hurlcon MX 125 - Testing Burner Pressure

MX Pool and Spa Heater Page 15
TESTING BURNER PRESSURE
1. Set thermostat to “OFF”.
2. Remove front access panel.
3. Set up manometer
4. Remove screw from ⅛” brass test point located on outlet side of gas valve or burner
manifold
5. Connect manometer tube to test point
6. Set thermostat to “ON” and wait for main burner to ignite
7. Once main burner has ignited, the manometer must indicate the nominal burner pressure
listed below.
8. To adjust gas valve regulator, remove regulator adjustment cap and, using a screwdriver,
turn plastic bush clockwise to increase, anti-clockwise to decrease burner pressure.
9. When burner pressure is correclty set, set thermostat to “OFF”.
10. Replace regulator adjustment cap.
11. Disconnect manometer.
12. Replace screw and fibre washer in test point.
13. Replace front access panel.
Maximum inlet gas pressure is:
Natural Gas 3.5 kPa
Propane Gas 3.5 kPa
ULPG 3.5 kPa
Nominal burner pressure is:
MX 125 MX 150 MX 200 MX 250 MX 300 MX 400 MX 500
Natural Gas 0.82 kPa
116Mj/hr
3.4mm dia
0.82 kPa
144Mj/hr
3.3mm dia
0.82 kPa
192Mj/hr
3.3mm dia
0.82 kPa
240Mj/hr
3.3mm dia
0.82 kPa
288Mj/hr
3.3mm dia
0.75 kPa
350Mj/hr
3.3mm dia
0.78 kPa
480Mj/hr
3.3mm dia
Propane Gas 2.50 kPa
96Mj/hr
1.9mm dia
2.50 kPa
140Mj/hr
1.9mm dia
2.50 kPa
190Mj/hr
1.9mm dia
2.50 kPa
240Mj/hr
1.9mm dia
2.50 kPa
280Mj/hr
1.9mm dia
2.50 kPa
350Mj/hr
1.9mm dia
2.50 kPa
470Mj/hr
1.9mm dia
ULPG 2.00 kPa
82Mj/hr
1.9mm dia
2.00 kPa
123Mj/hr
1.9mm dia
2.00 kPa
164Mj/hr
1.9mm dia
2.00 kPa
205Mj/hr
1.9mm dia
2.00 kPa
246Mj/hr
1.9mm dia
2.00 kPa
312Mj/hr
1.9mm dia
2.00 kPa
410Mj/hr
1.9mm dia