General Information
900004-00, 03/2018
Innovative Hearth Products
DRT2000 and DRC2000 Direct-Vent Fireplaces
9
BTU Input
Models
Input Rate (BTU/HR)
Natural Gas
Propane Gas
33” Models
12,000
10,000
35” Models
15,000
12,000
40” Models
16,000
15,000
45” Models
20,000
19,000
Table 1 - Input Rate, Gas Valves
Model
Millivolt
Electronic
AFUE *
P4 **
AFUE *
P4 **
33” Models
64
60.4
64
64.8
35” Models
65.5
61
65.5
65
40” Models
65.5
62
65.5
65
45” Models
65
63
65
66
Table 2 - Thermal Efficiency (%)
* AFUE is a measurement of the US Department of Energy,
** Complies with CSA P.4.1-2015 “Testing Method for Measuring Annual Fireplace Efficiency. P4 (EnerGuide) is a measurement of the
Canadian Office of Energy Efficiency.
NOTE: Efficiencies are based on the most commonly used F1797 termination.
Gas 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 3 - Inlet Gas Supply Pressure
Fuel
Pressure
Natural Gas
3.5” WC / (0.87 kPa)
Propane
10.0” WC / (2.49 kPa)
Table 4 - Manifold Gas Supply Pressure
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 (Figures 1 and 2).
Figure 1 - Millivolt Gas Valve
Figure 2 - Electronic Gas Valves
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).
Based on CSA P.4.1-2015
