READ AND SAVE THESE INSTRUCTIONS
TRUE TOUCHSCREEN CONTROLLED ELECTRODE STEAM HUMIDIFIER
DESIGN SERIES “H”
INSTALLATION, OPERATION
AND MAINTENANCE MANUAL
CARNES COMPANY
448 S. Main St., P. O. Box 930040, Verona, WI 53593-0040
Phone: (608)845-6411
Fax: (608)845-6504
www.carnes.com
CARNES “H” SERIES HUMIDIFIER
On-Off-Drain
Switch
Fill Valve
True
Touchscreen
Fill Cup
Water Inlet
Contactor
High Water
Sensor
Circuit
Board
(Behind Door)
Blue
Fill LED
Voltage
Transformer
Red
Drain LED
Door Lock
Current
Transformers
Orange High
Water LED
Circuit
Breaker
Door
Interlock
Switch
“C” Cylinder
Drain Valve
Ground Lug
Distributor
Block
Drain Pipe
Photo A
(Model HBGH Shown)
FORM 16834-F
ISSUED: 03-15
1
TABLE OF CONTENTS
Introduction - Cautions ....................................................................................................... 3
Models ................................................................................................................................ 4
Installation ...................................................................................................................... 5-8
Electrical Data Sheet and Definition..............................................................................9-11
Humidifier Component Listing - Combo Unit HB/CAH, HB/CDH & HB/CGH................... 12
Controls .......................................................................................................................13-15
Operation .......................................................................................................................... 15
True Touchscreen - Displays and Internal Control .....................................................16-21
Start-Up and Operation .................................................................................................... 22
Fan Distribution Units ..................................................................................................23-24
Distribution Pipes.............................................................................................................. 25
Short Absorption Manifold ...........................................................................................26-27
Troubleshooting - Symptom, Cause and Action .........................................................28-32
Humidifier Specifications .................................................................................................. 33
Preventative Maintenance ................................................................................................ 34
Cylinder Selection............................................................................................................. 35
Terms, Conditions and Warranty...................................................................................... 36
2
INTRODUCTION
CAUTIONS
CAUTION! DO NOT INSTALL, USE OR OPERATE THIS EQUIPMENT UNTIL THIS
MANUAL HAS BEEN READ AND UNDERSTOOD. READ AND SAVE THESE INSTRUCTIONS FOR FUTURE USE.
CAUTION — Perform all basic safety steps before starting unit.
1. Proper mounting of unit cabinet to wall as described in following pages.
2. Make sure voltage and phase supply matches that of Product Identification Label located on left side of unit
cabinet and located on back plane in electrical section.
3. Qualified installers should be used for electrical and plumbing installation, being aware of all current and
corresponding codes.
WARNING: HOT SURFACES — Water/Steam and Distribution Methods
The process of humidification, using an electrode style humidifier, creates steam through the boiling process.
Temperatures of this boiling water and steam can reach 212°F (100°C). This system in turn, creates extremely hot
surfaces (cylinder surface, steam hose, steam pipe, condensate hose/pipe, distribution piping) and hot water or
visible/non-visible steam. Even discharged condensate water can be extremely hot. Contact with these surfaces
water or steam can cause personal injury. To avoid severe burns, always proceed with extreme caution. Before any
service or maintenance is performed, turn off unit, disconnect electrical service and allow humidifier unit to cool down
completely.
WARNING — De-energize Electrical Supply
Before any service or maintenance is performed make sure main power supply is disconnected and safety labeled
(If Carnes unit is set up with a built-in circuit breaker, turn off circuit breaker and additionally turn off main power
supply breaker). Failure to turn off main power supply could result in fire, electrical shock or both, resulting in damage
to property, personal injury or death.
CAUTION
Follow all recommendations, instructions and precautions in this Installation, Operation and Maintenance Manual to
maximize performance, maintain efficiency and to provide a safe operational environment.
3
HCHH
HCAH
HBGH
HRAB
HCDH
4
The humidifier must never be located outside or where it
may be exposed to freezing temperatures unless a heated,
ventilated weather proof enclosure by others is provided.
Do not mount humidifiers on a hot or vibrating surface.
INSTALLATION
UNPACKING AND INSPECTION
1. Cabinet keys are attached, by ty-rap, to side of
humidifier.
2. Open the cabinet and check for concealed shipping
damage. Report any damage immediately to the
carrier who delivered the shipment.
3. The following components are packed in a shipping
carton for connection when installing the humidifier.
A. Distribution pipe.
B. Steam hose.
C. Condensate return line.
4. Optional accessories may be packed with the cabinet
or in the same shipping carton. Large accessories may
ship in separate cartons.
5. Inside the cabinet is an envelope containing the
following items:
A. Steam hose clamps.
B. Condensate return line clamps.
C. Drain pipe fitting.
D. Installation, operation and maintenance manual,
yellow caution sheet for hose routing, replacement
parts list and spec sheet.
Table 1 - MAXIMUM OPERATING WEIGHT
Model
H_AH
H_DH
H_GH
H_HH
Fasten the mounting bracket to wood studs or solid wood
using fasteners shown in fastener recommendation below.
Place the mounting flange on the humidifier cabinet over
the mounting bracket. A sheet metal screw should be
installed through the back of the humidifier cabinet to
secure the humidifier to the mounting bracket. Fasteners
are not provided by Carnes.
Table 2 - FASTENER RECOMMENDATION*
*1/4” Lag Screw, 1” Minimum Length
MOUNTING THE HUMIDIFIER
Locate the humidifier cabinet level and plumb, using the
level screws (Photo B) on a surface as close to the steam
distributor as possible at a convenient height for servicing.
Allow 12” or more on each side for panel access and 16”
from the bottom of the unit to floor to allow for drain connections. If there is no common drain within close proximity of
humidifier, a drain pump (Carnes HXWA) may be required
to accommodate this distance. Allow 18”-38” respectively,
in front of cabinet for residential to dual cylinder unit, for
door opening or when necessary, remove door with quick
release pin. (Combo unit and dual cylinder unit have removable doors, residential does not.)
MODEL
H_AH
FASTENERS REQUIRED
4
H_DH
4
H_GH
4
H_HH
6
WATER SUPPLY CONNECTION
Use ordinary tap water (20 to 120 psi) - DO NOT use
hot water, DI (deionized water), RO (reverse osmosis)
water. Using mechanically softened water, or tap water
with conductivity over 800 Micromhos is not recommended. A 3/8” FPT fitting is provided at the bottom of the
humidifier for connection to tap water supply (top of humidifier for HRAA). A shutoff valve, not provided by Carnes,
must be installed just ahead of this fitting.
Photo B
DRAIN LINE CONNECTION
1. Locate the drain pipe fitting in accessory bag in unit.
Have proper tooling available to attach the drain pipe.
2. Connect the drain pipe fitting to the cabinet drain hole
on the bottom of the unit (Refer to Photo B).
3. Connect the drain pipe fitting to an S or P trap. Use
plumbing material capable of handling hot water. Also,
please include a 1” air gap fitting as part of the drain
plumbing. See Photo B.
Note: If the drain water pump accessory package is
used, follow instructions included with the drain water
pump package.
An air gap fitting
must be included
in drain plumbing
set-up (non-Carnes
installation).
See picture:
Leveling
Screws
NOTE: Drain Pipe
is NOT an air gap fitting.
Pounds
61
72
110
203
If you wish to purchase
an air gap from Carnes
it is an option.
(690-0176)
5
Figure A
Outer diameter of drain pipe is 1-1/4”. Air gap fitting must be added.
Photo C
STEAM DISTRIBUTOR PIPE LOCATION
Each steam cylinder requires a separate distributor
pipe, steam hose and condensate return line. A cylinder
may supply more than one distributor pipe by using an
accessory “T” fitting but the output cannot be controlled
separately. In a typical installation the humidifier is located
below the duct as shown in Figure A. The distance between
the humidifier cabinet and the steam distributor pipe should
be the minimum distance possible. Refer to Table 3 for
maximum length that may be installed, based on duct static
pressure. Under less than perfect conditions, (installation
issues, routing problems for steam and condensate return
hose and extreme steam hose lengths) it is possible to lose
significant amounts of lbs. per hour capacity.
TYPICAL HOSE LOCATION
FOR LENGTHS UP TO
12 FEET
Mounting plate
must be plumb.
Condensate hoses
must pitch down continuously to humidifier
— NO pockets, sags or
horizontal runs.
Figure A-1
The maximum length of steam hose that may be installed
as shown in Figure A & A-1 is 12 feet. For a steam hose
length over 12 feet refer to Figure B. A drain “T”, must be
used to remove condensation that occurs in steam hose
lengths over 12 feet. It is preferable to have the steam hose
rise vertically from the cabinet and then slope downward to
the distributor pipe as shown. If sufficient headroom is not
available it is possible to install with an upward slope but
the rise should be 2” in 12” to allow for proper condensate
drainage and steam flow. Carnes electrode steam humidifiers are non-pressurized, maximum of 1/2 psi. It is critical
to provide proper routing of flexible hose and hard tubing to
maximize efficiency and effectiveness. See Figure D. Every
application is different. Hose lengths for small capacity units
will be considerably shorter then larger units. All variable
must be taken into consideration.
MAXIMUM STEAM HOSE LENGTH (Table 3)
Duct Static
Pressure “wg”
0
1
2
3
4
5
Maximum Steam
Hose Length (Ft.)
40
35
30
25
15
10
AFFECT ON CAPACITY DETERMINED BY STEAM HOSE
LENGTH (Table 3-A)
Distance
10 Ft.
20 Ft.
25 Ft.
40 Ft.
If hose is difficult to
support within this
length, straight
copper tube should
be used and
insulation applied.
Loss
1.0 lb./hr.
2.0 lb./hr.
2.5 lb./hr.
4.0 lb./hr.
6
HOSE LOCATION
FOR RUNS FROM
12 FEET TO 40 FEET
When hose is difficult to support
within this length, straight
copper tube should be used
and insulation applied.
Mounting
plate must
be plumb.
If multiple pipes are used they should be staggered as shown in
Figure F.
Steam line
must pitch
down toward
drain tee —
NO pockets,
sags or
horizontal
runs.
Drain Tee
Figure F
Optional if
sufficient
head room
is not
available.
low
F
Air
Condensate hoses
must pitch down conTrap, if
tinuously to humidifier
condensate
— NO pockets, sags or
routes to drain.
horizontal runs.
To Drain
Figure B
Extended Length
Condensate
STEAM DISTRIBUTOR PIPE LOCATION (Continued)
Steam distributor pipes must be located on a plumb surface so
condensate that forms will run back into the return line. The pipe
should be located in the center of the duct to insure distribution
of steam into the airstream. A minimum clearance of 4” must be
maintained between the top of the duct and the distributor pipe.
The steam distributor pipes are usually located in the supply duct
downstream of the fan. When installed in packaged units the
distributor should be mounted just downstream of the fan
discharge.
It is important to locate the distributor pipe as far upstream as
possible from any obstructions in the ductwork so that air can
absorb moisture before it impinges on a surface and accumulates.
There must be a minimum of six feet between the distributor and
any fans, coils, filters, dampers, elbows or outlets downstream to
reduce the possibility of condensation.
It may be possible to minimize the absorption distance by using
multiple distributor pipes, or for extremely short absorption
distances, a manifold may be required (See Short Absorption
Manifold Section in this manual). Duct air temperatures below
50-60°F may require a condensate drain pan supplied by others
below the steam distributor pipe.
The distributor pipe may be located below the humidifier if the
installation is made in accordance with Figure G. A trap may
be necessary to prevent steam from flowing back through the
condensate return line.
Trap
Common Drain
Figure C
Figure D
12”
2”
Steam
.5”
Steam
12”
In a vertical duct with either upward or downward air flow the
distributor pipe should be installed horizontally as shown in
Figure E.
HOSE LOCATION
WHEN DUCT IS LOWER
THAN HUMIDIFIER
Mounting
plate must
be plumb.
Figure E
Drain Tee
Trap to
common
drain.
Figure G
7
Condensate hoses
must pitch down continuously to humidifier or
common drain — NO
pockets, sags or
horizontal runs.
Water trap required
to prevent live steam
from returning.
CONNECT THE STEAM HOSE
COPPER OR BRASS TUBE IS THE ONLY ACCEPTABLE
SUBSTITUTE FOR CARNES STEAM HOSE OR CONDENSATE
HOSE.
1. The steam hose should be installed so there is a continuous
rise from the humidifier to the distributor pipe. Support the
steam hose at intermediate points to prevent dips, pockets,
sags or horizontal runs. See Figure H.
2. Any turns should have a minimum radius of 8” to prevent the
hose from kinking. Fasten the steam hose to the distributor
pipe with one of the hose clamps provided.
3. Push the steam hose through the opening on the top of the
humidifier cabinet and slip over the outlet stub on the top of
the cylinder. Fasten the hose clamp provided.
4. If long lengths of steam hose, or hard tubing, are used, the
use of periodic “T’s” to drain condensate should be used.
See Figure C.
It is very important that both the steam hose and condensate
return line, whether flexible or hard tubing, be installed so there
are no sags, low points, dips or horizontal runs. The steam is at a
very low pressure and it cannot overcome any resistance caused
by accumulating water standing in the steam hose. Accumulation
in the condensate return hose will hamper the flow and may cause
water to enter the duct work by way of back up in distributor pipe.
Figure H
Exaggerated for emphasis.
Note: Over time and extended
heat, the situations described
in the previous paragraph can
occur. That’s why it is important to perform monthly visual
inspections to maintain and
correct, when necessary,
improper routing of steam
and condensate lines.
CONDENSATE RETURN LINE
1. Fasten the condensate return line to the distributor pipe with
the hose clamp provided.
2. Follow the steam hose to the humidifier cabinet and secure
the return line to the steam hose.
3. Connect the return line to the condensate return inlet with
hose clamp provided.
4. If it is impossible to maintain a drop to the top of the cabinet,
it is necessary to run the condensate return line directly to the
air gap drain fitting or some other drain.
5. A trap of sufficient size may be necessary to prevent loss of
steam through the return line and reduce the temperature of
condensate water to the common drain. Do not install a trap
if condensate is returned to the top of cabinet.
Figure I
Steam Pipe
1” Minimum Pipe Insulation
If it is difficult to install the steam hose to prevent sags, it is
recommended that copper tube be used as a substitute. If copper
tube is used, a minimum of one inch of insulation must be applied
to prevent excessive condensation (See Figure I). A short length
of steam hose must be used to connect the cylinder in the humidifier to the copper tube and another short length to connect the
copper tube to the distributor pipe. Size 3/4” copper tube (with
7/8” steam hose) can be used with steam cylinders having output
rates up to 30 pounds per hour. Size 1-1/2” copper tube (with
1-5/8” steam hose) should be used with steam cylinders having
output rates over 30 pounds per hour. Length restrictions shown
in the Maximum Steam Hose Length Table also apply to installations where copper tube is used and any use of 90° elbows add
approximately three feet of equivalent length, thus negatively
affecting loss of capacity, efficiency and effectiveness.
Hose lengths of no longer then 10-20 ft. and proper inclines or
routing, as expressed in this manual, will provide the best chance
of having a proper operating humidifier and efficient and effective
steam dispersion.
STEAM DISPERSION CRITERIA
1. Distributor pipe location must be at a minimum of 6 feet
upstream from any elbows, splits, coils, turning vanes, grilles,
diffusers, etc.
2. If temperature in duct is 55° to 60°F or less, recommended 10
feet of distance be used.
3. Under normal and average conditions, most absorption
distances will probably fall into the 4 to 5 feet length. This is
true, whether the unit is a 30 lb./hr. or less capacity or 30 lb./
hr. or more capacity.
4. If distance recommended can not be possible, then a drain
pan with drain capability may be required.
5. If the air in the duct can not hold the volume of steam, the only
recourse may be to lower the maximum output of the unit.
6. If shorter absorption distances are required, 3 ft. or less,
multiple distributor pipes could be used. 2 pipes split off one
steam hose or 2 pipes from a dual cylinder unit.
7. If even shorter absorption distances are required, 2 ft. or less,
then multi tube short absorption manifolds may be required.
INSTALL STEAM DISTRIBUTOR PIPE
EACH CYLINDER REQUIRES SEPARATE STEAM HOSE,
CONDENSATE RETURN LINE, AND STEAM DISTRIBUTOR
PIPE.
1. Steam distributor pipe must be mounted on a plumb surface.
When on a plumb surface the standard distributor pipe is
inclined upward. This is required so the condensate which
forms in the distributor pipe will drain to the return line and
back to the unit, or to a common drain.
2. Insert distributor pipe into duct and secure with four sheet
metal screws, not provided by Carnes.
3. Special distributor pipes are shipped with specific instructions
on how to mount them.
4. If the optional fan distribution unit is to be used, follow the
instructions included with the unit.
You must keep in mind that there are a lot of variables involved
in proper steam distribution and absorption distances (duct length
downstream from the dispersion method, required absorption
distance determined by design, capacity of humidification,
velocity of air flow, temperature of air flow, location of humidifiers, distance between humidifiers to distribution point and so
on). Since this is important to successful humidification, proper
planning must be a pre-requisite to good performance.
8
ELECTRICAL CONNECTIONS
POWER MUST BE OFF BEFORE MAKING ANY ELECTRICAL
CONNECTIONS.
Check unit electrical characteristics on label outside of cabinet. It
must agree with power provided to the unit. If it does not, contact
your Carnes Representative.
A fused disconnect or circuit breaker not provided by Carnes,
MUST be installed per local and national codes. See Table 4 for
recommended circuit ratings. The optional circuit breaker switch,
offered as an accessory, installed in the humidifier, is NOT for use
as a replacement for the required external disconnect switch, but
as a maintenance convenience addition.
1. Remove screws securing hinged panel for access to wiring.
See Photos D, E and F for different electrical locations.
2. An opening is provided on the bottom of the electrical
section. Bring electrical power lines through this opening and
connect to electric power terminals.
3. Connect cabinet ground terminals to an independent ground.
DO NOT use the neutral of a four-wire power supply.
4. Replace electrical cover panel.
HBHH
Incoming
Electrical
Screws
Residential Humidifier
Photo F
ELECTRICAL DATA SHEET DEFINITIONS
1. Optional Circuit Breaker column designates the presence,
quantity and amp rating of optional circuit breakers (except
for select models over 48 amps). In addition, as an option,
internally mounted, switchable on-off, circuit breakers are
available in models with an ‘HB’ prefix.
Screws
Incoming
Electrical
Photo D
2. Maximum Lb./Hr. designates maximum capacity of the
humidifier. Units are shipped from the factory preset at the
maximum rate. The output rate may be easily reset after
installation anywhere between 100% and 25% of maximum
capacity.
3. Voltage and Phase designate available phase and nominal
voltages. Single phase units may be operated from two legs
of a three phase supply but the load will be unbalanced.
4. kW is the power rating of the maximum output rate of the
humidifier. If a unit’s max output is adjusted lower, the kW is
reduced proportionally.
5. Line Amp and Disc. Size are amp ratings shown for use in
selecting electrical service requirements.
6. Steam Cylinder shows the quantity and model of steam
generating cylinders mounted inside the humidifier. Each
cylinder requires its own steam distribution pipe, steam hose
and condensate return line.
7. Cylinder Wire Current is the current a single cylinder wire
should be carrying for a given unit at max output. This does
not include ‘dummy’ electrode wires that never carry any
current, i.e. humidifiers with C65 cylinders and single phase
humidifiers not using AX cylinders.
Incoming
Electrical
Screws
(H_AH) (H_DH) (H_GH)
Humidifiers
Photo E
9
ELECTRICAL DATA AND UNIT DETAIL SHEET - Table 4
HBAH
HCAH
HSAH
HTAH
HBDH
HCDH
HSDH
HTDH
HBGH
HCGH
HSGH
HTGH
kW
Line
Amp
Disc.
Size
Optional
Circuit
Breaker*
Steam
Cylinder
Cyl Wire
Current
1
1.725
14.4
25
1-20 Amp
AX220
14.4
1
1.725
8.3
15
1-15 Amp
AX380
8.3
230
1
1.725
7.5
15
1-20 Amp
AX380
7.5
277
1
1.725
6.2
15
1-15 Amp
AX380
6.2
380
1
1.725
4.5
15
1-15 Amp
AX600
4.5
Model
Max
Lb/Hr
Voltage
Phase
H_AHAU
5
120
H_AHBU
5
208
H_AHDU
5
H_AHFU
5
H_AHLU
5
H_AHQU
5
415
1
1.725
4.2
15
1-15 Amp
AX600
4.2
H_AHMU
5
460
1
1.725
3.7
15
1-15 Amp
AX700
3.7
H_AHNU
5
575
1
1.725
3.0
15
1-15 Amp
AX700
3
H_AHAU
10
120
1
3.45
28.7
45
1-40 Amp
AX220
28.7
H_AHBU
10
208
1
3.45
16.6
25
1-25 Amp
AX380
16.6
H_AHDU
10
230
1
3.45
15.0
25
1-25 Amp
AX380
15
H_AHFU
10
277
1
3.45
12.4
20
1-20 Amp
AX380
12.4
H_AHLU
10
380
1
3.45
9.1
15
1-15 Amp
AX600
9.1
H_AHQU
10
415
1
3.45
8.3
15
1-15 Amp
AX600
8.3
H_AHMU
10
460
1
3.45
7.5
15
1-15 Amp
AX700
7.5
H_AHNU
10
575
1
3.45
6.0
15
1-15 Amp
AX700
6
H_DHBU
20
208
1
6.9
33.1
50
1-45 Amp
B380
33.1
H_DHDU
20
230
1
6.9
29.9
45
1-40 Amp
B380
30
H_DHFU
20
277
1
6.9
24.9
40
1-35 Amp
B380
24.9
H_DHLU
20
380
1
6.9
18.1
30
1-30 Amp
B600
18.1
H_DHQU
20
415
1
6.9
16.6
25
1-25 Amp
B600
16.6
H_DHMU
20
460
1
6.9
15.0
25
1-25 Amp
B700
15
H_DHNU
20
575
1
6.9
12.0
20
1-15 Amp
B700
12
H_DHCU
20
208
3
6.9
19.1
30
1-25 Amp
B500
19.1
H_DHEU
20
230
3
6.9
17.3
30
1-25 Amp
B500
17.3
H_DHTU
20
380
3
6.9
10.4
20
1-20 Amp
B600
10.4
9.6
H_DHWU
20
415
3
6.9
9.6
20
1-20 Amp
B600
H_DHGU
20
460
3
6.9
8.6
15
1-15 Amp
B700
8.6
H_DHHU
20
575
3
6.9
6.9
15
1-15 Amp
B700
6.9
H_DHCU
30
208
3
10.3
28.7
45
1-40 Amp
B500
28.7
H_DHEU
30
230
3
10.3
25.9
40
1-35 Amp
B500
25.9
H_DHTU
30
380
3
10.3
15.6
25
1-25 Amp
B600
15.6
H_DHWU
30
415
3
10.3
14.4
25
1-25 Amp
B600
14.4
H_DHGU
30
460
3
10.3
13.0
20
1-20 Amp
B700
13
H_DHHU
30
575
3
10.3
10.4
20
1-15 Amp
B700
10.4
H_GHBU*
30
208
1
10.3
49.7*
80
2-35 Amp*
C62
24.8
H_GHDU
30
230
1
10.3
44.9
70
1-60 Amp
C62
22.4
H_GHFU
30
277
1
10.3
37.3
60
1-50 Amp
C62
18.6
H_GHLU
30
380
1
10.3
27.2
45
1-40 Amp
C62
13.6
H_GHQU
30
415
1
10.3
24.9
40
1-40 Amp
C62
12.5
H_GHMU
30
460
1
10.3
22.5
35
1-30 Amp
C62
11.3
H_GHNU
30
575
1
10.3
17.9
30
1-25 Amp
C62
9.0
H_GHCU
40
208
3
13.8
38.3
60
1-60 Amp
C62
19.1
H_GHEU
40
230
3
13.8
34.6
60
1-50 Amp
C62
17.2
H_GHTU
40
380
3
13.8
20.9
35
1-35 Amp
C65
20.9
H_GHWU
40
415
3
13.8
19.2
30
1-30 Amp
C65
19.2
H_GHGU
40
460
3
13.8
17.3
30
1-25 Amp
C65
17.3
H_GHHU
40
575
3
13.8
13.8
25
1-20 Amp
C65
13.8
* = Circuit Breaker is REQUIRED per NEC 48 amp guideline.
10
ELECTRICAL DATA AND UNIT DETAIL SHEET - Table 4 (continued)
HBGH
HCGH
HSGH
HTGH
HBHH
HCHH
HSHH
HTHH
Model
Max
Lb/Hr
Voltage
Phase
H_GHCU
H_GHEU
H_GHTU
H_GHWU
H_GHGU
H_GHHU
H_GHCU*
H_GHEU*
H_GHTU
H_GHWU
H_GHGU
H_GHHU
H_GHCU*
H_GHEU*
H_GHTU
H_GHWU
H_GHGU
H_GHHU
H_GHCU*
H_GHEU*
H_GHTU*
H_GHWU
H_GHGU
H_GHHU
H_HHCU*
H_HHEU*
H_HHTU*
H_HHWU*
H_HHGU*
H_HHHU
H_HHCU*
H_HHEU*
H_HHTU*
H_HHWU*
H_HHGU*
H_HHHU*
H_HHCU*
H_HHEU*
H_HHTU*
H_HHWU*
H_HHGU*
H_HHHU*
H_HHCU*
H_HHEU*
H_HHTU*
H_HHWU*
H_HHGU*
H_HHHU*
50
50
50
50
50
50
60
60
60
60
60
60
80
80
80
80
80
80
100
100
100
100
100
100
125
125
125
125
125
125
150
150
150
150
150
150
175
175
175
175
175
175
200
200
200
200
200
200
208
230
380
415
460
575
208
230
380
415
460
575
208
230
380
415
460
575
208
230
380
415
460
575
208
230
380
415
460
575
208
230
380
415
460
575
208
230
380
415
460
575
208
230
380
415
460
575
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
kW
Line
Amp
Disc.
Size
Optional
Circuit
Breaker*
Steam
Cylinder
Cyl Wire
Current
17.2
17.2
17.2
17.2
17.2
17.2
20.7
20.7
20.7
20.7
20.7
20.7
27.5
27.5
27.5
27.5
27.5
27.5
34.4
34.4
34.4
34.4
34.4
34.4
43
43
43
43
43
43
51.7
51.7
51.7
51.7
51.7
51.7
60.3
60.3
60.3
60.3
60.3
60.3
68.9
68.9
68.9
68.9
68.9
68.9
47.8
43.2
26.2
24.0
21.6
17.3
57.4*
51.9*
31.4
28.8
26.0
20.8
76.5*
69.2*
41.9
38.4
34.6
27.7
95.6*
86.4*
52.3*
47.9
43.3
34.6
119.5*
108*
65.3*
59.8*
54.0*
43.2
143.5*
129.7*
78.6*
71.9*
64.8*
51.9*
167.3*
151.3*
91.6*
83.9*
75.6*
60.5*
191.2*
172.9*
104.7*
95.9*
86.4*
69.2*
80
70
40
40
35
30
90
80
50
45
40
35
125
110
70
60
60
45
150
150
110
80
70
60
200
175
100
90
90
70
225
200
125
110
100
80
300
250
150
150
125
100
300
300
175
150
150
110
2-35 Amp
1-60 Amp
1-40 Amp
1-40 Amp
1-30 Amp
1-25 Amp
2-40 Amp*
2-40 Amp*
1-50 Amp
1-45 Amp
1-40 Amp
1-30 Amp
2-60 Amp*
2-50 Amp*
1-60 Amp
1-60 Amp
1-50 Amp
1-40 Amp
2-60 Amp*
2-60 Amp*
2-50 Amp*
2-40 Amp
1-60 Amp
1-50 Amp
4-40 Amp*
4-40 Amp*
2-50 Amp*
2-45 Amp*
2-40 Amp*
2-30 Amp
4-50 Amp*
4-50 Amp*
2-60 Amp*
2-60 Amp*
2-50 Amp*
2-35 Amp*
4-60 Amp*
4-60 Amp*
4-35 Amp*
2-60 Amp*
2-60 Amp*
2-50 Amp*
4-60 Amp*
4-60 Amp*
4-40 Amp*
4-35 Amp*
2-60 Amp*
2-50 Amp*
C62
C62
C65
C65
C65
C65
C62
C62
C65
C65
C65
C65
C62
C62
C12
C12
C12
C12
C62
C62
C12
C12
C12
C12
C62 (2)
C62 (2)
C12 (2)
C12 (2)
C12 (2)
C12 (2)
C62 (2)
C62 (2)
C12 (2)
C12 (2)
C12 (2)
C12 (2)
C62 (2)
C62 (2)
C12 (2)
C12 (2)
C12 (2)
C12 (2)
C62 (2)
C62 (2)
C12 (2)
C12 (2)
C12 (2)
C12 (2)
23.9
21.6
26.2
24
21.6
17.3
28.7
26
31.4
28.8
26
20.8
38.2
34.6
21
19.2
17.3
13.9
47.8
43.2
34.2
24
21.7
17.3
29.8
27
16.3
15
13.5
10.8
35.8
32.4
19.7
18
16.2
13
41.8
37.8
22.9
21
18.9
15.1
47.8
43.2
26.2
23.9
21.6
17.2
* = Circuit Breaker is REQUIRED per NEC 48 amp guideline.
11
HUMIDIFIER COMPONENT LISTING - Figure J
1
23
8
2
3
7
4
6
5
9
22
10
12
11
1
13
14
20
3
21
15
HBDH
19
18
1.
2.
3.
4.
5.
6.
7.
8.
On / Off / Drain Switch
Circuit Board
Door Interlock Switch
Voltage Transformer
Current Transformer
Distribution Block
Ground Lug
Contactor
9.
10.
11.
12.
13.
14.
15.
16.
16
17
High Water Sensor
Fill Cup
Fill Valve
Steam Hose
Electrode Connector
LCD - True Touchscreen
Circuit Breakers (Option)
Cylinder
12
17.
18.
19.
20.
21.
22.
23.
Cylinder Fitting
Drain Valve
Lock
Water Inlet Hose
Water Inlet Fitting
Fill Valve Inlet Push - On Connector
Cooling Fan
CONTROLS
CONTROL OPTIONS - Figure K
CONTROL HUMIDISTAT
AIR FLOW DETECTION
CONDENSATION
PROTECTION
WALL HUMIDISTAT
PROPORTIONAL CONTROL
CARNES MODEL HXHCG
OR
WALL HUMIDISTAT (NEW)
PROPORTIONAL CONTROL
CARNES MODEL HXHAM
OR
WALL HUMIDISTAT
ON-OFF CONTROL
CARNES MODEL HXHAA
OR
DUCT HUMIDISTAT
PROPORTIONAL CONTROL
CARNES MODEL HXHCH
PRESSURE
DIFFERENTIAL
SWITCH
CARNES MODEL HXAAE
DUCT ON-OFF
HIGH LIMIT
HUMIDISTAT
CARNES MODEL HXHAD
OR
OR
AIR
FLOW
SWITCH
CARNES MODEL HXAAF
DUCT PROPORTIONAL
HIGH LIMIT
HUMIDISTAT
CARNES MODEL HXHCH
OR
OR
DUCT HUMIDISTAT (NEW)
PROPORTIONAL CONTROL
CARNES MODEL HXHAN
DUCT PROPORTIONAL
HIGH LIMIT
HUMIDISTAT (NEW)
CARNES MODEL HXHAN
OR
DUCT HUMIDISTAT
ON-OFF CONTROL
CARNES MODEL HXHAB
OR
TEMPERATURE COMPENSATED
(NEW) PROPORTIONAL or
ON-OFF HUMIDISTAT
CARNES MODEL HXHAMT
CONTROL HUMIDISTAT
If an on-off humidistat is used, the humidifier will generate steam at the max output rate and cycle on or off as
necessary to satisfy the conditioned area requirements.
All humidifiers are preset at the factory for the maximum
rating of the unit. The maximum output may be easily reset
to a lower limit in the range of 25-100% using the True
Touchscreen options.
If Carnes proportional humidistat is used the humidifier will
automatically vary the steam output rate in the range of
20-100% of the humidifiers maximum output (set by the
user) in response to the 0-10V signal from the humidistat.
However, the output of the humidifier will not drop below
20% of the preset nominal output of the humidifier set at
the factory. Proportional control provides less cycling of the
humidifier.
Either a wall humidistat or duct mounted humidistat in
the return air may be used. The wall mounted humidistat
is the most common as it allows the setting to be easily
changed to accommodate changing requirements or to
lower the level of relative humidity in the space to prevent
condensation on windows during extremely cold weather.
In applications where it may be desirable to prevent the
occupants of a space from changing the setting, a duct
mounted humidistat in the return may be used. This is
normally mounted in the equipment room or in the duct
where it is accessible only to maintenance personnel.
AIR FLOW DETECTION
The humidifier control circuit should include some method to determine air flow. If the steam distributor pipe is
located in a duct where there is no air flow and the control
humidistat is calling for humidity, steam would be
discharged into the duct where it would immediately
condense. Air flow may be detected by several methods. The humidistat circuit may be interlocked by using
a fan relay if the fan is direct driven. A fan relay is not
recommended if a belt driven fan is used as a broken belt
would stop air flow even though the fan relay was closed.
Among the alternatives are the use of a pressure
differential switch that determines air flow by sensing a
pressure differential caused by air movement in the duct.
A paddle type switch is also available to determine air
flow. The pressure differential switch is normally the preferred device as it is less susceptible to erratic operation
caused by improper positioning in the duct system. Paddle
switches require careful positioning in the duct to insure
sufficient air flow to activate the switch.
13
CONDENSATION PROTECTION
Figure L
A third device may be desirable to provide condensation
protection in the duct system. A high limit humidistat may be
installed ten feet downstream from the steam distributor pipe. This
humidistat is normally set to 90-95% RH and opens the circuit if
the humidity level in the duct exceeds the set-point. Use of this
device is recommended particularly when the humidifier is used in
applications where cooling air is being humidified or where a VAV
system may throttle back to a point where air flow is insufficient to
absorb the steam being introduced.
Either an on-off or proportional control high limit humidistat may
be used with Carnes humidifiers. If a proportional humidistat is
used the output of the humidifier will automatically be decreased
to reduce the possibility of condensation. Two proportional humidistats may be used to control Carnes humidifiers if desired, one
in the area to be humidified or return duct and another as a high
limit in the supply duct. The humidifier will automatically select the
lowest signal to control the humidifier output.
J10
TERMINAL
1/2 AMP
@ 24V
MAX
EXTERNAL
ON
EXTERNAL
SERVICE
ON/OFF
HUMIDISTAT
ON/OFF
HIGH LIMIT
HUMIDISTAT
AIR FLOW
SWITCH
ELECTRONIC CONTROL CIRCUIT BOARD
CONTROL HUMIDISTAT / TEMPERATURE COMPENSATED
Connections shown in Figure L are for typical on-off controls.
For Carnes proportional controls see the diagram Figure M. All
controls are shipped with detailed wiring instructions.
If your application has a requirement for an outdoor temperature
compensation feature, the HXHAT, or HXHAMT would satisfy.
Both controls will provide monitoring of RH percentage and
outdoor temperature, along with automatically adjusting the RH
set-point as outdoor temperature changes. The HXHAT is a dry
contact on-off humidistat, where as the HXHAMT provides a
0-10V signal in either a proportional or on-off configuration.
Figure M
CONTROL CONNECTIONS
The circuit board can provide either a Carnes legacy 18VDC or an
industry standard 24VAC, as a supply for those humidistats which
require it. The supply for both the control humidistat and high-limit
humidistat are output on pin1 of J16 and J17 respectively. 18VDC
is set as the supply default, but the jumpers on designators W5
and W7 can be moved to the left two pins to alternatively supply
24VAC as seen in Photo G (location of designators shown only, no
pins or jumper).
PROPORTIONAL HUMIDISTAT
(BY CARNES)
PROPORTIONAL HI-LIMIT
HUMIDISTAT
(BY CARNES)
EXTERNAL DDC CONTROL SIGNALS
Carnes humidifiers can also accept a 0-10 volt DC signal to
modulate the output of the humidifier. Polarity must be observed.
Input impedance is 20K ohms. If a 4-20 mA input signal is
provided to the humidifier a 470 ohm 1/4 watt resistor must be
installed as shown below (Figure N).
Figure N
+ -
+ -
0-10 VDC
PROPORTIONAL SIGNAL
(BY OTHERS)
0-10 VDC
PROPORTIONAL
HI-LIMIT HUMIDISTAT
(BY OTHERS)
470 OHM
RESISTOR
(BY OTHERS)
- +
Photo G
Two cylinder humidifiers may be wired for simultaneous or separate
and independent operation. Controls should be connected to the
terminals on the circuit board as shown below using No. 20 AWG
wire. Attempting to use two wires in a single control connection will
require a No. 22 AWG wire or less. See wiring diagram for parallel
connections. Avoid running control wiring near high voltage primary
wires, due to the possibility of interference and signal distortion.
+
4-20ma
PROPORTIONAL SIGNAL
(BY OTHERS)
14
-
470 OHM
RESISTOR
(BY OTHERS)
4-20ma
PROPORTIONAL
HI-LIMIT HUMIDISTAT
(BY OTHERS)
The circuit board also closes a power contactor allowing
current to flow to vertical electrodes sealed inside the
cylinder. Current flows between the electrodes using
minerals in the water as a conductor. The water is heated
to boiling and converted to steam which leaves the cylinder
through the flexible steam hose which is connected to the
steam distributor pipe.
The circuit board reacts to current flow between the
electrodes and automatically opens the fill solenoid valve
when more water is required to maintain the desired output rate, and closes when the desired rate is reached.
The operation of the drain solenoid valve is automatically
controlled by the circuit board which responds to any
changes in water conditions and drains the required quantity of water to provide stable operation and long cylinder life.
EXTERNAL MONITORING
Pins 1 and 2 connector J10, shown in Photo H, are provided for
indicating operation of the humidifier at a remote location. When
the unit is operating, pins 1 and 2 (EXT PWR) are closed. Pins 3
and 4 of connector J10 (EXT SRV) are provided to indicate the
need for service. A ‘Service Required’ button on the Home screen
of the LCD will indicate the type of service that is needed. Both
the EXT PWR and EXT SRV relays are rated at 125 Volts and 1
Amp maximum.
Figure O
STEAM
DISTRIBUTOR
PIPE
FILL
SOLENOID VALVE
AIR GAP
STAND
PIPE
NON CONTACT
HIGH WATER
SENSOR
STEAM
HOSE
FROM POWER
CONTACTOR
CYLINDER
VERTICAL
ELECTRODES
Photo H
OVERFLOW
TUBE
NETWORKING
If multiple units are required due to high capacity demand
(over 200 lbs. per hour, single unit), networking can be done. Units
can be interconnected with parallel signal wiring. This set up is
usually done to facilitate running multiple units from a single signal control (Humidistat, BMS System, etc.). For other networking
requirements, please contact factory.
DRAIN
SOLENOID
VALVE
STEAM
CONTROL CONNECTIONS
TO DRAIN
WATER
FOR SAFETY: MAKE SURE TO TURN OFF POWER AT THE
EXTERNAL DISCONNECT BEFORE MAKING ANY INTERNAL
CHANGES TO THE HUMIDIFIER.
1. A 7/8” opening is provided on the bottom of the cabinet.
The control wiring should pass through the opening to the
provided connection points at J16, J17 and J18.
2. If an air flow switch or high limit humidistat is not used, jumpers must be installed before the humidifier will operate. On
J17, jump pins 2 and 4 together to bypass the high limit. On
J18, jump pins 1 and 2 together to bypass the air flow switch.
As mineral deposits build up within the cylinder the water
level will slowly rise to uncovered electrode surfaces to
maintain the desired steam output rate. When mineral
deposits have covered all available electrode surface
areas, current flow will be reduced to a level where the
desired steam output cannot be reached and the service
light will signal the need for maintenance. When the
cylinder is filled with minerals it is easily changed in less
than five minutes, not including cool down time.
Important Note: Due to the many variables effecting the
operation of humidifiers (water condition, conductivity and
hardness, etc.) it could take up to 24 hours of operation
before a humidifier is truly operating normally and the water
is completely conditioned. Conditioned water is a state
where the amount of minerals dissolved within the water
is at a steady state. Conditioned water is more conductive
than new water from the fill valve.
OPERATION
When the circuit board verifies all four basic controls have
been satisfied (control humidistat, high limit humidistat,
air flow, door interlock), it will send a signal to open a fill
solenoid valve, allowing water to flow across an air gap
into a standpipe. The standpipe provides a column of water
to be fed into the cylinder using gravity. The air gap prevents the cylinder from pressurizing. The steam cylinder
normally operates at a pressure of approximately 1/2 PSI.
15
“DRAIN” LED
The DRAIN LED is a red light illuminated when the Drain
Valve is activated. An activated Drain Valve allows water
to drain from the humidifier. An analogous indicator, and
a description of its operation, is offered in the “Component
Activity” menu.
DISPLAYS AND INTERNAL CONTROLS
FRONT PANEL DISPLAYS & CONTROLS
The display on the front panel of the humidifier cabinet contains the “On-Off-Drain” switch, the LCD True Touchscreen
display and the “Fill”, “Drain” and “High Water” LED’s.
“HIGH WATER” LED
The HIGH WATER LED is an orange light illuminated
when the High Water Sensor is activated. An activated
High Water Sensor indicates that the water has risen to the
maximum allowable level in the cylinder. This can be a
normal situation, particularly if the cylinder is being filled
with mostly unconditioned water. An activated High Water
Sensor can also be a sign that the cylinder is close to
end-of-life and needs replacing, or, in rarer cases, the
cylinder is not conductive enough for the fresh water
entering the humidifier. An analogous indicator, and a
description of its operation, is offered in the “Component
Activity” menu. More information on troubleshooting High
Water situations can also be found through the “Help” menu
on the home screen.
HUMIDIFIER TRUE TOUCHSCREEN MENU PAGES
The humidifier True Touchscreen user interface uses color
conventions to help the user navigate the controls. The colors of
different buttons indicate the following.
1. Gray —
Figure P
Dim LCD is the only gray button. More information is available
in the “home” page description.
“ON-OFF-DRAIN” SWITCH
In the “On” position the humidifier will operate if all controls are calling for humidity. The “Off” position is used for
seasonal shut down if desired. The “Drain” position is used
to drain water from the steam cylinder for maintenance.
The fill solenoid valve will be on whenever the drain is
activated to reduce the drain water temperature.
2.
LCD TRUE TOUCHSCREEN DISPLAY
This LCD True Touchscreen display offers the necessary interface to control and monitor many aspects of the
humidifier. On the home screen is the current steam output
in Lbs./Hr. (or Kg/Hr). To select either is available in the
settings menu. A “Service Required” indicator and button
outlining current service issues, indicators for the four basic
controls necessary for operation (control humidistat, high
limit humidistat, air flow switch and door interlock), and
various buttons which navigate to other menu pages when
pressed are also available on the home page screen. The
menu pages and their capabilities are detailed further in
“True Touchscreen Menu Pages” section of this document.
3.
Orange —
Orange buttons represent the object or subject described
across the button. Most orange buttons have an indicator
next to them, which can change in color, e.g. green, yellow or
gray. Pressing orange buttons will bring you to a page which
describes the object or subject in question.
Yellow —
Yellow buttons navigate a user to a new page dedicated to
a set of functions. For example, the “Humidistat Demand”
button brings the user to a page that shows what percentage
demands both the Control and High Limit Humidistats are
currently requesting, and details their functions. The bottom of
each page, other than the home screen, has a square “Back”
or “Home” button dedicated to directing the user back to their
previous page.
4. White —
“FILL” LED
The FILL LED is a blue light illuminated when the Fill Valve
is activated. An activated Fill Valve allows water to flow into
the cylinder of the humidifier. An analogous indicator, and
a description of its operation, is offered in the “Component
Activity” menu.
White buttons are used for confirming or entering data into the
touchscreen. For example, they are used to confirm a change
to the “Max Output” parameter, or entering a password to
access the “Settings” menu.
16
5. Maize —
8.
Steam (orange) - Explains the status of the “Steam”
indicator light. The humidifier will only produce steam if the
“Steam” indicator light is green. The indicator will be brown
when the On/Off/Drain switch is in the “Off” position. It will
turn yellow if the switch is in the “On” position, but one or
more of the four basic controls are not satisfied (Control
Humidistat, High Limit, Air Flow, Door Interlock). The light
will turn green if all of the above switches and controls are
satisfied.
9.
Control Humidistat (orange) - Explains the status of the
Control Humidistat indicator light, and also shows the current
demand of the Control Humidistat.
Help buttons are used exclusively in the “Help” page. These
help buttons answer frequently asked questions about the
operation, maintenance and troubleshooting of the humidifier.
It is also a convenient place to look at humidifier electrical
data when an IOM is not available.
“HOME” PAGE
10. High Limit Humidistat (orange) - Explains the status of
the High Limit Humidistat indicator light, and also shows the
current demand of the High Limit Humidistat.
11. Air Flow (orange) - Explains the status of the Air Flow
switch.
12. Door Interlock (orange) - Explains the status of the Door
Interlock switch.
“SERVICE REQUIRED” PAGE
The home page is the main screen through which most other
pages can be accessed. The large blue square to the left shows
the steam output. The orange and yellow buttons on the home
page are considered “Operational & Status” indicators. Touching
any of these displays will show dialog explaining the subject or
status of that button. The orange buttons also have indicator
boxes to the left showing actual status. Green shows ready to
operate.
1.
Dim LCD (gray) - As a power saving feature, pressing the
Dim LCD button will shut the backlight of the LCD off. Once
off, pressing anywhere on the True Touchscreen will turn
the backlight on. The humidifier can also automatically turn
off the backlight after 15 minutes. See the “Settings” page
for more information on enabling/disabling the Auto-Dim
feature.
2.
Humidistat Demand (yellow) - Brings the user to a page
that shows what percentage demands both the Control and
High Limit Humidistats are currently requesting, and further
details their functions.
3.
Component Activity (yellow) - Button lists the internal
components used in the humidifier. Their respective
indicators showing whether the components are activated or
not. From this page, the user can view more information on
the components and their functions.
4.
Setpoints (yellow) - The three setpoints of the unit are
listed on this page. The setpoint is the target Lb./Hr. output
of the humidifier.
5.
Settings (yellow) - Any settings of the humidifier, e.g.
Max Output, Timers or Fan Speed, can be accessed through
this page. This page is password protected. For more
information, refer to the “Settings” page section.
6.
Help (yellow) - Frequently asked questions about the
humidifier can be answered through the Help page. It is a
convenient resource to resolve many issues quickly and
effectively.
7.
“SERVICE REQUIRED” PAGE
The “Service Required” page outlines any service issues that are
in need of being resolved. Many issues can be traced back to
variability in water parameters, and often the solution can be dealt
with through the changing of cylinders or modifying timer values
within the “Settings” page. This page is used to alert the user and
direct them on the right path towards resolution.
“HUMIDISTAT DEMAND” PAGE
The Humidistat Demand page lists both the Control Demand and
the High Limit Demand of the humidifier. Each demand signal
is represented by an orange button, and next to each button
is a numerical box specifying the percentage of demand each
humidistat is currently calling for.
Service Required (orange) - Invokes a page that describes
what service is needed by the humidifier, if any. Indicator
light to the left of the button turns red when service is
needed, and will otherwise remain green. Refer to the
separate “Service Required” page for more information.
17
continue normal operation. High water sensors can be cumulative
depending on the condition of the water.
The Control humidistat, which provides the Control Demand, is
normally the humidistat in the room being humidified. It is either
installed in the room itself or the return air duct. The High-Limit
humidistat, which provides the Hi-Limit Demand, is a safe-guard
humidistat installed in the supply duct roughly 10-15 feet past the
distribution tube. This humidistat is usually set to a high level (8090%), and will shut down the humidifier if the humidity gets too
high in the supply duct. Without a High-Limit humidistat properly
installed, the supply duct could reach a humidity level where any
steam entering the duct would readily condense.
The other item present on this screen is the Communication
button. The Communication button has a rotating indicator that
represents whether the True Touchscreen controller on the circuit
board is properly communicating with the microcontroller. If this
icon is not rotating and has a red ‘X’ through it, the information on
the screen is invalid and you should contact the factory.
Both Control humidistats and High-Limit humidistats are wired in
the same way, only Control humidistats are wired to port J16 of
the circuit board and High-Limit humidistats are wired to port J17.
Both ports have the same number of pins and connection layout.
“SETPOINTS” PAGE
When using an on/off humidistat, the percentage should be
either 100% or below 20%. In this case the control is either calling
for full output or no output. On-Off humidistats are dry-contact
switches. They will have two wires; each connected to pins 2 and
4 (in no particular order/polarity).
For a proportional humidistat, any percentage value is possible between 0% and 100%. In this case the humidifier can be
modified to output any fraction of its max output. If the proportional control falls to 20% or below, the humidifier is shut off. The
input signal of a proportional humidistat must be of the 0-10V DC
variety. Proportional humidistats will have three wires, with ‘power’
going to pin 1, ‘signal’ to pin 3, and ‘ground’ to pin 4.
In lieu of a humidistat, a DDC signal from a building
management system may also be used. Here, the ‘signal’ should
be connected to pin 3, and ‘ground’ to pin 4. In this case, ‘power’
can be ignored. A DDC signal must be of a 0-10V DC variety,
though a 4-20 mA control signal can be converted to a 0-10V
signal by adding a 470 Ohm resistor between the ‘signal’ (pin 3)
and ‘ground’ (pin 4).
The Setpoints page displays the setpoints (the target steam
output of the humidifier) associated with the unit. There are three
different setpoints, but only one setpoint is active at any given
time. Each setpoint is accompanied by the current value of the
setpoint to the right, and an indicator that represents its status.
For all setpoints, the following colors represent the status of the
setpoints:
“COMPONENT ACTIVITY” PAGE
Gray – The setpoint is inactive because it is not currently
necessary.
Green – The setpoint is active, and the humidifier is producing
steam at or above the setpoint value.
Yellow – The setpoint is active, but the humidifier is producing
steam below the setpoint value.
Yellow/Black X – The setpoint is inactive because it is being overridden by a setpoint with a higher priority.
The three different types of setpoint are as follows: The Max
Setpoint is the user-specified setpoint active when no external
controls or internal reduction is taking place. The Max Setpoint
is always modifiable via the “Max Output Adjust” within the settings menu. The Controlled Setpoint is the setpoint when a
humidistat (Control or High Limit), reduces the target output of
the humidifier due to changing room requirements. The Reduced
Setpoint is active when the unit requires a reduction in output due
to a high water situation.
The Component Activity page lists all internal components that
can switch on and off during operation. This includes the Fill
Valve, Drain Valve, Contactor, and High Water Sensor. Each
orange button in the component list is accompanied by a colored
indicator representing whether or not the component is currently
‘on’. Green indicates that the component is ‘on’, whereas gray
indicates the component is ‘off’. The Fill Valve is on when the unit
is either filling or draining the cylinder. The Drain Valve is on when
the humidifier is draining the cylinder. The Contactor is on when
the humidifier is producing steam. The High Water Sensor is on
when the humidifier has identified a high water situation. When in
a high water situation, the fill valve is disabled for 5 minutes. At
the end of 5 minutes the high water sensor light will go out, the
fill valve will open, if there is a call for more humidity, and unit will
The setpoints have the following priorities: The Reduced Setpoint
has the highest priority and always overrides the Controlled
Setpoint and the Max Setpoint when active. The Controlled
Setpoint has the next highest priority, and always overrides the
Max Setpoint. It should be noted that the Reduced Setpoint is
always lower than or equal to the Max Setpoint (or Controlled
Setpoint, if active), and the Controlled Setpoint is always lower or
equal to the Max Setpoint.
18
This page adjusts the Maximum Output of the humidifier. The
Maximum Output can be adjusted lower from the nominal output
value of the unit (set at the factory). The unit cannot be set lower
than 20% of the nominal value of the humidifier. The Maximum
Output value, when changed, also changes the Max Setpoint
value on the Setpoints page.
“SETTINGS”
Cylinder Life Counter –
The Settings menu is the page where all operational values can
be set. It is password protected by default, with a default password
of ‘1212’.
This page consists of a counter where the user can monitor the
life, in hours, of the cylinder. When changing a cylinder, press the
‘Reset’ button on this page to reset the timer. The Cylinder Life
Counter only counts the amount of actual runtime of the cylinder
(the time when the contactor is pulled in). The counter value is
saved even when the humidifier is powered down. The national average cylinder life is about 1150 hours, but this can vary
greatly depending on individual water conditions.
The password can be disabled under the ‘Settings Password’ on
the second Settings page. See ‘Settings Password’ section for
more details.
Fan Speed Adjust –
Any adjustment made to any setting can be done ‘on-the-fly’.
Which means when a change occurs, the humidifier will react
accordingly without the need of shutting off the unit or even
stopping steam output. In general, any page within the True
Touchscreen system can be accessed, monitored, or changed
‘on-the-fly’.
Max Output Adjust –
This page consists of a slider bar that can change the speed of
the fans when the humidifier is connected to an optional blower
box. This slider bar will not affect the operation of the humidifier
if no blower box is attached. The bar can change the speeds of
the fans from 0 to 100% of the max fan speed. Also displayed
on this page is an estimate of the current fan air output, in Cubic
Feet per Minute (CFM). This adjustment is particularly useful if the
humidifier is of a smaller capacity, and less noise from the fans is
appreciated.
19
Boil Down Timer –
Setpoint Timeout –
This page is where the Setpoint Timeout value is set. The
maximum amount of time allowed for the unit to reach setpoint
during a fill sequence is designated by the Setpoint Timeout. Its
default value is 30 minutes, but can be set as high as 255 minutes. After the timer expires during a fill sequence, the humidifier
assumes the drain valve is stuck open (due to sediment buildup),
and begins pulsing the drain valve to attempt to unclog it. After
the pulsing routine, the humidifier will attempt to reach setpoint for
a second and third time. After the third attempt without reaching
setpoint, the unit will shut down.
This page is where the Boil Down Timer is set. The Boil Down
Timer is variable between 0 and 255 seconds, with a default value
of 25 seconds. Setting the Boil Down Timer higher will result in an
increased water level, and less-conditioned water. This may be
helpful in reducing low water level induced arcing and corrosion of
cylinders. More water is consumed by the humidifier when the Boil
Down Timer value is increased.
Settings Password –
High Water Timeout –
This page is where the password for the settings menu can be
changed or disabled.
If the password for the Settings menu is forgotten, it can be reset.
To do this, remove power to the humidifier, move the jumper on
W4 from pins ‘1 and 2’ to ‘2 and 3’, and power the unit back on.
This page is where the High Water Timeout value is set. This
is the maximum amount of time allowed for the unit to run in a
‘Reduced Setpoint’ mode (See Setpoints page). The timeout has
a range from 0 to 168 hours, with the default being 24 hours. If
the humidifier setpoint is artificially reduced due to a high water
situation, the humidifier will continue to run. If the humidifier
cannot work it’s way back up the normal max/controlled setpoint,
the humidifier will shut down after the High Water Timeout value
elapses.
Return the jumper to pins ‘1 and 2’ afterward. Pins ‘1 and 2’ are to
the left, and pins ‘2 and 3’ are to the right.
The different yellow buttons on both setting pages allow for the
changing of different values. Below is a brief summary of each,
and more information can be accessed within the page itself.
20
Calibration Password –
The help pages consist of maize color buttons labeled with
questions. When a button is pressed, information will be given
answering and/or giving information about the subject in question.
A basic help page consists of text and/or diagrams to help the user
through basic problems.
This page is where the Humidifier Unit Code, the four digit number
identifying the humidifier, is programmed into the unit. This page
is password protected, and number should not be modified by the
end user. Contact the factory if further information is needed.
Corrective Drain Length –
For example, in the picture above the question of how to install a
high limit humidistat is answered with a diagram and corresponding text. Some pages consist of more buttons to help guide a
user through different processes. These buttons can be used and
referenced as needed.
Checkboxes –
There are a few operational options that do not need separate
pages, and therefore are only enabled/disabled via checkboxes on
the main Settings Page. Their functionality is described as follows:
This page is where the Corrective Drain Length is set. This value
represents how much water should be drained from the cylinder
when the humidifier senses a corrective drain is needed. As
water boils from the humidifier, minerals increase in the cylinder
causing the water to get more conductive. Increasing the length
of the drain flushes more conductive material from the humidifier,
decreasing the water conductivity.
The Drain Valve Pulse option is enabled by default. This option
allows the drain valve to pulse when the humidifier executes a
corrective drain. This actuates the water within the drain piping, allowing for minerals buildup to be discharged more easily. Enabling this option will make the unit noisier whenever a
corrective drain is executed.
The input here is a percentage value. To set the Corrective Drain
Length to drain 20% of the cylinder during a corrective drain, input
020. To drain all of the tank, input 100. 30 is the default value, and
only multiples of 10 between 20 and 100 can be entered.
The 72-Hour Drain is disabled by default. This option, when
enabled, allows the humidifier to drain the cylinder completely after
72 hours of idle operation.
The LCD Auto-Dim is disabled by default. This option, when
enabled, will automatically turn off the backlight of the LCD after 15
minutes of idleness. This feature can save on energy consumed.
“HELP”
The Kg./Hr Readout is disabled by default. This option, when
enabled, will turn the steam readout on home page, and in the
upper right hand corner of other pages, into Kg/Hr instead of Lb/
Hr.
21
START UP & OPERATION
INITIAL START UP
While the external disconnect is in the off position, be sure
that the terminal connectors on the top of the cylinder are
firmly secured and pushed completely down over the pins
in the cylinder.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
AUTOMATIC DRAIN CYCLE
The circuit board automatically controls the operation of the
drain valve to react to two situations:
CONTROLLING MINERAL CONTENT:
1.
When current reaches 10% above the active
set-point, the fill solenoid valve closes and
water gradually boils away in the cylinder.
Because the quantity of water covering the
electrode surface is being reduced, current
slowly falls.
2.
An internal timer within the operation
algorithm starts to count seconds when
steam output drops to 95% of set-point.
3.
The timer runs until steam output drops to
90% of set-point.
4.
If steam output drops too rapidly during this
transition, a corrective drain is necessary
to reduce the mineral concentration of the
water.
5.
If the steam output changes slowly it
indicates that mineral concentration is
satisfactory and a drain is not necessary.
6.
Measurements are made during each cycle
and a drain only occurs when necessary
thereby maximizing energy efficiency.
Open all water supply valves external to the
humidifier.
Turn external disconnect switch on.
Turn on optional circuit breakers if present.
For safety, door interlock disconnects power
to cylinder(s) when the door is opened.
The humidifier may be operated for service
purposes by pulling out the knob of the
door interlock switch into a fixed, always on,
positon.
CAUTION:
HIGH VOLTAGES ARE PRESENT.
Turn the “On-Off-Drain” switch to the “On”
position. The Steam Indicator on the LCD
should turn yellow or green.
The Steam indicator will turn green if all of
the basic four controls on the home page
are green. If not, the steam indicator will be
yellow.
Adjust the controls as necessary to satisfy the requirements for steam output (see
Controls and Home Page for more information). The humidifier will begin to operate if all
four controls are satisfied.
As water slowly fills into the cylinder, the LCD
Lb./Hr. output will begin to increase when
water comes in contact with the electrodes.
Water will continue to fill until output is 10%
above set-point. If water reaches top of the
cylinder before set-point is reached, the
“High Water Sensor” will be activated and the
fill will close.
When starting with a new cylinder and fresh
water, the fill and drain solenoid valve may
cycle for brief periods until water has come
to a compete boil.
In areas with low conductivity water, full output may not be reached until the humidifier
has conditioned the water by repeated cycles
of filling, boiling and refilling. The length
of this process will vary but may require
several hours, up to a day, under certain
conditions.
REDUCING OVERCURRENT
1.
If current to any electrodes in the cylinder
reaches more than 20% above the set-point,
the drain valve will open.
2.
Draining water from the cylinder reduces
current by covering less electrode surface.
3.
If current is successfully reduced to acceptable levels normal operation continues.
4.
If current is not reduced because of mineral blockage in the drain lines or solenoid
valve, the power contactor will be opened
for approximately 10 seconds while the drain
valve remains open.
5.
If current is successfully reduced, normal
operation continues.
6.
If current is not reduced the cycle is repeated 8 more times. If still unsuccessful, the
humidifier is placed in an overcurrent
shutdown, and the “Service Required” page
will be updated accordingly.
22
Fan distribution units must be mounted securely on a level and
plumb surface at least three feet below the ceiling for a Model
HXBHB and at least four feet below the ceiling for a Model HXBHC
to prevent condensing on the ceiling surface. Allow 20 feet in front
of the HXBHB and 30 feet in front of the HXBHC for the steam to
be absorbed into the air. Do not mount the units above any items
that would be damaged if a water leak or spitting were to develop.
FAN DISTRIBUTION UNITS
Fan distribution units are available for use in areas which do not
have duct systems or where duct air temperatures are too low
to provide sufficient humidification. For example, in computer
areas, the desired relative humidity may not be possible in the
conditioned space without causing condensation in the duct.
Fan distribution units may be either remote mounted or directly
mounted on the humidifier unit.
Fans
Box
Fans
12-1/2”
6-3/8”
6-3/8”
31-3/8”
25”
9-5/8”
Cooling
Fan
Inlet
Steam
Hose
12-1/2”
Photo J
Humidifier
Model
Nominal Steam
Output Rate
20”
H_AH
005, 010
HXBHB (1 Required)
H_DH
020, 030
HXBHB (1 Required)
H_GH
030, 040, 050, 060, 080, 100
HXBHC (1 Required)
H_HH
125, 150, 175, 200
HXBHC (2 Required)
Fans
11-3/4”
Remote Mounted
Fan Unit Model
Photo L
A Mounted Fan Distribution Unit and its associated humidifier
are shipped as a complete assembled unit. In this case, a 12-wire
connection is made from the circuit board to the 12-Pin fan
connection (Green). This connection is already assembled in the
factory.
12-Pin Fan
Connection
Cooling fan for
circuit board
when mounted
and remote fan
distribution unit
is used.
Photo K
999-5739
Cooling Fan included with all fan distribution units as well as with
all other units manufactured (exception is residential). As soon as
power is suppled, the fan will start to run from the 12 volt service
from circuit board.
23
A Remote Fan Distribution Unit comes with two separate male
plugs to connect 12-conductor wire from the humidifier to the fan
distribution unit at a remote location. One of the male connectors goes to humidifier female connector, the other goes to the
remote unit. We recommend Alpha Wire 1181C (Non-Carnes) as
an appropriate 12 conductor wire, but there are many available
that will suffice. Each conductor should be rated at minimum for
1 Amp. If individual wires are used, utilize 26 or 28 gauge wire.
When connecting the humidifier male ends to the wire, pin 1
of the humidifier connector should be routed to pin 1 of the fan
distribution unit connector. Pin 2 should be routed to pin 2, etc.
Use a small regular head screwdriver to connect each conductor into the male connector. It is important to make sure the
conductor is grasped inside the screw compression, and not the
wire insulation.
A remote fan distribution unit should not be mounted any more
than 40 feet away from the humidifier but this is dependent on the
capacity of the unit. Small capacity units cannot provide steam
at greater distance. See Table 3-A, page 6. When wiring the fan
distribution unit remotely, it is not absolutely necessary to wire
through the electrical conduit, but it is recommended for providing
some strain relief on the connector.
6-3/8”
20”
Photo M
24
STEAM DISTRIBUTOR PIPES
Lengths 012-036
5”
(127)
9-1/2”
(241)
T
3/8”
N
Lengths 048-120
4”
(102)
4”
(102)
T
N
3/8”
Distributor Pipes for Models: HBA, HCA, HBD, HCD
Distributor Pipes for Models: HBG, HCG, HBH, HCH
PIPE
HXPBB012S
N
11-13/16 (300mm)
T
7/8
HXPBB018S
17-13/16 (452mm)
7/8
PIPE
HXPBC012S
N
11-13/16 (300mm)
T
1-5/8
HXPBB024S
23-13/16 (605mm)
7/8
HXPBC018S
17-13/16 (452mm)
1-5/8
HXPBB030S
29-13/16 (757mm)
7/8
HXPBC024S
23-13/16 (605mm)
1-5/8
HXPBB036S
35-13/16 (910mm)
7/8
HXPBC030S
29-13/16 (757mm)
1-5/8
HXPBC036S
35-13/16 (910mm)
1-5/8
PIPE
HXPBB040S
HXPBB044S
HXPBB048S
HXPBB052S
HXPBB056S
HXPBB060S
HXPBB064S
HXPBB068S
HXPBB072S
HXPBB076S
HXPBB080S
HXPBB084S
HXPBB088S
HXPBB092S
HXPBB096S
HXPBB100S
HXPBB104S
HXPBB108S
HXPBB112S
HXPBB116S
HXPBB120S
Minimum**
Maximum**
N
35 (889mm)
39 (991mm)
43 (1092mm)
47 (1194mm)
51 (1295mm)
55 (1397mm)
59 (1499mm)
63 (1600mm)
67 (1702mm)
71 (1803mm)
75 (1905mm)
79 (2007mm)
83 (2108mm)
87 (2210mm)
91 (2311mm)
95 (2413mm)
99 (2515mm)
103 (2616mm)
107 (2718mm)
111 (2819mm)
115 (2921mm)
N
38 (965mm)
42 (1067mm)
46 (1168mm)
50 (1270mm)
54 (1372mm)
58 (1473mm)
62 (1575mm)
66 (1676mm)
70 (1778mm)
74 (1880mm)
78 (1981mm)
82 (2083mm)
86 (2184mm)
90 (2286mm)
94 (2388mm)
98 (2489mm)
102 (2591mm)
106 (2692mm)
110 (2794mm)
114 (2896mm)
118 (2997mm)
T
7/8
7/8
7/8
7/8
7/8
7/8
7/8
7/8
7/8
7/8
7/8
7/8
7/8
7/8
7/8
7/8
7/8
7/8
7/8
7/8
7/8
PIPE
HXPBC048S
HXPBC060S
HXPBC072S
HXPBC084S
HXPBC096S
HXPBC108S
HXPBC120S
Minimum**
Maximum**
N
N
43 (1092mm) 46 (1168mm)
55 (1397mm) 58 (1473mm)
67 (1702mm) 70 (1778mm)
79 (2007mm) 82 (2083mm)
91 (2311mm) 94 (2388mm)
103 (2616mm) 106 (2692mm)
115 (2921mm) 118 (2997mm)
T
1-5/8
1-5/8
1-5/8
1-5/8
1-5/8
1-5/8
1-5/8
NOTE A
The mounting plate on these pipes is adjustable to compensate for slight variations in ductwork dimensions. The
“N” dimension is shown at both maximum and minimum
depending on position of mounting plate. An infinite variety of settings are available between the minimum and
maximum. A mounting strap is provided on the end of the
pipe to secure to the top or side of the duct for support.
MATERIAL
Standard distributor pipes are fabricated from stainless
steel.
**See Note A
25
CARNES STEAM MANIFOLDS reduce the non-wetting distance when
required because of space constraints in duct system.
SHORT ABSORPTION
MANIFOLD
Carnes Steam Manifolds are designed to provide dry steam with rapid absorption in the duct
air stream. It achieves this by distributing steam
evenly across the face of the duct. The distance
needed for absorption is dependent on a number
of factors, some of which are air velocity, steam
volume, air temperature and characteristics of
air flow in the duct. For minimum absorption
distance, the manifold should be located in the
warmest air stream of the duct and where fully
developed laminar air flow occurs.
DESIGN
SERIES TYPE
H
X
M
B = “AX” or “B” Cylinder
C = 1 “C” Cylinder
D = 2 “C” Cylinders
A
C
WIDTH
0
3
• 304 Stainless steel steam distribution
tubes on three inch centers provide
extremely short absorption distances
HEIGHT
6
018 = 18”
Through
072 = 72”
(2” Increments)
0
2
4
• 304 Stainless steel manifold with
flexible EPDM connections for thermal
expansion without use of “O” rings
012 = 12”
Through
048 = 48”
(2” Increments)
• Strong galvanized flanged frame for
easy and fast connection to duct
• Factory assembled for reduced
installation costs.
Table 5
Duct Height
012
014
016
018
020
022
024
026
028
030
032
034
036
038
040
042
044
046
048
Tubes
1-1/2”
(38)
Duct Width
1-1/2”
(38)
4”
(102)
3
4
3” (76)
Type
D
5
6
7
8
9
Duct
Height
10
11
12
13
14
15
3” (76)
5”
(127)
3-1/2” (89)
26
Type
B, C
6”
(152)
CARNES STEAM MANIFOLDS with strong galvanized flanged frames are factory
assembled to reduce installation costs.
LOCATION OF MANIFOLD
Figure A
The manifold is usually located in the supply duct downstream of
the fan, heating coil, cooling coil, and/or filter. When installed in
packaged units, the manifold is to be mounted just downstream of
the fan discharge.
The non-wetting dimension is the distance necessary to prevent
condensation on any obstruction downstream from the manifold.
Condensation could occur on a cooling coil because of lower temperatures. Steam plumes may be visible beyond the non-wetting
dimension and may moisten high efficiency filters. Additional distance is required for installation upstream of high efficiency filters.
Carnes humidifiers operate at .5 psi or less so there are limitation on the length between the humidifier cabinet and the steam
manifold. The maximum distance depends on the static pressure
in the duct and is shown in Table 8.
MAXIMUM STEAM HOSE LENGTH
Duct Static
Pressure “wg”
0
1
2
3
4
5
Maximum Steam
Hose Length (Ft.)
40
35
30
25
15
10
Figure B
In a typical installation, the humidifier is located below the duct
and the steam manifold is installed as shown in Figure A. The
maximum recommended length of steam hose for this type of
installation is 12 feet.
For lengths beyond 12 feet additional steps are shown in Figure
B. If sufficient headroom is not available, it is possible to install
the steam hose with an upward slope with a minimum rise of 2”
for every 12” of run.
The steam manifold may be located below the humidifier if the
installation is made in accordance with Figure C. The steam
manifold cannot be installed in a vertical duct.
The manifold has an integral mounting flange for ease of
installation. Separate mounting flanges, supplied by others, are
needed to mate with the manifold. Refer to Figure D.
Figure C
If the steam manifold is used with a humidifier having two cylinders it will require two separate lengths of steam hose. Do not
combine the outputs of two cylinders into one steam hose.
It is very important that both the steam hose and condensate
return line be installed so that sags are prevented.
If it is difficult to prevent sags, it is recommended that copper
tube be used as a substitute. If copper tube is used, a minimum
of one inch of insulation must be applied to prevent excessive
condensation and contact with the hot pipe. A short length of
steam hose must be used to connect the plastic cylinder in the
humidifier to the copper tube and another to connect the copper
tube to the steam manifold.
Figure D
Size 3/4” copper tube can be used with steam cylinders having
output rates up to 30 pounds per hour. Size 1-1/2” copper tube
should be used with steam cylinders over 30 pounds per hour.
Length restrictions shown in Table 8 also apply where copper
tube is used and any 90° elbows add approximately three feet of
equivalent length.
27
TROUBLE SHOOTING - SYMPTOM, CAUSE AND ACTION - Table 6
SYMPTOM
CAUSE
ACTION
Arcing
*Naturally very high conductivity water.
*Drain lines restricted causing low water levels.
*Defective drain solenoid valve.
*Insufficient flow of incoming water. Levels low.
*Water may be too high in conductivity. Test water.
*Inspect & clean drain & tubing regularly.
*Repair, clean or replace as necessary.
*Maintain 20 psi or above. Clean strainer, repair,
clean or replace fill solenoid as necessary.
*Check kinks or severe bends in steam hose.
Check system static pressure.
*Shorten distance between humidifier & dispersion,
maintain proper incline in steam hose, eliminate as
many 90° or 45° bends, insulate steam line as
necessary.
*Do not use solutions to clean cylinders, dispose
as necessary. Solutions could cause chemical
reactions not conducive to good operation.
*See “Service Required” page for more information
regarding the problem.
*Make sure all control circuits are closed and the
humidifier is ‘On’.
*High back pressure in steam line.
*Excessive lengths of steam hose and/or
high static pressure.
“Service” indicator on
Water doesn’t fill
into cylinder (gray fill
valve indicator)
Water doesn’t fill
into cyclinder (green fill)
valve indicator)
Humidifier drains
continuously
Water in duct or spitting
from distributor pipe
*Attempted cleaning of cylinder by flushing or
banging producing flakes causing restricted
lines.
*Various.
*All 4 basic control signals not satisfied.
*Fill valve strainer is restricted.
* Fill valve is defective.
*24 Volts AC not coming from circuit board.
*Piece of mineral is partially blocking drain so
it will not close properly.
*Drain plunger is worn out, preventing drain
valve from closing completely.
*Steam hose & condensate return hose do not
have a continuous slope. Condensate
accumulates and gets pushed out distributor.
*Condensate return is blocked, kinked and
prevents proper drainage of condensate
water and accumulates in distributor pipe
and pushed out into duct.
*Distributor pipe not installed properly or
manufactured properly, not allowing for a
continuous backward slope to steam hose and
condensate hose connection.
*If condensate return hose has a drop less then
12”.
*Condensate return is connected to top of unit,
but a trap was installed too close to elbow,
split, turning vane, grille or diffuser.
28
*Remove strainer from fill valve assembly and
clean.
*Repair or replace as necessary.
*Consult factory, replace circuit board.
*Cycle drain. If it does not clear, clean as
necessary.
*Repair or replace as necessary.
*Improve routing of all hoses and/or install
condensate drains as necessary. Add a trap in the
steam hose in front of the distributor.
*Eliminate restriction in hose and routes as
required for proper flow of condensate water.
*Re-assemble, repair or replace as necessary.
*Route the condensate return to a common drain
and include a trap.
*Whenever condensate hose is returned to top of
unit a trap is not required, remove it. Distributor
pipe must be a minimum of 6 ft. upstream from
elbows, grilles, etc. If temp. in duct is 60°F or lower
the distance should be 10 ft. If distance, as
mentioned, is not possible, a drain pan may be
required. If the air in the duct can not hold the
volume of steam, the only recourse is to reduce the
maximum output of the unit. If very short
absorption distances are required, a short
absorption manifold can be installed.
TROUBLE SHOOTING - SYMPTOM, CAUSE AND ACTION
(Continued)
SYMPTOM
CAUSE
ACTION
No LCD display
*The LCD has been dimmed.
*Voltage to the humidifier is not that which is
required per rating label.
*3 phase voltage but not all legs have power.
*Touch LCD screen.
*Change humidifier or make necessary changes to
confirm compatibility.
*Check electrical connections and make necessary
repairs or hook ups.
*Close all circuit breakers.
*Internal or external circuit breakers are not
closed.
*24 VAC supply to circuit board is not available.
Humidifier unable to
reach maximum output
or required set-point
*Capacity of unit is too low.
*Too high of a system static pressure.
*Back pressure in steam hose too high.
*Foaming.
*Wrong cylinder.
*Make sure the protection on the transformer is not
tripped (fuse or breaker). Confirm the required 24
VAC is leaving transformer. Make sure connection
to circuit board at J1 is intact. If situation does not
resolve, replace circuit board.
*Determine proper load calculation & capacity of
humidifier. Use properly sized unit.
*Supply air system must be evaluated if static
pressure is too high. Located & correct issue.
*Too long of steam line runs, sags, dips, horizontal
runs not allowing for proper condensate removal,
improper sloping of steam lines & condensate line.
*Remove impurities inside the cylinder. If cleaning
of cylinder was attempted, throw away.
*Make sure proper cylinder and configuration is
used.
WATER CONTROL
The water contained in the cylinder must be controlled, in order for the humidifier to function properly. The fill and drain
rates must be maintained. Filling too quickly can cause over-amping and automatic shutdown, circuit breaker tripping or
blown fuses. Filling too slowly can cause insufficient steam output or insufficient humidity levels. Water supply pressure
should be between 30 and 80 psig, ideally 55 to 60 psig. Draining too quickly can cause dangerous arcing and electrode corrosion. Draining too slowly can cause over-concentration and malfunction due to foaming. These are just some
examples of what can go wrong if the fill and drain rates are not controlled and maintained.
29
TROUBLE SHOOTING
SYMPTOM: LCD NOT ON
1.
Verify that voltage being supplied to the
humidifier is the same as that listed on the
rating label on the front left hand corner of
cabinet.
2.
If humidifier is 3-phase, verify that all legs
have power.
3.
If the humidifier has optional internal circuit
breakers, they must be on.
4.
Verify LCD is not in dimmed mode by
touching it.
5.
Verify that 24VAC is being supplied by
the voltage transformer by taking voltage
reading between TP6 and TP7 (Photo O).
Check the connection at J1 (Photo P).
6.
If 24V AC is not present reset the overload
protection (breaker or fuse) located on the
transformer.
7.
If 24V AC is present, the circuit board may
be defective.
Photo P
SYMPTOM: WATER DOESN’T FILL INTO CYLINDER
1.
Confirm that indicators for the four basic
controls are all lit green, and the humidifier is
switched ‘On’.
2.
If all four indicators are not green, consult the
“Controls” section of the IOM.
3.
If all four indicators are green, and the
‘Steam’ indicator is green, check the service required page for a possible shutdown
scenario.
4.
If no service required information is available,
check the Fill Valve indicator (or the Blue
LED on the front). If on, check for 24VAC at
the coil of the fill valve. If 24VAC is present
water should be flowing if water is available.
Be sure all shut off valves ahead of the
humidifier are open.
5.
If water is available, check the fill valve
strainer for sediment. Strainer may be
checked by removing brass nut from input of
valve and reaching inside housing and pulling
out strainer.
6.
If 24VAC is present and strainer is clean, the
fill valve may be defective.
7.
If the High Water Sensor is activated, the fill
valve will not be allowed to open. In this case
the green indicator (and blue LED on front
panel) will be off.
8.
Make sure the drain solenoid is not partially open due to blockage, restriction or
malfunction.
Photo O
30
SYMPTOM: DRAINS CONTINUOUSLY
1.
The most common cause is to have a
piece of mineral in the drain solenoid valve
that prevents the valve from closing properly. Simply cycling the “On-Off-Drain” switch
back and forth between “Off” and “Drain” may
dislodge the sediment. In extreme cases it
may be necessary to disassemble drain lines
to clean them. If mineral buildup is re-occurring issue, make sure the “Repetitive Drain
Valve” option is enabled in the settings menu.
2.
Check movement of the solenoid actuator
to verify that the plunger moves freely in
the coil. If the coil has overheated so that
movement of the plunger is restricted, it will
require replacement of the valve.
3.
When the Drain Valve” LED is lit, the circuit
board is sending 24VDC to the drain valve.
If the indicator is gray but 24VDC is present
at the drain valve, the circuit board may be
defective.
Solenoid Valve
24V DC Coil
Terminals
2.
3.
4.
5.
Must Move Freely,
Clean As Necessary
Water
In - From
Cylinder
Fitting
6.
Water Out,
Into Drain
Valve Shown In
Normally Closed
Position
If water is condensing on an object in the duct or on the
duct itself it will be necessary to take other steps.
1.
The distributor pipe must be a minimum of
6 feet upstream from any elbow, split, coil,
turning vane, grille or diffuser. The lower
the air temperature is in the duct the further
upstream the pipe must be located. If the
air temperature is 60°F it may be necessary
to have 10 feet between the pipe and any
obstruction.
2.
If it is not possible to have the required
distance from the distributor pipe to an
obstruction a drain pan may be required to
accommodate the water.
3.
It may be that air in the duct simply can’t hold
the volume of steam that is being added.
Normally the only practical solution is to
reduce the steam output of the humidifier, as
it is usually not feasible to increase the air
temperature or quantity.
Clear Plastic End Cap,
Dependent on Model, Could
Be In 3 Different Positions
SYMPTOM: WATER IN THE DUCT
Note: This is usually an installation problem. The first step
is to determine whether water is spitting from the steam
distributor pipe or if steam is condensing on some object
downstream from the steam distributor pipe.
If water is spitting from the steam distributor pipe there may
be several causes.
1.
steam hose it may be suddenly pushed
into the distributor pipe and the condensate
return line may be unable to handle the large
volume.
Make sure that the condensate return line
is not restricted anywhere. Areas where the
hose bends or where it is tied using cable ties
are often the problem.
The distributor pipe must be installed so that
far end of the distributor pipe is higher than
the incoming end where condensate return
connection is located. The mounting plate
on distributor pipes up through 36” should
be mounted on a plumb surface to automatically provide proper pitch. On longer pipes,
it is necessary to support the pipe using the
bracket on the end of the pipe to insure that
proper slope is maintained.
If the condensate return line has a drop of
less than 12” from the distributor pipe to the
top of the humidifier cabinet, it may be better
to route the drain below the unit rather than
connecting at the top of the cabinet.
If the condensate return line is connected to
the fitting at the top of the humidifier cabinet,
make sure that traps have not been installed
in the return line. A trap is only needed if the
return line is routed to a separate drain and
it is necessary to prevent steam from being
discharged from the line.
It may be beneficial, particularly on longer
routes, to put a trap in the steam hose right
before the distributor pipe. In this case, it is
absolutely necessary to run the condensate
at the bottom of the trap away to a separate
drain.
The steam hose and condensate return
line MUST have continuous slopes without
any sags or low areas where water could
accumulate. If water accumulates in the
31
8.
SYMPTOM: ARCING IN THE STEAM CYLINDER
An occasional arc is not a problem. When a cylinder is
restarted after a long period of off time arcing may occur
as pieces of mineral flake off the electrode surface. During
a drain cycle, arcing may occur if water is very low in the
cylinder. Arcing is a problem if it occurs frequently or if
it causes dark brown or red discoloration in the cylinder.
The dark deposits are caused by deterioration of electrode
material and must be prevented. Arcing may be caused by
several conditions:
1.
2.
3.
4.
5.
6.
7.
Chemicals should not be used to attempt to prevent mineral build up in the cylinder or to dissolve
minerals that accumulate. Chemical treatment
may affect conductivity. Only untreated tap water
is recommended for use in the humidifier.
SYMPTOM: FOAMING
Foaming is usually due to foreign matter or impurities
getting into the cylinder through normal water supply.
Detergents, cleaning agents used to clean dirty cylinders
(Cylinders are not to be cleaned, but to be disposed of at
end of cylinder life), and water issues precipitated by very
slow or fast drain cycles. It is important to note that when
foam is generated it is as conductive as the conditioned
water and could, if circumstances are right, force a high
water level situation.
1.
Clean all water lines, replace if necessary.
2.
Replace cylinder.
3.
Reduce softening mix or concentration.
4.
Increase water volume by correcting drain
issues.
5.
Changing cylinder, but with a different
electrode configuration to accommodate the
water condition.
Incoming water may have high conductivity.
Conductivity, the ability to conduct current, is
measured in “micromhos”. In any electrode type
humidifier there are maximum values of conductivity that may be used in the humidifier. It is very
unusual for any naturally occurring water to have
conductivity that is too high for operation. It is recommended that water conductivity be less than
900 micromhos. If water is treated by a water softener its conductivity will be higher than untreated
water. As it is boiled away its conductivity also
increases at a higher rate than untreated water.
Softened water may be too high in conductivity to
operate without arcing.
Drain lines within the humidifier that have become
restricted by mineral deposits prevent proper
drain rates. This causes minerals to concentrate
inside the cylinder, which in turn causes low water
levels. Low water levels cause arcing. Drain lines
should be inspected when cylinders are changed
and thoroughly cleaned if necessary.
A defective drain solenoid valve will prevent proper draining. The solenoid should be checked to
verify that it moves freely when 24VDC is applied
to the coil. When placed in the “Drain” position,
both the drain and fill valves open and it is very
important the water level falls in the cylinder.
Insufficient flow of incoming fresh water will cause
arcing by causing low water levels. Since an
automatic drain is not initiated until set-point is
reached a drain will not occur if the flow rate is
too low. Therefore, if low water pressure at the
humidifier (below 20 psi) or a clogged water
strainer restricts the flow of water, arcing will
result.
High back pressure, which can be caused by an
obstruction in the steam hose, prevents fresh
water from entering the cylinder and results in
arcing. Care must be taken to prevent kinking of
steam hose when making bends.
Excessive lengths of steam hose in conjunction
with high duct static pressures cause low water
levels and arcing.
Frequent cleaning of the steam cylinder by
removing and flushing or by striking the side
of the cylinder potentially dislodges flakes that
can build up a “dam” in the drain lines. It is not
recommended that the cylinder be removed
except for replacement.
32
HUMIDIFIER OPERATIONAL SPECIFICATIONS:
1.
Provide self-contained electronically controlled steam generating
humidifiers of the size(s) shown on plans as manufactured by
Carnes Company, Verona, WI.
2. Carnes Humidifiers shall have the capacity to operate at
115, 208, 230, 277, 380, 415, 460 and 575 volt (or nominal value),
60 or 50 hz (cycle), single or 3 phase power. Specific combination of maximum output, voltage and phase for order application
determined by electrical data chart.
3. The humidifier(s) shall be UL and cUL listed.
4. The humidifier(s) shall have a total Color “True Touchscreen”
user interface. Features:
a. True Touchscreen navigation for all aspects of operation and
information access.
b. Cylinder life-counter (hours of operation. Found by accessing
Settings button.
c. With Fan Distribution Unit, there is a fan speed Slide Bar
control with CFM indication. Found by accessing Settings
button.
d. “Help” screen button.
e. “Service Required” button and indicator and corresponding
screen explaining service issues and possible troubleshooting
tips.
f. “Dim LCD” feature button.
g. “Humidistat Demand” indication button. Shows control
humidistat and high-limit humidistat.
h. “Settings button - where all operational values can be set.
i. “Setpoints” button - target steam output of the humidifier.
5. Steam shall be generated from tap water or softened water (see
factory representative) in a factory sealed cylinder containing
electrodes. Cylinders shall not require setting of electrode spacing, cleaning or maintenance and shall be of the disposable type.
6. The humidifier(s) shall include an automatic drain cycle controlled
electronically to maximize energy efficiency. Drain cycle shall
adapt to variations in water conditions (high/low conductivity and
high/low hardness) and not require manual setting. There is also
a default setting for a pulsing drain action to assist in keeping
drain lines open.
7. In the event of over-current, the humidifier shall signal that a fault
condition exists by message on touchscreen. Replacement type
fuses are not acceptable.
Option: Humidifier(s) shall also include secondary magnetic
overload switches (circuit breakers) that shall be manually
resettable and shall be of the type that positively disconnects
power to the steam cylinder.
8. Humidifier(s) shall include a door interlock safety switch to disconnect power to steam cylinder(s) when cabinet door is opened.
9. The system shall include one steam distributor pipe for each
steam generating cylinder mounting in the duct as shown on the
plans. Steam distributing pipe(s) shall be of corrosion resistant
design (copper or stainless steel) and be designed to provide
uniform distribution over the entire length of the pipe.
Option: Supply and install remote (or humidifier mounted) fan
distribution units to discharge steam directly into the conditioned
space.
Provide the following components:
a. Three 12VDC fans operated by circuit board.
b. Integral steam manifold trap.
b. Remote mounted on/off, proportional control humidistat.
Option: When plans call for a specific short absorption
distance from dispersion system, a multi-tube Short Absorption
Manifold is available sized specifically to duct dimensions, with
horizontal stainless steel cross tubes and vertical headers.
10. The system shall include flexible hose to connect the steam
cylinder(s) to the steam distributor pipe(s). A separate condensate return line shall return condensate to the humidifier for reuse
to minimize consumption. If due to specific routing issues or application of unit, condensate line can not run back to unit, the line
can go directly to the common drain, and the addition of a “circle”
or “U” trap will be required (see IOM). Long distances from unit to
common drain can be accommodated with accessory option
Water Pump (HXWA). Hard tubing can be used for Steam
Hose and Condensate Return to prevent sags, restrictions or
obstructions (see IOM), but it is recommended a minimum of 12
inches of flexible hose be used from unit and before distributor
pipe. We recommend a maximum distance of 30 feet from unit
to distributor pipe(s) or short absorption manifold and proper
routing and inclination of hoses and hard tubing be adhered to for
proper, overall consistent and dependable operation.
11. The humidifier(s) shall incorporate a 1” air gap on the fill water
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
33
line to prevent backflow. It is recommended that a drain air gap
fitting be installed by a non-Carnes contractor to prevent backflow
of water. Carnes offers an air gap fitting as a purchased option.
The humidifier cabinet(s) shall be constructed of 20 gauge
steel with a stainless steel bottom pan, protected by a dipped
electrostatic baked enamel undercoat with multi spec textured top
coat with black accent architectural grade. The cabinet door shall
be hinged and provided with a lock and key. The main door is
also provided with a quick release pin for removal to provide easy
access to internals. The True Touchscreen Home Page will show
a digital LCD steam output meter calibrated in pounds of steam
per hour (kg of steam per hour selection is included as a built in
option), fill cycle, drain cycle and high water indicator lights will be
visible with the cabinet door closed.
The humidifier(s) shall be controlled by a humidistat which
operates through the solid-state circuit board. Humidifier(s) shall
incorporate terminals for connection of humidistat, air flow switch
and high limit control humidistat.
Option: Provide the following accessory controls:
a. Wall mounted humidistat, on/off control.
b. Wall mounted humidistat, w/ LCD combo (NEW).
c. Duct mounted humidistat, on/off control.
d. Duct mounted humidistat, proportional control.
e. Duct mounted humidistat w/digital humidity and temperature,
combo (NEW).
f. High limit duct mounted humidistat, on/off control.
g. High limit duct mounted humidistat, proportional control.
h. Pressure differential type air flow switch.
i. Paddle type air flow switch.
j. Wall or duct mounted temperature compensated, on/off
or proportional control, digital display humidistat.
External Control Signals - All Carnes humidifiers will accept
external DDC control signals of 0-10 volt DC. Signal to modulate
the output of humidifier. Polarity must be observed and input
impedance is 20K ohms. If 4-20 mA signal is provided a 470 ohm,
1/4 watt resistor must be installed. Humidifiers will also accept
internal (BMS) building management system or (BAS) building
automation system signal.
The fill water line shall include a strainer to remove sediment
from incoming water and a flow regulating control to automatically
compensate for water pressures from 20-120 psi.
Humidifier(s) shall include a “Service Required” button with
indication light on the total “True Touchscreen” home page which
shall explain serivce issues and possible troubleshooting tips. The
light shall be visible with the cabinet door closed and terminals
shall be provided for remote signal. Terminals are also provided
to indicate normal operation to a remote location.
Dedicated buttons with indicator lights on the home page of
the total “True Touchscreen” shall indicate status of the control
humidistat, high limit humidistat, air flow switch and door interlock
switch. Operation of fill solenoid, drain solenoid, power contactor and high water sensor shall be shown after accessing the
“Component Activity” button on the home page of the total “True
Touchscreen”.
The humidifier(s) electronic circuit board shall include automatic controls to compensate for varying water conditions without
changing cylinders or electrode spacing. The control shall activate the fill and drain solenoid valves to automatically maximize
efficiency. Unit will perform system self-correction procedures to
assist in preventing unit shutdown due to any fault in operational
sequence. A drain pulsing feature is included to assist in expelling
any blockage that may occur during a self-correcting drain cycle.
If self-correction procedures are unable to correct problems after
specific cycles, unit will automatically shutdown.
The humidifier(s) shall include a non water contact capacitance
proximity high water sensor to prevent overfilling and loss of
water.
The fill solenoid valve shall open whenever the drain solenoid is
activated, whether in automatic or manual operation, to prevent
discharge of boiling water into drainage system. Drain light shall
indicate the switch is in drain position.
Humidifiers, dependent upon capacity, will have one (1) or two (2)
cylinders for operation. If a capacity is desired of 125, 150, 175
or 200 lbs./hr., the units will be equipped with two (2) cylinders,
each independently and separately controlled by their own control
signal.
Automatic Drain of cylinder water will take place when there is a
demand signal loss for 72 hours. Unit will remain in stand-by in
the event that a quick start-up is required.
PREVENTATIVE MAINTENANCE:
6. Visually check cylinder for extreme amounts of residue
on the inside surface. Very high level of water or unit
unable to provide full capacity may be an indication
of end of life cycle of the cylinder. Do not attempt to
clean out with chemicals, do not stick screwdrivers or
other objects into cylinder to clean out sediment. These
cylinders are made to be replaced at end of life cycle.
Life Cycle of Cylinder is more often then not determined by the condition of the water used in the unit,
especially hardness, % of max output, or run time (24/7,
8 hr./day, etc.). Refer to this IOM or main humidifier
catalog for more information.
7. Visually and manually check all wire and plug
connections inside unit. Include the wire connections
to the top of the cylinder. If a Red 90° connector is
used, be sure to check the inside of the connector for
a set screw. This screw needs to be checked for tightness. Make sure control wires at the J16, J17 and J18
terminal connections, bottom of the circuit board, are
tight.
8. Monthly - remove drain air gap and check for any
sediment build up that may block any free flow of water.
RECOMMENDED MONTHLY PREVENTATIVE
MAINTENANCE FOR HUMIDIFIERS
Servicing contractor or maintenance agent - be prepared to:
1.
2.
3.
4.
5.
Investigate and observe
Recognize issues
Determine procedures
Implement solutions
Inform customers
Preventative Maintenance is not intended to replace quality
manufacturing and assembly from the company of origin.
Products get older, wear and tear occurs, personnel changes and simple attention to detail sometimes becomes lax.
Basic Preventative Maintenance for humidifiers should
be required follow-up for continued proper operation of
products. Preventative Maintenance is a means to prevent
future costly failures.
The following are recommended Preventative Maintenance
procedures for humidifiers on a monthly basis: PLEASE
FOLLOW ALL REQUIRED SAFETY PROCEDURES
BEFORE WORKING ON HUMIDIFIER UNITS.
These check points for the “H” series humidifier are
basic, but significantly covers the entire unit. Keeping a
Preventative Maintenance record would be recommended
to show maintenance performed and any observations
made during inspection.
1. Visually inspect steam hose(s) and condensate hose(s)
for proper routing and installation from humidifier unit.
Prevent sags, dips or kinks in hoses. Eliminate horizontal runs. Make sure of adequate slope up for steam
hose and slope down for condensate return. Correct as
necessary. Recommend no hose lengths longer then 30
to 35 feet. Refer to early pages of this IOM.
2. Visually inspect steam hose and condensate attachment to dispersion pipe or short absorption manifold.
Recommend periodic removal of dispersion systems for
inspection (restricted dispersion holes, damage, plumb
mounting and clamping tightness).
3. Humidifier Unit - inspect internal hoses for sediment
build up or degradation. Clean or replace as necessary. Also, check tightness of hose clamps. Tighten as
necessary.
4. Inspect fill valve strainer. Industrial/Commercial unit
fill valve strainer is located at the connection point of
the water inlet hose to valve. Strainer is located inside
the valve at the threads. Pop out and inspect. Clean
or replace as necessary. Residential Unit - disconnect
inlet hose to solenoid valve assembly, remove solenoid
valve from unit and visually check filter screen inside
inlet port. Clean as necessary.
5. Visually check operation of the drain solenoid valve,
smooth operation and 100% seal when normally closed.
If necessary, remove solenoid valve, disassemble and
clean or replace as necessary.
34
!
WARNING
UNAUTHORIZED MODIFICATION OF THIS HUMIDIFIER OR USING UNAUTHORIZED
REPLACEMENT PARTS MAY CAUSE MALFUNCTION WITH RISK OF SERIOUS
PERSONAL INJURY AND WILL VOID ALL PRODUCT WARRANTIES.
Replacement humidifier cylinders can be ordered
from your local Carnes Sales Representative.
Please contact them directly or fill in the information below and either mail or fax (608/845-6504)
to the Carnes Company. We will then have our
Sales Representative contact you.
Models Available
HXCBAX145
HXCBAX220
HXCBAX380
HXCBAX500
HXCBAX600
HXCBAX700
MODEL
LBS/HR
SERIAL NO.
POWER SUPPLY
Models Available
CODE
VAC,
HZ
PH,
AMPS
(Information requested above is on a label on the
outside of the humidifier cabinet on the lower left
corner)
HXCCB145
HXCCB220
HXCBB380
HXCBB500
Steam Cylinder Model:____________________
HXCBB600
HXCBB700
Quantity Required:_______________________
Name: ________________________________
Company:______________________________
Models Available
HXCBC6F
HXCBC6X
HXCBC61
HXCCC62
HXCBC63
HXCBC64
HXCBC65
HXCBC12
Address:_______________________________
City: __________________________________
State/Province______________Code ________
Phone: ( ______ ) ________________________
Fax: ( _____ ) ___________________________
“Due to ongoing research and development CARNES reserves the right to change specifications without notice.”
Copyright © 2015 Carnes Company. All Rights Reserved
35
TERMS, CONDITIONS AND WARRANTY
1.
ACCEPTANCE, GOVERNING PROVISIONS AND CANCELLATION.
This writing constitutes the complete and exclusive statement of the terms and conditions of sale of the products and/or services described herein, and Seller’s
obligation to sell is expressly conditioned upon assent to these terms and conditions. Buyer will be deemed to have assented to these terms and conditions unless Seller
receives written notice of any objection within 5 days of the date Buyer receives this writing. No additional or different specifications will be binding upon Seller unless
specifically agreed to in writing; failure of Seller to object to provisions contained in any purchase order or other communication from the Buyer shall not be construed as a
waiver of these terms and conditions nor an acceptance of any such provisions. No order accepted by Seller may be cancelled or altered by the Buyer except upon terms and
conditions acceptable to Seller, as evidenced by Seller’s written consent. In the event of such an approved cancellation by Buyer, Seller shall be entitled to payment for all
finished and in-process goods, as well as any costs incurred in the preparation of Buyer’s order to the date of cancellation.
2. DELIVERY, CLAIMS AND DELAYS.
Delivery of products to a carrier at Seller’s plant or other loading point shall constitute delivery to Buyer; and regardless of shipping terms or freight payment, all risk
of loss or damage in transit shall be borne by Buyer. Seller reserves the right to make delivery in installments, unless otherwise expressly stipulated herein, all such installments to be separately invoiced and paid for when due per invoice, without regard to subsequent deliveries. Delay in delivery of any installment shall not relieve Buyer of his
obligations to accept remaining deliveries. Further, use of the products by the Buyer shall constitute a waiver of any claim for delay.
Claims for shortages or other errors in delivery must be made in writing to Seller within 10 days after receipt of shipment and failure to give such notice shall constitute
unqualified acceptance and a waiver of all such claims by Buyer. Claims for loss or damage to products in transit should be made to the carrier and not to Seller.
Seller shall not be liable for any damage as a result of any delay due to any factor or event beyond Seller’s reasonable control, including, without limitation, an act
of God, act of the Buyer, embargo or other governmental act, regulation or request, fire, accident, strike, slowdown, a war, riot, delay in transportation, inability to obtain
necessary labor, materials, or manufacturing facilities. All such factors and/or events shall extend the delivery date for a period equivalent to the time lost by reason of such
factors and/or events, plus thirty (30) days.
3. CHANGES.
Seller may at any time make such changes in design and construction of products as shall constitute an improvement in the judgment of Seller. Seller may furnish
suitable substitutes for materials unobtainable because of priorities or regulations established by governmental authority or nonavailability of materials from suppliers.
4. PAYMENT.
Unless otherwise expressly stated on the face hereof, all prices are subject to change without notice; and the price of products on order but unshipped will be adjusted
to the price in effect at the time of shipment. Products are sold f.o.b. Seller’s plant unless otherwise stated.
Full invoice amount is due in 30 days from date of invoice (“due date”) unless otherwise expressly indicated on the reverse side, and a late payment charge of one and
one-half percent (1-1/2%) per month may be added to any invoiced amounts unpaid when due if not prohibited by law, otherwise at the highest lawful contract rate. Buyer
shall reimburse Seller, upon demand, for any costs of collection incurred by Seller, including reasonable attorneys’ fees. Invoices may be submitted as partial shipments are
made. If during the period of the contract the financial condition of Buyer does not justify the terms of payment specified, Seller may demand full or partial payment in advance
before proceeding with the contract. If shipment is delayed beyond the scheduled date by Buyer, payment shall be due in full when Seller is prepared to make the shipment.
If Buyer defaults in any payment when due, then the whole contract price shall immediately become due and payable upon demand, or Seller, at its option without prejudice
to other lawful remedies, may defer delivery or cancel this contract.
5. SECURITY INTEREST.
Buyer hereby grants to Seller a security interest in the products and the proceeds thereof, to secure payment of all sums to become due the Seller hereunder, and any
other indebtedness owing at any time by Buyer to Seller. The Seller shall have, upon a default in payment, all of the rights and remedies of a secured party under the Uniform
Commercial Code. Buyer shall execute and deliver upon Seller’s request financing statements to perfect the security interest, and Buyer shall take such further action as shall
be necessary or desirable to preserve and protect Seller’s security interest.
6. TAXES AND OTHER CHARGES.
Any manufacturer’s tax, retailer’s occupation tax, use tax, sales tax, excise tax, duty, custom, inspection or testing fee, or any other tax, fee or charge of any nature
whatsoever imposed by any governmental authority, on or measured by the transaction between Seller and Buyer shall be paid by the buyer in addition to the prices quoted
or invoiced. In the event the Seller is required to pay any such tax, fee or charge, Buyer shall reimburse Seller therefore; or, in lieu of such payment, Buyer shall provide Seller
at the time the order is submitted with an exemption certificate or other document acceptable to the authority imposing the same.
7. WARRANTIES.
Seller warrants products manufactured by it and supplied hereunder to be free from defects in materials and workmanship under normal use and proper maintenance
for a period of twelve months from date of shipment. If within such period any such products shall be proved to Seller’s reasonable satisfaction to be defective, such products shall be repaired or replaced at Seller’s option. Seller’s obligation and Buyer’s exclusive remedy hereunder shall be limited to such repair and replacement and shall be
conditioned upon Seller’s receiving written notice of any alleged defects no later than 10 days after its discovery within the warranty period and, at Seller’s option, the return
of such products to Seller, f.o.b. its factory, when such return is feasible. Seller reserves the right to satisfy its warranty obligation in full by reimbursing Buyer for all payments
it makes hereunder, and Buyer shall thereupon return the products to Seller. Seller shall have the right to remedy such defects.
THE FOREGOING WARRANTIES ARE EXCLUSIVE AND IN LIEU OF ALL OTHER EXPRESS AND IMPLIED WARRANTIES (EXCEPT TO TITLE) INCLUDING BUT
NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, PERFORMANCE, OR OTHERWISE, and in no event
shall the Seller be liable for claims (based upon breach of express or implied warranty, negligence, product liability, or otherwise) for any other damages, whether direct,
immediate, incidental, foreseeable, consequential, or special.
8. NON-LIABILITY FOR DAMAGED APPARATUS.
Seller will not be responsible or liable for any damage resulting from improper storage or handling prior to placing the products in service and will not assume any
responsibility, expense or liability for repairs made outside its works without proper written consent.
9. PATENTS.
Seller will, at its own expense, defend any suits that may be instituted by anyone against Buyer for alleged infringement of any United States patent relating to any
products furnished by Seller hereunder, if such alleged infringement consists of the use of such products, or parts thereof, in Buyer’s business for any of the purposes for which
the same were sold, and provided Buyer shall have made all payments then due hereunder and shall give to Seller immediate notice in writing of any claim of infringement
and of the institution of any such suit and transmit to Seller immediately upon receipt all processes and papers served upon Buyer and permit Seller through its counsel,
either in the name of the Buyer or in the name of Seller, to defend the same and give all needed information, assistance and authority to enable Seller to do so. In case of a
final award of damages in such suit Seller will pay such award but will not be responsible for any compromise made without its written consent. In addition to the foregoing,
if at any time Seller determines that there is a substantial question of infringement or in the case any such product is judicially held to constitute infringement and the use of
such product is enjoined, Seller may, at its expense, either procure for Buyer the right to continue using the product, or replace the product with non-infringing apparatus, or
modify it so that it becomes non-infringing, or remove the product and refund the purchase price and the transportation and installation costs thereof. In no case, shall Seller
pay any recovery based on Buyer’s savings or profit through the use of the product, whether the use be special or ordinary.
The foregoing states the entire liability of Seller for patent infringement; and in no event shall Seller be liable if the infringement is based on the use of the product for
a purpose other than that for which sold by Seller. As to any products furnished by Seller to Buyer manufactured in accordance with designs proposed by Buyer, Buyer shall
indemnify Seller against any award made against Seller for any patent, trademark or copyright infringement.
10. CONSEQUENTIAL DAMAGES; INDEMNITY.
SELLER SHOULD NOT BE LIABLE FOR ANY CONSEQUENTIAL, INCIDENTAL OR CONTINGENT DAMAGES WHATSOEVER.
Buyer shall indemnify the Seller against any and all losses, damages and expenses (including attorneys’ fees and other costs of defending any action) that it may
sustain or incur as a result of any claim of negligence, breach of implied warranty, strict liability in tort, or similar claims by Buyer, its successors and assigns and its customers
whether direct or indirect, in connection with the use of products furnished hereunder, including, without limitation, such as may be caused by the negligence of the Seller.
11. SHIPPING WEIGHTS.
Seller shall not be responsible for the accuracy of shipping weights. Such weights are correct only within the limits necessary for estimating freight. For foreign shipments
20% should be added to approximate shipping weight.
12. STORAGE.
If the products are not shipped within 15 days after notification to Buyer that they are ready for shipping, for any reason beyond Seller’s reasonable control, including
Buyer’s failure to give shipping instructions, Seller may store such products at Buyer’s risk in a warehouse or yard or upon Seller’s premises, and Buyer shall pay all handling,
transportation and storage costs at the prevailing commercial rates upon submission of invoices therefor.
13. TECHNICAL INFORMATION.
Any sketches, models or samples submitted by Seller shall remain the property of Seller, and shall be treated as confidential information unless the Seller has in writing
indicated a contrary intent. No use or disclosure of such sketches, models and samples, or any design or production techniques revealed thereby, shall be made without the
express written consent of the Seller.
14. REMEDIES AND JURISDICTION.
Buyer agrees and understands that this agreement with the Seller shall be governed by and construed in accordance with the laws of the State of Wisconsin without
giving effect to the conflict of law principles thereof. The Buyer irrevocably and unconditionally consent to submit to the exclusive jurisdiction of the courts of the State of
Wisconsin and of the United States of America located in the State of Wisconsin for any action, suits or proceedings arising out of or relating to this agreement and the
transaction contemplated hereby (and buyer agrees not to commence any action, suit or proceeding relating thereto except in such courts). Buyer agrees irrevocably and
unconditionally to waive any objection to the laying of venue of any action, suit or proceeding arising out of this agreement or the transactions contemplated hereby, in the
courts of the State of Wisconsin or the United States of America located in the State of Wisconsin and agrees not to plead or claim in any such court that any such action, suit
or proceeding brought in any such court has been brought in an inconvenient forum.
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