AprilAire Thermostat Manuals AprilAire Rating 5.0 (votes: 1) Select Model Name S84N1H1C S84NSU S86NMU S86NMUPR S86WMUPR 8300 Series 8344 8346 8348 8363 8365 8366 8400 Series 8444 8446 8448 8463 8465 8466 8476 8476W 8600 Series 8600 8620 8620W 8800 Series 8820 8840 8900 Series 8910 8910W 8920W