Open as PDF
Operating Instructions & Parts Manual
Dayton Natural Gas
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 Model 3VG78 natural gas construction heater is a 150,000 Btu/Hr heater with
built-in thermostat. This heater uses only natural gas for combustion. It is primarily
intended for temporary heating of well-ventilated buildings under construction, alter-
ation, or repair. This heater should only be used indoors but never in occupied dwellings.
Products of combustion are vented into the area being heated.
Figure 1 – Model 3VG78
tion, and explosion haz-
ard. Keep solid combus-
tibles such as building
materials, paper or card-
board, 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 com-
bustibles, or products
such as gasoline, sol-
vents, paint thinner, dust
particles, or unknown
The heater is designed for use as a construc-
tion heater. Other standards govern the use
of fuel gases and heat producing products
for specific uses. Your local authorities can
advise you about these. The primary purpose
of construction heaters is to provide
temporary heating of buildings under
construction, alteration or repair, and to
provide temporary emergency heat.
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.
Failure to comply with
the precautions and in-
structions provided with
this heater can result in
death, serious bodily
injury, and property loss
or damage from hazards
of fire, explosion, burn,
and/or electrical shock.
Only persons who can
understand and follow
instructions should use or
service this heater.
If you need assistance or
heater information such
as an instruction manual,
labels, etc. contact the
recreational vehicle use.
1. Remove all packing items applied to
heater for shipment. Keep plastic cover
caps (attached to inlet connector) for
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 U.S.A.
Version B - For Reduction G016.J