4.Replace the upper door and secure it to the unit.

5.Restore power to the unit.

High Efficiency Units (Variable & Fixed Speed) IMPORTANT! This air handler has been designed to give the installer maximum flexibility to optimize system performance, efficiency, and comfort. Because there are so many different ways to set up the air handler it is important to read and follow these directions carefully.

HMG**X1E & HCG**V1E series air handlers use high efficiency circulating air motors that come in two variations and both are controlled differently. The fixed speed motor control board (Figure 16, page 24) controls the torque and the variable speed motor control board (Figure 17) controls the airflow at a constant CFM. Both boards use the same control board.

Before operation, the air handler must be configured to match the unit with the system, system options, and climatic conditions. When configured, the air handler responds directly to the thermostat inputs, as well as the optional humidistat (see page 13). During normal operation, the motor will gradually change speeds during start-up, shut down, when thermostat inputs change, and when the duct static pressure changes (vents closed or opened, filter clogging, etc.). The air handler is configured by setting the selector switches and removing jumper connectors.

Selecting Basic Heating Airflow

Fixed & variable speed motor control boards (Figures 16

&17) contain a set of dip switches for setting the blower speed. For HMG**X1E models, pins 1-4 set the speed for heating. For HCG**V1E models, the A/B switch must be set for the appropriate air handler size (either setting can be used for 48K or 60K BTUH applications).The airflow is set automatically based on the amount of installed heat. For both HMG**X1E & HCG**V1E models, the cooling speed is selected via switches 5,6,7,& 8. To determine the appropriate switch settings for your installation, see Tables 6, 7, 8, or 9 (pages 20 - 22).

Selecting Basic Cooling / Heat Pump Airflow

The basic cooling/heat-pump airflow is controlled by setting switches 5 - 8 on the motor control board (mounted on the blower). All airflows for other modes of operation (except electric heat) are determined by this basic setting. FAN ONLY would deliver 50% of the selected cooling airflow. Table 8 (page 21) lists the basic airflow values versus the airflow selector switch settings and ranges of basic air flow settings recommended for each nominal system capacity.

•When operating in the heat pump mode, a higher basic airflow setting will increase the energy efficiency and capacity but will also decrease the supply air temperature.

•For maximum capacity and energy efficiency, select an airflow at or near the top of the range for that nominal capacity. See Table 8 (page 21).

•For maximum dehumidification, select an airflow near the middle or bottom of the range for that nominal capacity. Additional information on humidity control can be found in the Humidistat and Delay Setting sections.

•For thermostats with a dehumidifier output, use a field supplied wire to connect the thermostat’s dehumidifier output to the terminal marked DHUM. The thermostat should be set so that the DHUM output should be high (energized) when dehumidification is needed. See also Dehumidification Options section.

IMPORTANT! If coil icing is observed, the basic cooling/ heat-pump airflow selected may be too low. Verify the setting selected is within the range shown in Table 8 and that the the system is properly charged.Please refer to the instructions supplied with the outdoor unit.If icing continues to occur, raise the selected airflow one or two steps.

NOTE: Variable speed air handlers with SEER ratings higher than 15 are matched with a 2-stage cooling outdoor unit. They are programmed to operate at 75% of the selected airflow while the system is in the lo-cool mode and 100% of the selected airflow while in hi-cool mode.

Dehumidification Options

(HMG**X1E or HCG**V1E Models Only)

Both motor control boards (Figures 16 & 17, page 24) have a DHUM connection that allows the system to increase the amount of humidity that is removed from the circulating air. This is accomplished by reducing the CFM and allowing the cooling coil to become colder. This will only occur when there is a call for cooling. There are many ways that this can be electrically wired.

1.If the room thermostat incorporates a humidity sensor and DHUM output, connect the DHUM on the thermostat to the DHUM terminal on the motor control board.

2.If using a separate humidistat, connect the DHUM & R terminals on the humidistat to the DHUM & R terminals on the motor control board of the air handler. In this option, the DHUM output of the humidistat must be set to be normally open and closed when there is a call for humidification. See Figure 11.

3.If a humidistat is not available, it is an acceptable option to connect the R & DHUM terminals on the motor control board together with a field supplied wire. This option causes the blower to run at a reduced CFM for 10 minutes after a call for cooling. NOTE: If outdoor unit is a heat pump, connect the O terminal to DHUM.

 

 

 

 

MOTOR

HUMIDISTAT

CONTROL BOARD

 

 

 

 

DHUM

 

 

DHUM

 

 

R

 

 

R

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 11. DHUM Wiring Configuration

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Image 15
Heat Controller HMG**X1E, HMG**F1E, HCG**V1E Dehumidification Options, Selecting Basic Heating Airflow
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HMG**X1E, HCG**V1E, HMG**F1E specifications

The Heat Controller series, comprising models HMG**F1E, HCG**V1E, and HMG**X1E, showcases advanced heating and cooling technologies designed for optimal comfort and energy efficiency in residential and commercial settings. Each model is equipped with a range of features that cater to diverse user needs while maintaining excellent performance.

The HMG**F1E model stands out with its sleek design and compact size, making it ideal for smaller spaces. It utilizes inverter technology, which enables the unit to operate at variable speeds for greater efficiency and reduced energy consumption. This model also comes with a user-friendly remote control, allowing for easy adjustments of temperature settings and operational modes without the need to manually interact with the unit itself. The HMG**F1E is equipped with a filtration system that improves indoor air quality by removing dust and allergens, providing a more comfortable living environment.

In contrast, the HCG**V1E model is designed with versatility in mind, offering both heating and cooling functions. This unit features a programmable thermostat, allowing users to set their preferred temperatures for different times of the day. The HCG**V1E is manufactured with durable materials that ensure longevity and reliability under various weather conditions. Additionally, it provides whisper-quiet operation, ensuring minimal disturbance to indoor activities. The energy-efficient operation and smart climate control technology contribute to significant savings on energy bills.

Finally, the HMG**X1E model is known for its cutting-edge smart technology integration. This model can be connected to smart home systems, enabling users to control the unit from their smartphones or tablets. It features advanced sensors that detect occupancy and adjust heating and cooling accordingly, optimizing energy usage in real-time. The HMG**X1E also incorporates an eco-friendly refrigerant, aligning with modern environmental standards while delivering exceptional performance.

Overall, the Heat Controller series with models HMG**F1E, HCG**V1E, and HMG**X1E redefine comfort and efficiency. With their combination of innovative technologies, user-friendly features, and sustainable designs, they are perfect for anyone seeking reliable temperature control solutions for their spaces.
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