Installation
900966-00B, 04/2019
Innovative Hearth Products
DRT3000-C Series Direct-Vent Gas Fireplaces
41
Test Factory and Field Connections for Gas Leaks
WARNING
Never use an open flame to check for leaks.
Turn on gas supply and test for gas leaks, using a gas leak test solution—also known as bubble leak solution.
NOTE: Using a soapy water solution is an effective leak test solution but it is not recommended, because the soap
residue that is left on the pipes/fittings can result in corrosion over time.
1. Light the fireplace (refer to the lighting instructions label in the control compartment or Pages 71-74).
2. Brush all joints and connections with the gas leak test solution to check for leaks. If bubbles are formed, or gas
odor is detected, turn the gas control knob (OFF/PILOT/ON) to the OFF position (millivolt units). Either tighten or
refasten the leaking connection, and then retest as described above.
3. When the gas lines are tested and leak free, rinse off the leak testing solution.
13.
Verify Proper Fireplace Operation
1. With the gas line installed, inspect the system before closing the front of the unit.
2. Follow the pilot lighting instructions:
• Millivolt Systems (Pages 71-72)
• Electronic Systems (Pages 73-74)
NOTE: When lighting the fireplace for the first time, it will take a few minutes for the gas line to purge itself of air.
When purged, the pilot and burner will light and operate as indicated. Subsequent lighting of the fireplace will not
require purging. Inspect the pilot flame (carefully remove logs, if necessary).
Millivolt Fireplace Inspection
The pilot flame should be steady, not lifting or floating. Flame should be blue in color with traces of orange at the
outer edge. The top 3/8” (10 mm) at the pilot generator (thermopile) and the top 1/8” (4 mm) minimum (tip) of the
quick drop out thermocouple should be engulfed in the pilot flame. The flame should project 1” (26 mm) beyond the
hood at all three ports (Figure 32A). Replace the logs if removed for pilot inspection.
To light the burner, turn ON the remote wall switch and rotate the gas valve control knob counterclockwise to the ON
position (the top of the valve).
Electronic Fireplace Inspection
To light the burner, turn ON the wall or remote control switch. Ensure the igniter lights the pilot. The pilot flame
should engulf the thermocouple. Pilot should have two flames, one that engulfs the thermocouple and one that lights
the burner (see Figure 32B).
Figure 32A - Millivolt Pilot
Figure 32B - Electronic Pilot
Thermocouple
Hood
Igniter rod
Thermopile
Pilot
nozzels
3/8” (9 mm)
Min.
Pilot
Hood
Sensor
Ignitor
Igniter
Pilot Hood
Thermocouple
Pilot Hood
Thermocouple
Igniter
