Hearth & Home Outdoor Lifestyles TWILIGHT-IFT NG User manual

1
Outdoor Lifestyles by Hearth & Home Technologies • TWILIGHT-IFT Installation Manual • 2668-970 Rev. C • 3/21
Models:
Installation Manual
Installation and Appliance Setup
TWILIGHT-IFT
NOTICE: DO NOT discard this manual!
This appliance may be installed as an OEM
installation in manufactured home (USA
only) or mobile home and must be installed
in accordance with the manufacturer’s
instructions and the Manufactured Home
Construction and Safety Standard, Title 24
CFR, Part 3280 in the United States, or the
Standard for Installation in Mobile Homes,
CAN/CSA Z240 MH Series, in Canada.
This appliance is only for use with the type(s)
of gas indicated on the rating plate. This
appliance is not convertible for use with other
gases, unless a certied kit is used.
• DO NOT store or use gasoline or other am-
mable 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 sup-
plier’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.
WARNING:
FIRE OR EXPLOSION HAZARD
Failure to follow safety warnings exactly
could result in serious injury, death, or
property damage.
CAUTION! Risk of Fire! DO NOT store instruction manuals inside replace cavity.
High temperatures could cause a re.
INSTALLER: Leave this manual with the appliance, not inside the appliance.
CONSUMER: Retain this manual for future reference. Do not store inside the appliance.
DANGER
HOT GLASS WILL
CAUSE BURNS.
DO NOT TOUCH GLASS
UNTIL COOLED.
NEVER ALLOW CHILDREN
TO TOUCH GLASS.
A barrier designed to reduce the risk of
burns from the hot viewing glass is provided
with this appliance and must be installed for
the protection of children and other at-risk
individuals.

2Outdoor Lifestyles by Hearth & Home Technologies • TWILIGHT-IFT Installation Manual • 2668-970 Rev C • 3/21
Table of Contents
Installation Standard Work Checklist.................... 3
1 Product Specic and Important Safety Information
A. Appliance Certication ............................4
B. Glass Specications..............................4
C. Thermal Performance Data ........................4
D. Air Inltration, Water Resistance and Structural Tests ...4
E. BTU Specications...............................4
F. High Altitude Installations ..........................5
G. Non-Combustible Materials Specication. . . . . . . . . . . . . . 5
H. Combustible Materials Specication .................5
I. Electrical Codes .................................5
J. California ......................................5
K. Requirements for the Commonwealth of Massachusetts..6
2 Getting Started
A. Design and Installation Considerations ...............7
B. Good Faith Wall Surface/TV Guidelines ..............8
C. Tools and Supplies Needed .......................10
D. Inspect Appliance and Components................. 10
3 Framing and Clearances
A. Appliance Dimension Diagram..................... 11
B. Clearances to Combustibles ......................12
4 Termination Location and Vent Information
A. Vent Terminal Clearances ........................14
5 Appliance Preparation
A. Removing Non-combustible Facing Material Assembly ..15
B. Securing and Leveling the Appliance ................15
C. Installing Non-combustible Facing Material (Outdoor Side)
.............................................18
6 Electrical Information
A. General Information .............................19
B. Wiring Requirements ............................21
7 Gas Information
A. Fuel Conversion ................................22
B. Gas Pressure ..................................22
C. Gas Connection ................................22
D. High Altitude Installations .........................22
E. Air Shutter Setting ..............................23
8 Finishing
A. Mantel and Wall Projections.......................24
B. Decorative Barrier Front Selection ..................25
C. Facing Material.................................28
9 Appliance Setup
A. Fixed Glass Assembly ........................... 32
B. Remove the Shipping Materials ....................33
C. Clean the Appliance .............................33
D. Lava Rock and Ember Placement .................. 33
E. Install the Log Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . 34
F. Appliance Start Up ..............................36
10 Reference Materials
A. Accessories ...................................37
= Contains updated information.
Safety Alert Key:
• DANGER! Indicates a hazardous situation which, if not avoided will result in death or serious injury.
• WARNING! Indicates a hazardous situation which, if not avoided could result in death or serious injury.
• CAUTION! Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
• NOTICE: Used to address practices not related to personal injury.
Note: The term “recommend” or “recommended” does not indicate a requirement. It is a best practice suggested by
Hearth & Home Technologies®.


3
Outdoor Lifestyles by Hearth & Home Technologies • TWILIGHT-IFT Installation Manual • 2668-970 Rev. C • 3/21
Installation Standard Work Checklist
Customer:
Lot/Address:
Model (circle one): TWILIGHT-IFT
Comments: Further description of the issues, who is responsible (Installer/ Builder/ Other Trades, etc) and corrective
action needed _____________________________________________________________________________________
_________________________________________________________________________________________________
_________________________________________________________________________________________________
_________________________________________________________________________________________________
Comments Communicated to party responsible ____________________ by ______________________on ___________
(Builder / Gen. Contractor/) (Installer) (Date)
Appliance Install YES IF NO, WHY?
Required non-combustible board is installed. (Pg. 18) ___________________________
Veried clearances to combustibles. (Pg. 12-13) ___________________________
Fireplace is leveled and secured. (Pg. 15) ___________________________
Electrical Section 6 (Pg 19-21)
Unswitched power (110-120 VAC) provided to the appliance. ___________________________
Switch wires properly installed. ___________________________
Gas Section 7 (Pg 22-23)
Proper appliance for fuel type. ___________________________
Was a conversion performed? ___________________________
Leak check performed and inlet pressure veried. ___________________________
Veried proper air shutter setting for installation type. ___________________________
Finishing Section 8 (Pg 24-31)
Combustible materials not installed in non-combustible areas. ___________________________
Veried all clearances meet installation manual requirements. ___________________________
Mantels and wall projections comply with installation manual requirements. ___________________________
Appliance Setup Section 9 (Pg 32-36)
All packaging and protective materials removed (inside & outside of appliance). ___________________________
Refractories, logs, media and embers installed correctly. ___________________________
Glass assembly installed and secured. ___________________________
Accessories installed properly. ___________________________
Mesh, doors, or decorative front properly installed. ___________________________
Manual bag and all of its contents are removed from inside/under
the appliance and given to party responsible for use and operation. ___________________________
Started appliance and veried no gas leaks exist. ___________________________
This standard work checklist is to be used by the installer in conjunction with, not instead of, the instructions contained in this
installation manual.
2668-972 Rev. C 3/21
= Contains updated information.
Date Installed:
Location of Fireplace:
Installer:
Dealer/Distributor Phone #
Serial #:
Hearth & Home Technologies recommends the following:
• Photographing the installation and copying this checklist for your le.
• That this checklist remain visible at all times on the appliance until the installation is complete.
ATTENTION INSTALLER:
Follow this Standard Work Checklist
WARNING! Risk of Fire or Explosion! Failure to install appliance according to these instructions could lead
to a re or explosion. Install ONLY components and accessories approved by Hearth & Home Technologies.
Unapproved components and accessories could cause replace to overheat.


4Outdoor Lifestyles by Hearth & Home Technologies • TWILIGHT-IFT Installation Manual • 2668-970 Rev C • 3/21
A. Appliance Certication
NOTICE: This installation must conform with local codes.
In the absence of local codes you must comply with the
National Fuel Gas Code, ANSI Z223.1-latest edition in
the U.S.A. and the CAN/CGA B149 Installation Codes in
Canada.
11 Product Specic and Important Safety Information
E. BTU Specications
D. Air Inltration, Water Resistance and
Structural Tests
The Hearth & Home Technologies TWILIGHT-IFT Indoor/
Outdoor Appliance was tested to the following ASTM
standards at the Stork Twin City Testing laboratory.
Air inltration test ASTM:E283-(04). The sample was test-
ed at 1.57 psf (equivalent to a 25-mph windload). Water
resistance test ASTM:E331-00. The test specimen was
tested at the requested test pressures of 8.0 & 25.0 psf.
Structural test ASTM:E330-02. The unit was tested to a
design pressure of 50-psf, a test pressure of 75-psf.
Test Results
C. Thermal Performance Data
Model: TWILIGHT-IFT
Sound Transmission
Class (STC)
Thermal Resistance
(R Value)
Thermal Conductivity
(K Value)
27 0.8hr-sq ft-ºF/BTU 1.25 BTU-in/hr-sq ft-ºF
Model Air Inltration
(ASTM E283)
Water Resistance
(ASTM E331)
Structural Load
(ASTM E330)
TWILIGHT-
IFT
Indoor/Outdoor
0.07CFM/ft2 No leakage
@ 8psf & 25psf
No Blowout
@ 75psf
B. Glass Specications
Tempered Glass (Interior Glass)
Hearth & Home Technologies appliances manufactured
with tempered glass may be installed in hazardous lo-
cations such as bathtub enclosures as dened by the
Consumer Product Safety Commission (CPSC). The
tempered glass has been tested and certied to the re-
quirements of ANSI Z97.1 and CPSC 16 CFR 1202
(Safety Glazing Certication Council SGCC# 1595 and
1597. Architectural Testing, Inc. Reports 02-31919.01
and 02-31917.01).
This statement is in compliance with CPSC 16 CFR Sec-
tion 1201.5 “Certication and labeling requirements”
which refers to 15 U.S. Code (USC) 2063 stating “…Such
certicate shall accompany the product or shall otherwise
be furnished to any distributor or retailer to whom the
product is delivered.”
Some local building codes require the use of tempered
glass with permanent marking in such locations. Glass
meeting this requirement is available from the factory.
Please contact your dealer or distributor to order.
Ceramic Glass (Exterior Glass)
This appliance is equipped with ceramic glass. Replace
glass only with ceramic glass. Please contact your dealer
for replacement glass.
MODEL: TWILIGHT-IFT
LABORATORY: Underwriters Laboratories, Inc. (UL)
TYPE: Direct Vent Gas Appliance
STANDARD: ANSI Z21.50-2019 CSA 2.22-2019
Model Input
BTU/h
Orice Size
(DMS)
TWILIGHT-IFT
(NG)
U.S. or Canada
(0-2000 ft) 38,000 32
Canada
(2000-4500 ft) 34,200 33
TWILIGHT-IFT
(Propane)
U.S. or Canada
(0-2000 ft) 36,000 50
Canada
(2000-4500 ft) 33,300 51
NOT INTENDED FOR USE AS A HEAT SOURCE.
This appliance is decorative in nature and not intended to be
a source of heat.
NOT FOR USE WITH SOLID FUEL.
This appliance is not intended to burn solid fuel.
This product is listed to ANSI standards for “Vented
Decorative Gas Appliances” (and “Gas Fired Appliances
for Use at High Altitudes”.)* Also Certied for Installation
in a Bedroom or a Bedsitting Room.

5
Outdoor Lifestyles by Hearth & Home Technologies • TWILIGHT-IFT Installation Manual • 2668-970 Rev. C • 3/21
G. Non-Combustible Materials Specication
Material which will not ignite and burn. Such materials are
those consisting entirely of steel, iron, brick, tile, concrete,
slate, glass or plasters, or any combination thereof.
Materials that are reported as passing ASTM E 136,
Standard Test Method for Behavior of Materials in
a Vertical Tube Furnace at 750 ºC shall be considered
non-combustible materials.
H. Combustible Materials Specication
Materials made of or surfaced with wood, compressed pa-
per, plant bers, plastics, or other material that can ignite
and burn, whether ame proofed or not, or plastered or
unplastered shall be considered combustible materials.
I. Electrical Codes
NOTICE: This appliance must be electrically wired
and grounded in accordance with local codes or, in the
absence of local codes, with National Electric Code
ANSI/NFPA 70-latest edition or the Canadian Electric
Code CSA C22.1.
• A 110/120 VAC circuit for this product must be pro-
tected with ground-fault circuit-interrupter protection,
in compliance with the applicable electrical codes,
when it is installed in locations such as in bathrooms
or near sinks.
J. California
WARNING: This product and the fuels used to
operate this product (liquid propane or natural
gas), and the products of combustion of such fuels, can
expose you to chemicals including benzene, which is
known to the State of California to cause cancer and
reproductive harm. For more information go to: www.
P65Warnings.ca.gov.
F. High Altitude Installations
NOTICE: If the heating value of the gas has been reduced,
these rules do not apply. Check with your local gas utility
or authorities having jurisdiction.
When installing above 2000 feet elevation:
• In the USA: Reduce input rate 4% for each 1000 feet
above 2000 feet.
• In CANADA: Input ratings are certied without a
reduction of input rate for elevations up to 4500 feet
(1370 m) above sea level. Please consult provincial and/
or local authorities having jurisdiction for installations at
elevations above 4500 feet (1370 m).
Check with your local gas utility to determine proper
orice size.

6Outdoor Lifestyles by Hearth & Home Technologies • TWILIGHT-IFT Installation Manual • 2668-970 Rev C • 3/21
K. Requirements for the Commonwealth of
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, in-
cluding but not limited to decks and porches, the following
requirements shall be satised:
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 addi-
tion, the installing plumber or gas tter shall observe that
a battery operated or hard wired carbon monoxide detec-
tor 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.
In the event that the side wall horizontally vented gas fu-
eled 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.
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 dur-
ing said thirty (30) day period, a battery operated carbon
monoxide detector with an alarm shall be installed.
Approved Carbon Monoxide Detectors
Each carbon monoxide detector as required in accor-
dance with the above provisions shall comply with NFPA
720 and be ANSI/UL 2034 listed and IAS certied.
Signage
A metal or plastic identication plate shall be permanent-
ly 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 fu-
eled heating appliance or equipment. The sign shall read,
in print size no less than one-half (1/2) in. in size, “GAS
VENT DIRECTLY BELOW. KEEP CLEAR OF ALL OB-
STRUCTIONS”.
Inspection
The state or local gas inspector of the side wall horizon-
tally vented gas fueled equipment shall not approve the
installation unless, upon inspection, the inspector ob-
serves carbon monoxide detectors and signage installed
in accordance with the provisions of 248 CMR 5.08(2)(a)1
through 4.
Exemptions
The following equipment is exempt from 248 CMR
5.08(2)(a)1 through 4:
• 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
• Product Approved side wall horizontally vented gas fu-
eled equipment installed in a room or structure separate
from the dwelling, building or structure used in whole or
in part for residential purposes.
MANUFACTURER REQUIREMENTS
Gas Equipment Venting System Provided
When the manufacturer of Product Approved side wall
horizontally vented gas equipment provides a venting
system design or venting system components with the
equipment, the instructions provided by the manufacturer
for installation of the equipment and the venting system
shall include:
• Detailed instructions for the installation of the venting
system design or the venting system components; and
• A complete parts list for the venting system design or
venting system.
Gas Equipment Venting System NOT Provided
When the manufacturer of a Product Approved side wall
horizontally vented gas fueled equipment does not pro-
vide the parts for venting the ue gases, but identies
“special venting systems”, the following requirements
shall be satised by the manufacturer:
• The referenced “special venting system” instructions
shall be included with the appliance or equipment in-
stallation instructions; and
• The “special venting systems” shall be Product Ap-
proved by the Board, and the instructions for that sys-
tem shall include a parts list and detailed installation
instructions.
A copy of all installation instructions for all Product Ap-
proved side wall horizontally vented gas fueled equip-
ment, 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.
See Gas Connection section for additional Common-
wealth of Massachusetts requirements.
Note: The following requirements reference various
Massachusetts and national codes not contained in this
document.

7
Outdoor Lifestyles by Hearth & Home Technologies • TWILIGHT-IFT Installation Manual • 2668-970 Rev. C • 3/21
22 Getting Started
A. Design and Installation Considerations
WARNING! Risk of Fire or Explosion! Read all instruc-
tions before starting the installation.
Direct vent gas appliances are designed to operate with all
combustion air siphoned from outside of the building and
all exhaust gases expelled to the outside. No additional
outside air source is required.
Improper installation, adjustment, alteration, service or
maintenance can cause injury or property damage. For
assistance or additional information, consult a qualied
service technician, service agency or your dealer.
Installation and service of this appliance should be performed by
qualied personnel. Hearth & Home Technologies recommends
HHT Factory Trained or NFI certied professionals.
Outdoor Spaces
For the purposes of these instructions, an appliance is
considered to be outdoors if installed with shelter no more
inclusive than:
1. With walls on all sides, but no overhead cover
2. Within a partial enclosure which includes an overhead
cover and no more than two side walls. These side walls
may be parallel, as in a breezeway, or at right angles to
each other; or
3. Within a partial enclosure which includes an overhead
cover and three sidewalls, as long as 30% or more of
the horizontal periphery of the enclosure is permanently
open.
Note: Screen may be used on the open sides of the shelter,
14x18 and 16x18 screen mesh is approved for use. DO
NOT use solar screen or no-see-um screen.
The TWILIGHT-IFT has been carefully engineered to pro-
vide a unique replace experience. Since it is di󰀨erent
than any other product on the market, care must be taken
when installing this appliance so that our customer does
not experience undesirable performance or conditions.
1. Install the appliance according to this Installation man-
ual paying particular attention to ashing and sealing
instructions.
2. In the cold northern climates pay attention to expo-
sures and prevailing wind conditions when locating
the appliance, the same as you would for locating ex-
terior windows and doors.
The TWILIGHT-IFT has the thermal characteristics of a high
quality window system. Temperatures near the appliance
will be cooler than what is realized with a fully insulated wall.
Operation of the appliance will eliminate any cool drafts
and will provide the room with a comfortable ambiance.
Installation MUST comply with local, regional, state and
national codes and regulations. Consult insurance car-
rier, local building inspector, re o󰀩cials or authorities
having jurisdiction over restrictions, installation inspec-
tion and permits.
Before installing, determine the following:
• Where the appliance is to be installed.
• Gas supply piping requirements.
• Electrical wiring requirements.
• Framing and nishing details.
• Whether optional accessories—devices such as a fan,
wall switch, or remote control—are desired.
• If installing a fan kit, it is recommended for ease of
installation, to install Fan Kit prior to gas line installation.
Note: The fan kit is not approved for use with the TWI-
MOD decorative barrier front.
• Whether optional accessories—devices such as a fan,
wall switch, or remote control—are desired.

8Outdoor Lifestyles by Hearth & Home Technologies • TWILIGHT-IFT Installation Manual • 2668-970 Rev C • 3/21
NOTICE: Surface temperatures listed above are taken with
a temperature measuring probe as prescribed by the test
standard used for appliance certication. Temperatures
on walls or mantels taken with an infrared thermometer
may yield increased temperatures of up to 30 °F (17 °C) or
more depending on the thermometer settings and material
characteristics being measured. Use appropriate nishing
materials that are able to withstand these conditions. For
additional nishing guidelines, see Section 8.
B. Good Faith Wall Surface/TV Guidelines
MEASUREMENTS FROM
TOP EDGE OF THE OPENING
6 in.
18 in.
24 in.
30 in.
36 in.
48 in.
TO CEILING
42 in.
12 in.
200°F
APPLIANCE FRONT
FIREPLACE
OPENING
180°F
160°F
150°F
140°F
130°F
120°F
Figure 2.1 Maximum Interior Wall Surface Temperatures Above
Appliance
Figure 2.1 references the maximum interior wall surface
temperatures above the appliance.

9
Outdoor Lifestyles by Hearth & Home Technologies • TWILIGHT-IFT Installation Manual • 2668-970 Rev. C • 3/21
Figure 2.2 Good Faith TV Guidelines
Item Minimum Dimensions
A 2.5 inches
B 2 inches minimum to 3 inches
maximum
C 18 inches
D Wall Brkt + TV Thickness + 2.5
inches
BB
A
Appliance
TV
Mantel
A
C
Notes:
1. These are good faith recommended clearances only and not a guarantee of compliance with all TV
manufacturers’ maximum allowable opera�ng temperatures.
2. Since every home has unique air flow characteris�cs and maximum allowable opera�ng temperatures
can vary from manufacturer to manufacturer and from model to model, actual TV temperatures should
be validated at the �me of each installa�on. TVs should not be used in situa�ons where the actual TV
temperature exceeds the manufacturers’ maximum allowable opera�ng temperatures iden�fied in the
TV’s technical specifica�ons. Contact the TV’s manufacturer directly if you cannot locate this
informa�on or have ques�ons regarding the informa�on.
3. Mantel height and depth must conform to mantle requirements specified in the appliance installa�on
manual.
4. “C” dimension taken from the top of the hood or appliance opening.
5. Sugges�ons on how to further reduce TV temperatures:
a. Increase “A” dimension.
b. Increase “C” dimension, however, increasing “B” dimension beyond maximum recommended
typically results in higher temperatures.
TV Wall
Bracket
D
Appliance
C
TV on the wall TV recessed into the wall
Good Faith Guidelines for TV Installations Above Appliance
(Interior Side Only)

10 Outdoor Lifestyles by Hearth & Home Technologies • TWILIGHT-IFT Installation Manual • 2668-970 Rev C • 3/21
D. Inspect Appliance and Components
WARNING! Risk of Fire or Explosion! Damaged parts
could impair safe operation. DO NOT install damaged, in-
complete or substitute components. Keep appliance dry.
WARNING! Risk of Fire, Explosion or Electric Shock!
DO NOT use this appliance if any part has been under
water. Call a qualied service technician to inspect the
appliance and to replace any part of the control system
and/or gas control which has been under water.
• Carefully remove the appliance and components from
the packaging.
- Remove the factory supplied Header Flashing.
- Remove and discard the Side Surround Supports.
- Remove the Packaged non-combustible boards from
the side of the appliance.
• The vent system components and decorative barrier
fronts may be shipped in separate packages.
• If packaged separately, the log set and appliance grate
must be installed.
• Report to your dealer any parts damaged in shipment.
Hearth & Home Technologies disclaims any responsibility
for, and the warranty will be voided by, the following actions:
• Installation and use of any damaged appliance or vent
system component.
• Modication of the appliance or vent system.
• Installation other than as instructed by Hearth & Home
Technologies.
• Improper positioning of the gas logs or the glass door.
• Installation and/or use of any component part not approved
by Hearth & Home Technologies.
Any such action may cause a re hazard.
C. Tools and Supplies Needed
Before beginning the installation be sure that the following
tools and building supplies are available.
Hand Tools Tape measure
Level Framing material
Manometer Framing square
Voltmeter Electric drill and bits (1/4 in.)
Plumb line Safety glasses/Gloves
Wrenches Reciprocating saw
1/4 in. nut driver
Non-corrosive leak check solution
1/2 - 3/4 in. length, #6 or #8 Self-drilling screws
Caulking material (300 ºF minimum continuous exposure
rating)

11
Outdoor Lifestyles by Hearth & Home Technologies • TWILIGHT-IFT Installation Manual • 2668-970 Rev. C • 3/21
33 Framing and Clearances
A. Appliance Dimension Diagram
Dimensions are actual appliance dimensions. Use for reference only.
Figure 3.1 Appliance Dimensions
A
B
GAS LINE
ACCESS
C C
D
G
H
I
J
F
E
ELECTRICAL
ACCESS
RT
Q
S
OUTDOOR VIEW
P
O
L
M
INDOOR VIEW
KN
OUTDOOR
OUTDOOR
Location Inches Millimeter
A 2-1/4 57
B 4-3/4 121
C 1/2 13
D 43 1092
E 24 610
F 46-7/8 1191
G 46-7/8 1191
H 9-1/2 241
I 2-1/2 64
J 4-1/2 114
Location Inches Millimeter
K 32-5/8 829
L 36-1/4 921
M 41-7/8 1064
N 21-1/2 546
O 7 178
P 48-5/8 1235
Q 46-1/4 1175
R 21-1/8 537
S 35-5/8 905
T 8 203

12 Outdoor Lifestyles by Hearth & Home Technologies • TWILIGHT-IFT Installation Manual • 2668-970 Rev C • 3/21
B. Clearances to Combustibles
When selecting a location for the appliance it is important
to consider the required clearances to walls (see Figure
3.2).
WARNING! Risk of Fire or Burns! Provide adequate
clearance around air openings and for service access.
Due to high temperatures, the appliance should be lo-
cated out of trac and away from furniture and draperies.
Figure 3.2 Appliance Locations
NOTICE: Illustrations reect typical installations and are
FOR DESIGN PURPOSES ONLY. Illustrations/diagrams
are not drawn to scale. Actual installation may vary due to
individual design preference.
WARNING! Risk of Fire! The exterior side of the TWI-
LIGHT-IFT CANNOT be recessed into the framing.
GLASS EXTERIOR INSULATED ENVELOPE
GLASS
A
B
B
D
C* = 24 INCH (MAX.)
B
GLASS FLUSH TO EXTERIOR INSULATED ENVELOPE
GLASS
E
C* NOTE: Appliance may be installed flush on exterior, interior or
anywhere in between. Any projection of the appliance interior
or exterior must have a properly constructed chase surround-
ing the appliance. The exterior must have proper insulating,
flashing and finishing to ensure an insulated envelope.
FLUSH
TO INTERIOR
PROJECTION
C* = 0 INCH (MIN.)
WARNING! Risk of Fire! The exterior side of the TWILIGHT-IFT
CANNOT be recessed into the framing.
Refer to Section 8.A for mantel and wall projection information.
Consider the mantel or cabinet system to be installed and
comply with the necessary requirements for elevated hearth.
Refer to instructions included with cabinet system.
A B C* D E
Minimum Minimum Minimum Maximum Minimum -
Inches 43 1/2 0 24 36 43
Millimeters 1092 13 0 610 914 1092
* = C dimension may be any length from 0 to 24 inches.

13
Outdoor Lifestyles by Hearth & Home Technologies • TWILIGHT-IFT Installation Manual • 2668-970 Rev. C • 3/21
Figure 3.3 Clearances to Combustibles
H
K
G
F
J
I
Note: Framing dimensions assume use of
1/2 inch thick wall covering materials on
exterior of framing only, and NO sheetrock
on interior of framing.
From top of hood to
ceiling (interior) or
overhang (exterior).
Figure 3.4 Exterior View - Finishing Material Clearances
MINIMUM CLEARANCES
Vinyl Non-vinyl
A36 in. 12 in.
B64-5/16 in. 35-5/16 in.
OVERHANG
A
A
B
SIDING SIDING
SIDING
FINISHING MATERIALS
A
INTERIOR
FRAMING
EXTERIOR
FRAMING
E
D
C
AB
NOTICE: Install appliance on hard metal or wood surfaces
extending full width and depth. DO NOT install directly
on carpeting, vinyl, tile or any combustible material other
than wood.
WARNING! Risk of Fire! Prevent contact with vapor bar-
riers and sagging or loose insulation. See Section 5.B
“Placing Insulation in Framing” for exception to factory-
supplied insulation.
• Locate and install appliance to all clearance specications
in manual.
• The chase must be properly blocked to prevent blown
insulation or other combustibles from entering and
making contact with appliance.
• Failure to maintain airspace may cause overheating and
a re.
• Reference Figure 3.2, Figure 3.3, and Figure 3.4 for
clearance specications.
CLEARANCES TO COMBUSTIBLES:
A B C D E F G H I J K
Exterior
Rough
Opening
(Height)
Interior
Rough
Opening
(Height)
Rough
Opening
(Depth)
Rough
Opening
(Width)
Framing
for non-
combustible
material
Clearance
to Ceiling
(INTERIOR)
Clearance to Overhang
(EXTERIOR) Combustible
Floor
Combustible
Flooring
Stando󰀨
Height
Interior
Stando󰀨
Height
Exterior
Sides of
Appliance
Non-Vinyl Vinyl
Inches 47-5/8 47-5/8 23 44 46-1/8 35-3/4 35-5/16 64-5/16 0 0 9-1/2 9-1/2 1/2
mm 1210 1210 584 1118 1172 908 897 1634 0 0 241 241 13
Finishing Material Clearances
*TWI-MOD decorative barrier front barrier requires additional
clearance, See Section 8, Figure 8.3 for details.

14 Outdoor Lifestyles by Hearth & Home Technologies • TWILIGHT-IFT Installation Manual • 2668-970 Rev C • 3/21
Figure 4.1 Minimum Clearances for Termination
44 Termination Location and Vent Information
C
JB
D
B
F
B
A
E
FP
M
H or i
G
X
H
A
H
FP
FP
FP
FP
FP
FP
FP FP FP
X= AIR SUPPLY INLET
= AREA WHERE TERMINAL IS NOT PERMITTED
A. Vent Terminal Clearances
U.S.A. Installations: In accordance with the current ANSI Z223.1/NFPA 54, National Fuel Gas Code.
Canadian Installations: In accordance with the current CSA B149.1, Natural Gas and Propane Installation Code.
Electrical
Service
K
FP K
L
C
FP
FP
FP
U.S.A. CANADA
AClearance above grade,veranda, porch, deck, balcony or roof. 0 in. (0 mm) 0 in. (0 mm)
BClearance to window or door that may be opened, or to permanently closed window
U.S.A.: = 9 in. min. (229 mm min.) CANADA: = 12 in. min. (305 mm min.)
C
Clearance below unventilated so󰀩t 35-5/16 in. (897 mm) 35-5/16 in. (897 mm)
Clearance below ventilated so󰀩t 35-5/16 in. (897 mm) 35-5/16 in. (897 mm)
Clearance below any vinyl so󰀩ts and electrical service 64-5/16 in. (1.6 m) 64-5/16 in. (1.6 m)
D Clearance to outside corner 9 in. (229 mm) 9 in. (229 mm)
E Clearance to inside corner 12 in. (305 mm) 12 in. (305 mm)
FClearance to each side of center line extended above gas meter/regulator
assembly
Clearance in accordance
with local installation
codes and the require-
ments of the gas supplier.
3 ft (914 mm) within
a height 15 ft (4.5 m)
above the meter/regula-
tor assembly
G Clearance to gas service regulator vent outlet 3 ft (914 mm) 3 ft (914 mm)
HClearance to non-mechanical air supply inlet to building or the combustion
air inlet to any other appliance termination (mechanical or non-mechanical)
9 in. min.
(229 mm min.)
12 in. min.
(305 mm min.)
I
Clearance to a mechanical (powered) air supply inlet
***(All mechanical air intakes within 10 feet of a horizontal termination cap
must be a minimum of 3 feet below termination.)
3 ft (914 mm)*** 6 ft (1.8 m)
J
On public property: clearance above paved sidewalk or a paved driveway. 54 in. (1.3 m) 54 in. (1.3 m)**
**(A vent shall not terminate directly above a sidewalk or paved driveway which is located between two single family dwellings
and serves both dwellings.)
K
Clearance from sides of electrical service 6 in. (152 mm) 6 in. (152 mm)
Location of the vent termination must not interfere with access to the electrical service.
L
Clearance above electrical service 12 in. (305 mm) 12 in. (305 mm)
Location of the vent termination must not interfere with access to the electrical service.
M
Clearance under veranda, porch, deck, balcony or overhang
*(Permitted only if veranda, porch, deck, or balcony is fully open on a mini-
mum of two sides beneath the oor.)
36 in. (914 mm) 36 in. (914 mm)*
Vinyl or composite overhang 64-5/16 in. (1.6 m) 64-5/16 in. (1.6 m)
FP = FIREPLACE

15
Outdoor Lifestyles by Hearth & Home Technologies • TWILIGHT-IFT Installation Manual • 2668-970 Rev. C • 3/21
55 Appliance Preparation
Fire Risk.
• Prevent contact with sagging, loose
insulation.
• Do NOT install against vapor barriers or
exposed insulation.
B. Securing and Leveling the Appliance
Figure 5.1 Positioning the Metal Hearth Strip
METAL HEARTH STRIP
UNDER EDGE OF
APPLIANCE
APPLY HIGH TEMPERATURE SEALANT
(300 °F/149 °C min.)
BOTH SIDES
APPLIANCE
EXTERIOR
A. Removing Non-combustible Facing Ma-
terial Assembly
The non-combustible assembly is located on right-hand
side of appliance (when looking from outdoor side of
appliance).
1. Hold non-combustible pieces in place.
2. Remove and save two screws from upper bracket.
3. Remove non-combustible pieces.
4. Discard brackets.
5. Replace screws in holes where the bracket was at-
tached to appliance.
WARNING
NOTICE: Handle non-combustible pieces with care.
• Non-combustible pieces may chip or crack if dropped
or impacted.
• Avoid damaging protruding edges on outdoor side of
appliance.
Placing Insulation in Framing
Insulation material is shipped with this appliance. It is
packaged and placed on top of the appliance.
• Split the insulation material into four pieces.
• Place the insulation material on the top (two pieces) and
sides (one piece per side) of the appliance, between the
appliance and the framing studs. See Figure 5.2.
Placing Metal Hearth Strip
The metal hearth strip (approximately 46 inches x 2
inches) is used to provide added protection where appli-
ance and outer structure meet. See Figure 5.1.
• The metal hearth strip ashing may be bent or trimmed
to t rough opening width. Reference dimension “D” in
Figure 3.3.
• Place a generous bead of silicone caulk on the under-
side of the hearth strip, between the hearth strip and the
appliance, and into the corners of the hearth strip and
framing.
• Place the metal strip onto the structure where the outer
edge of the appliance will sit. It should overlap building
paper to prevent water inltration.
• Ensure the weep-hole slots in the outer oor of the appli-
ance are clear of any caulk, nishing materials or other
debris.

16 Outdoor Lifestyles by Hearth & Home Technologies • TWILIGHT-IFT Installation Manual • 2668-970 Rev C • 3/21
HEADER
FLASHING
(INSTALLED
CORRECTLY)
SCREW
LOCATIONS
SLIDE OUTDOOR FLASHING
DOWNWARD INTO POSITION
FIREPLACE
FLANGE
APPLY HIGH
TEMPERATURE
SILICONE SEALANT
TO CORNER EDGES
BEND IN
FLANGE
Figure 5.2 Proper Positioning, Leveling and Securing of
an Appliance
NOTE: The exterior side of the appliance can protrude
outward. It MUST NOT be recessed into the framing. Caulk
behind all anges before securing to the exterior.
Placing and Securing Appliance
Place the appliance into position. Make sure ashing edges
on the outdoor surround t up tight to the framing.
The diagram shows how to properly position, level, and
secure the appliance. See Figure 5.2. Nailing tabs are
provided to secure the appliance to the framing members.
• Caulk behind anges before securing to framing.
• Place the appliance into position.
• Level the appliance from side to side and front to back.
• Shim the appliance as necessary. It is acceptable to
use wood shims.
• Keep nailing tabs ush with the framing.
• Secure the appliance to the framing by using nails or
screws through the nailing tabs.
Placing Flashing and Sheathing
Apply high temperature silicone sealant to corner edges
of replace ange. See Figure 5.3.
Figure 5.3
Figure 5.4
Install outdoor header ashing. Place over upper portion
of shroud ange. Line up holes on shroud sides. See Fig-
ure 5.4.
Do NOT notch into the framing around the appliance spacers.
CAUTION
SECURE TO
FRAMING
SECURE TO
FRAMING IN A MINIMUM
3 PLACES PER SIDE
INSULATION
(SIDES)
INSULATION
(TOP)
Seal ashing to exterior of building using high tempera-
ture silicone sealant. Attach to building using holes pro-
vided on the top of the left and right sides of outdoor ash-
ing. See Figure 5.4.

17
Outdoor Lifestyles by Hearth & Home Technologies • TWILIGHT-IFT Installation Manual • 2668-970 Rev. C • 3/21
APPLIANCE
SURROUND
HOOD
TOP HOOD
TOP OF
APPLIANCE
16-5/16 in.
WALL STUD
HOUSEWRAP
INSULATION
HOUSEWRAP **
(BUILDING
PAPER) OVERLAP
FLASHING 1 in.
SHEATHING,
COMBUSTIBLE
FIREPLACE
HEADER
INSULATED
FRAMING
STANDOFF
NON-COMBUSTIBLE *
SHEATHING
10-7/8 in.
HEADER
FLASHING
Apply housewrap or building paper
For placement of combustible housewrap or building pa-
per and non-combustible sheathing for the exterior wall
see Figures 5.5 and 5.6.
Special care should be taken when choosing building
materials for weather proong (i.e. building wraps, seal-
ant tapes, liquid sealants, rubberized ashings, etc.).
All sealant materials or building wraps installed within 6
inches of the top and 1 inch on the sides of the replace
surround must be approved to a minimum temperature
of 225 ºF continuous exposure. Consult the material’s
manufacturer to ensure product compliance.
Figure 5.6
METAL FLASHINGTOP OF SURROUND
SIDE OF SURROUND
1 IN.
6 IN. 10-7/8 IN.
Figure 5.5. Exterior View without Non-combustible Sheathing Shown
* NOTE: All nishing materials on top of exterior sheathing
must be non-combustible for a minimum of 10-7/8 inches
above and 2-3/4 inches on both sides of the exterior face of
the appliance. This non-combustible nishing material can
be up to a maximum of 6 inches thick (6 inches maximum
horizontal overhang) to allow for brick and stone alcoves
(see Figure 5.5).
** NOTE: Combustible house wrap or building paper MUST
NOT extend over the outside of non-combustible sheath-
ing, and MAY extend over the ashing behind non-com-
bustible sheathing a maximum of 1 inch. Use high temp
silicone or sealant recommended by the manufacturer of
the housewrap to seal between combustible sheathing
house wrap and non-combustible sheathing. The sealant
material used within 6 inches of the top and 1 inch on the
sides of the replace surround must be approved to a
minimum temperature of 225 ºF continuous exposure.
Figure 5.7 Exterior Installation Prior to Finishing
Risk of Fire
• Non-combustible clearances must be main-
tained.
• Sheetrock, wood or other combustibles must
NOT be used as sheathing or facing in the non-
combustible zone.
• See Sections 3 and 8 for proper clearances.
• See Section 1 for combustible /non-combusti-
ble denitions.
Once the appliance is in place use enough high tempera-
ture silicone sealant or manufacturer specied sealant
(approved to a minimum of 225 ºF) to make a water tight
seal between outdoor surround and exterior sheathing.
Face the perimeter of the appliance with non-combustible
sheathing over shroud anges and ashing. See Figure
5.7 for non-combustible zone.
WARNING
10-7/8 in.
= NON-COMBUSTIBLE ZONE
2-3/4 in. 2-3/4 in.
= SHEATHING
= 1 INCH HOUSEWRAP OVERLAP
SHEATHING
NON-COMBUSTIBLE ZONE
FLASHING
= No House Wraps / Tapes in Shaded Area*
* All materials installed within 6 inches of the top and 1 inch
on the sides of the replace must be approved to a minimum
temperature of 225 °F continuous exposure.

18 Outdoor Lifestyles by Hearth & Home Technologies • TWILIGHT-IFT Installation Manual • 2668-970 Rev C • 3/21
C. Installing Non-combustible Facing Mate-
rial (Outdoor Side)
Figure 5.8 Attaching Non-combustible Facing Material
(Outdoor Side Only)
• Use a wet or dry towel or soft brush to remove dust or
dirt from facing material.
• Apply a non-combustible adhesive to attach tile, stone
or other non-combustible nishing materials per manu-
facturer’s instructions.
Figure 5.9 Complete Installation of Non-combustible
Facing Material (Outdoor Side)
Fire Risk.
• Follow these instructions exactly.
• Facing materials must be installed properly to
prevent re.
• No materials may be substituted
without authorization by Hearth & Home
Technologies.
WARNING
Apply fasteners from
fastener packet
in these areas.
47-5/8 in.
48-5/8 in.
NON-COMBUSTIBLE
FACING MATERIAL
• Center and attach two top boards (the two shorter pieces)
to the framing members. See Figure 5.8.
• Attach the left and right side pieces to the framing mem-
bers. See Figure 5.8.
• Use fasteners from fastener packet (in manual bag) in
areas noted in Figure 5.8.
• Use regular sheetrock screws to attach non-combustible
board to framing.

19
Outdoor Lifestyles by Hearth & Home Technologies • TWILIGHT-IFT Installation Manual • 2668-970 Rev. C • 3/21
66 Electrical Information
A. General Information
\WARNING! Risk of Shock! DO NOT wire 110-120 VAC
to the ignition module or to the appliance wall switch.
Incorrect wiring will damage controls.
NOTICE: This appliance must be electrically wired
and grounded in accordance with local codes or, in the
absence of local codes, with National Electric Code
ANSI/NFPA 70-latest edition or the Canadian Electric
Code CSA C22.1.
• Wire the appliance circuit using a minimum 14-2 AWG
with ground to unswitched 110-120 VAC. This is required
for proper operation of the appliance.
• A 110-120 VAC circuit for this product must be protected
with ground-fault circuit interrupter protection, in
compliance with the applicable electrical codes, when
it is installed in locations such as in bathrooms or near
sinks.
• Low voltage and 110-120 VAC voltage cannot be shared
within the same wall box.
• In some instances, the spark ignition of the appliance
may cause intermittent, non-damaging, interference
during the lighting sequence with a TV plugged into the
same circuit. It is recommended that the appliance
and TV use di󰀨erent circuits to mitigate the interference
potential. If interference is occurring on the same
circuit, the use of surge protectors may help alleviate
the interference.
Accessories Requirements
• This appliance may be used with a wall switch, wall
mounted thermostat and/or a remote control.
Wiring for optional Hearth & Home Technologies approved
accessories should be done now to avoid reconstruction.
Follow instructions that come with those accessories.
Figure 6.1 Junction Box Detail
Junction Box Wiring
If the box is being wired from the INSIDE of the appliance:
• Remove the screw attaching the junction box/receptacle
to the outer shell, rotate the junction box inward to dis-
engage it from the outer shell. See Figure 6.1.
• Pull the electrical wires from outside the appliance through
the opening into the valve compartment and secure wires
with a Romex connector. See Figure 6.1.
• Make all necessary wire connections to the junction box/
receptacle and reattach the junction box/receptacle to
the outer shell.
If the box is being wired from the OUTSIDE of the appli-
ance:
• Remove the screw attaching the cover plate from the
outside of the outershell. See gure 6.1
• Pull the electrical wires through the opening in the cover
plate and secure wires with a Romex connector. See
Figure 6.1.
• Make all necessary wire connections to the junction box/
receptacle and reattach the cover plate to the outer shell
of the appliance.
Electrical Service and Repair
WARNING! Risk of Shock! Label all wires prior to dis-
connection when servicing controls. Wiring errors could
cause improper and dangerous operation. Verify proper
operation after servicing.
WARNING! Risk of Shock! Replace damaged wire with
type 105º C rated wire. Wire must have high temperature
insulation.
WHT
BLK
BLK
WHT
GRN wire
inside box
Copper
ground attached
to GRN screw with
GRN wire
14-2 AWG
Romex
Connector
Cover Plate
outside firebox
NOTICE: DO NOT wire
110-120 VAC to wall switch.

20 Outdoor Lifestyles by Hearth & Home Technologies • TWILIGHT-IFT Installation Manual • 2668-970 Rev C • 3/21
Figure 6.2 Electrical Component Tray
WIRE HARNESS
IFT-ECM IFT-ECM
POWER SUPPLY
BATTERY PACK
WIRE
RETAINERS (4)
Component Tray
The electrical components are installed on the compo-
nent tray. If it becomes necessary to remove the compo-
nents, use the information in Figure 6.2 to remove them
and reinstall them correctly on the component tray.
The IFT-ECM is held in position by two placement tabs
(front and rear) and one plastic pin on the component
tray. To remove the IFT-ECM, bend the rear placement
tab back slightly and tip the IFT-ECM to disengage it from
the pin and the shorter placement tab. To reinstall the
IFT-ECM on the component tray, engage the front place-
ment tab rst.
The IFT-ACM (if equipped) is attached to the IFT-ECM and
is held in position by the rear placement tab. To remove
the IFT-ACM, bend the rear placement tab back slightly
and disengage the IFT-ACM from the IFT-ECM.