2012 Geo Hydronics Training - REC Info Center · 2013-02-28 · Pool & spa heating Domestic water...
Transcript of 2012 Geo Hydronics Training - REC Info Center · 2013-02-28 · Pool & spa heating Domestic water...
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Load Side Pump
Buffer Tank
Aqua-stat
W2W Unit
Flow Center
Zone Pumps
Manifolds
Tubing
115F
T1 T2
24V AQUASTAT WITH N/O DRY CONTACTS
THAT WILL CLOSE ON FALL IN TEMP!
HEATING ONLY CONTROLS!
Sensor in tank
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Load Side Pump
Buffer Tank
Aqua-stat
W2W Unit
Flow Center
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� Combo Heat Pump◦ Thermostat (Forced Air)◦ Electric auxiliary heater (Optional)◦ Air Pad◦ Buffer Tank (Pressurized or HSS)◦ Load Side Pump◦ Aquastat (hydronic control)◦ Flow Center� Pressurized
� Non-Pressurized
� Hose kit
� Tubing◦ Fasteners
◦ Manifolds
◦ Fittings
� Zone pumps/Zone Valves◦ Flanges (w/ pumps)
� Hydronic Accessories◦ Air Eliminator
◦ Expansion Tank
� Controls◦ Zone Control
◦ Pump Relay
◦ Thermostats
Load Side Pump
Buffer Tank
Aqua-stat
GT Unit
PT Ports
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On Demand Control Strategy!
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• Water-Water Unit Applications• Pressurized piping systems• HSS non-pressurized piping systems• Controls (heating & cooling)
• HSS System (on demand)• HBX Controls (either or, plus Outdoor Reset)• Geo-Tech (Don Schuster) (Set point)• Terra-Therm Hydronic Controller (Set point)• Do it yourself (who knows)
• Controls (Heating only)• HSS• HBX• Tekmar• Johnson Controls• Honeywell• Ranco
� W2W units have lower EER’s than Water-Air heat pumps
� Be careful of sensible cooling capacities of the air handler or water coils – do not size strictly based on tonnage
� All piping with chilled water needs to be insulated including pumps
� Buffer tank must be insulated and have an air seal to prevent condensation
� Advantage – one unit vs. two units
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HBX ECOHBX ECO--1000 Wiring Diagram (2stg)1000 Wiring Diagram (2stg)
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� What is the boiler’s primary function:◦ Back up source only
◦ Supplemental heat – same output temp
◦ Increase supply temp to provide additional btu’s to high load areas
◦ What source of energy is the backup boiler
� Gas
� Electric
� Wood
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� Pool & spa heating
� Domestic water heating
� Snow melt
� Process water chilling
� Ice storage or Ice arena’s
� Waste heat recovery
� Simultaneously heating & cooling
� Design the system properly, not using Btu’s per sqft, but rather good design practices.
� Insulation is a huge factor along with thermal breaks, if you aren’t doing it, verify it is done right!
� Select the proper control strategy for the application, buy off the shelf vs. build your own so anyone can service and troubleshoot!
� Size your piping and pumps for proper flow.
� Select your piping strategy for the application as well as the supplemental heat source.
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Thank You!!!Thank You!!!Thank You!!!Thank You!!!Thank You!!!Thank You!!!Thank You!!!Thank You!!!