Empire Comfort Systems White Mountain Hearth VFP24FP20LN-1 Quick start guide

UNVENTED GAS FIREPLACE
HYDRAULIC
THERMOSTAT MODELS:
VFP24FP2(0,1,2,3)L(N,P)-1
MILLIVOLT MODELS:
VFP24FP3(0,1,2,3)L(N,P)-1
VFP24FP3(0,1,2,3)L10(N,P)-1 (10,000 BTU UNIT)
INTERMITTENT PILOT MODELS:
VFP24FP7(0,1,2,3)L(N,P)-1
VFP24FP7(0,1,2,3)L10(N,P)-1 (10,000 BTU UNIT)
The Vail Vent-Free Gas Fireplaces
WARNING
FIRE OR EXPLOSION HAZARD
Failure to follow safety warnings exactly
could result in serious injury, death or
property damage.
— 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.
• Leave the building immediately.
• 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 supplier.
INSTALLER:
Leave this manual with the appliance.
CONSUMER:
Retain this manual for future reference.
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.
This is an unvented gas-red heater. It uses
air (oxygen) from the room in which it is
installed. Provisions for adequate combustion
and ventilation air must be provided. Refer
to page 7.
WATERVAPOR:ABY-PRODUCTOFUNVENTED
ROOM HEATERS
Water vapor is a by-product of gas combustion.
An unvented room heater produces
approximately one (1) ounce (30ml) of water
for every 1,000 BTU's (.3KW's) of gas input
per hour. Refer to pages 7 and 8.
INSTALLATION INSTRUCTIONS
AND OWNER’S MANUAL
Page 1

30411-17-0120Page 2
TABLE OF CONTENTS
SECTION PAGE
IMPORTANT SOOT PREVENTION STEPS ................................................................................................................ 3
PRODUCT SPECIFICATIONS..................................................................................................................................... 4
FIREPLACE DIMENSIONS ......................................................................................................................................... 5
CLEARANCES............................................................................................................................................................. 6
COMBUSTIBLE MATERIAL......................................................................................................................................... 6
SPECIFICATIONS........................................................................................................................................................ 7
WATER VAPOR: A BY-PRODUCT OF UNVENTED ROOM HEATERS ...................................................................... 7
PROVISIONS FOR ADEQUATE COMBUSTION & VENTILATION AIR ................................................................... 7-8
INTRODUCTION.......................................................................................................................................................... 9
GAS SUPPLY............................................................................................................................................................. 10
INSTALLATION OF FIREPLACE INTO MANTEL .......................................................................................................11
BUILT-IN FIREPLACE INSTALLATION...................................................................................................................... 12
VFP24 LOG IDENTIFICATION .................................................................................................................................. 13
LOG PLACEMENT................................................................................................................................................ 14-18
PLACEMENT OF GLOWING EMBERS (ROCK WOOL)........................................................................................... 19
OPERATION INSTRUCTIONS/FLAME APPEARANCE ............................................................................................ 19
PILOT FLAME CHARACTERISTICS ......................................................................................................................... 20
HYDRAULIC THERMOSTAT MODELS LIGHTING INSTRUCTIONS ....................................................................... 21
10,000 BTU MILLIVOLT CONTROL VALVE LIGHTING INSTRUCTIONS ................................................................ 22
MILLIVOLT CONTROL LIGHTING INSTRUCTIONS................................................................................................. 23
MILLIVOLT WIRING................................................................................................................................................... 24
MILLIVOLT TROUBLESHOOTING SYMPTOMS, POSSIBLE CAUSES AND CORRECTIONS ............................... 25
INTERMITTENT PILOT LIGHTING INSTRUCTIONS................................................................................................ 26
INTERMITTENT CONTROL SYSTEM OPERATING INSTRUCTIONS..................................................................... 27
INTERMITTENT CONTROL SYSTEM WIRING DIAGRAM....................................................................................... 28
INTERMITTENT CONTROL SYSTEM TROUBLESHOOTING.................................................................................. 29
TROUBLESHOOTING .......................................................................................................................................... 30-31
PARTS LIST .......................................................................................................................................................... 32-33
PARTS VIEW ............................................................................................................................................................. 34
MAINTENANCE AND SERVICE ................................................................................................................................ 35
IMPORTANT SAFETY INFORMATION...................................................................................................................... 36
SAFETY INFORMATION FOR USERS OF PROPANE GAS..................................................................................... 37
MASTER PARTS DISTRIBUTOR LIST...................................................................................................................... 38
HOW TO ORDER REPAIR PARTS............................................................................................................................ 38
WARRANTY............................................................................................................................................................... 39

30411-17-0120 Page 3
NOTICE IMPORTANT NOTICE
INSTALLER - SERVICE PERSON - HOMEOWNER
SOOT MAY BE CREATED IF THE FOLLOWING DIRECTIONS ARE NOT FOLLOWED.
IMPORTANT SOOT PREVENTION STEPS
1. Ensure the air shutter is set to the specication. See Figures
1 and 3 and the table on page 4.
2. Ensure burner, venturi, and air shutter are free of dirt, lint animal
hair (i.e. cat and dog) or anything that may block the needed
air ow. See Cleaning and Servicing, page 18.
3. WARNING: Do not allow fans to blow directly into the
replace. Avoid any drafts that alter burner ame patterns.
Pay particular attention to ceiling fans and exhaust fans.
4. Do not place trash, logs or other articles on the log set during
operation.
5. Avoid the use of scented air fresheners while the log set is in
operation. A residue can be produced which may produce soot.
6. Avoid the use of decorative or scented candles while the log set
is in operation. Soot may be produced from the by-products of
a burning candle. Some candles also produce soot.
7. Do not place lava rocks on burner or burner ports. The lava
rocks should only be placed on the replace oor.
8. Do not place rock wool (embers) over the large ports of the
burner.
9. Check level of ceramic media in burner, if the burner has ceramic
media. Burner should be full, up to the level of the openings
in the burner top.
10. Annual inspection and cleaning by your dealer or qualied
service technician is recommended to prevent malfunction
and/or sooting.
11. Install logs according to the installation instructions. Do not
alter log placement from the prescribed layout in this manual.
12. Verify the venturi tube is not bent or distorted, The main burner
orice must be centered in the venturi tube for proper combustion
and to prevent sooting.
13.
Verify the air shutter for the correct setting. Refer to the tables for
specic air shutter settings for each model.
Natural Gas Models - The air shutter setting must be 1/16".
See Figures 1 and 2 and Table 1 on page 4.
NOTICE: Orice shield removed for photo clarity.
Figure 1 - 1/16" Opening Shown
Test 1/16" air shutter setting with a round object like a drill bit.
The object should barely slide between the opening. See Figure 2.
Figure 2 - 1/16" Opening Shown
Propane Gas Model - The air shutter setting must be "fully open."
See Figure 3 and table on page 4. The air shutter setting must
be set to the maximum opening.
NOTICE: Orice shield removed for photo quality.
Figure 3 - Air Shutter Fully Open

30411-17-0120Page 4
PRODUCT SPECIFICATIONS
TABLE 1 - AIR SHUTTER OPENING
Model Air Shutter Opening
VFP24FP2(0,1,2,3)LN 1/16
VFP24FP3(0,1,2,3)LN 1/16
VFP24FP3(0,1,2,3)L10N 1/16
VFP24FP7(0,1,2,3)L,N 1/16
VFP24FP7(0,1,2,3)L10N 1/16
TABLE 2 - AIR SHUTTER OPENING - PROPANE GAS MODELS
Model Air Shutter Opening
VFP24FP2(0,1,2,3)LP Fully Open
VFP24FP3(0,1,2,3)LP Fully Open
VFP24FP3(0,1,2,3)L10P Fully Open
VFP24FP7(0,1,2,3)LP Fully Open
VFP24FP7(0,1,2,3)L10P Fully Open
NATURAL GAS PROPANE GAS
Hydraulic Millivolt IP Hydraulic Millivolt IP
Regulator Pressure Setting 6.0 3.5 3.5 10.0 10.0 10.0
Gas Inlet Pressure - Maximum 10.5 10.5 10.5 13.0 13.0 13.0
Gas Inlet Pressure - Minimum 7.0 5.0 5.0 11.0 11.0 11.0
MODEL GAS VALVE TYPE ORIFICE BTUH MAX. RATE BTUH MIN. RATE
VFP24FP2(0,1,2,3)LN N Hydraulic #49 20,000 10,000
VFP24FP2(0,1,2,3)LP P Hydraulic #55 20,000 10,000
VFP24FP3(0,1,2,3)LN N Millivolt #43 20,000 14,000
VFP24FP3(0,1,2,3)LP P Millivolt #55 20,000 14,000
VFP24FP3(0,1,2,3)L10N N Millivolt #53 10,000 10,000
VFP24FP3(0,1,2,3)L10P P Millivolt #64 10,000 10,000
VFP24FP7(0,1,2,3)LN N IP #43 20,000 14,000
VFP24FP7(0,1,2,3)L,P P IP #55 20,000 14,000
VFP24FP7(0,1,2,3)L10N N IP #53 10,000 10,000
VFP24FP7(0,1,2,3)L10P P IP #64 10,000 10,000
ACCESSORIES
FBB6 Automatic Blower
VPP1A-22 Aged Brick Liner
VFF24HP-1 Hammered Pewter Trim Kit
ACCESSORIES FOR MILLIVOLT AND
INTERMITTENT MODELS ONLY
FRBC Battery Operated Remote Control
FRBTC Battery Operated Remote Control w/Thermostat
FREC Electric Remote Control
FWS Wall Switch
TMV Wall Thermostat Millivolt - Reed Switch
TRW Wireless Remote Wall Thermostat

30411-17-0120 Page 5
FIREPLACE DIMENSIONS
B
E
G
AD
Q
K
C
LM
INDEX LETTER DIMENSION DESCRIPTION VFP24
Dimensions in Inches
AThe maximum height of rebox face (excluding standoffs) 26-1/2
BThe maximum width of the rebox face (excluding nailing anges) 23
CThe maximum depth of the rebox 11
DThe height of the rebox opening 17-1/2
EThe width of the rebox opening 19-1/2
FThe interior depth of the rebox (not shown) 9-3/8
GThe rear exterior width of the rebox (not shown) 17-1/4
K Height from the bottom of the box to the gas line opening 2-5/8
L Depth from the front of the box to gas line opening 4-13/16
M Depth from rear of box to gas line opening 6-1/8
QDistance from oor to replace opening 4-7/8
N/A - Not applicable for this unit.
B
E
G
AD
Q
K
C
LM

30411-17-0120Page 6
CLEARANCES
COMBUSTIBLE MATERIAL
Do not attach combustible material to the mantel of your replace.
This is a re hazard.
Figure 6
No greeting cards, stockings or ornamentation of any type should be
placed on or attached to the replace. This is a heating appliance.
The ow of heat can ignite combustibles.
Minimum Wall and Ceiling Clearances
34 3/16”
(843mm)
4
(101mm)
”
Top of Opening
Figure 4
This fireplace can be installed with zero clearance to
combustible material.
When facing the front of the appliance the minimum clearances to
combustible construction (material) are the following:
1. Clearances from the right side or left side of the replace opening
to any combustible wall or material should not be less than 4
inches.
2. Clearances from the top of the replace opening to the ceiling
should not be less than 34-3/16 inches.
Mantel Clearances for Built-in Installation
15 3/16”
(386mm)
Topof Opening
Mantel
14 7/16”
(367mm)
13 11/16”
(348mm)
12 15/16”
(329mm)
911/16”
(246mm)
8 15/16”
(227mm)
12”
(305mm)
10”
(254mm)
8”
(203mm)
6”
(152mm)
2 1/2”
(63mm)
4”
(102mm)
Figure 5

30411-17-0120 Page 7
Water vapor is a by-product of gas combustion. An unvented room
heater produces approximately one ounce (30ml) of water for every
1,000 BTU's (.3KW's) of gas input per hour. .
Unvented room heaters are recommended as supplemental heat (a
room) rather than a primary heat source (an entire house). In most
supplemental heat applications, the water vapor does not create a
problem. In most applications, the water vapor enhances the low
humidity atmosphere experienced during cold weather.
This heater shall not be installed in a conned space or unusu-
ally tight construction unless provisions are provided for adequate
combustion and ventilation air.
A conned space is an area with volume less than 50 cubic feet per
1,000 Btuh of the combined input rates of all appliances drawing
combustion air from that space. Small areas such as equipment
rooms are conned spaces. Furnaces installed in a conned space
which supply heated air to areas outside the space must draw return
air from outside the space through tightly sealed return air ducts. A
conned space must have 2 openings into the space for combus-
tion air. One opening must be within 12 inches of the ceiling and
the other must be within 12 inches of the oor. The required sizing
of these openings is determined by whether inside or outside air is
used to support combustion, the method by which the air is brought
to the space (vertical or horizontal duct) and by the total input rate
of all appliances in the space.
Unusually Tight Construction
The air that leaks around doors and windows may provide enough
fresh air for combustion and ventilation. However, in buildings of
unusually tight construction, you must provide additional fresh air.
Unusually tight construction is dened as construction
where:
a. Walls and ceilings exposed to the outside atmosphere have
a continuous water vapor retarder with a rating of one perm
or less with openings gasketed or sealed, and
b. Weatherstripping has been added on openable windows and
doors, and
PROVISIONS FOR ADEQUATE COMBUSTION & VENTILATION AIR
WATER VAPOR: A BY-PRODUCT OF UNVENTED ROOM HEATERS
SPECIFICATIONS
ACCESSORIES
FBB6 Automatic Blower
VPP1A-22 Aged Brick Liner
VFF24HP-1 Hammered Pewter Trim Kit
ACCESSORIES FOR MILLIVOLT AND
INTERMITTENT MODELS ONLY
FRBC Battery Operated Remote Control
FRBTC Battery Operated Remote Control w/Thermostat
FREC Electric Remote Control
FWS Wall Switch
TMV Wall Thermostat, Millivolt - Reed Switch
TRW Wireless Remote Wall Thermostat
c. Caulking or sealants are applied to areas such as joints
around window and door frames, between sole plates and
oors, between wall-ceiling joints, between wall panels, at
penetrations for plumbing, electrical, and gas lines, and at
other openings.
If your home meets all of the three criteria above, you must provide
additional fresh air. See “Ventilation Air From Outdoors,” page 7.
Determining if You Have a Conned or Unconned Space
Use this worksheet to determine if you have a conned or
unconned space.
Space: Includes the room in which you will install heater plus any
adjoining rooms with doorless passageways or ventilation grills
between the rooms.
1. Determine the volume of the space (length x width x height).
Length x Width x Height = cu. ft. (volume of
space)
Example: Space size 16 ft. (length) x 10 ft. (width) x 8 ft. (ceiling
height) = 1,280 cu. ft. (volume of space)
If additional ventilation to adjoining room is supplied with grills
or openings, add the volume of these rooms to the total volume
of the space.
2. Divide the space volume by 50 cubic feet to determine the
maximum BTU/Hr the space can support.
(volume of space) ÷ 50 cu. ft. = (maximum
BTU/Hr the space can support)
Example: 1,280 cu. ft. (volume of space) ÷ 50 cu. ft. = 25.6 or
25,600 (maximum BTU/Hr the space can support)
The following steps will help insure that water vapor does not
become a problem.
1. Be sure the heater is sized properly for the application, including
ample combustion air and circulation air.
2. If high humidity is experienced, a dehumidier may be used to
help lower the water vapor content of the air.
3. Do not use an unvented room heater as the primary heat source.
MODEL
VFP24FP3*L
VFP24FP7*L VFP24FP2*L
VFP24FP3*L10 VFP24FP7*L10
Natural Propane Natural Propane Natural Propane Natural Propane
Input
Max. 20,000 20,000 10,000 10,000
Input
Min. 14,000 10,000 10,000 10,000
Orice
Size #43 #55 #49 #55 #53 #64 #53 #64
Air
Shutter
Opening
1/16 FULLY
OPEN 1/16 FULLY OPEN 1/16 FULLY OPEN 1/16 FULLY OPEN
* Indicates optional accessories that may be installed.

30411-17-0120Page 8
3. Add the BTU/Hr of all fuel burning appliances in the space.
Vent-free heater BTU/Hr
Gas water heater BTU/Hr
Gas furnace BTU/Hr
Vented gas heater BTU/Hr
Gas replace logs BTU/Hr
Other gas appliances* + BTU/Hr
Total = BTU/Hr
Example: Vented gas heater 20,000 BTU/Hr
Vent-free heater + 18,000 BTU/Hr
Total = 38,000 BTU/Hr
*Do not include direct-vent gas appliances. Direct vent draws
combustion air from the outdoors and vents to the outdoors.
4. Compare the maximum BTU/Hr the space can support with the
actual amount of BTU/Hr used.
BTU/Hr (maximum the space can support)
BTU/Hr (actual amount of BTU/Hr used)
Example:
25,600 BTU/Hr (maximum the space can support)
38,000 BTU/Hr (actual amount of BTU/Hr used)
WARNING
If the area in which the heater may be operated is smaller than
that dened as an unconned space or if the building is of
unusually tight construction, provide adequate combustion
and ventilation air by one of the methods described in the
National Fuel Gas Code, ANSI Z223.1, Section 5.3 or applicable
local codes.
The space in the above example is a conned space because the
actual BTU/Hr used is more than the maximum BTU/HR the space
can support. You must provide additional fresh air. Your options
are as follows:
A. Rework worksheet, adding the space of an adjoining room. If
the extra space provides an unconned space, remove door
to adjoining room or add ventilation grills between rooms. See
Ventilation Air From Inside Building.
B. Vent room directly to the outdoors. See Ventilation Air From
Outdoors.
C. Install a lower BTU/Hr heater, if lower BTU/Hr size makes room
unconned.
If the actual BTU/Hr used is less than the maximum BTU/Hr the
space can support, the space is an unconned space. You will need
no additional fresh air ventilation.
WARNING
You must provide additional ventilation air in a conned space.
VENTILATION AIR
Ventilation Air From Inside Building
This fresh air would come from an adjoining unconned space. When
ventilating to an adjoining unconned space, you must provide two
permanent openings: one within 12" of the ceiling and one within
12" of the oor on the wall connecting the two spaces (see options
1 and 2, Figure 1). You can also remove door into adjoining room
(see option 3, Figure 1). Each ventilation grill or opening shall have
a minimum free area of one square inch per 1,000 BTU/HR of the
total input rating of the gas equipment in the conned space.
Figure 1
WARNING
Rework worksheet, adding the space of the adjoining
unconned space. The combined spaces must have enough
fresh air to supply all appliances in both spaces.
Ventilation Air From Outdoors
Provide extra fresh air by using ventilation grills or ducts. You must
provide two permanent openings: one within 12" of the ceiling and
one with 12" of the oor. Connect these items directly to the outdoors
or spaces open to the outdoors. These spaces include attics and
crawl spaces. In most cases for direct communication with the
outdoors or direct communication through a vertical duct a free
area opening of one square inch per 4,000 BTU/HR of heater input
rating for each grill. If a horizontal duct is used, a grill free area or
duct opening shall have a free area opening of one square inch per
2,000 BTU/HR for each grill. Follow the National Fuel Code NFPA
54/ANSI Z223.1, Section 5.3 Air for Combustion and Ventilation for
required size of ventilation grills or ducts.
IMPORTANT: Do not provide openings for inlet or outlet air into attic
if attic has a thermostat-controlled power vent. Heated air entering
the attic will activate the power vent.
Figure 2
PROVISIONS FOR ADEQUATE COMBUSTION & VENTILATION AIR

30411-17-0120 Page 9
INTRODUCTION
Instructions to Installer
1. Installer must leave instruction manual with owner after
installation.
2. Installer must have owner ll out and mail warranty card supplied
with unvented room heater.
3. Installer should show owner how to start and operate unvented
room heater.
Always consult your local Building Department regarding regula-
tions, codes or ordinances which apply to the installation of an
unvented room heater.
This appliance may be installed in an aftermarket* manufactured
(mobile) home, where not prohibited by state or local codes.
*Aftermarket: Completion of sale, not for purpose of resale, from
the manufacturer.
Well Head Gas Installations
Some natural gas utilities use “well head” gas. This may affect
the Btu output of the unit and promote sooting. Units shall not be
converted to use well head gas.
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.
WARNING
Any change to this heater or its controls can be dangerous.
Improper installation or use of the heater can cause serious
injury or death from re, burns, explosion or carbon monoxide
poisoning.
Operation
This unvented replace requires no outside venting. State and local
codes in some areas prohibit the use of unvented replace.
Millivolt Controls
The valve regulator controls the burner pressure which should be
checked at the pressure test point. Turn captured screw counter
clockwise 2 or 3 turns and then place tubing to pressure gauge over
test point (Use test point “A” closest to control knob). After taking
pressure reading, be sure and turn captured screw clockwise rmly
to re-seal. Do not over torque. Check for gas leaks.
Millivolt System
When you ignite the pilot, the thermocouple produces millivolts
(electrical current) which energizes the magnet in the gas valve. After
30 seconds to 1 minute time period you can release the gas control
knob and the pilot will stay ON. Allow your pilot ame to operate
an additional one to two minutes before you turn the gas control
knob from the PILOT position to the ON position. This time period
allows the millivolts (electrical current) to build-up to a sufcient
level allowing the gas control to operate properly.
WARNING
This appliance is equipped for (Natural Gas or Propane) Gas.
Field conversion is not permitted.
General Information
This series is design certied in accordance with American National
Standard Z21.11.2 by the Canadian Standards Association as an
Unvented Room Heater and should be installed according to these
instructions.
Any alteration of the original design, installed other than as
shown in these instructions or use with a type of gas not
shown on the rating plate is the responsibility of the person
and company making the change.
Important
All correspondence should refer to complete Model Number, Serial
Number and type of gas.
Attention: During initial use of log you will detect an odor as
the log is cured. Also, during the curing process the ceramic
log will burn with a yellow ame.
Notice: During initial ring of this unit, its paint will bake out, and
smoke will occur. To prevent triggering of smoke alarms, ventilate
the room in which the unit is installed.
Installation on Rugs and Tile
If this appliance is 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 for rugs that are extremely
thick and light colored tile.
Solid-fuels shall not be burned in a masonry or UL 127 factory-
built replace in which an unvented room heater is installed.
Qualied Installing Agency
Installation and replacement of gas piping, gas utilization equipment
or accessories and repair and servicing of equipment shall be per-
formed only 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.
Commonwealth of Massachusetts: The installation must be
made by a licensed plumber or gas tter in the Commonwealth
of Massachusetts.
Sellers of unvented Propane or Natural Gas-red supplemental
room heaters shall provide to each purchaser a copy of 527 CMR
30 upon sale of the unit.
In the Commonwealth of Massachusetts, unvented Propane and
Natural Gas-red space heaters shall be prohibited in bedrooms
and bathrooms.
The installation must conform with local codes or, in the absence
of local codes, with the National Fuel Gas Code, ANSI Z223.1.*
*Available from theAmerican National Standards Institute, Inc. 1430
Broadway, New York, N.Y. 10018.
WARNING
Failure to keep the primary air opening(s) of the burner(s)
clean may result in sooting and property damage.

30411-17-0120Page 10
GAS SUPPLY
Check all local codes for requirements, especially for the size and
type of gas supply line required.
RECOMMENDED GAS PIPE DIAMETER
Pipe
Length
Schedule 40 Pipe
Inside Diameter
Tubing, Type L
Outside Diameter
Natural Propane Natural Propane
0-10 feet
0-3 meters
1/2”
12.7mm
3/8”
9.5mm
1/2”
12.7mm
3/8”
9.5mm
10-40 feet
4-12 meters
1/2”
12.7mm
1/2”
12.7mm
5/8”
15.9mm
1/2”
12.7mm
40-100 feet
13-30 meters
1/2”
12.7mm
1/2”
12.7mm
3/4”
19mm
1/2”
12.7mm
100-150 feet
31-46 meters
3/4”
19mm
1/2”
12.7mm
7/8”
22.2mm
3/4”
19mm
NOTICE: Never use plastic pipe. Check to conrm whether your
local codes allow copper tubing or galvanized.
NOTICE:Since some municipalities have additional local codes, it
is always best to consult your local authority and installation code.
Installing a New Main Shut-Off Valve
Each appliance should have its own manual shut-off valve.
A manual main gas shut-off should be located in the vicinity of the
unit. Where none exists, or where its size or location is not adequate,
contact your local authorized installer for installation or relocation.
Compounds used on threaded joints of gas piping shall be resistant
to the action of liqueed petroleum gases. The gas lines must be
checked for leaks by the installer. This should be done with a soap
solution watching for bubbles on all exposed connections, and if
unexposed, a pressure test should be made.
Never use an exposed ame to check for leaks. Appliance must
be disconnected from piping at inlet of control valve and pipe
capped or plugged for pressure test. Never pressure test with
appliance connected; control valve will sustain damage!
A gas valve and ground joint union should be installed in the gas
line upstream of the gas control to aid in servicing. It is required by
the National Fuel Gas Code that a drip line be installed near the gas
inlet. This should consist of a vertical length of pipe tee connected
into the gas line that is capped on the bottom in which condensation
and foreign particles may collect.
The use of the following gas connectors is recommended:
— ANS Z21.24Appliance Connectors of Corrugated Metal Tubing
and Fittings
— ANS Z21.45Assembled FlexibleAppliance Connectors of Other
Than All-Metal Construction
The above connectors may be used if acceptable by the authority
having jurisdiction. The Commonwealth of Massachusetts requires
that a exible appliance connector cannot exceed three feet in length.
GAS SUPPLY PLUMBING
MANUAL
SHUT-OFF VA LV E
GAS SUPPL
Y
INLET
DRIP LEG
3” MINIMUM
TO
CONTROL
VALVE
Figure 14
Pressure Testing of the Gas Supply System
1. To check the inlet pressure to the gas valve, a 1/8" (3mm) 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 shut-off 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 (3.5 kPa).
3. The appliance must be isolated from the gas supply piping
system by closing its individual manual shut-off valve during
any pressure testing of the gas supply piping system at test
pressures equal to or less than 1/2 psig (3.5 kPa).
Figure 3
Attention! If one of the above procedures results in pressures in
excess of 1/2 psig (14" w.c.) (3.5 kPa) on the appliance gas valve,
it will result in a hazardous condition.
Checking Manifold Pressure
Millivolt and Intermittent Models Natural Gas will have a manifold
pressure of approximately 3.5" w.c. (.871kPa) for maximum input or
1.7" w.c. (.423kPa) for minimum input at the pressure regulator outlet
with the inlet pressure to the pressure regulator from a minimum
of 5.0" w.c. (1.120kPa) for the purpose of input adjustment to a
maximum of 10.5" w.c. (2.614kPa).
Hydraulic Thermostat Models Natural Gas will have a manifold
pressure of approximately 6.0" w.c. (1.49kPa) at the pressure
regulator outlet with the inlet pressure to the pressure regulator
from a minimum of 7.0" w.c. (1.74kPa) for the purpose of input
adjustment to a maximum of 10.5" w.c. (2.615kPa).
Millivolt and Intermittent Models Propane Gas will have a manifold
pressure approximately 10.0"w.c. (2.49kPa) for maximum input or
6.3"w.c. (1.568kPa) for minimum input at the pressure regulator outlet
with the inlet pressure to the pressure regulator from a minimum
of 11.0"w.c. (2.739kPa) for the purpose of input adjustment to a
maximum of 13.0"w.c. (3.237kPa).
Hydraulic Thermostat Models Propane Gas will have a manifold
pressure approximately 10.0"w.c. (2.49kPa) at the pressure regulator
outlet with the inlet pressure to the pressure regulator from a minimum
of 11.0"w.c. (2.739kPa) for the purpose of input adjustment to a
maximum of 13.0"w.c. (3.237kPa).