DUALAIR® HEATING AND COOLING UNITS INSTALLATION OPERATION AND SERVICE MANUAL
13.5 Gas Control Valve Maintenance (all models)
No regular maintenance is required on these devices. To change gas control valves, See Page 35, Step 16.1 and Page 39, Section 16.5.
Do not repair or disassemble on site.
Replace faulty gas valves with genuine
ROBERTS GORDON® replacement parts.
13.6 Flue Fan
The flue fan should not require maintenance. However, If the air pressure switch is causing burner lockout then remove the flue fan from the vent box. See Page 38, Section 16.4. Ensure that the fan is free to run and that the fan wheel is clean.
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