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Electrical Connection and Ladder Diagram
7.1-1
1
Wiring
Diagrams
The wiring diagrams on the following pages are provided to
give the qualified service person information on the
interconnection and sequence of operation of the electrical
components of various models of L. B. White hot-surface
ignition heaters.
On more current models, typical location is the interior of the
fan and motor access panel. Earlier models will have the
diagram on the burner end panel, or within the “Master
Control” panel.
Although the wiring diagrams appear to be the same, be
aware there are differences in the color coding of the
component interconnecting wiring. Also, the ignition control
module of specific models may have different wiring
designators.
To be sure of what diagram to use, always obtain the heater's
model number and design sequence. This information is
identified on the heater’s dataplate. For earlier design
heaters, the design sequence will be shown as the 6th digit
of the model number. For heaters manufactured more
recently, the dataplate will identify a configuration number.
The design sequence is the first digit of the configuration
number. Match this information to the models and designs
given at the top of each of the following pages within this
section.
The part number of the wiring diagram varies with model
number and design sequence. Contact L.B. White Co., Inc.
ATTENTION
If any of the original wire as supplied with the heater must be
replaced, it must be replaced with wiring material having a
temperature rating of at least 302° F. (150° C.)
August 1999
CAUTION
Refer to the heater’s electrical connection diagram when
servicing to avoid wiring errors and heater malfunction.
Check for proper operation after servicing.
Without C
Configuration N
Number
MODEL AW075EHP3
SERIAL NO.:
L. B. WHITE CO., INC. W6636 L.B. WHITE ROAD ONALASKA, WI 54650 608/783-5691
A
G S
DESI GN
CERTIFI ED
A
A
A
MERI C N
SSOC
I ATI
ON
MAXIMUM INPUT: 75,000 BTUH
TYPE FUEL: PROPANE VAPOR WITHDRAWAL
BURNER MANIFOLD PRESSURE 11 IN W.C. AT MAXIMUM INPUT
ELECTRICAL: 115 VOLTS A.C. 60 HZ SINGLE PHASE 1.4 AMPS
MIN. CLEARANCES FROM HEATER TO ADJACENT COMBUSTIBLE MATERIALS: REAR 1 FT SIDES 1 FT
TOP TO CEILING 1 FT BLOWER OUTLET 6 FT AND FUEL CONTAINER 6 FT
VENTILATION: 450 CFM OF AIR REQUIRED TO SUPPORT COMBUSTION.
MAXIMUM 13.5 INCHES W.C. AND MINIMUM 11.5 INCHES W.C. GAS SUPPLY PRESSURE
ACCEPTABLE AT INLET 0F HEATER FOR PURPOSE OF INPUT ADJUSTMENT.
POSITION HEATER AWAY FROM LIVESTOCK
AGRICULTURAL BUILDING HEATER
D
Daattaappllaattee C
Coom
mppaarriissoonn
With C
Configuration N
Number
MODEL AW060
CONFIGURATION NO. AHPD210000
SERIAL NO.:
L. B. WHITE CO., INC. W6636 L.B. WHITE ROAD ONALASKA, WI 54650 608/783-5691
A
G S
DESI GN
CERTIFI ED
A
A
A
MERI C N
SSOCIATI O
N
MAXIMUM INPUT: 60,000 BTUH
TYPE FUEL: PROPANE VAPOR WITHDRAWAL
BURNER MANIFOLD PRESSURE 10.0 IN W.C. AT MAXIMUM INPUT
ELECTRICAL: 115 VOLTS A.C. 60 HZ SINGLE PHASE 1.5 AMPS
MIN. CLEARANCES FROM HEATER TO ADJACENT COMBUSTIBLE MATERIALS: REAR 1 FT SIDES 1 FT
TOP TO CEILING 1 FT BLOWER OUTLET 6 FT AND FUEL CONTAINER 6 FT
VENTILATION: 240 CFM OF AIR REQUIRED TO SUPPORT COMBUSTION.
MAXIMUM 13.5 INCHES W.C. AND MINIMUM 11.5 INCHES W.C. GAS SUPPLY PRESSURE
ACCEPTABLE AT INLET 0F HEATER FOR PURPOSE OF INPUT ADJUSTMENT.
POSITION HEATER AWAY FROM LIVESTOCK
AGRICULTURAL BUILDING HEATER
Design
Sequence
Design
Sequence
AHPD210000