Regency Horizon HZ54 Quick start guide

WARNING:
If the information in these instructions are not followed exactly,
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 vapors 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
Do not touch any electrical switch:
do not use any phone in your
building.
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 fire department.
FPI FIREPLACE PRODUCTS INTERNATIONAL LTD. 6988 Venture St., Delta, BC Canada, V4G 1H4
918-751a
Regency Horizon™HZ54
Gas Fireplace
10/31/08
Owners &
Installation Manual
www.regency-fire.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.
MODELS: HZ54-NG Natural Gas
HZ54-LP Propane

HZ54 Regency HorizonTM Gas Fireplace
2
To the New Owner:
Congratulations!
You are the owner of a state-of-the-art Gas Fireplace by REGENCY®. The HZ54 has been
designed to provide you with all the warmth and charm of a wood fireplace at the flick of a
switch. The model HZ54 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.
MANUFACTURED MOBILE HOME REQUIREMENTS
INFORMATION FOR MOBILE/MANUFACTURED HOMES AFTER FIRST SALE
This Regency®product has been tested and listed by Warnock Hersey/Intertek as a Direct Vent Wall Furnace to the following
standards: VENTED GAS FIREPLACE HEATERS ANSI Z21.88a-2007 / CSA 2.33a-2007 and GAS-FIRED APPLIANCES FOR
USE AT HIGH ALTITUDES CAN / CGA 2.17-M91.
This Direct Vent System Appliance must be installed in accordance with the manufacturer's installation instructions and the
Manufactured Home Construction and Safety Standard, Title 24 CFR, Part 3280, or the current Standard of Fire Safety Criteria for
Manufactured Home Installations, Sites, and Communities ANSI/NFPA 501A, and with CAN/CSA Z240-MH Mobile Home Standard
in Canada.
This appliance installation must comply with the manufacturer's installation instructions and local codes, if any. In the absence of
local codes follow the current National Fuel Gas Code, ANSI Z223.1 and the current National Electrical Code ANSI/NFPA 70 in the
U.S.A., and the current CAN/CGA B149 Gas Installation Code and the current Canadian Electrical Code CSA C22.1 in Canada.
This appliance comes equipped with a dedicated #8 Ground Lug for attachment of the ground wire to the steel chassis as applicable
to local codes.
The appliance, when installed, must be electrically grounded in accordance with local codes or, in the absence of local codes, with
the National Electrical Code, ANSI/NFPA 70, or the Canadian Electrical Code, CSA C22.1.
This appliance may only be installed in an aftermarket permanently located, manufactured (U.S.A only) or mobile home, where not
prohibited by local codes.
This appliance can only be used with the type of gas indicated on the rating plate. This appliance is not convertible for use with
other gases.
Ensure that structural members are not cut or weakened during installation.

HZ54 Regency HorizonTM Gas Fireplace 3
TABLE OF CONTENTS
SAFETY LABEL
Copy of Safety Decal.....................................................4
REQUIREMENTS
MA Code - CO Detector.................................................5
DIMENSIONS
Unit Dimensions ............................................................6
Faceplate & Door Frame Overlay Dimensions..............6
INSTALLATION
Important Message ......................................................7
Before You Start ............................................................7
General Safety Information............................................7
Installation Checklist......................................................8
Locating Your Gas Fireplace .........................................8
Clearances ....................................................................9
Non-Combustible Requirements ...................................9
Mantel Clearances.......................................................10
Mantel Leg Clearances................................................10
Framing & Finishing..................................................... 11
Unit Assembly Prior To Installation ..............................13
Top Standoff Assembly ........................................13
Side Nailing Strips ...............................................13
Venting Introduction.....................................................13
Vent Restrictor Position ...............................................14
Exterior Vent Termination Requirements .....................15
Venting Arrangements ................................................16
Horizontal Termination (Flex)...............................16
Rigid Pipe Venting Systems ........................................17
Basic Horizontal & Vertical Terminations .............17
5” x 8” Rigid Pipe Cross Reference Chart ...................18
Allowable Horizontal Terminations for HZ54-NG.........20
Allowable Horizontal Terminations for HZ54-LP..........21
Allowable Vertical Terminations for HZ54-NG .............24
Allowable Vertical Terminations for HZ54-LP ..............25
Unit Installation with Horizontal Termination................26
Unit Installation with Vertical Termination ....................27
Unit Installation............................................................28
Horizontal Termination with Flex Vent System ............28
High Elevation .............................................................29
Gas Line Installation....................................................29
Pilot Adjustment...........................................................29
Gas Pipe Pressure Testing..........................................29
S.I.T. Valve Description................................................29
Aeration Adjustment ....................................................30
Wiring Diagram ...........................................................30
Optional Wall Thermostat ...........................................31
Optional Remote Control.............................................31
Optional Wall Switch....................................................31
GT Remote Features...................................................32
GT Remote Wiring Diagram ........................................32
Optional Stainless Steel Panel Installation..................33
Glass Crystals or Optional Ceramic Stones ................34
Installation On Burner..................................................34
Optional Pebble Installation.........................................34
Faceplate & Door Frame Overlay Installation..............35
OPERATING INSTRUCTIONS
Operating Instructions .................................................37
First Fire ......................................................................37
Lighting Procedure ......................................................37
Shutdown Procedure...................................................37
Normal Operating Sounds of Gas Appliances.............37
Copy of Lighting Plate Instructions..............................38
MAINTENANCE
Maintenance Instructions.............................................39
General Vent Maintenance..........................................39
Thermopile / Thermocouple.........................................39
Glass Gasket...............................................................39
Glass Door...................................................................39
Glass Replacement .............................................39
Glass Door Removal ...................................................40
DC Spark Box Battery Replacement ...........................41
DC Spark Box Replacement........................................41
Valve Tray Replacement..............................................42
Instructions for HZ54-NG unit only. .............................43
Instructions for HZ54-LP unit only. ..............................44
PARTS LIST
Main Assembly ............................................................45
Accessories .................................................................46
WARRANTY
The Warranty: Limited Lifetime ...................................47

HZ54 Regency HorizonTM Gas Fireplace
4
INSTALLATION
SAFETY LABEL
This is a copy of the label that accompanies
each HZ54-NG and HZ54-LP Direct Vent Gas
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
gasfitter licensed in the Commonwealth of
Massachusetts.
For the State of Massachusetts, flexible
connectors shall not exceed 36 inches in
length.
For the State of Massachusetts, the appli-
ances 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.

HZ54 Regency HorizonTM Gas Fireplace 5
INSTALLATION
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.
(c) MANUFACTURER REQUIREMENTS - GAS EQUIPMENT VENTING SYSTEM PROVIDED. When the manufacturer of Product
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)

HZ54 Regency HorizonTM Gas Fireplace
6
INSTALLATION
DIMENSIONS
FACEPLATE & DOOR FRAME OVERLAY DIMENSIONS
UNIT DIMENSIONS

HZ54 Regency HorizonTM Gas Fireplace 7
INSTALLATION
10) Be aware of electrical wiring locations in walls
and ceilings when cutting holes for termina-
tion.
11) Under no circumstances should this appliance
be modified. Parts that have to be removed
for servicing should be replaced prior to
operating this appliance.
12) Installation and any repairs to this appliance
should be done by an authorized service
person.Aprofessional service person should
be called to inspect this appliance annually.
Make it a practice to have all of your gas
appliances checked annually.
13) Do not slam shut or strike the glass door.
14) Under no circumstances should any solid
fuels (wood, paper, cardboard, coal, etc.) be
used in this appliance.
15) The appliance area must be kept clear and
free of combustible materials, (gases and
other flammable vapours and liquids).
Emissions from burning wood or gas could
contain chemicals known to the State of
California to cause cancer, birth defects or
other reproductive harm.
INSTALLATION
IMPORTANT MESSAGE
SAVE THESE
INSTRUCTIONS
TheHZ54 Direct Vent 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:
YOUNG CHILDREN SHOULD BE
CAREFULLY SUPERVISED WHEN
THEY ARE IN THE SAME ROOM AS
THE APPLIANCE.
CLOTHING OR OTHER FLAMMABLE
MATERIALSHOULDNOTBEPLACED
ON OR NEAR THE APPLIANCE.
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.
CHILDREN AND ADULTS SHOULD BE
ALERTED TO THE HAZARDS OF HIGH
SURFACE TEMPERATURES, ESPE-
CIALLY THE FIREPLACE GLASS, AND
SHOULD STAYAWAY TOAVOID BURNS
OR CLOTHING IGNITION.
GENERAL SAFETY
INFORMATION
1) The appliance installation must conform
with local codes or, in the absence of local
codes, with the current Canadian or National
Gas Codes, CAN1-B149 or ANSI Z223.1
Installation Codes.
2) The appliance when installed, must be
electrically grounded in accordance with
local codes, or in the absence of local codes
with the current National Electrical Code,
ANSI/NFPA 70 or CSA C22.1 Canadian
Electrical Code.
3) See general construction and assembly
instructions. The appliance and vent should
be enclosed.
4) This appliance must be connected to the
specified vent and termination cap to the
outside of the building envelope. Never vent
to another room or inside a building. Make
sure that the vent is fitted as per Venting
instructions.
5) Inspect the venting system annually for
blockage and any signs of deterioration.
6) Venting terminals shall not be recessed into
a wall or siding.
7) Any safety glass removed for servicing
must be replaced prior to operating the
appliance.
8) To prevent injury, do not allow anyone who
is unfamiliar with the operation to use the
fireplace.
9) Wear gloves and safety glasses for protection
while doing required maintenance.

HZ54 Regency HorizonTM Gas Fireplace
8
INSTALLATION
INSTALLATION
This includes:
1) Clocking the appliance to ensure the correct
firing rate (rate noted on label 41,500
Btu/h (NG), 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 damage is not the responsibility of the
manufacturer.
LOCATING YOUR
Diagram 1.
A) Flat on Wall
B) Flat on Wall Corner
C) Recessed into Wall/Alcove
D) Corner
Diagram 1
GAS FIREPLACE
1) When selecting a location for your fireplace,
ensure that the clearances are met.
2) The appliance must be installed on a flat,
solid, continuous surface For example a
wood, metal or concrete floor or in a raised (on
the wall) application. The appliance must be
installed on a metal or wood panel extending
the full width and depth of the appliance.
3) The HZ54 Direct Vent Gas Fireplace can be
installed in a recessed position or framed
out into the room as in A, B, C and D. See
7) Test Gas Pressure (Refer to "Gas Pipe Pres-
sure Testing" section).
8) Install standard and optional features. Refer
to the following sections:
a) Glass Crystals/ Optional Ceramic
Stones
b) Optional Firebox Base Pebbles
c) Optional Stainless Steel Reflective
Panels
d) Faceplate / Door Frame Overlay
e) Remote Control or Wall Thermostat
9) Wall Mounted ON/OFF Switch:
Use the toggle wall switch supplied with the
manual package. Use of a “decor” switch
causes higher resistance which is a problem
on gas fireplaces.
10) Final check.
Before leaving this unit with the customer, the
installer must ensure that the appliance is firing
correctly and operation fully explained to
customer.
INSTALLATION
CHECKLIST
1) Locate appliance
a) Room location (Refer to "Locating Your
Gas fireplace" section)
b) Clearances to Combustibles (Refer to
"Clearances" section)
c) Mantle Clearances (Refer to "Mantel
Clearances" section)
d) Framing & Finishing Requirements (Refer
to "Framing & Finishing" section)
e) Venting Requirements (Refer to "Venting"
section)
2) Assemble Top and Side Standoffs (Refer to
"Unit Assembly Prior to Installation).
3) Slide unit into place.
4) Install vent (Refer to "Venting Arrangement"
sections).
5) Make gas connections (Refer to "Gas Line
Installation section).
6) Test the pilot (Refer to "Pilot Adjustment"
section).
4) This appliance is Listed for bedroom
installations using the standard Remote
(millivolt thermostat system). Some areas
may have further requirements, check local
codes before installation.
5) The HZ54 Direct Vent Gas Fireplace is
approved for alcove installations, see
"Clearances" section for details.
6) We recommend that you plan your installation
on paper using exact measurements for
clearances and floor protection before
actually installing this appliance. Have an
authorized inspector, dealer, or installer
review your plans before installation.
Note: For vent terminations refer to
"Exterior Vent Termination Locations"
section.

HZ54 Regency HorizonTM Gas Fireplace 9
INSTALLATION
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 and vent
system be installed only in accordance with these instructions.
CLEARANCES
The clearances listed below are Minimum distances unless otherwise stated:
A major cause of chimney related fires is failure to maintain required clearances (air space) to combustible materials. It is of the greatest
importance that this fireplace and vent system be installed only in accordance with these instructions.
F
B
E
D
A
Installed Close
to Floor
Clearance: Dimension Measured From:
A: Mantel Height (min.) 20" (508mm) Top of Fireplace Opening
B: Sidewall (on one side) 4" (102mm) Side of Fireplace Opening
C: Ceiling
(room and/or alcove) 40-7/8" (1038mm) Top of Fireplace Opening
D: Mantel Depth (max.) 13" (330mm) 30" Above Fireplace Opening
E: Alcove Width 83" (2108mm) Sidewall to Sidewall (Minimum)
F: Alcove Depth 36" (914mm) Front to Back Wall (Maximum)
F
B
C
Installed Close
to Ceiling
NON-COMBUSTIBLE REQUIREMENTS
Flue Clearances to Combustibles
Horizontal - Top 3"
Horiztonal - Side 2"
Horiztonal - Bottom 2"
Vertical 2"
Passing through wall/
floor/ceiling - when
firestop is used.
1-1/2"

HZ54 Regency HorizonTM Gas Fireplace
10
INSTALLATION
INSTALLATION
MANTEL CLEARANCES
Note: Ensure the paint that is used on the mantel
and the facing is "heat resistant" or the
paint may discolour.
MANTEL LEG CLEARANCES
Combustible mantel leg clearances as per diagram:
Drywall
2
0
12 64
810
Top of
Fireplace
Opening
13" (330mm)
3 ½" (89mm)
Standoff
Metal Stud
(On Edge)
0
14
Non-combustible
Facing
To Unit
Base Legs
1" (25mm)
30”
20”
21”
28-1/8”
Due to the extreme heat this fireplace emits, the
mantel clearances are critical. Combustible mantel
clearances from top of front facing are shown in the
diagram on the right.
Note: A non-combustible mantel may be
installed at a lower height if the framing
is made of metal studs covered with a
non-combustible board.

HZ54 Regency HorizonTM Gas Fireplace 11
INSTALLATION
INSTALLATION
Note: When constructing the framed opening, please ensure there
is access to install the gas lines when the unit is installed.
2) For exterior walls, insulate the enclosure to the same degree as the
rest of the house, apply vapour barrier and drywall, as per local instal-
lation codes. (Do not insulate the fireplace itself.)
WARNING: Failure to insulate and add vapor barriers to the inside
of the exterior wall will result in operational and performance
problems including, but not limited to: excessive condensation
on glass doors, poor flame package, carbon, blue flames etc.
These are not product related issues.
3) The unit does not have to be completely enclosed in a chase. You
must maintain clearances from the vent to combustible materials: See
"Clearances" section. Combustible materials can be laid against the
side and back standoffs and the stove base.
4) Non-combustible material (ie. tile, slate, etc) may be brought up to and
overlap the unit (top and bottom) ensuring that the maximum thickness
does not go beyond the 1-1/2" as shown in the diagram below. The
faceplate will not be able to be mounted if material is beyond 1-1/2".
FRAMING & FINISHING
1) Frame in the enclosure for the unit with framing material.
IMPORTANT: Header must be metal stud. All other framing may
be of combustible type such as 2x4 / 2x6 framing materials.
5) If material such as brick, stone, etc extends past the faceplate depth,
when finishing around the faceplate, the minimum opening dimen-
sions noted below must be adhered to ensuring for the removal of the
faceplate.

HZ54 Regency HorizonTM Gas Fireplace
12
INSTALLATION
Framing
Dimensions Description HZ54
A Framing Height 46-5/8” (1184mm)
B Framing Width 60” (1524mm)
C*Framing Depth*22” (559mm)
D Minimum Height to Combustibles 51” (1295mm)
E Corner Wall Depth 72" (1829mm)
F Corner Facing Wall Width 101-7/8 (2586mm)
G Vent Centerline Height 44” (1118mm)
H Non-combustible facing height 20” (508mm)
I Gas Connection Opening Height 1-1/2” (38mm)
J Gas Connection Height 4” (102mm)
K Gas Connection Inset 7-1/4” (184mm)
L Gas Connection Opening Width 3-1/4” (83mm)
*Framing depth measurement is noted with the side nailing strips set as far forward on the firebox as possible.
The side nailing strips can be adjusted back up to 1” to allow for varying thicknesses in non-combustible mate-
rial & wall finishes.
INSTALLATION

HZ54 Regency HorizonTM Gas Fireplace 13
INSTALLATION
SIDE NAILING STRIPS
The side and top 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.
Nailing Strips
UNIT ASSEMBLY
PRIOR TO
INSTALLATION
The Top Facing Support, the Side Nailing Strips and the 2 Top Standoffs
must be correctly positioned and attached to the top before unit is
slipped into position.
TOP STANDOFF ASSEMBLY
The top standoffs are shipped in a flat position and must be folded into
shape and attached.
1) Remove the standoffs from the fireplace top.
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 top with 2 screws per standoff
(on opposite corners).
Nailing Strips shown folded out.
VENTING INTRODUCTION
The HZ54 uses the "balanced flue" technology Co Axial system. The
inner liner vents products of combustion to the outside while the outer
liner draws outside combustion air into the combustion chamber thereby
eliminating the need to use heated room air for combustion and losing
warm room air up the chimney.
Note: These flue pipes must not be connected to any other
appliance.
The gas appliance and vent system must be vented directly to the outside
of the building, and never be attached to a chimney serving a separate solid
fuel or gas burning appliance. Each direct vent gas appliance must use
it's own separate vent system. Common vent systems are prohibited.
IMPORTANT NOTE
Framing depth measurement is noted with the
side nailing strips set as far forward on the
firebox as possible. The side nailing strips can
be adjusted back up to 1” to allow for varying
thicknesses in non-combustible material & wall
finishes.
INSTALLATION

HZ54 Regency HorizonTM Gas Fireplace
14
INSTALLATION
INSTALLATION
Vent restriction is required for certain venting installations, see the diagrams in the "Venting
Arrangements" section to determine if they are required for your installation.
The Vent Restrictor plate is located on the inside top of the firebox.
To set the vent restriction as indicated in the venting arrangements diagrams, refer to the following instructions;
1) Remove the glass door.
2) Remove the screws that hold the vent restrictor plate in place.
3) Adjust the vent restrictor plate to the required vent restrictor position as per the diagrams shown.
4) Once the vent restrictor plate is in the required position, secure with screws.
VENT RESTRICTOR POSITION
Vent Restrictor Settings for HZ54-NG Vent Restrictor Settings for HZ54-LP
4.25”
3”
2”
Vent Restrictor Set 1
Factory Set Vent Restrictor
(No adjustment required)
Vent Restrictor Set 2
Vent Restrictor Set 3
4.25”
2”
1”
Vent Restrictor Set 1
Factory Set Vent Restrictor
(No adjustment required)
Vent Restrictor Set 3
Vent Restrictor Set 4

HZ54 Regency HorizonTM Gas Fireplace 15
INSTALLATION
EXTERIOR VENT TERMINATION REQUIREMENTS
INSTALLATION
A= Clearance above grade, veranda, porch, deck, or balcony *(min. 12"/30cm)
B= Clearance to window or door that may be opened *(12"/30cm) #(9"/23cm)
C= Clearance to permanently closed window *(min. 12"/30cm)
D= Vertical clearance to ventilated soffit located above the terminal within a horizontal distance of (24"/60cm) from the centerline of the terminal
(min. 24"/60cm) check with local code.
E= Clearance to unventilated soffit (min. 24"/60cm)
F= Clearance to outside corner: with AstroCap Termination Cap (min. 13"), with Dura-Vent Termination Cap (13")
G= Clearance to inside corner: with AstroCap Termination Cap (min. 13"), with Dura-Vent Termination Cap (13")
H= Not to be installed above a meter/regulator assembly within (3'/90cm) horizontally from the centerline of the regulator.
J= Clearance to service regulator vent outlet *(min. 36"/90cm)
K= Clearance to non-mechanical air supply inlet to building or the combustion air inlet to any other appliance *(12"/30cm) #(9"/23cm)
L= Clearance to a mechanical air supply inlet *(min. 72"/1.8m)
#3' (91cm) above if within 10' (3m) horizontally.
M= Clearance above paved sidewalk or a paved driveway located on public property *(min. 84"/2.1m)
N= Clearance under veranda, porch, deck, or balcony *(min. 24"/60cm)
Note:
- Excluding direct vent or non-condensing appliances, a vent shall not terminate directly above a sidewalk or paved driveway which is located
between two single family dwellings and serves both dwellings.
- Only permitted if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the floor.
- If the vent termination is accessible, a certified guard shall be installed.
* As specified in CGA B149 Installation Code. Note: Local codes or regulations may require different clearances.
# In accordance with the current ANSI Z223.1/NFPA 54, Natioinal Fuel Gas Code.

HZ54 Regency HorizonTM Gas Fireplace
16
INSTALLATION
INSTALLATION
VENTING ARRANGEMENTS
HORIZONTAL TERMINATION (FLEX)
Regency®Direct Vent System
These venting systems, in combination with the HZ54, have been tested and listed as a direct vent system by Warnock Hersey/Intertek. The location
of the termination cap must conform to the requirements in the Vent Terminal Locations diagram from the "Exterior Vent Termination Locations"
section.
FPI Direct Vent (Flex) System Termination Kits include all the
parts needed to install the HZ54 using a flexible vent.
Notes:
1) Liner sections should be continuous without any joints
or seams.
2) Only Flex pipe purchased from FPI may be used for Flex
installations.
3) Horizontal vent must be supported every 3 feet.
4) A wall thimble is mandatory for all horizontal terminations
due to high temperatures.
FPI Kit # Length Contains:
#946-615 4 Feet 1) 8” flexible liner (Kit length)
2) 5” flexible liner (Kit length)
3) spring spacers
4) thimble
5) AstroCap termination cap
6) screws
7) tube of Mill Pac
8) plated screws
9) S.S. screws #8 x 1-1/2” drill point
10) vinyl siding standoff
#946-618 6 Feet
#946-616 10 Feet

HZ54 Regency HorizonTM Gas Fireplace 17
INSTALLATION
RIGID PIPE VENTING SYSTEMS
BASIC HORIZONTAL & VERTICAL TERMINATIONS
Rigid Pipe Vent Systems offer a complete line of
component parts for installation of both horizontal
and vertical installations. Many items are offered in
decorative black, as well as galvanized finish.
The minimum components required for a basic
Horizontal Termination are:
1 AstroCap XL Termination Cap
1 90oElbow
1 Rigid Pipe Adaptor
1 Wall Thimble
1 Length of rigid pipe to suit wall thickness
The minimum components required for a basic
Vertical Termination are:
1 Vertical Termination Cap
1 Rigid Pipe Adaptor
1 Lengths of pipe to adequately
penetrate roof
1 Ceiling Firestop
1 Flashing
1 Storm Collar
Wall thickness is measured from the back
standoffs to the inside mounting surface of
termination cap. For siding other than vinyl furring
strips may be used, instead of the vinyl siding
standoff, to create a level surface to mount the
vent terminal. The Terminal must not be recessed
into siding. Measure the wall thickness including
furring strips.
If a Vinyl Siding Standoff is required (it must be
used with vinyl siding), measure to outside surface
of wall without siding and add 2 inches.
When using Rigid Vent other than
Simpson Dura-Vent, 3 screws must be
used to secure rigid pipe to adaptor.
The FPI AstroCap XLTM is certified for installations using FPI venting systems as well as Simpson Dura-Vent®Direct Vent Pro and Selkirk Direct-Temp.
AstroCap XLTM is a proprietary trademark of FPI Fireplace Products International Ltd. Dura-Vent® and Direct Vent are registered and/or proprietary trade-
marks of Simpson Dura-Vent Co. Inc.
This product has been evaluated by Intertek
for using a Rigid Pipe Adaptor in conjunction
with Simpson DV Pro, Metal-Fab Sure-Seal
and Selkirk Direct-Temp systems. Use of these
systems with the Rigid Pipe adaptor is deemed
acceptable and does not affect the Warnock
Hersey/Intertek listing of components.
WARNING:
Do not combine venting components from
different venting systems.
Exception: However, use of the the AstroCap
XLTM is acceptable with all systems.
INSTALLATION
Alternate
Horizontal Termination
Caps
Part # 5DT-ST14 (14")
Part # 5DT-ST36 (36")

HZ54 Regency HorizonTM Gas Fireplace
18
INSTALLATION
INSTALLATION
5” X 8” RIGID PIPE CROSS REFERENCE CHART
Components from different Manufacturers may not be mixed. Not All Rigid Pipe components are available directly from FPI.

HZ54 Regency HorizonTM Gas Fireplace 19
INSTALLATION
INSTALLATION

HZ54 Regency HorizonTM Gas Fireplace
20
INSTALLATION
VENTING ARRANGEMENTS
ALLOWABLE HORIZONTAL TERMINATIONS FOR HZ54-NG
The diagram shows all allowable combinations of vertical runs with horizontal terminations, using one 90o(two 45o elbows equal one 90oelbow).
Note: Must use optional rigid pipe adapter (Part# 770-994) when using Rigid Pipe Venting Systems.
• Maintain clearances to combustibles as listed in "Clearances" section
• Horizontal vent must be supported every 3 feet.
• Firestops are required at each floor level and whenever passing through a wall.
• A wall thimble is mandatory for all horizontal terminations due to high temperatures.
VENT RESTRICTOR SETTING:
Vent restrictor factory set, no adjustment required unless otherwise indicated.
Refer to the "Vent Restrictor Position" section for details on how to change the vent restrictor from the factory setting of Set 1 to
Set 2 or Set 3 if required.
Note: Regency®Direct Vent System (Flex) is only approved for horizontal terminations.
INSTALLATION