PoolPak R-410A SWHP Series - Equipment Choices; Overview; Ventilation with Heating; Ventilation with Heating and Energy Recovery

3EGW05-SWHPEG-20140724
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Table 1-2. Recommended Pool Water Chemistry
Pool Spa
Ideal Min Max Ideal Min Max
Total Chlorine (ppm) 1.0 - 3.0 1 3 3.0 - 5.0 1 10
Free Chlorine (ppm) 1.0 - 3.0 1 3 3.0 - 5.0 1 10
Combined Chlorine (ppm) 0 0 0.3 0 0 0.3
Bromine (ppm) if applicable 2.0 - 4.0 2 4 3.0 - 5.0 2 10
pH 7.4 - 7.6 7.2 7.8 7.4 - 7.6 7.2 7.8
Total Alkalinity (ppm) 80 - 100 80 180 80 - 100 60 180
TDS (ppm) 1000 - 2000 300 3000 1000 - 2000 300 3000
Calcium Hardness (ppm) 200 - 400 150 1000 200 - 400 150 1000
Calcium Acid (ppm) 30 - 50 10 100 30 - 50 10 100
EQUIPMENT CHOICES
OVERVIEW
There are several methods for controlling humidity, temperature and ventilation in poolrooms. Each method offers some
level of control, but there can be signicant differences in rst cost and operating cost of each method. Geographic
location, degree of comfort, unit cost and operational cost must be evaluated in the selection of the correct system.
Ventilation with Heating
• Moisture removal is accomplished through the dilution with dryer outside air
• High cost of operation (air reheating)
• Lowest rst cost
• No opportunity to recover energy in the ventilation airstream
• No opportunity to recover energy into the pool water
• No integral cooling capability
• Summer space conditions can be unbearably hot and humid
Ventilation with Heating and Energy Recovery
• Moisture removal is accomplished through the dilution with dryer outside air
• Signicant heat recovery from ventilation air stream
• Cost-effective method but with modest operating cost
• Performance limitations in humid areas or during summer peaks
• No opportunity to recover energy into the pool water
• No integral cooling capability
Mechanical Dehumidication
• Moisture removal is accomplished through mechanical refrigeration
• Signicant heat recovery using “heat pump” technology
• Recovers the most energy from the ventilation airstream
• Offers an opportunity to recover energy into the supply airstream
• Offers an opportunity to recover energy into the pool water
• Higher rst cost with lower operating cost
• No performance limitations based on location
• Tightest control of setpoint conditions
• Integral cooling capability
• Can be integrated to include appropriate ventilation strategies