
4
SECTION II: INSTALLATION INSTRUCTIONS
2. REMOVAL OF BOILER FROM SKID
A. Tilt boiler, "walk" boiler backward, and set rear
legsdownonoor.Tiltboilerbackward,pull
skid forward and set front legs down on edge of
skid. Install close coupling, tee, and plug in return
coupling, see Step 7 and Figure 4. Point tee toward
permanent return location.
1. REMOVE CRATE
A. Remove all fasteners at crate skid.
B. Lift outside container and remove all other inside
protective spacers and bracing. Remove container
containing Safety Relief Valve and Pipe Fittings.
3. PROVIDE COMBUSTION AND VENTILATION
AIR. Local code provisions may apply and should be
referenced.
D.Forboilerlocatedinanunconnedspaceofa
conventionally constructed building, the fresh
airinltrationthroughcracksaroundwindows
and doors normally provides adequate air for
combustion and ventilation.
E. Forboilerlocatedinaconnedspaceoran
unconnedspaceinabuildingofunusuallytight
construction, provide outdoor air with the use of 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 12 inches of top of space. Locate
remaining opening within 12 inches of bottom of
space. Minimum dimension of air opening is 3
inches. Size each opening per following:
1. Direct communication with outdoors.
Minimum free area of 1 square inch per 4,000
BTU per hour input of all equipment in space.
2. Vertical ducts. Minimum free area of 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.
3. Horizontal ducts. Minimum free area of 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
conned space. Use indoor air if two permanent
openings communicate directly with additional
space(s)ofsufcientvolumesuchthatcombined
volumeofallspacesmeetcriteriaforunconned
space. Size each opening for minimum free area
of 1 square inch per 1,000 BTU per hour input
of all equipment in spaces, but not less than 100
square inches.
F. Louvers and Grilles of Ventilation Ducts
1. All outside openings should be screened and
louvered. Screens used should not be smaller
than 1/4 inch mesh. Louvers will prevent the
entrance of rain and snow.
2. Free area requirements need to consider the
blocking effect of louvers, grilles, or screens
protecting the openings. If the free area of the
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.
3. Louversandgrillesmustbexedintheopen
position, or interlocked with the equipment to
open automatically during equipment operation.
A. Determine volume of space (boiler room). Rooms
communicating directly with the space in which
the appliances are installed, through openings not
furnished with doors, are considered a part of the
space.
Volume(ft3) = Length(ft) x Width(ft) x Height(ft)
B. Determine total input of all appliances in the space.
Add inputs of all appliances in the space and round
the result to the nearest 1000 BTU per hour.
C. Determine type of space. Divide Volume by total
input of all appliances in space. If the result is
greater than or equal to 50 ft3/1000 BTU per hour,
thenitisconsideredanunconnedspace.Ifthe
result is less than 50 ft3/1000 BTU per hour then the
spaceisconsideredaconnedspace.
Figure 2: Minimum Installation Clearances To
Combustible Materials
GNINRAW
rianoitalitnevdnanoitsubmocetauqedA
reporperussaotdedivorpebtsum
.noitsubmoc
naciremAhtiwylpmocsecnaraelcdetsiL:1ETON
liofonoitallatsnI,13APFN/ISNAdradnatSlanoitaN
.tnempiuqegninrub
smoornidellatsniebnacsreliob3KETorcim:2ETON
detsilsalairetamelbitsubmocmorfsecnaraelchtiw
rofdecuderebtonnacsecnaraelcdetsiL.evoba
.snoitallatsnitesolcroevocla
elbitsubmocotsecnaraelcdecuderroF:3ETON
nidebircsedsadedivorpebtsumnoitcetorp,lairetam
.dradnats13APFN/ISNAevobaeht