30HXA System Charge for Start-Up | Carrier HXC076-186 specification

30HXC UNITS Ð The 30HXC units are shipped from the factory with a full charge of R-134a. Unit should not need to be charged at installation unless a leak was detected in Step 6 Ð Leak Test Unit section on page 26. If dehydration and recharging is necessary, use industry standard practices or refer to Carrier Standard Services Techniques Manual as required.

30HXA UNITS Ð The 30HXA units are shipped with a hold- ing charge of R-134a. The complete charge for the 30HXA, the remote condenser(s), and interconnecting piping must be ®eld supplied.

To charge the 30HXA systems:

1.Add liquid charge into the cooler using the 1¤4-in. Schrader- type ®tting located on the tube going into the bottom of the cooler. This ®tting is located between the elec- tronic expansion valve (EXV) (076-146 units) or the economizer (161-186 units) and the cooler. Add approxi- mately 2 lb/nominal ton (0.9 kg/nominal kW). This amount of charge should be sufficient to allow the unit to start. The approximate system charges are shown in Table 6.

2.Raise the compressor discharge to approximately 125 F (51.7 C) saturated discharge temperature (185 psig [1276 kPa]) by throttling the condenser air (or water) in- take. Add charge until there is approximately 18 to 20 F (10.0 to 11.1 C) of system subcooling (saturated dis- charge temperature − actual temperature entering the EXV).

NOTE: On the units equipped with economizers (30HXA161-186), the EXV is located inside the econo- mizer so the temperature must be measured entering the economizer (tube entering bottom of economizer).

3.Check for a clear sight glass. If the unit is not fully loaded, the sight glass might be ¯ashing. This is normal for a partially-loaded unit.

Table 6 Ð 30HXA System Charge for

Start-Up

UNIT	CIRCUIT A		CIRCUIT B
UNIT	CHARGE		CHARGE
30HXA	CHARGE		CHARGE
30HXA	Lb	Kg	Lb	Kg
	Lb	Kg	Lb	Kg
076	75	34.0	75	34.0
086	94	42.6	80	36.3
096	114	51.7	80	36.3
106	134	60.8	80	36.3
116	137	62.1	95	43.1
126	137	62.1	116	52.6
136	147	66.7	125	56.7
146	161	73.0	132	59.9
161	190	86.2	132	59.9
171	154	69.9	186	84.4
186	186	84.4	186	84.4

30HXA, HXC076-186 specifications

The Carrier 30HXA and 30HXC series is a notable line of chillers designed for commercial applications, providing advanced cooling solutions for various buildings and infrastructures. These models are known for their reliability and efficiency, making them a preferred choice for building managers and facilities engineers.

One of the key features of the Carrier 30HXA and 30HXC series is their use of high-efficiency, variable-speed scroll compressors. This technology allows the chillers to adjust their cooling output based on the actual demand, resulting in significant energy savings, especially during periods of partial load. This responsiveness not only leads to lower operational costs but also reduces wear and tear on the equipment, extending its lifespan.

Another critical aspect of these chillers is their eco-friendly refrigerant options. The 30HXA and 30HXC models utilize R-410A refrigerant, which has a lower environmental impact compared to traditional refrigerants. This commitment to sustainability aligns with modern regulations and climate goals, making these chillers an environmentally responsible choice.

Both series offer a wide range of cooling capacities, from 76,000 to 186,000 BTU/h, catering to various commercial needs. The compact design and modular configurations of these chillers allow for easy installation and integration into existing systems, facilitating retrofits and upgrades without significant disruption.

The 30HXA and 30HXC chillers also feature advanced controls that enhance their operational efficiency. The integrated controls allow for easy monitoring and adjustments, enabling users to optimize performance and minimize energy consumption. Additionally, they can easily interface with building management systems (BMS), providing real-time data and improved operational insights.

Durability is another hallmark of the Carrier 30HXA and 30HXC series. Built with corrosion-resistant materials and designed to withstand harsh weather conditions, these chillers ensure reliable performance in various environments. The robust construction further enhances their longevity, providing consistent cooling solutions for years.

In summary, the Carrier 30HXA and 30HXC series chillers offer advanced technology, eco-friendly refrigerants, energy efficiency through variable-speed compressors, and durable construction. These features come together to provide a reliable and effective cooling solution for a wide range of commercial applications, ensuring comfort and performance while supporting sustainability goals.

Carrier HXC076-186 30HXA System Charge for Start-Up, Unit Circuit a Circuit B Charge 30HXA

Models: 30HXA HXC076-186

Table 6 Ð 30HXA System Charge for

Start-Up

UNIT

CIRCUIT A

CIRCUIT B

CHARGE

30HXA

076

086

096

106

116

126

136

146

186

30HXA, HXC076-186 specifications