Regency I31-NG3 Installation guide

Brand: Regency

Model: I31-NG3

Category: Fireplaces

Type: Installation guide

This manual is also suitable for

U31-LP3

WARNING:

If the information in these instructions are not followed ex-

actly, a ﬁ re or explosion may result causing property damage,

personal injury or loss of life.

FOR YOUR SAFETY

Do not store or use gasoline or other ﬂ ammable vapors and

liquids in the vicinity of this or any other appliance.

Installation and service must be performed by a qualiﬁ ed

installer, service agency or the gas supplier.

FOR YOUR SAFETY

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 build-

ing.

Immediately call your gas supplier

from a neighbour's phone. Follow

the gas supplier's instructions.

If you cannot reach your gas

supplier, call the ﬁ re department.

FPI FIREPLACE PRODUCTS INTERNATIONAL LTD. 6988 Venture St., Delta, BC Canada, V4G 1H4

919-099

MODELS: U31-NG3 Natural Gas U31-LP3Propane

10/17/12

U31 Gas Insert

Owners &

Installation Manual

www.regency-ﬁ re.com

Tested by: Installer: Please complete the details on the back cover

and leave this manual with the homeowner.

Homeowner: Please keep these instructions for future reference.

2Regency U31-3 Gas Fireplace Insert

FPI GAS

FIREPLACE INSERT

TO THE NEW OWNER

Congratulations! You are the owner of a state-of-the-art Gas Insert by FPI.

The FPI Gas Insert Series of hand crafted appliances has been designed to provide you

with all the warmth and charm of a ﬁ replace, at the ﬂ ick of a switch. The models U31-NG3

and U31-LP3 of this series have been approved by Warnock Hersey for both safety and ef-

ﬁ ciency. As it also bears our own mark, it promises to provide you with economy, comfort

and security for many trouble free years to follow. Please take a moment now to acquaint

yourself with these instructions and the many features of your FPI Fireplace.

Regency U31-3 Gas Fireplace Insert 3

DIMENSIONS

Note: Oversize faceplate is 44" x 28" (1118 mm x 711mm)

Low Proﬁ le Faceplate Dimensions

40-3/4 (1036mm)

35-15/16 (912mm)

27-15/16 (710mm)

14-7/8 (378mm)

22 (559mm)

23-15/16 (607mm)

10-7/8”

(276mm)

* Standard size shown, custom size also available.

4Regency U31-3 Gas Fireplace Insert

TABLE OF CONTENTS

OPERATING INSTRUCTIONS

Operating Instructions .............................................24

Lighting Procedure ..................................................24

Shutdown Procedure ...............................................25

First Fire .............................................................25

Automatic Convection Fan Operation......................25

Normal Operating Sounds of Gas Appliances .........25

Copy of Lighting Instruction Plate ............................27

MAINTENANCE

Maintenance ............................................................26

Gold Plated Trim ...............................................26

Log Replacement ..............................................26

Glass Gasket ....................................................26

Door Glass Replacement ..................................27

Flush Glass Replacement .................................27

Fan Maintenance .....................................................27

PARTS

Parts List .............................................................28

WARRANTY

Warranty .............................................................35

Unit Dimensions ........................................................3

Safety Label...............................................................5

INSTALLATION

For Your Safety ..........................................................7

Speciﬁ cations ............................................................8

Installation into a Solid Fuel Fireplace .......................8

General Safety Information........................................8

Installation Checklist ..................................................9

Materials Required ...................................................9

Minimum Fireplace Clearances .................................9

Clearances to Combustibles......................................9

Conversion to Propane Kit.......................................10

Gas Connection .......................................................10

High Elevation .........................................................10

Draft Hood Connection ............................................10

Venting .............................................................11

Combustion & Ventilation ..................................11

Gas Pressure Test ...................................................11

Gas Insert Aeration System .....................................11

Test for Flue Spillage ...............................................11

Optional Brick Panel ...............................................12

Log Installation ........................................................13

Faceplate & Trim .....................................................16

Glass Front Installation

Standard Flush Door (1 panel) ..........................16

Flush Louvers ...................................................17

Wiring Diagram ........................................................18

Full Screen Front .....................................................19

Excalibur Surround ..................................................20

Low Proﬁ le Faceplate Installation............................22

Optional Wall Thermostat ........................................27

Optional Remote Control ........................................27

Final Check .............................................................27

Regency U31-3 Gas Fireplace Insert 5

This is a copy of the labels that accompany

each U31-3Gas Insert. We have printed a copy

of the contents here for your review. The safety

label is located on a plate inside the base of the

unit visible when the bottom louver is opened.

NOTE: FPI units are constantly being im-

proved. Check the label on the unit

and if there is a difference, the label

on the unit is the correct one.

DO NOT REMOVE THIS LABEL /

NE PAS ENLEVER CETTE ETIQUETTE

Serial No. / No de serie

400

Min. supply pressure 5" WC (1.25kPa)

Low Setting Man. pressure 1.6" WC (0.40kPa)

Max. Manifold pressure 3.5" WC (0.87kPa)

Orifice size 37 DMS (2.64mm)

Minimum input 20,600 Btu/h (6.04kW)

Altitude 0-2000ft (0-610m)

Maximum input 30,000 Btu/h (8.79kW)

Use Conversion Kit (Part #400-970)

Min. supply pressure 5" WC (1.25 kPa)

Low Setting Man. pressure 1.6" WC

Max. Manifold pressure 3.5" WC

Orifice size 40 DMS (2.49 mm)

Minimum input 19,200 Btu/h (5.62kW)

Altitude 2000-4500ft (610-1370m)

Maximum input 27,200 Btu/h (7.97kW)

(0.40kPa)

(0.87kPa)

919-098

Mantel Clearances in Masonry

Fireplace Installation

NATURAL GAS FIREPLACE INSERT:

MODEL U31-NG3

PROPANE FIREPLACE INSERT:

MODEL U31-LP3

12" WC (2.99 kPa)

6.4" WC (1.59 kPa)

10" WC (2.49 kPa)

52 DMS (1.6mm)

22,000 Btu/h (6.45kW)

0-2000ft (0-610m)

28,000 Btu/h (8.21kW)

2" WC (2.99 kPa)

53 DMS (1.5mm)

20,000 Btu/h (5.86 kW)

2000-4500ft (610-1370m)

25,000 Btu/h (7.33 kW)

Use Conversion Kit (Part #400-971)

6.4" WC (1.59 kPa)

10" WC (2.49 kPa)

FPI Fireplace Products International Ltd.

Delta BC, CANADA

MADE IN CANADA / FABRIQUE AU CANADA

Model: U31-NG3 Model: U31-LP3

Factory Equipped For Altitude 0-2000ft. (0-610m)

Field Convertible For Altitude 2000-4500ft.(610-1370m)

Duplicate Serial number

This appliance must be installed in accordance with local codes, if any; if none, follow the National Fuel Gas Code, ANSI Z223.1, or

Natural Gas and Propane Installation Code, CSA B149.1.

This appliance must be installed in accordance with the Standard CAN/CSA Z240 MH, Mobile Housing, in Canada, or with the Manufactured

Home Construction and Safety Standard, Title 24 CFR, Part 3280, in the United States, or when such a standard is not applicable,

ANSI/NCSBCS A225.1/NFPA 501A, Manufactured Home Installations Standard or ANSI A119.2 ou NFPA 501C Standard for Recreational

Vehicles

This appliance is only for use with the type of gas indicated on the rating plate and may be installed in an aftermarket, permanently located,

manufactured (mobile) home where not prohibited by local codes. See owner's manual for details.

WARNING.This fireplace has been converted for use with a gas fireplace insert only and cannot be used for burning wood or solid fuels unless

all original parts have been replaced, and the fireplace re-approved by the authority having jurisdiction.

Installer l'appareil selon les codes ou règlements locaux, ou, en l'absence de tels règlements, selon les codes d'installation ANSI Z223.1,

National Fuel Gas Code ou CSA-B149.1 en vigueur.

Installer l'appareil selon la norme CAN/CSA-Z240, Série MM, Maison mobiles ou CAN/CSA-Z240 VC, Véhicules de camping, ou la norme 24

CFR Part 3280, Manufactured Home Construction and Safety Standard. Si ces normes ne sont pas pertinentes, utilisez la norme

ANSI/NCSBCS A225.1/NFPA 501A, Manufactured Home Installations Standard, ou ANSI A119.2 ou NFPA 501C Standard for Recreational

Vehicles.

AVERTISSEMENT : Ce foyer a été converti pour utilisation avec un foyer au gaz encastrable et ne peut être utiliser pour brûler du bois ou

d'autres combustibles solides à moins que toutes les pièces d'origine aient été remplacées et que le foyer ait été approuvé de nouveau par

l'autorité compétente.

For use with glass doors certified with the appliance only

This vented gas fireplace heater is not for use with air filters. Ne pas utiliser de filtre à air avec ce foyer au gaz à évacuation.

Cet appareil doit être utilize uniquement avec le type de gaz indiqué sur la plaque signalétique. Cet appareil peut être installé dans une maison

préfabriquée ou mobile (É.-U. seulement) installée à demeure si les règlements locaux le permettent. Voir la notice de l'utilisateur pour plus de

renseignements. Cet appareil ne peut pas être utilisé avec d'autres gaz sauf si une trousse de conversion certifiée est fournie.

Pour utilisation uniquement avec les portes en verre certifiées avec l'appareil

Minimum Clearances to Combustibles from Insert

Side wall A 10"(255mm)

Ceiling B 47-1/2"(1205mm)

Alcove Width K 48"(1220mm)

Max. Alcove Depth L 36"(915mm)

NOTE: for Zero Clearance Kit clearances to

Combustibles. See manual for details.

Max. Mantel depth M 12"(305mm)

Mantel height N 17"(432mm)

Mantel depth O 3-1/2"(89mm)

Mantel height P 13"(330mm)

Floor Q 19-1/2"(495mm)

Mantel Clearances in Zero Clearance

Kit Installations

Max. Mantel depth M 12"(305mm)

Mantel height N 22"(432mm)

Listed:

Certified for/Certifi e pour:

Tested to:

CANADA and U.S.A.

VENTED GAS FIREPLACE HEATER

Tested to:

FOYER AU GAZ À ÉVACUATION

CAN/CGA-2.17-M91(R2009)

ANSI Z21.88-2009/CSA 2.33-2009

Electrical supply / Électrique 115VAC, 2.5 A, 60Hz, Less than 10A Fan Part # 911-071

VENTED GAS FIREPLACE HEATER - NOT FOR USE WITH SOLID FUELS. /

NE PAS UTILISER AVEC DUCOMBUSTIBLE SOLIDE.

FOYER AU

GAZ À ÉVACUATION -

4001172

For the State of Massachusetts, installation and repair must be done by a plumber or gasﬁ tter licensed in the Commonwealth of

Massachusetts.

For the State of Massachusetts, ﬂ exible connectors shall not exceed 36 inches in length.

For the State of Massachusetts, the appliances individual manual shut-off must be a t-handle type valve.

The State of Massachusetts requires the installation of a carbon monoxide alarm in accordance with NFPA 720 and a CO alarm

with battery back up in the same room where the gas appliance is installed.

6Regency U31-3 Gas Fireplace Insert

REQUIREMENTS

5.08: Modifications to NFPA-54, Chapter 10

(2) Revise 10.8.3 by adding the following additional requirements:

(a) 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 finished grade in the area of the venting, including but not limited to decks and porches, the following requirements shall

be satisfied:

1. INSTALLATION OF CARBON MONOXIDE DETECTORS. At the time of installation of the side wall horizontal vented gas fueled

equipment, the installing plumber or gasfitter shall observe that a hard wired carbon monoxide detector with an alarm and battery back-up is

installed on the floor level where the gas equipment is to be installed. In addition, the installing plumber or gasfitter shall observe that a battery

operated or hard wired carbon monoxide detector 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

qualified licensed professionals for the installation of hard wired carbon monoxide detectors

a. In the event that the side wall horizontally vented gas fueled 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 floor level.

b. 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 during said thirty (30) day period, a battery operated carbon

monoxide detector with an alarm shall be installed.

2. APPROVED CARBON MONOXIDE DETECTORS. Each carbon monoxide detector as required in accordance with the above provisions

shall comply with NFPA 720 and be ANSI/UL 2034 listed and IAS certified.

3. SIGNAGE. A metal or plastic identification plate shall 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 for the horizontally vented gas fueled heating appliance or equipment. 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".

4. INSPECTION. The state or local gas inspector of the side wall horizontally vented gas fueled equipment shall not approve the installation

unless, upon inspection, the inspector observes carbon monoxide detectors and signage installed in accordance with the provisions of 248 CMR

5.08(2)(a)1 through 4.

(b) EXEMPTIONS: The following equipment is exempt from 248 CMR 5.08(2)(a)1 through 4:

1. 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

2. Product Approved side wall horizontally vented gas fueled equipment installed in a room or structure separate from the dwelling, building or

structure used in whole or in part for residential purposes.

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:

1. Detailed instructions for the installation of the venting system design or the venting system components; and

2. A complete parts list for the venting system design or venting system.

(d) MANUFACTURER REQUIREMENTS - GAS EQUIPMENT VENTING SYSTEM NOT PROVIDED. When the manufacturer of a

Product Approved side wall horizontally vented gas fueled equipment does not provide the parts for venting the flue gases, but identifies

"special venting systems", the following requirements shall be satisfied by the manufacturer:

1. The referenced "special venting system" instructions shall be included with the appliance or equipment installation instructions; and

2. The "special venting systems" shall be Product Approved by the Board, and the instructions for that system shall include a parts list and

detailed installation instructions.

(e) A copy of all installation instructions for all Product Approved side wall horizontally vented gas fueled equipment, 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.

MA Code - CO Detector

(for the State of Massachusetts only)

Regency U31-3 Gas Fireplace Insert 7

INSTALLATION

CLOTHING OR OTHER FLAMMABLE

MATERIAL SHOULD NOT BE PLACED

ON OR NEAR THE APPLIANCE.

CHILDREN AND ADULTS SHOULD BE

ALERTED TO THE HAZARDS OF HIGH

SURFACE TEMPERATURES, ESPE-

CIALLY THE FIREPLACE GLASS, AND

SHOULD STAY AWAY TO AVOID BURNS

OR CLOTHING IGNITION.

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.

DUE TO HIGH TEMPERATURES, THE

APPLIANCE SHOULD BE LOCATED

OUT OF TRAFFIC AND AWAY FROM

FURNITURE AND DRAPERIES.

WARNING: FAILURE TO INSTALL THIS

APPLIANCE CORRECTLY WILL VOID

YOUR WARRANTY AND MAY CAUSE A

SERIOUS HOUSE FIRE.

YOUNG CHILDREN SHOULD BE CARE-

FULLY SUPERVISED WHEN THEY ARE

IN THE SAME AREA AS THE APPLI-

ANCE. TODDLERS, YOUNG CHILDREN

AND OTHERS MAY BE SUSCEPTIBLE

TO ACCIDENTAL CONTACT BURNS. A

PHYSICAL BARRIERS IS RECOMMEND-

ED 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.

FOR YOUR SAFETY

This appliance requires air for proper combustion.

Always provide adequate combustion and

ventilation air. Follow instructions and information

in CSA B149.1 (in Canada) or the National Fuel Gas

Code ANS Z223.1/NFPA (in the USA), regarding

requirements for combustion and ventilation air.

8Regency U31-3 Gas Fireplace Insert

INSTALLATION

IMPORTANT:

SAVE THESE

INSTRUCTIONS

The Regency Gas Insert must be installed in

accordance with these instructions. Carefully

read all the instructions in this manual ﬁ rst.

Consult the building authority having jurisdic-

tion to determine the need for a permit prior to

starting the installation.

NOTE: Failure to follow the instructions

could cause a malfunction of the

heater which could result in death,

serious bodily injury, and/or prop-

erty damage. Failure to follow these

instructions may also void your ﬁ re

insurance and/or warranty. This appli-

ance can be used with a thermostat.

FOR YOUR SAFETY

This appliance requires air for proper combus-

tion. Always provide adequate combustion

and ventilation air. Follow instructions and

information in CAN/CGA B149 (in Canada) or

the National Fuel Gas Code ANSI Z223.1 (in the

USA), regarding requirements for combustion

and ventilation air.

SPECIFICATIONS

At pressures over 1/2 psig, the pipe to the unit

must be disconnected.

Gas Input Capacity:

Natural Gas 30,000 Btu/h

Propane 28,000 Btu/h

Fuels: Approved for use with both natural

gas, and propane. Approved as is for use at

0' to 2,000'. With a ﬁ eld installed conversion

kit 0' - 4,500'.

Electrical: 120V A.C. system.

Circulation Fan: Variable speed, 127 CFM.

Log Set: Ceramic ﬁ bre, 7 per set.

Vent System: Minimum 4" B-Vent or listed

gas fuel vent liner.

GAS PRESSURE TESTING

The appliance must be isolated from the gas

supply piping system by closing its individual

manual shut off valve during any pressure

testing of the gas supply piping system at test

pressures equal to or less than 1/2 psig. (3.45

kPa). Disconnect piping from valve at test pres-

sures over 1/2 psig (3.45 kPa).

POLICY FOR SOLID FUEL

BURNING AND FACTORY

BUILT

FIREPLACES

The FPI U31-3 may be installed and vented into

any solid fuel ﬁ replace that has been installed

in accordance with the National, Provincial and

local building codes and is constructed of non-

combustible materials.

1) Installer must mechanically attach the supplied

label to the inside of the ﬁ rebox of the ﬁ replace

into which the gas ﬁ replace insert is installed.

General Safety Information

1) The appliance installation must conform with

local codes or in the absence of local codes,

with CAN/CGA B149 (in Canada) or the

National Fuel Gas Code ANSI Z223.1. This

appliance should be installed by a qualiﬁ ed

gas ﬁ tter technician only.

2) Installation and repair should be done by a

qualiﬁ ed service person.

3) 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, animal hair, etc. It is imperative that

control compartments, burners and circulating

air passageways of the appliance be kept clean.

4) See general construction and assembly instruc-

tions. This appliance may only be installed in a

vented, noncombustible ﬁ replace.

5) This appliance is Listed for bedroom installa-

tions. In Canada room heaters must be installed

with a Listed Millivolt Thermostat. Some areas

may have further requirements, check local

codes before installation.

6) This unit is not approved for installation into a

mobile home.

7) Always connect this insert to a vent system

venting to the outside of the building envelope.

Never vent to another room or inside a building.

Make sure that the vent is properly sized and is

of adequate height to provide the proper draft.

8) Inspect the venting system annually for blockage

and any signs of deterioration.

9) Any glass removed for servicing must be re-

placed prior to operating the appliance.

10) To prevent injury, do not allow anyone who is

unfamiliar with the operation to use the ﬁ replace.

11) Failure to position the parts in accordance with

the diagrams in this manual or failure to use only

parts speciﬁ cally approved with this appliance

may result in property damage or personal injury.

12) Due to high temperatures, the appliance should

be located out of high trafﬁ c areas and away

from furniture and draperies. Children and

adults should be alerted to the hazards of high

surface temperatures, especially the ﬁ replace

glass and gold trims, 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. Clothing or

other ﬂ ammable material should not be placed

on or near the appliance.

Emissions from burning wood or gas could

contain chemicals known to the State of

California to cause cancer, birth defects or

other reproductive harm.

4) The ﬁ replace ﬂ ue damper can be fully blocked

open or removed for installation of the gas

ﬁ replace insert.

5) The ﬁ replace and ﬁ replace chimney must be

clean and in good working order and constructed

of non-combustible materials.

6) The chimney cleanouts must ﬁ t properly.

7) Refractory (ﬁ rebricks), glass doors, screen rails,

screen mesh and log grates can be removed

from the ﬁ replace before installing the gas

ﬁ replace insert.

8) Smoke shelves, shields and bafﬂ es may be

removed if attached by mechanical fasteners.

If any part is removed it must not weaken the

structural integrity of the factory built.

9) Trim panels or surrounds shall not seal ventila-

tion openings in the ﬁ replace.

BEFORE YOU START

Safe installation and operation of this appliance

requires common sense, however, we are required

by the Canadian Safety Standards and ANSI Stand-

ards to make you aware of the following:

WARNING: This ﬁ replace has been con-

verted for use with a gas ﬁ replace insert

only and cannot be used for burning wood

or solid fuels unless all original parts have

been replaced, and the ﬁ replace re-ap-

proved by the authority having jurisdiction.

2) Do not cut any sheet-metal parts of the ﬁ replace,

in which the gas ﬁ replace insert is to be installed.

3) If the factory-built ﬁ replace has no gas access

hole(s) provided, an access hole of 1-1/2"

(37.5mm) or less may be drilled though the lower

sides or bottom of the ﬁ rebox in a proper work-

manship like manner. This access hole must be

plugged with a non-combustible insulation after

the gas supply line has been installed.

Regency U31-3 Gas Fireplace Insert 9

INSTALLATION

NOTE: Mantel clearances for Installation into

a Zero Clearance Kit are different. Please

refer to the Zero Clearance Kit Manual for

details.

MINIMUM FIREPLACE

DIMENSIONS

The minimum ﬁ replace dimensions for the FPI

gas ﬁ replace insert are shown in the following

diagrams:

Combustible Mantel Clearances in

Masonry Installation

8-1/8”

Low prole

Note: A non-combustible mantel may be in-

stalled at a

lower height

if the framing

is made of

metal studs

covered

with a non-

combustible

board.

INSTALLATION

CHECKLIST

The Regency Gas Insert is installed as listed below.

1) Unit Location - check Clearances to Combus-

tibles.

2) Make the gas connections.

Convert to Propane Gas if necessary.

3) Install the ﬂ ue or liner to the sliding draft hood.

4) Install Venting. Slide the unit into the ﬁ replace.

Attach draft hood to the insert.

5) Test gas pressure.. Check aeration

6) Test for ﬂ ue spillage.

7) Install the optional brick panels.

8) Install the log set.

9) Assemble and install the faceplate and trim.

10) Install the glass front.

11) Install louvers.

12) Install Optional Double Screen Door.

13) Install Optional Remote Control and Optional

Wall Thermostat.

14) Final check: Before leaving this unit with the

customer, the installer must ensure that the

appliance is ﬁ ring correctly. This includes:

a) Clocking the appliance to ensure the

correct ﬁ ring rate.

b) Adjusting the primary air, if required, to

ensure that the ﬂ ame does not carbon.

c) Ensuring that the appliance is venting

correctly.

MATERIALS REQUIRED

No electrical power supply is required for the gas

control to operate. A 120 Volt AC power cord is

hooked up to the fan. Plug the 3 wire cord into

a suitable receptacle. Do not cut the ground

terminal off under any circumstances. When

connected with 120 volts, the appliance must be

electrically grounded in accordance with local codes,

or in the absence of local codes, with the current

Canadian Electrical Code CSA C22.1 (in Canada)

or with the current National Electrical Code ANSI/

NFPA 70-1987 (in U.S.A.).

CLEARANCES TO

COMBUSTIBLES

From Unit

Sides A 10" / 255 mm

Ceiling B 47.5" / 1205 mm

Mantle C See mantle

clearances

Max. Mantel Depth G 12" / 305 mm

Min. Alcove Width K 48" / 1220 mm

Max. Alcove Depth L 36" / 915 mm

* No Hearth Required

Note: If you are installing the Excalibur Surround,

the minimum ﬁ replace dimensions are as follows:

Width (at front): 29" (737mm)

Depth: 16" (406mm)

NOTE: This unit is equipped with a heat sensor

thermodisc which will prevent the blower

from operating until the unit reaches the

correct temperature.

10 Regency U31-3 Gas Fireplace Insert

INSTALLATION

THIS CONVERSION MUST BE DONE BY A QUALIFIED GAS

FITTER IF IN DOUBT DO NOT DO THIS CONVERSION !!

Conversion Kit from Natural Gas to Propane

Model #404-969 for: U31-NG3 Units

1) Turn the unit off and allow it to cool to room

temperature.

2) Unplug or disconnect power source to stove.

3) Remove glass front (see manual).

4) Remove logs and brick panels (if installed).

5) Remove the Grate by removing the screws

on each side of the grate.

Remove the 2 screws holding

the grate in position.

Remove the 2 screws,

push Burner Tray to the left, and lift off.

6) Remove the Burner Tray by removing the

screws on each side of the tray. Push the

tray to the left and lift up.

7) Remove burner oriﬁ ce with 1/2" wrench and

replace with the #52 oriﬁ ce in the Kit.

8) Turn control knob to the “OFF” position

Burner

Oriﬁ ce

17) Pull off the pilot cap to expose the pilot oriﬁ ce.

18) Unscrew the pilot oriﬁ ce with the allen key and

replace with the LP pilot oriﬁ ce in the kit.

19) Replace Burner Tray and reverse steps 5) to

1).

20) Adjust the burner aeration setting to 3/8" to

3/8" as required for the best ﬂ ame picture.

. 1

9) Remove the black

protection cap by hand

from the hi-low knob (Fig.1).

12) Flip the screw (Fig. 3).

Fig.4

Fig.3

13) Using the Allen wrench as

shown in Fig.4, rotate the

screw clockwise until snug,

do not overtighten.

10) Insert a 5/32” or 4mm Allen

wrench into the hexagonal

key-way of the screw (Fig. 2),

rotate it counter-clockwise

until it is free and extract it.

11) Check that the screw is clean and if necessary

remove dirt.

WARNING!

Do not over tighten the screw.

Recommended to

grip the wrench by the short side.

14) Verify that if the conversion is from NG to LPG,

the screw must be re-assembled with the red

o-ring visible (Fig. 5).

LPG Configuration

Red o-ring visible

Fig.5

15) Re-assemble the black protection cap

(Fig. 6).

16) Reverse steps 6 - 1.

Regency U31-3 Gas Fireplace Insert 11

INSTALLATION

GAS CONNECTION

3) Locate the center point where the vent will

pass through the chimney above the appli-

ance. Move the appliance into the exact

location where it is to be installed. Ensure

that the Insert is level.

4) The installer must provide a valve with a

plugged tapping, accessible for test gauge

connection, immediately upstream of the

gas supply connection to the appliance.

HIGH ELEVATION

This unit is approved in Canada for altitude 0 to

2000 ft. with the oriﬁ ce supplied. For 0' - 4500'

use the optional ﬁ eld conversion kit (Part #400-

970 for Natural Gas units and Part #400-971 for

Propane units). In USA refer to ANSI Z223.1-

1988, Appendix F, for re-sizing oriﬁ ce.

GAS CONNECTION WARNING:

Only persons licensed to work

with gas piping may make the

necessary gas connections to this

appliance.

1) If the appliance is to be installed into an

existing chimney system, thoroughly clean

the masonry or factory built ﬁ replace.

2) The appliance is provided with an opening

on the left hand side of the control com-

partment. A 1/2" gas supply pipe must be

brought near this inlet hole. (See Diagram

3 on page 11).

NOTE: ﬁ nal gas connection should be after

unit is in place to avoid damage to line

when pushing the unit into position.

Diagram 1

WARNING: Operation of this appli-

ance when not connected to a prop-

erly installed and maintained venting

system or tampering with the blocked

vent shutoff system can result in

carbon monoxide (CO) poisoning and

possible death.

Combustion and Ventilation Air

WARNING: This appliance needs

fresh air for safe operation and must

be installed with provisions for ad-

equate combustion and ventilation

air available to the room in which it

is to be operating.

Follow CAN/CGA B149 (in Canada) or ANSI Z223.1

(in the USA) requirements, and any local codes or

regulations of the enforcing authority.

Air for combustion is drawn in through the front

of the unit, therefore, the front of the unit must be

kept clear of any obstructions.

GAS PRESSURE TEST

The unit is preset to give the correct gas input at the

speciﬁ ed manifold pressures shown on the label.

The maximum gas manifold pressure is:

Natural Gas 3.5" w.c.

Propane 10" w.c.

The manifold pressure is controlled by a regulator

built into the gas control, and should be checked at

the pressure test point. The pressure check should

be carried out with the unit burning and

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VENTING

This appliance is designed to attach to a 4" diam-

eter type B-Vent or listed gas fuel type vent liner

running the full length of the chimney. A minimum

ﬂ ue height of 12 feet is recommended. B-Vent

must be supported by a vent support - supplied

by vent manufacturer. See chart on this page

for minimum distances from roof.

The Regency Insert incorporates its own internal

draft hood, so no additional external draft hood

is required.

DRAFT HOOD

CONNECTION

1) Attach the vent to the ﬂ ue collar on the detach-

able draft hood. The ﬂ ue collar of the appliance

will ﬁ t inside a standard vent and may be fas-

tened directly to the vent by sheet metal screw.

Diagram 1.

2) Before pushing the appliance into position

inside the ﬁ replace, align the draft hood with

the guides on the insert top and pull forward.

While pushing the unit back into place, keep

pulling the draft hood forward until the screw

hole in the spill tube aligns with the screw hole

in the draft hood locking tab on the underside

of ﬁ rebox top. The screw is secured through the

draft hood locking tab into the front of the spill

tube. (If screw holes do not line up then draft

hood is not positioned correctly.

Periodically check that the vent is unrestricted and

an adequate draft is present when the unit is in

operation. (See page 8 for spillage test.)

Before installing vent system ensure that the damper

plate is open and secure to prevent the damper plate

from falling down and crushing the liner.

12 Regency U31-3 Gas Fireplace Insert

INSTALLATION

Diagram 1

3) After ﬁ ve minutes, test that there is a “pull” on

the ﬂ ue by placing a smoke match, cigarette or

similar device which gives off smoke, in front

of the spill tube. To ensure a valid test, place a

scrap piece of sheet metal (or other noncom-

bustible material) between the spill tube and

the upper louver, this will prevent the natural

convection of the unit from interfering with the

test. See diagram 1.

The smoke should be drawn into the spill tube. If

the smoke is still not drawn into the spill tube, turn

the unit off and check for the cause of the lack of

draft. If necessary, seek expert advice.

For wind turbulent sites, a wind cap may remedy

the problem.

Note: The thermally activated safety switch will

sense the change in temperature and shut down

the gas valve in the event of a severe downdraft

or a blocked or disconnected vent. The switch

acts as a safety shut-off to prevent a build-up

of carbon monoxide. If the ﬂ ue is blocked or

has no "draw", the switch will automatically

shut off the supply of gas within 5 - 10 minutes.

Tampering with the switch can result in carbon

monoxide (CO) poisoning and possible death.

If the heater turns off because of lack of draft

during the spillage test, check for the cause

and if necessary, seek expert advice.

The thermally actuated safety switch will auto-

matically reset after it has cooled off. The switch

will continue to cycle until the draft problem is

corrected. DO NOT BYPASS OR DISCONNECT

THIS SWITCH.

OPTIONAL

BRICK PANEL

1) Unwrap the brick pattern panels from the pro-

tective wrapping.

2) Remove the glass front if it is already installed.

3) Put the rear brick panel ﬂ at against the back of

the unit.

TEST FOR FLUE

SPILLAGE

A " spillage" test must be made before the

installed unit is left with the customer. Follow

the procedure below:

1) Start all exhaust fans in the home and then

close all external doors and windows in the

house.

2) Light the unit and set controls to maximum.

Turn fan off.

the setting should be within the limits speciﬁ ed.

GAS INSERT AERATION

SYSTEM

The aeration adjustment rod is attached to the

air shutter which is located just above the oriﬁ ce

bracket. The rod is used to adjust the aeration

on the main burner without having to take the

appliance apart.

The burner aeration is factory set but may need

adjusting due to either the local gas supply, air

supply or altitude.

Natural Gas: 3/8" (9.5mm) open

Propane: 3/8" (9.5mm) open

Note: Any damage due to carboning result-

ing from improperly setting the aera-

tion controls is NOT covered under

warranty.

Note: Aeration Adjustment should only

be performed by an authorized FPI

Installer at the time of installation or

service.

4) Before installing the side brick panels, loosen

the screws for the brick tabs enough so that you

can slide the brick clips on to the screws easily

but that the tabs are secure. For the location

of the side brick tab screws see Diagram 2.

5) Slide brick panel under brick clips, tighten screws

securing clips to complete installation.

Back Panel

Brick clip

Diagram 1

Diagram 2

Diagram 3

Check for proper draft by placing a

match close to the draft check open-

ing. This should be checked after the unit

Regency U31-3 Gas Fireplace Insert 13

INSTALLATION

LOG SET INSTALLATION

Read the instructions below carefully and refer to the diagrams. If logs are broken do not use the unit until

they are replaced. Broken logs can interfere with the pilot operation.

The gas log kit contains the following:

a) 02-43 Rear Log

b) 02-45 Front Right Log

c) 02-56 Middle Left Log

d) 02-46 Left Top Log

e) 02-47 Center Log

f) 02-48 Middle Right Log

g) 02-44 Front Left Log

h) 902-154 Embers

i) 902-153 Rockwool

j) 902-179/P Vermiculite

k) 946-669 Platinum Embers

(supplied with packaged manual)

Note: Install Optional Brick Panels prior to installing logs.

1) Carefully remove the logs from the box and unwrap

them. The logs are fragile, handle with care - do not

force into position.

2) Sprinkle the vermiculite around the ﬁ rebox base. Take

some of the embers (approx. 1/3 of the bag) and

sprinkle over the vermiculite.

3) Place Rear Log A)02-43 on the two pins on the rear

log support.

Vermiculite

and embers Vermiculite

and embers

Vermiculite

and embers

Pins on Rear Log Support

4) Place Front Right Log B)02-45 on the two pins as

shown.

A)02-43

B)02-45

The "02" refer numbers (i.e. 02-43) are

molded into the rear of each log.

14 Regency U31-3 Gas Fireplace Insert

INSTALLATION

Logs D)02-46 and E)02-47 in position.

6) Place the Left Top Log D)02-46 on the pin on Log

C)02-56 and on top of the cutout on Log A)02-43.

7) Place the notch in Center Log E)02-47 over Log B)02-

45 and across the cutout on Log A)02-43.

Cutout

Notch

8) Position notch in Front Right Log F)02-48 on Log

E)02-47 and push the bottom right edge against the

bracket on the burner tray and the front edge of the

rear burner.

Notch

Bracket

D)02-46

E)02-47

F)02-48

C)02-56

A)02-43

B)02-45

A)02-43

B)02-45

E)02-47

Logs A)02-43, C)02-56, and B)02-45 in position

C)02-56

5) Place the Middle Left Log C)02-56 on the two pins as

shown.

Regency U31-3 Gas Fireplace Insert 15

INSTALLATION

10) Place the embers and Rockwool on the exposed front

burner tray.

9) Place Front Left Log G)02-44 onto the 2 front pins as

shown.

G)02-44

F)02-48

B)02-45

Bracket

A)02-43

Front edge of

rear burner

The bottom right edge of Log F)02-48 must sit snugly against

the bracket and the front edge of the rear burner.

Side View

11) Separate platinum embers and place on and around

the embers and rockwool on the burner tray. Avoid

stacking platinum embers.

12) Test ﬁ re to ensure proper light off (make sure ﬂ ame

ﬂ ows smoothly from one end of burner to the other. If

there is any ﬂ ame hesitation, check that area for any

blockage of the burner port.

The "02" refer numbers (i.e. 02-43) are

molded into the rear of each log.

A) 02-43 D) 02-46 G) 02-48

C) 02-44 B) 02-56 F) 02-47 E) 02-45

16 Regency U31-3 Gas Fireplace Insert

INSTALLATION

Diagram 4

Diagram 5

Rear View: Trim Assembly

Diagram 2

Diagram 3

Rear View: Faceplate Assembly

Diagram 1

FACEPLATE & TRIM

INSTALLATION

1) Lay the faceplate panels ﬂ at, face down on

something soft so they don't scratch.

2) Take the top faceplate and align the holes in

it with the holes in the side panels. Using the

screws provided, attach from the top of the

panel (the holes in the top panel are slightly

larger than the holes in the side panel to

facilitate easier installation). Diagram 1.

Hint: Don't tighten the screws down com-

pletely at this point, continue on with steps

3 and 4 and do a trial ﬁ t to the unit. Make

any necessary adjustments and when it ﬁ ts

properly then tighten down the screws.

Hearth Trim Option: Hearth Trim is an

option that can be used to ﬁ nish off the

installation when the bottom of the ﬁ replace

is higher than the hearth or to raise the ﬁ re-

place. Attach the Hearth Trim to the bottom

of the faceplate side panels with the screws

provided. See Diagram 1.

3) Using the connectors provided, join the left

side trim (with the ON/OFF switch) to the

top trim. Diagram 2. Connect the right side

trim to the top trim.

4) Place the trim on the assembled faceplate

panels, aligning the wire connections from

the switches with the notch on the left side

panel.

5) Connect the fan switch wires by taking the

black and red wires with the male ends (in

the grey harness) and connect them with

the wire connectors from the fan speed

control.

6) Connect the ON/OFF switch wires by taking

the black and red wires with the female ends

and connect them to the ON/OFF switch.

7) Tuck the wires into the faceplate to keep

them away from the insert using the clip

provided. Attach the clip to the rear of the

faceplate to ensure that the wires do not

touch the side of the unit. Diagram 3.

8) The power cord should be run behind the

faceplate panel.

9) Attach the brass trim to the faceplate by

drilling a 1/8" hole through into the faceplate

using the hole in the trim as a guide. Fasten

the trim to the faceplate panels using the

plated screws. Diagram 4.

10) Attach the faceplate panels to the insert

body using the 4 remaining black screws.

Diagram 5.

11) Push the Regency logo plate into the two

holes in the bottom left corner of the face-

plate.

Regency U31-3 Gas Fireplace Insert 17

INSTALLATION

FLUSH FRONT

INSTALLATION

1) Install Logs before going on to the next step. See

the Log Installation instruction sheet or page 9.

2) Install the bottom glass trim by hooking the trim

into the lip on the ﬁ rebox base. The trim will not

ﬁ t into place if the glass is installed ﬁ rst.

3) Place the bottom of the ﬂ ush glass behind the

bottom glass trim.

FLUSH LOUVERS

MESH GUARD INSTALL

4) Secure the glass with the two glass clips at the

top corners of the glass. Secure glass clips with

the screws provided. Do not over tighten as this

could break the glass.

5) Slide in the top glass trim under the spring clips.

1) The Top Louver is held in place by friction

ﬁ t, if the Louver needs to be adjusted; bend

the bracket out as shown in the diagram.

Line up hooks on mesh guard with slots on unit.

Slide mesh guard down into slots until securely

in place.

2) Install the Spring Hinges on the left and right

side of the bottom of the Firebox using 2

screws per hinge.

Bottom Louver

Hinge

Location

3) Place the Bottom Louver near the hinge. Flip

hinge over the Bottom Louver and secure

using 3 screws.

Mesh Guard

18 Regency U31-3 Gas Fireplace Insert

INSTALLATION

WIRING DIAGRAM

This heater does not require a 120V A.C. supply for operation. In case of a power failure, the burner switch and the optional remote control/thermostat will

continue to operate. However, a 120V A.C. power supply is needed for the fan/blower operation.

CAUTION: Label all wires prior

to disconnection when servic-

ing controls. Wiring errors can

cause improper and dangerous

operation.

WARNING: Electrical Grounding Instructions

This appliance is equipped with a three pronged (grounding) plug for your protection against shock hazard and should

be plugged directly into a properly grounded three-prong receptacle. Do not cut or remove the grounding prong from

this plug.

Caution: Ensure that the wires do

not touch any hot surfaces and are

away from sharp edges.

Burner

OFF

Piezo

Ignitor

Pilot

Gas

Remote Transmitter

(Optional)

Thermostat

(Millivolt)

(Optional)

Remote

Receiver

(Optional)

(Millivolt)

ONOFF

Regency

Vent Spill

Switch

(Auto Reset)

Ground Green

Neutral

Live

Red Black Black

Black

Red

Brown

White

Minimum Convection

Air Temp. Switch

Ground

ON OFF

Rotary Speed

Control

120V AC

Fan

Lockwasher

Ground wire

from power cord

Ground wire

from fan

Star washer

nut

Star washer

Grounding

Lug Detail

"S.I.T" Valve

Gas

Pilot

Assembly

Gas Pilot

Thermopile

Thermocouple

Electrode

ValveTo

Regency U31-3 Gas Fireplace Insert 19

INSTALLATION

FULL SCREEN FRONT

1) Hold the full screen door up against the unit in order to make the

following wire connections.

Pull the ON/OFF connector wires from the ﬁ rebox and connect them

to the switch.

Connect the fan switch wires with the wire connectors from the fan

speed control. Place clips over wires and tuck into side trim.

2) Lift unit up slightly and push down on the corners of the Bottom Trim

Bracket and slide under unit. Unit should touch tabs on Bottom Trim

Bracket.

Bottom Trim Bracket

Push in Corners

3) Completely secure the full screen door to the unit by securing 4

screws to the Left and Right Side Trims.

NOTE: When mounting the full screen door to the unit, the inside

ﬂ ange of the side trims are to ﬁ t over the inner side of the unit ﬂ ange

and NOT next to the outer side of the unit ﬂ ange.

Inside ﬂ ange of Side Trim goes over

the inner side of the unit ﬂ ange.

20 Regency U31-3 Gas Fireplace Insert

INSTALLATION

1) Align the left side Faceplate Trim Bracket with the Firebox Flange

and secure using 2 screws as shown in diagram 1. Repeat for right

side.

Faceplate Trim

Bracket

Firebox

Flange

Blanking Plate

Flanges

3) Hold the Faceplate Trim up against the unit in order to make the

following wire connections.

Pull the ON/OFF connector wires from the ﬁ rebox and connect

them to the switch.

Connect the fan switch wires with the wire connectors from the fan

speed control. Place clips over wires and tuck into side trim.

for gas

connection Self-adhesive

wire clip

ON/OFF

switch

wires to

ON/OFF

switch wires to

Fan switch

connectors

Fan Speed

Switch

(Rear View)

IMPORTANT NOTE:

When using the Surround, the unit must be set 1" further into the ﬁ replace

than the standard faceplate installation. See the diagrams below for the

correct minimum ﬁ replace opening requirements.

16”

21”

29”

EXCALIBUR SURROUND

INSTALLATION

2) Align the cut-outs in the Blanking Plate with the pins located on the

inside top of the ﬁ rebox. Slide the Blanking Plate into position ensuring

it goes under the 2 ﬂ anges.

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Regency I31-NG3 Installation guide

Brand: Regency

Model: I31-NG3

Category: Fireplaces

Type: Installation guide

This manual is also suitable for

U31-LP3

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Regency I31-NG3 Installation guide

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Regency I31-NG3 Installation guide

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