OWNER’S MANUAL Installation, Operation, and Service Instructions Version 1.1 Freshman Series Dehumidification Classroom Air Handler www.changeair.com This manual contains instructions for installation and operation of your unit. Keep it in a safe place for ready reference.
Owner’s Manual OWNER’S MANUAL INSTALLATION, OPERATION, AND SERVICE INSTRUCTIONS Identification and Warranties Unit Inspection Safety Labeling Warranties 3-4 3 3 4 General Preventative Maintenance General Preventative Maintenance Filter Maintenance Removing Supply Fan(s) Removing Intake Fan(s) Cleaning Supply and Intake Fan(s) Coil Maintenance 5-7 5 5 6 6 7 7 Installation Guide General Assembly and Installation Electrical Connections Wall Sleeve Exterior Louver Relief Damper Rear Standoff (RSO) Top Plenu
Owner’s Manual Identification Unit Inspection Please keep this page for future reference Inspected For Freight Damages You have just purchased a Change’Air Freshman Series Dehumidification Air Handling Unit. This design is certified by the Canadian Standards Association (CSA) and bears the label indicating it has been tested to the current safety standards for both the United States and Canada.
Owner’s Manual Warranties LIMITED STANDARD PARTS ONLY WARRANTY (14 months) This Change'Air Products and Services Ltd. (Change'Air or Change'Air USA) product is warranted to the original purchaser to be free from defects in material and workmanship under normal use and maintenance, consistent with Change'Air's instructions or recommendations for use and maintenance, for a period of 14 months from shipping date.
LIMITED WARRANTY LIMITED STANDARD PARTS ONLY WARRANTY (14 months) This Changeair product is warranted to the original purchaser to be free from defects in material and workmanship under normal use and maintenance, consistent with Changeair instructions or recommendations for use and maintenance, for a period of 14 months from shipping date.
No claim or demand may be asserted against Changeair or its employees, agents, directors, officers, representatives and/or suppliers hereunder unless the injury, loss or damage giving rise to such claim or demand is sustained within the applicable warranty period referred to above and unless such claim or demand is first asserted within twelve months after the injury, loss or damage has occurred.
Owner’s Manual General Preventative Maintenance Cleaning your vertical classroom unit: By performing proper preventative maintenance your unit will operate economically and dependably. Instructions for basic maintenance are found below. Exterior WARNING Annually or as needed, thoroughly clean cabinet exterior using a soft absorbent cloth, mild soap and water and/or non abrasive non-acidic cleaner. Interior Before beginning with any preventative maintenance, you MUST follow these safety precautions.
Owner’s Manual Removing Supply Fan(s) WARNING A qualified service technician should perform the following. Remove SUPPLY FAN MOTOR(s) as follows. 1. 2. 3. 4. 5. 6. Replace fan assembly in track and re-secure with fastening screws. 7. Replace electrical wires. 8. Close service panels and lock with key, turn electrical power ON, and test operation of the unit. Turn OFF electrical supply to the unit. Open front service panels of unit using key provided. Disconnect the wire harness running to the fan motor.
Owner’s Manual Cleaning Supply and Intake Fans 1. 2. 3. 4. 5. Remove Fan from unit (Refer to Pg 6) Take a brush or similar cleaning tool and clean blades of fan to remove built up attached dirt. Use a vacuum or compressed air and clean entire fan including the blades. Use SAE 20 non-detergent oil on the Standard Motor requiring oiling. Replace fan in unit (Refer to Pg 6) CAUTION WEAR EYE PROTECTION WHEN WORKING WITH COMPRESSED AIR Standard Motor Fan Assembly Fig.
Owner’s Manual GENERAL ASSEMBLY AND INSTALLATION INSTRUCTIONS It is important to read and understand the instructions outlined in this document, as well as any job specific documentation provided in the Information Package before proceeding with the installation. Care should be taken to protect the painted finish when handling the unit and accessories. Warning: Classroom Air Handlers weigh anywhere from 420lbs to 1070lbs and may be heavy.
Owner’s Manual Wall Sleeve Wall sleeves are typically shipped knocked down and must be field assembled. Before proceeding, the wall opening must be prepared in accordance to the installation drawings, relative to the final installed position of the unit. It will likely be necessary to provide a support header across the top of the opening to comply with local building code requirements. Tip: DO NOT install the exterior louver until after the Classroom Unit is fastened securely to the wall.
Owner’s Manual Relief Damper Change'Air recommends the use of a relief damper assembly be used in conjunction with all units installations unless balanced powered exhaust is made available within the ventilated space. Improper static pressure control of a ventilated space will affect the ventilation capacities and unit performance. A counter balanced, gravity relief damper assembly is available through your Change'Air representative.
Owner’s Manual Tip: At this time, it may be easiest to cut any necessary holes or service knockouts that may be required in the plenum and install any plenum takeoffs or supply grilles before proceeding. 3 4. 5. 6. 7. 8. Apply 3/8” foam tape to the bottom edges of the top plenum and front access cover to create a positive air seal between the plenum and the unit. (If your unit does not have a rear plenum extension apply the foam tape to the back corners of the plenum where it will meet the wall.
Owner’s Manual Dehumidification Unit Installation Drawings Freshman - NA 00 1000 B C (SV - STANDARD) NOTE: All installation drawings provide information for installation of hot water, steam and electric heat units.
Owner’s Manual TROUBLE SHOOTING GUIDE ATTENTION: Change’Air is not responsible for injury to untrained or unauthorized personnel who attempt to do repairs based on the trouble shooting procedures outlined in this section. Your Change’Air Classroom Air Handling Unit has been manufactured with great care and top rated quality control. Should you experience problems with the operation of your Change’Air Air Handler, follow one or more of the procedures below. 1.
Owner’s Manual ATTENTION: Change’Air is not responsible for injury to untrained or unauthorized personnel who attempt to do repairs based on the trouble shooting procedures outlined in this section. CONTROLS Control of the classroom unit is achieved through an external device, which is generally termed “thermostat”. The complexity of the control is a wide range from a simple mercury switch to a computerized system of information monitoring room conditions to process its control.
Owner’s Manual a) b) c) d) Check for evaporator coil or filter, clean as necessary Test for over or under charged unit; adjust accordingly. Confirm fan is running at full speed, and check amperage draw. Check for unit running low suction psi, possible dirty evaporator or filter, clean as needed. 2. Problem related to iced over evaporator coil a) Check for dirty air filter. b) Check for dirty evaporator coil. c) Possible restrictions in the capillary tube or low gas charge; recheck fan speed.
Owner’s Manual Replacement parts and service are available through your local Change’Air representative. To find your local representative contact: Canada (519) 688-6363 U.S.A. (517) 676-0700 or visit www.changeair.com ATTENTION Improper installation, adjustment, alteration, service or maintenance can cause property damage, personal injury or loss of life. Installation and maintenance must be done by a qualified installer, service agency, or authorized dealer.
