Landa VNG4-2000, Operator'S Manual

Page: 10 / 56

96-610 • LANDA VNG/VLP • REV. 9/05
OPERA
T
OR’S MANU
AL
PRESSURE W
ASHER
10
Propane Gas:
The following pipe sizes should be used between the
regulator and the gas valve on the burner.
Distance From Regulator Pipe Size
0 - 50' 1" 1 PS
50' - 100' 1-1/2" 1 PS
100' - 200' 1-3/4" 1 PS
Natural Gas:
The following pipe sizes should be used between the
meter and the cleaner.
Distance From Regulator Pipe Size
0 - 50' 1-1/2" 1 PS
50' - 100' 2" 1 PS
100' - 200' 2-1/2" 1 PS
Venting:
Because this machine is installed indoors, regulations or
ventilation concerns may call for a chimney or furnace
pipe.
When venting the machine, if the machine is to be in
an enclosed area with a stack on it, be sure the flue
pipe is the same size as the stack on the machine.
Poor draft will cause the machine to soot and not oper-
ate efficiently. When placing the machine for installa-
tion, keep in mind that the machine should be posi-
Location of union and drip leg for connecting conversion
burner to house piping.
Control
Manifold
Figure 2: Union Location
3 in. (76.2 mm)
MINIMUM
Floor Level
Tee
Flow
Manual
Shut-off
Valve
1/8 in. N.P.T.
Plugged Pressure
Gauge Port
Union
Pipe Cap
tioned in such a manner that the stack will be as straight
as possible and protrude through the roof of the build-
ing at a proper location and at sufficient height to elimi-
nate down draft. The flue pipe of a gas fired machine
shall be installed with a down draft diverter.
Input - BTU Per Hour Draft Hood & Flue Pipe
Size
410,000 - 600,000 10 inch
600,000 - 750,000 12 inch
Draft Diverter:
The draft diverter (figure 3) should be installed at least
one (1) foot above the heating coil. The diverter enhances
the draft through the burner by severing the chimney ef-
fect created in sections of furnace pipe positioned below.
It also helps prevent freezing of the coil due to wind chill
factors.
Figure 3
Optional
When the pressure washer is installed in a tightly closed
room without ventilation openings to the outdoors or
other rooms, provisions shall be made for supplying
air for combustion through special openings, one near
the floor line and the other near the ceiling, each to be
sized on the basis of one square inch or more of free
area for each 1,000 BTU input per hour. See Figure 4.
When a room is of unusually tight construction and has
a ventilating fan, which may be used for exhausting air
to outdoors - or has a vented fireplace - it is recom-
mended that combustion air be supplied to the enclosed
room through intakes extending to the outside of the
building and terminating in downturned fittings, suitably
arranged to prevent obstruction from snow or rain, and
including a protecting screen not smaller than 1/4 inch
mesh.
Figure 3
INSTALLATION
Ventilating Air Opening 1 sq. in. for each 1000 BTU per hour input.
Illustration showing air openings necessary to supply air for
combustion when heating appliance is installed in an enclosed room.