Honeywell HCM-631N - Quietcare 3 Gallon User manual

TM
69-2285-01
TrueSTEAM™
PROFESSIONAL INSTALLATION GUIDE
INCLUDED IN THIS HUMIDIFIER BOX
Remote installation requires separate purchase of the
Honeywell Remote Mounting Kit (#50024917)
Tools needed to install TrueSTEAM
Wire cutter/stripper
1-3/4-in. diameter hole saw
1/8-in. drill bit
Standard screwdriver
18-gauge wire (up to 5 conductor)
Torx driver T-20 and T-30
Other Requirements
TrueSTEAM flushes water at or above 140°F (60°C).
Refer to local codes for proper draining practices
for hot water.
Condensate pump rating of 212°F (100°C) if used.
Drip pan with water sensor shut-off required underneath
TrueSTEAM if installed in or above finished space.
TrueSTEAM
Mounting bracket and hardware
Backflow preventer
Saddle valve
EWater supply hose
FDrain hose (10 feet)
GDuct nozzle and gasket
HOwner’s manual
IService label
J3Humidity control*
J4VisionPRO IAQ control*
*Control based on model ordered.
E
H
FI
J3J4
G
GETTING
STARTED MOUNTING PLUMBING WIRING APPENDICES
OPERATION
AND SERVICE

TrueSTEAMTM
?
TrueSTEAM Humidification System 69-2285—01
GETTING
STARTED MOUNTING PLUMBING WIRING APPENDICES
OPERATION
AND SERVICE
1
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. Copyright © 2009 Honeywell International Inc. All rights reserved.
Critical Installation Information ................................2
Water Quality and Hardness ...............................................2
Testing Water Quality and Interperting Results....................2
Choosing the Filter...............................................................2
Set the Automatic Flush Cycle Timing .................................3
Proper Sizing of a TrueSTEAM Humidier ..........................5
TrueSTEAM Pre-Install Information .....................................6
Safety Denitions and Precautions..........................7
Safety Denitions.................................................................7
Safety Precautions...............................................................7
Setting Homeowner Expectations ............................8
Important Installation Requirements........................9
Personal Safety ..................................................................9
Mounting Location ..............................................................9
Duct Nozzle ........................................................................9
Water Drainage ...................................................................9
Choosing a Mounting Method.................................10
Which is right for you? .......................................................10
Duct Mounting .......................................................... 11
STEP ONE: Select a Mounting Location ........................... 11
STEP TWO: Connect the Duct Nozzle .............................. 11
STEP THREE: Install Mounting Bracket to the Duct..........12
STEP FOUR: Install TrueSTEAM onto the
Mounting Bracket...............................................................12
Water Supply and Drain Connections ....................13
STEP ONE: Connect the Cold Water Supply ....................13
STEP TWO: Tap into a Water Line ....................................13
STEP THREE: Connect TrueSTEAM to the
Cold Water Pipe.................................................................14
STEP FOUR: Connect to the Water Drain.........................14
Other Plumbing Options..........................................15
For All Options Shown: ......................................................15
Connect to TrueSTEAM.....................................................15
Remote Installation ..................................................18
Proper Hose Installation..........................................20
Reverse Osmosis Filter ...........................................23
Parts of the RO Filter .........................................................23
Setting up the RO Filter ....................................................24
Maintaining the RO Filter ..................................................25
Before Wiring TrueSTEAM.......................................26
Using the DIP Switches .....................................................26
STEP ONE: Remove the TrueSTEAM Cover ....................26
STEP TWO: Understand the DIP Switches .......................26
Deciding on the Wiring Conguration....................28
STEP ONE: Make Power Monitoring Decision ..................28
STEP TWO: Make System Fan Regulation Decision ........30
STEP THREE: Make Add-On Air Proving Decision ...........32
Using the Terminals ...........................................................33
Routing the Wires ..............................................................33
Using the Correct Control Diagram........................34
Startup and Checkout..............................................45
Routine Maintenance ...............................................46
Automatic Cleaning Cycle..................................................46
STEP ONE: Initiate a Flush Cycle .....................................46
STEP TWO: Remove the Water Tank................................48
STEP THREE: Clean the Tank ..........................................49
STEP FOUR: Replace the Water Level Sensor.................49
Changing the Water Filter ..................................................50
Water Level Sensor Troubleshooting Steps ..........51
Test Setup..........................................................................51
Test Pins ............................................................................51
Testing for Shorts...............................................................51
Good Water Sensor ...........................................................51
Bad Water Sensor..............................................................51
STEP FIVE: Reinstall the Tank .........................................52
Troubleshooting .......................................................53
A: Specications ......................................................58
B: Parts List ..............................................................59

GETTING
STARTED
Water Quality and Hardness
Proper filtration is critical for the operation of the TrueSTEAM humidifier. Failure to address water quality can
potentially lead to drastically increased maintenance requirements and premature 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.
It is imperative to fully understand the quality and hardness of the water that will be used on each individual
TrueSTEAM humidifier. Water quality and water hardness can vary greatly from home to home, and even between
two homes on the same street. Water test kits are included with every TrueSTEAM model and are also available
for purchase separately (50044721-001). Proper use of these kits will help determine which filtration option is right
for each particular installation.
Testing Water Quality and Interperting Results
The color block will recommend the best water filtration method for the home.
Fill the plastic tube with water directly from the
TrueSTEAM input water source.
Note: It is important to test the specific input to TrueSTEAM,
as it may differ from the faucet taps in the home.
Dip the colored end of one of the test strips into
the tube’s water for 3 seconds.
Remove the test strip. Do not shake the strip.
Wait 20 seconds and then match the test strip’s
color to the closest color block on the water
hardness scale.
Note: Strip color results are no longer valid after one minute.
MCR32902
1
2
4
3
RANGE 1
RANGE 2
RANGE 3
Water
Softener
RO Filter Part No.
50045947
Honeywell
Recommends
Polyphosphate
Filter Part No.
50028044
Choosing the Filter
If the water tests in range 3 then the TrueSTEAM humidifier will require the use of a while house water softener
for optimal performance. Failure to use softened water in this situation can potentially lead to drastically increased
maintenance requirements and premature failure of the TrueSTEAM and its components. Water hardness in
this range negatively affects all facets of a home including shower heads, faucets, laundry machines (as well as
TrueSTEAM).
In applications with softened water, use of the in-line polyphosphate filter is recommended.
Critical Installation Information
TrueSTEAM Humidification System 69-2285—01
2

GETTING
STARTED
Set the Automatic Flush Cycle Timing
• Use DIP 1 and DIP 2 to configure how often
TrueSTEAM will automatically flush the tank.
Timing for the automatic flush is based on hours of
active heating element time.
• The home’s water hardness determines how often
automatic flushing should be performed.
• The automatic flush timing can be changed any
time after installation by setting the DIP 1 and
DIP 2 positions, as shown at left. See “Automatic
Cleaning Cycle” on page 46 for a description of the
automatic flushing process.
65432
On
Off
1
654321
654321
654321
On
Off
On
Of
f
For water that is filtered through
the Honeywell RO Filter System.
(30 hour flush)
For hard water without
a softener or filter.
(8 hour flush)
For water that is put through
a softener before
entering TrueSTEAM.
(20 hour flush)
For soft water without
a softener or filter.
(12 hour flush)
On
Off
M29614
If water hardness is in range 1:
Honeywell recommends using the
polyphosphate filter (sold separately).
Proceed to “Water Supply and Drain
Connections” on page 13.
M29602
If water hardness is in range 2:
Honeywell recommends using the RO Filtration
system (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. See “Appendix F:
Reverse Osmosis Filter” on page 23 to install
the filter.
M29661
TrueSTEAM Humidification System 69-2285—01 3

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. Use of a whole house water softener will help protect the humidifier from excessive maintenance
requirements as well as undue wear and tear in homes with hard water.
In applications with a water softener, it is critical for the TrueSTEAM to draw its water supply from the cold water
line after the water softener.
Note: Be sure to check all local plumbing codes before beginning installation.
M32903
Furnace
Water
Heater
Cold softened water
When using softened
water, use of the in-line
polyphosphate filter is
recommended
Water
Softener
Hard water source
TrueSTEAM draws water
from cold water line after
whole house water softener
BEST
PRACTICE
Use TrueSTEAM with water that is less than 1 grain per
gallon hardness. A properly functioning water softener will
accomplish this.
TrueSTEAM Humidification System 69-2285—01
4

GETTING
STARTED
Proper Sizing of a TrueSTEAM Humidifier
The Air-Conditioning, Heating and Refrigeration Institute (AHRI) has set guidelines for determining humidification
capacity requirements. The recommendation is based on the square footage 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.
• Geographic Area
• Elevation
• Ventilation type
• Number of people living in the home
• Ceiling height (i.e. cubic volume)
• Window type (i.e. structure type)
• Insulation type (i.e. structure type)
• Equipment type
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.
AHRI defines structure type as follows:
• Tight construction: Well insulated with vapor retarders, tight storm doors, windows with weather stripping,
dampered fireplace, and using ½ air change per hour of air infiltration.
• Average construction: Insulated with vapor retarders, loose storm doors and windows, dampered fireplace
with 1 air change per hour of air filtration.
• Loose construction: Generally built before 1930 with little or no insulation, no storm doors, no insulated
windows, no weather stripping, no vapor retarders, undampered fireplace, and with 1-1/2 air changes per hour
of air infiltration.
It is vital to take all of these factors into account when sizing a TrueSTEAM humidifier for a particular home.
Undersizing the humidifier will not only reduce the potential to meet the a desired humidity set point, it may also
lead to extensive system fan run time or higher operating costs as the system tries to deliver to the control’s
setting. While oversizing the humidifier may lead to higher amp draw, the system run time will be less, which in
some situations may be less expensive at the bottom line.
TrueSTEAM Humidification System 69-2285—01 5

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.
Honeywell recommends completing the below questionnaire and leaving a copy
behind at the home along with the TrueSTEAM installation guide with every TrueSTEAM
installation.
Honeywell TrueSTEAM techline: 800-814-9452
TrueSTEAM Pre-Install Information
Model Number of TrueSTEAM Unit
Date Code (xxxx)
Water Quality Test 1 2 3 (circle one)
Water Pressure Test (psi)
Flush Cycle Setting DIP 1 OFF ON OFF ON (cicrle one)
DIP 2 OFF ON ON OFF (cicrle one)
Duct Static Pressure Test (in.wc.)
(Maximum static pressure is 0.5 in.wc.)
Condensate Pump or Drain Pump Drain (circle one)
If Drain - PVC or Standard PVC Standard N/A (circle one)
Supply Voltage to Unit (V)
Monitoring Air Flow/System Power/
None
DIP 4 ON OFF (cicrle one)
DIP 5 ON OFF (circle one)
Control - Wireless or Wired Wireless Wired (cicrle one)
Fan Control - TrueSTEAM or Controller TrueSTEAM Controller (circle one)
Other (any additional relevant
information)
BEST
PRACTICE Complete this information sheet and leave on all jobsites
TrueSTEAM Humidification System 69-2285—01
6

GETTING
STARTED
Safety Definitions and Precautions
Safety Definitions
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.
Safety Precautions
CAUTION: Voltage Hazard.
Can cause electrical shock or equipment damage.
Disconnect HVAC equipment before beginning installation.
WARNING: Electrocution, Heavy Equipment, and Water Hazard.
Can cause death, blindness, and water damage to home, and heating element failure.
CAUTION: Steam Condensation, Fire, and Freezing Water Hazard.
Can cause failure of fan or limit control or result in water damage to home.
Make sure you read and understand the following safety hazards before installing, using, or working
with the TrueSTEAM humidifier:
• Do not direct the steam nozzle at people.
• Water inside tank can be very hot. Explain this to homeowner and emphasize the warning label
on TrueSTEAM.
• Scalding danger from draining water. When the water tank drains, the water can be hot enough to cause
injury. Make sure the homeowner understands the danger of hot water and steam.
TrueSTEAM Humidification System 69-2285—01 7

GETTING
STARTED
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. If the remote hose is
used, there may be a slight rubber odor. These odors will go away within a few days.
• Ideal Humidity. 35% relative humidity in typical winter weather is considered ideal by industry experts.
Homeowners can adjust to their own comfort or until there is condensation on the windows. Lower the setpoint
if condensation appears.
• Unit Not Humidifying. If TrueSTEAM is not running but the humidity is below the setpoint, the humidity control
may have a frost protection setting. TrueSTEAM will not humidify while in a drain cycle mode.
• Setpoint Not Reached. If humidity doesn’t reach the setpoint, TrueSTEAM may be undersized for the home.
This can be due to factors such as insulation, windows, and arid climate. Also, the outdoor temperature may
be too low to maintain the humidity level. Wait for the outdoor temperature to warm closer to 20°F (-6°C). If the
desired humidity is still not reached, then a larger capacity TrueSTEAM may be needed.
• Home Ventilation. Excessive ventilation sends moist air outside and replaces it with dry air. This can make it
hard to maintain the humidity setpoint. If installing a ventilator, use a solution that retains moisture. An Energy
Recovery Ventilator (ERV) is recommended.
• Cleaning Required Light. If the Cleaning Required light is on, clean TrueSTEAM using the steps found in
the “Routine Maintenance” section on page 46, or in the Homeowner’s Operating Manual. TrueSTEAM will
continue to run normally while this light is on.
• Hard Water. The home’s water hardness determines how often TrueSTEAM must be cleaned. A water
hardness test kit is provided with your TrueSTEAM. It will help you determine the cleaning interval and filter
requirements for your TrueSTEAM.
• Energy Consumption. There may be a slight increase in overall energy consumption when operating
any humidifier. However, TrueSTEAM will make the home feel warmer. This allows the homeowner to lower
the temperature setting on the thermostat. Every degree lower on the thermostat can save up to 3% on
heating costs.Personal Safety
Setting Homeowner Expectations
TrueSTEAM Humidification System 69-2285—01
8

GETTING
STARTED
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.
• Install TrueSTEAM on the supply duct. Use the Remote Mounting Kit if duct mounting is not possible.
• Do not install TrueSTEAM where the ambient temperature is lower than 34°F (1.1°C) or higher
than 104°F (40°C).
• Mounting area must be strong enough to support TrueSTEAM’s weight when full of water (up to 15 lbs.).
• Choose a location that is well ventilated. Do not install TrueSTEAM in completely enclosed spaces, such as a
cabinet or unventilated closet.
• Allow at least 1 foot clearance to ventilation holes in the TrueSTEAM cover. Do not cover the holes. Covering
them can increase the temperature inside TrueSTEAM and shorten its life.
• Do not mount directly to duct board. The remote mount nozzle attachment is allowed only with a Honeywell
duct board adapter kit. See “Appendix B: Parts List” on page 59.
• If used near a pool or spa, make sure TrueSTEAM can not fall into the water or be splashed. Also, ensure
TrueSTEAM is plugged into a ground fault interrupted (GFI) outlet.
Duct Nozzle
• Do not install the duct nozzle into a supply duct with static pressure exceeding 0.5 in. w.c.
• Do not install the duct nozzle through wooden sidewalls (e.g., floor joist).
• If the duct has exposed insulation on the interior, be sure the nozzle extends beyond the insulation. Clear away
excess insulation at the insertion point, or replace a section of insulated duct (approximately 6 in. x
6 in.) with rigid, non-insulated sheet metal.
• Allow at least 4 in. clearance between nozzle outlet and any interior duct to avoid water condensation.
• Mount TrueSTEAM where the nozzle outlet has a minimum 24 in. of downstream open air space.
Water Drainage
• Consult local plumbing codes for drain size, material, and maximum temperature allowed.
Important Installation Requirements
Failure to comply with these requirements will result in voided warranty, improper installation, and
service callbacks.
TrueSTEAM Humidification System 69-2285—01 9

MOUNTING
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?
This manual covers duct mounting of TrueSTEAM. For Remote Mounting Instructions, see “Remote Installation”
on page 18 or “Document 69-2317” (included with Remote Mounting Kit).
TrueSTEAM Humidification System 69-2285—01
10
DUCT MOUNTING – if you can mount
TrueSTEAM onto the supply duct of
the HVAC system:
The generated steam goes directly into the
supply duct.
This is the simplest type of installation, but
it requires that a suitable mounting location
can be found on the supply duct.
Return Supply
M29596
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
steam from TrueSTEAM to the supply duct.
You will need to use a remote mounting kit
(see “Appendix B: Parts List” on page 59).
Supply
M29597
Before proceeding:
I have decided to use: Duct Mounting Remote Mounting

MOUNTING
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.
STEP ONE: Select a Mounting Location
Choose a location that has access to a cold
water supply pipe.
Select a vertical or horizontal surface on the HVAC
supply duct, with adequate clearances, where
TrueSTEAM can be mounted.
Make sure there is a 120 VAC electrical outlet
rated for the TrueSTEAM model being installed.
Ensure the location is near a drain with a high-
temperature water rating. Consult local plumbing
codes for proper drainage. If no main floor drain
is available, see “Other Plumbing Options” on page 15.
STEP TWO: Connect the Duct Nozzle
Slide the foam gasket over the nozzle.
Make sure the o-ring gasket is properly seated
in the groove.
Insert the duct nozzle into TrueSTEAM. Twist clockwise
to ensure a tight seal.
M29598
M29599
TrueSTEAM Humidification System 69-2285—01 11
TrueSTEAM Required Minimum
Model: Circuit Capacity:
HM506 7 Amps
HM509 10 Amps
HM512 12 Amps
1
4
2
3
3
2
1

MOUNTING
Before proceeding to Plumbing:
I selected a duct mounting location
I connected the duct nozzle
I installed the mounting bracket to the duct
I installed the TrueSTEAM onto the mounting bracket
TrueSTEAM Humidification System 69-2285—01
12
STEP THREE: Install Mounting Bracket to the Duct
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.
Secure the mounting bracket to the duct, using four
self-drilling sheet metal screws provided.
STEP FOUR: Install TrueSTEAM onto the Mounting Bracket
Make sure the foam gasket is positioned correctly over
the nozzle.
Lift TrueSTEAM into place against the mounting
bracket. Insert the nozzle directly into the duct hole.
Check the foam gasket – it must form a tight seal in
the duct hole.
Push down to secure TrueSTEAM to the bracket arms.
Flow
4”
12”
(min)
4”4”
M29600
M29601
2
3
1
3
2
1
4

PLUMBING
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.
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.
Use clamps or ties to secure the water filter in a
location that allows for removing and replacing it in the
future. Honeywell recommends changing the water
filter or RO canisters 1 & 2 annually, or as needed
based on water conditions.
Install the provided backflow preventer, as required
by code. See “Appendix F: Reverse Osmosis Filter” if
using the Reverse Osmosis Filter.
Cut the water line so it is long enough to reach from
the water filter to the supply fitting on the bottom
of the TrueSTEAM.
Insert the water line into the TrueSTEAM
supply fitting.
Note: Failure to check for a tight fit with plastic water line
could result in the line coming loose in the future. Apply
modest pull to ensure water line is properly seated and
secure.
STEP TWO: Tap into a Water Line
• Consult local codes for proper plumbing.
• Use the saddle valve provided or a T-fitting and
manual shutoff valve to tap into a cold water line.
• Refer to the literature included with the valve you
chose and the local plumbing codes. Use proper
technique for the valve.
Saddle Valve
T-fitting
Water Supply
Line
Manual Shutoff
Valve
M29605
Water Supply and Drain Connections
MCR32911
BEST
PRACTICE Use a manual shutoff valve when tapping into a water line.
TrueSTEAM Humidification System 69-2285—01 13
43
2
1
5

PLUMBING
STEP THREE: Connect TrueSTEAM to the Cold Water Pipe
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.
Connect the other end of this line to the saddle valve
or T-fitting and manual shutoff valve.
STEP FOUR: Connect to the Water Drain
• Consult and follow local plumbing codes for drain
pipe size and maximum temperature requirement.
• The ideal installation is directly to the main floor
drain using the rubber hose provided.
• If direct floor drain access is not available, see
“Other Plumbing Options” on page 15.
Connect the 1/2-inch drain hose provided to the drain
fitting on the bottom of the TrueSTEAM.
Use the hose clamp provided to secure the drain hose
to the barbed fitting.
Route the drain hose to the floor drain. The hose must
have a continuous downward slope.
Direct the hose outlet into the floor drain. Secure
the hose to reduce the risk of hot water pooling
or splashing.
MCR32901
M29607
Before proceeding to Wiring:
I have confirmed minimum required circuit capacity
I have connected the water supply using cold water
I have installed the drain connection
CAUTION: Scalding Hazard.
During operation, hot water may exit drain and can cause burns from scalding.
Make sure the hose is securely connected to the drain.
TrueSTEAM Humidification System 69-2285—01
14
2
1
3
2
1
4

PLUMBING
Other Plumbing Options
TrueSTEAM Humidification System 69-2285—01 15
3/4 IN. COPPER PIPE
3/4 IN. FNPT X SWEAT
HOSE
CLAMPS
HOSE FROM
TrueSTEAM
212°F RATED PUMP
1/2 IN. BARB X 3/4 IN. MNPT
FLEXIBLE
HOSE
M28678
SEAL ALL CONNECTIONS FROM
SOLENOID VALVE TO DRAIN STACK
3/4 IN. FNPT X
1-1/2 IN. PVC
1-1/2 IN. (MINIMUM) PVC PIPE
3/4 IN. FNPT X 3/4 IN. CPVC
3/4 IN. CPVC PIPE
3/8-IN. TUBING
RATED AT 212°F
Connect to TrueSTEAM
Common to all plumbing options.
Option 1: Plumbing
to drain with
condensate pump. • UseHartellA3X-115condensatepumporequivalent
(212°F temperature rating, > 1 GPM pump flow rate).
• PumpmustbepoweredwhenTrueSTEAMisoperating.
• Useapumpwithabuilt-inoverflowsensororinstallthepump
in a drip pan with wet switch wired to turn off TrueSTEAM.
HOSE CLAMPS AT
ALL CONNECTIONS
3/8-IN. TUBING
RATED AT 212°F
M28713
3/4 IN. FNPT X 3/4 IN. CPVC
3/4 IN. CPVC PIPE
TO PUMP
ALTERNATIVE
HOSE FROM
TrueSTEAM
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.
• Support rubber hose every 6 in.
• PVC must be schedule 40 or higher rating.
• All plastic pipe joints are welded.
• Drain into a P-trap that will remain wetted at all
times.
For All Options Shown:

PLUMBING
TrueSTEAM Humidification System 69-2285—01
16
1-1/2 IN. MINIMUM TRAP
(OR SIZE PER LOCAL CODE)
VENTED PER
LOCAL CODE
ALL PLASTIC PIPE
JOINTS ARE WELDED
M28679
3/4 IN. MNPT X SWEAT
3/4 IN. FNPT X 1-1/2 IN. PVC
1-1/2 IN. PVC
1-1/2 IN. (MINIMUM) PVC PIPE
3/4 IN. FNPT X 1-1/2 IN. PVC
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
SIZE TO FIT PUMP OUTPUT
Option 2: Plumbing to a dedicated trap.
3/4 IN. MNPT X SWEAT
3/4 IN. FNPT X 1-1/2 IN. PVC
1-1/2 IN. PVC
1-1/2 IN. (MINIMUM)
PVC PIPE
3/4 IN. FNPT X 1-1/2 IN. PVC
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
M28681
ALL PLASTIC PIPE UNDER
SINK 1-1/2 IN. MINIMUM PVC
ALL CONNECTIONS FROM
SOLENOID VALVE TO
DRAIN TRAP ARE SEALED
SINK
COUPLING
WELD
WELD
THREADS
THREADS
WELD
WELD
WYE
1-1/2 IN. PVC
STAINLESS STEEL
SLOTTED BAND
COUPLING SIZED TO
FIT PIPE (COPPER,
PVC, CPVC)
ALTERNATIVE
THIS CONFIGURATION ALLOWS FOR
REMOVAL OF THE TRAP
SIZE TO FIT PUMP OUTPUT
Option 3: Plumbing to sink with a dedicated trap.

PLUMBING
TrueSTEAM Humidification System 69-2285—01 17
3/4 IN. MNPT X SWEAT
3/4 IN. FNPT X 1-1/2 IN. PVC
1-1/2 IN. PVC
1-1/2 IN. (MINIMUM)
PVC PIPE
3/4 IN. FNPT X 1-1/2 IN. PVC
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
M28680
ALL CONNECTIONS FROM
SOLENOID VALVE TO
DRAIN TRAP ARE SEALED
SINK
1-1/2 IN.
PVC TEE
1-1/2 IN. PVC
1-1/2 IN.
PVC
COUPLING
WELD
WELD
STAINLESS STEEL
SLOTTED BAND
COUPLING SIZED TO
FIT PIPE (COPPER,
PVC, CPVC)
SIZE TO FIT PUMP OUTPUT
ALTERNATIVE
THIS CONFIGURATION ALLOWS FOR
REMOVAL OF THE TRAP
THREADS
WELD
Option 4: Plumbing to sink trap.

APPENDICES
BEST
PRACTICE
If humidifier is in finished space, always install a drip pan
with wet switch. Honeywell recommends Diversitech WS-1
(wiring shown here).
TrueSTEAM Humidification System 69-2285—01
18
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).
65432
On
Off
1
24V
24V
HUM
HUM
C
GT
R
RT
GF
EXT
RED
TrueSTEAM
TERMINAL
BLACK
GREEN
ORANGE
Always pitch the remote Adapter Nozzle upwards
Use provided anchors if mounting
to drywall or plaster
If humidifier is in finished space, always
install a drip pan with wet switch.
Honeywell recommends Diversitech
WS-1 (wiring shown here.)
M28708