CN-Series Pool Heat Exchangers
Robust, Versatile, and Highly Efficient Range of Heat Exchangers Manufactured by Bowman for Pools and Spas of All Sizes
CN-Series shell and tube heat exchangers are designed and built by EJ Bowman in England for use within swimming pool and spa via hot-water boiler heating systems or renewable heat sources, with Valutech acting as the master distributor of Bowman products in North America. CN-Series units offer reductions in CO2 emissions relative to conventional pool heat exchangers, and removable tube stacks allow for maintainability over the course of the unit’s lifetime. We also provide a range of models specifically designed for use with fluids heated by renewable sources, such as solar and geothermal, as well as condensing boiler and heat pump systems.
CN-Series shell and tube pool heat exchangers use the following nomenclature:
- ### = Primary Model
Code - [X] = Material Code
(Ti, SS, or P) - C = Cast Iron End
Covers*
*Where ‘C’ is not present, model is supplied with composite plastic end covers.
All CN-Series units are available in the following tube materials:
- Titanium [Ti]
- SS 316 [SS]
- Cupronickel [P]
The following Bowman shell and tube models are available:
| CN-Series Shell and Tube Model (Boiler: 85-400 kBTU/h) |
CN80[X] | CN135[X] | CN200[X] | CN300[X] | CN400[X] | CN680[X] |
|---|---|---|---|---|---|---|
| Recommended Pool Volume in US Gallons | 8,000 | 13,500 | 20,000 | 32,000 | 40,000 | 49,000 |
| Recommended Boiler Water Flow Rate in GPM | 15 | 15 | 35 | 30 | ||
| Recommended Pool Water Flow Rate in GPM | 65 | 70 | 125 | |||
| Heat Load at 140°F in kBTU/h* | 45 | 75 | 120 | 180 | 200 | 420 |
| Heat Load at 180°F in kBTU/h* | 80 | 135 | 200 | 340 | 400 | 680 |
| Boiler Water Connection (NPT) in inches | ¾” | 1” | 1¼” | |||
| Pool Water Connection | 1 1/2″ Nom. Pipe or Metric 50 mm OD | 2″ Nom. Pipe or Metric 63 mm OD | ||||
| Maximum Operating Temperature in °F (°C) | 210 (99) | |||||
| Maximum Operating Pressure in psig (bar) | 87 (6) | |||||
| Dimensions (A x B x C) in mm | 370 × 60 × 86 | 456 × 140 × 86 | 542 × 226 × 86 | 768 × 452 × 86 | 570 × 202 × 108 | 922 × 746 × 128 |
| Weight in kg | 3.0 | 4.0 | 5.0 | 7.3 | 7.8 | 25 |
*Based on using maintaining a pool temperature of 82°F.
| CN-Series Shell and Tube Model (Boiler: 650-1000 kBTU/h) |
CN650[X]C | CN980[X]C |
|---|---|---|
| Recommended Pool Volume in US Gallons | 65,000 | 98,000 |
| Recommended Boiler Water Flow Rate in GPM | 45 | |
| Recommended Pool Water Flow Rate in GPM | 160 | 170 |
| Heat Load at 140°F in kBTU/h* | 350 | 600 |
| Heat Load at 180°F in kBTU/h* | 650 | 1200 |
| Boiler Water Connection (NPT) in inches | 1½” | |
| Pool Water Connection (NPT) in inches | 2½” | |
| Maximum Operating Temperature in °F (°C) | 210 (99) | |
| Maximum Operating Pressure in psig (bar) | 87 (6) | |
| Dimensions (A × B × C) in mm | 470 × 294 × 128 | 922 × 746 × 128 |
| Weight in kg | 14 | 25 |
*Based on using maintaining a pool temperature of 82°F.
| CN-Series Shell and Tube Model (Boiler: 1000-3000 kBTU/h) |
CN1000[X] | CN1500[X] | CN2000[X] | CN3000[X] |
|---|---|---|---|---|
| Recommended Pool Volume in US Gallons | 100,000 | 150,000 | 200,000 | 300,000 |
| Recommended Boiler Water Flow Rate in GPM | 55 | 90 | 125 | 200 |
| Recommended Pool Water Flow Rate in GPM | 225 | 330 | 500 | 770 |
| Heat Load at 140°F in kBTU/h* | 550 | 1050 | 1500 | 2000 |
| Heat Load at 180°F in kBTU/h* | 1000 | 1900 | 2700 | 3600 |
| Boiler Water Connection (NPT) in inches | 2” | 2½” | 3” | 4¼” |
| Pool Water Connection in inches ID | 3.15” | 4.10” | 5.12” | 5.90” |
| Maximum Operating Temperature in °F (°C) | 210 (99) | |||
| Maximum Operating Pressure in psig (bar) | 87 (6) | |||
| Dimensions (A × B × C) in mm | 532 × 272 × 162 | 704 × 370 × 198 | 724 × 340 × 232 | 754 × 330 × 278 |
| Weight in kg | 27 | 51 | 76 | 106 |
*Based on using maintaining a pool temperature of 82°F.
| CN-Series Shell and Tube Model (Renewable Heat Source/Condensing Boiler/Heat Pump: 100-700 kBTU/h) |
CN200[X] | CN300[X] | CN680[X] | CN980[X] |
|---|---|---|---|---|
| Recommended Pool Volume in US Gallons | 13,500 | 32,000 | 49,000 | 61,000 |
| Recommended Glycol Flow Rate in GPM | 10 | 15 | 25 | 30 |
| Recommended Pool Water Flow Rate in GPM | 30 | 70 | 120 | 135 |
| Heat Load at 113°F in kBTU/h* | 30 | 75 | 145 | 210 |
| Heat Load at 140°F in kBTU/h* | 61 | 150 | 285 | 410 |
| Heat Load at 158°F in kBTU/h* | 82 | 200 | 380 | 550 |
| Boiler Water Connection (NPT) in inches | 1” | 1¼” | 1½” | |
| Pool Water Connection | 1 1/2″ Nom. Pipe or Metric 50 mm OD | 2″ ID NB | 2½” NPT | |
| Maximum Operating Temperature (°F / °C) | 210 (99) | |||
| Maximum Operating Pressure (psig / bar) | 87 (6) | |||
| Dimensions (A × B × C) in mm | 542 × 226 × 86 | 768 × 452 × 86 | 942 × 574 × 108 | 922 × 746 × 128 |
| Weight in kg | 5.0 | 7.3 | 15 | 25 |
*Based on using 50% propylene glycol as the hot side fluid and maintaining a pool temperature of 82°F.