Astralpool ICI Gas Heater Spare Parts List
Astralpool ICI Gas Heater Spare Parts List is backordered and will ship as soon as it is back in stock.
Delivery and Shipping
Delivery and Shipping
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Spare and Replacement parts for Astral Pool's latest ICI gas pool and spa heaters. Use diagram or click on picture to purchase parts. More parts coming. ICI 200 / ICI 400
ITEM No DESCRIPTION PART NUMBER QTY
1 USER PANEL PCB 78166 1
2 FAN PLATE-ALL MODELS 9189430 1
3 FAN GASKET –ALL MODELS 78135 1
3 GASKET- FAN PLATE-ALL MODELS 78135 1
4 FAN PLATE INSULATION-ALL MODELS 1115068 1
5 BURNER-ALL MODELS 78409 1
8 FRONT EXTERNAL PANEL-ALL MODELS 1115114 1
9 FLAME ROD WITH SIGHT GLASS-ALL MODELS 77140 1
10 PRESSURE SWITCH – ALL MODELS 71580 1
11 PRESSURE SWITCH TUBE-ALL MODELS 1115124 1
12 CROSS OVER RETURN HEADER SP21411 1
13 IN/OUT HEATER-ALL MODELS SP20410 1
14 WATER SHIELD-ALL MODELS 1115120 1
15 GAS INLET MASKING BRACKET-ALL MODELS 1115119 1
16 BOLT M8 X 112- square washer 71850 2
17 SIDE PANEL-IN/OUT LOWER-ALL MODELS 1115109 1
18 HEADER HOLE FILLER PLATE 918007 2
19 LOWER SIDE PANEL-ALL MODELS 1115118 1
20 ALUMINUM BASE-ALL MODELS SP78126 1
21 DRAIN HOSE SP78164 1
22 PLASTIC BASE-ALL MODELS 14600014 1
23 PLASTIC TOP COVER-ALL MODELS 14600016 1
24 IGNITION MODULE –ALL MODELS 781382 1
25 FAN 78132 1
25 WATER SHIELD-ALL MODELS 1114690 1
26 GASKET-FAN TO PLATE 78135 1
27 H.S.I – ALL MODELS 726067 1
28 AIR PRESSURE SWITCH 77139 1
29 AIR PRESSURE MOUNT BRACKET-ALL MODELS 1115129 1
30 FIBER GASKET 78141 1
31 WATER SHIELD LEFT SIDE 1114689 1
32 EXTERNAL PANEL-LEFT SIDE 1115115 1
33 HEADER BOLTS 40152 16
34 FLUE TOP COVER OUTDOOR-ALL MODELS 1115126 1
34 FLUE TOP COVER INDOOR-ALL MODELS 1115600 1
35 RETURN HEADER 71049 1
36 INDOOR FLUE SPIGOT 1115110 1
37 GASKET-TUBE SEALS-BAG OF 9 76121 4
38 FLUE BASE-ALL MODELS 1115103 1
39 HEAT EXCHANGER 400- & INSULATION SP111552 1
40 FLUE TUBE-ALL MODELS 78808 1
41 REAR ENCLOSURE CRESENT PANEL-ALL MODELS 1115102 1
42 GASKET 15125013
43 EXTERNAL REAR PANEL-ALL MODELS 1115101 1
TOP COVER W/ VISOR 78615
FAN - RG130 ICI 200 78131
FAN - RG 140 ICI 400 78132
HI LIMIT 175C FLUE 78162
VIRON PILOT IGNITION PACK (HSI - HOT SURFACE IGNITION)
HSI Hot Surface Ignitor - Graphite in current Virons
Main PCB / Thermostat
Pressure Switch / Sensor
Brass Temperature Sensor Well
Temperature Sensor - Pink lead
Inlet High Limit Switch
Outlet High Limit Switch
High Limit Brass Nut - commonly corrodes
Barrel Union Fittings Set w/ Seals
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.
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).
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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