1 Gas Hot Water Boiler: Burnham Boiler-w/ x3 zones Perform a tune-up and cleaning to help ensure reliable and safe operation. Inspect for cracks & deterioration of Heat Exchanger Check and clean Burners tubes and heat exchanger- ok, vacuumed-ok. Inspect pilot assembly- recommended to customer to replace thermocouple @ time of maintenance. Customer declined to move forward with recommendation @ this time. Check Safety Controls-ok Check electrical wiring and components-ok Check Gas valve & Gas Line-ok Check Combustion Air & Exhaust-ok Check Temperatures & Water pressure settings; 20psi Performance-ok Check and run Thermostats- operating well at this time. Check zoning operation-isolate and run zoning. Check Honeywell zone valves-ok amps and voltage check. Check water feeder, low water cut off, relief valve, vent damper and expansion tank. Check for water leak no leakage at this time. Ran and monitored for good operations. All zones are fine supply and return lines getting hot. Perform ch