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Dayton Operating Instructions and Parts Manual
4
Dayton Propane
Construction Heater
®
3VH20
Propane Supply
Propane gas and propane tank(s) must be
provided by the customer.
Use this heater only with a propane vapor
withdrawal supply system. See Chapter 5
of the Standard for Storage and Handling
of Liquified Petroleum Gas, ANSI/NFPA 58.
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)
This heater is designed to operate with a
minimum 20-pound propane tank. You
may need two or more tanks or one larger
tank in colder weather. Use a 100-pound
tank for longer operation or in very cold
weather. Less gas is vaporized at lower
temperatures. Your local propane gas
dealer will help you select the proper
supply system.
Average Temperature (ºF) Number of
at Tank Location Tanks (100-lbs)
40° 1
32° 1
20° 1
10° 1
0° 1
-10° 2
-20° 2
Ventilation
Provide at least an
120-square-inch
opening of fresh, outside air 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.
Installation
Review and
understand the
warnings in the General Safety Infor-
mation section. They are needed to
safely operate this heater. Follow all
local codes when using this 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.
Propane
Tank
Regulator
Figure 3 - Connecting Heater to Propane
Tank
3. Connect hose to the inlet connector
(See Figure 4). Tighten firmly using
wrench.
Inlet
Connector
Hose
4. Open propane supply valve on propane
tank(s) slowly.
NOTE: If not opened slowly, excess-flow
check valve on propane tank may stop gas
flow. If this happens, you may hear a click
inside the regulator assembly. This is the
check valve closing. To reset the excess
flow check valve, close propane supply
valve and open it again slowly.
5. Check all connections for leaks.
Figure 4 - Hose and Inlet Connector
1. Make sure heater regulator knob is in
the OFF position.
2. Wrench tighten the fuel connector nut
into the propane tank valve (See Figure
3). Turn fuel connector nut counter-
clockwise to tighten. Threads are left-
handed.
6. Close propane supply valve.
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 that must be
corrected. Correct all leaks at once.