Installation Guide

63
Storage Tank Recirculation Pump 2
Storage Tank Recirculation Pump 1
Relief Valve
Hot Water Supply Line
Hot Water Return Line
Cold Water Supply Pipe
When installing 2 pumps in parallel
Thermostat
System Controller Unit
Remote Controller
Hot Water
Storage
Tank
Return Line Recirculation Pump
(Size for max. flow) Storage Tank Supply Line (Size for max. flow)
(If necessary)
Storage Tank Return Line
• Size the cold water supply piping to allow
for maximum flow rates of the building.
• Be sure to connect the cold water supply
pipe between the hot water storage tank
and intake side of the storage tank
recirculation pump.
Pump Control Wires (Use external relays)
Hot Wa
ter
Supply
Water Heater
12
Water Heater
2
Water Heater
1
The pump will push water through the Multi-System to heat up the tank. When the temperature of the thermostat is high, the system controller will turn off the pump until the temperature cools down. • Use copper or stainless water piping for the entire system. • For the set temperature of the Remote Controller, use the temperature (of the thermostat) +
about 10°F.
• To achieve the highest recovery, size the storage tank recirculation pump for maximum capacity.
NOTE
• 9 GPM (each) @ 40 ft of head (160°F setting or less) + piping losses through the
system.
• Verify the supply pressure to the Water Heaters is at least 30 psi.
17.2.3 Example of Installation with a Storage Tank and a Recirculation System
(Using System Controller Unit) (Tank recirculation system)
Installation of the Multi-System