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Honeywell DH90 manual

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Table of contents for the manual

  • Page 1

    DH90 Whol e House Deh umid ifi er wit h fresh air v ent ila t io n In sta ll a ti o n Gu id e Dehumidification Fresh Air V entilation Compact Size Energy Efficient The DH9 0 wh ole hou se d ehu mi dif ier int egr ate s hig h-c apa ci ty dehum idi fic ati on, fr es h air vent ila - tio n, and filtr ati on, into a comp act and easy to ins tal l encl [...]

  • Page 2

    DH90 Dehu mid ifier • F or HV A C Ins ta lle r Only 2 T ab le of Cont ents I n t r o d u c t i o n ....................... 1 Fe a tu res & B e ne fi t s . . . . . . . . . . . . . . . . . 1 Sa f et y Pre c au ti o ns . . . . . . . . . . . . . . . . . . 2 1. I nt en d ed A pp l ic at io n . . . . . . . . . . . . . . . . 3 2. A p p r o v a l s .[...]

  • Page 3

    F or HV A C Ins taller Only • Instal la ti on Guide 3 1 . I n te n d e d Ap p li ca ti o n f or DH 90 The DH90 is intended for use in residential applications to reduce the indoor humidity levels and increase comfort. With the optional ventilation ducting and ventilation control hookup, the device also provides precise amounts of ventilation air [...]

  • Page 4

    DH90 Dehu mid ifier • F or HV A C Ins ta lle r Only 4 The DH90 plugs into a common grounded 115V AC outlet. The device draws 6.2 Amps under normal operating conditions. If used in an area which may become wet, a ground fault interrupter (GFI) protected circuit is recommended. IM POR T A NT : Do not ins tal l t he humid ist at wher e it may not ac[...]

  • Page 5

    F or HV A C Ins taller Only • Instal la ti on Guide 5 equivalent rectangular . For longer lengths, use a minimum 12" diameter or equivalent. Grills or diffusers on the duct ends must not excessively restrict airflow . • Isolated Areas: Effective dehumidification may requir e that ducting be branched to isolated, stagnant air flow areas. Us[...]

  • Page 6

    DH90 Dehu mid ifier • F or HV A C Ins ta lle r Only 6 Instead of installing a separate return to the DH90, and if the existing system has multiple returns, it is possible to select one to disconnect fr om the existing forced air system and use it for the dedicated DH90 r eturn. Always select a return from a central location in the structure in an[...]

  • Page 7

    F or HV A C Ins taller Only • Instal la ti on Guide 7 4.5 Noise A batement A length of 10' or more of acoustical flex ducting on the outlet of the DH90 will reduce air noise from the fan. A length of flexible ducting on all DH90 duct connections is recommended to reduce noise transmitted to rigid ductwork in the structure. 5. Mai nt ena nce [...]

  • Page 8

    DH90 Dehu mid ifier • F or HV A C Ins ta lle r Only 8 Figu re 7: Singl e transforme r , conventiona l system. Wake Room System Fan Heat Auto AM DST Tue R C W Y G R R C W Y G M19994 G F R C C C C H W G T W8150A HV AC Wake Room System Fan Heat Auto AM DST Tue W R HV AC COOLING HEA TING R C C Y G R R C W Y G M19995A G F R C C C C H W G T NOTE: REMOV[...]

  • Page 9

    F or HV A C Ins taller Only • Instal la ti on Guide 9 7 . P arts List For replacement parts call: 1-800-345-6770. DH90A1007 — DH90 Dehumidifier EARD6 — Motorized Damper 50018994-001 — 14" x 14" x 1" MERV 11 Filter 50018995-001 — 10" Back Draft Damper 8. Setting t he co ntro l 1. Be s ur e p ow er is tu rne d o n. 2. Se[...]

  • Page 10

    DH90 Dehu mid ifier • F or HV A C Ins ta lle r Only 1 0 9. 1 T rou bleshooti ng No dehumidification, neither fan nor compressor run with fan switch and ventilation timer OFF . 1. Unit unplugged or no power to outlet. 2. Humidity control set too high or defective. 3. Loo se co nn ec ti on in i nt ern al or co nt r ol wi ri ng . 4. Defective Compre[...]

  • Page 11

    F or HV A C Ins taller Only • Instal la ti on Guide 1 1 Fan does not run with ventilation activated. Compressor runs briefly but cycles on & off with humidity control turned to ON. 1. Loose connection in fan circuit. 2. Obstruction prevents fan rotation. 3. Defective fan. 4. Defective fan relay . 5. Defective fan capacitor . Evaporator coil f[...]

  • Page 12

    1 2 Ho n ey we ll wa rra nt s t hi s p ro d uc t , ex cl ud i ng ba tt ery , to be f ree f rom d e fe c ts i n t he wo r km an shi p or ma te ria ls , u nd er no rma l use a n d s erv i ce , f or a p er io d o f five ( 5) ye a rs f rom t he da te of p u rc h as e by th e c on sum er . I f at any ti me du ri ng th e w ar - ra n ty p eri od th e pro[...]