Wilbur Curtis WB5N Service Manual

Models Included

• WB5N

• WB5NL

• WB5N30

• WB5NB

• WB5NLB

CAUTION:

Equipment must be

installed to comply
with applicable federal, state,
and local plumbing/electrical

codes.

CAUTION: Follow

this setup procedure

before attempting

to use this unit. Failure to

follow these instructions can
result in injury and/or void of

warranty.

CAUTION: DO NOT

connect the unit to

hot water supply.

The inlet valve is not rated for

hot water.

Wilbur Curtis Company, inC.

Service Manual – WB5N Hot Water Dispenser

Important Safeguards/Symbols

This equipment is designed for commercial use. Any servicing other than cleaning and routine
maintenance should be performed by an authorized Wilbur Curtis Company service technician.

• DO NOT immerse the unit in water or any other liquid

• To reduce the risk of re or electric shock, DO NOT open service panels. There are no user

serviceable parts inside.

• Keep hands and other items away from hot areas of the unit during operation.

• Never clean with scouring powders or harsh chemicals.

Symbols:

WARNINGS – To help avoid personal injury

Important Notes/Cautions – from the factory

Sanitation Requirements

INSTALLATION

This Curtis unit is pre-set and ready to go from the factory.

System Requirements:

• Water Supply 20 – 90 PSI (MINIMUM FLOW RATE of 2 GPM)*

• Electrical: See electrical schematic.

SETUP STEPS

1. The unit should be level (left to right - front to back), on a secure surface.

2. Connect the water line to the water inlet tting on the rear of the unit. Water volume going to the
machine should be consistent. Use tubing sized sufciently to provide a minimum ow rate of
two gallons per minute.

NOTE:Awaterltrationsystemmustbeusedtohelpmaintaintrouble-freeoperation.Air must be
purged from the cartridge prior to connection to equipment. Inareaswithextremelyhardwa-

ter,wehighlyrecommendtheuseofaCurtisapprovedwaterlter.Forourfulllineoflters,please

log on to www.wilburcurtis.com.

NSF requires the following water connection:

1. A quick disconnect or additional coiled tubing (at least 2x the depth of the unit) is required so
that the unit can be moved for cleaning.

2. Thisunitmustbeinstalledwithadequatebackowprotectiontocomplywithapplicablefederal,

state and local codes.

3.Waterpipeconnectionsandxturesdirectlyconnectedtoaportablewatersupplyshallbesized,

installed and maintained in accordance with federal, state, and local codes.

3. Connect the unit to electrical outlet with appropriate amperage rating (See serial tag on ma­chine).

ISO 9001:2008 REGISTERED

WILBUR CURTIS CO.

6913 Acco Street,

Montebello, CA 90640-5403

For the latest information go to

www.wilburcurtis.com

Tel: [phone]

Fax: [phone]

4. Once power has been supplied to the unit, ip the toggle switch to the ‘ON’ position (located on
the rear of the unit), the water tank will begin to ll. When the water level in the tank reaches the
probe, the heating element will turn on.

5. During the initial setup, the heating tank will reach operating temperature in 60 to 70 minutes
(factory default 204°F).

* Expect ow rate from hot water faucet to be 1 GPM from WB5N and 2 GPM from WB5NL

For the latest specications and information go to www.wilburcurtis.com

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PROGRAMMING

UNIVERSAL CONTROL MODULE (UCM)

A FUNCTION

1. Press TEMP button for 1 second to check the set point tem-

perature.

2. Press TEMP button for 3 seconds to enter heating tank tem-

perature programming mode. The temperature in the heating

tank is adjustable from 140º to 210º F.

To change temperature setting:

a. Press to decrease temperature.

b. Press to set and exit programming.

c. Press to increase at 2º increments.

B FUNCTION

1. Press the AERATION button to pump air through the water in the heating tank.

2. Aerator pump will run as long as you hold down the button. Release button to stop.

LED SCREEN DISPLAY

When the unit is on and not in programming mode, the UCM will stay on and the LED screen will
display the current tank temperature. The factory setting is 204ºF. In the UCM programming, there is
an option to change the screen display to read HOT instead of the set point temperature. You may also
change the temperature units from Fahrenheit to Celsius.

To Change the LED To Read HOT:

1. Press the left TEMP button and hold down for 5 seconds. The F will start ashing.

2. Continue holding the TEMP button, at the same time, press and hold the ON/OFF button for 5

seconds.

3. Release both buttons. The program is now changed and the LED screen will display HOT.

4. While in the HOT display, pressing the TEMP button for 1 second will display the tank temperature.

To Change the LED To Read In Celsius:

NOTE: When the LED screen is in the HOT display mode, you cannot switch between Fahrenheit and
Celsius. The LED screen must be in the Temperature display mode.

1. Press and hold down the TEMP button for 10 seconds. The temperature reading will change to

Celsius.

2. Release the TEMP button. The LED screen will display the temperature in degrees Celsius (default is 96ºC).

AERATOR

The aerator pump will automatically come on every 30 minutes. Aeration is factory set to run for 5 seconds. When the aeration is running, the display
shows the LED bars chasing from left to right.

I/O FUNCTION

1. ON/OFF button. Press once to activate control panel.

2. ON/OFF button used to set and exit programming.

ERROR CODES

ERR1=Overow.Waterlevelerror. ERR2 = Open sensor. Break in temperature thermistor circuit.

ENERGY SAVER

The Energy Saver Mode is Defaulted to off. To turn on the energy saver mode, press and hold both the ON and TEMP button for 10 seconds. Use
the scroll buttons TEMP ◄ and ► AIR to choose OFF, ON, or 140ºF. Press the button to select.

If “OFF” is selected, Energy saver is disabled.

If “On” is selected, 4 Hr. after last dispense, the temp will not be maintained at any temperature (it will eventually drop to room temp).

If “140F” is selected, 4 Hr. after last dispense it maintains Tank Temp at 140F.

When the Energy Saver Mode is on, you can turn it off by pressing one of the control buttons or by simply dispensing some water through the faucet.

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ILLUSTRATED PARTS LIST

1
2

3
4
5

6

7

8

11
12

13

14

15

10

9

DESCRIPTIONPART №ITEM №

1
1A
2
2A

3
4
4A
5

6
7

8
8A

9
10
11
12
13
14

WC-37567K
WC-37579BLK
WC-1048-101*
WC-1009-101
WC-13046-101
WC-718 *
WC-719
WC-53157-101
WC-794K *
WC-8559*
WC- 847*

WC-883

WC-3518*
WC-3503*
WC-61987
WC-2948
WC-1200
WC-103 *

KIT, TOP COVER WB5N & WB5NL
KIT, TOP COVER WB5NB & WB5NLB BLACK
PUMP ASSEMBLY, AGITATION (120V)
PUMP, AGITATION 220V W/CAPACITOR & TERMINALS
HARNESS ASSEMBLY, DV WB5N & WB5NL
TRANSFORMER, 120VAC-12VAC 500mA W/PIGTAIL WIRES
TRANSFORMER, 240/120VAC-12VAC
TRIM, EDGE GUARD CHROME
KIT, MINI UNIVERSAL CONTROL MODULE 120VAC W/LABEL
RELAY, SOLIDSTATE 40A W/INTEGRATED HEATSINK
VALVE, INLET 2 GPM 120V 10W
VALVE, INLET 2 GPM 240V 10W
LEG, GLIDE 3/8”-16 STUD SCREW
LEG, 3/8”-16 STUD SCREW BUMPER
BRACKET, STIFFENER
FITTING, TANK OVERFLOW
CORD, 14/3 SJTO 6’ BLK W/PLUG
SWITCH, TOGGLE DPST 25A 125/250VAC RESISTIVE

* SUGGESTED PARTS TO STOCK

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