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Figure 5: Recommended Piping for Circulation Systems
NOTE:
Applications, using this piping
arrangement maintains full
warranty.
For this application:
Pump should be controlled by an Aqua-
stat, Timer or Combination Aquastat and
Timer.
Pump to be sized to maintain circulation
loop temperature.
The pump should be sized to overcome
the pressure loss through the tank water
heater, and supply and return plumbing.
Pump to be of bronze or stainless
construction.
IMPORTANT: Connect the building
return line to the hot water supply line._
as close as possible to the water
heater.
I_=o n o91
o o
O
Water Heater
O
L6
Equipment List QTY
Water Heaters 1
Plumbing installation I
Kit (Optional)
(314" Fittings Include:
2 Unions, 2 Ball Valves,
2 Drain Valves and
I Pressure Relief Valve.)
3/4" Gas Connection
_..}_s Supply
Minimum 3/4" Cold Water sUpprLVLine
Tank Water Heater to be Sized for
Heat Loss of Circulation Loop.
___ Electreia_WaterI
-1
Building Supply
Ux' u"n
Expansion Tank
KEY
I _ 3/4" Ball Valve S Pressure Regulator
Z 3/4" Union _ Circulating Pump
CheckValve _ Boiler Drain Valve
[] Pressure Relief Valve D_ Solenoid Valve
16
This is not an engineered drawing. It is intended only as a guide and not
as a replacement for professionally engineered project drawings. This
drawing is not intended to describe a complete system. It is up to the
contractor/engineer to determine the necessary components and
configuration of the particular system being installed. This drawing does
not imply compliance with local building code requirements. It is the
responsibility of the contractor/engineer to ensure installation is in
accordance with all local building codes. Confer with local building
officials before installation,
305 & 505 Indoor Manual