• Designed and built to provide the homeowner and commercial user with dependable, highly efficient, production of hot water within a durable, long lasting water heater unit
• All units are periodically tested by an independent laboratory to assure the highest achievable ratings for efficiency and reliable hot water flow
• Ease of maintenance
• All piped fittings are accessible from the front of the heater for servicing
• The"female" temperature and pressure adapter will directly accept the"male" temperature and pressure relief valve
• An extra large observation door for flame inspection and testing
• Piping feeds slightly different on copper unit
• Attractive baked enamel steel jacket
• High density blanket insulation
• Quality, fuel efficient beckett or carlin flame retention burner
• Burner and immersion type dual aquastat prewired at factory
• Oil burner nozzle is installed at factory
• 6" diameter flue collar
• 0.75 firing rate

therma-flow 690-54

690-54