ÐCompressor Crankcase Heat | Carrier 38CKB guide

CONNECT CONTROL WIRING Ð Route 24-v control wires through control wiring grommet and connect to brown and blue pigtails supplied in unit splice box. (See Fig. 5.)

Use furnace transformer, fan-coil transformer, or accessory trans- former for control power, 24-v/40va minimum.

NOTE: Use of available 24-v accessories may exceed the mini- mum 40-va power requirement. Determine total transformer load- ing and increase the transformer capacity or split the load with an accessory transformer as required.

Step 6ÐCompressor Crankcase Heat

When equipped with a crankcase heater, energize heater a mini- mum of 24 hrs before starting unit. To energize heater only, set thermostat to OFF position and close electrical disconnect to outdoor unit.

A crankcase heater is required if the refrigerant tubing is longer than 50 ft (15.24m).

Step 7ÐInstall Electrical Accessories, If Any

Refer to the individual instructions packaged with the kit or accessory when installing.

Step 8ÐStart-Up and Check Charge

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.

·In 3 phase application, incorrect phasing will cause reverse rotation, resulting in elevated noise levels, equalized pres- sures and reduced current draw. Correct by reversing power connection L1 and L2 on contactor.

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.

·Front seating service valves are equipped with Schrader valves.

Do not vent refrigerant to atmosphere. Recover during system repair or final unit disposal.

1.Fully back seat (open) liquid and vapor tube service valves.

2.Unit is shipped with valve stem(s) front seated and caps installed. Replace stem caps after system is opened to refrig- erant flow (back seated). Replace caps finger-tight and tighten additional 1/6 turn with wrench.

3.Close electrical disconnects to energize system.

4.Set room thermostat at desired temperature. Be sure set point is below indoor ambient temperature.

5.Set room thermostat at COOL and fan switch at FAN or AUTO, as desired. Operate unit for 15 minutes. Check system refrigerant charge.

6.Factory charge is shown on unit rating label. Adjust charge by following procedure shown on charging tables located on unit.

Step 9ÐLeave User's Manual with Owner

For continued high performance and to minimize possible equip- ment failure, periodic maintenance MUST be performed on this equipment.

Leave User's Manual with owner. Explain system operation and periodic maintenance requirements outlined in manual. Frequency of maintenance may vary depending on geographic areas, such as coastal applications which require more frequent maintenance.

38CKB specifications

The Carrier 38CKB is a cutting-edge air conditioning unit designed to offer optimal cooling and energy efficiency for both residential and commercial applications. Renowned for its robust construction and advanced technology, the 38CKB stands out as an excellent choice for customers seeking reliability and performance.

One of the standout features of the Carrier 38CKB is its high Energy Efficiency Ratio (EER), which translates to lower operating costs and reduced energy consumption. This unit is designed with the environment in mind, helping users minimize their carbon footprint while enjoying the comfort of a cool indoor environment. The system utilizes a high-efficiency scroll compressor that operates quietly and smoothly, further enhancing the user experience.

The 38CKB incorporates a variety of innovative technologies that contribute to its superior performance. Among these is the variable-speed fan motor, which can adjust its operation based on the cooling needs of the space. This means that the system not only delivers effective cooling but also does so with maximum efficiency, reducing wear and tear and extending the lifespan of the unit.

In terms of design, the 38CKB features a compact and aesthetically pleasing exterior, making it suitable for installation in diverse settings. The unit is equipped with a durable cabinet that ensures long-term reliability against environmental challenges, including weather and outdoor conditions. Additionally, the unit can be easily serviced, as it provides convenient access to critical components for maintenance and repairs.

Safety and control features are also prominent in the 38CKB. It is equipped with advanced diagnostic capabilities that alert users to any potential issues, allowing for proactive maintenance and minimizing downtime. Moreover, Carrier offers a range of smart thermostats compatible with this unit, enabling users to manage their cooling systems remotely, providing convenience and customizable comfort.

Overall, the Carrier 38CKB emerges as a versatile air conditioning solution, catering to the needs of various users with its blend of efficiency, innovative technology, and user-friendly features. Whether for home use or commercial spaces, the 38CKB is engineered to deliver reliable performance while emphasizing energy savings and environmental responsibility.