B
Cold Water
Figure 13. Two-Temperature Hot Water Supply System with Vertical Tank.
Internet Version for Reference Only | BRADFORD WHITE |
Page 12 |
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.RETURN CIRC
Y SUPPL
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Figure 12. Hot Water Supply System with Dual Tanks, Building Loop Return and Circulating Pump.
To
Drain
Pump
| 140°F | Water | 180°F | Water |
| Return From | |||
| Return From | |||
| Bldg. | |||
| Bldg. | |||
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| ||
|
|
| H |
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| H |
| C |
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180°F | C |
| J |
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Water | J |
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| Pump |
To |
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Bldg. |
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|
Conventional |
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Tank |
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140°F Water |
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|
To Bldg. | D |
| To |
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| ||
|
| Drain | ||
| C |
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| |
| Cold |
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| Water |
| K | |
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| |
Legend
B - Check Valve
To Drain C - Check Valve
D - Tempering Valve
H - Throttling Valves in Building Loop Returns J - Circulating Pump for Return Loop
K - Service Valves to Isolate Heater and Pump for Service
