PVI Industries PV500-24 User Manual

QuickDraw

START-UP OPERATION 
 
1.  The boiler water circulating pump has 

been selected to provide optimum flow 
through the heat exchanger tubes to 
meet demand with the available boiler 
water. The pump is controlled by the 
thermostat and draws from the 
operating boiler water loop. When the 
demand is satisfied, the pump stops, 
causing the boiler water to bypass the 

unit. In addition, the water heater maybe 
equipped with a continuous operation 
tank circulation pump. The boiler water 
circulation pump is sized to satisfy all of 
the head resistance of the heat 
exchanger, therefore no pressure drop 
need be considered for this unit in sizing 
primary loop pumps. 

 

 
START-UP PROCEDURE 
 
1.  Fill the tank with water; open the relief 

valve or a nearby hot water outlet to 
purge air from the top of tank. Check for 
plumbing leaks. 

 
2.  Push the control switch to “on” position. 

Check boiler water pump operation. The 
tank circulating pump should also 
operate. Check thermostats for proper 
setting. The thermostats are labeled as 
to their function. The temperature 
limiting device is set at 200

°

F.  

 

Temperature Setting: The thermostats 
are set at the factory to 120

°

F on the 

operating   control.    Upon  startup,  the  

factory preset operating temperature is 
visible on the LED indicator of the digital 
controller. Adjust the temperature using 
the appropriate up and down arrow keys 
on the face of the controller. A slight 
variance in temperature control may be 
noticed as the digital control tunes, 
allow time for the temperature to 
stabilize. 

 
3.  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 boiler 
water pump to cycle off and on, and 
check operation of unit.