TrueSTEAM™ TM GETTING STARTED PROFESSIONAL INSTALLATION GUIDE INCLUDED IN THIS HUMIDIFIER BOX MOUNTING E H Tools needed to install TrueSTEAM TrueSTEAM Mounting bracket and hardware Backflow preventer Saddle valve E Water supply hose F Drain hose (10 feet) G Duct nozzle and gasket H Owner’s manual I Service label J HumidiPRO Digital Control* J VisionPRO IAQ control* Control based on model ordered. 3 APPENDICES Other Requirements TrueSTEAM flushes water at or above 140°F (60°C).
TrueSTEAM TM Critical Installation Information.................................2 Safety Definitions and Precautions...........................8 Setting Homeowner Expectations.............................9 Important Installation Requirements.......................10 Before Wiring TrueSTEAM........................................27 Using the DIP Switches......................................................27 STEP ONE: Remove the TrueSTEAM Cover......................
Critical Installation Information GETTING STARTED Water Quality and Hardness Proper filtration is critical for the operation of the TrueSTEAM humidifier. Failure to address water quality will lead to increased maintenance requirements and possible failure of the TrueSTEAM humidifier and its components. Be sure to complete the following procedure well in advance of installation to ensure any additional costs are documented and understood.
If water hardness is in range 1: If water hardness is in range 2: GETTING STARTED M29661 M29602 Honeywell recommends using the RO Filtration system (sold separately). Honeywell recommends using the polyphosphate filter (sold separately). Note: If the RO Filtration System is not used, set the homeowner’s expectation that additional cleaning beyond once per season will be necessary. Proceed to “Water Supply and Drain Connections” on page 13.
BEST PRACTICE Use TrueSTEAM with water that is less than 1 grain per gallon hardness. A properly functioning water softener will accomplish this. GETTING STARTED While the TrueSTEAM and its available filtration options help to address the issue of water quality and hardness, homes with extreme hard water problems should consider using a whole house water softener as the primary filtration device.
Proper Sizing of a TrueSTEAM Humidifier GETTING STARTED The Air-Conditioning, Heating and Refrigeration Institute (AHRI) has set guidelines for determining humidification capacity requirements. The recommendation is based on the cubic footage (volume) and type of home construction – assuming typical conditions. It is important to realize many homes will have humidification requirements that differ from the guidelines depending on how the circumstances differ from standard conditions.
Proper Sizing of a TrueSTEAM Humidifier GETTING STARTED Converting square footage to cubic volume requires multiplying the square footage by the ceiling height (i.e. 2000 square foot space with 10 foot ceilings is 20,000 cubic feet). In general, the higher the ceilings, the smaller the square footage space each TrueSTEAM model will cover since it must humidify the additional air volume. INCLUDE ALL SQUARE FOOTAGE OF THE HOME. FINISHED AND UNFINISHED.
BEST PRACTICE Complete this information sheet and leave on all jobsites GETTING STARTED In the event that a service technician needs to call in to the TrueSTEAM support techline, the following information is typically required for the Honeywell tech support specialist to accurately evaluate each situation. Failure to have this information ready may result in resolution delays or a potentially incomplete diagnosis.
Safety Definitions and Precautions Safety Definitions GETTING STARTED These safety terms identify information you must read. CAUTION: Indicates a hazardous situation which, if not avoided, could cause bodily injury or property damage. WARNING: Indicates a hazardous situation which, if not avoided, could result in death or serious injury.
Setting Homeowner Expectations Make sure the homeowners know what to expect from their TrueSTEAM humidifier. Discuss the following points with the homeowners and answer any questions they have. Achieving Humidity Setpoint. It may take up to a week of continuous operation to achieve the humidity setpoint. This depends on such factors as weather, size of home, furnishings in the home, and insulation. • Plastic or Rubber Odor. At startup, it is normal to smell a slight plastic odor in the home.
Important Installation Requirements GETTING STARTED Failure to comply with these requirements will result in voided warranty, improper installation, and service callbacks. Personal Safety • • • Wear safety glasses while installing TrueSTEAM. Do not cut into any air conditioning or electrical line. Follow professional safety standards and all local regulations. Mounting Location • • • • • • • • Mount TrueSTEAM in a level position to avoid water damage or heating element failure.
Choosing a Mounting Method Before installing TrueSTEAM in a home, you must decide which mounting method you want to use: Which is right for you? REMOTE MOUNTING – if a suitable mounting location can not be found on the supply duct: The TrueSTEAM can be mounted up to 20 feet away from the supply duct for select models. A remote hose must be installed to carry can be found on the supply duct.
Duct Mounting Before beginning Duct Mounting: I have confirmed local codes for proper draining practices for hot water I have chosen an installation location that meets the requirements on page 10 Follow these steps to mount TrueSTEAM directly to the supply duct of the homeowner’s HVAC equipment. MOUNTING STEP ONE: Select a Mounting Location 1 Choose a location that has access to a cold water supply pipe.
Flow STEP THREE: Install Mounting Bracket to the Duct 1 4” 4” i (m 4” MOUNTING ” 12n) Position the template on the supply duct: • Make sure the template is level and in the desired position on the duct. • Ensure proper clearances from A-coil. • Make sure the duct nozzle will have proper clearances from duct walls. • Minimum 4-inch clearance from nozzle outlet to any duct wall. • Minimum 24 inches of downstream open duct air space. (Needed to prevent water condensation.) Drill the 1-3/4 inch hole.
BEST PRACTICE Use a manual shutoff valve when tapping into a water line. Water Supply and Drain Connections STEP ONE: Connect the Cold Water Supply Do not use hot water supply. Cold water is required to cool boiling water to safe draining temperatures. 2 1 Insert one end of the water line into the water filter or reverse osmosis kit. Use the 1/4-inch plastic water line provided or a 1/4-inch copper water line. Apply a modest pull to ensure a tight fit.
STEP THREE: Connect TrueSTEAM to the Cold Water Pipe 1 Connect one end of the remaining length of water line to the backflow preventer. Apply a modest pull to ensure a tight fit. See “Reverse Osmosis Filter” on page 23 if using the Reverse Osmosis Filter. 2 MCR32901 Connect the other end of this line to the saddle valve or T-fitting and manual shutoff valve.
Other Plumbing Options The following diagrams are for applications where standard draining to a floor drain is not available.Choose the plumbing option that suits your installation. Use A, B, C, or D based on type of pipe or condensate pump. Consult and follow local plumbing codes in addition to these instructions. For All Options Shown: • • Support rubber hose every 6 in. PVC must be schedule 40 or higher rating. • • All plastic pipe joints are welded.
Option 2: Plumbing to a dedicated trap. 3/4 IN. MNPT X SWEAT 3/4 IN. FNPT X 1-1/2 IN. PVC VENTED PER LOCAL CODE 1-1/2 IN. (MINIMUM) PVC PIPE 1-1/2 IN. PVC ALL PLASTIC PIPE JOINTS ARE WELDED 3/4 IN. MNPT X 3/4 IN. CPVC 3/4 IN. FNPT X 1-1/2 IN. PVC HOSE CLAMP 3/8 IN. BARB X 3/4 IN. MNPT 3/4 IN. FNPT X 1-1/2 IN. PVC 1-1/2 IN. MINIMUM TRAP (OR SIZE PER LOCAL CODE) SIZE TO FIT PUMP OUTPUT M28679 PLUMBING Option 3: Plumbing to sink with a dedicated trap. 3/4 IN. MNPT X SWEAT 3/4 IN. FNPT X 1-1/2 IN.
Option 4: Plumbing to sink trap. 3/4 IN. MNPT X SWEAT 3/4 IN. FNPT X 1-1/2 IN. PVC 1-1/2 IN. (MINIMUM) PVC PIPE 1-1/2 IN. PVC 3/4 IN. MNPT X 3/4 IN. CPVC ALL CONNECTIONS FROM SOLENOID VALVE TO DRAIN TRAP ARE SEALED SINK WELD 3/4 IN. FNPT X 1-1/2 IN. PVC HOSE CLAMP 3/8 IN. BARB X 3/4 IN. MNPT 3/4 IN. FNPT X 1-1/2 IN. PVC COUPLING 1-1/2 IN. PVC TEE WELD 1-1/2 IN.
BEST PRACTICE If humidifier is in finished space, always install a drip pan with wet switch. Honeywell recommends Diversitech WS-1 (wiring shown here). Remote Installation Use remote installation when no suitable duct mounting location can be found on the homeowner’s HVAC system. For detailed instructions on remote installation, see the TrueSTEAM Remote Mount Kit Installation Instructions (69-2317).
BEST PRACTICE Always inspect the hose installation after at least 1 hour of steam production to confirm that there are no sags in the hose or leaks at the connection points. Cut a slit in the insulation half way around the hose. Do not cut into the rubber steam hose. Insert the hose clamp into the slit and hook it onto the rubber hose. 3 inches minimum clearance from nozzle outlet to duct. Nozzle at upward pitch. 24 inches open air downstream. Minimum upward pitch of 2 inches per foot.
Proper Hose Installation Furnace or Mechanical Room Remote Note: If air handler location temperatures will drop below freezing at any time, TrueSTEAM must be mounted in a conditioned space, running a remote hose to the duct. Duct Mount Remote M24781 CAUTION Hot water temperature above 140°F (60°C) can cause burns from scalding. M24936 Living Area Remote Options Garage Remote APPENDICES M24786 M24785 Draining water may be hot. Ensure drain outlet not exposed.
20 FT MAX WITH TRAP 2 IN. PER FT 5 FT MAX IF NO SLOPE P - TRAP TYPICAL INSTALLATION WHEN TrueSTEAM IS ABOVE REMOTE NOZZLE 20 FT MAX 10 FT MAX 3 FT max. DRAIN GENTLE BEND 2 IN. PER FT DRAIN P - TRAP 2 IN. PER FT 2 IN. PER FT OBSTRUCTION SUPPORTED REMOTE HOSE DRAIN P - TRAP NOTE: HEIGHT OF TRAP MUST BE GREATER THAN THE DUCT STATIC PRESSURE M24915 NOTES: • Slope hose up in direction of steam flow at 2 in. per foot; • Slope hose down in direction of steam flow at 3/4 in.
Never support the hose by attaching it to materials that could potentially sag over time (such as PVC) or cannot support the remote hose weight. AVOID THESE COMMON MISTAKES M28672 Sharp hose bends. Horizontal run does not have minimum pitch of 2 in. per ft. Sharp hose bends. Hose not continuously supported at least every 12 in., resulting in hose sag. Sharp hose bends. Does not have at least 6 in. vertical rise immediately out of humidifier, and nozzle is not pitched up.
Reverse Osmosis Filter If the TrueSTEAM owner’s home has water tested in range 2 on the water test strip, the Honeywell Reverse Osmosis (RO) Filtration System (#S0045947) should be installed in the water supply line. Failure to use the RO kit in these situations will lead to increased maintenance requirements and possible failure of the TrueSTEAM and its components. The RO Filtration System consists of a base chassis, with three filter cylinders: • Water first passes through the #1 sediment removal filter.
Setting up the RO Filter See the instruction sheet packaged with the RO Filtration System for complete installation instructions. 6 ld Co r ate 1. Mount the base chassis to a surface capable of holding up to 7 pounds between the home’s cold water line and the TrueSTEAM location. (Mounting hardware is provided.) ly pp Su W 2. Connect the 1/4-inch white water line to the home’s main cold water supply. Connect the other end to the inlet port on the base chassis.
Maintaining the RO Filter Honeywell recommends the following maintenance steps be performed at least once each humidification season. Remove filters #1, #2, and #3, in this order. APPENDICES Reconnect filters in this order: • Empty water from the #3 filter and reconnect to the RO System. (Do not replace.) • Connect a new #2 filter. • Connect a new #1 filter.
Before Wiring TrueSTEAM Before wiring the TrueSTEAM: I will read the section “Understand the DIP Switches” beginning on this page I will read the section “Deciding on the Wiring Configuration” beginning on page 28 Using the DIP Switches The wiring features are configured by DIP settings, which are described under the TrueSTEAM cover. STEP ONE: Remove the TrueSTEAM Cover CAUTION: Voltage Hazard. Be sure TrueSTEAM is not plugged in when removing the cover. WIRING Loosen the cover screw.
1 2 3 4 5 6 On Off M29610 1 2 3 4 5 6 On Off M29611 1 2 3 4 5 6 On Off M29612 WIRING 1 2 3 4 5 DIPS 3, 4, and 5 are used for humidifying. DIP 3: Used to enable wireless operation. • If DOWN (default), wireless terminal is disabled. • If UP, wireless terminal is enabled. DIP 4: Used to configure power monitoring. • If DOWN (default), TrueSTEAM looks for R input before allowing humidity. • If UP, TrueSTEAM does not look for R Input before allowing humidity.
Deciding on the Wiring Configuration Before making decisions about wiring configurations: I understand when to use the DIP switches and how to set them for the humidity control. TrueSTEAM wiring is different from evaporative pad humidifier wiring. In addition to solenoid water valve actuation, TrueSTEAM can monitor system power and regulate system fan operation.
IMPORTANT NOTE: The images below are not complete wiring diagrams. It only depicts power monitoring and is not meant to be a stand alone diagram. Please refer to the “Wiring the TrueSTEAM” section in the following pages for complete wiring diagrams.
STEP TWO: Make System Fan Regulation Decision System Fan Regulation is a configuration that requires TrueSTEAM to monitor the HVAC system fan and make sure the fan is on if humidity is needed. This helps ensure that airflow will distribute humidity into the living space, and prevents water condensation in the duct.
IMPORTANT NOTE: The images below are not complete wiring diagrams. It only depicts power monitoring and is not meant to be a stand alone diagram. Please refer to the “Wiring the TrueSTEAM” section in the following pages for complete wiring diagrams. WIRING BASICS: CONFIGURATION 1 When using a thermostat with integrated humidity control (such as VisionPRO IAQ or Prestige): Thermostat with Humidity Control HVAC System 1 2 3 TrueSTEAM HUM R C HUM • • • A thermostat controls the fan and TrueSTEAM.
STEP THREE: Make Add-On Air Proving Decision In addition to monitoring system power and fan regulation, TrueSTEAM can monitor physical air movement through an optional add-on air proving device. If an air proving device is added, TrueSTEAM can create steam only if the fan is moving air through the supply duct. Honeywell HIGHLY recommends adding an Add-On Air Proving Device for ALL TrueSTEAM™ installations. IMPORTANT NOTE: The image below is not a complete wiring diagram.
Wiring the TrueSTEAM You will need to wire TrueSTEAM using the diagram that applies to your humidity control. Remember to include the wiring and DIP settings required for power monitoring, system fan regulation, and add-on air proving (if used). Using the Terminals Use the terminals (found inside the cover) to wire TrueSTEAM to the humidity control and the HVAC system.
Using the Correct Control Diagram CAUTION: Voltage Hazard. Before wiring to HVAC terminals, disconnect HVAC equipment power. Make sure TrueSTEAM is not plugged in. Follow the diagram for control options 1 through 14 to wire the TrueSTEAM. Refer to the installation manual provided with the control for additional instructions if needed.
Installing the Humidistat Remote Mount Installation NO YES Choose a location in the living area. NO NOTE: Select a location clear of drafts or excessive humidity. Avoid mounting near doors or windows, or in bathrooms or kitchens. OR M34567 Duct-Mount Installation (recommended) 1. Choose a location on the RETURN duct. 2. Separate wallplate from humidistat.
Installing the Humidistat Duct-Mount Installation (continued) 5. Insert the duct tube. 6. Secure the wallplate. Insert the duct tube through the wallplate before securing to the duct. M34582 Secure the wallplate to the duct with sheet metal screws (provided). M34671 7. Run wires through the back plate. WIRING C R U U S S RUN WIRES THROUGH THE TOP OR BOTTOM CHANNEL M34610 Run wires through the top or bottom channel on the back plate when duct-mounted.
Mounting the Outdoor Sensor (Not required if window protection isn’t needed) Location Mount the sensor where: • • • • • it cannot be tampered with. there is good air circulation. surface is flat. wire distance between sensor and humidistat is less than 200 feet. it can measure true outdoor ambient temperature. Do NOT mount the sensor: • • • in direct sunlight. where snow, ice or debris can cover it. where hot or cold air blows on the sensor.
Wiring the Outdoor Sensor CAUTION: Electrical Interference (Noise) Hazard. Can cause erratic system operation. Keep wiring at least one foot away from large inductive loads such as motors, line starters, lighting ballasts and large power distribution panels. Use shielded cable to reduce interference when rerouting is not possible. Be sure wires have a cable separate from the thermostat cable.
Mount Humidity Control WALLPLATE TABS Align the 4 tabs on the wallplate with the slots on the back of the control, then push gently until the control snaps in place. SLOTS ON BACK OF HumidiPRO TABS M34583 Checkout Allow C7089B Outdoor Sensor to absorb outdoor air for a minimum of twenty minutes before taking a reading. With an accurate thermometer (±1°F [0.5°C]), measure the temperature at the sensor location, allowing time for the thermometer to stabilize before reading.
Advanced Installer Setup Honeywell has already programmed this control to work properly in most applications. However, you can adjust the advanced settings by following the steps below. To begin, press and hold the p and LIGHT buttons until the display changes. 1 Done Press p or q to change settings. Press NEXT to advance to the next function. Press DONE to exit and save settings.
Frost Index Honeywell HumidPROTM Frost Index 1 2 3 4 5 6 7 8* 9 10 -10°F 10 10 10 10 10 10 15 15 21 21 29 29 35 39 35 56 35 60 35 60 0°F 10 10 10 10 14 14 19 19 26 26 34 34 35 46 35 60 35 60 35 60 Outdoor Temp 10°F 20°F 11 11 17 17 15 15 21 21 19 19 26 26 25 25 32 32 32 32 35 38 35 39 35 48 35 52 35 58 35 60 35 60 35 60 35 60 35 60 35 60 30°F 25 25 29 29 34 34 35 39 35 48 35 56 35 60 35 60 35 60 35 60 40°F 35 36 35 39 35 46 35 52 35 58 35 60 35 60 35 60 35 60 35 60 *Black Numbers show highest humidi
Startup and Checkout When installation is complete, plug TrueSTEAM in and turn the humidity control on. Make sure it is running properly before turning the system over to the homeowner. Once TrueSTEAM is running, day-to-day operation is hands-free, except for occasional cleaning. The homeowner can use the control to adjust the humidity setpoint, adjust the frost setting (if used), or turn TrueSTEAM off as desired. Slide the cover into place and secure with the cover screw.
Routine Maintenance TrueSTEAM automatically flushes the tank throughout the humidifying season. This lowers the water hardness concentrated in the tank, and slows the accumulation of solid minerals. Automatic Cleaning Cycle • • • The automatic cleaning cycle takes about 45 minutes. During this time, TrueSTEAM will not produce any steam. Cold water will enter the tank to lower water temperature below 140°F (60°C) before draining.
BEST PRACTICE Perform all cleaning steps at least once per humidification season. CAUTION: Scalding hazard. • If you override the cooling action of the flush cycle, the tank will empty immediately, regardless of water temperature. Make sure the drain can handle up to 212°F (100°C) if you do this. • During manual drain, initial water temperature may be above 140°F (60°C). Scalding water could splash out of the drain. Use caution when pressing the Drain button.
CAUTION: Scalding hazard. Do not attempt to remove TrueSTEAM from the mounting bracket during operation or when the tank is full of water. The heating element could be hot when tank is removed. Failure to comply could result in severe scalding. STEP TWO: Remove the Water Tank Make sure the tank is empty. The Empty light turns on when it is. Turn the manual shutoff valve to the “Unlock” position. Grip the white water valve arm and slide it back to disengage from the tank’s black spool.
STEP THREE: Clean the Tank Use tap water to flush loose minerals from the tank: • Sediment screen at tank’s bottom is removable. • For a more thorough cleaning, soak tank in water with CLR®, LimeAway® or white vinegar. Then rinse clean. • Tank is dishwasher safe. • Do not use hydrocarbon-based cleaners. 1 Unplug the power cord and carefully rub minerals off of the heating element and tank walls. Clear the sensor compartment holes of debris, if present.
Changing the Water Filter Replace the polyphosphate water filter at least once every humidification season. 1 Press down on the filter collar ring and pull out the 1/4inch water line from each side of the filter. 2 3 Turn the water supply off at the saddle valve or T-fitting and manual shutoff valve. Insert the 1/4-inch line into a new filter. Apply a modest pull to ensure a tight fit. 4 Be sure to install the new filter correctly.
Water Level Sensor Troubleshooting Steps WARNING: Electrocution Hazard. This test should be done when current is not present on pins. Always unplug the humidifier before testing. Test Setup Good Water Sensor • The water sensor is good if all pins show an infinite reading. • Remove and drain the tank. The tank must be empty. Remove the connector from the water level sensor. Bad Water Sensor Test Pins Test is done in 5 pins as shown in the figure below.
STEP FIVE: Reinstall the Tank 1 2 Before reinstalling the tank and cover, perform these checks: • Clear any dust from the ventilation holes in the cover. • Clear any debris from the water drain tube. • Make sure the water tank gasket seal is seated properly in the TrueSTEAM base. Make sure the gasket is in good condition (no cracks or tears) before attaching the tank. Attach tank by securing the latch and plug in TrueSTEAM.
Troubleshooting TrueSTEAM has internal system diagnostics that monitor operation, maintenance schedules, and faults. If a system fault is detected, TrueSTEAM will attempt to recover up to five times in a 24-hour period. • • • If TrueSTEAM is unable to recover by itself within 24 hours, the red Service light blinks in a series that indicates the fault detected. Refer to the table below for the fault indicated, along with the steps to fix TrueSTEAM.
No. of Service LED Blinks Fault Description Auto-Recoverable? Steps to Fix (Performed Only By Professional HVAC Technician) 4 Heating element No If this is a new install: overheated. 1. Reset the error code and power cycle the unit. 2. If the error code comes back, replace the unit. If the unit has been in service while: 1. Troubleshoot the water sensor 2. If troubleshooting indicates a sensor issue, replace the sensor. 3. If that does not resolve the issue the entire unit will need to be replaced.
No. of Service LED Blinks Fault Description Auto-Recoverable? Steps to Fix (Performed Only By Professional HVAC Technician) 7 HVAC power Yes, system will 1. Unplug and replug TrueSTEAM in to see if power returns. not present. return to “Ready” 2. If power does not return, ensure HVAC equipment has power. if fault no longer 3. Check circuit breaker or replace fuse if circuit is tripped. exists in one hour. 4. Unplug TrueSTEAM and remove cover.
No. of Service LED Blinks Fault Description Auto-Recoverable? 13 Tank failed to drain. No Steps to Fix (Performed Only By Professional HVAC Technician) CAUTION: Water in tank may be hot (>140°F [60°C]). 1. Press the Drain button. 2. If tank fails to drain, wait for water in tank to cool. 3. Ensure tank water is cool. Once it is, follow tank cleaning steps under “Manual Cleaning Cycle” in manual. 4. Ensure drain tube is not pinched, clogged or blocked 5.
A: Specifications Humidifying Capacity Electrical Ratings and Tolerances HM506: up to 6 gallons per day (gpd) Input Ratings (23 liters per day [lpd]) • Power Supply: 120VAC +10-15%, 60Hz HM509: up to 9 gpd (34 lpd) - HM506: 840W at 120VAC at full load HM512: up to 12 gpd (45 lpd) - HM509: 1200W at 120VAC at full load - HM512: 1440W at 120VAC at full load Humidified Area • HM506: 7A, 120VAC HM506: 4,000–14,400 cubic feet • HM509: 10A, 120VAC HM509: 8,000–18,400 cubic feet • HM512: 12A, 12
B: Advanced TrueSTEAM Wiring CAUTION: Voltage Hazard. Before wiring to HVAC terminals, disconnect HVAC equipment power. Make sure TrueSTEAM is not plugged in. Follow the diagram for control options 1 through 14 to wire the TrueSTEAM. Refer to the installation manual provided with the control for additional instructions if needed.
B: Advanced TrueSTEAM Wiring OPTION 3: VisionPRO IAQ Wiring with Fan Delay • Follow this diagram if you are using VisionPRO IAQ with TrueSTEAM’s fan-delay feature. • The system fan will turn on when the water temperature reaches 176°F (80°C). • Set installer setup #0374 to 3.
B: Advanced TrueSTEAM Wiring OPTION 5: Prestige IAQ with fan delay • Follow this diagram if you are using Prestige IAQ with TrueSTEAM’s fan-delay feature. • The system fan will turn on when the water temperature reaches 176°F (80°C).
B: Advanced TrueSTEAM Wiring OPTION 6: Prestige IAQ or All New VisionPRO without fan delay • Follow this diagram if you are using Prestige IAQ to turn system fan on immediately with humidity call.
B: Advanced TrueSTEAM Wiring OPTION 7: Wiring TrueSTEAM with zoning RH RC R W1/E W Y W2 Humidistat W3 Equipment Y1 24V Y2 HUM G HUM AFS 24V G C Furnace HUM O HUM B 1) C DS/BK 3 4 5 6 On GT HZ432 2 1 R RT Off GF (AFS Monitor Recommended) EXT TrueSTEAM Humidifier 2) 2 1 3 4 5 6 On Off Alternative (Power Monitor Setting) M32920 OPTION 8: Wiring Prestige or All New VisionPRO with wireless TrueSTEAM THM4000R1000 THX9321R SUBBASE APPENDICES 1 2 3 4 5 6 ON OFF
B: Advanced TrueSTEAM Wiring OPTION 9: Prestige IAQ or All New VisionPRO controlling TrueSTEAM with zoning with fan delay (recommended) THX9421R HZ432 AFS FURNACE 1 2 3 4 5 6 TrueSTEAM HUMIDIFIER THM5421R ON OFF AFS MONITOR RECOMMENDED M33055A APPENDICES TrueSTEAM Humidification System 69-2285—05 61
B: Advanced TrueSTEAM Wiring OPTION 10: TrueSTEAM wired to a dedicated fan/blower 1 AFS TrueSTEAM C R TrueIAQ TRANSFORMER L1 (120 VOLT HOT) 3 L2 L1 1 R8222 L2 (120 VOLT COMMON) 1) 1 2 3 FAN M33056 4 5 6 2) On On Off Off (AFS Monitor Recommended) 1 2 3 4 5 6 Alternative (Power Monitor Setting) M32922 ISU 25 must be set to 3 APPENDICES 1 62 TrueSTEAM Humidification System 69-2285—05
B: Advanced TrueSTEAM Wiring OPTION 11: Prestige IAQ or All New VisionPRO controlling Redlink wireless TrueSTEAM with zoning NOTE: To get air humidity to all zones in idle mode you would need to jump the G on all zones being used and verify that the thermostat does not have a Y/G interconnect. FocusPro, VisionPro, and Prestige models would work for this application.
B: Advanced TrueSTEAM Wiring OPTION 12: VisionPRO IAQ controlling 2 TrueSTEAM humidifiers COMMUNICATION LED COMMUNICATION TERMINALS 6 TH9421C1004 CONV HP 1 24 VAC FURNACE AFS 3 THM5421C1008 1 2 1 4 2 3 4 5 6 On 4 Off AFS Monitor Recommended APPENDICES TrueSTEAM 1 64 5 M32914 TrueSTEAM 2 1 THE YTH9421C1002 KIT INCLUDES THE TH9421C1004 VISION-PRO IAQ THERMOSTAT AND THE THM5421C1008 EQUIPMENT INTERFACE MODULE.
B: Advanced TrueSTEAM Wiring OPTION 13: Prestige IAQ controlling 2 TrueSTEAM humidifiers THM5421R1005 5 6 FURNACE IAQ DEVICE 5 2 AFS 1 SENSOR TYPE 1 2 3 4 5 6 3 3 ON OFF AFS MONITOR RECOMMENDED TrueSTEAM 1 4 TrueSTEAM 2 A DOUBLE-POLE RELAY SUCH AS THE R8228D1018 IS REQUIRED. 2 AN AIR-FLOW SWITCH IS RECOMMENDED. IF AN AIR FLOW SWITCH IS NOT USED THERE DOES NOT NEED TO BE A WIRE ATTACHED TO C ON THE TrueSTEAM AND THE #4 DIP SWITCH NEEDS TO BE SET TO “ON”.
B: Advanced TrueSTEAM Wiring OPTION 14: TrueSTEAM humidifier wired to equipment with powered terminals with TrueSTEAM controlling the fan 24 V 1 24 V 1 HUM HUM 3 C GT AIR-FLOW SWITCH 2 R RT GF EXT HUM NOTES: W2 Y1 DHUM G COM W/W1 Y/Y2 R 3 TrueSTEAM FURNACE TERMINALS 1 YOU MUST ADD A 24VAC ISOLATION RELAY BETWEEN THE TRUESTEAM HUMIDIFIER AND THE AIR HANDLER. AN R8222B1067 COULD BE USED.
C: Parts List Figure Reference Part Number Part Description 1 50024917-001 Remote Mounting Kit (with 10-foot hose) 1 50024917-002 Remote Mounting Kit (with 20-foot hose) 2 50028004-001 Cover 3 50028003-001 Duct Nozzle 4 50028001-001 Remote Nozzles 5 50020012-001 Mounting Bracket 6 50027997-001 Solenoid Valve 7 50028044-001 Polyphosphate Filter 8 50033181-001 HM512/HM509 Water Tank 8 50033182-001 HM506 Water Tank 9 50027998-001 Water Level Sensor Assembly 10 32001616-001
Automation and Control Solutions Honeywell International Inc. 1985 Douglas Drive North Golden Valley, MN 55422 http://customer.honeywell.com ® U.S. Registered Trademark. © 2013 Honeywell International Inc. 69-2285—05 M.S. Rev. 05-13 Printed in U.S.A.
