAT
STAGE 1
INDOOR
,H_os
_A.r-_:
FAN
RVS COOLING
......
EMERGENCY
HEAT
•
R SC ,NG
_tll
EMERGENCY
* IF AVAILABLE
NOTE:
A97374
Remove wires from crimp nut in indoor fan coil
when installing outdoor thermostat.
IMPORTANT:
OTHER
HP THERMOSTAT
-
___
FA, FB, FC,
FD, FF, FH
FAN COtL
HEAT
PUMP
When using outdoor thermostat, W 2 must be
energized when requesting supplemental heat.
TWO
OUTDOOR
THERMOSTATS
A97403
ODT
OTHER
HP THERMOSTAT
24 VAC HOT
40FKA
FK4C
FAN CO_L
-]
24 VAC HOT
24 VAC COM
HEAT STAGE 2
COOL/HEAT
STAGE
1
[_
INDOOR
[_
I
JUMPER
[]
--_
[]
-_
]
FAN
HEAT
PUMP
J2 JUMPER
-_]
RVS COOLING
* IF AVAILABLE
NOTE:
[]
Remove wires from crimp nut in indoor fan coil
when installing outdoor thermostats.
IMPORTANT:
EMERGENCY
HEAT
When using outdoor thermostats, W 2 must he
energized when requesling supplemental heat.
[_"
A97404
Fig. 10---Typical 24-v Circuit Connections
No Outdoor
Thermostat,
1 Outdoor
A98630
using Other HP Thermostats with Fan Coils and
Thermostat,
7
or 2 Outdoor
Thermostats
CARRIER
PROGRAMMABLE
THERMOSTAT
MODEL HP
CARRIER
PROGRAMMABLE
THERMOSTAT
MODEL HP
FA, FB, FC, FH
FAN COIL WITH
SMART HEAT
HEAT
PUMP
24 VAC HOT
INDOOR
FA, FB, FO, FH
ONE
FAN COIL WITH
OUTDOOR
SMARTREAT
THERMOSTAT
24 VAC HOT
[:_
INDOOR FAN
{_]
--_r-_
..... £_ ........ p_@
•,i; r-{_]
HEAT STAGE 2
FAN
III
.....
COOL/HEAT
STAGE
1
HEAT
PUMP
[_
I
.!'÷±t-_
I I
-,; r -F-q-1
HEAT STAGE 2
I
RVS COOLING
ii
COOL/HEAT
STAGE I
NOT USED
RVS COOLING
24 VAC COM
NOT USED
[_
24 VAC COM
[_
___j 1-
_J
i w;.t
NOT USED
TROUBLE
-1_ W2T L _=/"JW
1
NOT USED
[-_
TROUBLE
:1--_--]
OPTIONAL
OUTDOOR
-SENSOR
CONNECTION
i/
[_
OPTIONAL
OUTDOOR
-SENSOR
CONNECTION
A97542
A97541
CARRIER
PROGRAMMABLE
THERMOSTAT
MODEL 2S
40EKA
FK4C
FAN COIL
HEAT
PUMP
f
CARRIER
PROGRAMMABLE
THERMOSTAT
MODEL HP
FAN
HEAT STAGE 2
24 VAC HOT
COOL/HEAT
STAGE 1
i-_
HEAT STAGE 2
[_
HEAT STAGE 3
Y 1/W_._2
REMOVE
[_
[_
it
COOL/HEAT
STAGE 1
_ I
RVS COOLING
L-._.
RVS COOLING
NOT USED
[_
FAN
p. ....
24 MAC HOT
INDOOR
PA, FB, FC, FH
FAN COIL WITH
HEAT
SMART HEAT
PUMP
SUPPLEMENTAL
HEATING
--
,1,UMPER
E_-I-....... _-_
[_I
CUT
24 VAC CGMM
r_
Rvs HEATING
j[_
TROUBLE
,24 VAC COM
[_
NOT USED
[_I
---J
TROUSLE
_Z]I
.... _
_ _%_R
f STA_%_E
_
...._
.... ____
...._
.... ____
Fn
[_
=
OUTDOOR
SENSOR
CONNECTION
_'__ _L[:_'
"_J_'--
OUTDOOR
OPT,ONA_
_ L_--_-ll
SENSOR
_(
_]
Intelligent Sequencing Applica_on: Model 2S thermostat with
switch C (_FFand switch D ON uses sthg/e-speed heat pump,
FK4 or 40FKA tan ¢oil with selected 2:1 size rang heaters.
Provides 3
stages of auxiliary heat for even heating comfort via W/W1
and YI/W2. Re/er to FK4 or 40FKA Installation Instructions.
CONNECTIO
A97543
A98631
Fig. 11--Typical 24-v Circuit Connections using Carrier Model HP Thermostat with Smart Heat and
No Outdoor Thermostat, 1 Outdoor Thermostat, or 2 Outdoor Thermostats and
Carrier Model 2S Thermostat with FK4C Fan Coil and Intelligent Staging
FA, FB, FC, FH
FAN COIL
SMART HEAT
OTHER
HP THERMOSTAT
24 VAC COM
COOL/HEAT
STAGE 1
INDOOR
FAN
RVS COOLING
EMERGENCY
HEAT
24 VAC COM
..... !f5_- ......
_-
......._1
INDOOR FAN
_"
....... t_1
RVS COOLING
....... _1 ......
"7
[_
......
..... _E]
EMERGENCY
HEAT
CUT
/--JW1
......
l/
HEAT STAGE 2
.....
COOL/HEAT
STAGE I
I
HEAT
PUMP
24 VAC HOT
HEAT
PUMP
...... _-1 .....
....... t_1 ......
24 VAC HOT
FA, FB, FC, FH
FAN COIL
SMART HEAT
OTHER
HP _-IERMOSTAT
HEAT STAGE 2
.......
_,
I
iE_l
il_-I
€ -Jw_
......
A97411
Ag7410
FA, FB, FC, FH
FAN COIL
MART HEAT
OTHER
HPTHERMOSTAT
24 VAC HOT
_-
24VAC
_
COM
HEAT
PUMP
_.... E_-L..... J..____
1
COOL/HEAT
STAGE1
---_-.{23 I
I
INDOOR
FAN
i
' _h
RVS C(X)LJNG
EMERGENCY
HEAT
!
J-_2]
I
_.
HEAT STAGE 2
_J
A974"{2
Fig. 12--Typical 24-v Circuit Connections using Other HP Thermostats with Smart Heat and
No Outdoor Thermostat, 1 Outdoor Thermostat, or 2 Outdoor Thermostats
9
CARRIER
DUALFUEL
THERMOSTAT
MODEL DF
SINGLE-STAGE
FURNACE
24 MAC HOT
[_--
FAN
[_--
FURNACE
[_-
COMPRESSOR
[_-
CARRIER
DUALFUEL
THERMOSTAT
MODELDF
HEAT PUMP
TWO-STAGE
OR
VARIABLE SPEED
FURNACE
HEAT PUMP
.__q®
.......
24 VAC HOT
[_-!
FAN
E_-d ---+_]
.... __ .... ___L_
FURNACE LO
[__]
.... _[_..... _L__
COMPRESSOR _--"
____ ......
RVS COOLING
FURNACE
HI
N/ARVS
COOLING
24 VAC COM
[_"
RVS HEATING
[_
.... -_ .... _-_-D
24 VAC COM
_-
RVS HEATING
r-_
......
See notes 7 and 8
See note 7
RVS SENSING
RVS SENSING
[_
OUTDOOR
[_'-
-
OUTOOOR
F[_2-
TEMPERATURE
I SENSOR
UTDOOR
_"°_T'°"_E_3-"
.......
TEMPERATURE
OUTDOOR
SENSOR
A97538
Fig. 13--Typical
WIRING
DIAGRAM
1. CARRIER
RATE
24-v Circuit Connections
2. WIRING
MODEL
MUST
using Carrier Model DF Thermostat with Single- or 2-Stage Furnace
NOTES:
THERMOSTAT
FOR
A97539
WIRING
NUMBERS
CONFORM
DIAGRAMS
BEGINNING
ARE ONLY
WITH TSTAT
TO NEC OR LOCAL
24-V FACTORY WIRING
CODES.
24-V FIELD WIRING
3. SOME UNITS ARE EQUIPPED
WITH PRESSURE
SWITCH(ES),
PERATURE
SWITCH,
OR 5-MINUTE
COMPRESSOR
CYCLE
TECTION.
CONNECT
24-V
PROVIDED
STRIPPED
LEADS.
4. A LIQUID-LINE
UNITS.
TO
FIELD SPLICE CONNECTION
FACTORY-
VALVE
IS
REQUIRED
ON
OUTDOOR
THERMOSTAT
SOME
EMERGENCY
ARE
COMPRESSOR
FACTORY
CYCLE
SEE
WIRING
TEMPRO-
@
SOLENOID
5. THERMOSTATS
LIMIT.
FIELD
LEGEND
ACCU-
CONFIGURED
PROTECTION
THERMOSTAT
AND
WITH
4 CYCLES
INSTALLATION
HEAT RELAY
5-M1NUTE
PER
INSTRUCTIONS
HR
SUPPLEMENTAL
HEAT RELAY
FOR
DETAILS.
A97413
6. TO
STAGE
ELECTRIC
THERMOSTAT
7. FOR
DUAL
DUAL
FOR
EXAMPLE:
DUAL
NALS
AND
OUTDOOR
UNDERLINED
LETTER
ON
ITS USAGE.
MEANS
MEANS
O
W2
SENSOR
MUST
BE ATrACHED
IN ALL
INSTALLATIONS.
BETWEEN
O/W2
AND
L THERMOSTAT
TO
2-STAGE
TERMI-
BE PRESENT.
O CONNECTIONS
EXIST
OR
TERMINAL.
CONSULT
INSTRUCTIONS.
INDICATES
O/W2
O/W2
WIRE
MUST
HEAT,
THERMOSTATS,
TEMPERATURE
FUEL
JUMPER
8. YI
INSTALLATION
FUEL
TERMINAL
OUTDOOR
RESISTANCE
MAY
ONLY
BE
A WIRE
FURNACES
RATHER
THAN
MAY
NOT
A SCREW
10
providing
electrical
potential
If outdoor
temperature
(field-installed
option),
on second
When
-'_ Quiet
Quiet
bank of supplemental
thermostat
coatactoc
to second heater
sequencer
If it is desirable to observe a complete defrost
the thermostat
must be closed as follows:
(if used).
falls below setting of outdoor thermostat
contacts close to complete circuit and bring
is satisfied,
and sequencer.
electric
its contacts
All heaters
I. Turn
heat.
2. Disconnect
open,
and motors
de-energizing
should
(See
stop.
Shift is a field-selectable
defrost
mode, which will eliminate
noise that could be heard at the start of the defrost
and restarting
of heating
3 (on defrost
board)
cycle.
It is selected
by placing
DIP switch
compressor
will turn off for 30 sec, then
defrost. At the start of heating cycle after
starting
in the heating
lead from OF2 on control
to prevent
board
grounding.
a few minutes
in heating
closing
mode,
point
liquid line temperature
of defrost
thermostat
(ap-
NOTE: Unit will remain in defrost until defrost thermostat
reopens at approximately 80°F coil temperature at liquid line or
remainder of defrost cycle time.
5. Turn off power to outdoor and reconnect fan motor lead to
OF2 on control board after above forced defrost cycle.
of defrost mode, reversing valve will de-energize,
the
will turn off for another 30 sec, and the fan will turn
off for 40 sec, before
unit.
fan motor
should drop below
proximately
30°F).
When Quiet Shift switch is placed in ON position, and a defrost is
initiated, the following
sequence of operation
will occur, Revers-
conclusion
compressor
outdoor
Fig. 15.) Tape
4. After
cycle
in ON position.
ing valve will energize,
turn back on to complete
to outdoor
weather,
3. Restart unit in heating mode, allowing frost to accumulate on
outdoor coil.
Shift
occasional
off power
in wanner
Step 13--Check
mode.
--_ Defrost
Factory
charge
cooling
mode,
in heating
The defrost control is a time/temperature control which includes a
field-selectable time period (DIP switch 1 and 2 on the board)
between defrost cycles of 30, 60, 90, or 120 minutes (factory set at
90 minutes).
on unit
refer to Cooling
mode,
COOLING
Charge
is shown
refer
ONLY
to For
rating
Mode
plate. To check
Procedure.
Heating
Only
charge
To check
in
charge
Procedure.
PROCEDURE
NOTE: [f su_ooling
charging conditions are not favorable,
charge must be weighed in accordance with unit rating plate -+0.6
oz/ft of 3/g-in. liquid line above or below 15 ft respectively.
EXAMPLE:
To initiate a forced defrost, two options are available depending on
the status of the defrost thermostat.
To calculate additional charge required for a 25-ft line set:
If defrost thermostat is closed, speedup pins (J 1) must be shorted
by placing a fiat head screwdriver in between for 5 sec and
releasing, to observe a complete defrost cycle. When the Quiet
Shift switch is selected, compressor will be turned off for two 30
sec intervals during this complete defrost cycle as explained
previously. When Quiet Shift switch is in factory default OFF
position, a normal and complete defrost cycle will be observed.
25 ft - 15 ft = 10 ft X 0.6 oz/ft = 6 oz of additional charge
Units installed with cooling mode TXV require charging with the
subcooling method.
1. Operate
charge.
unit a minimum
of i0 minutes
before checking
2. Measure liquid service valve pressure by attaching an accurate
gage to service port.
If defrost thermostat is in open position, and speedup pins are
shorted (with a flat head screwdriver) for 5 sec and released, a
short defrost cycle will be observed (actual length is dependent
upon the selected Quiet Shift position), When Quiet Shift switch is
in ON position, the length of defrost is 1 minute (30 sec
compressor off period followed by 30 sec of defrost with compressor operation). On return to heating operation, compressor will
again turn off for an additional 30 sec and the fan for 40 sec. When
the Quiet Shift is in OFF position, only a brief 30 sec cycle will be
observed.
3. Measure
liquid
line
temperature
tbernaistor
type or electronic
outdoor coil.
4. Refer
to unit rating
5. Refer
to Table
temperature
plate for required
3. Find
intersects
the point
measured
6. To obtain required subcoohng
line pressure,
add refrigerant
higher
lower.
HEATING
by
attaching
thermometer
subcooling
where
liquid
line near
temperature.
required
service
subcooling
valve pressure.
temperature
at a specific liquid
if liquid line temperature
is
than indicated
or reclaim refrigerant
Allow a tolerance
of + 3°F.
ONLY
an accurate
to liquid
if temperature
is
PROCEDURE
1. Defrost unit before checking charge, Outdoor coil must be free
of frost and/or ice.
1. Accumulator may momentarily hold refrigerant after defrost
cycle, therefore, allow 15 min. of normal operation following
defrost cycle before checking charge.
--cs3--
Fig. 14-Defrost Control
2. This outdoor unit is equipped with a thermal expansion
device, therefore the subcooling chart (See Table 4) may be
used for checking purposes only.
A99442
11
Table 3_Required
Step 14---Final Checks
IMPORTANT:
Before leaving job, be sure to do the following:
1. Securely fasten all panels and covers.
LIQUID
PRES_URE AT
SERVICE VALVE
(PSIG)
5
134
71
66
61
56
141
74
69
64
59
148
77
72
67
62
156
80
75
70
65
163
83
78
73
68
171
86
81
76
71
179
89
84
79
74
187
92
87
82
77
196
95
90
85
80
205
98
93
88
83
214
101
96
91
86
223
104
99
94
89
233
107
102
97
92
243
110
105
100
95
253
113
108
103
98
264
116
111
106
101
274
119
114
109
104
285
122
117
112
107
297
125
120
115
110
309
128
123
118
113
321
131
126
121
116
331
134
129
124
119
346
137
132
127
122
359
140
135
130
125
2. Tighten service valve stem caps to 1/12-turn past finger tight,
3. Leave User's Manual with owner. Explain system operation
and periodic maintenance requirements outlined in manual.
4. Fill out Dealer Installation
file.
Checklist and place in customer
CARE AND MAINTENANCE
For continuing high performance and to minimize possible equipment failure, periodic maintenance must be performed on this
equipment.
Frequency of maintenance may vary depending upon geographic
areas, such as coastal applications.
Copynght
2002 CARRIER
Manufacturer
Corp. ° 7310 W. Monis St. • Indianapolis,
reserves the right to discontinue,
PC 101
Catalog No, 533-80022
Liquid-Line Temperature (*F)
REQUIRED SUBCOOUNG
TEMPERATURE
(*F)
10
15
IN 46231
38ysa4si
or ¢hange at any time, specifications
Printed in U.S.A.
20
Form
or designs
38YSA-4SI
without
notice
P9 12
and without
02-O2
incurring obligations.
Replaces:
38YSA3SJ