Regency Fireplace Products Horizon HZO42-NG Quick start guide

WARNING:
Iftheinformationintheseinstructionsarenotfollowedexactly,
a fire or explosion may result causing property damage,
personal injury or loss of life.
FOR YOUR SAFETY
Do not store or use gasoline or other flammable vapours and
liquids in the vicinity of this or any other appliance.
Installation and service must be performed by a qualified
installer, service agency or the gas supplier.
FOR YOUR SAFETY
What to do if you smell gas:
Do not try to light any appliance
Donottouchanyelectricalswitch:
do not use any phone in your
building.
Immediatelycall yourgas supplier
from a neighbour's phone. Follow
the gas supplier's instructions.
If you cannot reach your gas
supplier, call the fire department.
FPI FIREPLACE PRODUCTS INTERNATIONAL LTD. 6988 Venture St., Delta, BC Canada, V4G 1H4
918-882f 09/11/13
Owners &
Installation Manual
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.
MODELS: HZO42-NG
HZO42-LP
Regency Horizon ™ HZO42 Outdoor
Gas Fireplace
WARNING: FOR OUTDOOR USE ONLY
www.regency-fire.com
WARNING:
Improper installation, adjustment, alteration, service or maintenance can cause injury or property
damage. Readtheinstallation,operatingandmaintenanceinstructionsthoroughlybeforeinstalling
or servicing this equipment.
Horizon HZO42 Product Video

2Regency Horizon™ HZO42 Gas Fireplace
2
To the New Owner:
Congratulations!
You are the owner of a state-of-the-art Gas Fireplace by REGENCY®. The Horizon™ HZO42
Outdoor fireplace has been designed to provide you with all the warmth and charm of a fire at the
flick of a switch. The Horizon™ HZO42 Outdoor fireplace has been approved by Warnock Hersey/
Intertek for both safety and efficiency. 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 Regency®Fireplace.
Horizon HZO42 Product Video
Regency Horizon
Gas Inserts Benefits Video

Regency Horizon™ HZO42 Gas Fireplace 33
3
TABLE OF CONTENTS
SAFETY LABEL
Copy of Safety Decal.....................................................4
DIMENSIONS
Unit Dimensions ............................................................5
INSTALLATION
Important Message ......................................................6
Before You Start ............................................................6
General Safety Information............................................6
Installation Checklist.....................................................7
Locating Your Gas Fireplace.........................................7
Outdoor appliance installation summary .......................8
Minimum Clearances to combustibles...........................9
Framing Dimensions....................................................10
Mantel Clearances.......................................................11
Non-Combustible Requirements .................................11
Finishing......................................................................12
High Elevation .............................................................13
Gas Line Installation....................................................13
Pilot Adjustment...........................................................13
Gas Pipe Pressure Testing..........................................13
880 S.I.T. Valve Description.........................................13
Aeration Adjustment ....................................................13
Unit Assembly Prior to Installation...............................14
Standoff Assembly...............................................14
Nailing Strips........................................................14
Drain Installation (Recommended)..............................15
Wall switch and battery installation..............................16
Wiring Diagram............................................................17
Inner panel installation.................................................18
Glass crystal installation .............................................19
volcanic stone installation ...........................................20
Optional Log Set Installation........................................21
Heat deflector installation............................................23
Faceplate installation...................................................24
Glass wind shield installation.......................................25
Weather cover installation / removal ...........................25
Operating Instructions .................................................31
Lighting Procedure ......................................................31
Shutdown Procedure...................................................31
First Fire ......................................................................31
Aeration Adjustment ....................................................31
Copy of Lighting Plate Instructions..............................32
MAINTENANCE
Maintenance Instructions.............................................33
Valve assembly Replacement .....................................34
PARTS
Main Assembly ............................................................37
Burner Assembly .........................................................38
Accessories.................................................................39
WARRANTY
Limited Warranty: ......................................................43

4Regency Horizon™ HZO42 Gas Fireplace
SAFETY LABEL
This is a copy of the label that accompanies each
HZO42 Outdoor Fireplace.We have printed a copy
of the contents here for your review.
NOTE: Regency®units are constantly being
improved. Check the label on the unit and if there is
a difference, the label on the unit is the correct one.
COPY OF SAFETY DECAL
For the State of Massachusetts, installation and
repair must be done by a plumber or gas fitter
licensed in the Commonwealth of Massachusetts.
For the State of Massachusetts, flexible connec-
tors 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.
DO NOT REMOVE THIS LABEL / NE PAS ENLEVER CETTE ÉTIQUETTE
364
364
FPI Fireplace Products International Ltd.
6988 Venture St.
Delta, BC, Canada V4G 1H4
Minimum Clearances to Combustibles /
Degagement Minimum De Materiaux Combustibles
Serial No./ No de serie
Listed: Certified for/Certifi e pour: Tested to:
OUTDOOR GAS FIREPLACE /
CANADA and U.S.A.
FOYER À GAZ EXTÉRIEUR
IAS 4-96 (US) / CGA CR97-003 (CAN)
4001172
é
CAN/CGA-2.17-M91 /
. NOT FOR USE WITH SOLID FUELS. / NE PAS UTILISER AVEC DES COMBUSTIBLES SOLIDE.
Made in Canada/ Fabrique au Canada
Duplicate S/N
ÉÉ é
QUIP A L'UISINE POUR GAZ PROPANE
CONCU POUR ETRE POELE: Mod le HZO42
PROPANE GAS: Model HZO42-LP
Minimum supply pressure Manifold pressure high Orifice size Maximum input Altitude Maximum supply pressure
NATURAL GAS: Model HZO42-NG
Pression d'allimentation minimum Pression à la tubulure d' chappement lev e Grandeur de l'injecteur D bit maximum selon l'altitude Pression d'allimentation maximum
Calorifique
ééé
é
14” WC/C.E. (3.49 kPa) 5" WC/C.E. (1.25 kPa)
WC/C.E.
44,500 Btu/h (13.04 kW) 3.5" (0.87 kPa) #29 DMS 0-4500 ft/pi (0-1372 m)
Pression d'allimentation minimum Pression à la tubulure d' chappement lev e Grandeur de l'injecteur D bit maximum selon l'altitude Pression d'allimentation maximum
Calorifique
ééé
é
14" WC/C.E. (3.49 kPa) 11” WC/C.E. (2.74 kPa)
WC/C.E.
43,500 Btu/h (12.74 kW) 10" (2.49 kPa) #47 DMS 0-4500 ft/pi (0-1372 m)
Minimum supply pressure Manifold pressure high Orifice size Maximum input Altitude Maximum supply pressure
D
E
F
A
B
C
Side Walls A 11” (279mm) B 36” (914mm) C 18”(457mm) D 12” (305mm) E 57" (1448mm) F 36" (914mm) Ceiling Min. Mantel Height Max. Mantel Depth Alcove Width Alcove Depth
The installation must conform with local codes or, in the absence of local codes, with The appliance, when installed, must be electrically grounded in accordance with local codes or, in the absence of local codes, with the Canadian Electrical Code, CSA C22.1 or with the National Electrical Code, ANSI/NFPA 70. This appliance is only for use with the type of gas indicated on the rating plate . See owner's manual for details. L'installation doit être conforme aux codes locaux ou, en l'absence de codes locaux, avec CAN/CSA-B149.1, gaz naturel et du propane ou du Code d'installation au ANSI Z223.1/NFPA54. L'appareil, une fois installé, doit être connecté électriquement à la terre conformément aux codes locaux ou, en l'absence de codes locaux, avec le Code canadien de l'électricité, CSAC22.1 ou avec le National Electrical Code,ANSI / NFPA 70. Cet appareil est à utiliser uniquement avec le type de gaz indiqué sur la plaque signalétique. Voir le manuel du propriétaire pour les détails.
CAN/CSA-B149.1, Natural Gas and Propane Installation Code or ANSI Z223.1/NFPA 54.
APPAREIL FONCTIONNANT AU NATURAL GAS CONCU POUR ETRE POELE: Mod le HZO42é
FOR OUTDOOR USE ONLY / POUR USAGE EXTÉRIEUR SEULEMENT 918-888b
HZO42-LPHZO42-NG

Regency Horizon™ HZO42 Gas Fireplace 5
DIMENSIONS
UNIT DIMENSIONS
41 - 11/16” (1059mm)
35 - 1/4” (895mm)
23 - 5/16” (592mm)
6 - 5/16” (160mm)
16 - 1/8” (410mm)
13 - 3/4” (349mm)
5/8” (16mm)
17” (432mm)
12 - 3/4” (324mm)
32 - 7/16” (824mm)
39 - ½” (1003mm)
15 - 9/16” (395mm)
10” (254mm)
43 - 11/16” (1110mm)
37 - 13/16” (960mm)

6Regency Horizon™ HZO42 Gas Fireplace
INSTALLATION
IMPORTANT MESSAGE
SAVE THESE
INSTRUCTIONS
The HZO42 Gas Fireplace must be installed in
accordance with these instructions. Carefully read
all the instructions in this manual first. Consult the
"authority having jurisdiction" to determine the need
for a permit prior to starting the installation. It is the
responsibility of the installer to ensure this fireplace
is installed in compliance with manufacturers
instructions and all applicable codes.
BEFORE YOU START
Safe installation and operation of this appliance
requires common sense, however, we are required
by the Canadian Safety Standards and ANSI
Standards to make you aware of the following:
GENERAL SAFETY
INFORMATION
1) The installation must conform with local
codes or, in the absence of local codes, with
CAN/CSA-B149.1, Natural Gas and Propane
Installation Code or CAN/CSA-B149.2, Propane
installation code the Natural Gas Fuel Code,
ANSI Z223.1/NFPA 54.
2) The appliance when installed, must be
electrically grounded in accordance with local
codes, or in the absence of local codes with the
Canadian Electrical Code CSA C22.1or with
the National Electrical Code, ANSI/NFPA 70.
3) See general construction and assembly
instructions.The appliance should be enclosed.
4) Inspect the burner before each use of the
appliance for blockage and any signs of
deterioration.
CHILDREN AND ADULTS SHOULD
BE ALERTED TO THE HAZARDS OF
HIGH SURFACE TEMPERATURES,
ESPECIALLY THE FIREPLACE GLASS
AND FACEPLATE, AND SHOULD STAY
AWAYTO AVOID BURNS OR CLOTHING
IGNITION.
THIS APPLIANCE SHALL BE USED
ONLY OUTDOORS IN A WELL-VENTI-
LATED SPACE AND SHALL NOT BE
USED IN A BUILDING,GARAGE OR ANY
OTHER ENCLOSED AREA.
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 IMPERATIVETHAT
CONTROL COMPARTMENTS,BURNERS
AND CIRCULATING AIR PASSAGEWAYS
OF THE APPLIANCE BE KEPT CLEAN.
ANY GUARD OR OTHER PROTECTIVE
DEVICE REMOVED FOR SERVICING
THE APPLIANCE MUST BE REPLACED
PRIORTO OPERATINGTHE APPLIANCE
WARNING: FAILURE TO INSTALL THIS
APPLIANCE CORRECTLY WILL VOID
YOUR WARRANTY AND MAY CAUSE A
SERIOUS FIRE.
CLOTHING OR OTHER FLAMMABLE
MATERIAL SHOULD NOT BE PLACED
ON OR NEAR THE APPLIANCE.
DO NOT USE THIS APPLIANCE IF
ANY PART HAS BEEN UNDER WATER.
IMMEDIATELY CALL A QUALIFIED
SERVICE TECHNICIAN TO INSPECT
THE APPLIANCE AND TO REPLACE
ANY PART OFTHE CONTROL SYSTEM
AND ANY GAS CONTROL WHICH HAS
BEEN UNDER WATER.
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 IFTHERE ARE AT RISK INDIVIDUAL
INTHE 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.
5) To prevent injury, do not allow anyone who is
unfamiliar with the operation to use the fireplace.
6) Wear gloves and safety glasses for protection
while doing required maintenance.
7) Maximum gas inlet pressure = 1/2 psig.
8) Under no circumstances should this appliance
be modified. Parts that have to be removed for
servicing should be replaced prior to operating
this appliance.
9) Installation and any repairs to this appliance
should be done by a qualified service person.
A professional service person should be called
to inspect this appliance annually. Make it a
practice to have all of your gas appliances
checked annually.
10) Under no circumstances should any solid fuels
(wood, paper, cardboard, coal, etc.) be used in
this appliance.
11) The appliance and its individual shutoff valve
must be disconnected from the gas supply
piping system during any pressure testing of
that system at test pressures in excess of 1/2
psi (3.5kPa).
The appliance must be isolated from the gas
supply piping system by closing its individual
manual shutoff valve during any pressure testing
of the gas supply piping system at test pressures
equal to or less than 1/2 psi (3.5 kPa).
12) The appliance area must be kept clear and
free of combustible materials, (gases and other
flammable vapours and liquids).
It is highly recommended to protect the
interior from moisture (rain, snow). Cover
the enclosure opening when not in use. This
fireplace is only for use with the type of gas
indicated on the rating plate. This fireplace
is not convertible for use with other gases,
unless a certified kit is used.
13) Cover must be removed when burner is in
operation.
14) When not using appliance for extended periods
of time - turn off gas supply.
Emissions from burning wood or gas could
contain chemicals known to the State of
California to cause cancer, birth defects or
other reproductive harm.

Regency Horizon™ HZO42 Gas Fireplace 7
INSTALLATION
LOCATING YOUR
GAS FIREPLACE
1) When selecting a location for your fireplace, ensure that the clearances are met.
2) This appliance must be installed in an open-air situation with natural ventilation, without stagnant
areas, where gas leakage and products of combustion are rapidly dispersed by wind and natural
convection.
3) Certain materials or items, when placed under or near the appliance, will be subjected to radiant
heat and could become damaged.
4) Typically an outdoor space is not enclosed but, any enclosure in which the appliance is used shall
comply with one of the following:
An enclosure with walls on all sides, but at least one permanent opening at ground level and no
overhead cover.
Within a partial enclosure that includes an overhead cover and no more that two walls.
Within a partial enclosure that includes an overhead cover and more than two walls, the following
shall apply:
• At least 25% of the total wall area is completely open, and
• At least 30% of the remaining wall area is open and unrestricted
INSTALLATION
CHECKLIST
1) Locate appliance:
a) Refer to "LocatingYour Gas fireplace" section
b) Clearances to Combustibles (Refer to
"Clearances" section)
c) Mantel Clearances (Refer to "Combustible
Mantel Clearances" section)
d) Framing & Finishing Requirements (Refer
to "Framing & Finishing" section)
2) Top Facing Support and Side Nailing Strips
(Refer to "Unit Assembly Prior to Installation"
Section). Note: Must be done before installing
unit into place.
3) Drain Installation.
4) Install ON/OFF switch - ensure it is in the OFF
position.
5) Make gas connections - test for leaks.
6) Install 4 "AA" batteries
7) Install standard and optional features. Refer to
the following sections:
a. Inner Panel
b. Glass Crystals
c. Pebble Installation (optional)
d. Garden Stone Installation (optional)
e. Log Installation (optional)
f. Glass Wind Shield Installation
g. Heat Deflector Installation
h. Faceplate Installation
i. Weather Cover Installation
8) Final check.
This includes:
1) Clocking the appliance to ensure the correct
firing rate (rate noted on label), after burning
appliance for 15 minutes.
2) If required, adjusting the primary air to ensure
that the flame does not carbon. First allow the
unit to burn for 15-20 min. to stabilize.
CAUTION: Any alteration to the product that
causes sooting or carboning that results in dam-
age is not the responsibility of the manufacturer.
30% or more in total of the remaining wall
area is open and unrestricted.
Open side at least 25% of total wall area
NOTE: In order to function correctly, these
types of appliances require at least 50% open
access for permanent ventilation/airflow.
Open ventilation/airflow space comes from
walls and roof/ceiling.
Open floor space around the unit must not be
considered ventilation/airflow space.
*SEE IMPORTANT INSTALLATION NOTES NEXT PAGE

8Regency Horizon™ HZO42 Gas Fireplace
INSTALLATION
• Never insulate around the body of the unit
• Excessive heat retention in the firebox will lead to component failure
and fireplace malfunction
• Excessive heat retention will also increase the risk of fire inside the
chase
• Heat retention can cause “Oil-canning” and damage the fireplace due
to overheating
• Do not build up a wall of any type in front or to the sides of the appli-
ance, higher than the firebox opening. This will create a pressure zone
at the firebox and will prevent the unit from venting
• This is an outdoor appliance with a built-in drain. This drain should be
installed and connected in all applications as per the instructions in
this manual
• Inadequate drainage will cause rust and reduce the life of your appli-
ance, this is not protected by warranty
• Outdoor units use the same consistent, reliable Electronic components
used in most Regency “E” units
• Installed correctly, these components will be subjected to far lower
temperatures than indoor units, which have been certified as safe from
heat etc
• Working gas pressures are as critical in outdoor products as they are
in indoor products, even more important in Electronic systems
• Unit shutting down intermittently
• Overheating of components leading to failure
• Lifting flame
• Poor flame package (i.e. all to one side, lazy flame)
• Failure to ignite
• Excess carbon
• Safety issues and concerns created from the byproducts of combus-
tion
• Outdoor appliances must be installed in: open-air situations with natu-
ral ventilation and without stagnant areas
• Any gas leakage and products of combustion need to be rapidly dis-
persed by wind and natural convection
• Typically outdoor spaces are not enclosed, however, failure to adhere
to installation guidelines, may cause the outdoor fireplace to be af-
fected by wind or air pressure inside the enclosure
• ANY enclosure in which the appliance is used shall comply with one of
the diagrams on the previous page.
• All walls + overhead cover = 100% total area
• One of four walls or full overhead area must be totally open, plus—one
of remaining walls must have a fixed opening
• All outdoor fireplaces/fire tables require total natural ventilation of 50%
open space
• Correct Working Gas pressure is critical on “E” units
• Wherever possible avoid locating on a flat wall in a tight corner
• Floor space doesn’t count as “open area”
• Install to the manual specs for framing and do not insulate unit or
enclosure
• Framing enclosure must at least meet minimum dimensional specs as
per the installation manual
• Only Regency approved media should be used in the firebox (i.e.
stones/glass)
• Be aware of pressure zones due to location (i.e. facing the ocean)
• Open walls and doorways to outside air are beneficial to the perfor-
mance of an outdoor appliance
• Fixed roof/ceiling open areas count towards the total open area overall
requirement
• Screens create 40% or more air restriction
• Screened areas are restrictions and reduce open air space, calculate
area based on a closed screen
• The biggest problems are created by lack of airflow for the appliance
• Outdoor fireplaces are often built-in systems and incorrect installation
can result in high repair costs
• Units must not be modified or altered in any way
• There is a common misconception that being outdoors, an Outdoor
Fireplace will function, regardless of circumstances,
• Outdoor fireplaces require the same amount of ventilation as indoor
units, often more
• Outdoor units require adequate ventilation to the atmosphere, which in
turn provides ongoing circulatory combustion air
• This type of Appliance Vents.
• All Outdoor Fireplace Products have the same need for Air/Oxygen,
and an ability to Vent
• Even though the appliance is outdoors, this doesn’t mean it is getting
adequate air
• Requirements are not specific to Regency units
• Read and follow critical location guidelines in this manual
• Don’t overlook the obvious
• Widen your margin for error
• Combustion always requires the same three elements
• Only the quantities and volumes change
IMPORTANT INFORMATION FOR OUTDOOR FIREPLACE INSTALLATIONS
IMPORTANT THINGS TO REMEMBER
ANTICIPATED ISSUES CAUSED BY
INCORRECT LOCATION OR INSTALLATION
OUTDOOR APPLIANCES REQUIRE VENTING
COMPONENTS IN OUTDOOR APPLIANCES
COMMON MISCONCEPTIONS REGARDING
OUTDOOR FIREPLACES
UNDERSTANDING OUTDOOR APPLIANCE
REQUIREMENTS
OUTDOOR APPLIANCE INSTALLATION SUMMARY

Regency Horizon™ HZO42 Gas Fireplace 9
INSTALLATION
Caution Requirements
The top, back and sides of the fireplace are defined by
standoffs. The metal ends of the standoff may NOT be
recessed into combustible construction.
WARNING
Fire hazard is an extreme risk
if these clearances (air space) to combustible materials are not
adhered to. It is of greatest importance that this fireplace be
installed only in accordance with these instructions.
MINIMUM CLEARANCES TO COMBUSTIBLES
The clearances listed below are Minimum distances unless otherwise stated:
A major cause of fires is failure to maintain required clearances (air space) to combustible materials. It is of the greatest importance that this
fireplace be installed only in accordance with these instructions.
F
E
D
A
C
B
HZO42 Clearance Requirements
Clearance: Dimension Measured From:
A: Sidewall 11" (203mm) Side of Fireplace Opening
B: Ceiling 36" (914mm) Top of Fireplace Opening
C: Mantel Height (min.) 18" (457mm) Top of Fireplace Opening
D: Mantel Depth (max.) 12" (304mm) From Wall
E: Alcove Width 57"(1148mm) Wall to Wall (Minimum)
F: Alcove Depth 36" (914mm) Front to Back Wall (Maximum)
Notes: 0" No Hearth Required
E
F
Alcove
A
B
WARNING:
When installing this appliance; do not cover or surround
with insulation.
This appliance can overheat and cause malfunction
and component failure, if covered, or partially covered.
If the appliance is installed inside a chase, insulation
must be installed on the walls of the chase, not on the
appliance.

10 Regency Horizon™ HZO42 Gas Fireplace
INSTALLATION
FRAMING DIMENSIONS
A
B
C
D
Metal Stud
on edge
G
F
Note: All other framing may
be of wood construction.
E
Framing
Dimensions Description HZO42
A Header Height 32-11/16” (30mm)
B Side Stud Width 42 - 3/16" (1072mm)
C Minimum framing depth 20" (508mm)
D Minimum Height to Combustibles 52 - 1/2" (1334mm)
E Minimum framing width 60" (1524mm)
F Corner Wall Depth 40 - 7/16" (1027mm)
G Corner Facing Wall Width 54 - 3/16" (1376mm)
H Gas Connection Opening Height 2" (51mm)
I Gas Connection Height 3-7/8 " (98mm)
J Gas Connection Inset 3/4" (73mm)
K Gas Connection Opening Width 3-7/8 " (98mm)
*Framing depth measurement is noted with the nailing strips set as far forward on the firebox as possible.
The nailing strips can be adjusted back up to 1” to allow for varying thicknesses in non-combustible
material & wall finishes.
I
H
J
J
K
Important Note: Two (2) ventilation grills are highly recommended for all enclosures.
This is to alleviate moisture and allow for air to circulate. Minimum recommended size: 20" sq (508 mm²) ea.

Regency Horizon™ HZO42 Gas Fireplace 11
INSTALLATION
Due to the extreme heat this fireplace emits, the mantel
clearancesare critical.Combustible mantel clearances from
top of front facing are shown in the diagram on the right.
Note: Ensurethepaintthat isusedonthe mantelandthe
facingis"heatresistant"orthepaintmaydiscolour.
Combustible Material
2
0
12 64
810
12" (305mm)
Standoff
Metal Stud
(On Edge)
0
14
Non-combustible
Facing
To Unit
Base
1" (25mm)
26-1/2” 18”
23”
10
20
26
Top of
Fireplace
Opening
11”
MANTEL CLEARANCES
NON-COMBUSTIBLE REQUIREMENTS
2-7/8”
(3mm) 6-9/16”
(167mm)
10-7/8”
(276mm)
16” (406mm)
38-1/16” (767mm)
Non-combustible
Material
Non-combustible Material
Non-combustible Material
7
43-11/16” (1110mm)

12 Regency Horizon™ HZO42 Gas Fireplace
INSTALLATION
FINISHING
IMPORTANT FINISHING DETAIL NOTE:
Before placing unit into final position - it is important to know the total thickness / height of finished hearth. The base of the fireplace should be
level or higher than the finished hearth height.
”
18”
41-1/2”
If material such as brick, stone, etc extends past the faceplate depth (1-1/2"), when finishing around the faceplate, the minimum opening dimensions
noted below must be adhered to ensuring for the removal of the faceplate and for the safe operation of this appliance.
For material such as brick, stone, etc that extend up to 1-1/2" , the minimum opening dimensions noted below must be adhered, when finishing around
the faceplate. This is to ensure the removal of the faceplate and for the safe operation of this appliance.
For facing material is over 1” (25mm)thick, use the outer cut out for your
faceplate template.
40 1/4”
18”
For facing material is under 1” (25mm) thick, use the inner cut out
to keep construction material out of the firebox.
16”
38”
HZO42
”
16”
38-1/16”
Unit shown without faceplate

Regency Horizon™ HZO42 Gas Fireplace 13
INSTALLATION
GAS PIPE PRESSURE
TESTING
The appliance must be isolated from the gas sup-
ply piping system by closing its individual manual
shut-off valve during any pressure testing of the
gassupply piping system attest pressures equal
to or less than 1/2 psig. (3.45 kPa). Disconnect
piping from valve at pressures over 1/2 psig.
The manifold pressure is controlled by a regulator
built into the gas control, and should be checked
at the pressure test point.
Note: To properly check gas pressure, both
inlet and manifold pressures should be
checked using the valve pressure ports
on the valve.
1) Make sure the valve is in the "OFF" position.
2) Loosen the "IN" and/or "OUT" pressure tap(s),
turning counterclockwise with a
1/8" wide flat screwdriver.
3) Attachmanometerto"IN"and/or"OUT"pressure
tap(s) using a 5/16" ID hose.
4) Lightthepilotandturnthevalveto"ON"position.
5) The pressure check should be carried out with
theunitburningandthesettingshouldbewithin
the limits specified on the safety label.
6) When finished reading manometer, turn off the
gas valve, disconnect the hose and tighten the
screw (clockwise) with a 1/8" flat screwdriver.
Note:Screwshouldbesnug,butdonotover
tighten.
AERATION ADJUSTMENT
The burner aeration is factory set but may need
adjusting due to either the local gas supply or
altitude. Open the air shutter for a blue flame or
close for a more yellow flame.
Minimum Air Shutter Opening:
1/8" NG
1/4" LP
Note: Anydamage dueto carboning resulting
from improperly setting the aeration
controlsisNOTcoveredunderwarranty.
HIGH ELEVATION
Thisunitisapprovedforaltitude0to4500ft.(CAN1
2.17-M91).
GAS LINE
INSTALLATION
Since some municipalities have additional local
codes it is always best to consult with your local
authorities and the CAN/CGA B149 installation
code.
For USAinstallations follow local codes and/or the
current National Fuel Gas Code, ANSI Z223.1.
When using copper or flex connectors use only
approved fittings. Always provide a union so that
gas lines can be easily disconnected for servicing.
Flare nuts for copper lines and flex connectors are
usually considered to meet this requirement.
NOTE: A shutoff / dante valve should be sup-
plied in or near the unit (or as per local codes)
for ease of servicing this appliance.
IMPORTANT: Always check for gas leaks with
a soap and water solution or gas leak detector.
Do not use open flame for leak testing.
HZO42 SYSTEM DATA
Max. Supply Pressure 14" WC (3.49 kpa)
Min. Supply Pressure 5" WC (1.25 kpa)
Manifold Pressure 3.5" WC (0.87 kpa)
Orifice Size #29 DMS
Maximum Input 44,500 Btu/h
(13.04 kW)
HZO42-LP SYSTEM DATA
Max. Supply Pressure 14" WC (3.49 kpa)
Min. Supply Pressure 11" WC (2.73 kpa)
Manifold Pressure 10" WC (2.49 kpa)
Orifice Size #47 DMS
Maximum Input 43,500 Btu/h
(12.74 kW) Note: If you have an incorrect flame pattern,
contactyourRegency®dealerforfurther
instructions.
Incorrectflamepatternwillhavesmall,probably
yellow flames, not coming into proper contact
with the rear burner or flame sensor.
Burner
Flame Sensor
Pilot Ignitor
PILOT ADJUSTMENT
Periodicallycheckthepilotflames.Correctflame
pattern has two strong blue flames: 1 flowing
around the flame sensor and 1 flowing across
the burner (it does not have to be touching the
burner).
880 S.I.T. VALVE
DESCRIPTION
1) Pilot adjustment
2) Outlet Pressure Tap
3) Inlet Pressure Tap
4) Pilot Outlet
5) Main Gas Outlet
6) Main Gas Inlet
2
1
3
4
5
6

14 Regency Horizon™ HZO42 Gas Fireplace
INSTALLATION
UNIT ASSEMBLY PRIOR TO INSTALLATION
NAILING STRIPS
The nailing strips come attached to the unit. There is 1 plate on each side
and 1 on the top that can be folded out as required.
Secure the top and side nailing strips to the framing.
The 6 Standoffs must be correctly positioned and attached before unit is slid
into position.
STANDOFF ASSEMBLY
The standoffs are shipped in a flat position and must be folded into shape
and attached.
1) Remove the standoffs from the fireplace.
2) Take each standoff and bend into the correct shape. Bend up at the bend
lines until the screw holes in the standoff and the pre-punched screw holes
on the fireplace top line up.
3) Attach the standoff securely to the unit with 2 screws per standoff (on
opposite corners).
Standoffs installed.
Nailing Strips
Note:
Depending on the material used for finishing, the nailing strips must
be set accordingly so that the finished material is always at the 1-1/2"
edge of the flange.
Finished
Material Nailing Strip Position
1/2" 1"
1" 1/2"
1-1/2" 0" (flush)
Unit
Nailing Strip
1” Forward
Unit
Nailing Strip
½” Forward
Unit
Nailing Strip
Flush w/unit
Factory Set

Regency Horizon™ HZO42 Gas Fireplace 15
INSTALLATION
DRAIN INSTALLATION (RECOMMENDED)
Although this fireplace is designed to operate outdoors safely, rain and other sources of moisture may enter the hearth area, which will cause water to col-
lect inside the base of the unit.
To prevent excessive water collection, the installer must provide a way to drain the water from the base of the unit by building or installing a
water collector before positioning the fireplace in its location.
INSTALLATION INSTRUCTIONS
When planning for the installation of the unit, the framing height must be increased by 3/4", when installing a drain pan. Additional space below the unit will
also be required to plumb a drain line.
1) Remove 4 screws to remove the rear access panel from the back of the unit - this will allow access to the drain hole at the base of the unit.
2) On the exposed drain hole (see location below), install a PVC 3/4" threaded coupling reducer going from the top of the pan, down through the hole.
Apply a silicone-based sealant around the base and threads before installation.
3) Holding the reducer coupling with a wrench, thread a 90°PVC elbow (from the underside of the unit) to the reducer until it is tight to the metal.
Note: To assure proper drainage, that fireplace must be installed on a leveled surface
4) Add additional piping to route the drain to an appropriate location.
Drain hole location at
base of the unit
Threaded
Reducer
(PVC)
Threaded
Elbow
@ 90°
(PVC)
Reducer and elbow can be purchased from your local
hardware store.
Cut notches into the top
of the coupling reducer to
prevent water pooling.
Rear access panel
Drain hole

16 Regency Horizon™ HZO42 Gas Fireplace
INSTALLATION
WALL SWITCH AND BATTERY INSTALLATION
(INCLUDED WITH UNIT)
The unit comes with low voltage wire and a battery extension wire installed.
1) Run supplied wire to desired location - to a max. of 9 feet.
2) Install supplied electrical box in desired location.
3) Remove center knock out from electrical box and install strain relief
(strain relief nut not required).
4) Route low voltage wire and battery extension wire through the strain
relief.
5) Connect low voltage wire to supplied switch, fasten switch to right side of
electrical box (polarity not important).
8) Place supplied gasket on top of electrical box.
9) Fasten cover to electrical box using supplied screws.
10) Place switch in OFF position until final installation is complete.
Center knock out
Strain Relief
6) Install supplied 4-AA batteries into the battery holder. Using velcro install
battery holder to the backside of the battery compartment door. Connect
battery terminal.
7) Using silicone, completely seal strain relief to protect from water or moisture.

Regency Horizon™ HZO42 Gas Fireplace 17
INSTALLATION
WIRING DIAGRAM
This heater does not require a 120V A.C. supply for operation. (Do not cut the ground terminal off under any circumstances.)
NOTE: 4 AA batteries must be installed in the battery pack to operate the burner switch.
Remove the protective coating from the following components before proceeding. Carefully follow stainless handling instructions on following page.
0.886.001
Proflame Valve
Standard Main On/Off Switch
or Optional Wall Switch
SureFire™ Switch
880
Proflame
880
Standard Wall Switch

18 Regency Horizon™ HZO42 Gas Fireplace
INSTALLATION
INNER PANEL INSTALLATION
Before installation, panels must be handled and cleaned as per instructions noted below:
Stainless Steel Panels
•Stainless panels must be inspected for scratches and dimples prior to installation. All claims to be recorded at this time.
Claims for damage after installation will not receive consideration.
•To protect the finish during installation and handling - cotton gloves MUST be worn at all times while handling the panels (even when
removing protective coating).
•Use a hair dryer or similar device to remove the protective coating from the panels.
•Stainless panels will discolor a little during normal operation.
This is normal and should not be considered a defect.
* All hand and finger marks MUST be cleaned off with a soft cloth and a stainless steel cleaner. Most stainless steel cleaners leave a film/
residue on the surface of the panels. Use an ammonia based cleaner (ie. glass cleaner) to remove this film before applying heat to the unit.
Failure to do this will result in burn stains on panels which you will be unable to remove. Not protected by product warranty.
1) Install the back panel first - to maneuver the panel into position - tilt
the top of the panel forward and position the bottom of the panel
in first. Use care - do not scratch the panel when clearing the pilot
hood.
2) Install a side panel next (not important which side goes in first).
Position the panel with the bend in the panel facing towards the
outside or wall of the unit. Position side panel and secure with a clip
and one screw.
3) Install other side panel next. Position side panel and secure with a
clip and one screw.
4) Final install - shown below.

Regency Horizon™ HZO42 Gas Fireplace 19
INSTALLATION
GLASS CRYSTAL INSTALLATION
SpreadtheGlassCrystalsor Stonesevenlyover theburner.Ensurethecrystals/stonesdo notoverlapexcessively asthiswill affectthe flamepattern.
IMPORTANT NOTE:
Only the supplied approved Glass Crystals and Stones are to be used with these fireplaces. Use of any other type of glass crystals or stones can
alter the unit's performance, any damage caused by the use of any unapproved glass or stones will not be covered under warranty.
When using Ceramic Spa/Volcanic Stones DO NOT cover burner ports or pilot light that lead to pilot flame.
Firebox (Around Burner) Packages
Unit Glass Crystals Pebbles
HZO42 3 lbs 1 package (3 x bags pebbles)
There are 2 optional packages to choose from to cover the firebox base:
1) Natural River Pebbles
2) Glass Crystals (4 colors available)
Spread the pebbles / crystals evenly on the exposed base of the firebox. Pebbles are NOT to be placed anywhere on the burner or over top of the Glass
Crystals or optional Stones.
IMPORTANT NOTE: Only the supplied and approved pebbles / glass crystals are to be used with these fireplaces. Use of any other type of pebbles, glass
crystals or other material can create a danger and will void the warranty.
BURNER PACKAGES
Unit *Glass Crystals Stones - Spa / Ceramic / Volcanic
HZO42 3 lbs 3 lb Glass + 35 Volcanic stones
NOTE: *Glass Crystals are not supplied with the unit. Must purchase separately - see quantities above.
Glass Crystals are available in 1lb and 5lb bags.

20 Regency Horizon™ HZO42 Gas Fireplace
INSTALLATION
VOLCANIC STONE INSTALLATION
OUTDOOR VOLCANIC STONE BURNER PACKAGES
Unit Volcanic Stones
Ivory/Tan
Volcanic Stones
Slate/Grey
White Garden Stones
HZO42/HZO42 (AUS) 35 stones w/3lbs glass 35 volcanic stones w/3lbs glass 50 garden stones w/3lbs glass (AUS Only)
PTO30 */ Plateau Series 50 stones w/5lbs glass 50 volcanic stones w/5lbs glass
PTO60 100 stones w/10lbs glass 100 stones w/10lbs glass
NOTE: *Basalt Volcanic stones are measured by weight not quantity. Each bag contains 15lbs
of stones, however the exact quantity and size will vary.
Size varies between 2" - 3".
Volcanic Stones + Glass Crystals
For the PTO30, PTO60
& Plateau Series only
Volcanic Stones Ivory /Tan + Glass Crystals
For the HZO42 & HZO42AUS
only
Volcanic Stones Slate /Grey + Glass Crystals
For the HZO42 & HZO42AUS
only
Evenly spread the glass crystals and volcanic stones over the burner. Ensure the stones do not overlap too much as this will effect the flame
pattern.
IMPORTANT NOTE:
Only the supplied approved Volcanic Stones are to be used with these fireplaces. Use of any other type of stones can alter the unit's performance,
any damage caused by the use of any unapproved glass or stones will not be covered under warranty.
When using Volcanic Stones DO NOT cover burner ports or pilot light that lead to pilot flame. Ensure the stones do not overlap excessively as this
will effect the flame pattern.