The 2-way motorized valve motor drives valve open and a spring returns valve to normally closed position (no water flow with unit OFF).

Supply connection at coil will be swage fit for field braze (standard) or union (option). Return connection at coil will be factory brazed if isolation valve only. Addition of any other component will require swage fit for field braze or optional union connection.

Check job specifications for system pressure, pressure drop limitations and flow rate prior to selecting valve package components or valve package size (1/2 in., 3/4 in., etc.).

2-PIPE SYSTEM (One Valve Package) or 4-PIPE SYSTEM (Two Valve Packages) Application:

•2 Pipe — Hydronic Heating Only

•2 Pipe — Hydronic Cooling Only

•2 Pipe — Hydronic Cooling with Total Electric Heat

•4 Pipe — Hydronic Cooling and Heating

NOTE: A 1/4-in. bypass line is included in the piping pack- age when a 2-way valve is specified with a control package containing an automatic changeover device.

a42-4174

MOTORIZED

M

LEGEND

Ball Valve

Motorized 2-Way Valve

Fig. 44 — Two-Way Motorized Control Valve Package

The 2-way motorized valve motor drives valve open and a spring returns valve to normally closed position (no water flow through coil with unit OFF).

The aquastat bleed bypass bleeds a small amount of water from supply to return when control valve is closed (required for system water temperature sensing by aquastat). Aquastat (A) clips on supply line upstream from aquastat bleed bypass (as shown at right). It senses system water temperature to prevent cooling operation with hot water in system piping or heating operation with chilled water in system piping. Additional aquastat required to lock out the optional auxiliary electric heat when hot water in system.

Supply and return connections at coil will be swage fit for field braze (standard) or unions (option).

Check job specifications for system pressure, pressure drop limitations and flow rate prior to selecting valve package components or valve package size (1/2 in., 3/4 in., etc.).

a42-4175

MOTORIZED

M

 

 

BALL VALVE

(1) GATE

 

 

(1) BALL

R

 

(1) 2-WAY MOTORIZED

MOTORIZED

 

COIL

2-WAY VALVE

GATE

M

SHUT OFF

 

A

 

 

S

 

 

BYPASS

 

2-PIPE SYSTEM (One Valve Package) Application:

 

 

 

• 2 Pipe — Hydronic Cooling and Heating

 

BALANCING

BALL VALVE

• 2 Pipe — Hydronic Cooling and Heating with Auxiliary

(2) BALL

 

VALVE

 

Electric Heat

(1) BALANCING

R

 

(1) 2-WAY MOTORIZED

 

NOTES: Additional aquastat required as noted above.

 

 

COIL

 

BALL VALVE

 

M

 

 

S

BYPASS

LEGEND

 

A

 

MOTORIZED

 

 

 

Balancing Valve

 

2-WAY VALVE

 

 

 

 

Ball Valve

 

 

CIRCUIT SETTER

(1) BALL

 

 

 

 

 

Circuit Setter

(1) CIRCUIT SETTER

R

 

Gate Shut Off Valve

(1) 2-WAY MOTORIZED

MOTORIZED

 

 

 

COIL

2-WAY VALVE

BALL VALVE

 

 

M

Motorized 2-Way Valve

 

S

A

 

 

 

 

BYPASS

Fig. 45 — Two-Way Motorized Control Valve Package with Aquastat Bleed Bypass Line

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Carrier 42D, 42C, 42S, 42V specifications A42-4174, A42-4175
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42V, 42D, 42S, 42C specifications

Carrier has established itself as a leader in the HVAC industry by continuously innovating and refining their products. Among their offerings, the Carrier 42D, 42C, 42S, and 42V series stand out for their advanced features, efficient technologies, and user-friendly characteristics.

The Carrier 42D series is known for its robust and energy-efficient design, making it ideal for commercial applications. This series employs a high-performance scroll compressor that enhances efficiency while minimizing noise levels. Equipped with advanced controls, the 42D allows for precise temperature management, ensuring comfort in a variety of environments. Its compact design is another notable feature, allowing for easier installation in constrained spaces while still delivering excellent performance.

Similar to the 42D, the 42C series emphasizes energy efficiency, but it comes with additional features tailored for residential applications. One of the main highlights is its variable-speed compressor technology, which provides exceptional temperature control and reduces energy consumption. This series also includes enhanced filtration systems, ensuring cleaner air quality, which is particularly important for allergy sufferers. Moreover, the 42C's intelligent control systems simplify operation and allow users to customize settings according to their preferences.

The Carrier 42S series focuses on environmentally friendly refrigerants, aligning with global sustainability trends. This series utilizes R-410A refrigerant, which has a lower impact on the ozone layer compared to traditional refrigerants. In addition to its eco-friendly attributes, the 42S boasts features such as an integrated humidity control system, which modulates humidity levels effectively, improving overall indoor air quality.

Finally, the 42V series presents a versatile solution for customers looking for advanced technology and adaptability. With smart connectivity features, the 42V allows for remote monitoring and control via mobile apps, enhancing user convenience. This series is also equipped with a state-of-the-art inverter compressor, which adjusts its speed according to the heating or cooling demand, resulting in significant energy savings.

In summary, the Carrier 42D, 42C, 42S, and 42V series each offer unique features and technological advancements that cater to the diverse needs of users in both residential and commercial settings. With a focus on energy efficiency, user-friendly controls, and environmentally sustainable practices, Carrier continues to set the standard in HVAC solutions.
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