37MARA R454B Heat Pump & 45MBDAQ Ducted Systems

Carrier Ductless Heat Pump 37MARA 

INDUSTRY LEADING FEATURES / BENEFITS A PERFECT BALANCE BETWEEN BUDGET LIMITS, ENERGY SAVINGS AND COMFORT 

The 37MARA series ductless system is a matched combination of an outdoor condensing unit and an indoor fan coil unit connected only by refrigerant tubing and wires. 
The ductless system permits creative solutions for design problems such as: 
• Add-ons to current space (an office or family room addition) 
• Special space requirements 
• When adding air conditioning to spaces that are heated by hydronic or electric heat and have no ductwork 
• Historical renovations or any application where preserving the look of the original structure is essential. Advanced system components incorporate innovative technology to provide reliable cooling and heating performance at low sound levels. 
Inverter Technology 
The inverter driven compressor is designed to run at various input power frequencies (Hz) which controls the compressor’s motor speed. 
Even Temperature 
The control package, including the inverter, monitors the outdoor and indoor temperatures as they relate to the selected indoor set point and adjusts the compressor speed to match the load and keep the system operating continuously rather than cycling and creating temperature swings. This translates to higher comfort levels for the occupants. 
Rapid Pull Down/Warm-Up
Comfort is increased by the inverter system’s ability to ramp up the compressor speed enabling the system to reach the user selected room temperature set point quicker. 
Humidity Control – Running the system for longer periods and continuously varying the compressor speed enhances the humidity control. 
Individual Room Comfort
Maximum comfort is provided because each space can be controlled individually based on the usage pattern. 
Low Sound Levels 
When noise is a concern, ductless systems are the answer. When sound ordinances and proximity to neighbors demand quiet operation, the 37MARA unit is the right choice. With the inverter technology, these units run at lower speeds most of the time resulting in reduced sound levels. 
Inverter Technology Enhanced Economical Operation
Ductless systems are inherently economical to operate. Individual rooms are heated or cooled only when required, and since the air is delivered directly to the space, there is no need to use additional energy to move the air in the ductwork. This economical operation is enhanced further when the inverter system output matches the load resulting in a more efficient system. 
Easy-To-Use Controls
The systems have microprocessor-based controls which provide the ultimate in comfort and efficiency. The user friendly wired and wireless remote controls provide the interface between the user and the unit. 
Secure Operation
If security is an issue, outdoor and indoor units are connected only by refrigerant piping and wiring to prevent intruders from crawling through ductwork or wall openings. In addition, since the 37MARA can be installed close to an outside wall, coils are protected from vandals and severe weather. 
Fast Installation
This compact ductless system is simple to install. Only wires and piping need to run between the indoor and outdoor units. These units are fast and easy to install ensuring minimal disruption to customers in homes or the workplace. This makes the 37MARA systems the equipment of choice for retrofit applications. 
Simple Servicing and Maintenance
Removing the top panel of the outdoor unit provides immediate access to the control compartment, providing the service technician access to the diagnostic components to facilitate the troubleshooting process. In addition, the draw-thru design of the outdoor unit means that dirt accumulates on the outside surface of the coil. Coils can be cleaned quickly from the inside using a pressure hose and detergent. On the indoor units, service and maintenance expense is reduced due to readily accessible filters. Also, error codes are displayed to alert the user to certain system malfunctions 
Built-in Reliability 
Ductless system indoor and outdoor units are designed to provide years of trouble-free operation. Both the indoor and outdoor units are well protected. Whenever the microprocessor detects abnormal conditions, the unit stops and an error code appears. Inverter systems provide additional reliability due to the soft start. This refers to the ability of the inverter to start the compressor motor using reduced voltage and reduced current. This feature is beneficial from an electrical standpoint (eliminates current spikes) as well as an overall reliability standpoint due to reduced stress on all associated system components. 
Agency Listings
All systems are listed with AHRI (Air conditioning, Heating, and Refrigeration Institute) and are CSA certified per UL1995 standard.

45MBDA Ducted Air Handler System

The 45MBDA series ducted systems are a matched combination of an outdoor condensing unit and an indoor fan coil unit connected only by refrigerant tubing and wires.
The in or above ceiling fan coils are ideal for retrofit or modernization projects where a false ceiling is available. 
This selection of fan coils permits inexpensive and creative solutions to design problems such as:
• Add-ons to current space (an office or family room addition)
• Special space requirements
• When changes in the load cannot be handled by the existing system
• Historical renovations or any application where preserving the look of the original structure is essential.
The ideal complement to your ducted system when it is impractical or prohibitively expensive to use ductwork. 
These compact indoor fan coil units take up very little space in the room and do not obstruct windows. 
Advanced system components incorporate innovative technology to provide reliable cooling performance at low sound levels.
ECCENTRIC FAN DESIGN
New eccentric fan design improves the airflow at the air outlet, resulting better performance.
SLIM DESIGN
The industry lowest height is designed to be fitted into tight roof spaces.
FLEXIBLE AIR INTAKE
The frame size of air inlet in rear is the same. It’s very easy to switch to match different applications.
BUILT-IN DRAIN PUMP(OPTIONAL)
The built-in drain pump can lift condensing water up to 29.5" (750mm).
EASY TO CLEAN
You can pull out the filter from the field installed Return air filter grille for easy replacement.
LOW SOUND LEVELS
When noise is a concern, the ductless systems are the answer.
The indoor units are whisper quiet. There are no compressors indoors, either in the conditioned space or directly over it, and there is none of the noise usually generated by air being forced through ductwork.
SECURE OPERATION
If security is an issue, outdoor and indoor units are connected only by refrigerant piping and wiring. In addition, since outdoor units can be installed close to an outside wall, coils are protected from vandals and severe weather.

FAST INSTALLATION
This compact ducted system is simple to install. A mounting bracket is standard with the indoor units and only wire and piping needs to run between indoor and outdoor units. These units are fast and easy to install ensuring minimal disruption to customers in the home or workplace. This makes this systems equipment of choice, especially in retrofit situations.
BUILT-IN RELIABILITY
Ductled system indoor and outdoor units are designed to provide years of trouble-free operation.
The condensing units on heat pumps are protected by a three-minute time delay before the compressor starts the over-current protection and the high temperature protection.
ECONOMICAL OPERATION
The ductless system design allows individual room heating or cooling when required. There is no need to run large supply-air fans or chilled water pumps to handle a few spaces with unique load patterns. In
addition, because air is moved only in the space required, no energy is wasted moving air through ducts.
EASY-TO-USE CONTROLS
The in-ceiling cassette has microprocessor-based controls to provide the ultimate in comfort and efficiency. The user friendly wireless remote control provides the interface between user and the unit.
SIMPLE SERVICING AND MAINTENANCE
Removing the top panel on outdoor units provides immediate access to the control compartment, providing a service technician access to check unit operation. In addition, the draw-thru design of the outdoor section
means that dirt accumulates on the outside surface of the coil. Coils can be cleaned quickly from inside using a pressure hose and detergent.
On all indoor units, service and maintenance expense is reduced due to easy-to-use cleanable filters. In addition, these cassette systems have extensive self-diagnostics to assist in troubleshooting.
WHOLE AREA HOUSE COMFORT
Maximum comfort is provided because each space can be controlled by a single control. Ducted to each room of the area. In addition, year-round comfort can be provided with heat pumps.
FACTORY INSTALLED CONDENSATE LIFT PUMP
Customizing these ductless systems to your application is easily accomplished. The factory installed condensate lift pump on the cassette fan coil unit provides installation flexibility.

SAFETY FEATURES
Compressor three-minute delay at restart Compressor functions are delayed for up to ten seconds upon the first startup of the unit, and are delayed for up to three minutes upon subsequent unit restarts.
Automatic shutoff based on discharge temperature If the compressor discharge temperature exceeds a certain level for nine seconds, the compressor ceases operation.
Inverter module protection The inverter module has an automatic shutoff mechanism based on the unit’s current, voltage, and temperature. If automatic shutoff is initiated, the corresponding error code is displayed on the indoor unit and the unit ceases operation.

Indoor fan delayed operation
• If the unit is in heating mode, the indoor fan is regulated by the anticold wind function.
Compressor preheating
Preheating is automatically activated when T4 sensor is lower than setting temperature. 
When T1-Tsc is higher than 6.3°F, the fan speed is 100%.
Sensor redundancy and automatic shutoff
• If one temperature sensor malfunctions, the air conditioner continues operation and displays the corresponding error code, allowing for emergency use.
• When more than one temperature sensor is malfunctioning, the air conditioner ceases operation.

Requires wired or wireless CONTROLLER
AGENCY LISTINGS
All systems are listed with AHRI (Air Conditioning, Heating & Refrigeration Institute), and ETL.
FCC
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

FOR CLASS B DIGITAL DEVICE
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules.
These limits are designed to provide reasonable protection against harmful interference in a residential installation. 
This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions may cause harmful interference to radio communications. However, there is no guarantee
that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna
• Increase the distance between the equipment and the receiver
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for assistance.
MODIFICATION
Any changes or modifications not expressly approved by the grantee of this device could void the user’s authority to operate this device.