... 2.CCC,CE,ISO9001:2000 3.Multi-mode Glary vertical gas water heater has its own advantagesA: the adoption of the the European ... function of stagnation,Pump bypass protection, Proof-high-pressure protectionG: Proof-wind protection,Overvoltage water heating system security protection, flameout protection, temperature ... up to the chart Side view the successful cases proof -high-presure gas water heater