As a rule of thumb, 400 square feet per 12,000 BTUs (12,000 BTUs equals one ton of air conditioning). However, you must account for other factors which will affect the total heat load. Please click the following link to find your cooling need. 3 Years with warranty registration OR 1 Year for unregistered units. Click the following links to view our standard warranty. Classic 10, Office Pro 12, Classic Plus 14, Office Pro 18, Office Pro W20 (115 volt-standard household current) Office Pro 24,Office Pro 36, Office Pro 60, Classic Plus 26 (208/230 volt single phase) Classic 40 (220 volt three phase) Classic 60, Office Pro 63 (460 volt three phase)Length specified is total length in and out of unit. For condenser plenum, 10’ inlet and 10’ outlet = 20 total feet. Each 90 deg bend = approx 8’-10’ of duct. Blocking one duct is not recommended. Too much static pressure can build up and the unit will shut down. We recommend extreme caution when using extension cords.

The following guideline is recommended: It must be safety listed and 3-wire grounding type appliance extension cord. The marked rating of the extension cord should be the same as the voltage requirement and the recommended fuse size on the specification sheet. Note: Before clearing the diagnostic code, be sure to find and correct the problem. For the Office Pro units with the old controller (Units manufactured before April 2007 with a green LED): 1) Unplug the unit and wait for 5 seconds. 2) Push and hold the HRS and MIN buttons simultaneously. 3) Then plug the unit in while still holding the buttons. For Classic Plus units with the old controller (Units manufactured before April 2007 with a green LED): 2) Push and hold both fan speed buttons simultaneously. For units with the new controller (for all Office Pro and Classic Plus units manufactured from April 2007 to present): Press hold COOL ON/OFF and FAN HI/LO simultaneously for 5 seconds. For units with the new controller:

- CL10 (Units manufactured from January 2008 to present) - CL40 (Units manufactured from May 2009 to present) - CL60 (Units manufactured from April 2009 to present)ac unit buzzing noise Hold down both SET TEMP buttons (up & down arrows) simultaneously for 3 seconds.portable ac units 10000 btu CM25 & CMW30 - Swing Inverter,ductless ac units lg 2 Years on the Unit and 3 Years on the Compressor with warranty registration OR 1 Year on the Unit and 3 Years on the Compressor for unregistered units. The compressor adjusts its speed based on the temperature in the room minimizing power consumption. Unlike conventional compressors which cycle on and off repetitively, an inverter compressor has the ability to adjust its speed based on the amount of cooling needed.

This helps eliminate the wear and tear of constant starting and stopping. The pistons in a swing compressor move smoothly, decreasing friction and vibration. It also prevents the leakage of refrigerant gas during compression. CM12 (115 volt-standard household current) CM25 (208/230 volt single phase) CMW30 (208/230 volt single phase) Refer to the following table, "Connecting thermostat to CM12 unit" on the operation manual. Connect RC on the thermostat to RC on the unit, Y on the thermostat to Y on the unit, G on the thermostat to G on the unit. G1- Most of the thermostats do not have Fan Hi/Low button. In this case don't connect G1 and the unit will run at high fan speed. Wall Thermostat Connector NameEach 90 deg bend = approx 8’-10’ of duct Make sure the unit is connected to the right voltage and recommended breaker. Check for power at the receptacle. Inspect and replace fuse on the relay/control board (if blown). Some thermostats require resetting when power is restored after a power interruption.

Check duct for any blockage or excessive kinks. Check wiring connection between Wall mounted Controller (in case of CM25 & CMW30)/ millivolt wall thermostat and the unit. Check for OFF signal input from the fire alarm control panel. On CM25 & CMW30 the Wall mounted Controller will display AL. Ensure the Override (Stop) switch is in the “OPERATE” position. For more specific information please refer to the operation manual. Multi-21 Zone 42,000 BTU 3.5 Ton Ductless Mini Split Air Conditioner with Heat, Inverter, Remote - 208-230-Volt/60Hz Cool or heat 5 designated zones for maximum cost efficiency G10 inverter technology uses less energy to maintain temperature Whisper-quiet 34 dBA operation The Multi-21 5-Zone 36,000 BTU Ductless Mini-Split Air Conditioning System is powered by GREE's energy-efficient G10 inverter and a variable-speed compressor. These units can heat or cool five zones up to 2000 sq. ft. (combined) without distribution boxes.

Our G10 inverter technology saves energy, reduces outdoor noise and keeps room temperature steady by eliminating the harsh starts and stops of conventional systems. The outdoor unit has Gold Fin coil protection to promote energy efficiency and prevent coil corrosion in a corrosive environment. Every GREE Multi wall-mount is energy-efficient, yet powerful enough to keep you comfortable year-round. GREE's whisper-quiet fan technology means you will always have quiet comfort and you can easily manage a variety of useful features with the infrared remote control or a wired tether controller (sold separately). All parts are warranted for a period of five years to the original registered end-user with proof of proper installation. The compressor is warranted for a period of seven years to the original registered end-user with proof of proper installation. A universal piping assembly/line-set (sold separately) is required for installation - be sure to select the appropriate size. System includes a 42,000 BTUH outdoor multi-unit (model# MULTI42HP230V1BO) and five 9000 BTUH vireo wall mount units (model# VIR09HP230V1AH)

Designed to cool or heat up to 2000 sq. ft. of combined space in 5 zones Offers 39,000 BTU cooling and 45,000 BTU heating for dependable climate control DC inverter technology reduces noise and minimizes stop/start 21 SEER rating: estimated annual cooling cost is $505 (based on 9¢/kWh and 2000 annual cooling hours) Each wall-mount unit has 4 fan speeds for customizable airflow Includes 5 infrared remote controls with lockout feature Uses eco-friendly R410-a refrigerant Protected by a 5-year parts warranty and 7-year compressor warranty Universal piping assembly/line-sets (15 ft., 25 ft. or 50 ft.) required for this system: (5) 1/4 in. x 3/8 in. (sold separately) Proper installation requires the use of a state licensed or certified HVAC contractor in order for the manufacturer's limited warranty to apply, please see full warranty statement for details 3 How many square feet does this unit cool ? 2 With this unit , what is the BTU selections for each room j?