REDUCED WATER-FLOW
The ICI features an integrated bypass for low water-flow operation helping to reduce your water usage.
RIGOROUSLY TESTED BURNER
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AstralPool ICI 400 (C) Gas Pool & Spa Heater -
Sale price
$6,289.00
Regular price
$10,045.78
Unit price
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Unavailable
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AstralPool ICI 400 (C) Gas Pool & Spa Heater - - Astralpool ICI 400 B - Natural Gas is backordered and will ship as soon as it is back in stock.
Delivery and Shipping
Delivery and Shipping
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AstralPool ICI 400C Pool and Spa Gas Heaters. Similar in appearance to the Viron eVo Range, but with some very different features.
- Authorised Astralpool dealers cannot advertise price online.
- Contact us for pricing & availability.
- Physically-stocked. We aren't a drop shipper!
-
We carry more gas heater spare parts than anyone.
ICI Heater Features:
-
Full LED display with connectivity to Astral appliances
- Cupro-Nickel heat exchanger
- New Ceramic mesh burner
- Full Premix combustion
- Fan-forced
- Modulating fan & gas control
- Single-stacked heat exchanger
- Low condensation
- Super-Efficient
- Allows high water-flow
- HSI Ignition
- Compatible with Connect 10
The AstralPool ICI Gas Heater is the first of the Next Generation gas heating range. With the option of Natural or LPG gas, the ICI is available in 215MJ/h and 400MJ/h sizes with indoor and outdoor models to suit every pool owners needs.
The ICI is also the only full-modulating mid-efficiency heater on the market, and comes factory-fitted with standard 2 PVC AstralPool connections for easy installation.
Designed and built in Canada specifically for our ICI and Viron eVo Heaters, the entirely new burner utilises a special woven mesh used in the aerospace industry. It has been through thousands of hours of testing with greatly improved results.
SIMPLIFIED ENGINEERING
By reducing the number of components that make up our ICI, we have made for easier servicing and simplified installation.
| Model No. | 215 MJ/h | 400 MJ/h |
|---|---|---|
| Gas Connection | AS/NZ 5601 | AS/NZ 5601 |
| NG - CO Level (p.p.m) | 30 - 60 | 30 - 60 |
| Bromine Max. Content (p.p.m) | 5 | 5 |
| Chlorine Max. Content (p.p.m) | 3 | 3 |
| Water Salinity (p.p.m) | 4000 max. | 4000 max. |
| Water Calcium Hardness (p.p.m) | 150 - 250 | 150 - 250 |
| Water Total Alkalinity (p.p.m) | 80 - 120 | 80 - 120 |
| Water pH | 7.6 - 7.8 | 7.6 - 7.8 |
| Acceptable Water Flow Rate (L/min) | 120 - 500 | 200 - 500 |
| LPG Gas Inlet Operating Pressure-High Fire (kPa) | 2.75 | 2.75 |
| Natural Gas Inlet Operating Pressure-High Fire (kPa) | 1.13 | 1.13 |
| LPG Inlet Static Gas Pressure (kPa) | 2.75 - 5 | 2.75 - 5 |
| Natural Gas Inlet Static Gas Pressure (kPa) | 1.13 - 5 | 1.13 - 5 |
| Gas Usage Rate of Nominal Rate (%) | +/- 5 | +/- 5 |
| LPG - CO Level (p.p.m) | 50 - 150 | 50 - 150 |
In plumbing, named sizes are not the actual measurements. A pipe called “50mm” or “2"” does not measure 50 mm across. Instead, it follows nominal sizing, an internationally-standardised naming system.
Use the Outside Diameter (OD) to check your pipe against fittings. Below is a quick reference for common spa & pool pipe sizes:
| Imperial Name | Metric Name | Pipe Diameter (OD) |
|---|---|---|
| 1" | 25 mm | ~33.4–33.7 mm |
| 1.5" | 40 mm | ~48.1–48.4 mm |
| 2" | 50 mm | ~60.2–60.5 mm |
| 2.5" | 65 mm | ~75.2–75.5 mm |
These are nominal sizes and are designed to fit matching fittings — not to measure exactly what their name suggests.
Understanding Plumbing Sizes & Nominal Measurements
Plumbing sizes can be confusing. PVC and many other pipe systems use nominal sizes—the size is a name, not the exact measured dimension. This convention is used across most pool and spa systems so that pipes and fittings remain compatible.
Quick example: A 2" / 50 mm fitting is named for the pipe it connects to, but the pipe’s actual outside diameter (OD) is approx. 60.3 mm (typically ~60.2–60.5 mm in AS/NZ pressure pipe).
Why pipe sizes don’t match the measurements
The Nominal Pipe Size (NPS) system standardises pipe dimensions so that pipes, fittings, valves, and accessories interoperate. Plumbers work with these nominal names every day, but DIYers can be tripped up if they try to match by a tape-measure alone.
How to Measure Pipe Correctly
-
Pipe size is identified by:
- The pipe’s Outside Diameter (OD).
- The fitting’s Inside Diameter (ID) (socket opening).
- Pipe Class / Schedule (e.g., Class 9, 12, 18 or Sch 40) relates to wall thickness and therefore the Internal Diameter (ID) and pressure rating.
- The outside diameter of a fitting is not useful (wall thickness varies by manufacturer).
Important: For pool/spa work, most plumbing uses Pressure Pipe (AS/NZ standards) — not DWV. Always check OD and the pipe class against your equipment specifications.
PVC Pressure Pipe AS/NZ 1477 Dimensions1:
Common nominal sizes with typical outside diameters and indicative inside diameters by class.
| Imperial Name | Metric Name | Outside Diameter (OD) | Class 9 IDº | Class 12 IDº | Class 18 IDº |
|---|---|---|---|---|---|
| 1/2" | 15 mm | ~21.2–21.5 mm | 18.3 mm | 17.8 mm | |
| 3/4" | 20 mm | ~26.6–26.9 mm | 23.7 mm | 22.4 mm | |
| 1" | 25 mm | ~33.4–33.7 mm | 30.5 mm | 29.8 mm | 28.1 mm |
| 32 mm | ~42.1–42.4 mm | 38.5 mm | 37.5 mm | 35.4 mm | |
| 1.5" | 40 mm | ~48.1–48.4 mm | 45.2 mm | 44.1 mm | 42.8 mm |
| 2" | 50 mm | ~60.2–60.5 mm | 55.2 mm | 53.7 mm | 50.5 mm |
| 65 mm | ~75.2–75.5 mm | 68.9 mm | 67.0 mm | 63.2 mm | |
| 2.5" | ~73 mm |
- º Internal diameters vary slightly by manufacturer and class.
- 1 Not all pool/spa fittings match these dimensions exactly. Some do not follow Australian or international standards. Chinese spas may use proprietary fittings.
Hose & Tube Dimensions
Common flexible hose sizes used in pool/spa systems (approximate IDs).
| Imperial Name | Metric Name | Inside Diameter (ID) |
|---|---|---|
| 3/8" | 9–10 mm | ~9 mm |
| 3/4" | 19 mm | ~19 mm |
BSP – British Standard Pipe Thread Sizes
BSP thread names are also nominal. The thread OD will not equal the nominal name.
| BSP Thread Size Naming | Outside Diameter (mm / inch) | TPI |
|---|---|---|
| 1/16" BSP | 7.7 mm / 0.304" | 28 |
| 1/8" BSP | 9.7 mm / 0.383" | 28 |
| 1/4" BSP | 13.16 mm / 0.518" | 19 |
| 3/8" BSP | 16.66 mm / 0.656" | 19 |
| 1/2" BSP / 15 mm | 20.99 mm / 0.825" | 14 |
| 5/8" BSP | 22.99 mm / 0.902" | 14 |
| 3/4" BSP / 20 mm | 26.44 mm / 1.041" | 14 |
| 7/8" BSP | 30.20 mm / 1.189" | 14 |
| 1" BSP / 25 mm | 33.25 mm / 1.309" | 11 |
| 1-1/4" BSP | 41.91 mm / 1.650" | 11 |
| 1-1/2" BSP / 40 mm | 47.80 mm / 1.882" | 11 |
| 2" BSP / 50 mm | 59.61 mm / 2.347" | 11 |
| 2-1/4" BSP | 65.71 mm / 2.587" | 11 |
| 2-1/2" BSP | 75.18 mm / 2.960" | 11 |
| 3" BSP | 87.88 mm / 3.460" | 11 |
| 4" BSP | 113.03 mm / 4.450" | 11 |
| 5" BSP | 138.43 mm / 5.450" | 11 |
| 6" BSP | 163.83 mm / 6.450" | 11 |
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