Heat & Glo MEZZO-1000-AU User manual

DANGER
Installation Manual
Installation and Appliance Setup
INSTALLER: Leave this manual with party responsible for use and operation.
OWNER: Retain this manual for future reference.
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.
Heat & Glo • MEZZO-1000-AU, MEZZO-1300-AU, MEZZO-1300ST-AU, MEZZO-1600-AU Installation Manual • 2304-970 Rev. D • 3/15 1
MEZZO-1000-AU
MEZZO-1300-AU
MEZZO-1300ST-AU
MEZZO-1600-AU
Models:
NOTICE: DO NOT discard this manual!
Ref No: GMK10222
AS4553:
NOTE: NOT INTENDED FOR
FIREPLACE INSERT.
WARNING:
FIRE OR EXPLOSION HAZARD
Failure to follow safety warnings
exactly could result in serious injury,
death, or property damage.
DO NOT store or use gasoline or other
flammable 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 fire department.
Installation and service must be performed
by a qualified installer, service agency, or
the gas supplier.
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.

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
A. Vent Collar Preparation ..............................................
29
B. Securing and Leveling the Appliance..........................
30
1 Product Specific and Important Safety Information
7 Venting and Chimneys
A. Appliance Certification ...........................................
4
A. Assemble Vent Sections ............................................
31
B. Glass Specifications ...............................................
4
B. Assemble Slip Sections...............................................
32
C. Gas Pressure Requirements .....................................
4
C. Secure The Vent Sections ........................................
32
D. High Altitude Installations.......................................
5
D. Disassemble Vent Sections .......................................
33
E. Non-Combustible Materials Specification..............
5
E. Vertical Termination Requirements.............................
34
F. Combustible Materials Specification ......................
5
F. Horizontal Termination Requirements ........................
35
G. Electrical Codes .....................................................
5
8 Electrical Information
2 Getting Started
A. General Information ....................................................
37
A. Design and Installation Considerations .................
6
B. Wiring Requirements...................................................
38
B. Tools and Supplies Needed....................................
6
C. Inspect Appliance and Components.......................
6
9 Gas Information
A. Fuel Conversion..........................................................
39
3 Framing and Clearances
B. Gas Pressure ..............................................................
39
A. Appliance/Decorative Front Dimension Diagrams......
7
C. Gas Service Access....................................................
39
B. Clearances to Combustibles ......................................
11
D. Gas Connection ..........................................................
41
C. Constructing the Appliance Chase ..............................
12
E. High Altitude Installations............................................
41
D. Floor Protection .....................................................
15
F. Air Shutter Setting ......................................................
42
4 Termination Location and Vent Information
10 Finishing
A. Vent Termination Minimum Clearances..................
16
A. Facing and Finishing Instructions...................
........................................................................................................ 43
B. Chimney Diagram...............................
17
B. Mantel and Wall Projections.........................................
48
C. Approved Pipe........................................................
18
C. Decorative Front Dimensions for Finishing .................
49
D. Use of Elbows ........................................................
18
E. Measuring Standards..............................................
18
11 Appliance Setup
F. Exhaust Restrictor Instructions.....................
18
A. Fixed Glass Assembly.................................................
50
G. Vent Diagrams............................................................
19
B. Remove the Shipping Materials ..................................
50
C. Clean the Appliance....................................................
50
5 Vent Clearances and Framing
D. Install Glass Refractory Panels...................................
50
A. Pipe Clearances to Combustibles ..........................
26
E. Install Media ...............................................................
51
B. Wall Penetration Framing/Firestops .......................
26
F. Install Log Set .............................................................
53
C. Install the Ceiling Firestop .....................................
27
G. Appliance Operation ..................................................
53
D. Install Attic Insulation Shield...................................
27
E. Installing the Heat-Zone®Kit ..................................
28
12 Reference Materials
A. Vent Components Diagrams ......................................
54
6 Appliance Preparation
B. Accessories ................................................................
57
= Contains updated information.
Heat & Glo • MEZZO-1000-AU, MEZZO-1300-AU, MEZZO-1300ST-AU, MEZZO-1600-AU Installation Manual • 2304-970 Rev. D • 3/15
2

Installation Standard Work Checklist
ATTENTION INSTALLER:
Follow this Standard Work Checklist
This standard work checklist is to be used by the installer in conjunction with, not instead of, the instructions contained in this
installation manual.
Customer:
Lot/Address:
Date Installed:
Location of Fireplace:
Installer:
Dealer/Distributor Phone # ____________________
Serial #:
Model (circle one): MEZZO-1000-AU, MEZZO-1300-AU,
MEZZO-1600-AU, MEZZO-1300ST-AU
Appliance Install Sections 3 and 6 YES IF NO, WHY?
Verified that the chase is insulated and sealed. (Pg. 12) Required factory-
installed non-combustible board is in place. Verified 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 configuration 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 flashing 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 verified.
Verified proper air shutter setting for installation type.
Finishing Section 10 (Pg 43-49)
Combustible materials not installed in non-combustible areas.
Verified all clearances meet installation manual requirements.
Finishing done correctly using inside fit or overlap fit 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 verified no gas leaks exist.
Lights work in all switched positions (if so equipped).
Component heat shield is installed. (Pg. 38)
Hearth & Home Technologies recommends the following:
Photographing the installation and copying this checklist for your file.
That this checklist remain visible at all times on the appliance until the installation is complete.
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
= Contains updated information.
(Builder/Gen.Contractor/)(Installer) (Date)
2304-972 Rev. B 2/15
Heat & Glo • MEZZO-1000-AU, MEZZO-1300-AU, MEZZO-1300ST-AU, MEZZO-1600-AU Installation Manual • 2304-970 Rev. D • 3/15
3
WARNING! Risk of Fire or Explosion! Failure to install appliance according to these instructions
can lead to a re or explosion.

Information
1 Product Specific and Important Safety
A. Appliance Certification
MODEL: MEZZO-1000-AU, MEZZO-1300-
AU, MEZZO-1300ST-AU, MEZZO-1600-
AU LABORATORY: IAMPO OCEANA
TYPE: Direct Vent Heater
STANDARD: AS:4553
This product is listed to ANSI standards for “Vented Gas
Fireplace Heaters” and applicable sections of “Gas
Burning Heating Appliances for Manufactured Homes
and Recreational Vehicles”, and “Gas Fired Appliances
for Use at High Altitudes”.
NOT INTENDED FOR USE AS A PRIMARY HEAT
SOURCE. This appliance is tested and approved as either
supplemental room heat orasadecorativeappliance.It shouldnot
befactoredasprimaryheatinresidentialheatingcalculations.
B. Glass Specifications
This appliance is equipped with 5 mm ceramic glass.
Replace glass only with 5 mm ceramic glass. Please
contact your dealer for replacement glass.
C. Gas Pressure Requirements
Pressure requirements for MEZZO-AU fireplaces 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 fireplace and its individual shut-off valve must be
disconnected from the gas supply piping system during
any pressure testing of the system at test pressures in
excess of 3.4 kPa.
If the fireplace must be isolated from the gas supply
piping 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)
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.
Heat & Glo • MEZZO-1000-AU, MEZZO-1300-AU, MEZZO-1300ST-AU, MEZZO-1600-AU Installation Manual • 2304-970 Rev. D • 3/15
4

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 Specification
Material which will not ignite and burn. Such materials are
those consisting entirely of steel, iron, brick, tile, concrete,
slate, glass or plasters,or anycombination 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 Specification
Materials made of or surfaced with wood, compressedpa-
per, plant fibers, plastics, or other material that can ignite
and burn, whether flame proofed or not, or plastered or
unplasteredshall be considered combustible materials.
G. Electrical Codes
All electrical safety testing has been done following
the EN 60335-2-102 standard. Local codes apply.
Heat & Glo • MEZZO-1000-AU, MEZZO-1300-AU, MEZZO-1300ST-AU, MEZZO-1600-AU Installation Manual • 2304-970 Rev. D • 3/15 5

2 Getting Started
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, fire officials 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 configuration to be used.
Gas supply piping.
Electrical wiring requirements.
Framing and finishing details.
Whether optional accessories—devices such as a
wall switch or remote control—are desired.
Installation and service of this appliance should be
performed by qualified personnel. Hearth & Home
Technologies suggests NFI certified or factory
trained professionals, ortechnicians supervised by
anNFIcertifiedprofessional(www.nficertified.org).
Improper installation, adjustment, alteration, service or
maintenance can cause injury or property damage. For
assistance or additional information, consult a qualified
service technician, service agency or your dealer.
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 °F (149 °C) minimum continuous
exposure rating)
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 toensuremaximumsafetyandbenefit.
WARNING! Risk of Fire or Explosion! Damaged parts
could impair safe operation. DO NOT install damaged, in-
complete or substitute components. Keep appliance dry.
Hearth & Home Technologies disclaims any responsibility
for, and thewarranty willbe voidedby, thefollowing actions:
Installation and use of any damaged appliance or
vent system component.
Modification 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.
Installationand/oruse of any component partnot approved
by Hearth&HomeTechnologies.
Any such action may cause a fire hazard.
WARNING! Risk of Fire, Explosion or Electric Shock!
DO NOT use this appliance if any part has been under
water. Call a qualified service technician to inspect the
appliance and to replace any part of the control system
and/or gas control which has been under water.
Heat & Glo • MEZZO-1000-AU, MEZZO-1300-AU, MEZZO-1300ST-AU, MEZZO-1600-AU Installation Manual • 2304-970 Rev. D • 3/15
6

Clearances
3 Framing and
A. Appliance/Decorative Front Dimension Diagrams
Dimensions areactualappliance dimensions.Useforreference only.Forframingdimensions and clearancesrefertoSection5.
Heat & Glo • MEZZO-1000-AU, MEZZO-1300-AU, MEZZO-1300ST-AU, MEZZO-1600-AU Installation Manual • 2304-970 Rev. D • 3/15 7
J
M
K
I
H
o
L
CENTERED ON APPLIANCE
U
T
P
O
N
Q
S
R
A
B
C
D
F
GAS ACCESS ELECTRICAL ACCESS
G
E
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
C
15-5/8
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
I
1
25
1
25
J
48-3/16
1224
60
1524
Location
MEZZO-1000-AU
MEZZO-1300-AU
Inches
Millimeters
Inches
Millimeters
K
17-1/8
435
17-1/8
435
L
8
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
Q
24-1/2
622
24-1/2
622
R
7-1/4
184
7-1/4
184
S
8-7/8
225
8-7/8
225
T
2-3/4
70
2-3/4
70
U
23-3/4
603
23-3/4
603
Figure 3.1 Appliance Dimensions - MEZZO-1000-AU, MEZZO-1300-AU

Figure 3.2 Appliance Dimensions - MEZZO-1600-AU
J
M
K
I
H
L
CENTERED ON APPLIANCE
D
C
B
N
U
T
O
Q
S
R
P
A
o
GAS ACCESS ELECTRICAL ACCESS
G
E
F
Location
MEZZO-1600-AU
Inches
Millimeters
A
74
1880
B
63-1/8
1603
C
15-5/8
397
D
48-1/2
1232
E
4
102
F
8-9/16
217
G
62
1575
H
8-9/16
217
I
1
25
J
72
1829
Location
MEZZO-1600-AU
Inches
Millimeters
K
17-1/8
435
L
8
203
M
18-5/8
471
N
47-3/4
1213
O
2-3/8
60
P
8-9/16
217
Q
24-1/2
622
R
7-1/4
184
S
8-7/8
225
T
2-3/4
70
U
23-3/4
603
Heat & Glo • MEZZO-1000-AU, MEZZO-1300-AU, MEZZO-1300ST-AU, MEZZO-1600-AU Installation Manual • 2304-970 Rev. D • 3/15
8

GAS ACCESS ELECTRICAL ACCESS
Figure 3.3 Appliance Dimensions - MEZZO-1300ST-AU
Heat & Glo • MEZZO-1000-AU, MEZZO-1300-AU, MEZZO-1300ST-AU, MEZZO-1600-AU Installation Manual • 2304-970 Rev. D • 3/15 9
UT
P
O
N
M
K
J
H
I
Q
SR
A _____________
C
D
L
o
CENTERED ON APPLIANCE
B
E
F
G
Location
MEZZO-1300ST-AU
Inches
Millimeters
A
62
1575
B
51-1/8
1299
C
15-5/8
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
L
8
203
M
18-1/8
460
N
41-3/4
1060
O
2-3/8
60
P
8-9/16
217
Q
24-1/2
622
R
7-1/4
184
S
8-7/8
225
T
2-3/4
70
U
23-3/4
603

CLEAN FACE TRIM DECORATIVE
FRONT
Note: See Section 10 for hearth, mantel
and finishing requirements.
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
C
13-1/8
333
13-1/8
333
13-1/8
333
D
37-3/16
945
49-3/16
1249
61-3/16
1554
E
40-5/16
1024
52-5/16
1329
64-5/16
1634
F
24
610
24
610
24
610
G
5/8
16
5/8
16
5/8
16
H
25
635
25
635
25
635
Figure 3.4 Clean Face Trim Front (Inside Fit) Decorative Front Dimensions
10 Heat & Glo • MEZZO-1000-AU, MEZZO-1300-AU, MEZZO-1300ST-AU, MEZZO-1600-AU Installation Manual • 2304-970 Rev. D • 3/15
G
C
H
B
D
E
A

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 traffic and away from furniture and draperies.
NOTICE: Illustrations reflect typical installations and are
FOR DESIGN PURPOSES ONLY. Illustrations/diagrams
are not drawn to scale. Actual installation could vary due
to individual design preference.
It is important to follow the framing and finishing instruc-
tions step by step to ensure proper placement of
fireplace in the surrounding framing/finishing materials.
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
A
G
E
G
B
C
B
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.
F
B
Add 712 mm for one or two HEAT-ZONES.
D
B
Heat & Glo • MEZZO-1000-AU, MEZZO-1300-AU, MEZZO-1300ST-AU, MEZZO-1600-AU Installation Manual • 2304-970 Rev. D • 3/15 11

NOTICE: This See-Through appliance is NOT
designed or approved for an indoor/outdoor
application.
MODEL
A
B
C
D
MEZZO-
1300ST-AU
Inches
60-1/4
17-1/8
48
.4
Millimeters
1530
435
1219
10
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 firestops and wall shield
firestops 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
outside walls of the home to prevent cold air drafting
problems. The chase should not break the outside
building envelope in any manner.
Walls, ceiling, base plate and cantilever floor of the chase
should be insulated. Vapor and air infiltration barriers
should be installed in the chase as per regional codes for
the rest of the home. Additionally, in regions where cold
air infiltration may be an issue, the inside surfaces may be
sheetrocked and taped (or an equivalent method may be
used) to achieve maximum air tightness.
To further prevent drafts, the wall shield and ceiling fire-
stops should be caulked with caulk with a minimum of
300 °F (149 °C) continuous exposure rating to seal gaps.
Gas line holes and other openings should be caulked
with caulk with a minimum of 300 °F (149 °C) continuous
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.
Note: Figure 3.7 and Figure 3.8, and Figure 3.9 show the
fireplace installed on the floor. However, this fireplace can be
elevated off the floor provided that the fireplace is properly
supported by framing materials and the ceiling clearances are
maintained.
D C C
D
B
A
12 Heat & Glo • MEZZO-1000-AU, MEZZO-1300-AU, MEZZO-1300ST-AU, MEZZO-1600-AU Installation Manual • 2304-970 Rev. D • 3/15

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- Rough
1300-AU
A
B
C
D
E
F
G
H
I
J
K
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
MINIMUM FRAMING DIMENSIONS*
MEZZO-
Rough1600-
AU
A
B
C
D
E
F
G
H
I
J
K
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 applianceis installed off of floor, maintain required clearances to
combustibles.Construct platform in accordance with local building codes.
Figure 3.7 Clearances to Combustibles MEZZO-1000-AU, MEZZO-1300-AU, MEZZO-1600-AU
K=MEASUREMENT FROM
BOTTOM OF FIREPLACE
TO CEILING
K
F
J
G
E=MEASUREMENT FROM TOP
OF FIREPLACE OPENING TO
CEILING
I
APPLIANCE MAY BE INSTALLEDOFF OFFLOOR***
HEADER
DEPTH**
D
B
C
A
Heat & Glo • MEZZO-1000-AU, MEZZO-1300-AU, MEZZO-1300ST-AU, MEZZO-1600-AU Installation Manual • 2304-970 Rev. D • 3/15 13

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
* = Adjust framing dimensions for interior sheathing (such as sheetrock)
**= Header depth not to exceed 3-1/2 in. (89 mm).
***= If applianceis installed off of floor, maintain required clearances to
combustibles.Construct platform in accordance with local building codes.
Figure 3.8 Clearances to Combustibles - MEZZO-1300ST-AU
A
E=MEASUREMENT FROM TOP
OF FIREPLACE OPENING
TO CEILING J=MEASUREMENT FROM
BOTTOM OF FIREPLACE
TO CEILING
HEADER
DEPTH**
HEADER
DEPTH**
E
F
C
I
D
G
H
APPLIANCE MAY BE
INSTALLEDOFF OF FLOOR***
14 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 specified 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 fireplace or chimney.
Failure to maintain airspace could cause overheating
and fire.
Figure 3.9 Floor Protection
Heat & Glo • MEZZO-1000-AU, MEZZO-1300-AU, MEZZO-1300ST-AU, MEZZO-1600-AU Installation Manual • 2304-970 Rev. D • 3/15 15

4Termination Location and Vent Information
A. Vent Termination Minimum Clearances
HORIZONTAL
OVERHANG
510mmMIN.
610mmMIN.
VERTICAL
WALL
LOWEST
DISCHARGE
OPENING
TERMINATION
CAP
X
305 mm
ROOF PITCH
IS X/ 305 mm
H (MIN.) - MINIMUM HEIGHT FROM ROOF
TO LOWEST DISCHARGE OPENING
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
Figure 4.1 Minimum Height From Roof To Lowest Discharge
Opening
Fire Risk.
Maintain vent clearance to combustibles as
specified.
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 fire.
WARNING
A
B
6 in. (minimum) up to 20 in.
152 mm/508 mm
18 in. minimum
457 mm
20 in.and over
0in.minimum
Gas, Wood or Fuel Oil
Termination Cap
Gas
Termination
Cap **
B
A *
* If usingdecorative cap cover(s), this distancemayneed to be
increased.Refertotheinstallationinstructionssuppliedwiththe
decorativecapcover.
Inastaggeredinstallationwithbothgasandwoodorfueloil
** terminations,thewoodorfueloilterminationcapmustbe
higherthanthegasterminationcap.
Figure 4.2 Staggered Termination Caps
16 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
T = Flue terminal M = Gas meter Shading indicates prohibited
I = Mechanical air inlet P = Electricity meter or fuse box areas for flue terminals
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 flue 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-floor 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-floor 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)
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 flue terminal under a roofed area.
4. See Appendix J, Figure J1(a) and J2(a) for clearances required from a flue terminal
to a LP Gas cylinder. A flue terminal is considered to be a source of ignition.
MINIMUM CLEARANCES REQUIRED FOR BALANCED FLUE TERMINALS
OR THE FLUE TERMINALS OF OUTDOOR APPLIANCES
Figure 4.3 Minimum Clearances for Termination
Heat & Glo • MEZZO-1000-AU, MEZZO-1300-AU, MEZZO-1300ST-AU, MEZZO-1600-AU Installation Manual • 2304-970 Rev. D • 3/15 17
f
n
c
openable
wi nd ow
I
I
k
k
I I
door
h
h
h
g
T
T
e e
P
See note 2
d
M
a
d
b
c
g
See note 3
T

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, fittings or joining methods from
different 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 45ºelbows may be used in place of one 90ºelbow.
On 45ºruns, 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.
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.
F. Exhaust Restrictor Instructions
Note: The exhaust restrictor comes installed on
product. Exhaust restrictor: MEZZO-1000-AU
1.Locate the two pilot holes in the inside firebox
chamber as shown in Figure 4.5.
2.Break the flue 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 restrictor
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 firebox cham-
ber. Use two 1/2 in. (13 mm) self-piercing screws to
secure vent restrictor to firebox heat shield.
4.In some applications, such as those where the fire-
place is elevated off the floor, 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.
Figure4.4
Vertical
Horizontal
(216 mm)
8-1/2 in.
8-1/2in.(216mm)
18 Heat & Glo • MEZZO-1000-AU, MEZZO-1300-AU, MEZZO-1300ST-AU, MEZZO-1600-AU Installation Manual • 2304-970 Rev. D • 3/15

Exhaust restrictor: MEZZO-1300-AU, MEZZO-1600-AU,
MEZZO-1300ST-AU
1. Break the flue 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 firebox 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 Figure 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 fireplace
is elevated off the floor, 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.
Figure 4.5 Exhaust Restrictor
Figure 4.7 Setting the Exhaust Restrictor for MEZZO-1000-AU
Figure 4.8 Setting the Exhaust Restrictor for MEZZO-1300-AU,
MEZZO-1300ST-AU, MEZZO-1600-AU
G. Vent Diagrams
General Rules:
When penetrating a combustible wall, a wall shield
firestop must be installed.
When penetrating a combustible ceiling, a ceiling
firestop 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.
SETTING
1 2 3 4 5
1 2 3 4 5
EXHAUST
RESTRICTOR
PILOT
HOLES
BREAK
HERE
SETTING
1 2 3 4 5
1 2 3 4 5

Figure 4.6 Break the Exhaust Restrictor
Heat & Glo • MEZZO-1000-AU, MEZZO-1300-AU, MEZZO-1300ST-AU, MEZZO-1600-AU Installation Manual • 2304-970 Rev. D • 3/15 19