Comfort-Aire ME PREMIER Two-Stage SERIES Water Source Heat Pump

The  (ME) Premier Two-Stage Series showcases superb efficiency ratings, quiet operation, and application flexibility.
The ME surpasses ASHRAE 90.1 efficiency standards and utilizes R-454B low Global Warming Potential (GWP) refrigerant, setting a high standard for eco-friendly performance. 

The ME is Energy Star certified due to its innovative and environmentally conscious design.

Available in sizes 2 tons (7.0 kW) through 6 tons (21.1  kW) with multiple cabinet options (vertical up flow, vertical downflow, and horizontal) the ME offers a wide range of units for most any installation. 

The ME Series has an extended range refrigerant circuit, capable of ground loop (geothermal) applications as well as open loop applications. 
Some of the features of the innovative ME series include: 
ultra-efficient two-stage unloading scroll compressor, EC variable fan motor, microprocessor controls, galvanized steel cabinet construction, corrosive resistant stainless-steel drain pan, and acoustic type fiber insulation are just some of the features of the innovative MARS ME Series.

Recent EPA mandates require an industry transition to low-GWP refrigerants, such as R-454B which is a gas that is classified as having low-toxicity, low flammability rating. 
Due to these characteristics, R-454B systems charged with over 62 ounces of refrigerant must contain an integrated Refrigerant Detection System (RDS).
In the unlikely event of a system-refrigerant leak, the RDS shuts down compressor operation and runs the unit blower motor to disperse any concentration of leaked refrigerant in compliance with UL 60335-2-40 safety standards.  ME products, only the 5- and 6-ton sizes (060 and 072) are required to have the RDS and the feature is optional on all other sizes. 

Double isolation compressor mounting system makes the ME one of the quietest units on the market. 
Compressors are mounted using specially engineered sound tested EPDM grommets to a heavy gauge mounting plate, which is then isolated from the cabinet base with EPDM grommets to minimize vibration transmission and maximize sound attenuation. 

Multiple removable access panels and an easily accessible control box make installation and maintenance user friendly. 

Options such as coated air coil, internal variable speed pump, modulating water valve, and high efficiency MERV rated air filters allow for customizable design solutions.

Intelligent communicating controls provide technicians an interface into the operation of the system in real time without the need for hard tooling. 
On-board advanced controls communicate the key operating system temperatures allowing technicians to startup, commission, and service equipment with the Wireless Service Tool. 
Communicating controls also enable the functionality to make system adjustments and capture operating conditions at time of fault. 
The data is presented in a user-friendly format, enhancing the overall usability of the experience.
Variable Water Flow represents a major advancement in water flow system management efficiency. 
Variable Water Flow not only builds major water circulation components into the unit for a clean installation, it also intelligently varies water flow to minimize pump energy consumption and improve system reliability.

FEATURES
Sizes 024 (2 ton, 7 kW) through 072 (6 tons, 21.1 kW)
Exceeds ASHRAE 90.1 efficiency standards
Environmentally-friendly R-454B low-GWP refrigerant
Refrigerant Detection System (RDS) (mandatory on sizes 060 and 072, optional feature for sizes 024-048)
Intelligent variable speed Constant Volume (CV) EC blower motors for precise airflow control and soft-start feature 
Part-load operation significantly lowers annual operating costs
Galvanized-steel cabinet construction with Bright White polyester powder coated finish and stainless-steel access panels
Sound-absorbing glass-fiber insulation
Unique double-isolation compressor mounting with vibration isolation for quieter operation
Insulated divider and separate compressor/air-handler compartments
TXV metering device 
Field-convertible supply-air arrangement (horizontal configurations only) 
Unit Performance Sentinel performance-monitoring system
Eight standard safety features
Easy-to-clean rust-prohibitive stainless-steel drain pans
DXM2.5 Advanced Communicating Controls:– Connect directly to the system with a Wireless Service Tool– Provides real-time unit operating conditions– Reduces startup, commissioning, and service time by providing key system temperatures electronically– Captures operating conditions in the event of a safety shutdown
Anti-short cycle and over/under-voltage protection
Easy-access control box
High-pressure, loss-of-charge, and condensate-overflow protection
LED fault and status indication at controller
Tin-plated air coils for added protection from formicary corrosion (060 - 072)
Aluminum Microchannel air coils for added protection and improved efficiency (024 - 048)
Extended-range insulation for geothermal applications
Return air filter frames for 2-inch MERV 11 filter

OPTIONS
Corrosion-resistant cupro-nickel water-heat exchanger
Domestic Hot Water Generator (HWG)
Variable Water Flow unit-integrated variable speed water pump
Variable Water Flow unit-integrated modulating water valve for maximum water-flow control (replaces traditional motorized water valve and autoflow regulator)
Factory-installed compressor soft starter to reduce inrush currents for more efficient startups
Integrated power disconnect

ACCESSORIES
Wide variety of thermostat options to meet your application needs
Auxiliary electric heaters