Residential XR Energy Saver Gas

• 2" Non-CFC foam insulation (1" on M1 models).
• Factory installed dielectric waterway fittings.
• Vitraglas®.
• Side tappings for space heating.
• Temperature and Pressure Relief Valve included.
• Brass drain valve.
• Factory Installed Hydrojet® Total Performance System
• Slider combustion chamber door.