Navien CH-180 Service Manual

Also see for CH-180: Owner's operation manual User's operation manual Installation manual Operation manual Installation manual

Contents

Navien CH-180 Service Manual Manual pdf 128 page image

©Navien America Inc. 2010 CH series service Manual Version 1.08.2.8. Manifold1. Turn off the gas supply2. Turn off the 120V power supply3. Turn off the water supply4. Remove the four screws securingthe front panel. Remove front panel.5. Pull out the PCB. (refer to 8.2.1PCB)6. Loosen the gas pipe from main gasvalve.(lower) and Manifold.(upper)9. Remove the wire harness from the 2solenoids.10. Pull out the manifold assembly.11. Reinstall gas valve wires into themanifold to be replaced.12. Attach the manifold and securedwith screws.8. Loosen the 2 manifold fixing screws.7. Pull out the gas pipe.126Figure 18Figure 19Figure 20Figure 21Failure to correctly assemblethe components according tothese instructionsWARNING