COMPONENT SELECTION COMPONENT SELECTION PUTTING THE PARTS TOGETHER (SOLDERING) PUTTING THE PARTS TOGETHER (SOLDERING) MAINTENANCE AND REPAIR MAINTENANCE AND REPAIR SUMMARY, CRITIQUE, QUESTIONS SUMMARY, CRITIQUE, QUESTIONS

Component Selection Heat is a problem Heat is a problem Corrosion is a problem Corrosion is a problem UV is a problem UV is a problem Most plastics are a problem Most plastics are a problem

Pumps Match the pump to the job Match the pump to the job Match the type of pump to the job Match the type of pump to the job

Circulator Pump Head Pump Head = 2.31 feet per PSI Pump Head = 2.31 feet per PSI Drainback systems need high head pumps Drainback systems need high head pumps Closed loop systems do not Closed loop systems do not Open loop systems need bronze, stainless or plastic impeller housings Open loop systems need bronze, stainless or plastic impeller housings

Common Circulator Pumps Taco Taco Grundfos Grundfos Bell & Gossett Bell & Gossett Armstrong Armstrong March – DC – highest head March – DC – highest head Hartell Hartell El Sid – DC very efficient El Sid – DC very efficient

Pump Orientation Vertical Recommended Horizontal OK Causes bearing failure

Pump Placement

Taco Pump Head Taco 006 – 9 ft Taco 006 – 9 ft Taco 008 – 16 ft Taco 008 – 16 ft Taco 009 – 33 ft Taco 009 – 33 ft Taco 0011 – 30 ft – high flow Taco 0011 – 30 ft – high flow

Taco Pump Head

Solar Workhorse Pumps - AC Grundfos F or S, Taco 008 F or B for collector loops – direct pump or closed loop antifreeze Grundfos F or S, Taco 008 F or B for collector loops – direct pump or closed loop antifreeze Grundfos S or Taco 006 B for DHW Grundfos S or Taco 006 B for DHW Grundfos F or B, Taco 009 F or B for Drainback systems Grundfos F or B, Taco 009 F or B for Drainback systems

DC Pumps for Solar systems Collector loops Collector loops March 809 or El Sid PV 10 March 809 or El Sid PV 10 Larger systems – more that 2 -3 collectors Larger systems – more that 2 -3 collectors March 809 HS, El Sid March 809 HS, El Sid

Pump Equivalents Taco 006 – Hartell MD3 IU – March VDC Taco 006 – Hartell MD3 IU – March VDC Taco 008 – Grundfos – March 009 HS 12 VDC Taco 008 – Grundfos – March 009 HS 12 VDC Taco 009 – Grundfos Taco 009 – Grundfos 26-96

Heat Exchangers One Pass One Pass Internal unpressurized Internal unpressurized External double wall External double wall Wraparound Wraparound Internal pressurized Internal pressurized

Tank Construction Steel (with liner) Steel (with liner) Stainless Steel Stainless Steel Polypropylene Polypropylene Fiberglass (with poly liner) Fiberglass (with poly liner)

Solar Storage Tanks

Solar Storage Tanks Most common 80 & 120 Gal.

Solar Storage Tanks - Rheem

Solar Storage Tanks Stiebel-Eltron

Putting the parts together Controls and wiring Controls and wiring Roof work Roof work Soldering pipe Soldering pipe

Controls Differential Controls Differential Controls Aquastats Aquastats Thermostats (line voltage and low voltage) Thermostats (line voltage and low voltage) Relays Relays Bimetals Bimetals

Controls

Controls

Controls

Roof Work Collector Mounts to Joists Collector Mounts to Joists Seal with plastic roof cement or silicone caulk Seal with plastic roof cement or silicone caulk Insulate piping and duct work and weatherproof Insulate piping and duct work and weatherproof

Roof Penetrations Roof jacks (flashing) Roof jacks (flashing) Collector mounts Collector mounts

Extreme wind mounting

Piping Copper tubing Copper tubing Galvanized Steel Galvanized Steel Iron Iron PEX – max 180 degrees PEX – max 180 degrees

Soldering Clean the copper Clean the copper Flux the copper Flux the copper Heat the fitting Heat the fitting Apply solder to the tubing Apply solder to the tubing Don’t disturb the joint while cooling Don’t disturb the joint while cooling

Insulation High heat pipe and duct insulation High heat pipe and duct insulation Closed cell black rubatex, armaflex or halstead tubing Closed cell black rubatex, armaflex or halstead tubing Fiberglass Fiberglass

Common valves and uses

Maintenance Drainback water level Drainback water level Glycol condition Glycol condition Feel the pipes Feel the pipes Observe any monitoring systems Observe any monitoring systems

Summary Understanding the best value systems for any given area and application Understanding the best value systems for any given area and application Plumbing skills Plumbing skills Controls Controls Knowledge of equipment Knowledge of equipment Safety and codes Safety and codes

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