Olsen OSW User manual

VENTING ADDENDUMVENTING ADDENDUM VENTING ADDENDUMVENTING ADDENDUM
VENTING ADDENDUM
OSWOSW
OSWOSW
OSW
OIL FIRED DIRECT EXHAUST
CAST IRON BOILER
Olsen Technology, Inc. •P.O. Box 900 •Wallaceburg, Ont. N8A5E5

Installation of Exhaust & Vent Piping
(Perform prior to any plumbing or electrical work)
1. Locate ventterminationkiton outsideof buildingand installin accordancewith figure3
on page 3. (make sure air inlet on termination piece is free of restriction).
2. Align the boiler with the termination kit.
3. Install vent adapters, (Note: The termination kit comes with 2 adapters, one for each
end of the vent pipe. One of the adapters has a 5/16" bolt installed.)
A. Place the adapter with the bolt on the boiler outlet.
B. Place the other adapter on the vent termination kit.
4. Measure the distance between the adapters for the vent pipe the way it would run and
add 4" to that dimension. The extra 4" is for the pipe to screw into the adapters.
5. Cut the vent pipe flush using a hacksaw having 24 teeth per inch. Dry fit the vent
adapters to the pipe and check for fit before applying RTV silicone.
6. Place a bead of RTV high temperature silicon on each vent adapter (see fig. 4) and
screwthe adapterscounter clockwiseon tothe ventpipe untilseated.Tightenthe 5/16"
clamps on the adapters to secure them to the vent pipes.
7. Install the adapter to the termination kit and boiler outlet and tighten the 5/16" clamps.
Placea beadofsilicone aroundthe jointswherethe adaptermeets theboileroutlet (see
figure 5).
8. Install plumbing, electrical, oil lines and appropriate plumbing (If this step is performed
first vent installation will be difficult).
9. Install theinlet airvent andvacuumrelief valvefrom terminationtoburner airinlet using
4", 26 or 30 gauge vent pipe (Do not use plastic or metal flex dryer vent as it may
collapse due to the thinness of the wall.). Secure pipe using sheet metal screws. See
fig. 1 for location of relief valve. Install vent pipe with crimps running with the air flow.
FIGURE1
PAGE 1

PAGE2
HORIZONTAL VENT PIPING TYPICAL INSTALLATION
Notes:
1 : Itis recommendedto installtermination kitand ventpipe toboiler first
beforeinstallingsupply& returnpiping. Ifnotinstalled first,installation
ofventpipe willbedifficult.
* 2 : Insertvent pipein boilervent outlet,apply siliconecompletely around
edgeof outletandtightenclamp.See figure5 onpage4.
** 3: Maximumventlength: 10 feet.
Minimumventlength: 24 inches (2 feet).
***4: Vacuumreliefvalvecanbeinstalledhorizontallyasshownorvertically.
FIGURE2

PAGE3
FIGURE3

PAGE4
FIGURE4
FIGURE5
CACA
CACA
CAUTION:UTION:
UTION:UTION:
UTION: KEEPAREAAROUND THEVENTTERMINALFREE OF
SNOW, ICE, AND DEBRIS.

PAGE5
VENTILATION & COMBUSTION AIR
WARNING:WARNING:
WARNING:WARNING:
WARNING: AIR OPENINGS TO COMBUSTION AREA MUST NOT BE
OBSTRUCTED. BY FOLLOWING THE INSTRUCTIONS BELOW, ADEQUATE
COMBUSTIONAIRCANBEMAINTAINED
COMBUSTIONAIRREQUIREMENTS
(MinimumOpeningRequirements)
*UNCONFINEDAREA **CONFINEDAREA
Outside Inside OutsideCombustionAir
Combustion Combustion VERT.DUCTS HORZ.DUCTS
BTU/HR Air 1 IN.2Air 1 IN.21 IN.21 IN.2
INPUT /5000BTU/HR /1000BTU/HR /4000BTU/HR /2000BTU/HR
(Paragraph 4) (See Fig 1) (See Fig 2 & 3 (See Fig 4
(MIN. 100 IN2) Pages 5 & 6) Page 6)
91,000 19 100 23 46
140,000 28 140 35 70
**
**
* Unconfined area: A space whose volume is not less than 50 cubic feet per
1000 BTU per hour of all appliances installed in that space (cubic feet of space = height x
width x length).
****
****
** Confined area: A space whose volume is less than 50 cubic feet per 1000 BTU
per hour of all appliances installed in that space (cubic feet of space = height x width x
length).
1. Ventilation of the boiler room must be adequate to provide sufficient air to properly
supportcombustion.
2.Whenaboilerislocatedinanunconfinedspaceinabuildingorconventionalconstruction
frame, masonry or metal building, infiltration normally is adequate to provide air for
combustionandventilation.However,iftheequipmentislocatedinabuildingofunusuallytight
construction the boiler area should be considered as a confined space. In this case air for
combustion and ventilation shall be provided according to part 5 on page 6. If there is any
doubt, install air supply provisions in accordance with section 5.3, Air for Combustion and
Ventilation, of the latest revision of the NFPA 54 code.
3. When a boiler is installed in an unconfined space, in a building of unusually tight
construction, air for combustion and ventilation must be obtained from outdoors or from
spacesfreelycommunicatingwiththeoutdoors.Apermanentopeningoropeningshavinga
total free area of not less than 1 square inch per 5,000 BTU per hour of total input rating of
allappliancesshallbeprovided.Ductsmaybeusedtoconveymakeupairfromtheoutdoors

FIGURE6 FIGURE7
PAGE6
andshallhavethe samecross-sectional areaoftheopeningsto whichthey areconnected.
4.Whenairforcombustionandventilationisfrominsidebuildings,theconfinedspaceshall
be provided with two permanent openings, one starting 12 inches from the top and one 12
inchesfromthebottomoftheenclosedspace.Eachopeningshallhaveaminimumfreearea
of1squareinchperonethousand(1000)BTUperhourofthetotalinputratingofallappliances
in the enclosed space, but must not be less than one hundred (100) square inches. These
openingsmustfreelycommunicatedirectlywithotherspacesofsufficientvolumesothatthe
combinedvolumeofallspacesmeetsthecriteriaforanunconfinedspace.Seefigure6below.
5.Whentheboilerisinstalledinaconfinedspaceandallairisprovidedfromtheoutdoors
the confined space shall be provided with one or two permanent openings according to
methodsAorBbelow.Whenductsareused,theyshallbeofthesamecrosssectionalarea
asthefreeareaoftheareaoftheopeningstowhichtheyconnect.Theminimumdimension
of rectangular air ducts shall be not less than 3 x 3 inches or 9 square inches.
A. Wheninstallingtwoopenings,onemustcommencewithin12inchesfromthetopand
theotherwithin12inchesfromthebottomoftheenclosure.Theopeningsshallcommunicate
directly,orbyducts,withtheoutdoorsorspaces(crawlorattic)thatfreelycommunicatewith
the outdoors. One of the following methods must be used to provide adequate air for
ventilationandcombustion.
1. When directly communicating with the outdoors, each opening shall have a
minimum free area of 1 square inch per 4,000 BTU per hour of total input rating of all
equipment in the enclosure. See figure 7 above.
2. When communicating with the outdoors by means of vertical ducts, each
openingshallhaveaminimumfreearea1squareinchper4,000BTUperhouroftotalinput
rating of all appliances in the enclosed space. See figure 8 on page 7.
3.Ifhorizontalductsareused,eachopeningandductshallhaveaminimum free
area1squareinchper2,000BTUperhouroftotalinputratingofallappliancesintheenclosed
space. See figure 9 below.

FIGURE8 FIGURE9
27516101 PAGE7 REV: 1.1, February 2004
B. Onepermanentopening,commencingwithin12inchesofthetopoftheenclosure,
shall be permitted where the equipment has clearances of at least 1 inch from the sides, 1
inch from the back, and 6 inches from the front of the boiler. The opening shall directly
communicatewiththeoutdoorsorshallcommunicatethroughaverticalorhorizontalductto
the outdoors or spaces (crawl or attic) that freely communicate with the outdoors. The
openingsmusthaveaminimumfreeareaof1squareinchper3000Btuperhourofthetotal
inputratingofallequipmentlocatedintheenclosure. Thefreeareamustbenolessthanthe
sum of the areas of all vent connectors in the confined space.
6. In calculating free area using louvers, grilles or screens for the above, consideration
shallbegiventotheirblockingeffect.Screensusedshallnotbesmallerthan1/4inchmesh.
If the free area through a design of louver or grill is known, it should be used in calculating
the size opening required to provide the free area specified. If the design and free area is
not known, it may be assumed that wood louvers will have 20-25% free area and metal
louversandgrilleswillhave60-75%freearea.Louversandgrillesshouldbefixedintheopen
position or interlocked with the boiler so they are opened automatically during the boiler
operation.