Bunn ThermaFresh User manual

For use with BTX-B
Nothing
brews like a
BUNN.
Use and Care Manual

SPECIFICATIONS
Electrical - UL and C-UL Listed for Household Use Only. This brewer has an attached,
3-prong grounded cord set and requires 2-wire service with ground, rated 120 volts AC,
7½ amps, single phase, 60 Hz. Components include an 800-watt tank heater and a
34-watt tank “keep warm” heater, 850-watts total.
Dimensions - 153/8” high; 71/8” wide; 137/8” deep
Brew Capacity -Four to 10 five-ounce (5 oz) cups per batch.
Weight - 8.0 pounds; includes decanter, filters, coffee funnel,
and deliming tool.
HIGH ALTITUDE USE
Your BUNN®coffee brewer is designed to operate in most areas of the country. For high
altitude use, over 4000 feet, models with a “D” designation should be used.
Lid
Carafe Lid
Stainless
Steel Tank
(Located Inside)
Sprayhead
Brew
Funnel
Vacation
Switch
Carafe
The BUNN logo is a trademark of Bunn-O-Matic Corporation.
38864.0000G 10/08 ©2006 BUNN-O-MATIC CORPORATION

1
Welcome
Thank you for purchasing a BUNN home brewer. BUNN home brewers
are uniquely designed to do exactly what BUNN commercial brewers
do: give you great-tasting coffee – quickly, simply and consistently.
Table of Contents
Important Safeguards........................................................................................................2
General Information...........................................................................................................3
Hot Water...........................................................................................................................3
Initial Set Up Guide............................................................................................................4
Brewing Perfect Coffee......................................................................................................5
Better Brewing................................................................................................................6-7
Cleaning and Maintenance.............................................................................................8-9
Draining the Brewer.........................................................................................................10
Authorized Service ..........................................................................................................10
Accessories .....................................................................................................................10
Troubleshooting ...............................................................................................................11
Limited Warranty..............................................................................................................12
This symbol alerts you
to important operating
and service instructions.
Keep this booklet
for future reference
Record these numbers from the bottom of
your brewer before filling the brewer with
water:
MODEL:__________________________
DATE CODE: ______________________
WARNING, TO REDUCE THE RISK OF FIRE
OR ELECTRIC SHOCK
DO NOT DISASSEMBLE THE BREWER
NO USER-SERVICEABLE PARTS INSIDE
REPAIR SHOULD BE DONE BY
AUTHORIZED SERVICE PERSONNEL ONLY
This symbol alerts you to
the risk of fire or electrical
shock in the accompanying
message.
WARNING
RISK OF FIRE OR
ELECTRICAL SHOCK
If you need any assistance, please call us at
1-800-352-BUNN (2866).
In order to receive full assistance, please
have your date code ready when calling for
service. (Date code is located on the bottom
of your brewer).

2
IMPORTANT SAFEGUARDS
Follow these basic safety precautions when using electrical appliances to reduce the risk
of fire, electric shock, and/or personal injury:
• Readallinstructions.
• Donottouchhotsurfaces.Usehandles.
• Donotplacecord,plugs,orbrewerinwaterorliquid.
• Closesupervisionisnecessarywhenthebrewerisusedbyornearchildren.
• Unplugfromoutletwhennotinuseforextendedperiodsoftimeandbeforecleaning.
Allow to cool before putting on or taking off parts, and before cleaning.
• Donotoperatethebrewerwithadamagedcordorplugorifthebrewermalfunctions
or is damaged in any manner. Return the brewer to an Authorized Service Facility for
examination,adjustment,orrepair.(Refertopage10.)
• Usinganaccessorynotevaluatedforusewiththisbrewermaycauseinjuries.
• Forhouseholduseonly.Donotuseoutdoors.
• Donotletcordhangoveredgeoftableorcounterortouchhotsurfaces.
• Donotplacethebreweronornearahotgasorelectricburnerorinaheatedoven.
• Donotusebrewerforanyotherpurposethanitsintendeduse.
• Donotplaceorremovefunnelordecanterwhilebrewing.
• Donotusethedecanteronarangetoporinamicrowave.
• Donotsetahotdecanteronacoldsurface.
• Donotuseacrackeddecanteroradecanterwithalooseorweakenedhandle.
• Donotpourliquidsintothewatertankotherthanwaterorvinegarsolutionfor
cleaning, as specified in this manual.
• Donotcleandecanterwithcleansers,steelwoolpads,orotherabrasivematerials.
• Whenthebrewerisidle,thelidshouldbeintheclosedposition.
SAVE THESE INSTRUCTIONS
A short power-supply cord is used to reduce the risks resulting from becoming entangled
in or tripping over a longer cord.
Ifanextensioncordisused,themarkedelectricalratingoftheextensioncordshould
be at least as great as the electrical rating of the brewer. The cord should be arranged
so that it will not hang over the edge of table or counter where it can be pulled on by
children or tripped over.
Theextensioncordmustbeathree-wirecordofthethree-pronged,three-socketed,
grounding type (including grounding conductor).

3
GENERAL INFORMATION
Improper set up will result in permanent damage and void the limited warranty.
Read and follow the initial set up instructions on page 4.
• Thisbrewerisdesignedtoremainpluggedinatalltimes,exceptduringinitialsetupor
when cleaning.
• Avacationswitchisprovidedonthelowersidetocompletelyshutoffallelectrical
components when your plans take you away from home for three or more days. Safety
features that are designed into the BUNN coffee brewer make the daily use of this
switch unnecessary. Press Ito turn on and press Oto turn off.
• Ifthebrewerhasbeenshutofforunpluggedforanextendedperiodoftime,llthe
tank with water and allow the water in the tank to heat to the proper temperature
before using (about 15 minutes or until the heating sound stops).
• YourBUNNcoffeebrewerhasaspeciallydesignedtanktokeepthewateratthe
proper temperature. This constant supply of hot water assures correctly brewed coffee
in less than three minutes.
• (BTX models) The brewed coffee flows into an unheated thermal carafe. The double
wall stainless steel construction will hold coffee at serving temperature for about two
hoursatmaximumavor.Pre-heatingwithhotwaterwillincreasethetimeyourcoffee
stays warm.
• (GRX, BX and NHBX models) The brewed coffee flows into a glass decanter where it is
kept at serving temperature on the porcelain decanter warmer. The warmer is controlled by
the lighted on/off switch on the front of the brewer.
NOTE: The warmer switch controls only the decanter warmer.
• Thedecanterlidreducescoffeeevaporationandtemperatureloss.
• Whilecoffeeisbeingbrewed,thenewestwaterinthetankisheatedtotheproper
temperature and held until needed.
•Whenthebrewerisnotinoperation,thelidshouldbeclosed.Ifthelidisleftopen,
water could drip from the sprayhead when cold water is poured in.
• UseCAUTIONwhendispensinghotwaterfromthebrewer.Thewaterisapproximately
50°F hotter than what’s available from your hot water faucet and is always available for
other uses.
• Thesprayheadmayperiodicallybecomeloose.Usingextremecautionsinceitmaybe
hot, retighten the sprayhead with your fingertips.
NOTE: A severe burn may result if the sprayhead becomes loose and falls off while the
coffee is brewing.
Get hot water anytime. Just leave out the paper filter and
coffee from the brew funnel. With funnel in place, pour cold
water into brewer and in just minutes you will have hot water.
HOT WATER
D
i
d
y
o
u
k
n
o
w
?
?
i
no

4
Initial Set Up Guide
1. Slide empty funnel into funnel guides
as shown.
2. Fill decanter with cold water. Swivel
or lift brewer lid and pour water into
brewer. Position decanter on base
below funnel. Close the lid and wait
three minutes while the internal tank
partially fills.
3. Open the lid. Remove decanter and
fill with cold water again. Pour water
into brewer. Position decanter on base
under funnel and close the lid.
4. Wait until water flows from the funnel.
When water flow stops, pour out
any water that has collected in the
decanter. Replace decanter on brewer
below the funnel.
5. Now, plug in the brewer.
6. Press the bottom of the vacation switch,
located on the side of the brewer, to turn
unit on (Press Ito turn on and press O
to turn off.) Wait 15 minutes for the water
in the tank to heat.
See steps on page 5 for brewing perfect coffee.
NHBX BTX/BX/GRX
IMPORTANT:
Brewer is NOT ready to plug in until you have followed
the steps below. Do NOT plug in brewer until step #5.
U
N
N

5
Brewing Perfect Coffee
1. Insert BUNNcoffee filter into the brew
funnel.
2. Measure fresh coffee into the filter
and shake gently to level the bed of
grounds. (We recommend 1-2 heaping
Tbsps. of drip grind per cup of coffee).
3. Slide the brew funnel into funnel guides
and open lid.
4. Pour in cold water; minimum 4 cups
 (20oz),uptomaximum10cups(50oz)
Do not close the lid without the
funnel and decanter in place. Closing
the lid releases the hot water.
5. Position decanter in place on base
under funnel of brewer. (With BTX,
pre-heat carafe with hot water)
6. Turn on the warmer. (not applicable
with BTX ThermoFresh brewer)
7. Close the lid to start the flow of water
into the tank.
8. When brewing has stopped, remove the
brew funnel and discard the filter and
grounds. Do not touch hot grounds.
BUNN filters are unique. Made with a special grade of paper for
best coffee f avor, our filters are designed for strength, so the
sides are taller and you don’t end up with overflow and grounds
in your coffee.
See page 4 for initial set up before brewing
the first time.
Topre-heatthethermalcarafe,llwithhotwaterforapproximately
30 seconds. Empty before brewing coffee into carafe.
D
i
d
y
o
u
k
n
o
w
?
?
Did you
know
?
Sabía
D
i
d
y
o
u
k
n
o
w
?D d ou
know
NHBX BTX/BX/GRX
U
N
N

6
Better Brewing
BUNNhomebrewersaremadetodoexactlywhatBUNNcommercialbrewersdo:
produce great tasting coffee - quickly, simply and consistently. Cup after flavorful cup,
year after year, nothing brews like a BUNN.
The Patented BUNN Brewing Difference
Perfect coffee flavor is robust without bitterness and is determined by three elements:
watertemperature,thetimegroundcoffeeisexposedtothewaterandhowmuchofthe
coffeeisexposedtothewater.
TEMPERATURE
The patented ready-to-brew reservoir keeps water at the ideal brewing
temperature ofapproximately200°F.
TIME
The fast 3-minute cycle is the perfect brew cycle time for the most coffee
avorwithoutbitterness.Brewcyclesthatexposegroundcoffeeformore
than6minutescauseanoverextracted,bittertaste.
TURBULENCE
The unique sprayhead design creates the right amount of turbulence to
suspendgroundcoffeeandextractavorevenlyandthoroughly.
With most coffee makers, water drips straight through without evenly
exposingallcoffeegranulestothewater.
Use of decaffeinated, fine grind coffee and/or softened water may cause
an overflow of grounds into your decanter. Visit www.bunn.com or call
BUNN Customer Service at 800-352-2866 to order a flow restrictor
sprayhead free of charge.
For the best cup of coffee, grind fresh beans just before brewing. Adjust
the amount of coffee to suit your individual taste.
D
i
d
y
o
u
k
n
o
w
?
?
Did you
kn w
Usted
D
i
d
y
o
u
k
n
o
w
?
?
d you
know

7
BUNN recommends you DO:
• Keep coffee stored in a clean, dry place away from heat registers and vents or
extremecoldformaximumfreshness.
• Use enough coffee (one to two heaping tablespoons per cup or about 1½ inches of
coffee in a flat-bottom filter.)
• Use a thermal carafe if you plan to hold coffee more than 20-30 minutes. Coffee
can be held in a glass decanter for up to 30 minutes or a thermal carafe for about
two hours.
• Make sure to clean your decanter every day.
•Pre-heat the thermal carafe with hot water for best results.
• Use only BUNN paper filters for proper fit and function. Using a shorter filter may
result in overflow.
• Dispose of filter and grounds immediately after brewing to prevent drip-through of
unwanted flavors trapped in used coffee grounds.
• Clean your BUNN brewer with mild, dish soap and water at least once a week,
especially the sprayhead area. (Do not use any soap or cleaner with citrus added).
BUNN recommends you AVOID:
• Mixingfreshbrewedcoffeewithpreviouslybrewedcoffee.
• Brewing over prev ously u ed coffee grounds - all the flavor has already been
completelyext acted
• Re-heating for serving any coffee with a temperature below 175°F.
• Serving coffee brewed with beans or ground coffee past the freshness date.
• Lettingcoffee“bake”onabrewerwarmer.Twentyto30minutesisthemaximum
time allowable for an open decanter to deliver a perfect cup of coffee.
• Serving coffee in decanters that haven’t been properly cleaned, since acids and
other organic materials can taint even the best coffee.
Fresh, good-tasting water is essential for a perfect cup of coffee.
After all, ove 98% of the beverage is water. If your water contains
excessiveamountsofsediment,tasteorodors,werecommend
installing a water conditioner and requesting a flow restrictor
sprayhead.
Your BUNN brewer is designed to remain plugged in at all times,
exceptduringinitialsetup,whencleaningorifitwillnotbeinusefor
three or more days.
D
i
d
y
o
u
k
n
o
w
?
?
k o
Sab
Usted
a
z
?o s
a e s
D
i
d
y
o
u
k
n
o
w
?
?
D
now
S
a
s
e
?
Sabía
Uste
u
e
s
u
?Vo s
avez su

8
CLEANING INSTRUCTIONS
Daily washing and cleaning of the brew funnel and decanter after each use is required.
Occasionally, wipe the outside of the brewer, including the area above the funnel, with
mild, no citrus added dish soap and a damp cloth. The brew funnel and decanter are top
rack dishwasher safe. Please see page 9 for instructions on cleaning your thermal carafe.
DELIMING
You should delime your BUNN brewer to clear any deposits that may have accumulated
due to impurities in the water source. The frequency of deliming depends on the mineral
content of your water.
NOTE - Unplug the brewer and let it cool down before deliming.
1. Remove the sprayhead by turning with your fingertips and set it aside.
2. Insertallbuttwoinchesoftheexibledelimingtool(supplied)intothesprayhead
tube. Call 800-352-2866 or visit www.bunn.com for a replacement deliming tool.
3. Slidethetoolinandoutveorsixtimestoloosenlimeinthesprayheadtube.You
may need to twist, push and use some force when inserting the tool, then remove.
4. Prior to replacing sprayhead, pour one decanter of fresh water into the brewer.
Position empty decanter on the brewer and close the lid. Water will flow into decanter.
5. Check the holes of the sprayhead. If plugged with mineral deposits or white flakes,
they may be cleared by using a toothpick. Clean the sprayhead with a cloth and mild
detergent. Rinse the sprayhead with water, then reinstall. Empty water from decanter.
6. Plug in the brewer and allow the water in the tank to reheat before using
(approximately15minutes).
PERIODIC CLEANING
You should clean your BUNN brewer at least every 3 months. The frequency of cleaning
depends on the mineral content of your water.
1. Slide an empty brew funnel into the brewer under the sprayhead and center an empty
decanter on the base plate.
2. Open the lid and pour one quart of white vinegar into the top of the brewer; close the
lid. Empty the decanter when liquid stops flowing from the funnel.
3. Allow the brewer to sit plugged in for two hours.
4. Unplug the brewer. Remove the brew funnel and sprayhead from the brewer. Clean
the sprayhead with a cloth and mild detergent.
5. To drain the brewer, continue to Step 6, OR to clear vinegar out of brewer without
draining, pour a decanter of fresh, cold water through the brewer. With funnel in
place, position decanter on base plate, then close the lid to allow the water to run
through the brewer. After it has run through, empty decanter and repeat the process
approximately8-10times.
Proceed to Step 9.