General Information
900004-01, 04/2015
Innovative Hearth Products
Astria™ Aries Direct-Vent Gas Fireplaces
9
BTU Input
Table 1: Input Rate, Gas Valves
Models
Input Rate (BTU/HR)
Natural Gas
Propane Gas
Aries 33 / Aries CD 33
12,000
10,000
Aries 35 / Aries CD 35
14,000
12,000
Aries 40 / Aries CD 40
16,000
15,000
Aries 45 / Aries CD 45
20,000
19,000
Table 2: Thermal Efficiency (%)
Model
Millivolt
Electronic
AFUE *
P4 **
AFUE *
P4 **
Aries 33 / Aries CD 33
64
60.4
64
64.8
Aries 35 / Aries CD 35
65.5
61
65.5
65
Aries 40 / Aries CD 40
65.5
62
65.5
65
Aries 45 / Aries CD 45
65
63
65
66
* AFUE is a measurement of the US Department of Energy, ** P4 (EnerGuide) is a measurement of the Canadian Office of Energy Efficiency.
NOTE: Efficiiencies are based on the most commonly used F1797 termination.
Gas Pressure
Table 3: Inlet Gas Supply Pressure
Fuel
Minimum
Maximum
Natural Gas
5” WC / (1.25 kPa)
10.5” WC / (2.61 kPa)
Propane
11.0” WC / (2.74 kPa)
13.0” WC / (3.23 kPa)
Table 4: Manifold Gas Supply Pressure
Fuel
Pressure
Natural Gas
3.5” WC / (0.87 kPa)
Propane
10.0” WC / (2.49 kPa)
Test gauge connections are provided on the front of the millivolt and electronic gas control valve (identified IN for the
inlet and OUT for the manifold side). The control valves have a 3/8” (10 mm) NPT thread inlet and outlet side of the
valve (
Figure 1
and
Figure 2
).
Figure 1: Millivolt Gas Valve
Figure 2: Electronic Gas Valve
Propane tanks are at pressures that will cause damage to valve components. Verify that the tanks have step down
regulators to reduce the pressure to safe levels.
The appliance and its appliance main gas valve must be disconnected from the gas supply piping system during
any pressure testing of that system at test pressures in excess of 1/2 psi (3.5 kPa).
The appliance must be isolated from the gas supply piping system by closing its equipment shutoff valve during
any pressure testing of the gas supply piping system at test pressures equal to or less than 1/2 psi (3.5 kPa).
