Dayton | 6BY70 | Operating instructions | Dayton 6BY70 Operating instructions

Operating Instructions and Parts Manual
6BY70 and 6BY72
Please read and save these instructions. Read carefully before attempting to assemble, install, operate or
maintain the product described. Protect yourself and others by observing all safety information. Failure to
comply with instructions could result in personal injury and/or property damage! Retain instructions for
future reference.
Dayton® Natural Gas Radiant
Construction Heaters
Description
Dayton Model 6BY70 is a 125,000 Btu/Hr construction heater.
Dayton Model 6BY72 is a 250,000 Btu/Hr construction heater.
These heaters use natural gas for combustion and are intended for
indoor use only and the temporary heating of well-ventilated buildings under construction, alteration, or repair. These heaters should
never be used in occupied dwellings. Products of combustion are
vented into the area being heated.
Figure 1 - Model 6BY70
Figure 2 - Model 6BY72
Unpacking
Model 6BY70 Only
Form 5S5383
1. Remove all packing items
applied to heater for shipment. Keep plastic cover
caps (attached to valve inlet
and regulator assembly) for
storage.
2. Remove all items from carton.
3. Check all items for shipping damage. If heater is
damaged, promptly inform
dealer where you bought
heater.
Printed in China or Mexico
09663
1105/382/VCPVP
General hazard
warning
Failure to comply
with the precautions and instructions provided with
this heater, can
result in death, serious bodily injury
and property loss
or damage from
hazards of fire,
explosion, burn,
asphyxiation, carbon monoxide
poisoning and/or
electrical shock.
Only persons who
can understand and
follow the instructions should use or
service this heater.
If you need assistance or heater information such as an
instructions manual,
labels, etc. contact
the manufacturer.
DES003 117163-01
05/05 Rev. D
11/05
Dayton Operating Instructions and Parts Manual
6BY70 and 6BY72
Dayton Natural Gas Radiant
Construction Heaters
®
General Safety
Information
Make certain you read and
understand all warnings. Keep
these instructions for reference.
They are your guide to safe and
proper operation of this heater.
Safety information appears
throughout these instructions. Pay close attention to
them. Below are definitions for
the safety information listed
throughout this manual.
Under this heading, installation,
operating and maintenance
procedures or practices will
be found that, if not carefully followed, WILL result in
IMMEDIATE serious personal
injury or death.
Under this heading, installation,
operating, and maintenance
procedures or practices will be
found that, if not carefully followed, COULD result in severe
personal injury or death.
Under this heading, installation,
operating, and maintenance
procedures or practices will be
found that, if not carefully followed, MAY result in minor personal injury, product or property
damage.
IMPORTANT: Not every possible
circumstance that might involve
a hazard can be anticipated. The
warnings in this manual and on
tags or decals affixed to the unit
are therefore not all-inclusive. If
a procedure, work method, or
operating technique not specifically recommended by Dayton is
used, you must make sure it is
safe for you and others. You
should also ensure that equipment will not be damaged or
made unsafe by the operating or
maintenance method you choose.
Not for home or recreational vehicle use.
This product contains
and/or generates chemicals known to the State
of California to cause
cancer or birth defects, or
other reproductive harm.
Fire, burn, inhalation
and explosion hazard.
Keep solid combustibles, such as building
materials, paper or
cardboard, a safe distance away from the
heater as recommended by the instructions.
Never use the heater
in spaces which do or
may contain volatile or
airborne combustibles
or products such as gasoline, solvents, paint
thinner, dust particles
or unknown chemicals.
For 125,000 Btu models, do not exceed 1/2
psi (14" w.c.) gas pressure to the gas control
valve.
The heater is designed for use as
a construction heater in accordance with ANSI Z83.7/CGA
2.14. Other standards govern
the use of fuel gases and heating products for specific uses.
Your local authority can advise
you about these. The primary
purpose of construction heaters
is to provide temporary heating
of buildings under construction,
alteration or repair. Properly
used, the heater provides safe
economical heating. Products of
combustion are vented into the
area being heated.
We cannot foresee every use
which may be made of our heaters. Check with your local fire
safety authority if you have
questions about heater use.
Carbon Monoxide Poisoning:
Some people are more affected
by carbon monoxide than others. Early signs of carbon monoxide poisoning resemble the flu,
with headaches, dizziness and/or
nausea. If you have these signs,
the heater may not be working
properly. Get fresh air at once!
Check for proper ventilation and
have heater serviced.
Natural Gas: Natural gas is odorless. An odor-making agent is
added to this gas. The odor helps
you detect a gas leak. However,
the odor added to the gas can
Dayton Operating Instructions and Parts Manual
Models 6BY70 and 6BY72
General Safety
Information (Continued)
fade. Gas may be present even
though no odor exists.
Make certain you read and
understand all warnings. Keep
this manual for reference. It is
your guide to safe and proper
operation of this heater.
1.Install and use heater with
care. Follow all local ordinances and codes. In the
absence of local ordinances
and codes, refer to the
National Fuel Gas Code
Handbook, ANSI Z223.1/
NFPA 54. This instructs on
the safe storage and handling of flammable gases.
2.Use only with natural gas.
Do not attempt to use with
propane gas.
3.Use only the factory preset
regulator provided with the
heater.
4.Provide adequate ventilation. Before using heater,
provide at least a 0.28 m2
(3 ft2) opening of fresh,
outside air for each
100,000 Btu/hr of rating.
[Or for 125,000 Btu/hr
models 0.35 m2 (3.75 ft2)
and 250,000 Btu/hr models
0.7 m2 (7.5 ft2).]
5.For indoor use only. Do not
use heater outdoors.
6.Do not use heater in occupied dwellings or in living
or sleeping quarters.
7.Do not use heater in basement or below ground level.
8.Keep appliance area clear
and free from combustible
materials, gasoline, paint
thinner and other flammable vapors and liquids. Dust
is combustible. Do not use
heater in areas with high
dust content.
9.Minimum heater clearances
from combustibles
125,000 Btu/Hr: Sides 1.54 m
(5 ft), Top 1.22 m (4 ft)
250,000 Btu/Hr: Sides 1.83 m
(6 ft), Top 1.54 m (5 ft)
10.Check heater for damage
before each use. Do not
use a damaged heater.
11.Check hose (if used) before
each use of heater. If highly
worn or cut, replace.
12.Locate heater on stable
and level surface if heater
is hot or operating.
13.Not intended for use on
finished floors.
14.Never block any air inlet
or air outlet openings of
heater.
15.Keep heater away from
strong drafts, wind, water
spray, rain or dripping water.
16.Do not leave heater unattended.
17.Keep children and animals
away from heater.
18.To prevent burns, remove
handle before operating
heater (6BY70 only).
19.Never move, handle or
service a hot or operating
heater. Severe burns may
result. Wait 20 minutes
after turning heater off.
20.To prevent injury, wear gloves
when handling heater.
21.Never attach duct work to
heater.
22.Do not alter heater. Keep
heater in its original state.
23.Do not use heater if
altered.
24.Turn off gas supply to
heater when not in use.
25.Use only original replacement parts. This heater must
use design-specific parts. Do
not substitute or use generic
parts. Improper replacement
parts could cause serious or
fatal injuries.
Product Identification
Top
Protective
Screen
Combustion
Chamber
Cover
Lighting
Port
Control Knob
Figure 3 - 125,000 Btu/Hr Model (6BY70)
Dayton Operating Instructions and Parts Manual
6BY70 and 6BY72
Dayton Natural Gas Radiant
Construction Heaters
®
Product Identification (Continued)
The Fuel System: The gas supply
Top
Shell
attaches to the heater through
user supplied hose or pipe. This
provides fuel to the heater.
The Ignition System: The ignitor
lights the burner fuel supply.
The Automatic Control System:
Emitter
This system causes the heater to
shut down if the flame goes out.
Ignitor
Electrode
Pilot Burner
Nozzle
Thermocouple
Main
Burner
Tube
Base
Shell
Ignitor
Main
Burner
Valve
Handle
Valve Inlet
Automatic
(1/2" SAE
Control
Valve Button Flare)
Theory of Operation
Base
Regulator/Fuel
Tube Assembly
Installed
Figure 4 - 250,000 Btu/Hr Model (6BY72)
Natural Gas Supply
The user must furnish the natural gas supply and the connections to the heater.
For 125,000 Btu/Hr models,
regulate the natural gas supply
between a minimum 7" w.c. to a
maximum of 1/2 psi (14" W.C.).
The natural gas supply capacity should be able to supply a
minimum of 125 cubic feet of gas
at pressure for each heater connected to the system.
For 250,000 Btu/Hr models,
regulate the natural gas supply to min. 4 psi. If over 4 psi is
supplied, then use the supplied
regulator on the heater. The natural gas supply capacity should
be able to supply a minimum of
250 cubic feet of gas at pressure
for each heater connected to the
system.
Consult your natural gas supplier
for proper sizing of the natural
gas supply lines.
Follow all local ordinances and
codes. In the absence of local
ordinances and codes, refer
to the National Fuel Gas Code
Handbook, NFPA 54/ANSI Z223.1.
Dayton Operating Instructions and Parts Manual
Models 6BY70 and 6BY72
Specifications
Model 6BY70
• Rating: 125,000 Btu/Hr
• Fuel: Natural Gas Only
• Fuel Consumption: 3.5 m3/hr (125 ft3/hr)
• Manifold Pressure: 1.5 kPa (6" W.C.)
• Min Temperature: -29 °C (-20° F) Surrounding Air Temperature
• Ignitor Gap: 0.195"
Model 6BY72
• Rating: 250,000 BTU/Hr
• Fuel: Natural Gas Only
• Fuel Consumption: 243 ft3/hr
• Supply Pressure: Max. (to regulator) - 200 psi
Min. (to heater) - 4 psi
Max. To Heater Without Regulator - 4 psi
• Manifold Pressure: 3.5 psi
• Ignitor Gap: 0.195"
Ventilation
Installation
Provide at least a 0.28 m2
(3 ft2) opening of
fresh, outside air for
each 100,000 Btu/Hr of
rating while running
heater. If proper fresh,
outside air ventilation
is not provided, carbon
monoxide poisoning can occur. Provide
proper fresh, outside
air ventilation before
running heater.
Test all gas piping and
connections for leaks
after installation or
servicing. Never use an
open flame to check for
a leak. Apply a mixture
of liquid soap and water
to all joints. Bubbles
forming show a leak.
Correct all leaks at once.
Read these instructions
carefully. Read and
adhere to these instructions. Do not allow anyone who has not read
these instructions to
assemble, light, adjust
or operate this heater.
Do not attempt to
operate the heater with
any gas other than that
indicated on the heater
nameplate.
The installation of this appliance must comply with local
and/or Provincial codes or, in
the absence of these codes,
with the National Fuel Gas
Code, ANSI Z223.1 – Latest
Edition or with the current
installation codes.
This heater (including hose and
regulator) must be inspected
before each use and at least
annually by a qualified service
person. If the hose shows evidence of excessive abrasion or
wear or if the hose is cut, it must
be replaced prior to the heater
being put into operation.
Locating Heater
The heater must be located
on a hard, flat, level surface to
minimize the risk of accidental
tipping.
This appliance must be
installed only in locations
where the potential for physical damage to the appliance
(i.e., due to physical contact) is
reduced to a minimum.
The installer must inform the
owner/operator of this appliance that precautions must be
taken to protect the appliance
from physical damage.
This appliance produces radiant heat. Therefore, it must be
located at least 1.8 m (6 ft) away
from any propane/LP gas container and must not be directed
toward any propane/LP gas container within 6 m (20 ft).
The heater must be installed in a
location such that it will not be
exposed directly to water spray,
rain and/or dripping water.
Use of this heater in a draft/
windy area decreases its efficiency. If possible, operate the
unit in a draft free area.
6BY70 and 6BY72
Dayton Operating Instructions and Parts Manual
Dayton Natural Gas Radiant
Construction Heaters
®
Installation (Continued)
Connecting to Gas
Supply
125,000 Btu/Hr Model Only
(6BY70)
Piping must be clean and free
from scale or burrs.
Install regulator supplied with
heater. Connect with 1/2" NPT
nipple to control valve.
Connect the appliance to an
appropriately designed and
installed fuel supply system.
This system must include an
approved manual shutoff valve
which is readily accessible and
is located within 1.8 m (6 ft) of
the appliance. Additionally, a
sediment trap or drip leg must
be located upstream of this
manual shutoff valve. Refer to
the appropriate (natural gas)
installation code noted on page
5. If a flexible connector is used,
it must be of an approved type.
Never use a flame for
gas leak testing.
250,000 Btu/Hr Model only
(6BY72)
1. Provide natural gas supply
system (see Natural Gas
Supply, page 4).
2. Install plumbing from
natural gas supply system
to heater. Provide 4 psi gas
pressure to heater. If gas
supply pressure is over 4
psi, use high pressure regulator (provided).
3. Connect gas supply to
heater using minimum
3/8" i.d. hose. Maximum
hose length is 3 m (10 ft).
4. Connect hose or plumbing
to 1/2" SAE flare fitting at
the valve inlet. Tighten all
fittings with a wrench.
5. Open natural gas supply
valve slowly. Check all connections for leaks. Never
use an open flame to check
for a leak. Apply mixture
of liquid soap and water to
gas joints. Bubbles forming
show a leak that must be
corrected. Correct all leaks
at once.
6. Close natural gas supply
valve.
Installing High Pressure
Regulator (250,000 Btu/Hr
Model Only) (6BY72)
If the inlet supply pressure is
above 4 psi, you must use the
high pressure regulator (supplied). Follow the instructions
below to install regulator.
1. Install pipe or flexible
connector (not supplied)
from gas supply to high
pressure regulator. Pipe or
flexible connector must
be a minimum of 3/8" i.d.
with a maximum length of
3 m (10 ft). Attach pipe or
flexible connector to inlet
of regulator. The female
threads of the regulator are
1/2 NPT. Note: The natural gas supply must deliver
250 CFH of natural gas
2.
3.
4.
5.
6.
7.
8.
at 4 psi pressure for each
heater connected to the
system.
By hand, attach the 1/2"
fuel tube (supplied) to male
connector on regulator (finger tight). By hand, attach
other end of fuel tube to
heater inlet (finger tight).
Position regulator to heater
base below ignitor button
(see illustration). Use 1/420 screws and flat washers
from hardware bag to
attach regulator to heater,
by hand. Orient regulator
so the outlet with male
connector points toward
the heater inlet.
Firmly tighten fuel tube
flare nuts onto each fitting.
Firmly tighten 1/4-20 regulator mounting screws.
Open natural gas supply
valve slowly. Check all connections for leaks. Never use
an open flame to check for a
leak. Apply mixture of liquid
soap and water to gas joints.
Bubbles forming show a
leak that must be corrected.
Correct all leaks at once.
Close natural gas supply
valve.
Follow steps under To Start
Heater, page 8.
Ignitor
Short
Screw
Washers
Regulator
Fuel Tube
Long Screw
Figure 5 - Installing Regulator
Dayton Operating Instructions and Parts Manual
Models 6BY70 and 6BY72
Operating
Instructions
Review and understand the warnings
in the General Safety
Information section on
page 2. They are needed to safely operate
this heater. Follow all
local codes when using
this heater.
If you do not follow
these instructions
exactly, a fire or explosion may result causing property damage,
personal injury or loss
of life.
This appliance is hot during normal operation,
avoid physical contact.
Do not place clothing or
other combustible materials on this appliance.
Model 6BY70 only.
Handle must be
removed before operating heater due to high
temperatures. If left in
place handle will reach
high temperatures and
could cause burns.
DO NOT operate this heater if
any part has been under water.
Call a qualified service technician to inspect the appliance
and to replace any part of the
control system or gas control
valve which has been under
water.
125,000 Btu/Hr Models
only (6BY70)
Removing Handle
1. Remove wire clip securing handle to top edge of
heater.
2. Pull handle upward and
away from heater to
remove. Set aside for
future use.
Lighting Heater
1. Before attempting to light
the heater, smell all around
the heater area for gas.
Turn on the gas supply to
the appliance and check
all fittings and connections
for gas leaks using a mild
soap and water solution.
NEVER use a match to
check for gas leaks. Should
a gas leak occur, shut off
the gas supply to the appliance immediately. Wait a
minimum of five minutes
before repairing the leak.
2. Use only the fuel intended
for this appliance. Check
the appliance rating plate
for the correct fuel information.
3. Turn the control knob
clockwise to the OFF position. See Figure 3, page 3
and Figure 6 for location of
appliance parts.
4. Wait a sufficient length of
time (at least five minutes)
to allow gas which may
have accumulated in burner compartment to escape.
5. Turn on the main gas supply.
6. Turn control knob counterclockwise to the PILOT
position.
7a.Press and turn control knob
counterclockwise to PILOT
position and hold for 1 to
2 minutes. This may take
longer to purge air from
supply hose depending on
length of the hose being
used.
Press red spark ignition
button to light pilot flame
(repeat until pilot lights)
and continue to hold
control knob at PILOT position for 30-60 seconds to
enable pilot light safety
system. Fully turn control
knob to HI position to light
burner.
Once heater is lit, check all
internal gas connections
on unit for leaks (burner,
valves, etc.). Never use an
open flame to check for
a leak. Apply mixture of
liquid soap and water to
gas joints. Bubbles forming
show a leak that must be
corrected. Correct all leaks
at once.
7b.To match light the pilot,
move the lighting hole
cover aside (see Figure 6,
page 8) and place a lighted
match into hole. Press control knob and hold while
lighting and observing pilot
burner. Ensure that pilot
burner ignites from match.
Allow pilot to burn approximately 30 seconds before
releasing control knob. If
pilot does not remain lit,
repeat lighting operation
allowing a longer period of
time before releasing control knob.
Dayton Operating Instructions and Parts Manual
6BY70 and 6BY72
Dayton Natural Gas Radiant
Construction Heaters
®
Operating Instructions
(Continued)
Note: In cases where long
runs of gas supply lines have
been installed ahead of the
appliance, it may be necessary to bleed trapped air out
of supply lines before lighting
pilot. New installations generally require bleed of supply
lines. Wait a minimum of five
minutes after bleeding supply
lines before attempting to light
heater.
Adjust pilot if necessary as
noted under Pilot Burner
Adjustment.
8. Turn control knob counterclockwise to the ON position. The burner will light.
DO NOT operate heater in
any position other than full
ON.
IMPORTANT: DO NOT attempt
to adjust the main burner
input using the main gas supply valve. This may cause the
pilot and thermocouple to shut
down the burner.
Combustion
Chamber
Pilot burner adjustment
1. Remove pilot adjustment
cap. The pilot adjustment
cap is a slotted screw
located in front of the
PILOT designation stamped
on top of valve body just
below control knob.
2. Adjust pilot key to provide properly sized flame.
Rotate the key clockwise to
decrease flame or counterclockwise to increase flame.
3. Replace pilot adjustment cap.
250,000 Btu/Hr Models
only (6BY72)
To Start Heater
1. Follow all installation, ventilation, and safety information.
Thermocouple
Mounting
Brace
shutting off heater
• For short periods of time, turn
the main burner off by turning control knob clockwise to
the PILOT position.
• For extended periods of non
use, turn appliance completely off by turning control
knob clockwise to the PILOT
position, press knob slightly,
then turn knob fully clockwise
to the OFF position.
Main Burner
Valve Handle
2. Locate heater on stable
and level surface. Make
sure strong drafts do not
blow on heater.
Fully close main burner valve before lighting pilot. If not, severe
burns can occur. Do
this by turning valve
handle towards the
OFF position until it
stops.
3. Open natural gas supply
valve slowly.
4. Push in and hold automatic
control valve button (see
Figure 7). Push ignitor button (see Figure 7). You may
need to push the ignitor
button 3-8 times until the
pilot lights. Note: Hose
may be filled with air. If
so, keep automatic control
valve button pressed and
wait 20 seconds for gas
to clear before pressing
ignitor button again. When
pilot lights, keep automatic control valve button
pushed in. Release button
after 30 seconds.
Ignitor
Button
Burner
ON
OFF
Match
Lighting
Hole
Cover
Pilot
Assembly
Filter Automatic Control Valve Button
Control Figure 7 - Main Burner Valve Handle, Automatic Control Valve
Gas Manifold Knob
Button, and Ignitor Button Locations, With Regulator Installed
Figure 6 - Appliance Parts
Identification
Dayton Operating Instructions and Parts Manual
Models 6BY70 and 6BY72
Operating Instructions Storage
Cleaning
(Continued)
5. If pilot light goes out,
repeat step 4.
6. When pilot remains lit,
fully open main burner
valve. Do this by turning
main burner valve handle
towards the ON position until it stops. Note:
Arrows on main burner
valve handle show directions for ON and OFF.
Once heater is lit, check all
internal gas connections for
leaks (burner, valves, etc.).
Never use an open flame
to check for a leak. Apply
mixture of liquid soap and
water to gas joints. Bubbles
forming show a leak that
must be corrected. Correct
all leaks at once
Disconnect heater from
natural gas supply.
1. Place plastic cover cap over
brass fitting on inlet connector.
2. Store in dry, clean, and safe
place.
3. When taking heater out
of storage, always check
inside of heater. Insects and
small animals may place
foreign objects in heater.
Keep inside of heater free
from combustible and foreign objects.
To Stop Heater
1. Tightly close natural gas
supply valve.
2. Using a gloved hand, shut
off main burner valve. Do
this by turning main burner
valve handle towards the
OFF position until it stops.
Note: Arrows on main
burner valve handle show
direction for ON and OFF.
To Restart Heater
1. Wait five minutes after
stopping heater.
2. Restart heater by following steps under To Start
Heater, page 8.
Never attempt to service heater while it is
connected to natural
gas supply, operating
or hot. Severe burns
can occur.
1. Keep heater clean. Clean
heater annually or as
needed to remove dust and
debris. If heater is dirty or
dusty, clean heater with a
damp cloth.
2. Inspect heater before each
use. Check connections
for leaks. Apply mixture of
liquid soap and water to
connections. Bubbles forming show a leak. Correct all
leaks at once.
3. Have heater inspected
yearly by a qualified service
agency.
6BY70 and 6BY72
Dayton Operating Instructions and Parts Manual
For RepairNatural
Parts, call Gas
1-800-323-0620
Dayton
Radiant
24 hours a day - 365 days a year
Address parts correspondence to:
Please provide following information:
Construction
Heaters
Grainger Parts
- Model number
®
- Serial number (if any)
- Part description and number as shown in parts list
P.O. Box 3074
1657 Shermer Road
Northbrook, IL 60065-3074 U.S.A.
13
21
19
20
23
10
5
8
22
4
14
12 11
3
9
8
18
2
17
6
15
16
1
Figure 8 - Repair Parts Illustration, Model 6BY70
10
Dayton Operating Instructions and Parts Manual
Model
Models 6BY70
6BY70 and 6BY72
Repair Parts List
Ref.
No.
Description
Part Number
Qty.
1
104119-01
Manual Control Valve
2
114049-01
Filter/Diffuser
3
114148-01
Pilot Orifice
4
114121-01
Thermocouple
5
114128-01
Pilot Burner
6
103406-03
Regulator
7
114244-01
Pilot Supply Tube
8
114153-01
Ignitor
9
102445-01
Piezo
10
114243-01
Spacer
11
114154-01
Axle
12
114156-01
Axle Brackets
13
114157-01
Handle
14
114208-01
Wheel
15
114209-01
Valve Supply Tube Clamp
16
114212-01
Valve Supply Tube
17
114213-01
Burner Manifold
18
114216-01
Burner
19
**
Frame Assembly
20
**
Combustion Chamber
21
**
Top Plate
22
114241-01
Burner Mounting Plate
23
114242-01
Pilot Mounting Bracket
/\
102334-01
Ignitor Nut
/\
114245-04
General Info Decal
/\
114246-02
Caution Decal
/\
117193-02
Tradename Decal
/\
115297-02
Hang Tag
(**) Not a field replaceable part.
(/\) Not Shown.
11
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
6BY70 and 6BY72
Dayton Operating Instructions and Parts Manual
For RepairNatural
Parts, call Gas
1-800-323-0620
Dayton
Radiant
24 hours a day - 365 days a year
Address parts correspondence to:
Please provide following information:
Construction
Heaters
Grainger Parts
- Model number
®
P.O. Box 3074
1657 Shermer Road
Northbrook, IL 60065-3074 U.S.A.
- Serial number (if any)
- Part description and number as shown in parts list
1
3
2
10
12
13
14
15
29
11
16
17
18
28
4
19
5
27
ON
OFF
6
21
22
20
23
24
26
25
9
31
7
8
Figure 9 - Repair Parts Illustration, Model 6BY72
12
30
Dayton Operating Instructions and Parts Manual
Models 6BY72
6BY70 and 6BY72
Model
Repair Parts List
Ref.
No. Description
Part Number
Qty.
1
104145-02 Top Disk
2
**
Emitter
3
103898-02 Shell
4
104116-01 Insulation Ring
5
104137-01 Outer Base Assembly
6
103935-01 Rear Burner Shield
7
103902-01 Leg
8
103903-01 Spacer
9
103900-02 Burner Shield
10
099138-05 Nozzle
11
118331-01 Burner Tube Assembly
12
104118-01 Ignitor Electrode
13
097163-07 Pilot Burner Assembly
14
099237-01 Thermocouple Clip
15
097161-01 Pilot Burner Orifice
16
M5788
Sleeve
17
M5787
Hex Nut
18
103028-02 Pilot Tube
19
097152-01 Manual Control Valve
20
103901-01 Burner Support
21
099461-01 Tee Compression Gauge
22
099460-01 Brass Hex Cap
23
097155-01 Automatic Control Valve
24
097157-03 Female Connector
25
104142-01 Fuel Tube
26
104141-01 Regulator
27
102445-01 Piezo Ignitor
102334-01 Ignitor Nut
28
099236-01 Thermocouple Kit
29
104143-02 Pilot Shield
30
103401-01 1/2 NPT to 1/2 45° Male Connector
31
103899-01 Base Shield
/\
104120-01 Hose Fitting Regulator Assembly
/\
117218-01 Tradename Decal
/\
104128-03 Operation Decal
(**) Not a field replaceable part.
(/\) Not Shown.
1
1
1
1
1
1
3
6
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
13
Dayton Operating Instructions and Parts Manual
6BY70 and 6BY72
Dayton Natural Gas Radiant
Construction Heaters
®
Troubleshooting Chart
Never attempt to service heater while it is connected to
natural gas supply, operating or hot. Severe burns can occur.
Symptom
Possible Cause
Corrective Action
Burner or pilot fails to light
1.Gas supply valve closed
2.Air in gas line
1.Open gas supply valve slowly
2.Allow several minutes to
purge air with automatic control valve button depressed
3.Replace orifice
4.Assure ignitor electrode gap is
5 mm (0.195 in). Check wire
lead for damage Replace ignitor and/or ignitor electrode
as necessary. Do not bend
electrode, this may cause
breakage
3.Blockage in orifice
4.Ignition system not sparking
Pilot lights but goes out when
automatic control valve button
is released
1.Not enough warm-up time
2.Low gas pressure
3.Thermocouple loose or
needs to be replaced
4.Automatic control valve
needs to be replaced
Burn rate is low
1.Main burner valve not fully
open
2.Plugged gas orifices
3.Low gas pressure
4.Low fuel supply
14
1.Relight, hold automatic
control valve button in 45
seconds
2.Check for proper gas supply
3.Tighten connection or
replace thermocouple
4.Replace automatic control
valve
1.125 models: Fully open main
burner valve by pushing in
control knob and turning
counterclockwise towards
HIGH position until it stops
250 models: Fully open main
burner valve by turning the
valve handle towards ON
position until it stops
2.Replace gas orifice
3.Check gas supply; check
regulator output
4.Consult gas supplier to
determine adequate supply
Dayton Operating Instructions and Parts Manual
Models 6BY70 and 6BY72
Troubleshooting Chart (Continued)
Symptom
Possible Cause
Corrective Action
Soot forming inside heater,
flame 100% yellow
1.Main burner valve not open
enough
1.125 models: Fully open main
burner valve by pushing in
control knob and turning
counterclockwise towards
HIGH position until it stops
250 models: Adjust main
burner valve slowly toward
ON position until flame has
more blue color
2.Consult natural gas supplier
2.Low fuel supply
Burn rate too high. Flames
coming out of emitter (250
models only)
1.Pressure too high
2.Unit connected to propane
gas
15
1.Check inlet pressure. If
over 4 psi adjust or install
regulator
2.Verify gas source. If connected to propane gas, disconnect. Connect to natural gas
Dayton Operating Instructions and Parts Manual
6BY70 and 6BY72
Dayton Natural Gas Radiant
Construction Heaters
®
LIMITED WARRANTY
Dayton One-Year Limited Warranty. Dayton Natural Gas Radiant Construction Heater, Models covered
in this manual, are warranted by Dayton Electric Mfg. Co. (Dayton) to the original user against defects in
workmanship or materials under normal use for one year after date of purchase. Any part which is determined to be defective in material or workmanship and returned to an authorized service location, as Dayton
designates, shipping costs prepaid, will be, as the exclusive remedy, repaired or replaced at Dayton’s option.
For limited warranty claim procedures, see PROMPT DISPOSITION below. This limited warranty gives purchasers specific legal rights which vary from jurisdiction to jurisdiction.
Limitation of Liability. To the extent allowable under applicable law, Dayton’s liability for consequential
and incidental damages is expressly disclaimed. Dayton’s liability in all events is limited to, and shall not
exceed, the purchase price paid.
Warranty Disclaimer. Dayton has made a diligent effort to provide product information and illustrate
the product in this literature accurately; however, such information and illustrations are for the sole purpose
of identification, and do not express or imply a warranty that the products are merchantable, or fit for a
particular purpose, or that the products will necessarily conform to the illustrations or descriptions.
Except as provided below, no warranty or affirmation of fact, expressed or implied, other than as stated in
“LIMITED WARRANTY” above is made or authorized by Dayton.
Product Suitability. Many jurisdictions have codes and regulations governing sales, construction, installation, and/or use of products for certain purposes, which may vary from those in neighboring areas. While
Dayton attempts to assure that its products comply with such codes, it cannot guarantee compliance, and
cannot be responsible for how the product is installed or used. Before purchase and use of a product, review
the product applications, and all applicable national and local codes and regulations, and be sure that the
product, installation, and use will comply with them.
Certain aspects of disclaimers are not applicable to consumer products; e.g., (a) some jurisdictions do not
allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you; (b) also, some jurisdictions do not allow limitations on how long an implied
warranty lasts, consequently the above limitation may not apply to you; and (c) by law, during the period of
this Limited Warranty, any implied warranties of implied merchantability or fitness for a particular purpose
applicable to consumer products purchased by consumers, may not be excluded or otherwise disclaimed.
Prompt Disposition. Dayton will make a good faith effort for prompt correction or other adjustment with
respect to any product which proves to be defective within limited warranty. For any product believed to
be defective within limited warranty, first write or call dealer from whom product was purchased. Dealer
will give additional directions. If unable to resolve satisfactorily, write to Dayton at address below, giving
dealer’s name, address, date and number of dealer’s invoice, and describing the nature of the defect. Title
and risk of loss pass to buyer on delivery to common carrier. If product was damaged in transit to you, file
claim with carrier.
Manufactured for Dayton Electric Mfg. Co., 5959 W. Howard St., Niles, Illinois 60714 U.S.A.
117163 01
NOT A UPC
Manufactured for Dayton Electric Mfg. Co.
Niles, Illinois 60714 U.S.A.
16
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