
Product Information
Description
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DEL Ozone 50 (Eclipse 20) Pool Ozone Generator, EC-20
APG ozone for pools up to 50,000 gallons.
The DEL Ozone 50, CMP part EC-20 (PST-42-133-1502), is the corona discharge pool ozone generator earlier sold as the DEL Eclipse 20. CMP rates it for pools up to 50,000 gallons at a nominal 0.5 g/hr of ozone from DEL's Advanced Plasma Gap (APG) cells. It mounts on the wall, runs off the pool timer with the pump, and a venturi injector in the return line draws the ozone into the water under vacuum.
Why PST Customers Pick This
Advanced Plasma Gap Cells
DEL's APG corona discharge cells make the ozone. CMP says APG cells last up to 5 years without significant reduction in output, and the current APG 2 cell doubles the output per cell.
Works With Your Chlorine
CMP pairs DEL ozone with a residual chlorine sanitizer. It says ozone breaks down chloramines and estimates the pool's chlorine demand drops by 60 to 90 percent, based on its extrapolated performance data.
Runs Under Vacuum
A venturi injector manifold in the main return line draws the ozone and air out of the generator, so the unit operates under vacuum. CMP plumbs the injector after the pump, filter, heater and cleaner.
Wires to the Pool Timer
Connect it to the pool timing clock so it runs whenever the pump runs. CMP lists 120/240 V at 0.24 A, 50/60 Hz, with a bonding lug for a No. 6 AWG solid conductor.
Optional MDV for Bubbles
CMP's MDV kit removes ozone bubbles before the water returns to the pool. CMP recommends it to protect pool covers, for indoor pools, and for vinyl liners that fade around the ozone outlet.
Simple Yearly Service
Replace the ozone tube assembly (9-0770-01, tube and check valve) and the ozone module filter (9-0858-01) every year, and each ozone module (9-1636-01) after 15,000 hours. CMP voids the warranty if these are skipped.
Electrical and Ozone Safety
CMP calls for permanent electrical connections by a qualified electrician and GFCI protection, with the generator mounted at least 1 ft above the maximum water level and at least 5 ft from the pool wall. Do not inhale the ozone gas this unit produces.
Specifications
| Identification | |
|---|---|
| Brand | DEL Ozone (CMP) |
| Model | DEL Ozone 50, formerly Eclipse 20 |
| CMP Part Number | EC-20 |
| Type | Corona discharge ozone generator |
| SKU | PST-42-133-1502 |
| Performance | |
| Application | Residential pools up to 50,000 gallons |
| Eclipse 20 Rating | 15,000 gal primary, 50,000 gal supplemental |
| Ozone Output (Nominal) | 0.5 g/hr |
| Ozone Cells | Advanced Plasma Gap (APG) |
| Ozone Cell Life | 5+ years average |
| Electrical | |
| Power | 120/240 V, 0.24 A, 50/60 Hz |
| Fuse | 1 A slo-blo glass, 0.25 x 1.25 in. |
| Bonding | Lug for No. 6 AWG solid conductor |
| Installation | |
| Mounting | Wall |
| Dimensions (L x W x H) | 7.8 x 3.2 x 14.1 in. |
| Ambient Temperature | 35°F to 120°F |
| Location | At least 1 ft above max water level, 5 ft from pool wall |
| Plumbing Options | Injector manifold, MDV |
| Certifications and Service | |
| Certifications | UL, cUL |
| Warranty | 1 year |
| Ozone Module Kit | 9-1636-01, replace after 15,000 hours |
| Ozone Tube Assembly | 9-0770-01, replace yearly |
| Ozone Module Filter | 9-0858-01, replace yearly |
Frequently Asked Questions
What size pool is the EC-20 for?
CMP rates the DEL Ozone 50 (EC-20) for pools up to 50,000 gallons, used alongside a residual chlorine sanitizer. DEL's Eclipse 20 literature put it at 15,000 gallons as primary sanitation and 50,000 gallons as supplemental sanitation.
Is the DEL Ozone 50 the same unit as the Eclipse 20?
It is the same model line under a new name. CMP sells part EC-20 as the DEL Ozone 50, also known by its earlier name, Eclipse 20. Both are listed at 0.5 g/hr nominal output, wall mount, UL and cUL certified, with a 7.8 x 14.1 x 3.2 in. cabinet. CMP lists updated APG 2 cells on the current version.
Where does it go in the plumbing?
The injector manifold goes in the main return line after the pump, filter, heater and cleaner. CMP says to plumb a cleaner tee before the injector, put the injector after any erosion feeder, keep it on a different return leg than an in-floor cleaning system, and avoid legs with high back pressure such as fountains.
How should the water be prepared before start-up?
CMP says to backwash or clean the filter a day before, superchlorinate, adjust pH to 7.4 to 7.6 and total alkalinity to 80 to 120 ppm, and run filtration for 24 hours before starting the ozone system.
Order the DEL Ozone EC-20 From PST
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Additional Info
| Category | Spa Products Spa Ozonators |
| SKU | PST-42-133-1502 |
| MPN | EC-20 |
| Manufacturer | Del Advanced Sanitizer Solutions |
| Weight | 8.84 lb |