Trane UH-SVX01A-EN manual Installation, Periodic Service Heavy Objects, Lifting/Suspension Methods

Installation

Installation: P Type

Periodic Service

￿WARNING

Heavy Objects!

Ensure that all hardware used in the suspension of each unit heater is more than adequate for the job. Failure to do so may result in extensive property damage, severe personal injury or death.

￿CAUTION

Lifting/Suspension Methods!

Make certain that the lifting methods used to lift the heater and the method of suspension used in the field installation of the heater are capable of uniformly supporting the weight of the heater at all times. Failure to heed this warning may result in property damage or personal injury!

CAUTION

Structural Integrity!

Make certain that the structure to which the heater is mounted is capable of supporting its weight. Under no circumstances must the piping or the electrical conduit be used to support the heater; or should any other objects (i.e. ladder, person) lean against the heater or the electrical conduit for support.

CAUTION

Performance Failure!

Unit heaters must be hung level from side to side and from front to back. Failure to do so will result in poor performance and or premature failure of the unit.

It is assumed that the design engineer has selected, sized, and located in the area to be heated by the design engineer. However, the information given here may be of additional help to the installer.

Vertical unit heaters should be located to give spot heating or a circulatory distribution, preferably near the outer perimeter of the building. The units should be spaced to properly blanket the areas with

warm air. Place the units at points of greatest heat loss. Blanket outside doorway and provide ample coverage of window areas. Keep units away from obstructions that will impede the full and natural air delivery of the units.

Install unit heaters to meet CSA and OSHA requirements; Vertical Unit Heaters mounted lower than 2.4 meters (8 feet) from the floor must be equipped with an OSHA fan guard. Weldnuts are provided at the top of all units for suspension purposes. The unit should be suspended from connections provided in the unit by means of rods. The rods should then be attached to solid supports of the building.

Units must hang level vertically and horizontally.

Provide sufficient clearance around units for maintenance purposes. This includes at least 7 inches above all Vertical Unit Heaters even though the motor is removable through the bottom.

Isolators are not required but may be desirable for some applications. Refer to Table 2 for Unit Weights.

Table 2. Unit Weights-Lbs

Vertical Unit Heaters

Unit	Weights (Lbs.)
042	26
064	32
080	36
102	51
122	54
146	69
166	69
202	75
252	115
280	120
336	120
384	126
500	267

600210

720260

EXAMPLE

Table 4 lists maximum mounting height and floor spread data of warm air coverage at floor level with louver cone diffusers. Correction factors for various water temp. and psig of steam are in Table 7.

An approximation of the floor spread when operating on other than 2 lb. Steam or 219 degree may be obtained by ratioing the new floor spread and the maximum mounting height to that at 2 lb. steam or 219 degree hot water.

Following is an example:

Determine the floor spread and the maximum mounting height of a std. model 80 unit heater with a cone diffuser set at 90 degrees, operating on 280 degree hot water.

From Table 6, maximum mounting height of a model 80 at 219 degree hot water is 18.5 ft. with floor coverage of 14.0 ft. diameter. The maximum mounting height correction factor at 280 degree hot water is 0.80.

18.5 ft. x 0.80 = 14.8 ft.

Maximum mounting height of a model 80 using 280 degree hot water.

“X” = floor spread of model 80 using 280 degree hot water.

X = 14.8 x 14.0 / 18.5

X = 207.2 / 18.5

X = 11.2 ft.

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