Operating instructions
Inst.241a Viron Series Pool & Spa Heater V08.11
17
TROUBLESHOOTING
HEATER WILL NOT LIGHT
Possible cause
Remedy
No display
Check if power to heater is turned on
Pump not running
Start pump
Pump air locked
Check for leaks
Filter dirty
Clean filter
Pump strainer basket clogged
Clean strainer
Thermostat turned off
Turn on
Set temperature lower than water temperature
Increase set temperature
Water too hot-fault condition displayed
Refer to fault indication table
Gas turned off
Turn gas cock on
Heater in a Fault condition
Refer to fault indication table
HEATER SHORT CYCLING (RAPID ON AND OFF OPERATION)
Possible cause
Remedy
Insufficient water flow
Clean filter and pump strainer
HEATER MAKING KNOCKING NOISES
Possible cause
Remedy
Low water flow
Check pump condition
Heater operating after pump has shut off
Shut off gas supply and call for service
Heat exchanger scaled
Shut off gas supply and call for service
If the heater cannot be made to perform correctly, please contact the Astral Pool office closest to you.
GAS PIPE SIZING TABLES
1.13 kPa gas meter pressure
Some areas of VICTORIA
Maximum run of copper pipe with average number of fittings
Model
20 mm
25 mm
32 mm
40 mm
50 mm
VIRON 250
2 m
8 m
30 m
75 m
320 m
VIRON 350
-
4 m
14 m
35 m
140 m
VIRON 450
-
3 m
8 m
20 m
90 m
VIRON 550
-
1
6 m
14 m
60 m
1.25 kPa gas meter pressure
S.A., W.A., some areas N.S.W.
Maximum run of copper pipe with average number of fittings
Model
20 mm
25 mm
32 mm
40 mm
50 mm
VIRON 250
6 m
25 m
90 m
240 m
320 m
VIRON 350
3 m
14 m
45 m
110 m
320 m
VIRON 450
2 m
8 m
25 m
70 m
300 m
VIRON 550
-
6 m
18 m
45 m
200 m
2.75 kPa gas meter pressure
N.S.W. some areas, Victoria some areas, Qld some areas
Maximum run of copper pipe with average number of fittings
Model
15 mm
20 mm
25 mm
32 mm
VIRON 250
4 m
40 m
160 m
320+ m
VIRON 350
2 m
20 m
85 m
280 m
VIRON 450
-
12 m
50 m
160 m
VIRON 550
-
8 m
35 m
100 m
Gas Pipe Sizing Tables are indicative only. All pipe sizing should be calculated by an authorised person.
VIRON DSI MODELS WIRING DIAGRAM