7.Remove the liquid lines by breaking the silver-soldered joints at the cooler liquid line nozzles.

8.On 30GTN,GTR and 30GUN,R 080-110 and 230B-315B units, remove the vertical support(s) under the condenser coil in front of the cooler. Provide temporary support as needed. Save all screws for reinstallation later.

9.Remove the screws in the cooler feet. Slide the cooler slightly to the left to clear the refrigerant tubing. Save all screws.

Removing the cooler can be accomplished in one of 2 ways, depending on the jobsite. Either continue sliding the cooler to- ward the end of the unit opposite the tubing and carefully re- move, or pivot the cooler and remove it from the cooler side of the unit.

REPLACING COOLER — To replace the cooler:

1.Insert new cooler carefully into place. Reattach the screws into the cooler feet (using saved screws).

On 30GTN,GTR and 30GUN,GUR080-110 and 230B- 315B units, reattach the 2 vertical supports under the condenser coil in front of the cooler using screws saved.

2.Replace the liquid lines and solder at the cooler liquid line nozzles.

3.Rebolt the suction flanges onto the cooler head using bolts saved during removal. Use new gaskets for the suc- tion line flanges. Use compressor oil to aid in gasket seal- ing and tighten the suction flange bolts to 70 to 90 ft-lb (94 to 122 N-m).

NOTE: The suction flange has a 4-bolt pattern. See Carrier specified parts for replacement part number, if necessary.

4.Using adhesive, reinstall the cooler insulation on the re- frigerant connection end of the cooler.

5.Reinstall the thermistors. Refer to Thermistors section on page 59, and install as follows:

a.Apply pipe sealant to the 1/4-in. NPT threads on the replacement coupling for the fluid side, and install it in place of the original.

Do not use the packing nut to tighten the coupling. Damage to the ferrules will result.

b.Reinstall thermistor T1 well, and insert thermistor T1 into well.

c.Install thermistor T2 (entering fluid temperature) so that it is not touching an internal refrigerant tube, but so that it is close enough to sense a freeze condition. The recommended distance is 1/8 in. (3.2 mm) from the cooler tube. Tighten the pack- ing nut finger tight, and then tighten 11/4 turns more using a back-up wrench.

6.Install the cooler heater and conduit (if equipped), con- necting the wires as shown in the unit wiring schematic located on the unit.

7.Close the air vent at the top of the cooler, and close the drain on the bottom of the cooler near the leaving fluid outlet. Both the drain and the air vent are located on the leaving fluid end of the cooler. See Fig. 24.

8.Reconnect the cooler fluid piping and strainer, and open the shutoff valves (if installed). Purge the fluid of all air before starting unit.

9.Open the discharge service valves, close the circuit break- ers, and open the liquid line service valves for the compressors.

SERVICING THE COOLER — When cooler heads and par- tition plates are removed, tube sheets are exposed showing ends of tubes.

Certain tubes in the 10HB coolers cannot be removed. Eight tubes in the bundle are secured inside the cooler to the baffles and cannot be removed. These tubes are marked by a dimple on the tube sheet. See Fig. 25. If any of these tubes have developed a leak, plug the tube(s) as described under Tube Plugging section on page 55.

LIQUID

CONNECTION

Fig. 24 — Cooler Thermistor Locations

54

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Image 54
Carrier Air Conditioner specifications Cooler Thermistor Locations
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Air Conditioner specifications

Carrier Air Conditioners have long been synonymous with reliability and innovation in climate control. Founded by Willis Carrier, the inventor of modern air conditioning, the brand has continuously set industry standards through state-of-the-art technologies and features designed to enhance indoor comfort.

One of the standout features of Carrier air conditioners is their energy efficiency. Many models are equipped with advanced inverter technology, allowing the compressor to adjust its speed based on the cooling demand. This results in decreased energy consumption, which not only reduces utility bills but also lessens the environmental impact. Recognizing the importance of sustainable practices, Carrier has integrated eco-friendly refrigerants into their systems, further promoting energy-efficient operations.

Carrier also emphasizes user comfort through its variable speed systems. These systems maintain consistent temperatures while minimizing temperature fluctuations, ensuring an even distribution of cool air throughout the home. Additionally, many Carrier models come with advanced air filtration systems, designed to capture allergens, dust, and other particulates, thereby improving indoor air quality.

The smart technology featured in Carrier air conditioners plays a key role in modern convenience. Many units are compatible with smart home systems, allowing users to control settings remotely via smartphones or voice-activated devices. With features like programmable thermostats, users can easily set cooling schedules to match their lifestyle, ensuring comfort while maximizing energy savings.

Durability and noise reduction are also central to the Carrier brand. Many models are designed with sound-dampening features, making them some of the quietest units on the market. This is particularly advantageous for residential use, where noise can disrupt daily activities and sleep.

In terms of design, Carrier air conditioners come in various styles and capacities to suit a wide range of spaces, from compact apartment units to large central systems for sprawling homes. Their extensive warranty and service offerings further reinforce Carrier’s commitment to customer satisfaction.

In conclusion, Carrier air conditioners represent a perfect blend of cutting-edge technology, energy efficiency, and user comfort. Their emphasis on sustainability and smart features positions them as a leading choice for homeowners seeking reliable and innovative climate control solutions. Whether for cooling a small room or an entire house, Carrier remains a trusted name in air conditioning.
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