READ AND SAVE THESE INSTRUCTIONS ® VAPORMIST and VAPORMIST DI ® ELECTRIC STEAM HUMIDIFIERS For Ducted or Ductless Applications Installation Instructions and Maintenance Operations Manual UL LISTED CUL LISTED ä
TABLE OF CONTENTS TO THE PURCHASER AND INSTALLER Thank you for purchasing our VAPORMIST® humidifier. We have designed and built this equipment to give you complete satisfaction and trouble-free service for many years. Familiarizing yourself with this manual will help you to ensure proper operation of the equipment for years to come. This manual covers the installation and maintenance procedures for both the VAPORMIST AND VAPORMIST DI humidifiers. DRI-STEEM Humidifier Company VAPORMIST Diagrams ............
VAPORMIST® DIAGRAMS Figure 3-1: VAPORMIST Humidifier The VAPORMIST unit requires water conductivity of at least 100 micromhos/centimeter 1-½" or 2" Flexible vapor (2 grains per gallon) to hose connects to dispersion tube induct. operate. It will not operate with water treated Vapor Hose by reverse osmosis or Connector deionization processes.
INSTALLATION Locating and Mounting the VAPORMIST® Humidifier The VAPORMIST humidifier is designed to hang on a wall, and should be installed in a mechanical room or in a space located near an air duct system.
INSTALLATION VAPORMIST® Mounting Tube with Condensate Drain Line • Mount dispersion tube level. • For best vapor absorption, orient dispersion tube so that tubelets are directed against the air flow. Figure 5-1: Single Tube Insertion Length 2.5" Connecting Dispersion Tube to Humidifier • Connection can be made with vapor hose or rigid tubing • Vapor piping should have a minimum I.D. of 1½". • A minimum pitch of 2" per foot back to the humidifier should be maintained.
PIPING AND WIRING Water make-up piping may be of any code-approved material (copper, steel, or plastic). The final connection size is 1/4" NPT. In cases where water hammer may be a possibility, a shock arrestor should be considered. Drain piping may be of any code-approved material (copper, steel, or plastic rated for 212°F minimum). If drainage by gravity is not possible, a small lift pump should be used. (DRI-STEEM part #400280.) The final connection sizes are 3/4" O.D.
ELECTRICAL SPECIFICATIONS AND CAPACITIES/DIMENSIONS Table 8-1: Electrical Specifications and Capacities VM2 VM4 VM6 VM8 VM10 VM12 VM16* Op. Weight 83 lb. 38 kg 83 lb. 38 kg 93 lb. 42 kg 93 lb. 42 kg 93 lb. 42 kg 100 lb. 45.4 kg 100 lb. 45.4 kg Shp. Weight 78 lb. 35 kg 78 lb. 35 kg 85 lb. 39 kg 85 lb. 39 kg 85 lb. 39 kg 92 lb. 41.7 kg 92 lb. 41.7 kg VM25 VM34 AMPS: 120/1 17.0 -- -- -- -- -- -- -- -- *208/1/3 wire 9.6 19.2 28.8 38.
AREA-TYPE APPLICATION USING SPACE DISTRIBUTION UNIT (SDU) The SDU converts a VAPORMIST® duct humidifier into an area-type humidifier. Instead of the steam dispersion tube being located inside an air duct, the dispersion tube is built into the fan unit. A fan draws in room air and blows it across the dispersion tube, where it picks up the moisture and disperses it into the room.
AREA-TYPE APPLICATION USING SDU Table 9-1 lists the recommended minimum vertical (RISE) and horizontal (CARRY) clearances for area-type humidifiers at 50% and 60% RH of the space. The SDU contains a 435 cfm blower (120/1/60) wired independently of the VAPORMIST humidifier. A wiring diagram of the SDU is included with the unit. On a call for humidity, the humidifier will begin producing steam and the start relay will energize the SDU blower. When the steam reaches the SDU, a time delay switch is activated.
START-UP AND OPERATION Introduction After the system has been properly installed and connected to both electrical and water supplies, it may then be started. Start-up and Checkout Procedures Mounting Check mounting to see that the unit is level and securely supported before filling with water. Piping Verify that all piping connections have been completed as recommended and that water pressure is available.
START-UP AND OPERATION Test Cycling the Drain/Flush System The timer board contains four pairs of terminal pins which are marked 20, 40, 80 and “T” (TEST). To test: Important: Minimum water supply pressure is 10 psi. VAPORMIST DI Make-up Water Piping 1. Pull the pin block off the pair of pins in use, move it to the “T” pair, and push it on. In this unit the electronic probe control is replaced by a float valve and a float operated low water cut-off switch. 2.
MAINTENANCE VAPORMIST® Mineral Precipitate As evaporation takes place in a standard VAPORMIST unit, the minerals dissolved in the water come out of solution and a portion of these minerals float on the water surface. If not removed, these minerals will eventually form a sludge and settle to the bottom of the evaporating chamber. 6. Unscrew the probe housing, and remove any mineral build-up accumulated in the housing. 7. Clean the probe-rod assembly.
MAINTENANCE 6. Remove the evaporating chamber as follows: Disconnect the flexible connector tube on top of the evaporating chamber, the flexible overflow hose, and the flexible drain hose. All connections should be removed at the evaporating chamber. DO NOT DISCONNECT ANY OF THE ELECTRICAL CONDUITS. 12. Reconnect connector tube and flexible hoses. 7. Slide the evaporating chamber forward on the track. Remove the cover of the chamber, raise and slide into holding slots. Off-Season Shut-Down Procedure 8.
VAPORMIST® TROUBLE-SHOOTING GUIDE PROBLEM Humidifier will not heat Humidifier will not fill Humidifier does not stop filling CONTROL PANEL LIGHTS FILL READY DRAIN WATER POSSIBLE CAUSE RECOMMENDED ACTION Off Off Off Control transformer Verify control voltage across secondary leads of transformer. Reset transformer circuit breaker. Off On Off Humidistat is not calling Set humidistat to call. Inspect for faulty humidistat.
VAPORMIST® DI TROUBLE-SHOOTING GUIDE PROBLEM Humidifier will not heat Humidifier will not fill Water float valve does not close Reduced or no output even though water is at the proper level READY WATER POSSIBLE CAUSE RECOMMENDED ACTION Off Control transformer Verify control voltage across secondary leads of transformer. Reset transformer circuit breaker. Humidistat is not calling Set humidistat to call. Inspect for faulty humidistat. Safety controls open Check safety control.
REPLACEMENT PARTS Table 17-1: VAPORMIST (see drawing on page 16) No. Description Qty. Part No. 1 Tank 1 160012* 2 Cover 1 * 3 Thermo Cut-Out 1 409560-001 4 Cover, Heater Terminal 1 160750* 5 Gasket, Cover 1 160695* 6 Heater * 409600* 7 Knob, T-Handled Utility 4 700725 8 Connector, 3/8" flex.
REPLACEMENT PARTS Table 19-1: VAPORMIST DI (see drawing on page 18) No. Description Qty. Part No.
REPLACEMENT PARTS Table 20-1: Subpanel for VAPORMIST and VAPORMIST DI No. Description Qty. Part No. 1 Transformer, 120V, 24V Sec., 75 VA 1 408960 1 Transformer, 208/240/480V, 24V Sec., 75 VA 1 408965 2 Contactor, 24V, 30 amp 1 407001-007 2 Contactor, 24V, 50 amp 1 407001-009 3 Terminal Block, 3-Pole 1 408300-002 4 Switch, Door Interlock Electric 1 408470 5 Microprocessor Board, LW430 1 408641 OM-687 Table 20-2: Space Distribution Unit (SDU) No. Description Qty. Part No.
MAINTENANCE SERVICE RECORD DATE INSPECTED PERSONNEL OBSERVATION ACTION PERFORMED 21
TWO-YEAR LIMITED WARRANTY DRI-STEEM Humidifier Company (“DRI-STEEM”) warrants to the original user that its products will be free from defects in materials and workmanship for a period of two (2) years after installation or twenty-seven (27) months from the date DRI-STEEM ships such product, whichever date is the earlier.
