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Istruzioni per l'uso Speed Queen, Modello REMOTE AIR-COOLEDCONDENSER 2500018

Produttore : Speed Queen
File Size : 792.29 kb
File Nome : H-IM-RACC.pdf
Lingua di insegnamento: en
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Four gussets (Figure 3, item 3) are provided for leg support. Assemble the gusset in each corner with 1/4 - 20 x 3/4” long bolts and 1/4” nuts. Discard the four mounting angles (Figure 5, item 1). Leg Assembly for Vertical Airflow Installation (Models 024-133; 5-26) Remove fasteners securing condenser to skid. Remove leg extensions (Figure 4, item 1) by removing four 5/16” x 3-1/2” bolts. Install as shown in dotted lines with same four bolts. Install mounting angle (item 2) as shown (dotted lines) with four 1/4 - 20 x 3/4” bolts provided. Condenser can be hoisted by attaching hooks into 1-1/2” holes in leg assemblies. Horizontal Condenser Horizontal airflow units should be installed with the coil (inlet air side) facing the prevailing winds. Where strong winds are common, it is recommended that a wind deflector (not supplied) be used to discharge the air vertically from the unit, to prevent capacity loss during varying wind conditions. The wind deflector should be installed on the fan side of the unit. If horizontal airflow units are installed with the air inlet facing a wall, a distance of at least 48 inches should be maintained between unit and wall. If it is necessary to have the unit positioned so the air discharge is toward a wall, it should be spaced at a distance no less than three times the coil face height from the wall. Leg Assembly for Horizontal Airflow Installation (Models 008-016; 1-3) Attach four mounting angles (Figure 5, item 1) to the unit, using two 1/4 - 20 x 3/4” long bolts and 1/4” nuts per mounting angle. Discard the two legs, (Figure 3, item 2) and four gussets (Figure 3, item 3). Figure 3. Leg assembly (vertical airflow, models 008-016; 1-3) Figure 5. Leg assembly (horizontal airflow, models 008-016 ; 1-3) Figure 4. Leg assembly (vertical airflow, models 024-133; 5-26) Leg Assembly for Horizontal Airflow Installation (Models 024-133; 5-26) Remove bolts securing condenser to skid. Remove item 1 and attach to rear of bottom leg (item A) to complete mounting base. Item 2 is not required in the horizontal discharge application and may be discarded. Condenser can be hoisted by the 1-1/2” holes in leg assemblies. Typical Piping Arrangements Figure 7 illustrates a typical piping arrangement with a remote condenser located at a higher elevation, common when the condenser is on a roof and the compressor and receiver are on grade level or in a basement equipment room. In this case, the design of the discharge line is very critical. If properly sized for full load conditions, the gas velocity might be too low at reduced loads to carry oil through the discharge line and condenser coil. Reducing the discharge line size would increase the gas velocity sufficiently at reduced load conditions; however, when operating at full load, the line would be greatly undersized and create an excessive refrigerant pressure drop. This condition can be overcome in one of two following ways: The discharge line may be properly sized for the desired pressure drop at full load conditions and an oil separator installed at the bottom of the trap in the discharge line from the compressor. A double riser discharge line may be used as shown in Figure 8. Line A should be sized to carry the oil at minimum load conditions and Line B should be sized so that at full load conditions, both lines would have sufficient flow velocity to carry the oil to the condenser. For more complete information, please refer to the ASHRAE Handbook on Systems. NOTES: All oil traps are to be as short in radius as possible. Common practice is to fabricate the trap using three 90-degree ells. Pressure relief valves are recommended at the condenser to protect the coil. A drain line check valve is recommended for applications where the condenser may be at a lower temperature than the receiver. See Tables 1, 2, and 3 for discharge and liquid drain line size recommendations for remote condenser selections. Installation, Refrigerant ...

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