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INSTALLATION AND OPERATING INSTRUCTIONS FOR AUTOMATIC INSTANTANEOUS TYPE WATER HEATERS FOR USE WITH NATURAL AND LIQUEFIED PETROLEUM GAS MODEL 125B LP and 125B NG (Flow Modulated) Suitable for heating potable water only Not approved for space heating purposes WARNING FOR YOUR SAFETY...
COMBUSTION AIR REQUIREMENTS CLEARANCES MOUNTING INSTALLATION...
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Before installing the unit, be certain you have the correct heater for your type of Gas Propane or Natural Gas. Identification labels are found on the shipping box, and on the rating plate which is located on the right side panel of VENTING...
Altitude Natural Gas Liquid Propane inches W.C: inches W.C: 0’ - 2.000 ft 5.7" 10.5" 2.000 ft - 4.500 ft 4.6" 8.4" GAS LINE SIZING GAS CONNECTIONS and Gas Regulator...
WATER CONNECTIONS FOR YOUR SAFETY READ BEFORE LIGHTING THE PILOT SWEATED ASSEMBLY THREADED ASSEMBLY 1/2 ELBOW 1/2 ELBOW S FITTING S FITTING S FITTING PIPE PRV TO PIPE PRV TO APPROPRIATE APPROPRIATE DISCHARGE DISCHARGE...
TROUBLE SHOOTING The AquaStar 125 burners are activated by a water flow valve. Numerous water related problems can cause this water valve to malfunction such as: Insufficient water flow volume to activate the burners at its minimum flow requirement; Dirt in the water flow valve causing it to malfunction;...
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It is extremely important for a tankless instantaneous water heater to have the right size gas line to obtain the correct gas pressure Any sign of moisture or corrosion at the joint of the water valve and the gas valve is a sign that the water valve assembly components need to be replaced immediately Do not add any flow restrictor to the shower head.
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