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Hearthstone Quality Home Heating Products, Inc
INPUT
Input Rating BTU/Hr.
Min. Input BTU/Hr.
Orifice Size - DMS
GAS SUPPLY
Manifold Pressure
Min. Supply Pressure
Max. Supply Pressure
INPUT
Input Rating BTU/Hr.
Min. Input BTU/Hr.
Orifice Size – DMS
GAS SUPPLY
Manifold Pressure
Min. Supply Pressure
Max. Supply Pressure
Efficiency NG/LP
*Typical Installation, Steady State Efficiency - %
Steady State Efficiency - %
Annual Fuel Utilization Efficiency (AFUE) - %
Canadian p.4 Efficiency - %
*Your efficiency will increase with the length of the vent run. The typical installation tested is 5ft vertical and 5ft horizontal.
NOTE: The maximum achievable steady state efficiency can vary depending on how the fireplace is
installed and operated.
It is recommended that the pilot flame be turned off if the appliance will not be in use for an extended
period of time.
This appliance is equipped for use with the fuel type indicated on the rating plate. Field conversion is
only permitted with a conversion kit supplied by Hearthstone.
SPECIFICATIONS
NATURAL GAS SPECIFICATION CHART
CELESTE/GEMINI 48
26,000
16,000
#42
CELESTE/GEMINI 48
3.5" w.c. / 0.9kPa
5.5" w.c. / 1.4kPa
10.0" w.c. / 2.5kPa
PROPANE (LP) SPECIFICATION CHART
CELESTE/GEMINI 48
30,000
19,000
#52
CELESTE/GEMINI 48
10.0" w.c. / 2.5kPa
11.0" w.c. / 2.8kPa
13.0" w.c. / 3.3kPa
CELESTE/GEMINI 48/60/72
CELESTE/GEMINI 60
30,000
21,000
#49
CELESTE/GEMINI 60
3.5" w.c. / 0.9kPa
5.5" w.c. / 1.4kPa
10.0" w.c. / 2.5kPa
CELESTE/GEMINI 60
34,000
25,000
#56
CELESTE/GEMINI 60
10.0" w.c. / 2.5kPa
11.0" w.c. / 2.8kPa
13.0" w.c. / 3.3kPa
CEL/GEM 48
CEL/GEM 60
62.2/68.4
69/73.9
61/63.4
64.8/70.8
59/61.4
62.8/68.6
65.7/62
64.5/67.7
Models 8930/8935/8940/8945/8950/8955
CELESTE/GEMINI 72
34,000
27,000
#46
CELESTE/GEMINI 72
3.5" w.c. / 0.9kPa
5.5" w.c. / 1.4kPa
10.0" w.c. / 2.5kPa
CELESTE/GEMINI 72
40,000
28,000
#55
CELESTE/GEMINI 72
10.0" w.c. / 2.5kPa
11.0" w.c. / 2.8kPa
13.0" w.c. / 3.3kPa
CEL/GEM 72
72.6/76.4
70.4/74.8
68.2/72.5
69.8/72.7
8
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