Viron Pool and Spa Heater
Page 14
PERFORMANCE DETAILS
TO CHECK BURNER PERFORMANCE
1.
Turn off power supply to pump and heater.
2.
Turn off gas supply to unit.,
3.
Remove top cover.
4.
Remove electrical enclosure screws and hinge electrical cover forward.
5.
Setup gas combustion analyser
6.
Set up manometer to inlet side of gas valve.
7.
Adjust gas rate screw 4 turns anticlockwise.
8.
Turn on gas supply.
9.
Turn on power to heater.
10.
Start heater
11.
Ensure heater is running at full fan rate.
12.
Check inlet gas pressure is between max and min settings.
13.
While heater is running adjust gas ratio screw to achieve a CO ratio of between 30ppm to 60
ppm for Natural Gas models and between 50ppm and 150ppm for model 250 ULPG
14.
Check meter gas usage rate to ensure gas rate is as specified. Gas rate must be /-5%
of nominal rate.
15.
Remove manometer and tighten test point.
16.
Remove analyser.
17.
Refit electrical cover.
18.
Refit cover.
Gas inlet pressures (all models)
Natural Gas
1.13 kPa minimum
5 kPa maximum
Propane (250 only)
2.75 kPa minimum
5 kPa maximum
CO ratio (all models)
Natural Gas
30ppm minimum
60ppm maximum
Propane (250 only)
50ppm minimum
150ppm maximum
Gas inlet rates
Viron 250
Natural gas & Propane 190mj/hr
Viron 350
Natural gas 290mj/hr
Viron 450
Natural gas 375mj/hr
Viron 550
Natural gas 490mj/hr
