General Information
900684-01 06/2018
Innovative Hearth Products
DRT3000 Series Direct-Vent Gas Fireplaces
10
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 control valve (See
Figure 1
- identified IN for the
inlet and OUT for the manifold side). The outlet
manifold
test gauge connection is provided on the valve stem of the
electronic gas valve
(see
Figure 2A
)
. The
inlet
line gas pressure test point for the electronic gas valve is shown in
Figure 2B
. The control valves have a 3/8” (10 mm) NPT thread inlet and outlet side of the valve.
Figure 1 - Millivolt 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).
Figure 2B - Ecoflow INLET Line Gas Pressure Test Point
Figure 2 - Electronic MANIFOLD Outlet Gas Pressure
Test Point on Gas Valve
Figure 2A
Outlet Pressure
Test Point
Inlet Pressure
Test Point
Ecoflow
H I
LO
W
HT
PT
HT
PT
PILO
T
PI
LO
T
ON
it
OFF
IN
OUT
HI/LO Variable
Flame Height
Adjustment
Manifold Pressure Tap
Inlet Pressure Tap
Pilot Adjustment
Screw
Main Gas Control Knob
OFF/PILOT/ON
SIT
Some parts have been removed for clarity
1/8” Inlet line gas pressure ‘test point’ plug (in control compartment)
APPLIANCES WITH ECOFLOW VALVE
Testing Inlet line Gas Pressure (Qualified Technicians
Only):
1. Turn off gas shutoff valve and electrical.
2. Remove 1/8” plug (shown in diagram to the right).
3. Install an 1/8” nipple in place of plug.
4. Connect manometer to nipple, using an 1/8” NPT air
hose nipple/fitting.
5. Turn on shutoff valve and check for proper inlet gas
pressure.
6. Reverse steps 1-5.