Heat & Glo MEZZO-1000-AU User manual

1
Heat & Glo • MEZZO-1000-AU, MEZZO-1300-AU, MEZZO-1300ST-AU, MEZZO-1600-AU Installation Manual • 2304-970 Rev. D • 3/15
Models:
Installation Manual
Installation and Appliance Setup
INSTALLER: Leave this manual with party responsible for use and operation.
OWNER: Retain this manual for future reference.
NOTICE: DO NOT discard this manual!
• DO NOTstoreorusegasolineorotheram-
mablevaporsandliquidsinthevicinityofthis
oranyotherappliance.
• Whattodoifyousmellgas
- DO NOTtrytolightanyappliance.
- DO NOTtouchanyelectricalswitch.DO
NOTuseanyphoneinyourbuilding.
- Leavethebuildingimmediately.
- Immediately call your gas supplier from
aneighbor’sphone.Followthegassup-
plier’sinstructions.
- Ifyoucannotreachyourgassupplier,call
theredepartment.
• Installationandservicemustbeperformed
byaqualiedinstaller,serviceagency,orthe
gassupplier.
WARNING:
FIRE OR EXPLOSION HAZARD
Failuretofollowsafetywarningsexactly
could result in serious injury, death, or
propertydamage.
DANGER
HOT GLASS WILL
CAUSEBURNS.
DO NOT TOUCH GLASS
UNTILCOOLED.
NEVER ALLOWCHILDREN
TOTOUCHGLASS.
A barrier designed to reduce the risk of
burnsfromthehotviewingglassisprovided
withthisapplianceandshallbeinstalledfor
the protection of children and other at-risk
individuals.
MEZZO-1000-AU
MEZZO-1300-AU
MEZZO-1300ST-AU
MEZZO-1600-AU
NOTE: NOT INTENDED FOR
FIREPLACE INSERT.
Ref No: GMK10222
AS4553:
DO NOT PLACE ARTICLES ON OR AGAINST THIS APPLIANCE.
DO NOT USE OR STORE FLAMMABLE MATERIALS NEAR THIS APPLIANCE.
DO NOT SPRAY AEROSOLS IN THE VICINITY OF THIS APPLIANCE WHILE IT IS IN OPERATION.
DO NOT MODIFY THIS APPLIANCE.


2Heat & Glo • MEZZO-1000-AU, MEZZO-1300-AU, MEZZO-1300ST-AU, MEZZO-1600-AU Installation Manual • 2304-970 Rev. D • 3/15
Safety Alert Key:
• DANGER! Indicates a hazardous situation which, if not avoided will result in death or serious injury.
• WARNING! Indicates a hazardous situation which, if not avoided could result in death or serious injury.
• CAUTION! Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
• NOTICE: Used to address practices not related to personal injury.
Table of Contents
InstallationStandardWorkChecklist....................3
1ProductSpecicandImportantSafetyInformation
A. ApplianceCertication............................4
B. GlassSpecications..............................4
C. GasPressureRequirements....................... 4
D. HighAltitudeInstallations..........................5
E. Non-CombustibleMaterialsSpecication..............5
F. CombustibleMaterialsSpecication .................5
G.ElectricalCodes.................................5
2GettingStarted
A. DesignandInstallationConsiderations............... 6
B. ToolsandSuppliesNeeded........................6
C. InspectApplianceandComponents..................6
3FramingandClearances 
A. Appliance/DecorativeFrontDimensionDiagrams.......7
B. ClearancestoCombustibles ...................... 11
C. ConstructingtheApplianceChase..................12
D. FloorProtection................................ 15
4 Termination Location and Vent Information
A. VentTerminationMinimumClearances..............16
B. ChimneyDiagram...............................17
C. ApprovedPipe.................................18
D. UseofElbows .................................18
E. MeasuringStandards............................18
F. ExhaustRestrictorInstructions.....................18
G.VentDiagrams.................................19
5VentClearancesandFraming 
A. PipeClearancestoCombustibles ..................26
B. WallPenetrationFraming/Firestops.................26
C. InstalltheCeilingFirestop........................ 27
D. InstallAtticInsulationShield.......................27
E. InstallingtheHeat-Zone®Kit ......................28
6 Appliance Preparation
A. VentCollarPreparation..........................29
B. SecuringandLevelingtheAppliance................30
7VentingandChimneys 
A. AssembleVentSections......................... 31
B. AssembleSlipSections..........................32
C. SecureTheVentSections........................32
D. DisassembleVentSections....................... 33
E. VerticalTerminationRequirements..................34
F. HorizontalTerminationRequirements ...............35
8 Electrical Information
A. GeneralInformation.............................37
B. WiringRequirements............................38
9 Gas Information
A. FuelConversion................................39
B. GasPressure..................................39
C. GasServiceAccess.............................39
D. GasConnection................................41
E. HighAltitudeInstallations.........................41
F. AirShutterSetting ..............................42
10Finishing
A.FacingandFinishingInstructions...................43
B. MantelandWallProjections.......................48
C. DecorativeFrontDimensionsforFinishing ...........49
11 Appliance Setup
A. FixedGlassAssembly...........................50
B.RemovetheShippingMaterials....................50
C. CleantheAppliance.............................50
D.InstallGlassRefractoryPanels....................50
E. InstallMedia ..................................51
F.InstallLogSet.................................53
G.ApplianceOperation ............................ 53
12 Reference Materials
A. VentComponentsDiagrams ...................... 54
B. Accessories................................... 57
=Containsupdatedinformation.




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Heat & Glo • MEZZO-1000-AU, MEZZO-1300-AU, MEZZO-1300ST-AU, MEZZO-1600-AU Installation Manual • 2304-970 Rev. D • 3/15
Installation Standard Work Checklist
Customer:
Lot/Address:
Model (circle one): MEZZO-1000-AU, MEZZO-1300-AU,
MEZZO-1600-AU, MEZZO-1300ST-AU
Date Installed:
Location of Fireplace:
Installer:
Dealer/Distributor Phone #
Serial #:
Comments: Further description of the issues, who is responsible (Installer/ Builder/ Other Trades, etc) and corrective
action needed _____________________________________________________________________________________
_________________________________________________________________________________________________
Comments Communicated to party responsible ____________________ by ______________________on ___________
(Builder / Gen. Contractor/) (Installer) (Date)
Appliance Install Sections 3 and 6 YES IF NO, WHY?
Veried that the chase is insulated and sealed. (Pg. 12) ___________________________
Required factory-installed non-combustible board is in place. ___________________________
Veried clearances to combustibles. (Pg. 11,13,14) ___________________________
Fireplace is leveled and secured. (Pg. 30) ___________________________
Pipe heat shield is attached to header. Header no wider than 3.5 in.(2x4)
(Pg. 29) ___________________________
Venting/Chimney Sections 4,5 and 7
Venting conguration complies to vent diagrams. (Pg. 18-25) ___________________________
Venting installed, locked, and secured in place with proper clearance. ___________________________
Firestops installed. (Section 5) ___________________________
Attic insulation shield installed. (Pg. 27) ___________________________
Exterior wall/Roof ashing installed and sealed. (Section 7) ___________________________
Terminations installed and sealed. (Section 7) ___________________________
Electrical Section 8 (Pg 37-38)
Unswitched power (220/240 VAC) provided to the appliance. ___________________________
Switch wires properly installed. ___________________________
Gas Section 9 (Pg 39-42)
Proper appliance for fuel type. ___________________________
Was a conversion performed? ___________________________
Leak check performed and inlet pressure veried. ___________________________
Veried proper air shutter setting for installation type. ___________________________
Finishing Section 10 (Pg 43-49)
Combustible materials not installed in non-combustible areas. ___________________________
Veried all clearances meet installation manual requirements. ___________________________
Finishing done correctly using inside t or overlap t method. ___________________________
Finishing template removed. ___________________________
Mantels and wall projections comply with installation manual requirements. ___________________________
Appliance Setup Section 11 (Pg 50-51)
All packaging and protective materials removed (inside & outside of appliance). ___________________________
Refractories and media installed correctly. ___________________________
Glass assembly installed and secured. ___________________________
Accessories installed properly. ___________________________
Decorative front properly installed. ___________________________
Manual bag and all of its contents are removed from inside/under
the appliance and given to party responsible for use and operation. ___________________________
Started appliance and veried no gas leaks exist. ___________________________
Lights work in all switched positions (if so equipped). ___________________________
Component heat shield is installed. (Pg. 38) ___________________________
2304-972 Rev. B 2/15
= Contains updated information.
Hearth & Home Technologies recommends the following:
• Photographing the installation and copying this checklist for your le.
• That this checklist remain visible at all times on the appliance until the installation is complete.
This standard work checklist is to be used by the installer in conjunction with, not instead of, the instructions contained in this
installation manual.
WARNING! Risk of Fire or Explosion! Failure to install appliance according to these instructions can
lead to a  re or explosion.
ATTENTION INSTALLER:
Follow this Standard Work Checklist

4Heat & Glo • MEZZO-1000-AU, MEZZO-1300-AU, MEZZO-1300ST-AU, MEZZO-1600-AU Installation Manual • 2304-970 Rev. D • 3/15
B. GlassSpecications
Thisapplianceisequippedwith5mmceramicglass.Re-
placeglassonlywith5mmceramicglass.Pleasecontact
yourdealerforreplacementglass.
ThisproductislistedtoANSIstandardsfor“VentedGas
FireplaceHeaters”andapplicablesectionsof“GasBurn-
ing Heating Appliances for Manufactured Homes and
Recreational Vehicles”, and “Gas Fired Appliances for
UseatHighAltitudes”.
A. ApplianceCertication
NOT INTENDED FOR USE AS A PRIMARY HEAT SOURCE.
Thisapplianceistestedandapprovedaseithersupplemen-
talroomheatorasadecorativeappliance.Itshouldnotbe
factoredasprimaryheatinresidentialheatingcalculations.
1 ProductSpecicandImportantSafetyInformation 
MODEL: MEZZO-1000-AU, MEZZO-1300-AU,
MEZZO-1300ST-AU, MEZZO-1600-AU
LABORATORY: IAMPO OCEANA
TYPE: Direct Vent Heater
STANDARD: AS:4553
NOTE: Thegascontrolvalvesuppliedwiththisproductisapprovedforamaximuminletpressureof
3.40 kPa.Forpressuresover3.40 kPa,aninlinepressureregulatormustbeinstalledupstream
fromthegascontrolvalve.
C. Gas Pressure Requirements
Pressure requirements for MEZZO-AU replaces are
shownintablebelow.
Twotapsareprovidedontherighthandsideofthegas
controlforatestgaugeconnectiontomeasuretheinlet
andoutletpressures.
Thereplaceanditsindividualshut-offvalvemustbedis-
connectedfromthegassupplypipingsystemduringany
pressuretestingofthesystemattestpressuresinexcess
of3.4kPa.
Ifthereplacemustbeisolatedfromthegassupplypip-
ingsystembyclosinganindividualshut-offvalve,itmust
beofthehandle-lesstype.
MEZZO-1000-AU MEZZO-1300-AU,
MEZZO1300ST-AU MEZZO-1600-AU
NATURAL GAS ULPG NATURAL GAS ULPG NATURAL GAS ULPG
InletGasPressure 1.13-3.40kPA 2.75-3.40kPA 1.13-3.40kPA 2.75-3.40kPA 1.13-3.40kPA 2.75-3.40kPA
Outlet(Manifold)
GasPressure .87kPA 2.40kPA .87kPA 2.40kPA .87kPA 2.40kPA
Max.GasCon-
sumption 32.55 32.05 43.62 (43.62ST)
39.69
(39.69ST) 52.19 44.65
Min.Gas
Consumption 22.07 23.22 29.36 (31.91ST)
28.68
(28.82ST) 35.76 32.54
BurnerInjector
DMS(mm)
#36
(2.71mm)
.#52
(1.61mm)
.124in.
(3.15mm)
#49
(1.85mm)
#28
(3.57mm)
#48
(1.93mm)
PilotInjector .023in.
(.584mm)
.010in.
(.254mm)
.023in.
(.584mm)
.010in.
(.254mm)
.023in.
(.584mm)
.010in.
(.254mm)


5
Heat & Glo • MEZZO-1000-AU, MEZZO-1300-AU, MEZZO-1300ST-AU, MEZZO-1600-AU Installation Manual • 2304-970 Rev. D • 3/15
D. HighAltitudeInstallations
NOTICE: If the heating value of the gas has been reduced,
these rules do not apply. Check with your local gas utility
or authorities having jurisdiction.
Wheninstallingabove2000ft.(610m)elevation:
Reduce input rate 4% for each 1000 ft. (305 m) above
2000ft.(610m).
E. Non-CombustibleMaterialsSpecication
Materialwhichwillnotigniteandburn.Suchmaterialsare
thoseconsistingentirelyofsteel,iron,brick,tile,concrete,
slate,glassorplasters,oranycombinationthereof.
Materials that are reported as passing ASTM E 136,
Standard Test Method for Behavior of Materials in a
Vertical Tube Furnace at 750 ºC (1382 °F) and UL763
shallbeconsiderednon-combustiblematerials.
F. CombustibleMaterialsSpecication
Materialsmadeoforsurfacedwithwood,compressedpa-
per,plantbers,plastics,orothermaterialthatcanignite
and burn, whether ame proofed or not, or plastered or
unplasteredshallbeconsideredcombustiblematerials.
G. Electrical Codes
AllelectricalsafetytestinghasbeendonefollowingtheEN
60335-2-102standard.Localcodesapply.

6Heat & Glo • MEZZO-1000-AU, MEZZO-1300-AU, MEZZO-1300ST-AU, MEZZO-1600-AU Installation Manual • 2304-970 Rev. D • 3/15
2 GettingStarted
Installationandserviceofthisapplianceshouldbe
performedbyqualiedpersonnel.Hearth&Home
Technologies suggests NFI certied or factory
trainedprofessionals,ortechnicianssupervisedby
anNFIcertiedprofessional(www.ncertied.org).
A. DesignandInstallationConsiderations
Heat & Glo direct vent gas appliances are designed to
operatewithallcombustionairsiphonedfromoutsideof
thebuildingandallexhaustgasesexpelledtotheoutside.
Noadditionaloutsideairsourceisrequired.
InstallationMUSTcomplywithlocal,regional,stateand
nationalcodesandregulations.Consultinsurancecarrier,
localbuildinginspector,reofcialsorauthoritieshaving
jurisdiction over restrictions, installation inspection and
permits.
Beforeinstalling,determinethefollowing:
• Wheretheapplianceistobeinstalled.
• Theventsystemcongurationtobeused.
• Gassupplypiping.
• Electricalwiringrequirements.
• Framingandnishingdetails.
• Whetheroptionalaccessories—devicessuchasawall
switchorremotecontrol—aredesired.
C. Inspect Appliance and Components
• Carefullyremovetheapplianceandcomponentsfrom
thepackaging.
• Theventsystemcomponentsanddecorativedoorsand
frontsmaybeshippedinseparatepackages.
• If packaged separately, the media, refractory, and/or
optionallogkitsmustbeinstalled.
• Reporttoyourdealeranypartsdamagedinshipment,
particularlytheconditionoftheglass.
• Readalloftheinstructionsbeforestartingtheinstal-
lation.Followtheseinstructionscarefullyduringthe
installationtoensuremaximumsafetyandbenet.
WARNING! Risk of Fire or Explosion! Damaged parts
could impair safe operation. DO NOT install damaged, in-
complete or substitute components. Keep appliance dry.
B. Tools and Supplies Needed
Beforebeginningtheinstallationbesurethatthefollowing
toolsandbuildingsuppliesareavailable.
Tapemeasure Framingmaterial
Pliers Non-corrosiveleakchecksolution
Hammer Phillipsscrewdriver
Gloves Framingsquare
Voltmeter Electricdrillandbits(1/4in.(6mm)
magnetic)
Plumbline Safetyglasses
Level Reciprocatingsaw
Manometer Flatbladescrewdriver
1/2-3/4in.(13-19mm)length,#6or#8Self-drilling
screws
Caulkingmaterial(300ºF(149ºC)minimumcontinuous
exposurerating)
Hearth& HomeTechnologies disclaimsanyresponsibility
for,andthewarrantywillbevoidedby,thefollowingactions:
• Installation and use of any damaged appliance or vent
systemcomponent.
• Modicationoftheapplianceorventsystem.
• Installation other than as instructed by Hearth & Home
Technologies.
• Improperpositioningofthegaslogsortheglassdoor.
• Installationand/oruseofanycomponentpartnotapproved
byHearth&HomeTechnologies.
Anysuchactionmaycausearehazard.
WARNING! Risk of Fire, Explosion or Electric Shock!
DO NOT use this appliance if any part has been under
water. Call a qualied service technician to inspect the
appliance and to replace any part of the control system
and/or gas control which has been under water.
Improper installation, adjustment, alteration, service or
maintenance can cause injury or property damage. For
assistance or additional information, consult a qualied
servicetechnician,serviceagencyoryourdealer.

7
Heat & Glo • MEZZO-1000-AU, MEZZO-1300-AU, MEZZO-1300ST-AU, MEZZO-1600-AU Installation Manual • 2304-970 Rev. D • 3/15
3 FramingandClearances 
Figure3.1ApplianceDimensions-MEZZO-1000-AU,MEZZO-1300-AU
A. Appliance/DecorativeFrontDimensionDiagrams
Dimensionsareactualappliancedimensions.Useforreferenceonly.ForframingdimensionsandclearancesrefertoSection5.
B
A
C
D
E
F
G
H
I
J
K
M
o
N
O
P
Q
S
T
R
U
GAS ACCESS ELECTRICAL ACCESS
CENTERED ON APPLIANCE
L
Location MEZZO-1000-AU MEZZO-1300-AU
Inches Millimeters Inches Millimeters
A 50 1270 62 1575
B 39-1/4 997 51-1/8 1299
C15-5/8 397 15-5/8 397
D 42-1/2 1080 42-1/2 1080
E 4 102 4 102
F 8-9/16 217 8-9/16 217
G 62 1575 62 1575
H 8-9/16 217 8-9/16 217
I1 25 1 25
J48-3/16 1224 60 1524
Location MEZZO-1000-AU MEZZO-1300-AU
Inches Millimeters Inches Millimeters
K 17-1/8 435 17-1/8 435
L8 203 8 203
M 18-5/8 471 18-5/8 471
N 41-3/4 1060 41-3/4 1060
O 2-3/8 60 2-3/8 60
P 8-9/16 217 8-9/16 217
Q24-1/2 622 24-1/2 622
R 7-1/4 184 7-1/4 184
S8-7/8 225 8-7/8 225
T 2-3/4 70 2-3/4 70
U23-3/4 603 23-3/4 603


8Heat & Glo • MEZZO-1000-AU, MEZZO-1300-AU, MEZZO-1300ST-AU, MEZZO-1600-AU Installation Manual • 2304-970 Rev. D • 3/15
Location MEZZO-1600-AU
Inches Millimeters
A 74 1880
B 63-1/8 1603
C15-5/8 397
D 48-1/2 1232
E 4 102
F 8-9/16 217
G 62 1575
H 8-9/16 217
I1 25
J 72 1829
Location MEZZO-1600-AU
Inches Millimeters
K 17-1/8 435
L8 203
M 18-5/8 471
N 47-3/4 1213
O 2-3/8 60
P 8-9/16 217
Q24-1/2 622
R 7-1/4 184
S8-7/8 225
T 2-3/4 70
U23-3/4 603
Figure3.2ApplianceDimensions-MEZZO-1600-AU
B
A
C
D
E
F
G
H
I
J
K
M
o
N
O
P
Q
S
T
R
U
GAS ACCESS ELECTRICAL ACCESS
CENTERED ON APPLIANCE
L

9
Heat & Glo • MEZZO-1000-AU, MEZZO-1300-AU, MEZZO-1300ST-AU, MEZZO-1600-AU Installation Manual • 2304-970 Rev. D • 3/15
Figure3.3ApplianceDimensions-MEZZO-1300ST-AU
Location MEZZO-1300ST-AU
Inches Millimeters
A 62 1575
B 51-1/8 1299
C15-5/8 397
D 42-1/2 1080
E 4 102
F 8-9/16 217
G 62 1575
H 8-9/16 217
I 1/2 13
J 60 1524
Location MEZZO-1300ST-AU
Inches Millimeters
K 17-1/8 432
L8 203
M 18-1/8 460
N 41-3/4 1060
O 2-3/8 60
P 8-9/16 217
Q24-1/2 622
R 7-1/4 184
S8-7/8 225
T 2-3/4 70
U23-3/4 603
G
KI
M
o
O
P
Q
B
A
C
D
E
S
T
R
H
F
J
L
N
U
GAS ACCESS ELECTRICAL ACCESS
CENTERED ON APPLIANCE


10 Heat & Glo • MEZZO-1000-AU, MEZZO-1300-AU, MEZZO-1300ST-AU, MEZZO-1600-AU Installation Manual • 2304-970 Rev. D • 3/15
Figure3.4CleanFaceTrimFront(InsideFit)DecorativeFrontDimensions
CLEAN FACE TRIM DECORATIVE FRONT
Location
MEZZO-1000-AU MEZZO-1300-AU
MEZZO-1300ST-AU
MEZZO-1600-AU
Inches Millimeters Inches Millimeters Inches Millimeters
A 39 991 51 1295 63 1600
B 16-3/4 425 16-3/4 425 16-3/4 425
C13-1/8 333 13-1/8 333 13-1/8 333
D 37-3/16 945 49-3/16 1249 61-3/16 1554
E40-5/16 1024 52-5/16 1329 64-5/16 1634
F24 610 24 610 24 610
G5/8 16 5/8 16 5/8 16
H25 635 25 635 25 635
H
F
C
B
E
A
D
G
Note:SeeSection10forhearth,mantel
andnishingrequirements.

11
Heat & Glo • MEZZO-1000-AU, MEZZO-1300-AU, MEZZO-1300ST-AU, MEZZO-1600-AU Installation Manual • 2304-970 Rev. D • 3/15
B. Clearances to Combustibles
Whenselectingalocationfortheapplianceitisimportant
toconsidertherequiredclearancestowalls.SeeFigure
3.5andFigure3.6.
WARNING! Risk of Fire or Burns! Provide adequate
clearance around air openings and for service access.
Due to high temperatures, the appliance should be lo-
cated out of trafc and away from furniture and draperies.
NOTICE: Illustrations reect typical installations and are
FOR DESIGN PURPOSES ONLY. Illustrations/diagrams
are not drawn to scale. Actual installation could vary due
to individual design preference.
Figure3.5 ApplianceLocations:MEZZO-AUSingle-SidedModels
Model A B C D E F G
MEZZO-1000-AU Inches 62-1/2 48-1/4 88-1/8
See
Section
10,Figure
10.14and
10.15.
24-1/2 18-3/4 1
Millimeters 1588 1226 2239 622 477 25
MEZZO-1300-AU Inches 70-3/4 60-1/4 100-3/8 28-1/2 18-3/4 1
Millimeters 1797 1530 2550 724 477 25
MEZZO-1600-AU Inches 79-1/2 72-1/4 112-3/8 31-3/4 18-3/4 1
Millimeters 1835 2013 2854 807 477 25
Itisimportanttofollowtheframingandnishinginstruc-
tionsstepbysteptoensureproperplacementofreplace
inthesurroundingframing/nishingmaterials.
B
C
AB
G
B
F
E
B
G
D
Refer to Section 10 for hearth, mantel and
wall projection information.
If a HEAT-ZONE® will be installed, refer to
Section 5.E for information.
Add 712 mm for one or two HEAT-ZONES.


12 Heat & Glo • MEZZO-1000-AU, MEZZO-1300-AU, MEZZO-1300ST-AU, MEZZO-1600-AU Installation Manual • 2304-970 Rev. D • 3/15
C
C
B
A
D
D
Figure3.6ApplianceLocations:MEZZO-AUSee-ThroughModels
C. ConstructingtheApplianceChase
Achaseisaverticalbox-likestructurebuilttoenclosethe
gasapplianceand/oritsventsystem.Incoolerclimates
theventshouldbeenclosedinsidethechase.
NOTICE: Treatment of ceiling restops and wall shield
restops and construction of the chase may vary with the
type of building. These instructions are not substitutes
for the requirements of local building codes. Therefore,
you MUST check local building codes to determine the
requirements to these steps.
Chasesshould be constructedinthemanner ofallout-
sidewallsofthehometopreventcoldairdraftingprob-
lems. The chase should not break the outside building
envelopeinanymanner.
Walls,ceiling,baseplateandcantileveroorofthechase
should be insulated. Vapor and air inltration barriers
shouldbeinstalledinthechaseasperregionalcodesfor
therestofthehome.Additionally,inregionswherecold
airinltrationmaybeanissue,theinsidesurfacesmaybe
sheetrockedandtaped(oranequivalentmethodmaybe
used)toachievemaximumairtightness.
NOTICE: This See-Through appliance is NOT
designed or approved for an indoor/outdoor
application.
Tofurtherpreventdrafts,thewallshieldandceilingre-
stopsshould becaulkedwithcaulk withaminimumof
300ºF(149ºC)continuousexposureratingtosealgaps.
Gas line holes and other openings should be caulked
withcaulkwithaminimumof300ºF(149ºC)continu-
ousexposureratingorstuffedwithunfacedinsulation.If
the appliance is being installed on a cement surface, a
layer of plywood may be placed underneath to prevent
conductingcoldupintotheroom.
MODEL A B C D
MEZZO-
1300ST-AU
Inches 60-1/4 17-1/8 48 .4
Millimeters 1530 435 1219 10
Note: Figure 3.7 and Figure 3.8, and Figure 3.9 show the
replace installed on the oor.  However, this replace can
beelevatedofftheoorprovidedthatthereplaceisproperly
supportedbyframingmaterialsandtheceilingclearancesare
maintained.

13
Heat & Glo • MEZZO-1000-AU, MEZZO-1300-AU, MEZZO-1300ST-AU, MEZZO-1600-AU Installation Manual • 2304-970 Rev. D • 3/15
B
D
A
HEADER
DEPTH**
C
APPLIANCE MAY BE INSTALLED OFF OF FLOOR***
Figure3.7ClearancestoCombustiblesMEZZO-1000-AU,MEZZO-1300-AU,MEZZO-1600-AU
MINIMUM FRAMING DIMENSIONS*
MEZZO-
1300-AU
A B C D E F G H I J K
Rough
Opening
(VentPipe)
Rough
Opening
(Height)
Rough
Opening
(Depth)
Rough
Opening
(Width)
Clearance
toCeiling
Combustible
Floor
Combustible
Flooring
Behind
Appliance
Sidesof
Appliance
Frontof
Appliance
Clearance
toCeiling
Inches 10 42 18-1/4 60-1/4 31 0 0 1 1 48 55-1/2
Millimeters 254 1067 464 1530 787 0 0 25 25 1219 1410
J
G
I
H
E
F
K
E=MEASUREMENT FROM TOP OF
FIREPLACE OPENING
TO CEILING
K=MEASUREMENT FROM
BOTTOM OF FIREPLACE
TO CEILING
MINIMUM FRAMING DIMENSIONS*
MEZZO-
1000-AU
A B C D E F G H I J K
Rough
Opening
(VentPipe)
Rough
Opening
(Height)
Rough
Opening
(Depth)
Rough
Opening
(Width)
Clearance
toCeiling
Combustible
Floor
Combustible
Flooring
Behind
Appliance
Sidesof
Appliance
Frontof
Appliance
Clearance
toCeiling
Inches 10 42 18-1/4 48-1/4 31 0 0 1 1 48 55-1/2
Millimeters 254 1067 464 1226 787 0 0 25 25 1219 1410
MINIMUM FRAMING DIMENSIONS*
MEZZO-
1600-AU
A B C D E F G H I J K
Rough
Opening
(VentPipe)
Rough
Opening
(Height)
Rough
Opening
(Depth)
Rough
Opening
(Width)
Clearance
toCeiling
Combustible
Floor
Combustible
Flooring
Behind
Appliance
Sidesof
Appliance
Frontof
Appliance
Clearance
toCeiling
Inches 10 48 18-1/4 72-1/4 31 0 0 1 1 48 55-1/2
Millimeters 254 1219 464 1835 787 0 0 25 25 1219 1410
*=Adjustframingdimensionsforinteriorsheathing(suchassheetrock)
**=Headerdepthnottoexceed3-1/2in.(89mm).
***=Ifapplianceisinstalledoffofoor,maintainrequiredclearancestocombustibles.
Constructplatforminaccordancewithlocalbuildingcodes.

14 Heat & Glo • MEZZO-1000-AU, MEZZO-1300-AU, MEZZO-1300ST-AU, MEZZO-1600-AU Installation Manual • 2304-970 Rev. D • 3/15
Figure3.8ClearancestoCombustibles-MEZZO-1300ST-AU
MINIMUM FRAMING DIMENSIONS*
A B C D E F G H I J
Rough
Opening
(VentPipe)
Rough
Opening
(Height)
Rough
Opening
(Depth)
Rough
Opening
(Width)
Clearance
toCeiling
Combustible
Floor
Combustible
Flooring
Sidesof
Appliance
Frontor
Rearof
Appliance
Clearance
toCeiling
MEZZO-
1300ST-AU
in. 10 42 17 60-1/4 31 0 0 1 48 55-1/2
mm 254 1067 432 1530 787 0 0 25 1219 1410
F
G
H
E
I
J
E=MEASUREMENT FROM TOP
OF FIREPLACE OPENING
TO CEILING J=MEASUREMENT FROM
BOTTOM OF FIREPLACE
TO CEILING
C
A
B
D
HEADER
DEPTH** HEADER
DEPTH**
APPLIANCE MAY BE
INSTALLED OFF OF FLOOR***
*=Adjustframingdimensionsforinteriorsheathing(suchassheetrock)
**=Headerdepthnottoexceed3-1/2in.(89mm).
***=Ifapplianceisinstalledoffofoor,maintainrequiredclearancestocombustibles.
Constructplatforminaccordancewithlocalbuildingcodes.

15
Heat & Glo • MEZZO-1000-AU, MEZZO-1300-AU, MEZZO-1300ST-AU, MEZZO-1600-AU Installation Manual • 2304-970 Rev. D • 3/15
D. Floor Protection
NOTICE: Install appliance on hard metal or wood surfaces
extending full width and depth. DO NOT install directly
on carpeting, vinyl, tile or any combustible material other
than wood.
WARNING! Risk of Fire! Maintain specied air space
clearances to appliance and vent pipe:
• Insulationandothermaterialsmustbesecuredtoprevent
accidentalcontact.
• Thechasemustbeproperlyblockedtopreventblown
insulation or other combustibles from entering and
makingcontactwithreplaceorchimney.
• Failure to maintain airspace could cause overheating
andre.
Figure3.9FloorProtection

16 Heat & Glo • MEZZO-1000-AU, MEZZO-1300-AU, MEZZO-1300ST-AU, MEZZO-1600-AU Installation Manual • 2304-970 Rev. D • 3/15
A. Vent Termination Minimum Clearances
Figure4.1 MinimumHeightFromRoofToLowestDischarge
 Opening
4 Termination Location and Vent Information
FireRisk.
Maintain vent clearance to combustibles as
specied.
• DO NOTpackairspacewithinsulationorother
materials.
Failuretokeepinsulationorothermaterialsaway
fromventpipecouldcauseoverheatingandre.
WARNING
Figure4.2 StaggeredTerminationCaps
Gas, Wood or Fuel Oil
Termination Cap
B
Gas
Termination
Cap **
A *
*If using decorative cap cover(s), this distance may need to be
increased. Refer to the installation instructions supplied with the
decorative cap cover.
**
A B
6 in. (minimum) up to 20 in.
152 mm/508 mm
18 in. minimum
457 mm
20 in. and over 0 in. minimum
In a staggered installation with both gas and wood or fuel oil
terminations, the wood or fuel oil termination cap must be
higher than the gas termination cap.
H (MIN.) - MINIMUM HEIGHT FROM ROOF
TO LOWEST DISCHARGE OPENING
VERTICAL
WALL
TERMINATION
CAP
HORIZONTAL
OVERHANG
305 mm
X
ROOF PITCH
IS X/ 305 mm
LOWEST
DISCHARGE
OPENING
510 mm MIN.
610 mm MIN.
Angle H(Min.)mm
0°-26.6°..........................................................500*
26.6°-30.3°..........................................................500*
30.3°-33.7°..........................................................500*
33.7°-36.9°..........................................................610*
36.9°-39.8°..........................................................760*
39.8°-42.5°..........................................................990
42.5°-45.0°........................................................1220
45.0°-49.4°........................................................1520
49.4°-53.1°........................................................1830
53.1°-56.3°........................................................2130
56.3°-59.0°........................................................2290
59.0°-60.3°........................................................2440
*910mmminimuminsnowregions

17
Heat & Glo • MEZZO-1000-AU, MEZZO-1300-AU, MEZZO-1300ST-AU, MEZZO-1600-AU Installation Manual • 2304-970 Rev. D • 3/15
B. ChimneyDiagram
Figure4.3 MinimumClearancesforTermination
NOTES:1. Alldistancesaremeasuredverticallyorhorizontallyalongthewalltoapoint
inlinewiththenearestpartoftheterminal.
  2. Prohibitedareabelowelectricitymeterorfuseboxextendstogroundlevel.
  3. Seeclause5.13.6.6forrestrictionsonaueterminalunderaroofedarea.
  4. SeeAppendixJ,FigureJ1(a)andJ2(a)forclearancesrequiredfromaue
terminaltoaLPGascylinder.Aueterminalisconsideredtobeasourceofignition.
MINIMUM CLEARANCES REQUIRED FOR BALANCED FLUE TERMINALS
OR THE FLUE TERMINALS OF OUTDOOR APPLIANCES
T=Flueterminal M=Gasmeter Shadingindicatesprohibited
I=Mechanicalairinlet P=Electricitymeterorfusebox areasforueterminals
f
c
n
I
openable
window
j
jj
door
h
h
h
T
e e
P
T
g
k
k
db
d
M
a
c
g
See note 2
See note 3
T
a - Beloweaves,balconiesorotherprojections: MIN. CLEARANCE - in. (mm)
   Appliancesupto50MJ/hinput.................................................................................... 12(300)
   Appliancesover50MJ/hinput............................................................................... 20-1/2(500)
b - Fromthegroundoraboveabalcony............................................................................... 12(300)
c - Fromareturnwallorexternalcorner......................................................................... 20-1/2(500)
d - Fromagasmeter(M)...................................................................................................... 39(1000)
e - Fromanelectricitymeterorfusebox(P)................................................................... 20-1/2(500)
f - Fromadrainorsoilpipe.................................................................................................... 6(150)
g - Horizontallyfromanybuildingstructure(unlessapplianceapproved
  forcloserinstallation)orobstructionfacingaterminal............................................... 20-1/2(500)
h - Fromanyotherueterminal,cowl,orcombustionairintake.................................... 20-1/2(500)
j - Horizontallyfromanopenablewindow,door,non-mechanicalair
  inlet,oranyotheropeningintoabuilding,withtheexceptionof
  sub-oorventilation:
   Appliancesupto150MJ/hinput............................................................................ 20-1/2(500)
   Appliancesover150MJ/hinput................................................................................... 60(1500)
k - Fromamechanicalairinlet,includingaspablower....................................................... 60(1500)
n - Verticallybelowanopenablewindow,non-mechanicalair
  inletoranyotheropeningintoabuilding,withtheexceptionof...................................... Seetable
  sub-oorventilation................................................................................................................ below
CLEARANCE
SpaceHeaters Allotherappliances
Upto50MJ/hinput Upto50MJ/hinput Over50MJ/hinputand
Upto150MJ/hinput Over50MJ/hinput
6in.(150mm) 20in.(500mm) 39in.(1000mm) 59in.(1500mm)

18 Heat & Glo • MEZZO-1000-AU, MEZZO-1300-AU, MEZZO-1300ST-AU, MEZZO-1600-AU Installation Manual • 2304-970 Rev. D • 3/15
E. MeasuringStandards
Vertical and horizontal measurements listed in the vent
diagramsweremadeusingthefollowingstandards:
• Pipemeasurementsareshownusingtheeffectivelength
ofpipe.SeeSection12.Aforinformationoneffective
lengthofpipecomponents.
• Measurementsaremadefromtheapplianceouterwrap,
notfromthestandoffs.
• Horizontal terminations are measured to the outside
mounting surface (flange of termination cap). See
Figure4.3.
• Vertical terminations are measured to bottom of
terminationcap.
• Horizontalpipeinstalledlevelwithnorise.
C. Approved Pipe
ThisapplianceisapprovedforusewithHearth&Home
Technologies DVP venting systems.  Refer to Section
12.Aforventcomponentinformationanddimensions.
DO NOT mixpipe,ttingsorjoiningmethodsfromdiffer-
entmanufacturers.
The pipe is tested to be run inside an enclosed wall.
Thereisnorequirementforinspectionopeningsateach
jointwithinthewall.
WARNING! Risk of Fire or Asphyxiation. This appli-
ance requires a separate vent. DO NOT vent to a pipe
serving a separate solid fuel burning appliance.
D. Use of Elbows
Diagonalrunshavebothverticalandhorizontalventas-
pects when calculating the effects. Use the rise for the
verticalaspectandtherunforthehorizontalaspect(see
Figure4.4).
Two45ºelbowsmaybeusedinplaceofone90ºelbow.
On45ºruns,onefootofdiagonalisequalto8-1/2in.(216
mm)horizontalrunand8-1/2in.(216mm)verticalrun.A
lengthofstraightpipeisallowedbetweentwo45ºelbows.
SeeFigure4.4.
Figure4.4
Horizontal
Vertical
8-1/2 in.
(216 mm)
8-1/2 in. (216 mm)
12 in.
(305 mm)
Note:Theexhaustrestrictorcomesinstalledonproduct.
NOTICE: Before painting, contact your dealer for
information on the appropriate high temperature paint.
Exhaustrestrictor:MEZZO-1000-AU
1. Locatethetwopilotholesintheinsidereboxcham-
berasshowninFigure4.5.
2. Break the ue restrictor into two pieces. Do this by
bendingthe partbackand forthuntilit breaks.See
Figure4.6.
3. The setting for MEZZO-1000-AU is 2-2.  Align the
holesmarked “2” on thenumbered exhaust restric-
torpiecewiththeholeontheotherexhaustrestrictor
piece.SeeFigure4.7.Aligntheexhaustrestrictor
pieceswiththepilotholesintheinnerreboxcham-
ber.Usetwo1/2in.(13mm)self-piercingscrewsto
secureventrestrictortoreboxheatshield.
4. In some applications, such as those where the re-
place is elevated off the oor, the exhaust restrictor
maybepainted,butpaintingisnotrequired.
F. ExhaustRestrictorInstructions


19
Heat & Glo • MEZZO-1000-AU, MEZZO-1300-AU, MEZZO-1300ST-AU, MEZZO-1600-AU Installation Manual • 2304-970 Rev. D • 3/15
EXHAUST
RESTRICTOR
PILOT
HOLES
GeneralRules:
• When penetrating a combustible wall, a wall shield
restopmustbeinstalled.
• Whenpenetratingacombustibleceiling,aceilingrestop
mustbeinstalled.
• Horizontal runs of vent do not require vertical rise;
horizontalrunsmaybelevel.
• Horizontalterminationcapshouldhavea1/4in.(6mm)
downward slant to allow any moisture in cap to be
released.
G. VentDiagrams
Figure4.5ExhaustRestrictor
Figure4.6BreaktheExhaustRestrictor
1 2 3 4 5
SETTING
1 2 3 4 5
BREAK
HERE
Figure4.7SettingtheExhaustRestrictorforMEZZO-1000-AU
Exhaustrestrictor:MEZZO-1300-AU, MEZZO-1600-AU,
MEZZO-1300ST-AU
1.Breaktheuerestrictorintotwopieces.Dothisby
bendingthepartbackandforthuntilitbreaks.See
Figure4.6.
Note:TheMEZZO-1600-AUdonothavepilotholesfor
theexhaustrestrictorinthereboxchamber.
2. ThesettingforMEZZO-1300-AU,MEZZO-1300ST-AU
andMEZZO-1600-AUis1-1.Aligntheholesmarked
“1”onthenumberedexhaustrestrictorpiecewiththe
holeontheother exhaust restrictor piece.  See Fig-
ure4.8.Centertheexhaustrestrictorontheventand
secureinplacewithtwo1/2in.(13mm)self-piercing
screws.
3. Insomeapplications,suchasthosewherethereplace
iselevatedofftheoor,theexhaustrestrictormaybe
painted,butpaintingisnotrequired.
NOTICE: Before painting, contact your dealer for
information on the appropriate high temperature paint.
1 2 3 4 5
SETTING
1 2 3 4 5
Figure4.8SettingtheExhaustRestrictorforMEZZO-1300-AU,
MEZZO-1300ST-AU, MEZZO-1600-AU

20 Heat & Glo • MEZZO-1000-AU, MEZZO-1300-AU, MEZZO-1300ST-AU, MEZZO-1600-AU Installation Manual • 2304-970 Rev. D • 3/15
Figure4.9
TopVent-HorizontalTerminationVentingwith1elbow
H1V1
FireRisk.ExplosionRisk.
DoNOTpackinsulationorothercombustiblesbetweenceilingrestops.
• ALWAYSmaintainspeciedclearancesaroundventingandrestopsystems.
• Installwallshieldandceilingrestopsasspecied.
Failuretokeepinsulationorothermaterialawayfromventpipecouldcausere.
WARNING
Note:UseDVPSeries
componentsonly.
MEZZO-1000-AU, MEZZO-1300-AU,
MEZZO-1300ST-AU
V1Minimum H1Maximum
2ft. 610mm 1.5ft. 457mm
3ft. 914mm 6ft. 1.8m
4ft. 1.2m 9ft. 2.7m
5ft. 1.5m 12ft. 3.7m
6ft. 1.8m 15ft. 4.6m
7ft. 2.1m 18ft. 5.5m
8ft. 2.4m 21ft. 6.4m
V1+H1=63ft.(19.2m)Maximum
H1=40ft.(12.2m)Maximum
WARNING! Risk of Fire!
DO NOT attach elbow directly to the appliance.
• The MEZZO-1000-AU, MEZZO-1300-AU, MEZZO-1300ST-AU, MEZZO-1600-AU require a minimum of 24 in. (610 mm)
of vertical venting before attaching any elbow to the appliance.
MEZZO-1600-AU
V1Minimum H1Maximum
2ft. 610mm 3ft. 914mm
3ft. 914mm 6ft. 1.8m
4ft. 1.2m 9ft. 2.7m
5ft. 1.5m 12ft. 3.7m
6ft. 1.8m 15ft. 4.6m
7ft. 2.1m 18ft. 5.5m
8ft. 2.4m 21ft. 6.4m
V1+H1=63ft.(19.2m)Maximum
H1=40ft.(12.2m)Maximum