Installation Guide

59
Cold Water Supply Pipe
• 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.
When installing 2 pumps in parallel
Storage Tank
Recirculation Pump 1
Storage Tank
Recirculation Pump 2
(If necessary)
Gas Pipe
Hot Water
Storage
Tank
Return Line Recirculation Pump
Hot Water Return Line
Hot Wate
r
Supply
Remote Controller
ThermostatPump Control Wires
(Use external relays)
Water Heater 6Water Heater 2
Storage Tank Supply Line
(1 1/4 in.-2 in.) (Size for max. flow)
Storage Tank Return Line
Water Heater 1
System Controller
(1 1/4 in.-2 in.) (Size for max. flow)
Relief Valve
Hot Water Supply Line
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.
17.1.3 Example of Installation with a Storage Tank and a Recirculation System
(Tank recirculation system)
Installation of the Multi-System