Gas Pressure - Superior Fireplaces DRT3033TEN-B Installation And Operation Instructions Manual

Innovative Hearth Products
DRT3000 Series Direct-Vent Gas Fireplaces

Gas Pressure

Table 3 - Inlet Gas Supply Pressure
Table 4 - Manifold Gas Supply Pressure
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
SIT
Figure 2B - Ecoflow INLET Line Gas Pressure Test Point
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).
10
Fuel
Natural Gas
Propane
Fuel
Natural Gas
Propane
Main Gas Control Knob
OFF/PILOT/ON
IN OUT
Manifold Pressure Tap
Inlet Pressure Tap
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.
Minimum
5" WC / (1.25 kPa)
11.0" WC / (2.74 kPa)
Pressure
3.5" WC / (0.87 kPa)
10.0" WC / (2.49 kPa)
Figure 2A
Figure 2 - Electronic MANIFOLD Outlet Gas Pressure
Pilot Adjustment
Screw
HI/LO Variable
Flame Height
Adjustment
Ecoflow
1/8" Inlet line gas pressure 'test point' plug (in control compartment)
10.5" WC / (2.61 kPa)
13.0" WC / (3.23 kPa)
Test Point on Gas Valve
Outlet Pressure
Test Point
Some parts have been removed for clarity
General Information
900684-01 06/2018
Maximum
Inlet Pressure
Test Point