Superior DRT3033 - Page 9

General Information
900285-00 11/2014
Innovative Hearth Products
Superior
TM
DRT3000 Series Direct-Vent Gas Fireplaces
9
BTU Input
Table 1: Input Rate (BTU/HR), Gas Valves
Models
Natural Gas Propane Gas
High Rate Low Rate High Rate Low Rate
33” Models 14,000 10,500 13,000 9,500
35” Models 16,000 11,000 15,000 11,000
40” Models 20,000 14,000 19,000 14,000
45” Models 21,500 13,500 21,500 13,500
Table 2: Thermal Efficiency (%)
Model
Millivolt Electronic
AFUE * P4 ** AFUE * P4 **
33” Models 65 60 65 63
35” Models 66 61 66 63
40” Models 66 61 66 63
45” Models 67 61 67 63
* AFUE is a measurement of the US Department of Energy, ** P4 (EnerGuide) is a measurement of the Canadian Office of Energy Efficiency.
Efficiencies are based on Normal input operation.
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).