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)1 ton ac deals - CL40 (Units manufactured from May 2009 to present)how much is a outside ac unit - CL60 (Units manufactured from April 2009 to present)how to determine what size ac unit is needed Hold down both SET TEMP buttons (up & down arrows) simultaneously for 3 seconds. CM25 & CMW30 - Swing Inverter, 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.