Honeywell DH90A1007 Installation Guide - Page 7

For HVAC Installer Only • Installation Guide W8150 Controller 6. Wiring Diagrams EARD6 Motorized damper Exhaust Air Fresh air Inlet hood Indoor air return Figure 4: Install with no forced air HVAC system. 4.5 Noise Abatement 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. DH90 White Red Yellow Blue Green 24VAC for powered Humidistat Humidity Control Régulateur d'humidité OUTDOOR TEMPERATURE -20 F -10 F 0 F +10 F +20 F Over 20 F -30 C -25 C -20 C -10 C -5 C Over 0 C HUMIDITY SETTING 15% 20% 25% 30% 35% 40% Dehumidistat Figure 5: Dehumidistat only-No fresh air ventilation. 5. Maintenance M23 5.1 Air Filter The DH90 is equipped with a MERV 11 media filter. This filter should be checked every three months and replaced every six months. Operating the unit with a dirty filter will reduce dehumidifier capacity and efficiency and may cause the compressor to cycle off and on unnecessarily on the defrost control. Figure 6: Dehumidistat including fresh air ventilation. Ventilation damper W8150A XFMR R C CAUTION: Operate the unit only with a genuine Honeywell filter installed to assure proper performance of the unit. Damper DH90 REMOTE AUX DAMPER 5.2 Optional Fresh Air Intake Check and clean the screen on the outdoor fresh air intake port seasonally. The screen may become plugged during the seasons when there are many particles in the outdoor air. Remote White Red Yellow Blue Green Ventilation Override Switch Humidity control Régulateur d'humidité Outdoor Temperature -20 f -10 f -30 c -25 c 0 f +10 f +20 f over 20 f -20 c -10 c -5 c over 0 c Humidity Setting 15% 20% 25% 30% 35% 40% Dehumidistat 24vac for Powered Humidistat