Series Premier VS-VH
Page 61
LT135 Dec 2019
MAINTENANCE
General Safety Reminders
Ensure Gas Supply and Electrical Power are shut OFF before commencing maintenance work.
Exception:
Checking ignitor flames will require the system to be operational
.
Keep area clear and free from combustible materials, gasoline and other flammable vapors and liquids.
Caution:
Label all wires prior to disconnection when servicing controls. Wiring Errors can cause improper
and dangerous operation.
Verify proper operation and set-up (as listed in the Commissioning section) after servicing.
Annual Maintenance Recommendations
Annual maintenance,
prior to
the heating season (Fall/Winter) is recommended.
The System
1. Inspect the Common Tailpipe and Vent Pipe for soot or dirt, clean as required to avoid obstructions.
2. Check that Flexible Boot Connectors are without cracks, kinks or leaking connections. Change the Connectors
every three to four years.
3. Ensure that the Vacuum Pump and motor mounting bolts are tight.
4. Make a visual inspection (without dismounting) of the Vacuum Pump impeller.
5. Inspect the Vacuum Switch connections.
6. Clean the Condensate Trap and ensure that all piping to / from the Condensate Trap allows free flow of fluid.
7. Make spot checks of the interior of the Radiant Line Tubes for soot or obstructions, clean as required.
8. Re-align reflectors and supports as needed.
Each Burner
1. Remove Burner and inspect burner face for soot or cracks. Burner face should be back flushed with air every
year, to clean the internal ceramic burner.
2. Visually inspect electrode. Replace if there is excessive oxidation, erosion or cracks in the ceramic insulators.
Set spark gap at 0.125” (3.2 mm) and clean the electrodes.
3. Verify that flame observation glass is clean, free of cracks and airtight.
4. Inspect air filter. Change as necessary – frequency is dependent on the environment.
NOTE: Dirty air filters will restrict combustion air flow into the burner housing, creating a slight negative pressure
environment for the zero governor (and other controls). Consequently, while flame characteristics and balance will
not change appreciably, overall burner rate will decline. Very dirty filters will cause the flame to become more rich
(yellow and soft). Filters can be cleaned once with reverse air pressure, but it is generally more cost effective to
merely replace them.
•
For VS-VH Air Filter includes frame (Bulk Qty. 20) use part No.VH001B
•
For VS-VH Filter Media Kits (Bulk Qty 24) use part No.VH053B
Adjust the System
1. Turn on gas and electric power.
2. Start system and allow to run for 30 minutes.
3. Verify end plate vacuum settings against Installation/Operation Manual, to establish correct burner rates with a
manometer. Check the vacuum at the End Vent Cap of the longest Branch. (Refer to Figure 48 for manometer
positioning details.)
