Escea ST900 User manual

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ST900 Direct Vent Gas Fireplace
Installation Manual
NORTH AMERICA EDITION
Manufactured By: Escea Ltd, 17 Carnforth Street, Green Island, Dunedin 9018, NZ. Ph: [phone]
For distribution details see: www.esceasales.com
-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.
Immediately call your gas supplier from a
neighbors phone. Follow the gas suppliers
instructions.
If you cannot reach your gas supplier, call
the fire department.
-Installation and service must be performed by a
qualified installer, service agency, or the gas
supplier.
WARNING: FAILURE TO INSTALL THIS
APPLIANCE CORRECTLY WILL VOID
YOUR WARRANTY AND MAY CAUSE A
SERIOUS HOUSE FIRE.
This appliance may be installed as an OEM
installation in a 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, in Canada.
This appliance is only for use with the types
of gas indicated on the rating plate. A
conversion kit is supplied with the
appliance.
This appliance may be installed in an
aftermarket, permanently located,
manufactured home (USA only) or mobile
home, where not prohibited by local codes.
This appliance is only for use with the types
of gas indicated on the rating plate. A
conversion kit is supplied with the
appliance.
INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.
Ce manual est disponsible en Français sur demande.
www.escea.com

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Important:
The appliance shall be installed in accordance with;
• This installation instruction booklet
• 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/NCSBCS A225.1, or Standard for Gas Equipped Recreational Vehicles and Mobile Housing,
CSA Z240.4
• Any other relevant statutory regulations.
• Must be installed by a qualified installer, service agency or gas supplier
• Converting this appliance for use with other gasses must be done by a qualified installer, service
agency, or gas supplier
Warning:
-The area around the ST900 MUST be kept clear and free from combustible materials, gasoline and
other flammable vapors and liquids.
-Any safety screen or guard removed for servicing the ST900 must be replaced prior to operating it.
-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.
-Caution: Label all wires prior to disconnection when servicing controls. Wiring errors can cause
improper and dangerous operation.
-Verify proper operation after servicing.
DUE TO HIGH TEMPERATURES, THE APPLIANCE
SHOULD BE LOCATED OUT OF TRAFFIC AND
AWAY FROM FURNITURE AND DRAPERIES.
INSTALLATION AND REPAIR SHOULD BE DONE
BY AN AUTHORIZED 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 CONTROL
COMPARTMENTS, BURNERS AND CIRCULATING
AIR PASSAGEWAYS OF THE APPLIANCE BE KEPT
CLEAN.
CHILDREN AND ADULTS SHOULD BE ALERTED
TO THE HAZARDS OF HIGH SURFACE
TEMPERATURES, ESPECIALLY THE FIREPLACE
GLASS, AND SHOULD STAY AWAY TO AVOID
BURNS OR CLOTHING IGNITION.
YOUNG CHILDREN SHOULD BE CAREFULLY
SUPERVISED WHEN THEY ARE IN THE SAME
AREA AS THE APPLIANCE. TODDLERS, YOUNG
CHILDREN AND OTHERS MAY BE SUSCEPTIBLE
TO ACCIDENTAL CONTACT BURNS. A PHYSICAL
BARRIERS IS RECOMMENDED IF THERE ARE AT
RISK INDIVIDUAL 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.
CLOTHING OR OTHER FLAMMABLE MATERIAL
SHOULD NOT BE PLACED ON OR NEAR THE
APPLIANCE.

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PRODUCT SPECIFICATION
MODEL NAME
ST900
Description of Appliance
Decorative Gas Fire
Approved to:
221:88:2014
Gas Type
Natural
Propane
Gas input
High
19500 BTU/h (20.6 MJ/h)
16000 BTU/h (16.9 MJ/h)
Low
12500 BTU/h (13.2 MJ/h)
14600 BTU/h (15.40 MJ)
Inlet Pressure
Maximum
10.0 inch WC (2.5 kPa)
13.0 inch WC (3.25 kPa)
Minimum
5.5 inch WC (1.37 kPa)
11.0 inch WC (2.75 kPa)
Operating Pressure
High
4.0 inch WC (1.0 kPa)
9.4 inch WC (2.34 kPa)
Low
2.1 inch WC (0.52kPa)
4.8 inch WC (1.20kPa)
Injector Size
Ø1.9mm
1.2mm
Pilot injector
#37
#23
Appliance Dimensions
(mm)
Width
35 ½" (902.4 mm)
Height
21 ½" (546.0 mm)
Depth
13 ¾" (352.2 mm)
Weight
lbs (kg)
100 lbs (45 kg)
Ignition System
Electronic Ignition to pilot system
(Maxitrol GV60)
Ignition Activation
10 secs (approx)
Flame Safeguard
Thermocouple –magnetic cartridge
Electrical Supply
6.0 V DC
Consumption
2.3W @ 0.02A 110V
Remote controls
Yes
Timers
Yes
Clock
Yes
Function lock / child
Yes
Temperature control
Yes
Connections
Electric
6.0 V DC transformer and/or 4 x AA Cells
Gas
½ “ NPT Male lower left of fireplace
Flue Type
Simpson Duravent (Balanced)
Flue Size
8"/205 mm Outer, 6"/125 mm Inner
Spigot
Location
Rear and centre at 60° to vertical
Data badge location
Lower left of fireplace

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Note:
THERE ARE A FEW THINGS TO CONSIDER BEFORE INSTALLATION
• Cavity Dimensions and Clearances
• MUST be installed a minimum of 4” above the floor or nearest horizontal surface.
• Coupling of flue to fireplace
• Gas pipe placement to the front left of the cavity.
• Coupling of gas lines to fireplace
• Fixing the fireplace to cavity
• Before installation, ensure that the local distribution conditions (identification of the type
of gas and pressure) and the adjustment of the appliance are compatible.
• A list of replacement parts is in Appendix D at the end of this Installation Manual
The sequence in which you choose to do these tasks will vary depending on your individual
scenario. Please read these instructions fully before proceeding with the installation.
Leave the installation of the fascia panels until the very end of the installation and
commissioning to avoid damage to the fascia panels.
Recommended Installation Process:
The following diagram illustrates the steps required to install your gas fireplace, and the trades
required at each stage.
Builder
1. Construct Frame (Section 1.0 to 6.0)
Gasfitter
4. Install Flue + Flue Restrictor if required (Section 12.0 to 13.0)
5. Test fireplace and verify flame pattern is acceptable
6. Cover-up fireplace using packaging (Section 18.0)
Gasfitter
2. Install Gas Pipe (Section 7.0 to 8.0)
3. Install Fireplace (Section 9.0 to 11.0)
Ensure that you leave a gap between the studwork and fire
chassis to accept the wall lining if applicable.
Builder
7. Dry wall / clad chimney breast
Gasfitter
8. Commission the Gas Fireplace (Section 19.0)

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Contents:
1.0 Product Description
2.0 Creating the Cavity
3.0 Hearth and Floor Clearances
4.0 Wall Linings
5.0 Vertical Clearances
6.0 Corner Installations
7.0 Laying Gas Pipe
8.0 Connecting Gas Pipe
9.0 Power Supply
10.0 Fixing Fireplace to Wall
11.0 Removing the Firebox Glass
12.0 Installing the Flue system
13.0 Fitting the Flue restrictor
14.0 Converting to Propane Gas
15.0 Changing Operating Pressure to Propane
16.0 Placing the Fuel Bed
17.0 Re-fitting the Glass Assembly
18.0 Covering up the Fireplace
19.0 Commissioning the Fireplace (Including fitting the fascia)
20.0 Remote Instructions
21.0 Sounds and Smells
22.0 Annual Service Check
23.0 Installation Check List
24.0 Appendix
25.0 Warranty Terms and Conditions

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1.0 Product Description:
The Escea ST900 decorative gas fireplace is designed to be built into a cavity. The
appliance is flued via Simpson Duravent Direct Vent Pro 5” x 8” Flue, or compatible
equivalent. The user will control their fireplace with the Radio Frequency (RF) remote. The
glass on the front of the appliance is considered a working surface, and as such care
should be taken not to touch this while the appliance is running as it will get hot.
WARNING:
Failure to follow these instructions could cause a malfunction of the fireplace, which,
could result in death, serious bodily injury, and/or property damage. Failure to follow
these instructions may also void insurance cover and/or product warranty.
Installation:
Installation must be carried out by a registered installer who, on completion of the
installation, must issue a certificate of compliance, in accordance with national and/or local
codes. If a certificate of compliance is not issued then the Escea warranty may be void.
Warranty Repair and Annual Servicing:
Warranty repair work must be carried out by a recognised Escea gas fireplace service
agency. It is recommended that recognised Escea Gas fireplace service agencies are also
used to carry out annual servicing requirements (particularly during the warranty period).
For contact details of authorised Escea service agencies in your area, please contact the
retailer from whom the appliance was purchased.
This product must be installed according to these instructions and in compliance with all
relevant building, gas fitting and other statutory regulations (eg. ANSI Z223.1/NFPA 54). Any
shortcomings in the appliance and flue installation will be the responsibility of the installer,
and Escea will not be accountable for any such failings or their consequences.
35 ”
2
1
17 ”
16
13
17 ”
16
13
13 ”
16
15
2 ”
16
7
22 ”
16
13
44 ”
16
7
15 ”
16
5
21 ”
2
1
13 ”
4
3

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2.0 Creating the Cavity:
The dimensioned drawing below shows the size of opening that must be created to fit the
ST900. The wall directly above the fireplace should be finished / clad / lined after the
fireplace has been installed, unless there is an access hatch or the chase is open to the
ceiling cavity, which allows the flue to be installed after the wall has been lined.
See Appendix C at the back of this installation manual for clearances to combustible materials.
If the ST900 is installed directly on carpeting, tile or other combustible material other than
wood flooring, the appliance shall be installed on a metal or wood panel extending the full
width and depth of the appliance.
Note: It is not necessary to
line or vent the cavity,
and it may be constructed
with timber.
3.0 Hearth and Floor Clearances:
There must be at least 4” clearance between the bottom of the ST900 fireplace and any
horizontal surface below, for example hearths and floors.
3.1Wall and Cabinet Clearances:
There must be a minimum of 4” clearance from the sides of the fascia to any protruding
side walls or cabinetry.
4.0 Wall Linings:
The wall board that lines the outside of this opening can be normal dry wall
(Plaster Board) and does not need to be non-combustible providing that it does not come
any closer to the fireplace than the dimensions shown in section 2.0. Note: The
temperature of the wall lining directly above the fireplace does get warm and hence may
discolour paint finishes that are susceptible to temperature damage or distort vinyl wall
coverings.
H
W
D
Ferro
21 7/8”
35 7/8”
15”
Ferro Fascia
The wall and framework in front of the
flue must not exceed 4” in thickness, this
includes dry wall or any other wall
linings. This is to ensure there is at least
1” gap between all flueing components
and any combustible material.

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2”
2”
2”
20”
4”
4”
2”
2”
2”
2”
Mantle Mantle
Recessed TV Flush TV with
small mantle Mantle above fire Protruding fire
20” 20”
20”
5.0 Television Positioning Considerations:
It is becoming common practice for consumers to mount flat screen TV’s above their gas
fireplace.
Most TV manufacturers have specified in their instructions that the TV should not be
installed on, near or above a heat source. For this reason TV location decisions rest solely
with the householder and Escea will not be held liable for any adverse affects on a TV
located near to an Escea fireplace that may be caused by heat.
The drawings below are suggestions that may be used as a GUIDE for those consumers
who do decide to locate their TV above an ST900 gas fireplace. These drawings show
ways to reduce the amount of warm air rising off the fireplace and onto the TV.
The material that the wall and mantle are made from will also affect the operating
temperature of the TV so it is the customers responsibility to satisfy themselves that their
TV mounting and mantle design will not exceed the listed
maximum operating temperature of their electronic goods.
5.1 Combustible Mantle Clearances:
The diagram to the right shows the minimum and
maximum allowable size for mantles or protruding
surfaces mounted above the ST900.
Note: Escea does not recommend placement of items on the
mantles shown in the diagram to the right. This is because of
the potential for items placed on or above the mantle to be
affected by the heat rising from the appliance.

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5.2 Non-Combustible Mantle Clearances:
If the entire installation (mantle, wall and cavity) is
constructed from non-combustible materials, the
clearances to mantles may be as shown in the shaded
area.
6.0 Corner Installations:
If a cavity is to be created in a corner,
the following drawing gives the minimum
sizes.
7.0 Laying Gas Pipe:
Gas pipe should be sized as per the requirements of relevant local or national codes. The
pipe sizing must be sufficient to deliver the following volume of gas to the fireplace with all
other gas appliances in the home running at the same time;
ST900 = 19,500 BTU/h max on Natural Gas
High Altitude Installations
When installing this appliance at an elevation above 2000 feet, it may be necessary to decrease the input rating by
changing the existing burner orifice to a smaller size. Input rate should be reduced by 4% for each 1000 feet above a
2000 foot elevation in the U.S.A, or 10% for elevations between 2000 and 4500 feet in Canada. If the heating value
of the gas has ben reduced, these rules do not apply. To identify the proper orifice size, check with the local gas
utility.
If installing this appliance at an elevation above 4500 feet (in Canada), check with local authorities.

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8.0 Connecting the Gas Pipe:
An accessible inline isolation or service valve must be fitted and pipe run to the fireplace as
shown below. An inlet pressure test point must also be fitted to the inlet side of the
appliance valve. Copper should be run directly to the fireplace and connected onto the
Dormont hose with a 1/2” NPT thread nut.
9.0 Power Supply:
Your fireplace has been supplied with a transformer and a battery back-up provision-
4 x AA Cells; located in top of the receiver (control) unit.
9.1 If you are using a power transformer:
Whilst the cavity is being created consideration should be given to appropriate location of a
standard 3 pin, 110V power outlet to accommodate the power transformer. This must be
within 5ft of the lower left hand side of the appliance.
Locating this plug within the cavity makes the installation very neat but the provision must
be made to be able to switch the power supply off and on (electrical isolation switch) and
must be accessible after the fire has been installed. This is normally done by means of a
separate switch located outside of the cavity and wired to the plug. This will allow service
technicians to isolate the power supply before performing service work on the appliance.
The power transformer cord should be run, as shown below left, through the small
hole in the rear of the fire and connected to the panel mounted plug pictured below right.
This appliance will draw a maximum of 0.2A from an 110V AC supply.
If a power transformer is plugged into the receiver, it will become the default power source.
The batteries (if fitted) will only be consumed if there is a mains power outage.
S 900T
Cavity
S 900T
S 900T
Cavity
CavityCavity
Alternate gas
supply route

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10.0 Fixing the Fireplace to the base and wall:
It is a requirement that this fireplace be
securely fastened to the wall and base. Once
the fireplace has been pushed back into the
correct position, use wood screws (or other
suitable fasteners) to fix the fireplace to the
cavity through each of the four holes in the
corners, as shown in the diagram to the right.
Note: It may be necessary to use washers on
the fasteners to securely fasten the fireplace
to the wall.
When fixing the fireplace in position ensure
that you leave a gap between the fireplace
flange and the framing timber for the wall
lining, which will be added at a later stage.
11.0 Removing the Firebox Glass:
Pull the four hooks shown below towards you and then away from the glass to release the
glass frame underneath the hook.
Do not operate the appliance if the glass has been broken, damaged, or the glass is
not properly positioned/hooked onto the appliance.
WARNING: Do not operate appliance with the glass format removed, cracked or broken.
Replacement of the glass should be done by a licensed or qualified service person.

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Ø8"
280.0
280.0
174.8
Ø10.43" hole required in
wall to fit wall terminal 12.5"
12.5"
7.87" max-
4.72" min
Optional Wall
Thimble
12.0 Installing the Flue System:
Ensure all flue components are Simpson Duravent Direct Vent Pro 5” x 8,” or a compatible
equivalent.
Note: Consult Appendix A at the end of this installation manual (section 24.0) to
ensure correct length of flue is calculated.
There are two basic types of Balanced Flue System installations:
• Horizontal Termination
• Vertical Termination
Use the diagrams in sections 12.5, 12.6 & 12.7 to check if your proposed flue system is
acceptable. Section 12.9 will also need to be used to determine whether the flue terminal
location meets the requirements of ANSI Z21.88-2009 Vented Gas Fireplace Fireplaces.
Then use Appendix A to work out the quantities of the flue components that are required.
This gas appliance must not be connected to a chimney flue serving a
separate solid-fuel burning appliance
12.1 Any offsets in your flue configuration should be 45° where possible.
12.2 If your flue configuration has a horizontal run, there must be a minimum 1° inclination (3/4”
vertical rise per 3’ horizontal run) leading upwards towards the termination.
Do not install the flue with horizontal sections sloping down towards the termination.
This could cause the fireplace to operate incorrectly and possibly create an unsafe
condition.
12.3 The flue must maintain the
following clearances to
combustible materials; 1” from all
sides and bottom of the flue, and
2” from the top of the flue.
12.4 If your flue configuration falls on
or near a restriction zone
boundary line in diagrams 12.5,
12.6 & 12.7, it may require the
restriction value from either side
of the boundary line to achieve
the correct flame aesthetic, this
may vary from installation to
installation.

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12.5 Vertical Only Flue Diagram:
Use this diagram to
determine what
percentage of flue
restriction is required to
ensure safe and correct
operation of the ST900
Direct Vent Decorative
Gas Fireplace.
See Section 13.0

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12.6 Horizontally Terminating Flue Diagram:
Use this diagram to
determine what
percentage of flue
restriction is required to
ensure safe and correct
operation of the ST900
Direct Vent Decorative
Gas Fireplace.
See Section 13.0

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12.7 Vertically Terminating flue with a Horizontal Offset:
Use this diagram to
determine what
percentage of flue
restriction is required to
ensure safe and correct
operation of the ST900
Direct Vent Decorative
Gas Fireplace.
See Section 13.0

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12.8 Standard Flueing Configurations:
The following flue components are available from your Escea distributor/retailer in kitset
form.
DVF-H
DVF-V

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12.9 Locating the Flue Terminal:
The flue terminal must be located using the information given in the following excerpt from
ANSI Z21.88-2005 Vented Gas Fireplace Fireplaces.

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12.10 Supporting the flue system:
Wall straps are required to fix the flue system in place for each installation. This will ensure
that no undue strain is placed on flue components once installed.
For a flue offset or horizontal run, it is recommended that wall straps be used to the flue
system with a spacing of 3’ between straps. Plumbers strapping / tape can be used to
connect the wall straps to the building structure where there are large distances between
the support point and the anchor point.
For vertical flue runs it is recommended that wall straps be used to anchor the flue system
with a spacing of 4’ between straps.
12.11 Sealing ‘through roof’ and ‘through wall’ penetrations:
For ‘through roof’ penetrations, use a Decktite flashing or equivalent to create a weather-
tight seal between the flue and the roof cladding.
For ‘through wall’ penetrations, this will require the use of a Wall Thimble. The Wall Thimble
will ensure you have suitable clearance from combustibles as well as sealing the
penetration. The section of the wall thimble installed on the external surface of the wall
should be sealed to the wall using a high temperature sealant such as Mill-Pac High
Temperature Sealant or equivalent. Additional sealant is required to seal the Terminal Cap
to the external wall. A bead should be run along the edge of the Terminal that will be in
contact with the wall once installed.
12.12 Twist locking procedure:
Before connecting flue components, to ensure an airtight seal run a single 1/8” wide bead of
Mill-Pac High Temperature Sealant, or equivalent, on the ‘male’ end of the flue as
shown in the diagram below.
The four indentations located on the female end of the flue are designed to slide straight
onto the male ends of the adjacent flue length, by orienting the four flue indentations so
they match and slide into the four entry slots on the male ends.
Push the pipe sections completely together, then twist-lock one section clockwise
approximately one-quarter turn, until the two sections are fully locked.
Wipe off any excess sealant from the exterior of the flue joint.

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13.0 Fitting the Flue Restrictor:
If your flueing configuration requires that you fit a flue restrictor
(see graph in section 12.5, 12.6, 12.7 of this manual to find out
if your configuration requires a flue restrictor), follow the
instructions below.
First, prepare the Flue Restrictor by removing and discarding
the inner rings to achieve either 60% or 70% restriction as
required and hand bending the five tabs 90°
Remove the firebox glass (if fitted),
and using a Phillips / Pozi Drive
screwdriver remove the two screws
located inside the firebox as shown.
Once the two screws are removed the baffle
will be free to slide down and out as pictured.
Ensure the firebox paint is not scratched and
that the baffle is not damaged.
Fit the flue restrictor by pushing it up into the flue
with the tabs facing downwards as shown. Push
it up into the flue until the tabs no longer
protrude into the firebox and it is securely
placed. If the restrictor is loose or will not stay in
position manipulate the five tabs to suit.
Once the restrictor is in place, replace the baffle
taking care not to damage or scrape the paint,
and replace the two screws.

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14.0 Converting to Propane Gas:
Where a conversion to propane gas is needed, the following steps should be followed
14.1 First you need to remove the burner by
removing the screw holding it in place on the
left hand side of the firebox (Fig. 1).
Then remove the 1.9mm burner jet (Fig. 2)
and replace it with the 1.2mm jet supplied in
the kit.
Now remove the gas pipe fitting under the
pilot (Fig. 3) and remove the pilot Jet (Fig. 4)
and replace it with the No.23 pilot jet supplied
in the kit. No. 23 is used for Propane.
Replace pilot line.
Check the pilot line for leaks once assembled.
Set the Primary Aeration Collar on
the burner to the Propane position as shown in the diagram
by removing the screw in the side and then replacing it
when the collar is in the correct position.
NOTE: the collar is only able to be set to either NG or
Propane positions. This is not an adjustable system.
Place the burner back into the appliance and screw it in
place.
Set the pressure using the following instructions: