Bunn OT Service Manual download pdf (Page 4)

Page 4

MODELS OT15 & 20 require 2-

wire, grounded service rated

120 volts ac, 15 or 20 amp re-

spectively, single phase, 60 Hz.

Model 15 has an attached

cordset.

NEUTRAL

WHITE

L1 BLACK

208 or 240V.A.C.

120V.A.C.

L2 RED

MODELS OT35 & RT35 require

3-wire, grounded service rated

120/208 or 120/240 volts ac, 20

amp, single phase, 60 Hz.

120V.A.C.

NEUTRAL

WHITE

L1 BLACK

Electrical Hook-Up

Model OT15 has an attached cordset.

Models OT20, OT35, & RT35, proceed as follows:

CAUTION – Improper electrical installation will dam-

age 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. Remove the front panel beneath the sprayhead

and rotate the control thermostat knob fully

counterclockwise to the "OFF" position and re-

place the panel.

4. Remove the rear panel, feed the cord through

the strain relief, and connect it to the terminal

block.

5. Connect the brewer to the power source and

verify the voltage at the terminal block before

proceeding. Replace the rear panel.

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 Set-Up.

PLUMBING REQUIREMENTS

This brewer must be connected to a cold water

system with operating pressure between 20 and 90

psi from a 1/2" or larger supply line. A shut-off valve

should be installed in the line before the brewer. In-

stall a regulator in the line when pressure is greater

than 90 psi to reduce it to 50 psi. The water inlet

fitting is 1/4" flare.

NOTE - Bunn-O-Matic recommends 1/4" copper tub-

ing for installations of less than 25 feet and 3/8" for

more than 25 feet from the 1/2" water supply line. A

tight coil of copper tubing in the water line will facili-

tate moving the brewer to clean the counter top. Bunn-

O-Matic does not recommend 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 Basic Plumbing Code of the Build-

ing Officials and Code Administrators Inter-

national, Inc. (BOCA) and the Food Service

Sanitation Manual of the Food and Drug Ad-

ministration (FDA).

MODELS OTA, RTA & RT35B

require 2-wire, grounded ser-

vice rated 240 volts ac or 200

volts ac, 20 amp single phase,

50 Hz.

MODEL RT25B requires 2-

wire, grounded service

rated 100 volts ac, 20 amp

single phase, 50 Hz.

200 OR 240V.A.C.

L1 BLACK

L2 RED

100V.A.C.

NEUTRAL

RED

L1 BLACK

P1709

ELECTRICAL REQUIREMENTS

CAUTION - Do not connect the brewer to the power source until specified in Initial Set-Up.

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