American Standard TMM4A0A24S21SA User Manual

WALL-MOUNT AIR HANDLERS
1.5-3TON COOLING
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.
Installer’s Guide
Section 1. Features
1.1 Standard Features
The TMM4A series wall mount air handler is designed for installation in a closet, utility room, alcove
and can be wall mounted. These versatile units are applicable to air conditioning applications. Field
installed electric resistance heaters are available.
18-GF07D1-1
• FRONT OR BOTTOM RETURN AIR.
• PAINTED FINISH ON GALVANIZED STEEL
• STURDY POLYCARBONATE DRAIN PANS
- The TMM4A wall mount air handler has factory
installed drain pans and is shipped for upflow
applications only.
•
208/230 VAC OPERATION
1.2 Optional Accessories
• 5, 7.5 and 10 kW SINGLE PHASE ELECTRIC
HEATERS
- Circuit breakers are standard on all single
phase 5, 7.5 and 10 kW heaters.
•
STUD OR WALL MOUNTING TABS
•
FULLY INSULATED CABINET
•
3/4'' NPT PRIMARY AND SECONDARY DRAINS
TMM4A0A18S21SA
TMM4A0A24S21SA
TMM4A0B30S21SA
TMM4A0B36S31SA

American Standard TMM4A0A24S21SA Specifications

General

Model Number	TMM4A0A24S21SA
Category	Air Handlers
Airflow	800 CFM
Nominal Airflow	800 CFM
Refrigerant	R-410A
Voltage	208/230 V
Phase	1
Motor Type	PSC
Coil Type	Aluminum
Cooling Capacity	24000 BTU/h
Maximum External Static Pressure	0.5 in. W.C.
Depth	21 in.

Summary

Section 1. Features

1.1 Standard Features

Lists the default features of the wall-mount air handler, including finish, drain pans, and voltage.

1.2 Optional Accessories

Details available add-on components, such as single-phase electric heaters for enhanced heating capabilities.

Section 2. Safety Information

Safety Precautions and Hazards

Covers critical warnings for electrical hazards, explosion risks, hazardous vapors, and material safety.

Section 3. Installation Instructions

3.1 Unpacking

Instructions on how to unpack the unit, inspect for damage, and verify the model and voltage against the rating plate.

3.2 Location

Guidance on selecting an appropriate installation site, emphasizing clearances, level mounting, and structural support requirements.

3.3 Duct Work

Specifies requirements for field ductwork, including compliance with NFPA standards and proper design for airflow and static pressure.

3.4 Condensate Drain

Explains the primary and auxiliary drain connections, trapping, piping, and the importance of proper drainage pitch.

3.5 Refrigerant Piping

Details on refrigerant pipe connections, sizing, testing, and protection during installation.

3.6 Metering Device

Information on the unit's metering device, designed for air conditioning operation, and notes on outdoor models.

3.7 Blower

Describes the multi-speed blower motor, airflow capabilities, and adjustment procedures, emphasizing power disconnection.

3.8 Wiring

Covers field wiring compliance, power wiring requirements, branch circuit protection, and control wiring separation.

3.9 Air Filter

Emphasizes the necessity of an air filter to protect internal components and provides filter size recommendations for models.

3.10 Thermostat

Guidance on selecting and installing a thermostat suitable for single-stage cooling with electric heat.

3.11 Sequence of Operation

Explains the operational steps for cooling and electric heat modes, detailing how the thermostat controls the system.

3.12 Operational And Checkout Procedures

A checklist for verifying system installation, including electrical connections, ductwork, and performance checks.

3.13 Maintenance

Recommendations for regular inspection, cleaning, and replacement of air filters and professional periodic servicing.