Carrier 50ZHA024-060 instruction manual Wet Coil Pressure Drop, Filter Pressure Drop in. wg

Page 16

Table 9—Wet Coil Pressure Drop

UNIT SIZE

 

 

 

 

 

STANDARD CFM (S.C.F.M.)

 

 

 

 

 

 

600

700

800

900

1000

1100

1200

1300

1400

 

1500

1600

1700

1800

1900

2000

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

024

.027

.034

040

.047

.053

-

-

-

-

 

-

-

-

-

-

-

030

-

.036

.042

.050

.055

.063

.072

.081

-

 

-

-

-

-

-

-

036

-

-

-

.050

.055

.063

.072

.081

.090

 

.097

-

-

-

-

-

042

-

-

-

-

.042

.049

.052

.059

.065

 

.071

.078

.085

.091

-

-

048

-

-

-

-

-

-

.072

.081

.090

 

.097

.108

.120

.129

.139

-

060

-

-

-

-

-

-

-

-

-

 

.071

.078

.085

.091

.098

.114

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

a.Slip the wheel back in the housing with the hub set screw parented in the correct direction.

b.Install the filler panel.

c.Reinsert the motor assembly in the wheel hub and align the mounting legs with the housing mounting hold locations.

d.Tighten the mounting bolts to fasten the motor assembly with the housing.

e.Center the wheel in the housing by sliding it, align the flat end of the shaft with the set screw and tighten the set screw.

f.Slide back the blower housing into the mounting rails in the duct panel and install the mounting bracket back in its position.

g.Install the screws on the external side of the duct panel to fasten duct panel with the housing.

h.Replace the side access panel.

Step 4—Outdoor Coil, Indoor Coil, and Condensate Drain Pan

Inspect the outdoor coil, indoor coil, and condensate drain pan at least once heating and cooling season. Proper inspection and cleaning requires the removal of the unit top. See Unit Top Removal section.

Table 10—Filter Pressure Drop (in. wg)

UNIT

FILTER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SIZE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SIZE

(IN.)

 

500

 

600

 

700

 

800

 

900

 

1000

 

1100

 

1200

 

1300

 

1400

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

024-036

24 x 24

 

0.06

 

0.07

0.08

 

0.08

 

0.09

 

0.09

 

0.09

 

0.10

 

0.11

 

0.12

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

042-060

30 x 30

 

-

 

 

-

 

-

 

-

 

 

 

-

 

 

-

 

 

-

 

-

 

 

 

0.08

 

0.09

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

UNIT

FILTER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SIZE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SIZE

(IN.)

 

1500

 

1600

 

1700

 

1800

 

1900

2000

2100

 

2200

 

2300

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

024-036

24 x 24

 

0.14

 

0.15

 

-

 

 

-

 

 

 

 

-

 

 

-

 

 

 

-

 

 

 

 

-

 

 

 

 

-

 

 

 

042-060

30 x 30

 

0.10

 

0.11

 

0.12

 

0.13

 

0.14

0.15

0.16

0.17

0.18

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Table 11—Accessory Electric Heat Pressure Drop

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(in. wg)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HEATER KW

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

600

 

800

1000

 

1200

 

 

1400

1600

 

1800

 

2000

 

 

2200

 

5-20

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0.06

 

0.08

 

0.10

 

0.13

 

 

0.15

0.18

 

0.20

 

 

0.23

 

 

0.25

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Remove all obstructions (including weeds and shrubs) that inter- fere with the airflow through the outdoor coil. Straighten bent fins with a fin comb. If coated with dirt or lint, clean the coils with a vacuum cleaner, using a soft brush attachment. Be careful not to bend the fins. If coated with oil or grease, clean the coils with a mild detergent-and-water-solution. Rinse coils with clear water, using a garden hose. Be careful not to splash water on motors, insulation, wiring or air filter(s). For best results, spray outdoor-

coil fins from inside to outside the unit. On units with an outer and inner outdoor coil, be sure to clean between the coils. Be sure to flush all dirt and debris from the unit base.

Inspect the drain pan and condensate drain line when inspecting the coils. Clean the drain pan and condensate drain by removing all foreign matter from the pan. Flush the pan and drain tube with clear water. Do not splash water on the insulation, motor, wiring, or air filter(s). If the drain tube is restricted, clear it with a ‘‘plumbers snake’’ or similar probe device. Ensure that the auxiliary drain port above the drain tube is also clear.

Step 5—Outdoor Fan

UNIT OPERATIONAL HAZARD

Failure to follow this caution may result in damage to unit components.

Keep the Outdoor fan free from all obstructions to ensure proper cooling operation. Never place articles on top of the unit.

1.Shut off unit power supply and install lockout tag.

2.Remove outdoor-fan assembly (grille, motor, motor cover, and fan) by removing screws and flipping assembly onto unit top cover.

3.Loosen fan hub setscrews.

4.Adjust fan height as shown in Fig. 12 or 13.

5.Tighten setscrews.

6.Replace outdoor-fan assembly.

Step 6—Electrical Controls and Wiring

Inspect and check the electrical controls and wiring annually. Be sure to turn off the electrical power to the unit and install lockout tag.

Remove the top panel to locate all the electrical controls and wiring. Check all electrical connections for tightness. Tighten all screw connections. If any smoky or burned connections are noticed, disassemble the connection, clean all the parts, restrip the wire end and reassemble the connection properly and securely.

3.125 in.

C00021

Fig. 12—Outdoor-Fan Adjustment (024–048 Size)

Check to ensure no wires are touching refrigerant tubing or sharp sheet metal edges. Move and secure wires to isolate from tubing and sheet metal edges.

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Contents Table of Contents Safety ConsiderationsIntroduction Unit Base Dimensions, 50ZHA024-060 Unit Damage Hazard Unit SpecificationsProvide for Condensate Disposal Physical Data Install Electrical ConnectionsHIGH-VOLTAGE Connections PRE-START-UP SizeRequired Subcooling Required Liquid Line TemperatureRequired Subcooling F C Start-Up Cooling Section and Make Adjustments START-UPCheck for Refrigerant Leaks Refrigerant ChargeFor 208/230-V Blower Motors Indoor Airflow and Airflow AdjustmentsSize Rated Airflow High Airflow Typical Unit Electrical Diagram Sizes A05200 Accessory Electric Heater Wiring Electrical Data-50ZHA Unit Controls HIGH-PRESSURE Relief ValveSequence of Operation FAN OperationCooling Charging Chart MaintenanceFIRE, EXPLOSION, Electrical SHOCK, CUT HAZ- ARD Air FilterUnit Top Removal Outdoor-Coil Side Indoor Blower and MotorWet Coil Pressure Drop Accessory Electric Heat Pressure Drop In. wgFilter Pressure Drop in. wg Troubleshooting START-UP ChecklistTypical Heat Pump Operation, Heating Mode Troubleshooting-Cooling and Heating Symptom Cause RemedyII. PRE-START-UP Preliminary InformationIII. START-UP

50ZHA024-060 specifications

The Carrier 50ZHA024-060 is a remarkable rooftop unit designed for commercial applications, providing both cooling and heating solutions in a compact and efficient manner. Known for its reliability and advanced engineering, this model is ideal for businesses seeking to optimize indoor comfort while maintaining energy efficiency.

One of the key features of the 50ZHA unit is its advanced scroll compressor technology. This innovation not only ensures quiet operation but also offers superior efficiency, reducing operational costs. The unit is designed to deliver a wide range of capacity options, from 24,000 to 60,000 BTU/h, making it versatile for various building sizes and requirements.

The 50ZHA series employs a microprocessor-based control system that enhances user convenience and operational efficiency. This smart technology enables precise temperature control, scheduling, and diagnostics. Furthermore, it offers compatibility with advanced building management systems, allowing for seamless integration into modern HVAC setups.

Energy efficiency is a hallmark of the Carrier 50ZHA024-060, which is equipped with environmentally friendly refrigerants that meet current regulatory standards. This commitment to sustainability is further emphasized by its exceptional SEER and EER ratings, indicating lower energy consumption without compromising performance.

In terms of construction, the 50ZHA series features a robust design with corrosion-resistant materials, ensuring durability even in harsh environmental conditions. The unit’s compact rooftop design simplifies installation and reduces the footprint, making it an excellent choice for urban areas where space is limited.

Moreover, the Carrier 50ZHA models are equipped with advanced filtration systems that improve indoor air quality by minimizing airborne contaminants. This is particularly beneficial for commercial spaces, where maintaining a healthy environment is crucial for employee productivity and wellbeing.

The 50ZHA024-060 also offers various customizable options, including economizers for increased fresh air intake and enhanced humidity control features. These options allow businesses to tailor their HVAC solutions to specific operational needs, ensuring optimal comfort year-round.

In summary, the Carrier 50ZHA024-060 is an exceptional rooftop unit that combines advanced technology, energy efficiency, and user-friendly controls. Its sturdy construction, along with a range of customizable features, makes it a leading choice for commercial HVAC applications, ensuring sustained performance and comfort in diverse settings.
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