HearthStone BI-48-ST, BI-48-SSR, BI-60-SSL, BI-60-SSR, BI-72-SSL Owner's Manual

Do not store or use gasoline or other flammable 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 fire

department or 911.

A qualified installer, service agency, or gas supplier must

perform installation and service of this appliance. In the
Commonwealth of Massachusetts, all installation of gas
lines and gas fittings must be performed by a licensed
gas fitter or licensed plumber.

Ce manual est disponible en Francais a

www.hearthstonetech.com

Report #0361GF006S

WARNING: This product can expose you to
chemicals including glass wool fiber and carbon
monoxide which are known to the State of California to
cause cancer, birth defects or other reproductive harm.
For more information go to www.P65Warnings.ca.gov

California Prop 65

CELESTE/GEMINI 48/60/72

Series 8930, 8935, 8940, 8945, 8950, and 8955

BUILT-IN DIRECE VENT GAS FIREPLACES

OEM Models# BI-48-ST, BI60-ST, BI-72-ST, BI-48-SSL

BI-48-SSR, BI-60-SSL, BI-60-SSR, BI-72-SSL, BI-72-SSR

Owner's Manual

Installation & Operating

Instructions

Read This Manual in Its Entirety

Operate and Maintain This Gas Heater

According to This Instruction Manual.

SAVE THESE INSTRUCTIONS

Hearthstone Quality Home Heating Products, Inc. ®

CELESTE/GEMINI 8930/8935/8940/8945/8950/8955

Manual: 6400-40404

R: 08/30/18

Hearthstone Quality Home Heating Products, Inc CELESTE/GEMINI 48/60/72 Models 8930/8935/8940/8945/8950/8955

INDEX

IMPORTANT SAFETY INFORMATION.................................................................... 4

MODEL LIST.............................................................................................................. 6

SPECIFICATIONS...................................................................................................... 8

CLEARANCES........................................................................................................... 10

INSTALLATION INFORMATION................................................................................ 13

VENTING.................................................................................................................... 15

FINAL ASSEMBLY..................................................................................................... 21

LIGHTING & OPERATION......................................................................................... 24

GAS CONVERSION................................................................................................... 33

MAINTENANCE LOG FORMS...................................................................................37

INSTALLATION RECORD..........................................................................................38

CONTROL SYSTEM SCHEMATIC............................................................................ 40

TROUBLESHOOTING................................................................................................ 41

WARRANTY INFORMATION..................................................................................... 43

WE STRONGLY SUGGEST THAT YOU READ THIS MANUAL THOROUGHLY BEFORE
BEGININNG THE INSTALLATION OF THE CELESTE AND GEMINI PRODUCT LINES.
ALTHOUGH THE BASIC REQUIREMENTS FOR THE INSTALLATION OF ALL DIRECT VENT
GAS FIREPLACES ARE SIMILAR, EACH SPECIFIC PRODUCT HAS ITS OWN UNIQUE SET-UP
AND INSTALLATION REQUIREMENTS THAT MUST BE FOLLOWED EXACTLY. PLAN YOUR
INSTALLATION IN ADVANCE BY CAREFULLY REVIEWING ALL THE INFORMATION
CONTAINED IN THIS MANUAL.

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Hearthstone Quality Home Heating Products, Inc CELESTE/GEMINI 48/60/72 Models 8930/8935/8940/8945/8950/8955

POÊLE AU GAZ À VENTILATION DIRECTE

Manuel de l'Utilisateur

Lire ce Manuel en Entier

Utiliser et Entretenir ce Poêle au Gaz

selon ce Manuel d'Instructions

CONSERVER CES INSTRUCTIONS!

Ne pas entreposer ni utiliser d’essence ni d’autre

vaperurs ou liquides inflammables dans le
voisinage de cet appareil ou de tout autre
appareil.

QUE FAIRE SI VOUS SENTEZ UNE ODEUR

DE GAZ:

 Ne pas tenter d’allumer d’appareil.
 Ne touchez à aucun interrupteur. Ne pas

vous servir des téléphones se trouvant dans
le batiment où vous vous trouvez.

 Quittez le bâtiment immédiatement.
 Appelez immédiatement votre fournisseur de

gaz depuis un voisin. Suivez les instructions
du fournisseur.

 Si vous ne pouvez rejoindre le fournisseur

de gaz, appelez le service des incendies

L’installation et l’entretien doivent être assurés

par un installateur ou un service d’entretien

qualifié ou par le fournisseur de gaz.

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Hearthstone Quality Home Heating Products, Inc CELESTE/GEMINI 48/60/72 Models 8930/8935/8940/8945/8950/8955

IMPORTANT SAFETY INFORMATION

The installation must conform with local codes or, in the absence of local codes, with the National Fuel Gas
Code, ANSI Z223.1/NFPA 54, or the Natural Gas and Propane Installation Code, CSA B149.1.

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/BCSBCS A225.1, or Standard for Gas Equipped
Recreational Vehicles and Mobile Housing, CSA Z240.4.

The appliance and its appliance main gas 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 psi (3.5 kPa).

The appliance must be isolated from the gas supply piping system by closing its equipment shutoff valve during
any pressure testing of the gas supply piping system at test pressures equal to or less than 1/2 psi (3.5 kPa).

The installation must provide for adequate ventilation air to the appliance.
This gas appliance must not be connected to a chimney flue serving a separate solid-fuel burning appliance.
The appliance, when installed, must be electrically grounded in accordance with local codes, or, in the absence

of local codes, with the National Electrical Code ANSI/NFPA 70, or the Canadian Electrical Code, CSA C22. 1.
The appliance area must be kept clear and free from combustible materials, gasoline and other flammable

vapors and liquids.
The flow of combustion and ventilation air must not be obstructed. Adequate accessibility clearances must be

maintained for servicing and proper operation of this appliance.
Do not use this appliance if any part has been under water. Immediately call a qualified service technician to

inspect the appliance and to replace any part of the control system and any gas control which has been under
water.

Due to high temperatures, the appliance should be located out of traffic and away from furniture and
draperies.

Children and adults should be alerted to the hazards 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 susceptible to accidental contact burns. A physical barrier
is recommended if there are at-risk individuals in the house. To restrict access to a fireplace 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.

A barrier designed to reduce the risk of burns from the hot viewing glass is provided with this appliance
and shall be installed for the protection of children and other at-risk individuals.

If the barrier becomes damaged, the barrier shall be replaced with the manufacturer’s barrier for this
appliance.

Clothing or other flammable material should not be placed on or near the appliance.
Any screen or guard removed for servicing an appliance must be replaced prior to operating the

appliance.

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Hearthstone Quality Home Heating Products, Inc CELESTE/GEMINI 48/60/72 Models 8930/8935/8940/8945/8950/8955

Installation and repair should be done by a qualified service person. The appliance should be inspected
before use and at least annually by a professional service person. More frequent cleaning may be
required due to excessive lint from carpeting, bedding material, etc. It is imperative that the control
compartments, burners and circulating air passageways of the appliance be kept clean.

WARNING: Do not operate the appliance with the glass door assembly removed, or if the glass is cracked
or broken. Replacement of the glass should be done by a qualified service person.

WARNING: Use only glass assembly, P/N 48-510 which includes the glass panel, frame and gasket. Do not
use substitute materials. Do not strike or slam the glass front. Do not use abrasive cleaners. Do not clean
when hot.

CAUTION: DO NOT OPERATE WITH BROKEN GLASS

Installation and repair should be done by a qualified service person. The appliance should be inspected before
use and at least annually by a professional service person. More frequent cleaning may be required due to
excessive lint from carpeting, bedding material, etc. It is imperative that the control compartment, burners and
circulating air passageways of the appliance be kept clean.

Note:

Periodically conduct a visual check
to ensure the pilot and burner flames
are as shown (right).

Vent Installation Note:

When the first piece of direct vent
pipe is attached to the starter collar of
the fireplace, be sure to inspect both
the inside and outside joints to ensure
a secure fit with no air gaps. Once it is
confirmed there are no gaps, rotate
the pipe clockwise to lock it in place.

Follow the vent manufacture’s

installation instructions during vent
pipe installation.

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Hearthstone Quality Home Heating Products, Inc CELESTE/GEMINI 48/60/72 Models 8930/8935/8940/8945/8950/8955

CELESTE 48 – SINGLE SIDE FIREPLACE

Right side vent exit
Model# 8935-0000R

CELESTE 48 – SINGLE SIDE FIREPLACE

Left side vent exit
Model# 8935-0000L

GEMINI 48 – SEE-THRU FIREPLACE

Model# 8930-0000

CELESTE 60 – SINGLE SIDE FIREPLACE

Right side vent exit
Model# 8945-0000R

CELESTE 60 – SINGLE SIDE FIREPLACE

Left side vent exit
Model# 8945-0000L

GEMINI 60 – SEE-THRU FIREPLACE

Model# 8940-0000

CELESTE 72 – SINGLE SIDE FIREPLACE

Right side vent exit
Model# 8955-0000R

CELESTE 72 – SINGLE SIDE FIREPLACE

Left side vent exit
Model# 8955-0000L

GEMINI 72 – SEE-THRU FIREPLACE

Model# 8950-0000

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Hearthstone Quality Home Heating Products, Inc CELESTE/GEMINI 48/60/72 Models 8930/8935/8940/8945/8950/8955

CERTIFICATION

This appliance has been certified by OMNI-Test Laboratories, Inc. to ANSI Z21.88-2014/CSA 2.33-2014 Vented Gas
Fireplace Heaters and CAN/CGA-2.17-M91 (R2014), Gas-Fired Appliances for Use At High Altitudes.

This AURORA Gas Fireplace is approved for installation at elevations up to 2000 feet in the U.S. and 1370 meters
(4500 feet) in Canada without change. If your installation is at an elevation greater than these, consult with the
local authority having jurisdiction for gas product installations to determine their specific requirements for high
altitude installations.

These appliances are approved for installation in the Commonwealth of Massachusetts by the Board of State
Examiners of Plumbers and Gas Fitters.

Sample Rating Label (affixed to control panel within firebox)

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Hearthstone Quality Home Heating Products, Inc CELESTE/GEMINI 48/60/72 Models 8930/8935/8940/8945/8950/8955

NATURAL GAS SPECIFICATION CHART

INPUT

CELESTE/GEMINI 48

CELESTE/GEMINI 60

CELESTE/GEMINI 72

Input Rating BTU/Hr.

26,000

30,000

34,000

Min. Input BTU/Hr.

16,000

21,000

27,000

Orifice Size - DMS

#42

#49

#46

GAS SUPPLY

CELESTE/GEMINI 48

CELESTE/GEMINI 60

CELESTE/GEMINI 72

Manifold Pressure

3.5” w.c. / 0.9kPa

3.5” w.c. / 0.9kPa

3.5” w.c. / 0.9kPa

Min. Supply Pressure

5.5” w.c. / 1.4kPa

5.5” w.c. / 1.4kPa

5.5” w.c. / 1.4kPa

Max. Supply Pressure

10.0” w.c. / 2.5kPa

10.0” w.c. / 2.5kPa

10.0” w.c. / 2.5kPa

PROPANE (LP) SPECIFICATION CHART

INPUT

CELESTE/GEMINI 48

CELESTE/GEMINI 60

CELESTE/GEMINI 72

Input Rating BTU/Hr.

30,000

34,000

40,000

Min. Input BTU/Hr.

19,000

25,000

28,000

Orifice Size – DMS

#52

#56

#55

GAS SUPPLY

CELESTE/GEMINI 48

CELESTE/GEMINI 60

CELESTE/GEMINI 72

Manifold Pressure

10.0” w.c. / 2.5kPa

10.0” w.c. / 2.5kPa

10.0” w.c. / 2.5kPa

Min. Supply Pressure

11.0” w.c. / 2.8kPa

11.0” w.c. / 2.8kPa

11.0” w.c. / 2.8kPa

Max. Supply Pressure

13.0” w.c. / 3.3kPa

13.0” w.c. / 3.3kPa

13.0” w.c. / 3.3kPa

Efficiency NG/LP

CEL/GEM 48

CEL/GEM 60

CEL/GEM 72

*Typical Installation, Steady State Efficiency - %

62.2/68.4

69/73.9

72.6/76.4

Steady State Efficiency - %

61/63.4

64.8/70.8

70.4/74.8

Annual Fuel Utilization Efficiency (AFUE) - %

59/61.4

62.8/68.6

68.2/72.5

Canadian p.4 Efficiency - %

65.7/62

64.5/67.7

69.8/72.7

SPECIFICATIONS

*Your efficiency will increase with the length of the vent run. The typical installation tested is 5ft vertical and 5ft horizontal.

NOTE: The maximum achievable steady state efficiency can vary depending on how the fireplace is
installed and operated.

 It is recommended that the pilot flame be turned off if the appliance will not be in use for an extended

period of time.

 This appliance is equipped for use with the fuel type indicated on the rating plate. Field conversion is

only permitted with a conversion kit supplied by Hearthstone.

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Hearthstone Quality Home Heating Products, Inc CELESTE/GEMINI 48/60/72 Models 8930/8935/8940/8945/8950/8955

SPECIFICATIONS

*The Horizontal and Vertical vent centerline dimensions’ account for the use of a 45-degree elbow.

The gas fireplace is shipped with a 3/8” tube OD (female) connection. The gas supply piping should have a
separate gas shutoff valve and a 1/8” NPT plugged tapping upstream of the valve. The stove and its main

control 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 psi (3.5 kPa). The stove must be isolated from the gas supply
piping system by closing the main control valve during any pressure testing of the gas supply system at test
pressures equal to or greater than 1/2 psi (3.5 kPa). After the gas supply has been connected, use a
commercial gas leak detector or apply a soapy water solution to all the fittings to check for gas leaks. Never
use a flame to test for leaks.

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Hearthstone Quality Home Heating Products, Inc CELESTE/GEMINI 48/60/72 Models 8930/8935/8940/8945/8950/8955

MINIMUM CLEARANCES TO COMBUSTIBLE CONSTRUCTION

GEMINI/CELESTE 48

GEMINI/CELESTE 60

GEMINI/CELESTE 72

Sides

4” (102mm)

4” (102mm)

4” (102mm)

Floor

1/2” (13mm)

1/2” (13mm)

1/2” (13mm)

Back (Single Sided)

2” (51mm)

2” (51mm)

2” (51mm)

Back (See-Thru)

12” (305mm)

12” (305mm)

12” (305mm)

Front

12” (305mm)

12” (305mm)

12” (305mm)

Clearance around vent pipe

1.5” (38mm)

1.5” (38mm)

1.5” (38mm)

CLEARANCES

The image above shows a typical installation.

 All framing, finishing, and construction materials that fall within 4” (102mm) of either the sides or top of

the fireplace must be non-combustible and ½” below the unit.

 Any materials that cover the front face or rear face of the fireplace must be non-combustible. Allow

clearance for removal of fireplace trim, screen, and glass.

 The fireplace must be secured to the framing studs using the nailing flanges as shown above. Use 2

screws or nails per nailing flange to secure the fireplace.

 The sheet metal face of this fireplace must be covered by a non-combustible material, it may not be left

exposed.

 The floor the fireplace immediately rests on must be constructed of non-combustible material with an R

factor of at least .37, with a minimum thickness of ½” (13mm).

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Hearthstone Quality Home Heating Products, Inc CELESTE/GEMINI 48/60/72 Models 8930/8935/8940/8945/8950/8955

FRAMING BEFORE INSTALLATION

Sometimes it is necessary to frame the location you will be installing the fireplace before the fireplace is onsite,
the above image shows an example of how to frame the wall before the fireplace is moved into position.

 All framing, finishing, and construction materials that fall within 4” (102mm) of either the sides or top of

the fireplace must be non-combustible. (shown with a dashed line in the image above)

 Note that the vent starter collar sits slightly above the top surface of the fireplace can, there must be

clearance to allow the fireplace with starter collar to slide into place.

 The floor the fireplace immediately rests on must be constructed of non-combustible material with an R

factor of at least .37, with a minimum thickness of ½” (13mm).

 This framing guide is just an example of the many ways in which a AURORA Fireplace can be installed.

You may need to customize this framing design to allow for things such as doors, windows, countertops,
structural frame members or local code requirements.

 Dimension “B” for your model can be found on page .

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Hearthstone Quality Home Heating Products, Inc CELESTE/GEMINI 48/60/72 Models 8930/8935/8940/8945/8950/8955

Room Volume for Vent Free

WARNING
Follow these instructions carefully to ensure safe installation. Failure to follow instructions exactly

can create a fire hazard.

 The combustible area above the facing must not protrude more than ¾ (19mm) from the facing; if it

does, it is considered a mantel and must meet the mantel requirements on the following page.

 When selecting non-combustible materials for use in the installation, take note of the material’s

propensity to absorb and conduct heat. Materials such as metal, stone, and ceramics may transmit heat
more readily than other building materials.

 Only non-combustible materials (i.e. brick, tile, slate, steel, or other man made materials with a UL fire

rating of Zero) may be used in the construction and installation of this fireplace. Any material must be
fastened to surrounding framing. NOT to the face of the fireplace.

ATTENTION:
Before proceeding with your installation, determine if you plan to use either the Power Vent kit (99-

65350 horizontal or 99-653352 vertical) or the Heat Redistribution Kit (99-57350). Read the manual for
these optional components before proceeding with your installation, as your installation
requirements and procedure may change.

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Hearthstone Quality Home Heating Products, Inc CELESTE/GEMINI 48/60/72 Models 8930/8935/8940/8945/8950/8955

INSTALLATION INFORMATION

WARNING
Read all instructions completely and thoroughly before attempting installation. Failure to do so could

result in serious injury, property damage, or loss of life. Operation of improperly installed or
maintained venting system could result in serious injury, property damage, or loss of life.

NOTE: Any electrical wiring, gas plumbing, or vent installation required by the appliance must be
done prior to final finishing. The unit shall be test burned on high for at least 30 minutes prior to final
finishing to confirm proper operation. Failure to test the appliance before final finishing may require
significant and costly reconstruction

INSTALLATION PRECAUTIONS:

Consult local building codes before beginning the installation. The installer must make sure to select the proper
vent system for installation. Before installing the vent kit, the installer must read this fireplace manual and vent
kit instructions. Only a qualified, licensed, installer/service person shall install the venting system. The installer
must follow the following safety rules:

 Wear gloves and safety glasses for protection.
 Use extreme caution when using ladders or when on rooftops.
 Be aware of electrical wiring locations in walls and ceilings.

The following actions will void the warranty on your fireplace:

 Installation of any damaged venting component.
 Unauthorized modification of the venting system.
 Installation of any component part not manufactured or approved by Hearthstone.
 Installation other than permitted by these instructions.

NOTICE: Failure to follow these instructions will void the warranty.

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Hearthstone Quality Home Heating Products, Inc CELESTE/GEMINI 48/60/72 Models 8930/8935/8940/8945/8950/8955

State of Massachusetts:
The installation must be completed by a licensed plumber or gas fitter in the Commonwealth of

Massachusetts.

REQUIREMENTS FOR THE COMMONWEALTH OF MASSACHUSETTS
This product must be installed by a licensed plumber or gas fitter when installed within the

Commonwealth of Massachusetts. If this appliance is installed in a dwelling, building or structure
used in whole or in part for residential purposes and the installation includes a horizontal vent
termination that is less than seven (7) feet above the finished grade in the area of the venting,
including but not limited to decks and porches, a hard-wired carbon monoxide detector with an
alarm and battery back-up must be installed on the floor level of the dwelling, building or structure
where the appliance is to be installed.

Additionally, a hard-wired or battery operated carbon monoxide detector with an alarm must be in­stalled on each additional level of the dwelling, building or structure served by the appliance. It
shall be the responsibility of the property owner to secure the services of qualified licensed
professionals for the installation of hard-wired carbon monoxide detectors.

In the event that the horizontally vented appliance is installed in a crawl space or attic, the hard­wired carbon monoxide detector with alarm and battery back-up may be installed on the next
adjacent floor level.

In the event that this requirement cannot be met at the time of completion of the installation of the
appliance, the owner shall have a period of thirty (30) days to comply with the requirement.
However, during said thirty (30) day period, a battery operated carbon monoxide detector with
alarm must be installed.

Each carbon monoxide detector as required in accordance with the above provisions must comply
with NFPA 720 and be ANSI/UL 2034 and IAS certified.

In addition, when the vent termination is less than seven (7) feet above finished grade a metal or
plastic identification plate must 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. 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”.

A COPY OF THESE INSTRUCTIONS PLUS ALL VENTING INSTRUCTIONS WHICH IN-CLUDE
PARTS LISTS, AND/OR ALL VENTING DESIGN INSTRUCTIONS MUST REMAIN WITH THE
STOVE AT THE COMPLETION OF THE INSTALLATION.

ATTENTION INSTALLERS: Mark below which venting system was used in the installation. These
instructions must remain with the AURORA Gas Fireplace Installation & Operation Manual.

O Simpson DuraVent GS/PRO® O Selkirk Direct-Temp® O Security Secure Vent™
O AmeriVent Direct™ O Metal Fab Direct Vent O ICC Direct Vent

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