8
confined space. Use indoor air if two permanent
openings communicate directly with additional
space(s) of sufficient volume such that combined
volume of all spaces meet criteria for unconfined
space. Size each opening for minimum free area
of one (1) square inch per 1,000 Btu per hour
input of all equipment in spaces, but not less than
100 square inches.
7. Combustion Air/Ventilation Duct Louvers and
Grilles. Equip outside openings with louvers to
prevent entrance of rain and snow, and screens to
prevent entrance of insects and rodents. Louvers and
grilles must be fixed in open position or interlocked
with equipment to open automatically before burner
operation. Screens must not be smaller than ¼ inch
mesh.
Consider the blocking effect of louvers, grilles and
screens when calculating the opening size to provide
the required free area. If free area of louver or grille
is not known, assume wood louvers have 20-25
percent free area and metal louvers and grilles have
60-75 percent free area.
II. UNPACk BOILER
CAUTION
Do not drop boiler. Do not bump boiler jacket
against floor.
A.
Move boiler
to approximate installed position.
B.
Remove
all
crate fasteners.
C.
Lift and remove
outside container. Save two of the
wooden slats from the container sleeve for use in Steps
E and F.
D.
Remove all
boiler hold-down fasteners.
WARNING
Installation of this boiler should be undertaken
only by trained and skilled personnel from a
qualified service agency.
E.
Tilt the boiler
to its front side or back side and slide a
wooden slat under the three raised feet.
F.
Tilt the boiler
in the opposite direction and slide
another wooden slat under the three raised feet.
G.
Slide the boiler
left or right off the skid using the two
wooden slats as runners.
H.
Move boiler
to its permanent location.
6. For boiler located within
unconfined space in
building of unusually tight construction
or within
confined space
, provide outdoor air through two
permanent openings which communicate directly or
by duct with the outdoors or spaces (crawl or attic)
freely communicating with the outdoors. Locate one
opening within twelve (12) inches of top of space.
Locate remaining opening within twelve (12) inches
of bottom of space. Minimum dimension of air
opening is three (3) inches. Size each opening per
following:
a. Direct communication with outdoors. Minimum
free area of one (1) square inch per 4,000 Btu per
hour input of all equipment in space.
b. Vertical ducts. Minimum free area of one (1)
square inch per 4,000 Btu per hour input of all
equipment in space. Duct cross-sectional area
shall be same as opening free area.
c. Horizontal ducts. Minimum free area of one (1)
square inch per 2,000 Btu per hour input of all
equipment in space. Duct cross-sectional area
shall be same as opening free area.
Alternate method for boiler located within
CAUTION
Avoid operating this boiler in an environment where saw dust, loose insulation fibers, dry wall dust, etc.
are present. If boiler is operated under these conditions, the burner interior and ports must be cleaned and
inspected daily to insure proper operation.
I. PRE-INSTALLATION (continued)
Summary of Contents for PVG3
Page 14: ...14 Figure 4 Horizontal Vent Installation III Venting continued...
Page 16: ...16 Figure 7 Attic Offset Figure 6 Vertical Vent Installation III Venting continued...
Page 29: ...29 Figure 17 Wiring Connection Diagram VI Electrical continued...
Page 31: ...31 Figure 19 Circulator Zoned System Wiring Diagram VI Electrical continued...
Page 32: ...32 Figure 20 Zone Valve Zoned System Wiring Schematic VI Electrical continued...
Page 34: ...34 Figure 21 Modular Boiler Piping VII Modular Installation continued...
Page 36: ...36 Figure 22 Operating Instructions VIII System Start up continued...
Page 51: ...51 Figure 29 Flue and Burner Cleanout 1 Burner XI Service continued...
Page 54: ...54 XII Repair Parts continued...
Page 56: ...56 XII Repair Parts continued...
Page 60: ...60 XII Repair Parts continued...
Page 67: ...67 SERVICE RECORD DATE SERVICE PERFORMED...
Page 68: ...68 U S Boiler Company Inc P O Box 3020 Lancaster PA 17604 1 888 432 8887 www usboiler net...
