American Standard Humidifier Manual: Maintenance Instructions for Models HUMD200A, HUMD300A, HUMD500A

MAINTENANCE INSTRUCTIONS for HUMIDIFIER MODELS *HUMD200A, *HUMD300A

CAUTION! Sudden operation may cause personal injury or property damage. Turn humidistat or humidifier control to “OFF” or lowest setting before servicing.

				4
	6	5
1	3		8
1	3
			1.	Front Cover
			2. Drain Hose
			3. Bypass Damper
			4. Humidifier Pad
				Assembly
			5.	Distribution Tray
			6.	”V” Notches
			7.	1. Front C
			7.	Humidifier Pad
			8.	2. Drain H
			8.	Scale Control Insert
	2	7		3. Bypass
	2	7		4. Water P
				4. Water P
90-820				Assem
				5 Distribu

1.Note humidifier control setting and turn dial to the “OFF” position.

2.Turn off water supply.

3.At the side of the unit opposite the airflow duct pull front cover (1) off holding with both hands and set aside.

4.Pull out the humidifier pad assembly (4) by grasping at top and tipping out.

5.Remove the plastic distribution tray (5) from the humidifier pad assembly by unsnapping the plastic holding strips from the tabs at the end of the tray. Lightly scrape out any mineral deposits and clean the “V” notches (6), but do not scrape off the granular coating from the bottom. This textured surface helps ensure even water flow for maximum performance. If coating is removed replace distribution tray.

6.Slide the humidifier pad (7) out from the plastic Scale Control Insert (8). Clean the insert frame by twisting and flexing it to loosen the calcium deposits, or use a putty knife. Replace the humidifier Pad annually with a #BAYPAD01A1010A humidifier pad for Model HUMD200A and #BAYPAD02A1310A humidifier pad for Model HUMD300A. Slide the pad back into the insert frame with the colored spot up and snap the distributor tray back into place.

7.Re-install the humidifier pad assembly into the unit by fitting its drain into the round receptacle at the base of the unit. Push the assembly in at the top against the retaining ribs that will hold it in place. Push the end of the feed tube back firmly into the nozzle and replace the front cover.

8.Remove the drain hose (2) from the bottom of the unit and bend and flex it to loosen the internal mineral deposits. Then flush it with water under pressure and slip it back onto the black drain fitting.

9.Turn on water supply @ saddle valve.

10.Check system operation:

Manual Humidifier Control: Turn up humidifier control to highest setting and make sure the furnace and blower are operating. Humidifier will operate if RH is less than 50%. Automatic Humidifier Control: Check system operation by setting the knob to “Test.” With furnace and blower operating humidifier will operate for one minute.

11.Set humidifier or control to its original position.

*HUMD200A, *HUMD300A *MAY BE “A” OR “T”

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200A, 300A, 500A specifications

The American Standard 500A, 300A, and 200A series are highly regarded heating and cooling systems known for their efficiency, reliability, and innovative technology. These models are designed to provide optimal comfort while also emphasizing energy savings, making them ideal for residential HVAC applications.

The American Standard 500A is a top-tier model in the lineup, featuring advanced variable-speed compressors that allow for precise temperature control and quieter operation. This system utilizes the latest in inverter technology, enhancing energy efficiency by adjusting the compressor speed according to the home’s cooling needs. The 500A is also equipped with a high SEER (Seasonal Energy Efficiency Ratio) rating, showcasing its ability to reduce energy consumption and lower utility bills. Additional features include a durable, corrosion-resistant cabinet that extends the lifespan of the unit and ensures reliable performance in various weather conditions.

Moving down the line, the American Standard 300A series offers a blend of performance and affordability. This model features a two-stage compressor that balances comfort with energy efficiency. With a mid-range SEER rating, the 300A is adept at meeting household cooling demands while providing savings on energy bills. It incorporates a quiet operation design, making it suitable for use in residential areas. The 300A also employs a multi-position installation option, allowing for flexibility in placement and making it easy to integrate into existing HVAC systems.

The entry-level option, the American Standard 200A, is designed for budget-conscious consumers who still seek reliability and comfort. This model features a single-stage compressor, making it a straightforward and easy-to-use option. The 200A, while less complex than its higher-end counterparts, still delivers solid performance and decent energy efficiency. Its construction is robust, ensuring longevity and dependable service even in challenging weather conditions. The 200A is particularly favored by homeowners looking for a no-frills solution without sacrificing quality.

All three models in the American Standard series are designed with user-friendly controls and smart technology compatibility, allowing homeowners to maintain efficient climate control easily. Whether it's the advanced features of the 500A, the balanced performance of the 300A or the straightforward design of the 200A, American Standard provides a range of options to meet diverse heating and cooling needs, making them a go-to choice for many American households.