Empire Comfort Systems BF28BMN-4 User manual

Page 1
INSTALLATION INSTRUCTIONS
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
FIREPLACE MANTIS MODELS
FF28BM(N,P)-2
FI28BM(N,P)-2
FW28BM(N,P)-2
™
EMPIRE
EMPIRE
Comfor t Systems
WARNING
HOT GLASS
DO NOT TOUCH
NEVER
WILL
CAUSE BURNS.
GLASS
UNTIL COOLED.
ALLOW CHILDREN
TO TOUCH GLASS.
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 ill-
ness.
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.
— Do not store or use gasoline or other ammable
vapors and liquids in the vicinity of this or any other
appliance.
— WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use
any phone in your building.
• Immediately call your gas supplier from a
neighbor’s phone. Follow the gas supplier’s
instructions.
• If you cannot reach your gas supplier, call the
re department.
— Installation and service must be performed by a
qualied installer, service agency or the gas sup-
plier.
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 access to a
replace or stove, install an adjustable safety gate to keep
toddlers, young children and other at risk individuals out of
the room and away from hot surfaces.
This appliance maybe installedin 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 use
with other gases, unless a certied kit is used.

27297-5-0511Page 2
TABLE OF CONTENTS
Important Safety Information ............................................................................................................ 3
Safety Information for Users of LP-Gas............................................................................................ 4
Requirements for Massachusetts..................................................................................................... 5
Introduction....................................................................................................................................... 6
Specications and Accessories ........................................................................................................ 7
Installation and General Safety Information ..................................................................................... 8
Gas Supply....................................................................................................................................... 9
Vent Clearances ............................................................................................................................. 10
Venting Requirements .................................................................................................................... 11
Vent Examples for Single Flue ....................................................................................................... 12
Direct Vent and Colinear Vent Examples...................................................................................13-14
Colinear Transition Vent Kit ............................................................................................................ 15
Vent Adaptor Kits ............................................................................................................................ 15
Rough Framing Dimensions........................................................................................................... 16
Insert Into Masonry Fireplace......................................................................................................... 17
Bay Window Mantis Clearance to Combustibles............................................................................ 18
Fireplace Mantis Clearance to Combustibles................................................................................. 19
Bay Window Mantis Specications............................................................................................20-21
Fireplace Mantis Specications.................................................................................................22-23
Gas Connection Installation............................................................................................................ 24
Bay Window Mantis Log Set Installation Instructions..................................................................... 25
Fireplace Mantis Log Set Installation Instructions .......................................................................... 26
Wiring ............................................................................................................................................. 27
Start Up Check List......................................................................................................................... 28
Lighting Instructions........................................................................................................................ 29
Start Up and Adjustments..........................................................................................................30-31
Automatic Humidier Operation...................................................................................................... 31
Optional Controls............................................................................................................................ 32
Maintenance & Service..............................................................................................................33-34
Master Parts Distributor List ........................................................................................................... 35
How To Order Repair Parts ............................................................................................................ 35
Bay Window Mantis Parts List...................................................................................................36-37
Bay Window Mantis Parts View.................................................................................................38-39
Fireplace Mantis Parts List ........................................................................................................40-41
Fireplace Mantis Parts View........................................................................................................... 42
Warranty Terms .............................................................................................................................. 43
SECTION PAGE

27297-5-0511 Page 3
IMPORTANT SAFETY INFORMATION
THIS IS A HEATING APPLIANCE
WARNING
This appliance must be installed and repaired by
a qualied service person who is familiar with the
proper installation and operation of the Mantis Pow-
er-Vent High Efciency Fireplace. Installers who are
not familiar with the installation of the Mantis and
have questions, should contact Empire Comfort Sys-
tems, Inc. prior to installing the appliance to avoid
creating a hazardous operating condition.
• Due to high temperatures the appliance should be
located out of trafc and away from furniture and
draperies.
• Children and adults should be alerted to the haz-
ards of high surface temperatures and should stay
away to avoid burns or clothing ignition.
• Young children should be carefully supervised
when they are in the same room as the appliance.
Toddlers, young children and others may be sus-
ceptible to accidental contact burns. A physical
barrier is recommended if there are at risk indi-
viduals in the house. To restrict access to a re-
place 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.
• Clothing or other ammable material should not
be placed on or near the appliance.
• Any safety screen or guard removed for servicing an
appliance, must be replaced prior to operating the
appliance.
• Keep burner and control compartment clean.
• For manufactured home (USA only) or mobile home
or residential installation convertible for use with
natural gas and liqueed 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
qualied service person. More frequent cleaning may
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.
• DO NOT put anything around the heater that will
obstruct the ow of combustion and ventilation
air.
• DO keep the appliance area clear and free from
combustible material, gasoline and other ammable
vapors and liquids.
• Do examine venting system periodically and re-
place damaged parts.
• Do make a periodic visual check of burner. Clean
and replace damaged parts.
• DO NOT use this heater if any part has been under
water. Immediately call a qualied service techni-
cian to inspect the heater and to replace any part
of the control system and any gas control which
has been under water.
• DO NOT operate this appliance without the front
panel installed.
Note to the Installer
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.
Safety markings are frequently used in this manual to designate a degree or level of
seriousness and should not be ignored.
WARNING indicates a potentially hazardous situation that if not avoided, could re-
sult in personal injury or death.
CAUTION indicates a potentially hazardous situation that if not avoided, may result
in minor or moderate injury or property damage.

27297-5-0511Page 4
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.
Readthemcarefullynow,thenreviewthempointbypointwiththe
members of your household. Someday, there may not be a
minute to lose, everyone’s safety will depend on knowing ex-
actly 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 reghters 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 reghters check for es-
caped 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 odor-
ant. 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
slightestgas odor.Ifyou detectanyodor, treatit asaserious leak.
Immediately go into action as instructed earlier.
SOME POINTS TO REMEMBER
• 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 sus-
pect that your LP-Gas has a weak or abnormal odor, call
your LP-Gas Dealer.
• If you are not qualied, do not light pilot lights, perform
service, or make adjustments to appliances on the LP-Gas
system. If you are qualied, 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 relling. Cylinders and tanks which
have been out of service for a time may develop internal
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
orices. 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 relled before it is
completely empty.

27297-5-0511 Page 5
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 satised:
1. INSTALLATION OF CARBON MONOXIDE
DETECTORS.
At the time of installation of the side wall horizontal
vented gas fueled equipment, the installing plumber
or gastter 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 gastter 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 qualied
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 certied.
3. SIGNAGE. A metal or plastic identication 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, “GAS VENT DIRECTLY BELOW. 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 identies “special venting systems”,
the following requirements shall be satised 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.
Sate of Massachusetts: The installation must
be made by a licensed plumber or gas tter in the
Commonwealth of Massachusetts.

27297-5-0511Page 6
INTRODUCTION
WARNING
The safety information listed below must be followed
during the installation, service, and operation of this
product. Failure to following the safety recommenda-
tions could result in possible damage to the equip-
ment, 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 con-
sult 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

27297-5-0511 Page 7
Bay Window Mantis Models B(F,I,P)28(B,C,G)M(N,P)
Input BTU/HR (KW/H) 19,000 Rear - 9,000 Front
Height 25-1/4”
Width 28”
Depth 17-5/8”
Gas Inlet (Pipe) 3/8” Flair
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 Pipe: - 1-1/2 inch diameter schedule 40 PVC pipe, 40
feet maximum equivalent length.
SPECIFICATIONS & ACCESSORIES
Fireplace Mantis Models F(F,I,W)28BM(N,P)
Input BTU/HR (KW/H) 15,000 Rear - 13,000 Front
Height 24-9/16”
Width 28”
Depth 17-3/16”
Gas Inlet (Pipe) 3/8” Flair
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 Pipe: - 1-1/2 inch diameter schedule 40 PVC pipe, 40
feet maximum equivalent length.
ACCESSORIES
Common
Part Number Description
FRBTC Battery Operated Remote with Thermostat
FRBTP Battery Operated Remote with Programmable Thermostat
PVCA Colinear Adapter
PVCT Colinear Transition Kit
PVVK-CFA Flex Vent Kit
PVVK-SH Single Flue Horizontal Vent Kit
PVVK-SV Single Flue Vertical Vent Kit
PVVTC Vertical Termination Cap - 1-1/2”
T24V 24 Volt Thermostat
TMV2 Two-Stage Thermostats
TDV1 Wall Thermostat - Wireless Remote
PVVK24H Coaxial Horizontal Direct Vent Kit (24”)
PVVK48H Coaxial Horizontal Direct Vent Kit (48”)
TRW Wall Thermostat - Wireless Remote
Bay Window Mantis
CIFPB-1C Corner Floor Pad Kit
CIPFP-1 Floor Pad Kit
PV-2H Slim Top Cover Kit
PV-4H Short Top Cover Kit
PVE-1 Metal Surround Kit, 35”
PVE-2 Metal Surround Kit, 38”
PVPK Pedestal Kit
PVSH Rear Shroud
Fireplace Mantis
FWK28(BL,CM,HP,SS) In-Wall Surround Kit, Picture Frame
FGK28(BL,SS) In-Wall Surround Kit, Louverless
FIK28(BL,CM,HP,SS) Insert Package
FFK28(BL,CM,HP,SS) Fireplace Mantel Surround Kit

27297-5-0511Page 8
INSTALLATION AND GENERAL SAFETY INFORMATION
General Information
This series is designed certied 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 qualied agency. The term “qualied
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 combus-
tion air intake situated at the back of the heater. Refer to
Pages 16 to 19.
• The Mantis Power-Vent High-Efciency Fireplace must
be installed on a at, solid continuous surface (i.e. wood,
metal, concrete). Rough or uneven surfaces can cause vi-
bration 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 extend-
ing 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 re-
moved, or if it is cracked or broken. Replacement of
the glass shall be performed by a licensed or quali-
ed service person

27297-5-0511 Page 9
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 conrm whether your
local codes allow copper tubing or galvanized.
Where permittted, exible gas connectors must be certied
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 liqueed petroleum gases.
Leak Testing
WARNING - FIRE OR EXPLOSION HAZARD
Never test for leaks with an open ame. Check all
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 connec-
tions 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.
Important Note:
When pressure testing the gas supply lines at pressures
greater than ½ psig (14 in. w.c.), the gas supply pip-
ing 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
1/2 psig.
Recommended Gas Pipe Diameter
Pipe Length Schedule 40 Pipe
Inside Diameter
In Inches
Tubing, Type L
Outside Diameter
In Inches
Nat. L.P. Nat. L.P.
0-10 feet 1/2 3/8 1/2 3/8
10-40 feet 1/2 1/2 5/8 1/2
40-100 feet 1/2 1/2 3/4 1/2
100-150 feet 3/4 1/2 7/8 3/4

27297-5-0511Page 10
Figure 1
VENT CLEARANCES
US Installation 1
A = Clearance above any grade,
veranda, porch or balcony
12 in (30 cm)
B = Clearance to window or door
that may be opened
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)
C = Clearance to permanently
closed windows
*
D = Vertical clearance to venti-
lated soft located above the
terminal within a horizontal
distance of 2 ft (61 mm) from
the center line of the terminal
*
E = Clearance to unventilated
soft
*
F = Clearance of outside corner *
G = Clearance of inside corner *
H = Clearance to each side of
center line extended above
meter/regulator assembly
*
I = Clearance to service regulator
vent outlet
*
J = Clearance to non-mechanical
air supply inlet to building or
the combustion air inlet to any
other appliance
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)
K = Clearance to a mechanical air
supply inlet
3 ft (91 cm) above if within 10
ft (3 m) horizontally
L = Clearance above paved
sidewalk or paved driveway
located on public property †
*
M = Clearance under veranda,
porch deck, or balcony ¥
*
1In 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 specied in ANSI Z223.1/NFPA 54 or CSA
B149.1, refer to local codes.