American Standard TWE060B***E manual Refrigerant Piping Preparation, Lifting Recommendations

Installation

Refrigerant Piping Preparation

The air handler is designed so that refrigerant piping can enter from either the right or left hand side. It is shipped with the intent that the refrigerant lines will enter from the left hand side. To convert to right hand entry, unbraze the elbow on the suction line and rotate 180° and rebraze.

Note: Important! Access to refrigerant lines is limited in all horizontal and some vertical applications. Therefore, refrigerant lines should be stubbed out and temporarily capped prior to setting the air handler. Protect adjacent surfaces from heat damage when brazing in and around the air handler.

Caution

System Component Damage!

These air handlers are shipped with a dry nitrogen holding charge in the coil. Cut the process tube or puncture the cap to bleed off the nitrogen prior to any brazing. Temporarily cap off tubes if the refrigerant line connections are to be made later.

Installations, Limitations and Recommendations

The general location of the air handler is normally selected by the architect, contractor and/or buyer. For proper installation the following items must be considered.

a.Available power supply must agree with electrical data on component nameplate.

b.Air Handlers shipped wired for 208-230 volt applications can be converted for 460 volt by rewiring the blower motor (See Figure 9).

c.If external accessories are installed on the unit, additional clearances must be provided.

d.All duct work should be properly insulated to prevent condensation and heat loss.

e.Refrigerant gas piping must be insulated.

Caution

System Component Damage!

Properly insulate all refrigerant gas piping to prevent possible water damage due to condensation and to prevent capacity loss and possible compressor damage.

It is recommended that the outline drawings (pages 3 and 4) be studied and dimensions properly noted and checked against the selected installation site. By noting in advance which knockouts are to be used, proper clearance allowances can be made for installation and possible future service.

Note: Important! When installing these units "free standing" with discharge grills and isolators, a top support with isolator should be added to prevent tipping. Support and isolator can be attached to a wall or other appropriate structure.

Note: Important! If adding external accessories to the unit, additional clearances must be considered for the overall space needed.

For installation of accessories available for this air handler, follow the instructions packed with each accessory.

Lifting Recommendations

￿WARNING

Improper Unit Lift!

Test lift unit approximately 24 inches to verify proper center of gravity lift point. To avoid dropping of unit, reposition lifting point if unit is not level. Failure to properly lift unit could result in death or serious injury or possible equipment or property- only damage.

Before preparing the unit for lifting, the center of gravity should be determined for lifting safety. Because of the placement of external components, the unit weight may be unevenly distributed. Approximate total unit weight and corner weights are given in Figure 1- Figure 3.

The crated unit can be moved using a forklift of suitable capacity. For lifting the unit into an elevated mounting position, run lifting straps or slings under the unit and attach securely to the lifting device. Use spreader bars to protect the unit casing from damage. Test lift the unit to determine proper balance and stability.

Caution

Equipment Damage!

Use spreader bars to prevent straps from damaging the unit. Install the bars between lifting straps, both underneath the unit and above the unit. This will prevent the straps from crushing the unit cabinet or damaging the unit finish.

Horizontal Suspension

If the air handler will be suspended, use a suspension mounting kit to isolate the unit from the structure. This is usually accomplished through the use of spring or rubber isolators, which are offered as an accessory. Mounting rods must be field supplied. Isolator selection is dependent upon total unit weight including accessories. Approximate unit weights are provided in Table 1.

TWE-SVX03C-EN 11