Carrier 38YCC Installation And Start-Up Instructions Manual

10 seer split-system heat pump

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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 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(es) with a suitable warning label. Electrical shock can
cause personal injury or death.
INTRODUCTION AND RECOMMENDATIONS
NOTE: In some cases noise has been traced to improper instal-
lation of equipment.
1. Locate unit away from windows, patios, decks, and so forth
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 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. 3.)
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1 4
PC 101
Catalog No. 533-80100
Tab 5a 5a
.
6. Avoid direct refrigerant 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 that comes in direct contact with tubing.
(See Fig. 3.)
8. Ensure that refrigerant tubing insulation is pliable and com-
pletely surrounds vapor tube.
9. When necessary, use hanger straps which are 1 in. wide and
conform to shape of tubing insulation. (See Fig. 3.)
10. Isolate hanger straps from insulation by using metal sleeves
bent to conform to shape of insulation.
Printed in U.S.A.
Form 38YCC-6SI
38YCC, 38YCG, 38YCS
10 SEER Split-System
Fig. 1—Model 38YCC
Fig. 2—Models 38YCG and 38YCS
Pg 1
5-03
Heat Pump
A97005
A98525
Replaces: 38YCC-5SI

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Summary of Contents for Carrier 38YCC

  • Page 1 38YCC, 38YCG, 38YCS 10 SEER Split-System Heat Pump Visit www.carrier.com 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,...
  • Page 2: Installation

    NOTE: Avoid contact between tubing and structure OUTDOOR WALL INDOOR WALL CAULK LIQUID TUBE VAPOR TUBE INSULATION THROUGH THE WALL JOIST HANGER STRAP (AROUND VAPOR INSULATION TUBE ONLY) VAPOR TUBE ″D. (9.53) TIEDOWN ⁄ KNOCKOUTS (2) PLACES 1″ MIN. LIQUID TUBE SUSPENSION A94028 A94199...
  • Page 3: Refrigerant Tubing

    Table 1—Refrigerant Connections and Recommended Liquid- and Vapor-Tube Diameters (In.) LIQUID VAPOR VAPOR (LONG LINE) UNIT SIZE Connection Diameter Tube Diameter Connection Diameter Tube Diameter Connection Diameter Tube Diameter 018, 024 030, 036 042, 048 1-1/8 1-1/8 1-1/8 NOTES: 1. Tube diameters are for lengths up to 50 ft or 20 ft vertical differential. For tubing lengths greater than 50 ft, consult Long Line section of the Application Guideline. 2.
  • Page 4: Connect Control Wiring

    Step 9—Make Electrical Connections Use furnace transformer, fan-coil transformer, or accessory trans- former for control power, 24v/40va minimum. NOTE: Use of available 24v accessories may exceed the mini- mum 40va power requirement. Determine total transformer load- To avoid personal injury or death, do not supply power to unit ing and increase the transformer capacity or split the load with an with compressor terminal-box cover removed.
  • Page 5: Sequence Of Operation

    HEAT TYPICAL HP THERMOSTAT FAN COIL PUMP 24 VAC HOT 24 VAC COM HEAT STAGE 2 COOL/HEAT STAGE 1 INDOOR FAN RVS COOLING EMERGENCY IF AVAILABLE HEAT → Fig. 7—Generic Wiring Diagram (See Thermostat Installation Instructions for wiring specific unit combinations.) A02325 LEGEND 24-V FACTORY WIRING...
  • Page 6 NOTE: If the phasing is incorrect, the contactor will not be H9C1 ® energized. To correct the phasing, interchange any 2 of the 3 power connections on the field side. When thermostat is satisfied, its contacts open, de-energizing the contactor and blower relay. Compressor and motors should stop. NOTE: If indoor unit is equipped with a time-delay relay circuit, the blower runs an additional 90 sec to increase system efficiency.
  • Page 7: Care And Maintenance

    NOTE: Length of defrost cycle is dependent upon length of time CARE AND MAINTENANCE it takes to remove screwdriver from test pins after reversing valve For continuing high performance and to minimize possible equip- has shifted. ment failure, periodic maintenance must be performed on this 7.
  • Page 8 Copyright 2003 CARRIER Corp. • 7310 W. Morris St. • Indianapolis, IN 46231 38ycc6si Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Book 1 4 PC 101 Catalog No. 533-80100 Printed in U.S.A.

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38ycg38ycs

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