Instruction/ maintenance manual of the product 38YSA Carrier
Go to page of 12
38YSA Split-System Heat Pump Installation and Start-Up Instructions NOTE: Read the entire instruction manual before starting the installation. This symbol → indicates a change since the last issue.
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 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 tube metering devices or pistons. Due to system design, this unit must be installed with a factory-listed indoor section.
For buried-line applications greater than 36 in., consult your local distributor. If refrigerant tubes or indoor coil are exposed to atmosphere, they must be evacuated to 500 microns to eliminate contamination and moisture in the system.
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 warning can result in an electric shock, fire, or death.
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 A97536 24 VAC HOT R G W/W1 Y/Y2 O.
Fig. 10 — Typical 24-v Circuit Connections using Other HP Thermostats with Fan Coils and No Outdoor Thermostat, 1 Outdoor Thermostat, or 2 Outdoor Thermostats A97404 24 VAC HOT R C W2 Y G R W3 W2 G .
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.
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 A97412 24 VAC HOT R C Y G O RVS COOLIN.
WIRING DIAGRAM NOTES: 1. CARRIER THERMOSTAT WIRING DIAGRAMS ARE ONLY ACCU- RATE FOR MODEL NUMBERS BEGINNING WITH TSTA T_____ __ . 2. WIRING MUST CONFORM TO NEC OR LOCAL CODES. 3. SOME UNITS ARE EQUIPPED WITH PRESSURE SWITCH(ES), TEM- PERATURE SWITCH, OR 5-MINUTE COMPRESSOR CYCLE PRO- TECTION.
providing electrical potential to second heater sequencer (if used). If outdoor temperature falls below setting of outdoor thermostat (field-installed option), contacts close to complete circuit and bring on second bank of supplemental electric heat. When thermostat is satisfied, its contacts open, de-energizing contactor and sequencer.
Step 14 — Final Checks IMPORTANT: Before leaving job, be sure to do the following: 1. Securely fasten all panels and covers. 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.
An important point after buying a device Carrier 38YSA (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Carrier 38YSA yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Carrier 38YSA - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Carrier 38YSA you will learn all the available features of the product, as well as information on its operation. The information that you get Carrier 38YSA will certainly help you make a decision on the purchase.
If you already are a holder of Carrier 38YSA, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Carrier 38YSA.
However, one of the most important roles played by the user manual is to help in solving problems with Carrier 38YSA. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Carrier 38YSA along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
