Carrier Performance 12 38YZA- User Manual
Carrier Performance 12 38YZA– User Manual, read for free online in PDF format. We hope this helps you resolve any issues you may have. If you have further questions, please contact us through the contact form.
Table of Contents:
- Page 2 – Fig. 2—Connecting Tubing Installation; Support Feet Snow Stand
- Page 3 – Step 6—Check Indoor Expansion Device; FURNACE COILS; Step 7—Check Defrost Thermostat; Flow arrow must point toward outdoor unit.; Step 9—Make Piping Connections; Fig. 4—Accessory Support Feet; Fig. 6—Positioning of Sensing Bulb; SENSING BULB
- Page 5 – MINUTES
- Page 6 – Fig. 11—Triple Evacuation Method; CONTACTOR
- Page 8 – Step 14—Check Charge; UNIT CHARGE; Fig. 13—Generic Wiring Diagram; FIELD SPLICE CONNECTION; Fig. 14—Defrost Control
- Page 12 – SERVICE TRAINING
38YZA
Deluxe 12 SEER Split-System
Heat Pump with Puron® Refrigerant
Installation and Start-Up Instructions
NOTE:
Read the entire instruction manual before starting the
installation.
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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 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
.
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.
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.
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 accept-
able. 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.
1. 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.
3. Run refrigerant tubes as directly as possible by avoiding
unnecessary turns 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 from insulation by using metal sleeves
bent to conform to shape of insulation.
When outdoor unit is connected to factory-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. Add (or subtract) 0.6 oz/ft of 3/8 in.
liquid line for lengths greater (or less) than 15 ft. For proper unit
operation, check refrigerant charge using charging information
located on control box cover or in the Check Charge section of this
instruction.
IMPORTANT:
Maximum liquid-line size is 3/8-in O.D. for all
residential applications.
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.
Fig. 1—Model 38YZA
A98516
Visit www.carrier.com
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1
4
Tab
5a 5a
PC 101
Catalog No. 533-80083
Printed in U.S.A.
Form 38YZA-4SI
Pg 1
2-03
Replaces: 38YZA-3SI
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Summary
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 presaleliterature. There can be no deviation. Consult the ApplicationGuideline and Service Manual—A...
installed. Use accessory snow stand in areas where prolongedfreezing temperatures are encountered. Refer to Installation In-structions packaged with accessories. Step 6—Check Indoor Expansion Device For proper unit operation and reliability, units must beinstalled with hard shutoff TXV specifically ...
SWEAT CONNECTION To avoid valve damage while brazing, service valves must bewrapped in a heat-sinking material such as a wet cloth. Wrap service valves and filter drier with a wet cloth or heat-sinking material. Braze connections using either silver bearing ornon-silver bearing brazing material. Do ...
