64
To reset the metering valve to factory settings refer to the chart below and the step-by-step instructions that follow.
Table 15: Inline metering valve setting*
Model
LP Gas (Propane)
Natural Gas
# of Turns Clockwise
# of Turns Clockwise
800
3
2
1000
3
2
1200
3
2
1400
4
2
1600
4
2
1800
4
4 ½
2000
3 ¾
4 ½
2500
3 5/8
4 ½
3000
4
4 ½
3500
5 ¾
7 ½
4000
5 7/8
7 ½
Step 1:
Fully open inline metering valve (counter-clockwise)
Step 2:
Close inline metering valve to preset level
Step 3:
Above table shows initial settings only, fine-tuning will be required with the use of an analyzer.
*
NOTE:
Metering valve is factory set and should not normally require adjustment
This boiler is designed for low fire soft start. At the start of trial for ignition the fan will decelerate to minimum fire and will light off at
soft start speed before ramping up towards full input through the 4-20mA from the controller.
Shut power off to the heater and open the firing valve. Switch power back on and allow the burner to fire. Ignition should be smooth.
Normally the differential gas pressure will be identical to the differential air pressure. Actual differential pressure may vary from the
numbers on the test label due to the field conditions and sample variations. Always make adjustments to meet the recommended
CO
2
levels. Adjust high fire first followed by low fire adjustment.
Allow the water temperature to rise so that the heater cycles on the operator.
Check the temperature rise across the heat exchanger. This will be indicated by taking a difference between the inlet and outlet
temperatures on the
Advantus
control.
Allow the unit to cycle on the limit. This can be done by gradually restricting outlet water flow to raise outlet temperature and then
slowly rotating the limit dial. The auto reset limits are set at 200ºF for domestic hot water and hydronic heating.
At full fire, block 50% of the fan inlet opening.
The display should show ‘LCI OFF’. If it does not, slowly turn the adjustment on the
normally closed blocked flue switch counter clockwise until the blocked flue switch light goes out.
Check the air proving switch. Remove the restriction from the fan inlet and reset the power on the control panel. A properly set air
proving switch will permit the boiler to continue running when it is running at minimum fire or 10% for models 500
– 600 and 4% for
models 800
– 4000.
Check the ignition retries circuit.
Shut the main gas off to the unit and allow it to try for ignition. Trial for ignition should commence within 30 seconds.
8.4
COMISSIONING APPLIANCE
Remove manometers and replace inlet gas pressure test plug.
Fill out start up report for each heater. Be sure to record all settings and readings. Retain a copy of report for future reference.
Startup is now complete and heater may be placed into service.
Summary of Contents for ADVANTUS AVH 500
Page 2: ......
Page 3: ......
Page 38: ...31 Figure 23 Recommended Piping with Reverse Return and Variable Primary Flow...
Page 88: ...81 PART 12 EXPLODED VIEW Figure A...
Page 89: ...82 Figure B FAN BURNER ASSEMBLY AV500 600 some items may not be as shown...
Page 90: ...83 Figure C FAN BURNER ASSEMBLY AV800 4000 some items may not be as shown...
Page 91: ...84 Figure D Figure E...
Page 92: ...85 Figure F Figure G...
Page 93: ...86 Figure H CONTROL BOARD ASSEMBLY...
Page 100: ...93 PART 13 ELECTRICAL DIAGRAMS...
Page 101: ...94...
Page 102: ...95...
