Installation Instructions
P-Trap Installation
•A P-trap is recommended when the suc- tion riser is equal to or greater than 20 feet in height.
•When the condenser is installed above the evaporator, the P-trap will help the return of oil back to the compressor.
•The placement of the P-trap should be at the halfway mark of the suction riser. For example if the suction riser is 30 feet tall then a P-trap is recommended at the 15 foot mark of the suction riser (see
Figure 1).
•A P-trap may be fabricated using (2) street elbows and (2) regular elbow. A prefab-
ricated trap may be purchased from a wholesaler or distributor however the trap should be shallow as the (3) elbow con- figuration. Each elbow is approximately 2 equivalent feet. One P-trap is equal to approximately 12 equivalent feet.
NOTE: Avoid excessive oil buildup. The P-trap should have a shallow depth and a short horizontal section.
•P-traps are not required at the foot of the hot gas risers due to increased oil flow at higher temperatures.
Figure 1
Condenser
30'
15'
Evaporator
Side Discharge Condensers | 8 | www.enviromaster.com |
