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PLUMBING REQUIREMENTS
This dispenser must be connected to a cold water system with operating pressure between 20 and 90 psi (138 - 620 kPa)
from a 1⁄2” or larger supply line. A shut-off valve should be installed in the line before the dispenser. Install a regulator in
the line when pressure is greater than 90 psi (620 kPa) to reduce it to 50 psi (345 kPa). The water inlet fitting is 1⁄4” flare.
NOTE - Bunn-O-Matic recommends 1⁄4” copper tubing for installations of less than 25 feet and 3⁄8” for more than 25 feet
from the 1⁄2” water supply line. At least 18 inches of an FDA approved flexible beverage tubing, such as reinforced braided
polyethylene or silicone, before the dispenser will facilitate movement to clean the countertop. Bunn-O-Matic does not
recommend the use of a saddle valve to install the dispenser. The size and shape of the hole made in the supply line by
this type of device may restrict water flow.
NOTE - If a backflow preventer is required by code, a shock arrestor should be installed between backflow preventer and
dispenser. Installing the shock arrestor as close to the dispenser as possible will provide the best results.
NOTE - Water pipe connections and fixtures directly connected to a potable water supply shall be sized, installed and
maintained in accordance with federal, state and local codes.
PLUMBING HOOK-UP
1. Flush the water line and securely attach it to the elbow fitting on the bottom of the dispenser.
2. Turn on the water supply.
INITIAL FILL & HEAT
1. Turn on the water supply and connect the dispenser to the power source.
2. Water will automatically flow into the tank to the proper level and then shut-off. This will take less than ten minutes.
A tank full of cold water will take approximately eighty minutes for the water to heat on 120 volt versions, and forty
minutes on 120/240 and 220-240 volt versions.
3. Fill the hopper(s) with the dry product to be dispensed.
As directed in the International Plumbing Code of the International Code Council and the Food Code Manual of
the Food and Drug Administration (FDA), this equipment must be installed with adequate backflow prevention to
comply with federal, state and local codes. For models installed outside the U.S.A., you must comply with the
applicable Plumbing /Sanitation Code for your area.
PRESET TANK TEMPERATURE
Tank temperatures have been preset at the factory to 180°F (82°C). Bunn recommends that to provide the best
quality beverage, the installer adjust the tank temperature to the powder product manufacturer’s recommended
temperature for the hot powder product being used.
LIQUID LEVEL CONTROL
The system automatically maintains the hot water tank’s level by energizing the refill solenoid when the water level drops
below the liquid level probe. If the system has not successfully refilled in 10 minutes, a refill error occurs. When a refill
error occurs, the refill solenoid is de-energized. Once the cause of the refill error has been investigated and cured, the
system can be reset by either disconnecting (for at least 5 seconds) and then reconnecting the power to the machine, or
by entering one of the program modes (see Programming Modes.)
RINSE TIMER
The dispenser is shipped from the factory with the rinse timer disabled. To enable the rinse timer, refer to Programming
the Dispenser and select yes in the “Rinse Alarm ?” screen; set timer to the desired time and exit the programming mode.
When enabled, the rinse timer automatically keeps track of the time since the dispenser was last run through a rinse
sequence. If the dispenser detects that a rinse sequence has not been run for the desired time, a message will appear on
the LCD display. If the Lockout is set, after an additional 4 hours, a rinse cycle has still not been run, the LCD display will
display a message, and the hopper drives will be disabled until a rinse sequence has been run.