Rasmussen EIS-N720 Electronic Ignition/Pilot on Demand Systems - Natural Gas Only o24 Direct-Vent systems are among the

Direct-Vent systems are among the most efficient of the vented heaters

Do it yourself installation instructions (included)

Diameter 24" x 25' Fits 0 6" Thickness 0

It is considered a coarse form of control and is commonly used for electric heaters

DSI Upgrade Module Kit Installation Manual

Rasmussen EIS-N720 Electronic Ignition/Pilot on Demand Systems - Natural Gas Only o24 Direct-Vent systems are among theIMPORTANT: All Rasmussen products are considered final sale. Once an order is placed, it cannot be canceled or returned. Please double check your order before completing the purchase. Descriptions EIS Pilot on demand system for log sets that are 84"+ (use as a general guideline, go by BTU output). 120V AC powered, stepped down to 24V by the included transformer. No gas modulation control; requires manual valve at burner to control flame height.