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Heat & Glo • MEZZO36-C/ST-C, MEZZO48-C/ST-C, MEZZO60-C/ST-C, MEZZO72-C/ST-C Owner’s Manual • 2600-981 Rev. C • 10/19
A. Appliance Certification
2
Product Specific Information
Installation and service of this appliance should be performed by
qualified personnel. Hearth & Home Technologies recommends
HHT Factory Trained or NFI certified professionals.
B. Glass Specifications
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
Burning Heating Appliances for Manufactured Homes
and Recreational Vehicles”, and “Gas Fired Appliances
for Use at High Altitudes”. Also Certified for Installation in
a Bedroom or a Bedsitting Room.
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.
NOTICE:
This installation must conform with local codes.
In the absence of local codes you must comply with the
National Fuel Gas Code, ANSI Z223.1-latest edition in
the U.S.A. and the CAN/CGA B149 Installation Codes in
Canada.
C. BTU Specifications
MODEL:
MEZZO36-C, MEZZO36ST-C,
MEZZO48-C, MEZZO48ST-C,
MEZZO60-C, MEZZO60ST-C,
MEZZO72-C, MEZZO72ST-C
LABORATORY:
Underwriters Laboratories, Inc. (UL)
TYPE:
Direct Vent Heater
STANDARD:
ANSI Z21.88-2017 • CSA 2.33-2017
Models
(U.S. or Canada)
Maximum
Input BTU/h
Minimum
Input
BTU/h
Orifice
Size
(DMS)
MEZZO36-C
(NG)
(0-2000
ft
)
30,000
17,500
#36
MEZZO36-C
(Propane)
(0-2000
ft
)
29,000
15,500
#52
MEZZO36ST-C
(NG)
(0-2000
ft
)
30,000
17,500
#36
MEZZO36ST-C
(Propane)
(0-2000
ft
)
29,000
15,500
#52
MEZZO48-C
(NG)
(0-2000
ft
)
40,000
21,000
.124
MEZZO48-C
(Propane)
(0-2000
ft
)
36,000
19,500
#49
MEZZO48ST-C
(NG)
(0-2000
ft
)
40,000
21,000
.124
MEZZO48ST-C
(Propane)
(0-2000
ft
)
36,000
19,500
#49
MEZZO60-C
(NG)
(0-2000
ft
)
50,000
26,000
#28
MEZZO60-C
(Propane)
(0-2000
ft
)
41,000
22,000
#48
MEZZO60ST-C
(NG)
(0-2000
ft
)
50,000
26,000
#28
MEZZO60ST-C
(Propane)
(0-2000
ft
)
41,000
22,000
#48
MEZZO72-C
(NG)
(0-2000
ft
)
58,000
30,000
#23
MEZZO72-C
(Propane)
(0-2000
ft
)
46,000
24,000
#45
MEZZO72ST-C
(NG)
(0-2000
ft
)
58,000
30,000
#23
MEZZO72ST-C
(Propane)
(0-2000
ft
)
46,000
24,000
#45
