Moberg Fireplaces GS-18-3 Operating instructions

Brand: Moberg Fireplaces

Model: GS-18-3

Category: Fireplaces

Type: Operating instructions

Moberg Fireplaces GS-18-3 is a decorative gas log system designed for use in solid fuel burning fireplaces with a working flue. It is made of noncombustible materials and has a minimum firebox dimension of 22” High x 24” Wide x 20” Deep. The system is designed to burn Natural Gas ONLY and has a minimum inlet supply pressure of 5” W.C. and a maximum inlet supply pressure of 10.5” W.C. It features an electronic ignition system and includes a fireplace screen to prevent sparks from escaping. The system also has a built-in modulating valve to control the flame height and heat output.

INSTALLATION AND OPERATION GUIDE FOR

MOBERG fireplaces

Georgian series gas log system GS-18-3

For all models tested by OMNI-Test Laboratories, Inc., to ANSI Z21.60-2003/CGA 2.26-2003, Decorative

Appliance for Installation in Solid Fuel Burning Fireplaces. For model number and OMNI seal refer to

attached nameplate. Copyright Moberg Fireplaces 1-25-05

-This appliance to be installed only in a solid fuel burning fireplace with a

working flue and constructed of noncombustible material. The minimum

firebox dimensions are: 22” High x 24” Wide x 20” Deep.

WARNING: If the information in

this manual is not followed

exactly, a fire or explosion ma

result causing property dam

personal injury or loss of life.

age,

the

ier.

Do not store or use gasoline or

other flammable vapors and

liquids in the vicinity to this or any

other appliance.

WHAT TO DO IF YOU SMELL GAS

• Do not try to light any appliance.

• Do not touch any electrical

switch.

• Do not use any phone in your

Building.

• Immediately call your gas

supplier from a neighbor’s

phone. Follow the gas supplier’s

instructions.

• If you cannot reach your gas

supplier, call the fire department.

• Installation and service must be

performed by a qualified

installer, service agency or

gas suppl

-This gas appliance is designed to burn Natural Gas ONLY.

-The fireplace’s chimney must have a permanent vent opening to

atmosphere of not less than 58 square inches.

-Solid fuels shall not be burned in a fireplace where a decorative appliance

has been installed.

-Any chimney damper in the system should be in a fixed open position –or-

be of an automatic variety that has proving capabilities compatible with

appliance gas controls.

-A fireplace screen must be in place when appliance is operating and,

unless other provisions for combustion air are provided, the screen shall

have an opening(s) for introduction of combustion air.

-The minimum inlet supply pressure for the purpose of input adjustment is

5” W.C. The maximum inlet supply pressure is 10.5” W.C.

-There are many different local codes for gas-fired systems. Their

installation and the provision for combustion and ventilation air must

conform to local codes and, or in the absence of local codes, with the

National Fuel Gas Code ANSI Z223.1/NFPA 54 or the CSA B149.1,

Natural Gas and Propane Installation Code.

-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.

-The appliance area is to be clear of combustible materials, gasoline and

other flammable vapors and liquids.

-The appliance and its main appliance gas valves must be disconnected

from the gas supply piping system during any pressure testing of that

system at test pressures in excess of ½ psi (3.5kPa). The appliance must

be isolated from the gas 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 ½ psi (3.5kPa).

-The fireplace chimney or venting system should be examined annually

and cleaned as required by a qualified agency.

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NOTE: Moberg Fireplaces Georgian Series Gas Log Systems are designed to be assembled by

a Moberg Fireplaces approved technician only. These sophisticated decorative gas log systems

also require individual site-specific plans and specifications. They are designed to be fully

integrated into the building control systems.

I. System Installation and Grating Assembly

Pre Installation

• Consult Moberg Fireplaces typical wiring/plumbing diagrams for exact protocols. Typically gas supply route is to be:

manual ball valve→ electronic solenoid valve→ pressure regulator→ Robert Shaw electronic valves→ modulating

valves.

• Verify plumbing for gas and electrical conduits are stubbed into fireboxes including aluminum pilot tubing(s).

• Verify high temperature ignition wire(s) are pulled into firebox

(Consult MFI Typical Electronic Ignition Wiring Diagrams TJ-GS-PE1, PE1.1attached)

• Verify gas pressure is within correct pressure range.

• Verify all fireplace masonry and/or stonework is finished.

• Verify damper blade and/or damper motor functions.

• Verify manual gas valves, Robert Shaw electronic valves, modulating valves, time delays, manual switching, and

transformers are installed and functional

Preliminary Installation

• Place grating in firebox, centered and within 6” of rear wall of firebox (or simply centered for double-sided fireplace

installations).

• Consult Moberg Fireplaces drawing TJ-MFI-G1.3 showing plan at fireplace for exact grating placement.

• Adjust four grating legs and locknuts so that grating is level side-to-side and front-to-back, and placed above hearth

at required height for particular model.

• Plumber and electrician to make physical connections to gratings, hearth effect burners (if applicable) and ignitors

(using steel snap-spring connectors).

• Connect main burner(s) to gas supply using approved flexible gas line(s) in firebox (if allowed).

• Test pilot flame(s) and igniter function with gas supply to burner(s) off at Robert Shaw electronic valve.

• Contractor to install grating in firebox, prior to MFI technician’s arrival on job-site.

Final Installation and Grating Assembly

• Moberg Fireplaces technician to arrive after preliminary installation of grating, burners and ignitors to inspect and

adjust valving, control system, place logs and sculpt flames around logs.

• Technician to install copper slag, logs and hearth effects materials.

• On-site support of plumber and electrician is required during assembly period to activate gas or electrical systems,

modify installation and verify safety mechanisms. Client is responsible for ensuring their availability.

II. Operating Instructions for Electronic Gas Controls

There are two locations to operate the gas fireplace. One location is a local wall Switch near the fireplace for normal

interface of operations, and the other is an HMI panel (human machine interface) located in the user control panel near the

signal control panel. The HMI has more capabilities than the Lutron Switch.

It is intended that the wall Switch will be used primarily for normal operations and the HMI will be used for initial set up and

tuning the scene settings for the gas burners.

WALL SWITCH OPERATION – EFFECT

1. OFF lamp illuminated fireplace is in (Standby) unless in lockout condition. (HMI operation section 6 explains the lockout

condition)

2. Pressing the ON button, the start-up sequence begins. The OFF lamp will turn off and the ON lamp will flash during the

start-up sequence. Once all the interlocks have been satisfied the ON lamp will illuminate steady and the fireplace burners

will ignite.

3. The fireplace has three options that can be selected by pushbuttons for different scenes; scene 1 (low), scene 2

(medium), and scene 3 (high). There is an illuminated lamp next to each pushbutton to identify which scene is selected.

After the fire is started it will go to whichever scene is selected. At any time a different scene can be selected.

4. Pressing the OFF button at any time will turn the flames off. The fireplace is then in (Standby) with the OFF lamp

illuminated.

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HMI OPERATION – EFFECT

The HMI has six touch screens:

1. Main screen

2. Start and stop screen

3. Hearth burner fine tuning screen

4. Burner 1 fine tuning screen

5. Burner 2 fine tuning screen

6. Diagnostics screen

Each screen can be displayed by pressing the function keys 1 through 6 on the right side of the HMI or each screen has a

touch-button for MAIN (main screen), NEXT, and BACK. Each button on the screens identifies their state by: OFF-raised

position and ON-indented position.

1. Main screen. Has the index of the screen locations

2. Start and stop screen. This screen is divided into two parts.

Start and stop of fireplace

• OFF touch-button in the indented position fireplace is in (Standby) unless in lockout condition. (Section 6 explains

the lockout condition)

• Press the raised ON touch-button, the start sequence begins. The OFF touch-button will change to the raised

position and the ON touch-button will flash during the start up sequence. Once all the interlocks have been satisfied

the ON touch-button will change to the indented position and the fireplace burners will ignite.

Scene control

• LOW touch-button fireplace scene. Positions raised OFF / indented ON

• MEDIUM touch-button fireplace scene. Positions raised OFF / indented ON

• HIGH touch-button fireplace scene. Positions raised OFF / indented ON

3. Hearth burner fine tuning screen.

• Range of burner indication 0-100%. Displays the percentage of the burner firing for which scene is selected.

• Low selected up and down arrow touch-buttons. If low is selected it will be high lighted. The value of the 0-100%

can be changed at 1% increments up or down using the arrow touch-buttons.

• Medium selected up and down arrow pushbuttons. If medium is selected it will be highlighted. The value of the 0-

100% can be changed at 1% increments up or down using the arrow touch-buttons.

• High selected up and down arrow pushbuttons. If high is selected it will be high lighted. The value of the 0-100%

can be changed at 1% increments up or down using the arrow pushbuttons.

4. Main burner 1fine tuning screen.

• Range of burner indication 0-100%. Displays the percentage of the burner firing for which scene is selected.

• Low selected up and down arrow touch-buttons. If low is selected it will be highlighted. The value of the 0-100%

can be changed at 1% increments up or down using the arrow touch-buttons.

• Medium selected up and down arrow touch-buttons. If medium is selected it will be highlighted. The value of the 0-

100% can be changed at 1% increments up or down using the arrow touch-buttons.

• High selected up and down arrow touch-buttons. If high is selected it will be highlighted. The value of the 0-100%

can be changed at 1% increments up or down using the arrow touch-buttons.

5. Main burner 2 fine tuning screen

• Range of burner indication 0-100%. Displays the percentage of the burner firing for which scene is selected.

• Low selected up and down arrow touch-buttons. If low is selected it will be highlighted. The value of the 0-100%

can be changed at 1% increments up or down using the arrow touch-buttons.

• Medium selected up and down arrow touch-buttons. If medium is selected it will be highlighted. The value of the 0-

100% can be changed at 1% increments up or down using the arrow touch-buttons.

• High selected up and down arrow touch-buttons. If high is selected it will be highlighted. The value of the 0-100%

can be changed at 1% increments up or down using the arrow touch-buttons.

Page 3 of 16

6. Diagnostics screen.

• BMS SHUT BURNERS DOWN highlighted when activated. If the building management system interlocks fail while

running the fireplace it will shut the fireplace down. However if the system is corrected within five seconds the

fireplace will remain in operation.

• RESET REQUIRED highlighted when activated. If during trial for ignition no flame is established in both burner

systems for more then five minutes reset will be required.

• RESET REQUIRED touch-button. Positions raised no reset required

Custom Gas Log System Maintenance Schedule

To ensure proper functioning of the gas log system (GLS) it is important to maintain the system on a regular basis. Systems

in high-traffic public areas should have a screen or other effective barrier to keep trash and other foreign objects out of the

firebox area. This system was not designed to burn any solid fuels: do put any wood, paper, plastic, etc. in firebox with GLS.

As always, wear proper safety clothing, i.e., proper eye protection, breathing/dust mask, gloves etc. when cleaning or

maintaining. Be mindful of spreading soot particles to clothing and surfaces in home. Do not attempt any cleaning in the

firebox until the flame has been off for several hours and the firebox is cool. Be certain the gas supply is turned off at

manual valve before attempting service.

Daily/Weekly Maintenance:

• System must be vacuumed free of large carbon deposits frequently. Use a quality hearth or shop vacuum cleaner

with effective dust filter. It is recommended to have a slender brush attachment fitted to the vacuum hose and a

strong light source directed into the firebox. Cleaning is best done when fire has been shut off for several hours.

a. Begin by noting exact placement of logs on grating or consulting Log Map Drawing (page 7) provided by

Moberg Fireplaces. It is vital to the proper function of this system that logs are maintained exactly as

Moberg Fireplaces intended – Do not move logs, except to restore to original positions after

cleaning.

b. Starting with the top layer of logs and working down through the log stack with logs remaining in position,

use vacuum brush attachment to clean logs. Use a light touch on the logs as cast material can become

fragile after extended use. Allow suction to remove most of the material, only allowing brush to touch

heaviest deposits. Take care not to brush large pieces of carbon into burner trays.

c. Vacuum large pieces of carbon from burner trays, keeping nozzle well away from black copper slag in trays.

Do not vacuum copper slag out of burner trays.

d. Use soft brush attachment to clean sidewalls of firebox, taking care not to scratch the surface.

e. Vacuum large pieces of carbon from the firebox floor and under the grate, again taking care not to remove

any sand, vermiculite, ceramic ember pieces, or copper slag.

f. Use flashlight to check pilot assemblies are free of

carbon build-up. Anything lying on or over the pilot

assembly could affect function. Anything touching

the metal connector for the ignition wire could also

affect function.

(Pilot/ignitor assembly with shield at hearth effects burner)

Page 4 of 16

g. Check condition of the ceramic logs for large cracks,

fissures or missing pieces.

h. Check the wires for melting, loose or broken connections.

i. Check the aluminum pilot tubing for pinching or cracking.

j. Check the gas connections and fittings for looseness.

(Pilot/ ignitor assembly at rear of grate)

(Gas connections at rear of unit)

Annual Routine Maintenance: should be completed by qualified gas service or HVAC technician in addition to above.

1. Remove logs carefully (logs are fragile); inspect for large cracks, fissures or missing pieces.

a. Take note of log position for replacement (see page 7).

b. Place the logs on a blanket or newspapers to protect surfaces.

c. Vacuum/scoop the slag from the burner trays.

d. Clean the pilot/ignitors, being careful not to damage the wire tips or ceramic insulators.

e. Clean the flame sensor tip with emery cloth.

f. Check the ignition brackets for tightness and alignment with top edge of burn tray.

g. Check the wire connections to the ignitors for corrosion, cracking or looseness.

h. Vacuum the firebox floor and hearth burner (if applicable) to remove soot, dust carbon and old mineral

wool.

i. In systems with hearth effect burners, check all connections to the burner and the pilot/igniter assembly as

above.

j. If firebox walls are also to be restored, first vacuum, then wash the masonry firebox walls at this time, if

desired, using a damp sponge and cleanser.

k. Replace the black copper slag on the firebox floor or fill hearth effects burner to edge (refer to attached

photos for material positions).

Page 5 of 16

l. Dust the slag with one handful of dry white silica sand.

m. Place a half-dozen dime size pieces of new mineral wool randomly on hearth burner tray.

n. Replace the ceramic coal pieces around the front area under the grating.

o. Refill the burner trays on the grate to the rim with new Black Flame Diffuser being careful not to plug pilot

orifice(s).

p. Reinstall the ceramic logs in the positions detailed by the Moberg Fireplaces log map.

(Additional materials for hearth effects, L-R: sand,

v lite, coals, log-pieces)

(Typical hearth effects layout)

ermicu

rouble Shooting:

T should be completed by qualified gas service or HVAC technician.

is grounding the wire snap connector at the igniter terminal.

2. The pilot lig burner shuts down prematurely; or the igniter continues to

me appearance.

blue:

: clogged orifice filter, clogged pilot filter, low gas pressure or

ii. The pilo

irty orifice, primary air not being provided, or pilot adjustment at

iii. The pilo aving blue:

ft at pilot or recirculation of combustion products.

iv. The lo

1. Gas log system will not light.

a. Check the gas supply

b. Check the electrical supply.

c. Check igniter(s) for spark.

i. Check that nothing

ii. Check for foreign objects blocking the spark at the igniter tip.

iii. Check that the wire connection is clean and tight.

iv. Check the ignition wire for continuity.

hts but the main burner does not; the main

spark after the pilot is lit.

a. Check the pilot fla

i. The pilot flame is small and

• Check for lack of gas from

pilot adjustment at minimum.

t flame is lazy and yellow:

• Check for lack of air from d

minimum.

t flame is w

• Check for excessive dra

pi t flame is noisy and lifting off the ignitor:

• Check for high gas pressure.

Page 6 of 16

b. Check for p f .

h of sensor tip; if not, adjust at control valve.

c. Chec

g metal parts:

ii. Ceramic sed to high heat from direct flame impingement:

iii. Ceramic

iv. Check i

og Layout for Georgian Grating:

ilot lame impingement of sensor tip

i. Pilot flame should envelope top 3/8 to ½ inc

k for grounding of sensor.

i. Foreign object groundin

• Remove object.

insulator is expo

• Bend bracket away or lower assembly at mounting point.

insulator cracked or damaged:

• Replace pilot/igniter assembly.

gnition wire.

ARNING: Failure to position the parts in accordance with these diagrams or failure to use only parts

specifically approved with this appliance may result in property damage, personal injury, and void

warranty and ASNI listing

c urse

-S4 (21” x 3.75” x 4.75”) log

First o

Front Log: GL

Rear Log: GL-S18 (18” x 4” x 4.75”) log

econd Course

(15” x 3” x 3”) log

log

Third Course

1M11 (11” x 3” x 3”) log

Left Log: GL-S11

Right Log: GL-S11M12 (12” x 3” x 3”)

Top Log: GL-S1

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MOBERG fireplaces

Georgian series gas log system

GS-18-3

Replacement Parts List

Manual Shut-Off Valve—3/4” FNW, Full Port 600 WOG

Custom Gas Fireplace Dual Burner System with Independent Hearth Effects Burner

Electronic Solenoid Valve – HW-V48A2151 Gas Solenoid Safety Shutoff Valve

Electronic Modulating Valves—(3) Maxitrol M520

a. Hi-medium main burner

b. Medium-low main burner

c. Hi-medium hearth effects burner

Electronic ignition valves (1) RS-700-056, (1) RS-722-079

Pilot burner/ignitor-sensors Honeywell (2) Q345A

Electronic Solenoid Valve – AV-K3A441T Lower Main Burner Valve

Gas Pressure Regulator w/ Pressure Tap – Maxitrol RV48

Hearth Effects Materials

a. Black copper slag for burner trays

b. White silica sand

c. Vermiculite

d. Small pieces mineral wool

e. 5 pieces steel wool flame diffuser

f. 4 small ceramic fiber coal pieces

g. 5 small ceramic fiber log pieces

Logs

a. GL-S4 (21” x 3.75” x 4.75”) log

b. GL-S18 (18” x 4” x 4.75”) log

c. GL-S11 (15” x 3” x 3”) log

d. GL-S11M12 (12” x 3” x 3”) log

e. GL-S11M11 (11” x 3” x 3”) log

Contact Moberg Fireplaces to order replacement parts or for specification.

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Moberg Fireplaces GS-18-3 Operating instructions

Brand: Moberg Fireplaces

Model: GS-18-3

Category: Fireplaces

Type: Operating instructions

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Moberg Fireplaces GS-18-3 Operating instructions

Moberg Fireplaces GS-18-3 Operating instructions

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