WARNING: If not installed, operated and maintained in
accordance with the manufacturer’s instructions, this
product could expose you to substances in fuel or from
fuel combustion which can cause death or serious illness.
POWER-VENT
HIGH-EFFICIENCY
FIREPLACE WITH
BAY WINDOW MANTIS MODELS
BF28(B,C,G)M(N,P)-4
BI28(B,C,G)M(N,P)-4
BP28(B,C,G)M(N,P)-4
Attention: Check local codes for venting requirements.
Installer: Leave this manual with the appliance.
Consumer: Retain this manual for future reference.
WARNING: If the information in these instructions are
not followed exactly,a re or explosion may result
causing property damage, personal injury or loss of
life.
Young children should be carefully supervised when they
are in the same room as the appliance. Toddlers, young
children and others may be susceptible to accidental
contact burns. A physical barrier is recommended if
there are at risk individuals in the house. To restrict ac-
gate to keep toddlers, young children and other at risk
individuals out of the room and away from hot surfaces.
This appliance may be installed in an aftermarket,
permanently located, manufactured home (USA only)
or mobile home, where not prohibited by state or local
codes.
This appliance is only for use with the type of gas indicated
on the rating plate. This appliance is not convertible for
not familiar with the installation of the Mantis and
have questions, should contact Empire Comfort Systems, Inc. prior to installing the appliance to avoid
creating a hazardous operating condition.
when they are in the same room as the appliance.
Toddlers, young children and others may be susceptible to accidental contact burns. A physical
barrier is recommended if there are at risk individualsin the house. Torestrict access to a replace or stove, install an adjustable safety gate to
keep away toddlers, young children and other at
risk individuals out of the room and away from hot
surfaces.
or residential installation convertible for use with
natural gas and liqueed petroleum gases when
provision is made for the simple conversion from
one gas to the other.
WARNING
Installation and repair should be done by a
QUALIFIED SERVICE PERSON. The appliance should
be inspected before use and at least annually by a
be required due to excessive lint from carpeting,
bedding materials, etc. It is imperative that
control compartments, burners and circulating air
passageways of the appliance be kept clean.
1. The installer must leave instruction manual with owner
after installation.
2. The installer must have the owner ll out and mail
registration card supplied with the heater.
3. The installer should show the owner how to start and
operate heater and thermostat.
4. The installer must locate unit near a grounded wall
receptacle for 115VAC power and must provide gas
supply and vent the unit properly for safe operation.
27297-1-1010Page 3
SAFETY INFORMATION FOR USERS OF LP-GAS
LP-Gas (Propane) is a ammable gas which can cause res
and explosions. In its natural state, propane is odorless and
colorless. You may not know all the following safety precautions
which can protect both you and your family from an accident.
Read them carefully now, then review them point by point with the
members of your household. Someday, there may not be a
minute to lose, everyone’s safety will depend on knowing exactly what to do. If, after reading the following information, you
feel you still need more information, please contact your gas
supplier.
LP-GAS WARNING ODOR
If a gas leak happens, you should be able to smell the gas because of the odorant put in the LP-Gas.
That’s your signal to go into immediate action!
• Do not operate electric switches, light matches, use your
phone. Do not do anything that could ignite the gas.
• Get everyone out of the building, vehicle, trailer, or area.
Do that IMMEDIATELY.
• Close all gas tank or cylinder supply valves.
• LP-Gas is heavier than air and may settle in low areas
such as basements. When you have reason to suspect
a gas leak, keep out of basements and other low areas.
Stay out until reghters declare them to be safe.
• Use your neighbor’s phone and call a trained LP-Gas
service person and the re department. Even though
you may not continue to smell gas, do not turn on the
gas again. Do not re-enter the building, vehicle, trailer,
or area.
• Finally, let the service man and reghters check for escaped gas. Have them air out the area before you return.
Properly trained LP-Gas service people should repair the
leak, then check and relight the gas appliance for you.
NO ODOR DETECTED - ODOR FADE
Some people cannot smell well. Some people cannot smell
the odor of the chemical put into the gas. You must nd out if
you can smell the odorant in propane. Smoking can decrease
your ability to smell. Being around an odor for a time can affect
your sensitivity or ability to detect that odor. Sometimes other
odors in the area mask the gas odor. People may not smell
the gas odor or their minds are on something else. Thinking
about smelling a gas odor can make it easier to smell.
The odorant in LP-gas is colorless, and it can fade under
some circumstances. For example, if there is an underground
leak, the movement of the gas through soil can lter the odorant. Odorants in LP-Gas also are subject to oxidation. This
fading can occur if there is rust inside the storage tank or in
iron gas pipes.
The odorant in escaped gas can adsorb or absorb onto or
into walls, masonry and other materials and fabrics in a room.
That will take some of the odorant out of the gas, reducing its
odor intensity.
LP-Gas may stratify in a closed area, and the odor intensity
could vary at different levels. Since it is heavier than air, there
may be more odor at lower levels. Always be sensitive to the
slightest gas odor. If you detect any odor, treat it as a serious leak.
Immediately go into action as instructed earlier.
• Learn to recognize the odor of LP-gas. Your local LP-Gas
Dealer can give you a “Scratch and Sniff” pamphlet. Use
it to nd out what the propane odor smells like. If you suspect that your LP-Gas has a weak or abnormal odor, call
your LP-Gas Dealer.
• If you are not qualied, do not light pilot lights, perform
service, or make adjustments to appliances on the LP-Gas
system. If you are qualied, consciously think about the
odor of LP-Gas prior to and while lighting pilot lights or
performing service or making adjustments.
• Sometimes a basement or a closed-up house has a musty
smell that can cover up the LP-Gas odor. Do not try to
light pilot lights, perform service, or make adjustments in
an area where the conditions are such that you may not
detect the odor if there has been a leak of LP-Gas.
• Odor fade, due to oxidation by rust or adsorption on walls
of new cylinders and tanks, is possible. Therefore, people
should be particularly alert and careful when new tanks or
cylinders are placed in service. Odor fade can occur in new
tanks, or reinstalled old tanks, if they are lled and allowed
to set too long before relling. Cylinders and tanks which
have been out of service for a time may develop internal
SOME POINTS TO REMEMBER
rust which will cause odor fade. If such conditions are
suspected to exist, a periodic sniff test of the gas is
advisable. If you have any question about the gas odor,
call your LP-gas dealer. A periodic sniff test of the LP-gas
is a good safety measure under any condition.
• If, at any time, you do not smell the LP-Gas odorant and
you think you should, assume you have a leak. Then take
the same immediate action recommended above for the
occasion when you do detect the odorized LP-Gas.
• If you experience a complete “gas out,” (the container
is under no vapor pressure), turn the tank valve off
immediately. If the container valve is left on, the container
may draw in some air through openings such as pilot light
orices. If this occurs, some new internal rusting could
occur. If the valve is left open, then treat the container as
a new tank. Always be sure your container is under vapor
pressure by turning it off at the container before it goes
completely empty or having it relled before it is
completely empty.
27297-1-1010Page 4
REQUIREMENTS FOR MASSACHUSETTS
For all side wall horizontally vented gas fueled equipment
installed in every dwelling, building or structure used in whole
or in part for residential purposes, including those owned or
operated by the Commonwealth and where the side wall
exhaust vent termination is less than seven (7) feet above
nished grade in the area of the venting, including but not
limited to decks and porches, the following requirements
shall be satised:
1. INSTALLATION OF CARBON MONOXIDE
DETECTORS.
At the time of installation of the side wall horizontal
vented gas fueled equipment, the installing plumber
or gastter shall observe that a hard wired carbon
monoxide detector with an alarm and battery back-up
is installed on the oor level where the gas equipment
is to be installed. In addition, the installing plumber
or gastter shall observe that a battery operated or
hard wired carbon monoxide detector with an alarm is
installed on each additional level of the dwelling, building
or structure served by the side wall horizontal vented
gas fueled equipment. It shall be the responsibility of
the property owner to secure the services of qualied
licensed professionals for the installation of hard wired
carbon monoxide detectors
a. In the event that the side wall horizontally vented
gas fueled equipment is installed in a crawl space
or an attic, the hard wired carbon monoxide detector
with alarm and battery back-up may be installed on
the next adjacent oor level.
b. In the event that the requirements of this subdivision
can not be met at the time of completion of
installation, the owner shall have a period of thirty
(30) days to comply with the above requirements;
provided, however, that during said thirty (30)
day period, a battery operated carbon monoxide
detector with an alarm shall be installed.
2. APPROVED CARBON MONOXIDE DETECTORS. Each
carbon monoxide detector as required in accordance
with the above provisions shall comply with NFPA 720
and be ANSI/UL 2034 listed and IAS certied.
3. SIGNAGE. A metal or plastic identication plate shall be
permanently mounted to the exterior of the building at
a minimum height of eight (8) feet above grade directly
in line with the exhaust vent terminal for the horizontally
vented gas fueled heating appliance or equipment. The
sign shall read, in print size no less than one-half (1/2)
inch in size, “GASVENT DIRECTLYBELOW.KEEP
CLEAR OF ALL OBSTRUCTIONS”.
4. INSPECTION. The state or local gas inspector of the
side wall horizontally vented gas fueled equipment shall
not approve the installation unless, upon inspection,
the inspector observes carbon monoxide detectors and
signage installed in accordance with the provisions of
248 CMR 5.08(2)(a) 1 through 4.
(b) EXEMPTIONS: The following equipment is exempt
from 248 CMR 5.08(2)(a)1 through 4:
1. The equipment listed in Chapter 10 entitled
“Equipment Not Required To Be Vented” in the
most current edition of NFPA 54 as adopted by
the Board; and
2. Product Approved side wall horizontally vented
gas fueled equipment installed in a room or
structure separate from the dwelling, building or
structure used in whole or in part for residential
purposes.
(d) MANUFACTURER REQUIREMENTS - GAS
EQUIPMENT VENTING SYSTEM NOT PROVIDED.
When the manufacturer of a Product Approved
side wall horizontally vented gas fueled equipment
does not provide the parts for venting the ue
gases, but identies “special venting systems”,
the following requirements shall be satised by the
manufacturer:
1. The referenced “special venting system”
instructions shall be included with the appliance
or equipment installation instructions; and
2. The “special venting systems” shall be Product
Approved by the Board, and the instructions
for that system shall include a parts list and
detailed installation instruction.
(e) A copy of all installation instructions for all Product
Approved side wall horizontally vented gas fueled
equipment, all venting instructions, all parts lists
for venting instructions, and/or all venting design
instructions shall remain with the appliance or
equipment at the completion of the installation.
27297-1-1010Page 5
Sate of Massachusetts: The installation must
be made by a licensed plumber or gas tter in the
Commonwealth of Massachusetts.
INTRODUCTION
WARNING
The safety information listed below must be followed
during the installation, service, and operation of this
product. Failure to following the safety recommendations could result in possible damage to the equipment, serious personal injury, or death.
Additional code information listed below is for reference
purposes only and does not necessarily have
jurisdiction over local or state codes. Always consult with local authorities before installing any gas
appliance.
Combustion and Ventilation Air
U.S.: National Fuel Gas Code NFPA 54/ANSI Z223.1(NFGC),
Air for Combustion and Ventilation.
Electrical Connections
U.S.: National Electrical Code (NEC) ANSI/NFPA 70
Gas Piping and Gas Pipe Pressure Testing
U.S.: NFGC and National Plumbing Codes
General Installations
U.S.: Current edition of the NFGC and NFPA 90B. For copies
contact the National Fire Protection Association Inc.,
Batterymarch Park, Quincy, MA 02269 or American Gas
Association, 400 N. Capitol, N.W., Washington DC 20001
or www.NFPA.org.
Safety
U.S.: NFGC NFPA 5/ANSI Z223.1
27297-1-1010Page 6
SPECIFICATIONS & ACCESSORIES
Fireplace Mantis ModelsF(F,I,W)28BM(N,P)
Input BTU/HR (KW/H)15,000 Rear - 13,000 Front
Height24-9/16”
Width28”
Depth17-3/16”
Gas Inlet (Pipe)3/8” Flair
Electrical - The unit comes equipped with a 5 foot (1.5 m)
Electrical - The unit comes equipped with a 5 foot (1.5 m)
3 pronged cord, for connection to an approved
115 VAC, 60 Hz , 5A (maximum) wall receptacle.
Vent Length - 40 Feet maximum equivalent.
27297-1-1010Page 7
INSTALLATION AND GENERAL SAFETY INFORMATION
General Information
This series is designed certied in accordance with American
National Standard/CSA Standard Z21.88 as a Gas Fireplace
Heater to be installed according to these instructions.
Any alteration of the original design, installed other than
as shown in these instructions will be the responsibility
of the person and company making the changes, and will
void the warranty. This product may not be used with any
type of gas other than what is shown on the rating plate.
Important
All Correspondence should refer to complete Model Number,
Serial Number and type of gas.
Installation
Installation, replacement, gas piping, gas utilization equipment
or accessories, and the repair and service of this equipment
must be performed by a qualied agency. The term “qualied
agency” means any individual, rm, corporation or company which
either in person or through a representative is engaged in and is
responsible for (a) the installation or replacement of gas piping or
(b) the connection, installation, repair or servicing of equipment,
who is experienced in such work, familiar with all precautions
required and has complied with all the requirements of the
authority having jurisdiction.
• This installation must conform with local codes, or in the
absence of local codes, the National Fuel Gas Code,
NFPA 54/ANSI Z223.1.
• This appliance, when installed, must be electrically ground-
ed in accordance with local codes or. In the absence of lo-
cal codes, with the National Electrical Code, ANSI/NFPA
70.
• Provide adequate clearances around the heater for servic-
ing and ensure there are no obstructions to the combustion air intake situated at the back of the heater. Refer to
Pages 16 to 19.
• The Mantis Power-Vent High-Efciency Fireplace must
be installed on a at, solid continuous surface (i.e. wood,
metal, concrete). Rough or uneven surfaces can cause
vibration or humming in the heater.
• This appliance does need to be installed in such a way
where the heater can be removed for servicing the heat
exchanger and the ue that are located in the rear section
of the heater.
•This appliance is equipped with a three-prong
[grounding] plug for your protection against shock
hazard and should be plugged directly into a
properly grounded three-prong receptacle. Do not cut
or remove the grounding prong from this plug. For
an ungrounded receptacle, purchase an adapter with two
prongs and a wire for grounding.
Note: Under no circumstances should the appliance be
installed under conditions that would not allow for
easy removal of the appliance to carry out routine
inspection and service to the appliance.
Note: Where a mantel surround is being used on
insert installations and zero clearance replace
installations, the combustion air intake slot located in
the top mantel surround must not be obstructed. This
will allow combustion air to enter through the slot to the
combustion air inlet located at the back of the heater.
Note: During initial ring of this unit, residual oil from the
heat exchanger may bake off and smoke may occur.
Provide adequate ventilation to the area where the
heater is installed to prevent triggering of smoke
alarms. Refer to page 31 for more detail.
A manufactured home (USA only) or mobile home OEM
installation must conform with the Manufactured Home
Construction and Safety Standard, Title 24 CFR, Part 3280,
or when such a standard is not applicable, the Standard for
Manufactured Home Installations, ANSI/NCSBCS Z225.1, or
Standard for Gas Equipped Recreational Vehicles and Mobile
Housing, CSA Z240.0.
Installation on Combustible Flooring
If this appliance is to be installed directly on carpeting, tile,
or other combustible material, other than wood ooring, the
appliance shall be installed on a metal or wood panel extending the full width and depth of the appliance.
The base referred to above does not mean the re-proof
base as used on wood stoves. The protection is primarily for
rugs that may be extremely thick and light-color tile that can
discolor.
Installation in Residential Garages
Gas utilization equipment in residential garages shall be
installed so that all burners and burner ignition devices are
located not less than 18 inches (457 mm) above the oor. The
equipment shall be located, or protected, so it is not subject to
physical damage by vehicles.
Operation of Heater During Construction
The heater shall not be used during construction.
WARNING
Do not operate appliance with the glass front removed, or if it is cracked or broken. Replacement of
the glass shall be performed by a licensed or quali-
edserviceperson
27297-1-1010Page 8
GAS SUPPLY
All gas piping must be installed in compliance with local
codes and utility regulations. In the absence of local codes
the installation must comply with NFCG NFPA 54/ANSI
Z223.1.
Note: Never use plastic pipe. Check to conrm whether your
local codes allow copper tubing or galvanized.
Where permittted, exible gas connectors must be certied
to the following standards:
— ANS Z21.24 Appliance Connectors of Corrugated Metal
Tubing and Fittings
— ANS Z21.45 Assembled Flexible Appliance Connectors
of Other Than All-Metal Construction
The above connectors may be used if acceptable by the
uthority having jurisdiction. The state of Massachusetts
requires that a exible appliance connector cannot exceed
three feet in length.
A drip leg should be installed in the vertical gas supply pipe
run to the unit.
Manual Shut-off Valve
Some local regulations require the installation of a
manual shut-off valve and ground joint union external to the
appliance. The shutoff should be accessible for service
and/or emergency use. Consult the local utility or gas
supplier for additional requirements regarding the
placement of the manual shut off valve. Compounds used
on threaded joints of gas piping shall be resistant to the
action of liqueed petroleum gases.
Leak Testing
WARNING - FIRE OR EXPLOSION HAZARD
Important Note:
When pressure testing the gas supply lines at pressures
greater than ½ psig (14 in. w.c.), the gas supply piping system must be disconnected from the appliance
to prevent damage to the gas control valve. If the test
pressure is less than or equal to ½ psig (14 in. w.c.),
close the manual shut-off valve.
Pressure Testing of the Gas Supply System
1. To check the inlet pressure to the gas valve, a 1/8 inch
N.P.T. plugged tapping, accessible for test gauge
connection, must be placed immediately upstream of
the gas supply connection to the appliance.
2. The appliance and its individual shutoff valve must be
disconnected from the gas supply piping system during
any pressure testing of that system at test pressures in
excess of 1/2 psig.
3. The appliance must be isolated from the gas supply
piping system by closing its individual manual shutoff
valve during any pressure testing of the gas supply
piping system at test pressures equal to or less than
connections using a commercially available soap
solution. A re or explosion may result causing
property damage, personal injury or loss of life.
Failure to follow the safety warnings exactly could
result in serious injury, death or property damage.
After gas piping to the heater is complete, all connections
must be tested for gas leaks. This includes pipe connections at the main gas valve, emergency shutoff valve and
exible gas connectors (if applicable). The soap and water
solution can be applied on each joint or union using a small
paintbrush. If any bubbling is observed, the connection is
not sealed adequately and must be retightened. Repeat
the tightening and soap check process until the bubbling
ceases.
27297-1-1010Page 9
VENT CLEARANCES
US Installation
A =Clearance above any grade,
B =Clearance to window or door
C =Clearance to permanently
D =Vertical clearance to venti-
E =Clearance to unventilated
F =Clearance of outside corner*
G =Clearance of inside corner*
H =Clearance to each side of
I =Clearance to service regulator
1
veranda, porch or balcony
that may be opened
closed windows
lated soft located above the
terminal within a horizontal
distance of 2 ft (61 mm) from
the center line of the terminal
soft
center line extended above
meter/regulator assembly
vent outlet
12 in (30 cm)
6 in (15 cm) for appliances ≤
10,000 Btu/h (3 kW), 9 in (23
cm) for appliances > 10,000
Btu/h (3 kW) and ≤ 50,000
Btu/h (15 kW), 12 in (30 cm)
for appliances > 50,000 Btu/h
(15 kW)
Figure 1
J =Clearance to non-mechanical
air supply inlet to building or
the combustion air inlet to any
other appliance
K =Clearance to a mechanical air
supply inlet
*
*
*
*
*
L =Clearance above paved
sidewalk or paved driveway
located on public property †
M =Clearance under veranda,
porch deck, or balcony ¥
1
In accordance with the current ANSI Z223.1/NFPA 54, National
Fuel Gas Code
†A vent shall not terminate directly above a sidewalk or paved
driveway that is located between two single family dwellings
and serves both dwellings.
¥Permitted only if veranda, porch, deck or balcony is fully open
on a minimum of two sides beneath the oor.
*For clearances not specied in ANSI Z223.1/NFPA 54 or CSA
B149.1, refer to local codes.
6 in (15 cm) for appliances ≤
10,000 Btu/h (3 kW), 9 in (23
cm) for appliances > 10,000
Btu/h (3 kW) and ≤ 50,000
Btu/h (15 kW), 12 in (30 cm)
for appliances > 50,000 Btu/h
(15 kW)
3 ft (91 cm) above if within 10
ft (3 m) horizontally
*
*
27297-1-1010Page 10
VENTING REQUIREMENTS
12” MIN TO GRADE.
(RECOMMENDED 12” MIN
TO MAX EXPECTEDSNOWLEVEL)
TYPICAL BOTH PIPES
6” Min
3” Min
24” Max
WARNING
This appliance must not be vented with any other
appliances, even if that appliance is of the
condensing type. Common venting can result in
severe corrosion of other appliances or their venting
and can allow combustion gases to escape through
such appliances or vents. Do not vent the heater into
areplacechimneyorbuildingchase.
WARNING
Upon completion of the installation, carefully
inspect the entire ue system to assure it is
properly sealed. DO NOT use any vent material other
system can result in serious personal injury or death
due to exposure of ue products, including carbon
monoxide.
The Mantis is classied as a “Category IV” appliance,
which requires special venting materials and installation
procedures. Installations can be Conventional (1-pipe) and
Direct Vent (2-pipe). In selecting a location for installation,
it is necessary to provide adequate clearances for servicing
and proper installation.
All vent and combustion air pipes and ttings must be
Schedule 40 PVC and meet the ANSI/ASTM Standard
D1785. Cement must conform to ASTM Standard D2564.
It is recommended that the Mantis Power-Vent HighEfciency Fireplace be located on an exterior wall for ease
of venting. The ue exhaust pipe and inlet air pipe should
be located between wall studs. The required opening for
venting is 1-7/8 inch in diameter for 1-1/2 inch PVC pipe.
The minimum distance from the center of the vent cap to the
nearest outside corner or obstruction is 12 inches. The ue
outlet must be at least 12 inches from any opening which
ue gases could enter the building. See Figure 1. The
ue outlet must be a minimum distance of 6 feet from any
pressure regulator.
The bottom of the exhaust vent terminal and the air intake
shall be located at least 12 inches above grade and must be
vented outside. It is recommended the exhaust and intake
be located 12 inches from the maximum snow level.
The ue pipe must be supported on horizontal vent runs.
The ue pipe needs to be supported every 3 feet. All
horizontal runs of the ue must be pitched ¼ inch per foot
either towards the heater or away from the heater. The
minimum vent length protruding from outside the wall is
6 inches. For two-pipe installation, a minimum distance of
3 inches and maximum distance of 24 inches must be
maintained between the pipes. See Figure 2.
Single ue (one-pipe) installations must have a minimum
clearance of 2 inches on the back of the heater for combustion air.
Maximum Vent Length is 40 feet. This includes two
90° elbows, one will be used as the vent terminal, and
the second is at the back of the heater. These two
elbows do not count towards the overall length. Each 90°
elbow used in the vent system will be the equivalent to
3 feet, and each 45° elbow is equivalent to 1.5 feet. The
minimum vent length is 12 inches.
Figure 2
27297-1-1010Page 11
VENT EXAMPLES FOR SINGLE FLUE
2’
5’
27’
VENT TERMINAL
90° ELBOW
(NOT COUNTED)
90° ELBOW
3’
FIRST 90° ELBOW
DOES NOT GET COUNTED
WHEN WITHIN 6”
OFF BACK OF HEATER
Figure 3 displays a single ue (one-pipe) installation. Because the distance from the heater to the rst elbow is
more than 6 inches, the rst 90° elbow does need to be
considered into the total vent length. The equivalent
length of the second 90° elbow also needs to be added to
the total length, but the third elbow does not since it is the
H = 5’ + 2’ = 7’
V = 27’
(2) - 90° = 6’
Total = 40’
ue terminal. The total horizontal vent length of the ue
system is 7 feet, and the total vertical length is 27 feet. The
two 90° elbows are equivalent to 6 feet, bringing the total to
40 feet.
Figure 4 is an example of how the heater can be vented if
the ue outlet is below the level of the oor.
Figure 4
Minimum Exterior Grade Dimension - Single Flue, Hori-
zontal Venting Below Floor
Figure 3
Single Flue - Horizontal Tall Vent Run
Example Calculation Max Vent Run 40 feet
27297-1-1010Page 12
DIRECT VENT AND COLINEAR VENT EXAMPLES
12” MIN TO GRADE
(RECOMMENDED 12” MIN.
TO MAX EXPECT SNOW LEVEL)
6” MIN.
9” MIN.
3” MIN.
2” MIN.
3” MIN.
12” MIN. TO ROOF
(RECOMMENDED 12”
MIN TO MAX. EXPECTED
SNOW LEVEL)
PTRAP
90° ELBOW
3’
COLINEAR ADAPTER
5’
10’
FIRST 90° ELBOW
DOES NOT GET COUNTED
WHEN WITHIN 6” FROM THE
BACK OF HEATER
H=5’+6’ =11’
V=10’ +10’ =20’
(3) 90°=9’
=40’TOTA L
6’
90° ELBOW
3’
10’
Figure 5 displays a two-pipe installation. Because the
distance from the heater to the rst elbow is more than
6 inches, the rst 90° elbow does need to be considered
into the total vent length. The equivalent length of the
second 90° elbow also needs to be added to the total length.
The third elbow also needs to be included. The equivalent
length of the PTrap does not need to be added since it is
the termination. The total horizontal vent length of the ue
system is 11 feet, and the total vertical length is 20 feet. The
three 90° elbows are equivalent to 9 feet, bringing the total
to 40 feet.
Note: Exhaust must be a
minimum of 3 inches above
air intake inlet.
Note: The exhaust must be a minimum of 3 inches above
the inlet air pipe. The ue must be at least 12 inches from
the roof line, and it is recommended to be at least 12 inches
above the maximum expected snow level as indicated in
Figures 5, 6 and 7.
Figure 5
Calculation example of vent run maximum 40 feet
Figure 6
27297-1-1010Page 13
DIRECT VENT AND COLINEAR VENT EXAMPLES
COLINEAR ADAPTER
12” MINIMUM TO GRADE
RECOMMENDED 12” MINIMUM T O
MAXIMUM EXPECTED SNOW LEVEL
REAR SHROUD
SINGLE FLUE ADAPTER
H
FLASHING
REQUIRED
H
REQUIRED HEIGHT IS 12”
MINIMUM. IT IS RECOMMENDED
TO BE 12” ABOVE THE
EXPECTED SNOW LEVEL.
AIR INTAKE
PTRAP,290 EBLOWS
(SUPPLIED BY INSTALLER).
PTRAP TO FACE AWAY FROM ROOF.
o
3” -24”
PVC CEMENT
Figure 7
In direct vent applications, a minimum distance between
the two pipes is 3 inches and the maximum distance is 24
inches. The ue exhaust and air inlet can be terminated
with either a PTrap or two 90° elbows as shown in Figures
8, 11 and 12. The Vertical Termination Cap (Part number
PVVTC) can also be used.
Figure 9 - PVVTC Vertical Termination Cap
Figure 10
Vertical termination cap used with 1-1/2 inch
PVC pipe installation.
Cap also used with colinear transition plate.
Figure 8
27297-1-1010Page 14
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