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Dayton Operating Instructions and Parts Manual
4
Dayton Propane and Natural Gas
Construction Heaters
®
3VH18A and 3VH19A
Propane Supply for Model
3VH18A
Average Temperature (ºF) Number of
at Tank Location Tanks (100-lbs)
60° 2
40° 2
32° 2
20° 2
10° 3
0° 3
You must provide propane gas and
propane tank(s).
Use this heater only with a propane vapor
withdrawal supply system. See Chapter 5
of the Standard for Storage and Handling
of Liquefied Petroleum Gas, ANSI/NFPA 58
and/or CAN/CGA B149.2. Your local library
or fire department will have this booklet.
The amount of propane gas ready for use
from propane tanks varies. Two factors
decide this amount.
1. The amount of propane gas in tank(s)
2. The temperature of tank(s)
Specifications for Model 3VH18A
Output Minimum Fuel Maximum Fuel Size Weight
Rating Btu/Hr Fuel Consumption Consumption L x W x H (Inches) (pounds)
40,000 to 100,000 Propane 0.44 Gallons/Hour 1.1 Gallons/Hour 16 x 16 x 35 30 (Heater)
Vapor Only 1.86 Pounds/Hour 4.7 Pounds/Hour 18 x 18 x 36 35 (Shipping)
Maximum Supply Minimum Supply Min. Temperature Manifold Pressure Ignitor
Pressure to Regulator Pressure to Regulator Surrounding Air (Inches of Water Column) Gap (Inches)
200 psi 20 psi (for purposes -20ºF (-29ºC) 13.3 (High) 0.15
of input adjustment) 25.6 (Low)
Specifications for Model 3VH19A
Output Minimum Fuel Maximum Fuel Size Weight
Rating Btu/Hr Fuel Consumption Consumption L x W x H (Inches) (pounds)
50,000 to 100,000 Natural Gas 48 scfh 100 scfh 16 x 16 x 35 30 (Heater)
Only 18 x 18 x 36 35 (Shipping)
Maximum Supply Minimum Supply Min. Temperature Manifold Pressure Ignitor
Pressure to Regulator Pressure to Regulator Surrounding Air (Inches of Water Column) Gap (Inches)
14 inches w.c. 6 inches w.c. (for -20ºF (-29ºC) 2.7 (High) 0.15
purposes of input 3.2 (Low)
adjustment
The chart below shows the minimum
number of 100-pound tanks needed to
run the heater. Connect tanks together
with a manifold. Do not operate this
product with any tank smaller than 100
pounds.
Less gas is vaporized at lower tempera-
tures. Two or more 100-pound tanks or
one larger tank may be needed in colder
weather. Your local propane gas dealer will
help you select the proper supply system.