Safety Rules, Operation, Installation | Essick Air 21 DD, 14 DD

Overﬂow Pipe

Nipple

Rubber Washer Bottom Pan

Nut

Fig. 3

Safety Rules

1.	Read instructions carefully.
2.	Disconnect all electrical service that will be used for the unit before
	you begin the installation.
3.	Electrical hook up should be done by a qualiﬁed electrician, so
	that all electrical wiring will conform to your local standards.
4.	For a maximum safety precaution, make sure cooler cabinet is
	properly grounded to a suitable ground connection.

Motor Installation

•Mount motor. Slide the heads of the provided carriage bolts into the slots of the adjustable channels. Slide these channels sideways in the slotted holes to align with the holes in the motor base and to align the motor shaft with the blower pulley. Mount the motor to the motor mount using these carriage bolts and the washers and nuts provided (see Fig. 1). Make sure all bolts are securely tightened.

•Install pulley. Install the adjustable motor pulley so that it aligns with the blower drive pulley (see Fig. 2) and tighten set screw. See page 3 for instructions on adjusting pulley.

5. Cooler must be connected to proper line current, voltage and cycle,
	as stamped on cooler motor and pump motor speciﬁcation plate.
6.	Do no allow pump to tip over and become submerged.
7.	Always DISCONNECT POWER before installing unit or
	performing any maintenance.

Adjustable Channels

Motor

Pulley

Blower

Housing Blower

Pulley

Operation

For the best cooling performance, if the pads are dry, pre-wet the pads by running the pump for a few minutes before starting the blower.

These coolers may also be used without water for ventilation purposes. When outside air is cool (for example, at night) or when humidity is high the water pump can be turned off.

IMPORTANT: To cool efﬁciently, you must exhaust the stale or used air from the building. Open windows or doors or use exhaust fans located away from the cooler and in the direction you wish to cool the air. The air will ﬂow in the direction of the exhaust openings. A common guide for the amount of exhaust opening needed is to have at least 2 square feet of opening per 1000 CFM.

Installation

CAUTION: Make sure that the mounting surface is strong enough to support the operating weight of the cooler when in use. (For operating weight, see Speciﬁcation Table.)

CAUTION: Never plug in cooler until installation is complete and unit has been tested for rigidity.

CAUTION: Make sure all bolts are securely tightened before starting the cooler.

•Ductwork. See the General Speciﬁcation table for the duct open- ing dimension for your speciﬁc cooler. For down discharge units models 10/12DD and 14/21DD, the duct must go inside the opening. Size these ducts slightly smaller than the duct opening in the cooler. On 75/85DD and 95DD models the duct may go to the inside or outside of the duct ﬂange. The side discharge units have a 1 inch ﬂange. Size these ducts larger than the duct opening to ﬁt over the ﬂange of these units.

Note: Curbs are not provided. The installer is responsible for providing curbs or other means to support the cooler.

Fig. 1

Fig. 2

Electrical Installation

NOTE: Local building code regulations must be observed.

WARNING: Disconnect all electrical service that will be used for this unit before you begin the installation.

•Electrical Supply. Cooler must be supplied with the proper line current, voltage and frequency, as stamped on cooler motor and pump motor speciﬁcation plate. See the wiring diagrams on page 4 for typical electrical connections. NOTE: Connecting improper voltage to motor will void motor warranty.

•Wire sizing. The conductor sizes are to be determined by motor loads and length of run per national and local electrical codes.

•Switches or contactors. Motors require switches or contactors of proper current capacity and should be sized and installed by a competent electrician.

WARNING: Make sure that cooler cabinet is properly grounded to a suitable ground connection for maximum safety.

Water Connection

• Overﬂow assembly. Remove nut and place nipple through the hole in the pan, with the rubber washer between the pan and the head of the drain nipple (Fig. 3). Screw on

nut and draw up tight against bottom of pan. Insert overﬂow pipe in nipple to retain water. Overﬂow pipe may be removed to drain pan when necessary. A garden hose may be screwed on the drain nipple to drain water away from your unit.

•Pump. The pump must be secured to prevent it from tipping over. Secure the pump to the pump mounting bracket. For the 10/12 and 14/21 models, remove the mounting screw on the top of the pump and using this same screw, secure the pump to the pump mount. To secure the pump for the 75/85 and 95 models, slide the pump into the slot of the pump mount and secure with the plastic retainer.

110525

14 DD, 21 DD specifications

Essick Air has been a reliable name in the air treatment industry, providing high-quality evaporative coolers and humidifiers designed for optimal home comfort. Among their impressive range of products, the Essick Air 21 DD and 14 DD models stand out due to their innovative design and advanced features.

The Essick Air 21 DD, renowned for its robust performance, is designed to cover larger areas. It features a 21-gallon water capacity, allowing for extended operation without frequent refills. The unique dual water distribution system ensures even wetting of the evaporative media, enhancing the cooling efficiency. The 21 DD employs tapered media, increasing the surface area for maximum water evaporation, which translates into effective moisture output and temperature reduction.

On the other hand, the Essick Air 14 DD is a more compact model suitable for smaller spaces while still delivering exceptional performance. With a 14-gallon water capacity, this model balances convenience and efficiency, making it ideal for personal or small room use. The 14 DD also utilizes a dual water distribution system, ensuring uniform wetting of the evaporative pads.

Both models feature durable, high-efficiency evaporative media that enhances their cooling abilities. This media is designed to provide effective moisture transfer while maintaining structural integrity over time. The units are equipped with adjustable motor speeds, allowing users to customize airflow to their comfort levels.

In terms of technology, both the 21 DD and 14 DD include built-in automatic shut-off features, which help prevent overflow by stopping the flow of water when the tank is full. This feature not only conserves water but also prolongs the lifespan of the units. Additionally, the user-friendly controls make it easy to operate, even for those who are less tech-savvy.

Portability is another key characteristic of these models. They come mounted with sturdy casters, allowing for easy movement from room to room. The compact design of the 14 DD is particularly advantageous in tight spaces, while the 21 DD is perfect for larger areas without compromising performance.

In summary, the Essick Air 21 DD and 14 DD are excellent choices for anyone looking to enhance indoor air quality and comfort. With their combination of advanced cooling technology, efficient evaporative media, and user-friendly features, these models stand out in the air treatment market, promising refreshingly cool air and improved humidity levels for homes of all sizes.