Bryant 50YEW Design Manual page 35

System Descriptions
Figure 3-2: Component Legend for Drawings 3-1
to 3-5
Component Legend
3-Way Valve - Manually Operated
3-Way Valve - Motorized
M
Mixing Valve
T
Ball Valve
Gate Valve
Pressure Reducing Valve
Drawing 3-1: Water-to-Water Source Piping -
50YEW (No Source Pumps) or 50PSW / GSW Units
- No Cooling or Separate Cooling System
See drawings in section 2 for Load connections
Bryant Geothermal Heat Pump Systems
Part III: Source Side Design / System Selection
Pressure Relief ("Pop-Off") Valve
Check Valve
Union
Pressure/Temperature (P/T) Port
Circulator Pump
Heat Exchanger
50YEW,
50PSW,
or GSW Unit
Load HX
Water-to-Water System Design Guide
Drawing 3-1 – Heating only application with external Flow
Controller: Drawing 3-1 is used for water-to-water units without
internal source pumps. The Bryant Flow Controller includes one
or two circulator pumps, plus 3-way valves for purging air from
the system. It is important to note that when headering the
ground loop outside of the mechanical room the header must be
a reducing type in order to be able to purge air from the system at
the Flow Controller 3-way valves. Reducing headers are addressed
later in this section.
To/From Ground Loop
Flow Controller
Note 1
P/T port
IN OUT
NOTES:
1. P/T (pressure/temperature) ports are internal for
50YEW series units.
2. Source water piping must be insulated for closed loop
installations.
3. Other components (additional ball valves, unions, etc.)
may be required for ease of service. This drawing
shows only minimum requirements. Your specific
installation will dictate final component selections.
4. Local code supercedes any piping arrangements or
components shown on this drawing.
Source HX
(coaxial)
20Jun07
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