Carrier 38YXA060 SERIES330, 38YXA060 SERIES310, 38YXA048 SERIES330, 38YXA048 SERIES300, 38YXA042 SERIES330 Installation Guide
...
38YXA
HEATING & COOUNG
Visit www.carrier.cmn
Installation and Start-Up Instructions
NOTE: Read the entire instruction manual before starting the
installation.
This symbol _ 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 _actory-authorized kits or accessories
when modifying this product. Refer to the individual instructions
packaged with the kits or accessories when installing.
Follow all safety codes. Wear safety glasses, protective clothing,
and work gloves. Use quenching cloth for brazing operations.
Have fire extinguisher available. Read these instructions thor-
oughly 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 Z_ •
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 CAU-
TION. These words are used with the safety-alert symbol. DAN-
GER 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.
¥!I W/_'I ;t_'!I_[_
Before installing, modifying, or servicing system, main elec-
trical 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. Electrical shock can
cause personal injury or death.
?':I["I211i_']'_
Puron systems operate at higher pressures than standard R-22
systems. Be certain that service equipment is rated for Puron.
Some R-22 service equipment may not be acceptable. Check
with your distributor.
INSTALLATION RECOMMENDATIONS
NOTE: In some cases noise in the living area has been traced to
gas pulsations from improper installation of equipment.
i. Locate unit away from windows, patios, decks, etc. where unit
operation sound may disturb customer.
2. Ensure that vapor and liquid tube diameters are appropriate to
capacity of unit.
Heat
Deluxe 13 SEER Split-System
Pump with Puron® Refrigerant
A98516
Fig. 1--Model 38YXA
3. Run refrigerant tubes as directly as possible by avoiding
unnecessary tunas and bends.
4. Leave some slack between structure and unit to absorb
vibration.
5. When passing refrigerant tubes through the wall, seal opening
with RTV or other pliable silicon-based caulk. (See Fig. 2.)
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 sur-
rounds vapor tube.
9. When necessary, use hanger straps which are 1 in. wide and
conform to shape of tubing insulation. (See Fig. 2.)
10. Isolate hanger straps fi:om insulation by using metal sleeves
bent to conform to shape of insulation.
When outdoor unit is connected to _actory-approved indoor unit,
outdoor unit contains system refrigerant charge for operation with
indoor unit of 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 and/or in the Check Charge section of this instruction.
IMPORTANT: Maxinmm liquid-line size is 3/8-in. OD for all
residential applications including long line.
IMPORTANT: Always install the factory-supplied Puron heat
pump (bi-flow) liquid-line filter drier. If replacing the filter drier,
refer to Product Data Digest for appropriate part number. Obtain
replacement filter driers from your distributor or branch.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
PC 101 Catalog No 533-80082 Printed in U.S.A. Form 38YXA-4SI Pg 1 2-03 Replaces: 38YXA-3Sl
NOTE: Avoid contact between tubing and structure
OUTDOORWALL--X INDOORWALb7
r.o ,oT E
ON___ VAPOR TUBE
SULATI
THROUGH THE WALL
3/8-1N DIA TIEDOWN
KNOCKOUTS IN BASEPAN
(2) PLACES
!
A
t.
HANGER STRAP-- X
(AROUND VAPOR _ --
i] _ INSULATION
TUBE_,
h
_,,/_ JOIST
VAPOR TUBE
1"MIN.----II_ L LIQUIDTUBE
SUSPENSION
A94028
Fig. 2--Connecting Tubing Installation
INSTALLATION
IMPORTANT: Specifications for this unit in residential new
construction market require the outdoor unit, indoor unit, refrig-
erant tubing sets, metering device, and filter drier listed in presale
literature. There can be no deviation. Consult the Application
Guideline and Service Manual for Residential Split-System Air
Conditioners and Heat Pumps using Puron Refiigerant to obtain
required unit changes for specific applications and for R-22
retrofit.
Step 1--Check Equipment and Job Site
UNPACK UNIT
Move to final location. Remove carton taking care not to damage
unit.
INSPECT EQUIPMENT
File claim with shipping company prior to installation if shipment
is damaged or incomplete. Locate unit rating plate on unit corner
panel. It contains information needed to properly install unit.
Check rating plate to be sure unit matches job specifications.
Step 2--Install on a Solid, Level Mounting Pad
If conditions or local codes reqnire the unit be attached to pact, tie
down bolts should be used and fastened through knockouts
provided in unit base pan. Refer to unit mounting patteru in Fig. 3
to determine base pan size and knockout hole location.
On rooftop applications, mount on level platform or frame. Place
unit above a load-bearing wall and isolate unit and tubing set fi'om
structure. Arrange supporting members to adequately support unit
and minimize transmission of vibration to building. Consult local
codes goveruing rooftop applications.
VIEW FROM TOP
3/16"
A97548
Dimensions (In.)
MINIMUM MOUNTING TIEDOWN KNOCKOUT
UNIT PAD DIMENSIONS LOCATIONS
SIZE Support Snow
Feet Stand
024-060 26 X 32 31 X 35 4 9-3/4
A B
Fig. 3--Mounting Unit to Pad
¥.'_1[,"_&lji_0]2]
Do not allow POE lubricant to come into contact with roofing
materiah POE may deteriorate certain types of synthetic
roofing.
Roof mounted units exposed to winds above 5 mph may require
wind baffles. Consult the Application Guideline and Service
Manual for Residential Split-System Air Conditioners and Heat
Pumps using Puron Refrigerant for wind baffle construction.
NOTE: Unit must be level to within _+ 2 ° (_+ 3/8 in.ift) per
compressor manufacturer specifications.
Step 3--Clearance 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 1 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, locate unit at least 6 in. above roof
surface.
Step 4_Operating Ambient
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 heating mode
is 66°F.
Step 5--Elevate Unit
¥.'_1[R'_IYi[°]TI
Accumulation of water and ice in base pan may cause
equipment 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 Installation In-
structions packaged with accessories.
A98533
Fig. 4_Accessory Support Feet
Step 6--Check Indoor Expansion Device
r:ll[R_ri_,]3
For proper unit operation and reliability, units must be
installed with hard shutoff TXV specifically designed to
operate with Puron. Do not use an R-22 TXV. Do not install
with evaporator coils having capillary tube metering devices
or pistons.
For TXV kit part number and charging instructions, refer to TXV
label in outdoor unit.
FURNACE COILS
If TXV installation is required, remove existing Accu-RaterJ_ from
indoor coi!. Refer to Fig. 5 and 6 and install TXV kit (specifically
designed for Puron) as follows:
i. Install suction tube adapter.
2. Install liquid flare-to-sweat adapter.
3. Connect external equalizer tube to fitting on suction tube
adapter.
4. Position sensing bulb on horizontal portion of suction tube
adapter. Secure using supplied hardware.
5. Insulate bulb after installation. (See Fig. 6.)
6. Leak check all connections.
FAN COILS
If indoor unit (tan coil) comes factory equipped with a bi-flow
hard shutoff TXV specifically designed tbr Puron, no TXV change
is required.
If TXV installation is required, refer to TXV kit Installation
Instructions for details on TXV installation.
Step 7--Check Defrost Thermostat
Check defi'ost thennostat to ensure it is properly located and
securely attached. There is a liquid header with a brass distributor
and feeder tube going into outdoor coil. At the end of 1 of the
feeder tubes, there is a 3/8-in. OD stub tube approximately 3 in.
long. (See Fig. 7.) The defrost themmstat should be located on stub
tube. Note that there is only 1 stub tube used with liquid header,
and on most units it is the bottom circuit.
Step 8--In Long-Line Applications, Install Liquid-Line
Solenoid Valve (LSV)
For refiigerant piping an'angements with equivalent lengths
greater than 50 fl and.or when elevation difference between indoor
and outdoor unit is greater than _+20 fi, follow all requirements of
the Long-Line Guideline section in the Application Guideline and
Service Manual for Residential Split-System Air Conditioners and
Heat Pumps Using Puron Refrigerant.
If required by Long-Line Application Guideline, install LSV kit
Part No. KHALS0401LLS specifically designed for Puron Heat
Pump. LSV should be installed within 2 ft of outdoor unit with
flow an'ow pointing toward outdoor unit. Follow the Installation
Instructions included with accessory kit.
IMPORTANT: Flow arrow must point toward outdoor unit.
Step 9--Make Piping Connections
¥:I [R_lii_0T/1
Do not leave system open to atmosphere any longer than
minimum required lbr installation. POE oil in compressor is
extremely susceptible to moisture absolution. Always keep
ends of tubing sealed during installation.
SENSING
BULB
EQUALIZER
THERMOSTATIC
EXPANSION
VALVE
Fig. 5--Typical TXV Installation
A91277
7/8IN. OD & SMALLER LARGER THAN 7/8 IN. OD
A81032
Fig. 6--Positioning of Sensing Bulb
3
FEEDER TUBE
TUBE
DEFROST
THERMOSTAT
A97517
Fig. 7--Defrost Thermostat Location
If ANY refi'igerant tubing is buried, provide a 6 in. vertical
rise at service valve. Do NOT bury ref_cigerant tubing lengths
longer than 36 in.
[,.]_LW_i[.]]]
To prevent damage to unit or service valves observe the
following:
• Use a brazing shield.
• Wrap service valves with wet cloth or use a heat sink
material.
Outdoor units may be connected to indoor section using accessory
tubing package or field-supplied rel}igerant grade tubing of con'ect
size and condition. For tubing requirements beyond 50 ft, substan-
tial capacity and performance losses can occur. Follow the
recommendations in the Application Guideline and Service
Manual for Residential Split-System Air Conditioners and Heat
Pumps Using Puron Refi'igerant to minimize losses. Refer to Table
1 for field tubing diameters. Refer to Table 2 for accessory
requirements.
Refrigerant robes and indoor coil nmst be evacuated to 500
microns to minimize contamination and moisture in the system.
OUTDOOR UNIT CONNECTED TO FACTORY-APPROVED
INDOOR UNIT
These outdoor units are carefully evaluated and listed with specific
indoor coils for proper system perfomlance.
IMPORTANT: Do not apply indoor coils which are not factory
approved to these units.
INSTALL ADAPTER TUBE
i. Remove plastic retainer holding outdoor piston in liquid
service valve.
2. Check outdoor piston size with matching number listed on unit
rating plate.
3. Locate plastic bag taped to unit containing adapter robe.
4. Remove teflon washer from bag and install on open end of
liqnid service valve. (See Fig. 8.)
5. Remove adapter robe from bag and connect threaded nut to
liqnid service valve. Tighten nut finger tight and then with
wrench an additional i/2 tum (15 ft-lb). DO NOT OVER-
TIGHTEN!
Table 1--Refrigerant Connections and Recommended Liquid and Vapor Tube Diameters (in.)
TUBE DIAMETER
UNIT CONNECTION DIAMETER TUBE DIAMETER (ALTERNATE)
SIZE
024 3/8 5/8 3/8 5/8 3/4
030 3/8 3/4 3/8 3/4 5/8, 7/8
036 3/8 3/4 3/8 3/4 5/8, 7/8
042, 048 3/8 7/8 3/8 7/8 3/4
060 3/8 7/8 3/8 1- 1/8 7/8
NOTES:
1 Tube diameters are for lengths up to 50 ft For tubing lengths greater than 50 ft horizontal and/or 20 ft vertical differential, consult the Application Guideline and Service
Manual for Residential Split-System Air Conditioners and Heat Pumps Using Puron Refrigerant
2 Refrigerant tubes and indoor coils must be evacuated to 500 microns to minimize contamination and moisture in the system.
3 If required by local codes, Pressure Guard TM kit is available See Product Data Digest for part numbers.
Liquid Vapor Liquid Vapor Vapor
Table 2--Accessory Usage
ACCESSORY APPLICATIONS*
Crankcase Heater Yes Yes
Evaporator Freeze Thermostat Yes No
Compressor Start Assist--Capacitor and Relay Yes Yes
Puron Low-Ambient Pressure Switch Yes No
Wind Baffle See Low-Ambient Instructions No
Support Feet Recommended No
Puron Hard Shutoff TXV Yest Yesl-
Puron Liquid-Line Solenoid Valve for Heating No
* For tubing line sets between 50 and 175 ft, refer to the Application Guideline and Service Manual for Residential SpIit-System Air Conditioners and Heat Pumps using
Puron Refrigerant
t Required for all applications.
REQUIRED FOR LOW-AMBIENT
APPLICATIONS
(BELOW 55°F)
REQUIRED FOR LONG-LINE
(OVER 50 FT)
See Long-Line
Application Guideline
Loading...