Gravity Drain Installation
Caution: Plumbing installation must observe all state and local codes.
These guidelines must be followed when installing drain lines to prevent water from flowing back into the ice
maker storage bin and potentially flowing onto the floor causing water damage:
• Drain lines and fittings must have a 5/8" inside diameter.
• Drain lines must have a 1" drop per 48" of run (1/4" per foot) and must not create traps.
• The floor drain must be large enough to accommodate drainage from all drains.
• Insulate the bin drain line to prevent condensation.
Be sure to follow these guidelines to prevent water backing up into the storage bin.
Below are examples of gravity drain line installations. If a trap is in the drain line, the drain line must be vented to
assure proper draining. Without the vent, water will backup until enough pressure builds up to force the water
past the trap. Water may backup into the ice bin before the amount of pressure needed is achieved. Water in the
storage bin will cause the ice in the bin to melt prematurely.
The customer's complaint will be slow ice production. The ice that has been made is melting prematurely
because water is backing up in the ice bin.
From Ice Maker
1. Normal Drain.
Proper Drainage Pitched
from ice maker at least
1/4" per foot.
2. With Trap. Poor Drainage
Poor drainage. Water backs
up in drain line.
3. With Trap and Vent. Proper
Drainage Vent assures
Examples of Gravity Drain Installations
To Floor Drain