Bradford-White Corp 500-1825 - page 13

Internet Version for Reference Only
BRADFORD WHITE
Page 12
B4 Volume Water Heater Page 13
Figure 14. Two-Temperature Hot Water Supply System.
Cold
Water
180°
Water
ToBldg.
Conventional
Tank
To
Drain
24" Min.
ToDrain
Pump
140°
Water
ToBldg.
140° Water
Return
From Bldg.
180° Water
Return
From Bldg.
H
H
C
C
BD
K
K
E
J
Cold
Water
180°
Water
ToBldg.
Conventional
Tank
ToDrain
140°
Water
ToBldg.
To
Drain
Pump
180°Water
Return
From Bldg.
140°Water
Return
From Bldg.
B
D
E
K
J
I
H
H
C
C
With
Vertical
Tank
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
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