Summary of Contents for American Standard TMM4A0A18S21SAA
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18-GF07D1-2 Installer’s Guide WALL-MOUNT AIR HANDLERS 1.5-3TON COOLING/HEAT PUMP (Limited heat pump combinations. See AHRI for details.) TMM4A0A18S21SAA TMM4A0A24S21SAA TMM4A0B30S21SAA TMM4A0B36S31SAA ALL phases of this installation must comply with NATIONAL, STATE AND LOCAL CODES Important: This Document is customer property and is to remain with this unit.
Section 2. Safety Information Note: The small air handlers have been evaluated in accordance with the Code of Federal Regulations, Chapter XX, Part 3280 or the WARNING equivalent. “SUITABLE FOR MOBILE HOME USE.” SAFETY HAZARD! This information is intended for use by CAUTION individuals possessing adequate backgrounds of electrical and mechanical experience.
Section 3. Installation Instructions WALL STRUTURE PROVIDED AIR HANDLER MOUNTING BRACKET 3.1 Unpacking Carefully unpack the unit and inspect the contents for damage. If any damage is found at the time of delivery, proper notification and claims should be made with the carrier. Check the rating plate to assure model number and voltage.
3.3 Duct Work Field ductwork must comply with the National Fire Protection Association NFPA 90A, NFPA 90B and any applicable local ordinance. AIRFLOW WARNING Do not, under any circumstances, connect return ductwork to any other heat producing device such as fireplace insert, stove, etc. Unauthorized use of such devices may result in fire, carbon monoxide poisoning, explosion, personal injury or property damage.
3.5 Refrigerant Piping • Low voltage control connections are made to low voltage pigtails Refrigerant pipe connections are located on the top of the unit. extending from top of air handler (see Figure 1). Connections for Refrigerant piping external to the unit shall be sized in accordance control wiring are made with wire nuts.
3.11 Sequence of Operation Section 4. Wiring Cooling (cooling only) When the thermostat calls for cooling, the circuit from R to G is completed. The blower motor is energized directly by the 24VAC AC SYSTEMS signal from the thermostat. Outdoor Thermostat Air Handler The circuit from R to Y is also completed, energizing the compressor...
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Section 5. - Heater Pressure Drop Table - Use For All TMM4A Wall Mount Air Handler Models HE A TER R A CKS NUMBER OF R A CKS HE A TER MODEL N O . OF R A CKS AIRFL O W B A YHTRM505BRKAA MODEL AIR PRESSURE D R OP - INCHES W .G.
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Section 7. Dimensional Data 6.1 UNIT DIMENSIONS Liquid line connection Low voltage copper (sweat)(3/8˝dia pipe) connection Vapor line connection copper (sweat)(3/4˝dia pipe) Breaker switch (for electric heater High voltage connection only) 7/8˝ dia knock outs Front return shown. Units may also be installed as bottom return.