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ELECTRICAL INSTALLATION INSTRUCTIONS - ALL MODELS
NOTE: Electrical source should have a circuit breaker between the brewer and the main supply which breaks all
poles with a contact separation of at least 3 mm.
CAUTION – Improper electrical installation will damage electronic components.
1. An electrician must provide electrical service as specified.
2. Using a voltmeter, check the voltage and color coding of each conductor at the electrical source.
3. Before electrically connecting the brewer, remove the front cupola cover (some models have the thermostat
knob on the outside of the cover) and rotate the thermostat knob fully counterclockwise to the "OFF" position.
Keep this knob in the "OFF" position until performing the Initial Setup.
4. Electrical service is connected at the upper rear of the single service and scrambler brewers using a junc-
tion box. On double service brewers the rear decorative channel must be removed for access to the terminal
block.
5. Connect the brewer to the power source and verify the voltage at the terminal block before proceeding. Re-
place all panels.
6. If plumbing is to be hooked up later be sure the brewer is disconnected from the power source. If plumbing
has been hooked up, the brewer is ready for Initial Setup.
These brewers must be connected to a cold water system with operating pressure between 20 (138) and 90 psi (620 kPa)
from a 1/2" or larger supply line. A shut-off valve should be installed in the line before the brewer. 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 3/8" flare.
NOTE - Bunn-O-Matic recommends 3/8" copper tubing for installations from the 1/2" water supply line. A tight coil of
copper tubing in the water line will facilitate moving the brewer to clean the countertop. Bunn-O-Matic does not recom-
mend the use of a saddle valve to install the brewer. The size and shape of the hole made in the supply line by this type
of device may restrict water flow.
This equipment must be installed to comply with the National Plumbing Code of Canada and the Canadian
Food Inspection Agency. For models installed outside Canada, you must comply with the applicable
Plumbing/Sanitation Code for your area.
CAUTION - The brewer must be disconnected from the power source throughout the initial setup, except when specified
in the instructions.
IMPORTANT:
Brewer must be level and installed on a sturdy structure.
Electrician's and Plumber's Instructions are provided. These instructions should be carefully followed
before proceeding with initial setup.
Be sure all electrical and plumbing connections are tight.
1. Open manual fill valve located on the bottom of the brewer. Water should start filling the tank. When water is visible
in the hot water gauge glass (center spigot), close valve. Approximate time for filling manually is 3 minutes.
CAUTION: Never leave brewer unattended while manually filling tank.
2. Connect the brewer to the power source. Turn "ON/OFF" switch to the "ON" position. Water should finish filling tank
automatically.
NOTE: It is recommended that the "ON/OFF" switch be left in the "OFF" position at the end of the operating day or when
unattended for a long period of time.
3. Disconnect the brewer from the power source. Remove front cupola cover for access to thermostat knob and timer.
On some brewers the thermostat knob is located on the front of the cupola cover.
PLUMBING REQUIREMENTS
INITIAL SETUP - U3
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