Bunn DUAL Instruction Manual

DUAL™
prior to S/N DUAL010000
CAUTION: WARMERS AND SURFACES ARE HOT
CAUTION
DISCARD DECANTER
IF:
.CRACKED
.SCRATCHED
.BOILEDDRY
.HEATED WHEN EMPTY
.USED ON HIGH FLAME
.OR EXPOSEDELECTRIC
ELEMENTS
FAILURE TO COMPLY RISKS INJURY
PN:658 1985BUNN-O-MATIC CORPORATION
FUNNEL CONTENTS
ARE HOT
!
START ON / WARMER SELECTOR READY
READY ON / WARMER START
1
1⁄2
gal
1gal
1⁄2
gal
SELECTOR
1
1⁄2
gal
1gal
1⁄2
gal
!
CAUTIONHOTWATER
GRINDER
L
E
F
T
R
I
G
H
T
DISCONNECT FROM POWER SOURCE
BEFORE REMOVAL OF ANY PANEL OR
REPLACEMENT OF ANY COMPONENT!
WARNING
!
ILLUSTRATED PARTS CATALOG
Designs, materials, weights, specifications, and dimensions for equipment or replacement parts
are subject to change without notice.
BUNN-O-MATIC CORPORATION
POST OFFICE BOX 3227
SPRINGFIELD, ILLINOIS 62708-3227
PHONE: [phone] FAX: [phone]
www.bunnomatic.com
10780.0000 07/05 ©1994 Bunn-O-Matic Corporation

2
WARRANTY
Bunn-O-Matic Corp. (“Bunn”) warrants the equipment manufactured by it to be commercially free from
defects in material and workmanship existing at the time of manufacture and appearing within one year from the
date of installation. In addition:
1.) Bunn warrants electronic circuit and/or control boards to be commercially free from defects in material
and workmanship for three years from the date of installation.
2.) Bunn warrants the compressor on refrigeration equipment to be commercially free from defects in mate-
rial and workmanship for two years from the date of installation.
3.) Bunn warrants that the grinding burrs on coffee grinding equipment will grind coffee to meet original
factory screen sieve analysis for three years from date of installation or for 30,000 pounds of coffee, whichever
comes first.
This warranty does not apply to any equipment, component or part that was not manufactured by Bunn or
that, in Bunn’s judgement, has been affected by misuse, neglect, alteration, improper installation or operation,
improper maintenance or repair, damage or casualty.
THE FOREGOING WARRANTY IS EXCLUSIVE AND IS IN LIEU OF ANY OTHER WARRANTY, WRITTEN OR
ORAL, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF EITHER
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. The agents, dealers or employees of Bunn are
not authorized to make modifications to this warranty or to make additional warranties that are binding on Bunn.
Accordingly, statements by such individuals, whether oral or written, do not constitute warranties and should not
be relied upon.
The Buyer shall give Bunn prompt notice of any claim to be made under this warranty by telephone at (217)
529-6601 or by writing to Post Office Box 3227, Springfield, Illinois, 62708-3227. If requested by Bunn, the
Buyer shall ship the defective equipment prepaid to an authorized Bunn service location. If Bunn determines, in
its sole discretion, that the equipment does not conform to the warranty, Bunn shall repair the equipment with no
charge for parts during the warranty period and no charge for labor by a Bunn Authorized Service Representative
during the warranty period. If Bunn determines that repair is not feasible, Bunn shall, at its sole option, replace
the equipment or refund the purchase price for the equipment.
THE BUYER’S REMEDY AGAINST BUNN FOR THE BREACH OF ANY OBLIGATION ARISING OUT OF THE
SALE OF THIS EQUIPMENT, WHETHER DERIVED FROM WARRANTY OR OTHERWISE, SHALL BE LIMITED, AS
SPECIFIED HEREIN, TO REPAIR OR, AT BUNN’S SOLE OPTION, REPLACEMENT OR REFUND.
In no event shall Bunn be liable for any other damage or loss, including, but not limited to, lost profits, lost
sales, loss of use of equipment, claims of Buyer’s customers, cost of capital, cost of down time, cost of substi-
tute equipment, facilities or services, or any other special, incidental or consequential damages.
10780 050201

TABLE OF CONTENTS
Base - Trunk - Hood - Covers & Panels ..................................................................................................................................... 4
Dispense Valve and Sprayhead ................................................................................................................................................ 26
Electrical Controls & Ready Light............................................................................................................................................. 30
Faucet - Upper & Lower ........................................................................................................................................................... 28
Funnels .................................................................................................................................................................................... 36
Numerical Index ....................................................................................................................................................................... 38
Single Set Timers & Electronic Control .................................................................................................................................... 12
Single Set Timers & Mechanical Thermostat ............................................................................................................................. 8
Strainer/Flow Control - Solenoid & Lines ................................................................................................................................. 20
Tank and Mounting Brackets.................................................................................................................................................... 18
Tank Heater & Safety Devices .................................................................................................................................................. 16
Triple Set Timers & Electronic Control ..................................................................................................................................... 14
Triple Set Timers & Mechanical Thermostat ............................................................................................................................ 10
Warmer Assemblies ................................................................................................................................................................. 34
Water By-Pass (Mechanical & Electro/Mechanical) ................................................................................................................. 24
310780 032200

4
DUAL
BUNN
®
BASE - TRUNK - HOOD - COVERS & PANELS
!
HOTWATER
STARTON/WARMERSELECTORREADY
READYON/WARMERSTART
1
1⁄2
gal
1gal
1⁄2
gal
SELECTOR
1
1⁄2
gal
1gal
1⁄2
gal
CAUTION
DISCARDDECANTER
IF:
.CRACKED
.SCRATCHED
.BOILED DRY
.HEATED WHEN EMPTY
.USED ON HIGH FLAME
.OR EXPOSED ELECTRIC
ELEMENTS
FAILURETOCOMPLYRISKSINJURY
PN:6581985BUNN-O-MATICCORPORATION
FUNNELCONTENTS
AREHOT
!
!
CAUTIONHOTWATER
GRINDER
L
E
F
T
R
I
G
H
T
DISCONNECTFROMPOWERSOURCE
BEFOREREMOVALOFANYPANELOR
REPLACEMENTOF ANY COMPONENT!
WARNING
!
3
1
2
4
5
6
7
12
27
10
11
13
14
15
16
P-301
26
8
9
23
21
20
22
24
19
18
17
25
10780 062100

ITEM PART NO. QTY. DESCRIPTION
5
BASE - TRUNK - HOOD - COVERS & PANELS
1 25376.0000 1 Cover Assy, Top (Includes items 2 & 3)
02336.0000 4 Screw, Truss Head 4 - 40 x .38"
2 25151.0000 2 Shield, Insulator
3 10044.0000 1 Decal, Shut Off Power
4 22313.0000 1 Hood W/Decals (W/O Upper Faucet)
22313.0001 1 Hood W/Decals (W/O Upper Faucet & W/O Selector Switches)
22313.0002 1 Hood W/Decals (W/Upper Faucet & Selector Switches)
22313.0003 1 Hood W/Decals (W/Upper Faucet - W/O Selector Switches)
22313.0004 1 Hood W/Decals (W/Upper Faucet - W/one Grinder Interface)(Shown)
22313.0005 1 Hood W/Decals (W/O Upper Faucet - W/one Grinder Interface)
02308.0000 16 Screw, Pan Head 8 - 32 x .375"
5 20966.0000 1 Decal, Control Panel (W/O Upper Faucet)
20966.0001 1 Decal, Control Panel (W/O Upper Faucet & W/O Selector Switches)
20966.0002 1 Decal, Control Panel (W/Upper Faucet & Selector Switches)
20966.0003 1 Decal, Control Panel (W/Upper Faucet - W/O Selector Switches)
20966.0004 1 Decal, Control Panel (W/Upper Faucet - W/one Grinder Interface)(Shown)
20966.0005 1 Decal, Control Panel (W/O Upper Faucet - W/one Grinder Interface)
6 20201.5600 1 Decal, Caution Hot Water
7 24396.0000 1 Trunk W/Decals (120V)
24396.0001 1 Trunk W/Decals (120/240V, 200V & 230V)
8 00656.0000 1 Decal, Comply to Plumbing Code
9 00831.0000 1 Decal, Warning - Electrical
10 22314.0000 1 Panel W/Decals, Trunk (200V & 230V) (Includes items 11)
22314.0001 1 Panel W/Decals, Trunk (W/Mech. Thermostat)
22314.0002 1 Panel W/Decals, Trunk (W/Electronic Control)
22314.0003 1 Panel W/Decals, Trunk (W/Single Interface & Mech. Thermostat)
22314.0004 1 Panel W/Decals, Trunk (W/Single Interface & Electronic Control)
01382.0003 5 Screw, Truss Head 6 - 32 x .375"
11 00658.0000 1 Decal, Caution - Decanter/Funnel
12 10567.0000 1 Schematic (120V & 120/240V W/Mechanical Thermostat)
10567.0002 1 Schematic (120/240V W/Electronic Control)
10567.0004 1 Schematic (120V & 120/240V W/one Grinder Interface & Mechanical Thermostat)
10567.0005 1 Schematic (120/240V W/one Grinder Interface & Electronic Control)
13 24458.0000 1 Base W/Decal (Includes items 8,14 & 15)
02308.0000 8 Screw, Pan Head 8 - 32 x .375"
14 20201.5600 1 Decal, Caution Hot Water
15 00619.0007 1 Plug, Hole .50" Dia. (Not used W/Lower Faucet)
16 20916.0000 1 Cover, Bottom
02308.0000 12 Screw, Pan Head 8 - 32 x .375"
17 00619.0008 2 Plug, Hole 2.0" Dia.
18 03011.0000 6 Plug, Vent 1.0" Dia.
(continued)
Includes items
5 &6
Includes item 9
Includes items
11 & 12
10780 062100

6
DUAL
BUNN
®BASE - TRUNK - HOOD - COVERS & PANELS
(continued)
10780 032200
!
HOTWATER
STARTON/WARMERSELECTORREADY
READYON/WARMERSTART
1
1⁄2
gal
1gal
1⁄2
gal
SELECTOR
1
1⁄2
gal
1gal
1⁄2
gal
CAUTION
DISCARDDECANTER
IF:
.CRACKED
.SCRATCHED
.BOILED DRY
.HEATED WHEN EMPTY
.USED ON HIGH FLAME
.OR EXPOSED ELECTRIC
ELEMENTS
FAILURETOCOMPLYRISKSINJURY
PN:658 1985BUNN-O-MATIC CORPORATION
FUNNELCONTENTS
AREHOT
!
!
CAUTIONHOTWATER
GRINDER
L
E
F
T
R
I
G
H
T
DISCONNECTFROM POWERSOURCE
BEFOREREMOVALOFANY PANEL OR
REPLACEMENTOF ANY COMPONENT!
WARNING
!
3
1
2
4
5
6
7
12
27
10
11
13
14
15
16
P-301
26
8
9
23
21
20
22
24
19
18
17
25

ITEM PART NO. QTY. DESCRIPTION
7
19 03359.0000 4 Leg, 4.0" Plastic (Shown)
00502.0000 4 Leg, 4.0" Nickel
00506.0000 4 Leg, 8.0" SST
20 24455.0004 1 Warmer Panel Assy W/Decal (Includes items 21, 22, 23 & 01311.0000 Screws)
01382.0003 4 Screw, Truss Head 6 - 32 x .375"
21 12364.0000 1 Decal, Caution-Warmers are Hot
22 21106.0000 1 Angle, Support
01311.0000 4 Screw, Truss Head 8 - 32 x .25"
23 02324.0000 4 Nut, Acorn 8 - 32
24 00671.0000 2 Plug, Hole .312" Dia.
25 00619.0005 1 Plug, Hole 1.06" Dia.
26 00916.0000 4 Clip, J-Type #4-40
27 32540.0000 1 Decal, Timer Setting Instruction
BASE - TRUNK - HOOD - COVERS & PANELS
10780 072805

8
DUAL
BUNN
®
.
MINUTES
BUNN-O-MATIC
P/N 2620- 120 VAC
.
MINUTES
BUNN-O-MATIC
P/N 2620- 120 VAC
TL5
TL4
TL3
TL2
TL1
J2
J1
SET LOCK
LOCK
SET
TL5
TL4
TL3
TL2
TL1
J2
J1
SET LOCK
LOCK
SET
SINGLE SET TIMERS & MECHANICAL THERMOSTAT
1
2
3
4
6
7
8
Replacement
Part
5
P-302
10780 062100
Early Models
4
FIRST TYPE
3

ITEM PART NO. QTY. DESCRIPTION
9
SINGLE SET TIMERS & MECHANICAL THERMOSTAT
1 20948.0001 1 Bracket, Component Mounting
02308.0000 4 Screw, Pan Head #8 - 32 x .375"
2 01533.0000 4 Spacer, Nylon .375"
3 02620.1040 2 Timer, 8 Min. 120V
02620.1041 2 Timer, 8 Min. 240V
32400.0002 2 Timer, Digital 120V
32400.0003 2 Timer, Digital 240V
01347.0000 4 Screw, Truss Head #6 - 32 x .375" (Not used with Digital Timer)
01510.0000 4 Lockwasher, External Tooth #6
01388.0000 4 Screw, Truss Head #6 - 32 x .75"
4 04314.0001 1 Thermostat Assy (Includes items 5,7 & 8)(Late Models)(Also replaces
early model thermostat)
02308.0000 1 Screw, Pan Head #8 - 32 x .375"
20762.0000 2 Screw, Binding Head #8-32 x .25" (Terminal Screw)
5 07073.0000 1 Grommet, Thermostat
6 07074.1026 1 Control Board, Level (120/208V & 120/240V models)
07074.1027 1 Control Board, Level (200V & 240V models)
02308.0000 2 Screw, Pan Head #8 - 32 x .375"
01511.0000 2 Lockwasher, External Tooth #8
7 00720.0000 1 Knob, Thermostat
8 28377.0000 1 Noise Suppressor (Not used with Digital Timer)
10780 110501
First Type
Second Type

10
DUAL
BUNN
®
TL5
TL4
TL3
TL2
TL1
J2
J1
SET LOCK
LOCK
SET
TL5
TL4
TL3
TL2
TL1
J2
J1
SET LOCK
LOCK
SET
TRIPLE SET TIMERS & MECHANICAL THERMOSTAT
1
2
3
4
6
7
8
Replacement
Part
5
P584
10780 062100
Early Models
4
FIRST TYPE
3

ITEM PART NO. QTY. DESCRIPTION
11
TRIPLE SET TIMERS & MECHANICAL THERMOSTAT
1 20948.0001 1 Bracket, Component Mounting
02308.0000 4 Screw, Pan Head 8 - 32 x .375"
2 01533.0000 4 Spacer, Nylon .375"
3 24486.1000 2 Timer, Triple (120/208V & 120/240V models)
24486.1001 2 Timer, Triple (200V - 240V)
32400.0002 2 Timer, Digital (120V)
32400.0003 2 Timer, Digital (240V)
01347.0000 4 Screw, Truss Head 6 - 32 x .375" (Not used with Digital Timer)
01510.0000 4 Lockwasher, External Tooth #6
01388.0000 4 Screw, Truss Head 6 - 32 x .75"
4 04314.0001 1 Thermostat Assy (Includes items 5,7 & 8)(Late Models)(Also replaces
early model thermostat)
02308.0000 1 Screw, Pan Head #8 - 32 x .375"
20762.0000 2 Screw, Binding Head #8-32 x .25" (Terminal Screw)
5 07073.0000 1 Grommet, Thermostat
6 07074.1026 1 Control Board, Level (120/208V & 120/240V models)
07074.1027 1 Control Board, Level (200V & 240V models)
02308.0000 2 Screw, Pan Head #8 - 32 x .375"
01511.0000 2 Lockwasher, External Tooth #8
7 00720.0000 1 Knob, Thermostat
8 28377.0000 1 Noise Suppressor (Not used with Digital Timer)
10780 110501
First Type
Second Type

12
DUAL
BUNN
®
OFF
O
N
CAUTION
!
Failure To Comply Voids Warranty!
Hot Water Systems – Water Tank Will Fill
Automatically When Unit Is Connected To Power!
Coffee Brewers – Fill The Water Tank In
Accordance With The Installation Instructions!
DO NOT
Turn On The Tank Heater Switch
Until Water Comes From Opened Faucet!
HAZARDOUS
VOLTAGE
DISCONNECT FROM
POWER SOURCE
BEFORE REMOVING!
WARNING
STOP
READ NOTICE
.
MINUTES
BUNN-O-MATIC
P/N 2620- 120 VAC
.
MINUTES
BUNN-O-MATIC
P/N 2620- 120 VAC
TL5
TL4
TL3
TL2
TL1
J2
J1
SET LOCK
LOCK
SET
TL5
TL4
TL3
TL2
TL1
J2
J1
SET LOCK
LOCK
SET
SINGLE SET TIMERS & ELECTRONIC CONTROL
1
2
3
4
5
6
7
8
9
P-303
10780 062100
FIRST TYPE
3

ITEM PART NO. QTY. DESCRIPTION
13
SINGLE SET TIMERS & ELECTRONIC CONTROL
1 20948.0001 1 Bracket, Component Mounting
02308.0000 4 Screw, Pan Head 8 - 32 x .375"
2 01533.0000 4 Spacer, Nylon .375"
3 02620.1040 2 Timer, 8 Min. 120V (Shown)
02620.1041 2 Timer, 8 Min. 240V
32400.0002 2 Timer, Digital (120V)
32400.0003 2 Timer, Digital (240V)
01347.0000 4 Screw, Truss Head 6 - 32 x .375" (Not used with Digital Timer)
01510.0000 4 Lockwasher, External Tooth #6
01388.0000 4 Screw, Truss Head 6 - 32 x .75"
4 21122.0000 1 Bracket, Electronic Control Mounting
02308.0000 2 Screw, Pan Head 8 - 32 x .375"
5 12560.0015 1 Control Assy, Electronic (Includes items 6 thru 9)
02308.0000 2 Screw, Pan Head 8 - 32 x .375"
6 04786.0002 1 Switch, On/Off
7 12559.0000 1 Decal, Caution/Warning
8 00619.0002 1 Plug, Hole .250" Dia.
9 12570.0000 1 Grommet, Temp. Sensor
10780 110501
First Type
Second Type

14
DUAL
BUNN
®
TL5
TL4
TL3
TL2
TL1
J2
J1
SET LOCK
LOCK
SET
TL5
TL4
TL3
TL2
TL1
J2
J1
SET LOCK
LOCK
SET
TRIPLE SET TIMERS & ELECTRONIC CONTROL
1
2
3
4
5
6
7
8
9
P635
10780 062100
FIRST TYPE
3

ITEM PART NO. QTY. DESCRIPTION
15
TRIPLE SET TIMERS & ELECTRONIC CONTROL
1 20948.0001 1 Bracket, Component Mounting
02308.0000 4 Screw, Pan Head 8 - 32 x .375"
2 01533.0000 4 Spacer, Nylon .375"
3 24486.1000 2 Timer, Triple (120/208V & 120/240V models)
24486.1001 2 Timer, Triple (200V - 240V)
32400.0002 2 Timer, Digital (120V)
32400.0003 2 Timer, Digital (240V)
01347.0000 4 Screw, Truss Head 6 - 32 x .375" (Not used with Digital Timer)
01510.0000 4 Lockwasher, External Tooth #6
01388.0000 4 Screw, Truss Head 6 - 32 x .75"
4 21122.0000 1 Bracket, Electronic Control Mounting
02308.0000 2 Screw, Pan Head 8 - 32 x .375"
5 12560.0015 1 Control Assy, Electronic (Includes items 6 thru 9)
02308.0000 2 Screw, Pan Head 8 - 32 x .375"
6 04786.0002 1 Switch, On/Off
7 12559.0000 1 Decal, Caution/Warning
8 00619.0002 1 Plug, Hole .250" Dia.
9 12570.0000 1 Grommet, Temp. Sensor
10780 110501
First Type
Second Type

16
DUAL
BUNN
®TANK HEATER & SAFETY DEVICES
4 5 1 6 7 8 2 9
3
2
6
7
13
12
11
10
14
15
16
18
19
17
P-304
10780 010604
8 2 9
Early Models

ITEM PART NO. QTY. DESCRIPTION
17
1 29329.1000 1 Thermostat, Limit
2 02536.0000 3 Grommet .375" I.D.
3 20936.1000 1 Probe Kit (Includes item 5 & 01501.0000 Washer)
01501.0000 1 Washer .164" I.D. x .375" O.D.
4 20203.0100 1 Lockwasher, Internal Tooth #8
5 00908.0000 1 Nut, Hex 8 - 32
6 20922.1000 2 Tank Heater, 3300W @ 240V
20922.1001 2 Tank Heater, 1650W @ 120V
20922.1002 2 Tank Heater, 2850W @ 208V
00908.0000 8 Nut, Hex 8 - 32
7 12398.0000 2 Gasket, Tank Heater
8 - - - - - - - - 1 Tube Assy, Vent (First Type, not available. Order Second Type)
26622.0001 1 Tube Assy, Vent (Second Type)
9 - - - - - - - - 1 Bracket, Overflow Cup Mounting (First Type, not available. Order Second Type)
26619.0000 1 Bracket, Overflow Cup Mounting (Second Type)
10 03803.0000 1 Switch Assy, Liquid Level (Includes items 11, 12 & 13)
00946.0000 1 Nut, Hex .125" FPT
11 03633.0000 2 Gasket, Float Switch (Only 1 used in this application)
12 - - - - - - - - 3 Washer, Adjusting (DO NOT USE IN THIS APPLICATION)
13 03807.0000 1 Clip, Spring
14 12552.0000 1 Overflow Cup Assy
00965.0000 2 Nut, Zip 8 - 32
15 12422.0000 1 Clamp, Hose .47"/.54" I.D.
16 - - - - - - - - 1 Tube, Silicone .312" I.D. x 21.50" (Order item 21)
17 12527.0002 1 Triac/Heat Sink Assy (Includes items 18, 19 & 20)
00971.0000 1 Nut, Keps 10 - 32
18 12397.0000 1 Heat Sink, Copper
19 12565.0002 1 Triac Assy, 40 AMP
02328.0003 1 Screw, Pan Head 6 - 32 x .312"
01520.0000 1 Lockwasher, Split #6
20 M2522.1000 - Heat Sink Compound
21 03236.1001 - Tube, Silicone .312" I.D. x 36.0"
TANK HEATER & SAFETY DEVICES
Not Illustrated
For Electronic
Control only
10780 032200

18
DUAL
BUNN
®TANK AND MOUNTING BRACKETS
1
2
3
4
5
6
7
P-305
10780 032200

ITEM PART NO. QTY. DESCRIPTION
19
TANK AND MOUNTING BRACKETS
1 - - - - - - - - 2 Bracket, Tank Support (Early Models. Not available, order Late Model bracket))
26826.0000 1 Bracket, Tank Support (Late Models)
01315.0000 2 Screw, Truss Head 8 - 32 x .375"
00908.0000 4 Nut, Hex 8 - 32
2 20881.0000 1 Lid, Tank
00908.0000 14 Nut, Hex 8 - 32
3 20883.0000 1 Gasket, Tank
4 20951.1000 1 Tank
5 20201.6001 1 Plug, Pipe .25" NPT (Not used with faucet models)
6 20201.2600 1 Bracket, Tank Mounting (Bottom) (Mechanical Thermostat & Electronic Control)
00971.0000 2 Nut, Keps 10 - 32
02308.0000 4 Screw, Pan Head 8 - 32 x .375"
7 20201.2600 1 Bracket, Tank Mounting (Bottom) (Mechanical Thermostat) (Shown)
20201.2601 1 Bracket, Tank Mounting (Bottom) (Electronic Control)
00971.0000 2 Nut, Keps 10 - 32
02308.0000 4 Screw, Pan Head 8 - 32 x .375"
10780 032200

20
DUAL
BUNN
®
BUNN
90 psig max operating pressure
Strainer/Flow Control # 22300.0750
(Repl. Flow Washer #20526.0750)
(Repl. Screen #23721.0000)
.500 gpm FLOW
BUNN
90 psig max operating pressure
BOM Strainer # 22250.1000
FLOW
STRAINER/FLOW CONTROL - SOLENOID & LINES
1 2 3 4
5
6
7
17
P-306
19
20
21
22
23
24
25
18
8
10
9
11
12
13
14
15
16
32
31
30
29
28
27
37
36
35 34
33
26
17
FIRST TYPE
10780 032200