User manual HONEYWELL HE420B

[. . . ] HE420A, B and HE460A, B Steam Power Humidifiers PRODUCT DATA FEATURES · Humidifies the air without a call for heat from the thermostat so relative humidity fluctuates less, optimizing homeowner comfort. · Ideal for homes with extensive woodwork, hardwood floors, antiques, oil paintings, leather furniture, pianos, and fine collectibles. · Minimal amount of water needed for energy efficient operation. · Low water cut-off switch and built-in overflow protection are integral safety features. [. . . ] Attach the water feed line and allow the unit to fill until the float valve shuts off the incoming flow of water. Lower the water level by pressing the float down with one hand and pulling up on the center of the float arm with the other hand. 9. IMPORTANT The Honeywell S688A Fan Sail Switch must be installed if the system fan is on continuously. Heat Pumps No wiring diagrams can be suggested due to the many variations and wiring complexity of heat pumps. If the humidifier control fan operation is desired, be sure to design a safe control circuit using equipment diagrams and tracing the equipment wiring. In heat pump installations, a fan sail switch must be installed due to the almost continuous operation of the system fan. Wire the fan sail switch in series with the low voltage humidity control circuit so the humidifier is on only when the fan is operating; however, the humidifier, in most cases, does operate in conjunction with the system fan. CAUTION Flooding Hazard. Inadequate support of the float arm can lead to valve seat damage and result in water leakage. Support the float arm during adjustment. TO RAISE WATER LEVEL PUSH DOWN PLUMBING HUMIDIFIER TO LOWER WATER LEVEL CAUTION Chemical Hazard. Be sure to install the chlorine removal filter (provided) to prevent humidifier corrosion. Either hard or soft water can be used in the humidifier. HOLD DOWN PUSH UP M10581 Fig. Verify the water level by removing enough water to allow the float valve to automatically fill and shut off the water. IMPORTANT Use only copper tubing to plumb the humidifier. 68-0192--2 6 HE420A, B AND HE460A, B STEAM POWER HUMIDIFIERS FINISH MOUNTING AND PLUMBING HUMIDIFIER 1. Mount humidifier as instructed in the Select Location and Mount section. Connect the remaining end of the tubing to the humidifier float valve. Open the saddle valve so that the water flows slowly into the water pan. Check the compression fittings at the saddle valve and the float valve. Tighten the fitting slightly to stop any leakage. DRAIN FITTING CLAMP STEAM HUMIDIFIER HC40 AUTOMATIC FLUSHING TIMER IMPORTANT Keep all drain lines away from sharp edges. 6. Connect the overflow provision of the humidifier to a suitable waste drain. (16 mm) ID garden hose can be easily attached to the overflow fitting. NPT fitting (not supplied) to connect the overflow provision of the humidifier. CLAMPS (2) DRAIN TUBING PLUMB TO WASTE DRAIN M10587 Fig. Typical installation of automatic flushing timer on HE420A, B, HE460A, B Humidifiers. Mounting and Plumbing IMPORTANT Some installations require additional fittings. Be sure all fittings are brass or stainless steel to prevent corrosion. 1. Cut a piece of drain tubing to connect the humidifier fitting to the timer fitting. INSTALLING HC40 AUTOMATIC FLUSHING TIMER IMPORTANT All plumbing and electrical connections must comply with all local codes and ordinances for the area. Location CAUTION Flooding Hazard. [. . . ] Turn off the water supply. 9 68-0192--2 HE420A, B AND HE460A, B STEAM POWER HUMIDIFIERS IMPORTANT · Replace the float valve when it shows any signs of deterioration. Reset the water level: IMPORTANT Be sure the humidifier power is off and there is no water in the humidifier. Vacation When you leave on vacation, turn off the humidifier water supply and the humidity control. When you return, turn on the humidifier water supply and reset the humidity control to restart the humidifier. CAUTION Flooding Hazard. Inadequate support of the float arm can lead to valve seat damage resulting in water leakage. [. . . ]