Laarsen Associates VW, PW, IW warranty With Horizontal Tank, With Vertical Tank

Page 14 LAARS HEATING SYSTEMS

With

Horizontal

Tank

Legend

B - Check Valve in Hot Water Supply to Tempering Valve

C - Check Valve in Return Line from

Building Loop

D - Tempering Valve

E - Venturi (Suction) Tee

H - Throttling Valves in Building Loop

Returns

I - Circulating Pump for 180° Building

Loop

J - Circulating Pump for 140° Building

Loop

K - Service Valves to Isolate Heater and Pump for Service

With

Vertical

Tank

Legend

B - Check Valve in Hot Water Supply

to Tempering Valve

C - Check Valve in Return Line from

Building Loop

D - Tempering Valve

E - Venturi (Suction) Tee

H - Throttling Valves in Building Loop

Returns

I - Circulating Pump for 180° Building

Loop

J - Circulating Pump for 140° Building

Loop

K - Service Valves to Isolate Heater and Pump for Service

Figure 16. Two-Temperature Hot Water Supply System (Model VW or PW).