MartinLogan VENT-FREE FIREPLACE SYSTEMS 33ISDG User Manual

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23D8036
NATURAL GAS 
Milli-Volt and T-Stat Pressure 
Regulator Pressure Setting: 3.5" w.c. 
Pilot Regulator: 3.5" w.c. 
Gas Inlet Pressure: Max. 10 1/2" w. c. 
 
Min. 5" w.c.
PRODUCT FEATURES 
AND
 SPECIFICATIONS 
PROPANE/LPG
Note: An external regulator is required to reduce supply pressure to a maximum of 13" w.c.
Milli-Volt and T-Stat Pressure 
Regulator Pressure Setting: 10" w.c.  
Gas Inlet Pressure: Max. 13" w.c. 
 
Min. 11" w.c.  
 
IGNITION CONTROLS 
Piezo ignitor allows ignition of the pilot without the use of matches or batteries. 
 
 Milli-Volt and T-Stat control has four (4) positions:
 
OFF
 
  -  All gas to the gas logs is shut off at the valve.
 
IGN
 
  -  Valve position to light/maintain a standing pilot.
 
ON
 
  -  Valve position to turn ON/OFF log set with remote switch/thermostat.
 
LOW/HI
   -  Variable position to control flame height (heat output). Both front and rear burners are in operation 
to provide realistic glow and yellow flame. 
PILOT
The gas log heater is fitted with a specially designed safety pilot light (ODS assembly) which senses the amount of oxygen 
available in the room and shuts the gas log heater off if the oxygen level begins to drop below a satisfactory level. The 
pilot can only be relit when adequate fresh air is available.
THERMAL GENERATOR
The milli-volt gas log pilot is fitted with a milli-volt generator to provide power for remote activation.
Gas Rate
Model Number
Control
Max BTU/HR
Min BTU/HR
33ISDNTG
Millivolt
28,000
19,000
33ISDNVG
T-Stat
28,000
19,000
Gas Rate
Model Number
Control
Max BTU/HR
Min BTU/HR
33ISDPTG
Millivolt
28,000
23,000
33ISDPVG
T-Stat
28,000
23,000