Honeywell Hm509h8908, Hm512, Hm509, Hm506h8908 Owner's Manual

TrueSTEAM

69-2036EFS-07

As Easy as 1-2-3-4

PROFESSIONAL INSTALLATION GUIDE

Mount

Plumb

Hang

Wire

See inside for detailed instruction and remote mounting options!

Installation Guide

Table of ConTenTs

Installation Recommendations ...................................................... 1

List of tools/supplies ...................................................................... 2

Safety Precautions ......................................................................... 3

Duct Mount Instructions

Installation ....................................................................................... 4

Remote Mount Instructions

Installation ....................................................................................... 6

Plumbing and Wiring

Plumbing ....................................................................................... 12

Wiring ............................................................................................ 13

DIP Switch Selection .....................................................................17

Troubleshooting ............................................................................ 18

Cleaning and Seasonal or Vacation Maintenance ...................... 22

Additional Information

Parts List ....................................................................................... 24

Need Help?

For assistance with this product please visit http://yourhome.honeywell.com

or call Honeywell Customer Care toll-free at 1-800-468-1502

Read and save these instructions.

® U.S. Registered Trademark.

Patents pending.

69-2036EFS—07 ii

TrueSTEAM Humidification System

Make your TrueSTEAM installations accurate and efficient by addressing these commonly asked questions:

Sizing for the Job

1. Selecting the appropriate humidifier for the job is critical: The table below illustrates the square footage a TrueSTEAM humidifier can serve. It is not recommended to install a 6 gallon device in a home larger than 2000 square feet.

Square Feet of Space 500 1000 1500 2000 2500 3000 ARI* Recommended Output Delivery (GPD) 0.1 2.2 4.4 6.5 8.6 11.7

TrueSTEAM HM512 - True 12 Gallons TrueSTEAM HM509 - True 9 Gallons TrueSTEAM HM506 - True 6 Gallons

* ARI Guideline F-2007 for maintaining 35% RH in a tight, residential four-person home with

8-ft. ceilings. Outdoor conditions = 20ºF and 70% RH.

Installation Check-out List

• Install the in-line water filter and back-flow prevention valve.

• Check that the main water supply line is open.

• Ensure there are no water leaks/drips at any of the water connections.

• Plug into a circuit with at least enough capacity to power the unit.

• Generate a call for humidity from the control and ensure TrueSTEAM fills and the Humidify light turns on, indicating steam is being generated.

• Test the drain by pressing the EMPTY button until the Clean Tank light begins blinking, indicating a drain cycle has begun.

NOTE: It may take approximately 10 minutes for the tank to fully flush and drain. TO BYPASS

AND DRAIN IMMEDIATELY, Press and hold the EMPTY button again while the Clean Tank light is blinking. This will bypass the flush and immediately drain the tank. TO STOP draining, press the Reset button.

• Mount the provided yellow tank service sticker on the duct/wall near the unit. Ensure the drain hose is secured to prevent inadvertent disconnection. Check that the hose is plumbed to a drain/condensate to prevent water spurting.

  69-2036EFS—07

Installation Guide

InsTallaTIon ReCommendaTIons

Setting Homeowner Expectations for the TrueSTEAM Experience:

It may take up to a week of continuous operation to achieve the humidity set point, depending on weather, size of home, furnishings in the home, insulation, etc.

If using a six (6) gallon unit, the most appropriate setpoint is 30-35% or until there is condensation on the windows, then lower the setpoint (if not in frost protection mode). If the home can’t achieve the setpoint, the unit may be under-sized (if home is under 2000 sq ft, this can also be due to insulation, windows, arid climate, etc.) or the outdoor temperature may be too low to maintain adequate humidity levels. Honeywell recommends waiting for the temperature to moderate closer to 20°F (-6°C).

If this occurs and the selected humidity levels are not achieved, then a larger capacity model may be needed.

For the first week of operation, it is normal to experience a slight plastic odor in the home, depending on the amount of supplied ventilation. If the remote hose is used, there may be a slight rubber odor. These odors will dissipate within days of installation.

If the homeowner sees that TrueSTEAM is not humidifying but there is a call for humidity, it is likely the unit is operating in drain cycle mode. Ask the homeowner to check again in an hour if they are concerned the device may not be operating.

If the Call Service light is blinking, instruct the homeowner to press and hold the Reset button to clear the fault. If the fault doesn’t clear, unplug the power to TrueSTEAM and plug back in to the electrical outlet. Wait 24 hours prior to calling a contractor. The call service light may be blinking due to a low voltage condition in the area and will reset to operate correctly when full power is restored.

There may be a slight increase in the homeowner’s energy consumption. However, when operating correctly, TrueSTEAM will make the home feel warmer, allowing the homeowner to lower the temperature setting on the thermostat. Every degree lower on the thermostat can save up to 3% on heating costs.

69-2036EFS—07 2

TrueSTEAM Humidification System

WhaT you WIll need To InsTall TRuesTeam

Tools/Hardware needed:

• Wire stripper/cutter

• Drill or duct-cutting tool

• 1-3/4-in. hole saw

• 1/8-in. drill bit

• Phillips and slotted (or Torx) screwdriver

• 18-gauge thermostat wire (5 or 2 conductor)

Material Provided:

• 1/4-in. copper or plastic water line

• 1/2-in. drain hose and clamps

• Mounting bracket and hardware

• In-line water filter* (50028044-001)

• Saddle valve

• Back-flow valve (50030142-001)

Options:

• Remote Installation Kits

– 10-foot hose and nozzle kit (50024917-001) – 20-foot hose and nozzle kit (50024917-002)

• Humidity Controls

– Manual Humidistat (H8908ASPST) – TrueIAQ (DG115EZIAQ) – VisionPRO IAQ (YTH9421C1010)

• Water line T-fitting

• Manual shut-off valve

• Remote hose P-trap

• Remote mount duct board adapter kit (32005530-001)

• Differential pressure switch (50027910-001)

* Warranty requires in-line water filter installation with regular service.

 3 69-2036EFS—07

Installation Guide

safeTy PReCauTIons

CAUTION: Voltage Hazard. Can cause electrical shock or equipment damage. Disconnect HVAC equipment before beginning installation.

Safety Precautions

• Do not direct the steam nozzle at people.

• If used near a pool or spa, ensure the TrueSTEAM can not fall into the water or be splashed. Also, ensure the TrueSTEAM is plugged into a GFI ground fault interrupt outlet.

• Water inside tank can be very hot. Follow installation instructions and service steps exactly as given in the technical literature.

Warning: Electrocution, Heavy Equipment, and Chemical Hazard.

Can cause death, blindness, water damage to home and heating element failure.

• Do not cut into any air conditioning or electrical line

• Wear safety glasses when cutting or drilling.

• Mount the humidifier in a level position to avoid water damage or heating element failure.

• Reinforce duct as necessary to ensure stability.

The preferred installation location is on the warm or supply side of the furnace. If that location is not possible, the steam nozzle should be inserted a minimum of 12 in. upstream of the furnace filter. Depending on the location and the duct rigidity, additional duct reinforcement may be necessary.

Warning: Steam Condensation, Fire, and Freezing Water Hazard.

Can cause failure of fan or limit control or result in water damage to home.

• Do not install the humidifier where the ambient temperature is lower than 32°F (0°C) or higher than 120°F (49°C).

• Do not install the humidifier through sidewalls of a return air duct made of wood (e.g., floor joist).

• The mounting area must be strong enough to support the humidifier’s weight when it is full of water (approximately 12 to 15 lbs.), and to hold the humidifier in a level position for safe, reliable operation. Otherwise, additional duct or wall reinforcement will be necessary.

• If the ducting has exposed insulated materials on the interior, ensure the nozzle extends beyond the insulation by clearing away excess insulation at the insertion point. You may wish to replace a section of insulated duct (approximately 6 in. x 6 in.) with rigid, non-insulated sheet metal to ensure effective installation.

• Mount the unit where it will have smooth air flow across the end of the steam nozzle.

• Allow at least 1 foot clearance to ventilation holes in humidifier’s cover. Do not cover these holes. Covering them can increase the internal operating temperature of the humidifier and shorten the humidifier’s life.

• Allow at least 4 inches of clearance between the steam nozzle insertion hole and the top of the interior duct to avoid condensation forming. The mounting template is designed to allow clearance if the top of the template is at or below the top surface of the interior duct.

• Do not mount directly to duct board. Remote mount nozzle attachment allowed only when using with a duct board adapter kit (part #32005530-001).

• Do not install in completely enclosed spaces, such as a cabinet or unventilated closet. Choose a location that is well ventilated.

69-2036EFS—07 

TrueSTEAM Humidification System

M24744

M24745

M24746

M24894

If installing the humidifier directly to the supply duct, follow steps on pages 5–6 and 13–18. If mounting remote from the duct, follow steps on pages 7–18.

duCT mounT InsTallaTIon

Choose a location that has access to a:

Draining water may be hot. Ensure drain outlet not exposed.

• Drain allowing a slope of 1/4 in. per foot of drain hose.

• Cold water line.

• Electrical circuit rated to your humidifier.

• Vertical surface with adequate clearances.

Continuous downslope

Required Minimum

Model

Circuit Capacity

HM506 7 Amps HM509 10 Amps HM512 12 Amps

CAUTION Hot water temperature above 120°F (49°C) can cause burns from scalding.

Install duct nozzle.

Ensure o-ring gasket is properly seated in the groove.

Insert nozzle and twist clockwise to ensure tight seal of nozzle to TrueSTEAM.

  69-2036EFS—07

Installation Guide

M24749

M24750

M24748

SUPPLY

12 INCHES

duCT mounT InsTallaTIon

Position template sticker on supply duct. For tall coils that do not have this

clearance available, refer to remote mounting instructions.

Secure bracket to duct using #8

5 6

self-drilling sheet metal screws (4).

Drill 1-3/4-in. hole.

A) Slide foam gasket over nozzle and

insert the nozzle into duct hole (pictured).

B) Push down to secure humidifier to

bracket arms. Ensure gasket forms tight seal in duct hole.

Allow 3 in. clearance from nozzle outlet to duct wall.

Proceed to page 13 for plumbing and wiring instructions.

69-2036EFS—07 6

Foam gasket

M24896A

RemoTe mounT InsTallaTIon

Use for mounting to a location other than the supply duct.

TrueSTEAM Humidification System

Most operation problems are caused by improper hose installation. Always ensure an uphill flow when installing the remote hose, and avoid kinks, sharp turns, or low spots that could restrict the flow of steam into the injection nozzle or condensation back into the humidifier.

If the remote hose cannot be installed with an upward pitch of 2 in./ft., a wetted drip tee must be installed. Failure to do so can result in back pressure on TrueSTEAM, which can lead to duct nozzle water spitting or leaking gasket. Remote hose must be supported to prevent sagging or low spots.

When remote mounting, also follow these critical steps in sizing the proper TrueSTEAM:

If the steam distribution tube is going into an unconditioned air space (e.g., attic), insulate the tube to ensure steam output efficiency:

• Honeywell recommends self-seal pipe insulation for hot and cold water pipes. Insul-Tube 1-1/8 in. ID x 1/2 in. wall 25/50 Factory Mutual 062411, flame retardant added.

The 6-gallon model (HM506) can be remotely mounted up to:

• 5 feet without insulating the steam distribution tube

• 15 feet if insulating the steam distribution tube

The 9- and 12-gallon models (HM509 and HM512) can be remotely mount up to 20 feet with or without insulating the steam distribution tube.

Ensure at least 2 in. per foot slope if installing the remote hose horizontally.

Choose a location for TrueSTEAM and the remote duct nozzle (see remote installs on pages 6–7).

It should have access for:

• Remote hose installation. Steam hose must be installed with 2 in./ft. pitch on a continuous uphill slope.

• Drain. Allow a continuous downslope to the drain.

• Cold water line.

• Electrical circuit rated to your humidifier (see circuit ratings on page 10).

Funnel or floor drain. Refer to governing codes for drain pipe size and maximum temperature requirements.

Maximum 3 ft.

2 in./ft. uphill

6 in.

8 in.

1/2 in. minimum diameter

Water in elbow

 7 69-2036EFS—07

Installation Guide

M24786

M24781

M24785

M24936

PRoPeR hose InsTalls

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

CAUTION

Hot water temperature above 120°F (49°C) can cause burns from scalding.

Living Area Remote Options

Garage Remote

Draining water may be hot. Ensure drain outlet not exposed.

69-2036EFS—07 

2 IN. PER FT

20 FT MAX

P - TRAP

DRAIN

WITH TRAP

5 FT MAX

3 FT MAXIMUM

DRAIN

P - TRAP

IF NO SLOPE

10 FT MAX

GENTLE BEND

OBSTRUCTION

SUPPORTED REMOTE HOSE

20 FT MAX

DRAIN

WETTED P - TRAP NOTE: HEIGHT OF TRAP MUST BE GREATER THAN THE DUCT STATIC PRESSURE

DRAIN

P - TRAP

IF NO SLOPE

TYPICAL INSTALLATION

WHEN TrueSTEAM IS ABOVE

REMOTE NOZZLE

KINKED

SAG

NO SLOPE

M24915A

UNDRAINED

ELBOW

TrueSTEAM Humidification System

PRoPeR hose InsTalls

NOTES:

• Slope hose up in direction of steam flow at 2 in. per foot;

• Maximum length of remote steam hose is 20 ft.

• Slope hose down in direction of steam flow at 3/4 in. per foot;

• Height of P-traps must be greater than the duct static pressure. (Typical 3 in. will suffice.) P-trap must also be wetted (see page 7).

• Minimize sharp bends and elbows.

• Insulating the remote hose in unconditioned spaces will sustain efficiency better than not insulating the hose.

AVOID THESE INSTALLATION MISTAKES.

 9 69-2036EFS—07

Installation Guide

M24744

M24745

M24764

M24765

M24894

RemoTe mounT InsTallaTIon

Model Minimum Circuit Capacity

HM506 7 Amps HM509 10 Amps HM512 12 Amps

Install hose adapter from Remote

Mount Kit.

Draining water may be hot. Ensure drain outlet not exposed.

Remote Mount Kit

(sold separately)

Ensure o-ring gasket is properly seated in the

Continuous

groove.

downflow

CAUTION Hot water temperature above 120°F (49°C) can cause burns from scalding.

Hose Adapter

Hose Clamps

Duct Nozzle

Remote Hose

• 50024917-001 = Ten Foot Hose Kit

• 50024917-002 = Twenty Foot Hose Kit

69-2036EFS—07 0

Insert hose adapter and twist clockwise to ensure tight seal of nozzle to TrueSTEAM.

M24766

M24767A

M24768

TrueSTEAM Humidification System

RemoTe mounT InsTallaTIonRemoTe mounT InsTallaTIon

Position template sticker on remote location. Note: TrueSTEAM will weigh 12–15 lbs. (+/- 2 lbs.) with

water, so if mounting onto drywall or plaster, position one side over a wall stud.

Insert wall anchors (4) into pilot holes and secure bracket to location.

Push down to secure TrueSTEAM to bracket arms.

  69-2036EFS—07

Installation Guide

M24770

M24771

RemoTe mounT InsTallaTIon

Cut a 1-3/4 in. diameter duct hole, install the provided gasket, and slide the remote nozzle up into the duct.

Secure remote nozzle to duct using #8 self-drilling sheet metal screws (4).

Run remote hose from the humidifier to the duct nozzle location. Up to 20 ft. of hose can be used.

Minimum 3 in. clearance required from nozzle outlet to duct wall.

If mounting remotely requires running hose through structural barriers (ie. wall or ceiling), cut at least a 1-3/4 in. hole and slide hose through.

Seal off unconditioned space with a grommet (not provided) or caulk.

Attach remote hose by sliding over the nozzle and adapter. Secure both hose ends with clamps (provided).

IMPORTANT:

Run hose continuously uphill. For horizontal runs, ensure a slope of 2 in. uphill per foot. Secure hose every horizontal foot using clamps (provided).

For long horizontal runs, support the hose by first securing a length of 2 x 4 lumber, U-channel, or angle iron with the appropriate slope. Then attach the hose to the top of this support. If remote hose requires downward pitch, refer to pages 5 and 7 for instruction.

69-2036EFS—07 2

M24852

M24772

M27428

TrueSTEAM Humidification System

PlumbIng

Insert 1/4-in. water line into filter. Apply modest pressure to ensure a tight fit.

Insert 1/4-in. water line into back-flow valve. Apply modest pressure for a tight fit.

Connect 1/2-in. drain tube. Secure drain tube to barbed fitting with hose clamp.

Shut off the water supply. Secure 1/4-in. copper or plastic water feed tube.

Description Part Number

In-Line Water Filter (included) (required for warranty) Back-flow valve (included) (required)

To water supply

50028044-001

50030142-001

1/4-in. copper or plastic

Enlarged view

Continuous downslope

1/2-in. drain tube

1/4-in. water line

Draining water may be hot. Ensure drain outlet not exposed. Ensure drain or condensate pump is rated for at least 120°F water.

CAUTION Hot water temperature above 120°F (49°C) can cause burns from scalding.

Water line tapping options. See instructions provided with the option you choose.

Manual shutoff valve (sold separately)

To humidifier

T-fitting

Piercing pin

Water supply line

Saddle valve (provided)

To humidifier

Check all water line connections to ensure no leaks once TrueSTEAM is operational.

 3 69-2036EFS—07

Installation Guide

M24754

M24895

24V 24V HUM HUM C GT R RT GF EXT

M24893

WIRIng

CAUTION: Voltage Hazard. Before wiring to HVAC terminals, disconnect HVAC equipment power. Ensure humidifier is not plugged in.

Loosen captive cover

screw. Slide cover out from front.

Low-Voltage Terminals

24V AC power for electronic humidistat. HUM Low-voltage humidistat (or thermostat) terminals control

C, R Connects to HVAC system transformer terminals (or relay

RT Connects to thermostat R terminal, which is normally

GT, GT connects to thermostat G terminal. GF connects to GF

EXT When a 24-vac fan board is not used to control blower

Tabs Notch

Route wires through the raised harness tabs and out the notch at the rear of the chassis. Ensure wires are secure and do not interfere with assembly of cover.

humidifier operation.

transformer fan control R and C) to ensure HVAC power is present before humidifying. This can be disabled by changing DIP switch 4 (see page 16).

switched to call for fan.

fan board G terminal. Thermostat G passes through the normally-closed (NC) relay contacts to GF, allowing fan activation. When TrueSTEAM is ready to provide humidity to the home, it will take control of the fan by forcing power from RT to GF (if not already activated).

(hydronic or cooling-only applications), this connection with GF provides dry-contact closure for fan calls. EXT/ GF may be wired to a low-voltage relay control center to provide line-voltage fan control.

69-2036EFS—07 

HVAC

RECOMMENDED

AIR FLOW SWITCH (AFS)

MECHANICAL

HUMIDISTAT

HVAC

POWER

MASTER

THERMOSTAT

HUM

GYWR Rc

GYWRC

TrueSTEAM - INTERNAL

24V

HUM

EXT

M24756

FAN

FURNACE BOARD

EQUIPMENT INTERFACE MODULE (EIM)

24V

HUM

EXT

CONV. HP

O/B

AUX

AUX2

H1 U M2

D1 H M2

V1 N T2

HEAT 1 RELAY

HEAT 2 RELAY

HEAT 3 RELAY

COOL 1 RELAY

COOL 2 RELAY

FAN RELAY

VISIONPRO IAQ

D-1

R-2

C-3

M24758

RECOMMENDED AIR FLOW SWITCH (AFS)

TrueSTEAM - INTERNAL

HVAC

TrueIAQ

THERMOSTAT

HUM

GYWR Rc

GYWR C

24V

HUM

EXT

RECOMMENDED

AIR FLOW

SWITCH (AFS)

M27409

HVAC

POWER

MASTER

TrueSTEAM - INTERNAL

TrueSTEAM Humidification System

WIRIng

Wire the TrueSTEAM according to the diagram that applies to your humidity control.

Follow this diagram if using a mechanical humidistat such as H8908ASPST or other.

Factory installed jumper

If AFS is used, ensure DIP 5 is in ON position.

Follow this diagram to wire TrueIAQ for manual operation.

Set TrueIAQ ISU parameter 10 to 1, and ISU 25 to 2. For auto-operation: also wire W and G to thermostat

W and G.

Factory installed jumper

Follow this diagram if using VisionPRO IAQTM for independent fan control. TrueSTEAM will independently activate furnace fan (humidity on demand).

Set VisionPRO IAQTM ISU

parameter 374 to 3.

If operating TrueSTEAM without

monitoring HVAC power or AFS, C wiring hookup is optional, but ensure DIP 4 is in ON position.

If AFS is used, ensure DIP 5 is in ON position.

  69-2036EFS—07

If AFS is used, ensure DIP 5 is in ON position.

Installation Guide

FAN

FURNACE BOARD

EQUIPMENT INTERFACE MODULE (EIM)

24V

HUM

EXT

CONV. HP

O/B

AUX

AUX2

H1 U M2

D1 H M2

V1 N T2

HEAT 1 RELAY

HEAT 2 RELAY

HEAT 3 RELAY

COOL 1 RELAY

COOL 2 RELAY

FAN RELAY

HVAC

POWER

MASTER

VISIONPRO IAQ

D-1

R-2

C-3

M24761

RECOMMENDED

AIR FLOW SWITCH

(AFS)

TrueSTEAM - INTERNAL

24V

HUM

EXT

HUMIDISTAT

HUM

HAC

MECHANICAL

HUMIDISTAT

HUM

HAC

RECOMMENDED

AIR FLOW SWITCH

(AFS)

TrueSTEAM - INTERNAL

HVAC

120 VAC

R8222

RED

BLACK

120 VAC

AT120

R C

M24760

HVAC POWER MASTER

WIRIng

Follow this diagram for a system with the VisionPRO IAQTM with operation dependent on HVAC power (humidification and fan call by thermostat).

Set VisionPRO IAQTM ISU

parameter 374 to 1. This allows the thermostat to call

for fan at the same time as it calls for humidification.

If AFS is not used, set DIP 4 ON and wire HUM terminals only.

If AFS is used, set DIP 5 ON and DIP 4 OFF and wire R, C, and Hum terminals.

Follow this diagram if using a blower fan dedicated to the TrueSTEAM (a fan separate from the HVAC equipment, as in hydronic or cooling-only applications).

69-2036EFS—07 6

If AFS is used, ensure DIP 5 is in ON position.

Remove Factory installed jumper (R/RT)

POWER

HUMIDIFYING

CLEAN TANK

CALL SERVICE

PRESS RESET

PRESS EMPTY

RESET

EMPTY

SEE LABEL BELOW

M24763

M24762

TrueSTEAM Humidification System

Slide the cover back into place and secure captive screw. Turn on the water supply and plug in the humidifier.

The Press Reset light will blink when

power is applied. Press/release the RESET button to

ready the TrueSTEAM. If not pushed, TrueSTEAM will automatically move to ready after five minutes.

WIRIngWIRIng

Turn the humidity control to the “Test” position. If the “Test” position is unavailable,

turn the control to a high setpoint (60% +). Be sure to turn this back down (or off) when testing is complete. “Off” will turn TrueSTEAM off.

Confirm that the furnace blower turns on to circulate air. This will take about 10–15

minutes upon call for humidity.

Important for Remote Installation:

After TrueSTEAM has produced steam for 10–15 minutes, check the integrity of the remote hose to ensure no sags have occurred. Add or adjust clamps if necessary to ensure 2 in. per foot continuous slope.

 7 69-2036EFS—07

Installation Guide

M24853

OFF

DIP 1

DIP 2

DIP 3

DIP 4

DIP 5

DIP 6

DIP 1

DIP 2

DIP 3

DIP 4

DIP 5

DIP 6

DIP 1

DIP 2

DIP 3

DIP 4

DIP 5

DIP 6

DIP

M28181

DIP 1

DIP 2

DIP 3

DIP 4

DIP 5

DIP 6

DIP 1

DIP 2

DIP 3

DIP 4

DIP 5

DIP 6

OFF

DIP 1

DIP 2

DIP 3

DIP 4

DIP 5

DIP 6

OFF

DIP

dIP sWITCh seleCTIon

Between the transformer and LED display on the circuit board are two sets of DIP switches. DIP 1 and 2 can be configured to adjust cleaning cycles. DIP 4 and 5 can simplify wiring. DIP 3 and 6 are not used at this time. Details below.

Run time (hrs) End-of-Season timer

(hrs)

10 hrs of humidifying before system auto-flushes debris

48 hrs before system autodrains and remains empty until next call for humidity.

from tank.

20 hrs of humidifying before system auto-flushes debris

48 hrs before system autodrains and remains empty until next call for humidity.

from tank.

30 hrs of humidifying before system auto-flushes debris

48 hrs before system autodrains and remains empty until next call for humidity.

from tank.

Clean tank indicator

1 year of total time (operational and inactive) before the Press Empty light will blink, indicating it is time to manually clean the water tank.

DIP 4 OFF, DIP 5 ON: If TrueSTEAM determines that no airflow* is present two minutes after the blower fan call, it will shut down steam output and activate a service light.

*Requires installation of air flow switch. See 'Wiring' section for details.

69-2036EFS—07 

DIP 4 ON, DIP 5 either setting: TrueSTEAM will allow humidity without HVAC power present and without airflow.

DIP 4 OFF, DIP 5 OFF: TrueSTEAM will not be allowed to humidify without HVAC power being present.

TrueSTEAM Humidification System

M24901

TRoubleshooTIng

TrueSTEAM has internal system diagnostics that monitor system operation, maintenance schedules, and faults. If a system fault is detected, the system will attempt to recover itself up to five times in a 24 hour period. If unable to recover in that time, the red Call Service LED light will activate.

If the TrueSTEAM Call Service light is red, a system fault has occurred from which the humidifier can not recover by itself. The table below shows the possible faults, along with steps to fix TrueSTEAM.

If the red Call Service LED light is on, press/release the RESET button. The red Call Service LED light will begin blinking in a series that indicates what fault occurred. Refer to the table below for the fault signified by the number of blinks that occur. To clear the fault, press and hold the RESET button for 5 seconds.

Press/hold the EMPTY button to clear the Service Timer light (i.e. the Press Empty button). Press/release the EMPTY button to drain the tank.

No. of Red Light Blinks

1 Water/Heater temper-

2 Water sensors failed. Yes, system will

3 Failure to fill tank

Fault Description Auto-

ature sensor failed.

with water.

Recoverable?

Yes, system will return to “Ready” if fault no longer exists in 1 hour.

return to “Ready” if fault no longer exists in 1 hour. Will attempt to reset itself 5 times in 24 hours.

Yes, system will return to “Ready” if fault no longer exists in 1 hour.

Steps to Fix To be Performed by Professional HVAC Technician Only

• Unplug TrueSTEAM and remove cover.

• Check water sensor connection to electronic board.

• Reattach cover and plug TrueSTEAM in.

• If fault reappears, follow the cleaning steps on pages 23–24.

• Reassemble tank and press the RESET button.

• If fault returns, replace with applicable wattage heating element.

• Unplug TrueSTEAM and remove cover.

• Disconnect water level sensor wiring, remove screen and lift snap-hinge clamp.

Remove water sensor assembly.

• Clean water sensor probes using warm soapy water so that the metal is exposed.

• Reassemble the sensor assembly in the unit, reattach and secure cover.

• Plug unit back in and press the RESET button.

• If fault reappears, replace sensor assembly.

• Ensure inlet water is on.

• Check for leaks around the tank seal and solenoid.

• Turn off water supply and replace in-line water filter.

• Press/hold RESET button until the red Call Service light turns off.

• If tank still fails to fill, press the EMPTY button (if unit fails to drain, unplug unit and make sure water in tank is cool).

• Follow tank cleaning instructions on page 21. Ensure you have a firm grip of the tank prior to releasing the tank, especially if water is present.

• Clear any excess debris from the tank’s bottom orifice to the solenoid.

• Reassemble tank and plug unit back in. Press the RESET button.

• If water still fails to flush into the tank, replace the solenoid valve.

 9 69-2036EFS—07

Installation Guide

TRoubleshooTIng

No. of Red Light Blinks

4 Heating element

5 Input voltage insuf-

6 Water overflow

7 HVAC power not

Fault Description Auto-

overheated.

ficient.

sensed.

present (monitor this fault only when DIP 4 and 5 are OFF).

Steps to Fix

Recoverable?

No • Follow tank cleaning steps (pages 23–26).

Yes, system will return to “Ready” if fault no longer exists in 1 hour.

To be Performed by Professional HVAC Technician Only

• Reassemble tank and press the RESET button.

• If fault returns, replace with applicable TrueSTEAM.

• Unplug and replug the unit in to see if the fault returns.

• If fault returns, unplug unit and remove cover.

• Ensure wiring connections are secure and attached.

• If fault returns, replace the TrueSTEAM with a new one (field service is not recommended in the event line voltage is lost).

• Ensure drain hose is not kinked or submerged in water at the drain. Check functionality of condensate pump if used.

• Check for water coming out of drain/overflow line. If continuous water flow is present, follow the cleaning steps on pages 23–26.

• Press EMPTY button to drain tank.

• Set humidistat RH setpoint to Test mode.

• If fault returns, unplug TrueSTEAM.

• Loosen cover screw and remove cover.

• Disconnect water level sensor wiring and lift snap-hinge clamp to remove water sensor assembly. See image on page 17.

• Clean probes using warm soapy water so that the metal is exposed.

• Reassemble the sensor assembly in the unit, reattach and secure cover.

• Plug unit in, and press RESET button.

• If fault reappears, replace water sensor assembly and/or solenoid valve.

• Unplug and replug the unit in to see if power returns.

• If not, ensure HVAC equipment has power. Check circuit breaker and replace fuse if circuit is tripped.

• Unplug TrueSTEAM and remove cover.

• Ensure DIP 4 is ON and reattach cover.

• Plug unit in.

• If fault reappears, ensure the circuit being used has the rating to support the unit. Unplug any additional equipment plugged into this circuit. If fault disappears, the circuit capacity is not properly sized to your unit.

• If fault returns, replace unit.

69-2036EFS—07 20

TrueSTEAM Humidification System

TRoubleshooTIng

No. of Red Light Blinks

8–11 The backup weld

12 Temperature of the

13 Tank failed to drain. No • Water in tank may be hot (>140ºF [60ºC]).

14 Heater failed to boil

15 No Airflow. Yes • Ensure Differential Pressure Switch is installed and wired

Fault Description Auto-

Recoverable?

No • Replace the unit. monitor input is active when the backup heater relay is off.

Yes, system will electronic circuit board is too high.

water.

return to “Ready”

if fault no longer

exists in 1 hour.

Yes, system will

return to “Ready”

if fault no longer

exists in 1 hour.

Steps to Fix To be Performed by Professional HVAC Technician Only

• Ensure ventilation holes in the cover are clear of obstruction, and that 1 foot of clearance is maintained around the cover’s vent holes.

• Ensure the TrueSTEAM is installed in a location with conditioned air 32°F (0°C) to 104°F (40°C).

• Turn humidistat off and allow time for electronic board to cool.

• Turn humidistat on and press RESET button.

• Confirm humidity call starts by HUMIDIFYING light turning on.

• Allow unit to run and check for steam leaks around tank and ventilation holes.

• If steam is present, replace TrueSTEAM.

• Press the EMPTY button.

• If unit fails to drain, wait for water in tank to cool. Ensure tank water is cool before proceeding.

• Once cool, follow tank cleaning steps (pages 23–24).

• Reassemble tank and press the RESET button.

• If fault persists, replace the solenoid valve.

• Follow tank cleaning steps (pages 23–24).

• Reassemble tank and press the RESET button.

• If fault returns, replace the heating element with the applicable wattage replacement part.

correctly. See the Wiring section for proper wiring.

• Ensure DIP switches are set correctly.

• If fault persists, replace AFS and/or unit.

 2 69-2036EFS—07

Installation Guide

sPeCIfICaTIons

Capacity: HM512: 12 gallons per day (gpd) (45 liters per day [lpd])

HM509: 9 gpd (34 lpd) HM506: 6 gpd (23 lpd)

Humidified Area:

House Description

Loose Two 2000 ft21300 ft21000 ft Average One 2500 ft21800 ft21500 ft Tight One-half 3000+ ft22500 ft22000 ft

Air Changes Per Hour

HM512 HM509 HM506

Weight:

Model Empty Filled with Water

HM512 9 lbs. 15 lbs. HM509 9 lbs. 14.5 lbs. HM506 8 lbs. 12 lbs.

• Dimensions: 11-1/4 in. W x 19 in. H x 9 in. D

• Humidifier Operating Temperature Range: 34ºF– 120ºF (1.1ºC–49ºC)

• Remote Hose/Nozzle Operating Temperature Range:

-50ºF–250ºF (-46ºC–121ºC)

• Operating Humidity Range: 0–95% RH, noncondensing

Drain Operation

• Auto flushing is configurable to 10, 20 or 30 hours of operational time (heating element active).

• During auto flushing, cold water will enter the tank to lower water temperature below 140ºF (60ºC) before draining.

• During manual flush (performed by pressing the EMPTY button) initial water temperature may be above 140ºF (60ºC). Ensure drain outlet is not exposed and use caution when pressing the EMPTY button, and do NOT attempt to remove the tank with water in it.

• Flush cycle takes approximately 15 minutes to empty the tank completely. To override, press/hold the EMPTY button while the “Clean Tank” light is blinking.

• Drain Hose Operating Temperature Range: 34ºF– 212ºF (1.1ºC–100ºC)

Electrical Ratings and Tolerances Input Ratings

• Power Supply: 120VAC +10/ -15%, 60Hz

- HM512: 1440W at 120VAC at full load

- HM509: 1200W at 120VAC at full load

- HM506: 840W at 120VAC at full load

• HM512: 12A, 120VAC

• HM509: 10A, 120VAC

• HM506: 7A, 120VAC

• 15A, 120VAC interlock switch

• Thermostat/HVAC power monitor (R to C): 10mA resistive at 24VAC

• Field wiring terminals: 18–22 ga. solid

• HVAC power/airflow monitor: 10 mA resistive at 24 VAC

Output Ratings

• Relay output contacts:

- Fan: 1.5A full load, 7.5A locked rotor at 24VAC

- Heat and Backup: 15A resistive at 120VAC

• Fill Solenoid: 0.1A at 120VAC, 0.5 PF

• Drain Solenoid: 0.1A at 120VAC, 0.5PF

• Humidistat output contacts: 10mA resistive at 24VAC

• Humidistat power supply: 100mA at 24VAC

CAUTION Hot water temperature above 140°F (60°C) can cause burns from scalding.

Standards & Approval Body Requirements

Underwriters Laboratories: UL998, File no. E185662. Federal Communications Commission: Class B compliance, File no. YU555.

Intended to be used in accordance with the National Electrical Code (NEC), ANSI/NFPA 70, and the rules of the Canadian Electrical Code (CEC), Part 1, C22.1.

69-2036EFS—07 22

TrueSTEAM Humidification System

EMPTY

M24774

CLEAN TANK

(BLINKING LIGHT)

M24775

M24776

CLEAN TANK

(ON SOLID)

CleanIng and seasonal oR VaCaTIon maInTenanCe

Maintenance is simple with TrueSTEAM—just remove the water tank for cleaning.

Warning: Scalding hazard. Do not attempt to remove the humidifier from the mounting bracket during operation, or when the humidifier’s water tank when full of water. Water heater could be hot when tank is removed. Failure to comply could result in severe scalding or death.

Drain Operation

• Auto flushing is configurable to 10, 20 or 30 hours of operational time (heating element active).

• During auto flushing, cold water will enter the tank to lower water temperature below 140°F (60°C) before draining.

• During manual flush (performed by pressing the EMPTY button) initial water temperature may be above 140°F (60°C). Ensure drain outlet is not exposed and use caution when pressing the EMPTY button, and do NOT attempt to remove the tank with water in it.

To clean the TrueSTEAM:

1. Press and hold the EMPTY button for 3 seconds. Wait for the CLEAN TANK light to be on solid (not blinking). The flush cycle takes approximately 15 minutes to empty the tank

completely. To override the flush cycle press/hold the EMPTY button a second time for 3 seconds. The tank will drain immediately.

Wait

Go to Step 2

 23 69-2036EFS—07

Installation Guide

M24777

M24778

M24779

M24856

M24857

CleanIng and seasonal oR VaCaTIon maInTenanCe

2. Turn the manual shut-off valve at the bottom of the tank to the “Unlock” position.

4. Firmly grip the tank bottom. Push down the cover's safety button and pull the latch forward to release the tank.

Note: Latch does not come off humidifier with tank.

3. Grip the white water valve arm and slide it back within the bracket to disengage from the tank.

5. 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 warm, soapy water, then rinse clean. Tank is also dishwasher-safe.

6. Carefully rub minerals off of the heating element, reservoir walls, and sensors. Scouring pads suitable for non-stick pots or pans are suitable for cleaning the TrueSTEAM reservoir walls and components within the tank.

Sediment screen

69-2036EFS—07 2

TrueSTEAM Humidification System

M27410

M27411

7. Replace inline filter once per year. Turn water supply off before replacing.

Press down filter collar ring and pull out 1/4 in. water line from each side.

Insert 1/4 in. lines into new filter. Apply modest pressure to ensure a tight fit.

Once clean, reattach tank by securing the latch. Engage the water valve to the cam shaft, and “Lock” the shut-off valve. The “Press Reset” light will blink at start-up. Push the RESET button to ready the humidifier.

 2 69-2036EFS—07

Installation Guide

CleanIng and seasonal oR VaCaTIon maInTenanCe

Automatic End of Season Shutdown

Your TrueSTEAM humidifier has the built-in intelligence to shut down when humidity is not needed for an extended period. After 48 hours of inactivity, TrueSTEAM will drain and remain empty until humidity is needed again. This prevents water from stagnating within the tank. The tank will refill with water upon next humidity call.

There are a few house-cleaning steps to follow to keep your TrueSTEAM operating at peak efficiency:

1. Follow steps 1–6 in the Cleaning section on page 23 at least once per year, or when the “Press Empty” light is blinking.

2. Clear ventilation holes in the humidifier’s cover.

3. Clear the water drain tube.

4. Make sure the water tank gasket seal is not cracked or split before reattaching the humidifier water tank.

5. Check that the humidifier is still mounted level.

Extended Vacation

When you leave on extended vacations, it is recommended you turn off the humidifier’s water supply and turn off the humidity control. When you return, turn on the humidifier water supply and reset your humidity control to a comfortable position.

69-2036EFS—07 26

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