Annual Startup And General Maintenance - MASCOT MSTWW Installation And Operation Instructions Manual

LAARS Heating Systems
Page 56
Section 8 – Maintenance
8.1 Annual Startup and General Maintenance
- Cleaning Air Intake Filter
- T o properly maintain the water heater, you should clean the air intake filter every 3 months. If not, you may
encounter combustion issues
To clean air intake filter:
1. Press Power button on the control panel to turn off the water heater.
2. Disconnect power supply to water heater.
3. Remove front cover of water heater.
4. Pull the filter out of air intake adapter.
5. Remove the filter from the plastic assembly and clean it with a toothbrush and clean running water.
6. Dry the filter completely. And then reinsert the filter into the plastic assembly.
7. Replace the front cover. And then reconnect the power supply to the water heater.
8. Press Power button on the front panel to turn on water heater.
- Cleaning cold water Inlet Filter (Draining the Water Heater)
1. Place a bucket under the appliance to collect the residual water inside the water heater.
2. P ress Power button on the front control panel to turn off the electrical power to the water heater. And then
turn off the gas valve.
3. Close water supply valve on the inlet to the appliance. If there is no valve, turn off main water valve.
4. Please open the hot water faucets completely.
5. Remove the cold water inlet filter. And then clean it with a toothbrush and clean running water.
6. To refill the water heater, follow the steps of "Draining the Water Heater" in reverse.