Heat Controller, Inc.

INSTALLATION INSTRUCTIONS

Cased/Uncased Coils

6.0 Refrigerant Connections

To prevent refrigerant leak, use proper tools to ensure clean, burr-free cut.

Use brazing shield when welding close to the cabinet surface and wet rag to protect rubber grommet.

Brazing alloy should be at least 5% silver content.

6.1 Flowrator Piston Change

In most applications, there is no need to change the piston (orifice). However, in some applications, changing the piston size is required. If the application requires a different piston/flowrator, change the piston in the distributor of indoor coil before installing the coil. See Table 1 for orifice size.

To change the piston, use following steps:

1.Remove cover panel.

2.Use Two wrenches.

Loosen one turn to release pressure. (High pressure gas)

3.After releasing pressure.

Loosen and carefully pull a part the two fittings to expose piston.

4.Remove factory installed piston and replace with recommended piston from Table 1 as shown in Fig.7.

5.Carefully reassemble assembly. (Hand tighten)

Be sure to use teflon tape on thread for a complete seal.

6.Hand tighten and make sure assembly is properly connected and then torque to 10-30 ft/lb.

NOTE: Be careful not to bend tubing

LIQUID LINE

PISTON

NUT

Fig. 7: Flowrator Piston Change

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Heat Controller CDG SERIES, MDG SERIES installation instructions Refrigerant Connections, Flowrator Piston Change
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CDG SERIES, MDG SERIES specifications

The Heat Controller CDG Series and MDG Series are renowned for their advanced technology and exceptional performance in heating and cooling systems. These series are designed to provide efficient climate control for various applications, making them a popular choice for both residential and commercial spaces.

The CDG Series is particularly noted for its energy efficiency. It utilizes advanced inverter technology, which allows the unit to adjust its cooling and heating output based on the current conditions. This not only ensures consistent comfort levels but also significantly reduces energy consumption. The units are designed to operate quietly, making them ideal for bedrooms and offices where noise can be a concern.

One of the standout features of the CDG Series is the inclusion of advanced air filtration systems. These filters are designed to capture dust, allergens, and other airborne particles, ensuring that the air delivered into living spaces is clean and healthy. This is particularly beneficial for individuals with allergies or respiratory issues.

In contrast, the MDG Series is geared more towards robust performance and reliability. It is engineered to handle larger spaces and more demanding applications. The MDG Series features a heavy-duty construction that withstands harsh weather conditions, making it suitable for both indoor and outdoor installations. Its high-capacity heating and cooling capabilities ensure that even the largest areas can be effectively climate-controlled.

Both series incorporate user-friendly interfaces, allowing for easy operation and customization of settings. Many models come equipped with smart technology that enables remote access and control via mobile apps. This means users can adjust their heating and cooling settings from anywhere, enhancing convenience and flexibility.

Another key characteristic of both the CDG and MDG Series is their commitment to environmental sustainability. These units are designed to minimize greenhouse gas emissions and utilize refrigerants that are more environmentally friendly compared to traditional options. This focus on eco-friendly technology aligns with modern standards and regulations, appealing to environmentally conscious consumers.

In summary, the Heat Controller CDG Series and MDG Series offer a combination of energy efficiency, advanced technology, and robust performance. With features like inverter technology, advanced air filtration, user-friendly interfaces, and environmentally sustainable practices, these series stand out in the competitive heating and cooling market, providing reliable solutions for a wide range of climate control needs.
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