Wilbur Curtis WB5GT User Manual
Wilbur Curtis Company, inC.
Service Manual – WB5GT Water Boiler
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 opens service panels. There are no user service-
able 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
Models Included
• WB5GT
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.
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 sufciently to provide a minimum ow rate of two gallons per
minute.
NOTE:Awaterltrationsystemmustbeusedtohelpmaintaintrouble-freeoperation.Air must be
purged from the cartridge prior to connection to equipment. Inareaswithextremelyhardwater,we
highlyrecommendtheuseofaCurtisapprovedwaterlter.Forourfulllineoflters,pleaselogonto
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. Thisunitmustbeinstalledwithadequatebackowprotectiontocomplywithapplicablefederal,
state and local codes.
3.Waterpipeconnectionsandxturesdirectlyconnectedtoaportablewatersupplyshallbesized,
installed and maintained in accordance with federal, state, and local codes.
ISO 9001:2008 REGISTERED
WILBUR CURTIS CO.
6913 Acco Street,
Montebello, CA 90640-5403
For the latest information go to
www.wilburcurtis.com
Tel: 800/421-6150
Fax: 323/837-2410
3. Connect the unit to electrical outlet with appropriate amperage rating (See serial tag on machine).
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. Water in the heating tank will require 60 to 70 minutes before reaching operating temperature (factory
setting of 204°F).
Forthelatestspecicationsandinformationgotowww.wilburcurtis.com
Technical support: 1-800-995-0417 M-F 5:30am-4:00pm pst
Email: techsupport@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
temperature.
2. Press TEMP button for 3 seconds to enter heating tank
temperature programming mode. The temperature in the
heating tank is adjustable from 140º to 210º F.
To change temperature setting:
a. Press to increase at 2º increments.
b. Press to decrease temperature.
c. Press to set and exit programming.
READY
ON/OFFTEMP AERATION
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.
I/O FUNCTION
1. ON/OFF button. Press once to activate control panel.
2. ON/OFF button used to set and exit programming.
OTHER FEATURES
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 Farenheit and
Celsius. The LED screen must be in the Temperature display mode.
READY
ON/OFFTEMP AERATION
READY
ON/OFFTEMP AERATION
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.
ERROR CODES
ERR1=Overow.Waterlevelerror. ERR2 = Open sensor. Break in temperature thermistor circuit.
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ILLUSTRATED PARTS LIST
1
2
3
7
4
18
19
20
21
22
23
24
25
26
27
17
31
5
8
9
10
11
12
13
33
14
6
15
16
28
PARTS LIST
30
32
29
ITEM Nº PART Nº
1
2
3
4
5
5A
6
6A
WC-58117
WC-5661
WC-43067*
WC-2948
WC- 102*
WC- 103
WC- 847*
WC- 883
DESCRIPTION
TOP COVER
LID ASSY, TANK
O’ RING, 4-1/2 I.D. x Ø.285 SILICONE
FITTING, TANK OVERFLOW NICKEL PLATED
SWITCH, TOGGLE NON-LIT SPST 25A 125/250VAC
SWITCH, TOGGLE NON-LIT DPST 25A 125/250VAC
VALVE, INLET 2 GPM 120V 10W GEN USE YELLOW BODY
VALVE, INLET 2 GPM 240V 10W
Continued on page 4
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