A.O. Smith 505 Series 100 用户手册

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页码 40
Drawing Number:
Drawing Date:
H-6-TC
September 07, 2008
NOTE: This drawing is not intended to describe a complete system and is not a replacement for a pro-
fessional engineering drawing. It is intended only as a guide and does not imply compliance with local 
building code requirements. Confer with local building officials before installation
. The Contractor or 
engineer is to determine the necessary components and configuration of the particular system to be in-
stalled. It is the responsibility of the engineer or contractor to ensure that the installation is in accordance 
with all local building codes.
37
On-Demand
Equipment List                   QTY
On-Demand                          6
Water Heaters
Domestic Hot Water - Backup Storage / Circulation
6 On-Demand Water Heaters
Preferred Piping Installation
Storage Tank
(No Burner or 
Heating Element)
Submersible 
Aquastat
(set @ 20
°F below On- 
Demand Temperature 
Setting)
Supply Line
Expansion
     Tank 
On-Demand
Water Heater
Building 
Circulation 
Pump
Building Hot Water 
Return Line
Pump / Aquastat Control Wire
Expansion
      Tank
Set water Heaters
@ 20°F above storage
tank Aquastat
Gas Supply
Cold Water 
Supply Line
Reference the 
section on 
Pump Sizing for 
Storage Tank 
Application.
On-Demand
Wat er Heat er
On-Demand
Water Heater
On-Demand
Water Heater
On-Demand
Water Heater
On-Demand
Water Heater
Key
Pressure Relief  Valve
Check Valve
3/4" Union
3/4" Ball  Valve
Boiler Drain Valve
Solenoid Valve
S
Pressure Regulator
Circulating Pump
Mixing Valve