Owner's Manual

ManualsBrandsDesa Tech ManualsHeatersDesa Tech 6BY70

Printed in China or Mexico

09663

1105/382/VCPVP

Operating Instructions and Parts Manual

Form 5S5383

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 build-

ings 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

GENERAL HAZARD

WARNING

Failure to comply

with the precau-

tions and instruc-

tions provided with

this heater, can

result in death, seri-

ous bodily injury

and property loss

or damage from

hazards of fire,

explosion, burn,

asphyxiation, car-

bon monoxide

poisoning and/or

electrical shock.

Only persons who

can understand and

follow the instruc-

tions should use or

service this heater.

If you need assis-

tance or heater infor-

mation such as an

instructions manual,

labels, etc. contact

the manufacturer.

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

6BY70 and 6BY72

Figure 2 - Model 6BY72

Unpacking

1. Remove all packing items

applied to heater for ship-

ment. Keep plastic cover

caps (attached to valve inlet

and regulator assembly) for

storage.

Remove all items from carton.

3. Check all items for ship-

ping damage. If heater is

damaged, promptly inform

dealer where you bought

heater.

DES003

05/05

117163-01

Rev. D

11/05

Model 6BY70 Only

Summary of content (16 pages)

PAGE 1
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.
PAGE 2
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.
PAGE 3
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.
PAGE 4
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.
PAGE 5
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.
PAGE 6
BY70 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.
PAGE 7
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.
PAGE 8
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.
PAGE 9
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.).
PAGE 10
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.
PAGE 11
Dayton Operating Instructions and Parts Manual Model Models 6BY70 6BY70 and 6BY72 Repair Parts List Ref. No. Description Part Number Qty.
PAGE 12
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.
PAGE 13
Dayton Operating Instructions and Parts Manual Models 6BY72 6BY70 and 6BY72 Model Repair Parts List Ref. No. Description Part Number Qty.
PAGE 14
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.
PAGE 15
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.
PAGE 16
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.