Competency G1

Self-Test 1

1. c. the refrigeration cycle
2. d. an evaporator
3. b. superheat
4. b. the evaporator
5. a. the condenser
6. b. the evaporator
7. c. the reversing valve
8. a. air-to-air
9. d. a lineset
10. a. an auxiliary electric heater installed in the supply air plenum
11. b. a high-quality air filter
12. d. a heat exchanger
13. c. water-to-air
14. a. a condenser
15. d. water-to-water

Self-Test 2

1. b. coefficient of performance (COP)
2. c. energy efficiency rating (EER)
3. a. the source temperature is highest and the load temperature is lowest
4. c. 12,000 btuh
5. d. watts
6. a. 2.93
7. d. the source temperature is highest and the load temperature is lowest
8. b. 10
9. c. 3 GPM
10. c. because the ground temperature is more consistent year-round as compared to air temperature year-round
11. b. HDPE
12. b. 3
13. a. quantity and quality
14. a. a sleeve on the intake line and a vault
15. d. a hydro-pneumatic tank and pressure switch

Self-Test 3

1. b. 1 or 2
2. c. 125 – 150
3. d. sand and Bentonite
4. c. in a reverse-return configuration
5. d. HDPE
6. b. using heat-fusion methods
7. d. two for each field loop
8. a. there are many pipe penetrations through foundation walls
9. c. specialized well-drilling equipment and personnel is needed
10. c. 75 psi for 24 hours
11. d. removing trapped air by using high-velocity water flows
12. c. calcium chloride-based
13. b. radiant floor
14. a. a buffer tank
15. c. an outdoor reset controller

Self-Test 4

1. b. chilled water
2. a. latent cooling
3. d. condensate collection and removal
4. d. clear water waste
5. c. they must be hermetically sealed
6. a. air-to-air
7. a. a heat exchanger
8. b. 2 ft/sec
9. c. 30 gallons
10. a. a microbubble resorber
11. d. 20% glycol, 80% water
12. a. 1 inch above the highest opening in the pump intake line
13. c. an expansion tank
14. b. 50°F (10°C)
15. c. dump, flush and refill all closed-system piping

Competency G2

Self-Test 1

1. a. Direct
2. b. Diffuse
3. c. Solar declination angle
4. a. Solar azimuth angle
5. d. Magnetic declination
6. d. Direct-gain passive
7. a. Thermosiphoning
8. b. Active thermal
9. c. Black matte
10. c. Evacuated tube
11. b. Swimming pool
12. a. Inlet fluid parameter
13. b. 12 pm
14. d. Low collector inlet fluid temperature
15. b. Stagnation

Self-Test 2

1. d. Check valve
2. a. differential temperature controller
3. a. Heat exchanger
4. b. An antifreeze loop with an external heat exchanger
5. b. Drainback system
6. c. Closed loop drainback system
7. c. A tempering valve
8. a. Stratification
9. a. should be piped in a counterflow pattern between the two mediums
10. d. An anti-scald valve is not necessary

Self-Test 3

1. d. The need for cross connection control is never a consideration
2. b. Hydronic radiant floor
3. c. A 3-way mixing valve
4. a. The liquid level in the drainback tank
5. d. An air vent and automatic makeup water
6. b. A 3-way mixing valve
7. a. The “HydroLink”
8. a. Priority
9. c. Outdoor reset
10. a. The load side

Self-Test 4

1. b. The placement of the solar collectors
2. c. 9am to 3pm
3. a. Support/protection of piping
4. c. Aluminum or plastic covers
5. d. 180°
6. a. The same as the local latitude
7. b. Copper tube with pressed connections
8. d. “RETScreen”
9. a. The percentage of the month-by-month total energy load that is met by an active solar system
10. c. An indirect storage-type heat exchanger
11. d. An anti-scald valve
12. d. A circuit setter
13. a. An RPBA
14. b. A drainback tank