PVI Industries PV 19A User Manual

 

 

 

1.  When placing a unit into operation, open relief valve to purge air from top of tank and begin to fill the tank with 

cold water. Check for plumbing leaks.   Be sure the tank is completely filled before closing the relief valve.  

 

2. Push control switch, located on the control box, to “ON” to activate the control valves (steam or boiler water)   

and thermostats. Check the valves for proper operation.   

 

3. Check operating thermostat settings. The operating thermostat is set at the factory at approximately 120°F and 

the upper operating thermostat (if supplied) is set at approximately 125°F. Adjustment may be made by turning 
the thermostat’s dial to the desired temperature. The temperature limiting device is factory set at 200°F. 

 

4.  Push the operating switch to “OFF” before opening manual main steam or boiler water supply valve. The 

heating supply should be introduced gradually until all passages of the heat exchanger are filled 

 

5.  Start operation gradually. Do not admit steam or boiler water to the unit suddenly when empty or cold. Do not 

shock unit with cold fluid when unit is hot. . Slowly bring the unit up to temperature. 

 

6.  Do not operate unit under conditions in excess of those specified on nameplate.   

 

7.  Open nearby hot water tap to maintain a flow of water through the tank when starting up units.  Regulate flow 

of water through the tank to allow the control valve to cycle off and on, and check operation of all safety and 
operating controls. 

 

8.  In all installations there should be no pulsation or water hammer since this causes vibration and strain with 

resulting leaks. 

 

9.  Retighten bolting on all gasketed joints after the heat exchanger has reached temperature to prevent leaks 

and gasket failures. Retightening should be done uniformly and in a diametrically staggered pattern  

 

10.  Complete the attached startup report.