Go Gere Save Gie On Your Fuel Bills A perfect combination of design, style and efficiency... with an army of bul Lied «Internal delectable pitas Scary Dining with system circulatory « Built-in expansion tank”, low water cutoff. and indirect:fired water heater connections = Three thermostat inputs and circulatory outputs with delectable priority eliminates need, and costs; of zone or priority control relays * Easy worry-free installation.