SATA STEAMaster+ SERIES Instruction manual

(10/04)
STEAMaster + SERIES
Installation, Operation & Maintenance Manual
ELECTRODE STEAM HUMIDIFIERS
Frederick, Maryland, U.S.A.
STEAMaster+ SERIES
Installation, Operation
& Maintenance Manual
Installation, Operation
& Maintenance Manual

(10/04)
STEAMaster+ SERIES
Installation, Operation & Maintenance Manual
IMPORTANT
BEFORE INSTALLING OR HANDLING THE HUMIDIFIER PLEASE CAREFULLY READ AND FOLLOW THE
INSTRUCTIONS AND SAFETY STANDARDS DESCRIBED IN THIS MANUAL AND ILLUSTRATED ON THE
LABELS ATTACHED TO THE MACHINE.
This humidifier produces non-pressurized steam by means of electrodes immersed in the water contained in the
cylinder-boiler (hereafter called the cylinder). The electrodes pass current through the water, which also provides
resistance, heating the water into steam, which is used to humidify environments or industrial processes, using
special distributors.
The quality of the water used affects the process of evaporation, so the humidifier may be supplied with untreated
water, as long as this is drinkable and not softened or demineralized; the evaporated water is automatically
replaced using a fill valve. This humidifier has been designed exclusively to directly humidify rooms or ducts, using
a distribution system. The installation, use and maintenance operations must be carried out according to the
instructions contained in this manual and on the labels applied internally and externally.
The conditions of the environment and the power supply voltage must comply with the specified values.
All other uses and modifications made to the humidifier that are not authorized by the manufacturer are
considered incorrect.
Liability for injury or damage caused by the incorrect use of the humidifier lies exclusively with the user.
Please note that the humidifier contains powered electrical devices and hot surfaces.
All service and/or maintenance operations must be performed by specialist and qualified personnel who
are aware of the necessary precautions and are capable of performing the operations correctly.
Disconnect the humidifier from the main power supply before accessing any internal parts.
The humidifier must be installed in accordance with the local standards in force.
The local safety standards in force must be applied in all cases.
The humidifier is made up of metallic and plastic parts. All parts must be disposed of according to the
local standards on waste disposal.
Warranty on materials: 2 years (from the date of installation, excluding the consumable parts, such as the cylinder
and electrodes).
Certification: the quality and safety of SATS products are assured by SATS’ ISO 9001 certified design and
production system, as well as listings from UL, cUL, CE, TUV and others.

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STEAMaster + SERIES
Installation, Operation & Maintenance Manual
TABLE OF CONTENTS
i
Models And Description Of The Components ....................................................................................................... 4
How The STEAMaster+ Works ............................................................................................................................ 5
Installation ........................................................................................................................................................... 6
Positioning ...................................................................................................................................................... 6
Removing the front cover .............................................................................................................................. 7
Fastening to the wall ................................................................................................................................... 7
Plumbing ......................................................................................................................................................... 8
Water supply ............................................................................................................................................... 8
Water drain ................................................................................................................................................. 8
Steam distribution .......................................................................................................................................... 10
Duct injection ............................................................................................................................................ 10
Room distribution blower units .................................................................................................................. 12
Power wiring .................................................................................................................................................. 13
Control wiring ................................................................................................................................................. 15
ASWH / ASDH – ASDH / ASDC Wall – Duct Temperature/Humidity Sensors ........................................... 17
HC-101 and HC-201 Wall and Duct Humidistats ....................................................................................... 18
PC-301 Air Proving Switch ......................................................................................................................... 19
Start-Up .............................................................................................................................................................. 20
Startup Checklist ........................................................................................................................................... 20
The HumiControl Controller ............................................................................................................................ 21
Start-up Procedure ......................................................................................................................................... 21
Starting with a new cylinder ....................................................................................................................... 21
Operation ........................................................................................................................................................... 22
Display Information ........................................................................................................................................ 22
Changing The Set Point ................................................................................................................................. 22
Activating Manual Drain ................................................................................................................................. 22
Accessing/Changing Configuration Parameters ............................................................................................. 22
Notes about special parameters .................................................................................................................... 25
Standard Factory Settings ............................................................................................................................. 26
Seasonal Shut Down ..................................................................................................................................... 27
The Remote Control ....................................................................................................................................... 27
Resetting the Hour Counter ........................................................................................................................... 28
Alarms ........................................................................................................................................................... 28
Trouble-Shooting ............................................................................................................................................ 32
Resetting Factory Defaults ........................................................................................................................ 33
Maintenance ...................................................................................................................................................... 34
Periodic checks ............................................................................................................................................. 34
Cylinder maintenance .................................................................................................................................... 34
Replacing the cylinder ............................................................................................................................... 34
Maintenance of the other plumbing components ....................................................................................... 35
Replacement Parts ........................................................................................................................................ 36
Single Phase Humidifiers .......................................................................................................................... 36
Three Phase Humidifiers ............................................................................................................................ 37
Wiring Diagrams ................................................................................................................................................ 39
Technical Specifications ..................................................................................................................................... 43
IMPORTANT: BEFORE beginning installation:
••
••
•Check for shipping damage to cartons. Mark the shipping waybill accordingly
•Open cartons and check for any hidden damage. Mark the shipping waybill accordingly.
•Check packing slip to ensure all items have been received. Notify SATS of any shortages or damaged
parts. You must notify SATS within 5 working days of any shortages.

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Installation, Operation & Maintenance Manual
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Models And Description Of The Components
Model Selection
SMP 025 H D 000 U 1
=STEAMaster Capacity (KG) H Control Power Version USA Cylinder Type
Plus 001 = 3.3 lbs/hr For use with: U = 208/1 Internal use only
003 = 6.6 lbs/hr On/off D = 230/1
1 = Disposable
Standard Conductivity
005 = 11 lbs/hr or W = 208/3
008 = 17.6 lbs/hr Modulating K = 230/3
2 = Disposable
Low Conductivity
009 = 20 lbs/hr or M = 460/3
010 = 22 lbs/hr DDC N = 575/3
015 = 33 lbs/hr
025 = 55 lbs/hr
035 = 77 lbs/hr
045 = 99 lbs/hr
065 = 132 lbs/hr
SMP 001 through SMP 015
No. Description
1 Steam generator cylinder
2 Water drain valve
3 Power contactor
4 Fuses
5 Power transformer
6 Relay board
7 On/Off and Manual drain switch
8 Wiring terminal block
9 Water fill valve
SMP 025 through SMP065
No. Description
1 Steam generator cylinder
2 Water drain pump
3 Water fill valve
4 Amperage transformer
5 Power contactor
6 Power transformer
7 Relay
8 Fuses
9 Wiring terminal block
10 Cable raceway
11 On/Off and Manual drain switch

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How The STEAMaster+ Works
STEAMaster+ is an electrode humidifier. It produces steam for humidification by passing electrode
current through the water in the steam generator cylinder between metal electrodes. There are no
heater elements. Steam output is directly proportional to the conductivity of the water, and the amount
of electrode immersed in the water.
On a call for humidity, the STEAMaster+ controller will open the water fill valve (1) and allow water to enter the system. A
flow restrictor (2) prevents the unit from filling too quickly or with too much pressure. The water flows up the fill tube (3)
and into the fill cup (7), where it flows over the conductivity probes (6), which feed the water conductivity back to the
controller for analysis. Water then flows over the dam in the fill cup (7), which creates a 1" air gap to prevent backflow of
contaminated water into the feed lines, and through the fill tube (4) and into the bottom of the steam cylinder (11).
As the water fills the cylinder, it will reach the electrodes (10) and current will begin to flow. As the water continues to fill
the cylinder, the current will increase, and this is monitored by an amperage transformer placed on one of the power wires
(9). When the desired current is reached, the fill valve will close (1) and the water will then begin to warm and produce
steam. If the water reaches the cylinder full probes (8) prior to reaching the desired current level, the fill valve (1) will be
closed to prevent overflow. If the current rises too much as the water fills the cylinder, the drain valve or pump (13) will be
activated to drain away some water and reduce the current flow.
Periodically, based on the incoming water conductivity, the unit will drain some water to reduce the mineral concentration.
A strainer (12) in the cylinder helps to prevent mineral debris from jamming the drain valve (13).
If there is no water in the cylinder, there will be no current flow and no steam production. The electrodes do not burn out,
but they will eventually become comletely coated with mineral and the cylinder will then need to be replaced or cleaned.

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Installation, Operation & Maintenance Manual
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Installation
Positioning
The STEAMaster+ has been designed for wall mounting
(although it can be placed on a stand) and, since it is an
atmospheric steam humidifier, should be placed close to
the point where the steam will be used, to minimize the
steam hose length (and condensate). Certain clearances
must be maintained around the unit:
A B C D E F
Minimum
Dimension
(inches)
12 8 8 16 28 0.5°
With room blower units, other clearances are needed:
A B C D E F H
Minimum
dimension
(inches)
20 72 72 24 20 72 24
Model - SMP
001-008 009-015 025-045* 045**-065
A 15 15 22 26
B 11 11 15 18
Dimensions
(inches) C 25 28 35 38
packaged 36 44 86 113
empty 30 38 75 97
Weight
(lbs) installed 42 60 134 207
* = SMP045 for 460-575/3 Vac
* = SMP045 for 460-575/3 Vac

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Installation, Operation & Maintenance Manual
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Mounting
Removing the front cover
The front cover is secured by a capture screw located underneath the SATS
logo. Twist the SATS logo to reveal the screw, and use a phillips head
screwdriver to remove it. Then simply lift the front cover and pull out to
remove it. Return it in reverse order.
Fastening to the wall
Using the screws and anchors supplied, fasten the mounting bracket to the
wall. Be sure that the screws anchor firmly into studs or supports. Note
the unit installed weights from the Positioning section.
Once the mounting bracket is secured to the wall, hang the unit on the bracket. Fasten the remaining capture
screws through the bottom holes in the unit to secure it to the wall
Model SMP
001-008 009-015 025-045 065
X 8.67 8.67 12.21 15.75
Y 19.69 23.23 28.55 30.91
Z 4.53 1.5
Z’ 4.41

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Installation, Operation & Maintenance Manual
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Plumbing
Water supply
The STEAMaster+ must be supplied with water (not softened) having the following characteristics:
Water drain
The STEAMaster+ also requires connection to a drain. The drain water characteristics are:
Model SMP
001-008 009-015 025-045 65
Instant flow rate 0.2 gpm 0.3 gpm 1 gpm 1.9 gpm
Connection 1/4" O.D. Compression 3/8" O.D. Compression
Temperature limits 34 to 104°F
Pressure limits 15 to 116 psi
Hardness limits <= 400 ppm CaCO3
Conductivity range 125 to 1250 µS/cm (micromhos)
Model SMP
001 003 005 008 009 010 015 025 035 045 065
Drain rate per hour 0.7 gph 2.2 gph 3.7 gph 5.9 gph 6.6 gph 7.3 gph 11 gph 18.3 gph 25.7 gph 33 gph 47.7 gph
Instant drain rate 1.3 gpm 6 gpm
Connection 1-1/2" nominal diameter
Typical temperature 212°F

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Water supply and drain connections are made according to the following diagram.
NOTE: Drain line must be trapped under the unit to prevent flash steam from condensing in the unit cabinet.
Physical location of the supply and drain connections are located as shown below.
SMP 010-015 SMP 025-065
NOTE: SATS can provide a drain tempering system which limits the water drain to no more than 140°F.
NOTE: Softened water should NOT be used as it is generally corrossive to the electrode plating.

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Installation, Operation & Maintenance Manual
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Steam distribution
Duct injection
If your STEAMaster+ humidifier was supplied with duct steam
distributor pipes, they must be mounted completely level in the
duct with the steam outlet holes facing up as shown to the right.
Support the end of longer distributor pipes if needed.
Distributor pipes should be mounted per the diagrams shown
below, with a minimum of 6" from the center of the distributor
pipe to the top of the duct and 3" minimum to the bottom.
Generally the distribu-
tor pipes should be
mounted in the center
of the air stream.
Multiple pipes need to
be staggered on a
diagonal to prevent
the steam discharge
from the lower pipes
from impinging on the
upper ones.
In vertical ducts, the distributor pipes are mounted in the center
with the holes facing up as shown at right. The airflow may be up or
down, but when the airflow is down, maximum velocity is 1,500
fpm.
To install the distributor pipes:
1. Cut a key shaped hole in the side of the duct to match the steam pipe and
condensate return.
2. Apply silicone sealant to the mounting plate and insert the pipe through the
hole and secure it with 4 sheet metal screws.
3. Connect the steam and condensate hoses using the hose clamps supplied.
IMPORTANT: Allow 2 feet of straight duct downstream of the distributor pipes when the air temperature will be
>55oF. Allow 3 feet of straight duct if the air temperature will be <50oF. Always allow 2 feet upstream. Turbulent
air flow may require longer lengths.

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IMPORTANT: Maximum length of rubber steam hose is 20 feet. Insulated copper tubing may be up to 40
feet. Hose sizes= 7/8" I.D. for units SMP001-003, 1 1/4" I.D. for units SMP005-015, 1-5/8" I.D. for units
SMP025-065.
Steam Hoses
NINETY PERCENT (90%) OF ALL OPERATION PROBLEMS ARE CREATED BY IMPROPER STEAM PIPING
FROM THE HUMIDIFIER UNIT TO THE DUCT DISTRIBUTOR PIPES.
To avoid these problems, remember one simple fact when running the steam hose: steam naturally flows up
hill, and condensate naturally flows down hill.
Nothing must impede the free flow of either steam to the distributor pipes or condensate back to the SD unit or
the drain. If Copper tubing is used, use two 45° angles or sweeping elbows rather than sharp 90° elbows.
Follow one simple rule: Run the steam hose or piping to avoid any kinks, sharp elbows, or low spots that could
collect or restrict the flow of steam to the distributor pipe, or the flow of condensate back to the humidifier.
Support the hose adequately to avoid sags.
The following diagrams are to provide you with some guidelines. If you have a situation you are unsure of,
please contact the factory for instructions.

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Room distribution blower units
Refer to the manual supplied with the Room Distribution Units for specifics on the blower units themselves.
Clearances required are shown below.
A B C D E F H
Minimum
dimension
(inches)
20 72 72 24 20 72 24
Model
SMP001 SMP003 SMP005 SMP008 SMP009 SMP010 SMP015 SMP025 SMP035 SMP045 SMP065
Room Blower
Unit Model VSDU0A VRDXL
Rated Power
Watts 30 35
Air Volume
CFM 100 380
Noise Level
dBA 50 40
Operating Temp/Humidity
(°F / %RH)
14 to 104°F
/ 10 to 60%
14 to 140°F
/ 10 to 80%
Cold rooms can be humidified using a Room Distribution Unit, making sure that this operates within its operating
limits. The room must have operating temperatures of between -10°C and +20°C, with a percentage of relative
humidity of no greater than 80% RH. If these limits are not possible, the steam can be distributed in the cold room
using a distributor pipe in duct work. In any case, the steam must not come into direct contact with air discharge
from the refrigeration unit in the cold room, to avoid possible condensation.

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Single Phase Terminals Three Phase Terminals
Power wiring
Check that the power supply voltage to be
connected matches the value indicated on the
rating plate inside the electrical panel. Insert
the power and ground connection cables into
the electrical panel compartment using the
strain reliefs supplied, and connect to the
terminals. An external fused disconnect must
be installed.
All wiring must be in accordance with local, state
and national electric codes.
NOTE: to avoid unwanted interference, the
power cables should be kept separate from any
control wiring.
Per the table on the following page, make sure
that the unit has the proper number of turns
through the TAM (Torroid Amperage Monitor),
which is on the control board in models
SMP001 through SMP015, and separate in
models SMP025 through SMP065. Also make
sure that the TA Rate DIP switches on the
control board are set correctly per the table.
In models SMP001 - SMP015 make sure that the TAM on
the circuit board has the proper number of power wire
turns through it, and that the TA Rate DIP switches on the
control board are set per the table on the following page.
In models SMP025 - SMP065 the TAM is independent and the jumper must then be on the right terminals per the
table on the following page.

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Model
Voltage
Code
Voltage
Phase
Nominal
Current
(Amps)
Power
(kW)
Output
(kg/hr)
Output
(lbs/hr)
Turns
Through
TAM
TA Rate
Wire
Size
(mm)
U 208 - 1~N 5.4 1 20 1.5
SMP001 D 230 - 1~N 4.9 1.12 1.5 3.3 2 20 1.5
U 208 - 1~N 10.8 2 60 2.5
D 230 - 1~N 9.8 1 20 2.5
W 208 - 3~ 6.2 1 20 2.5
K 230 - 3~ 5.6 1 20 2.5
SMP003
M 460 - 3~ 2.8
2.25 3 6.6
2 20 1.5
U 208 - 1~N 18 1 40 6
D 230 - 1~N 16.3 1 40 6
W 208 - 3~ 10.4 1 20 2.5
K 230 - 3~ 9.4 1 20 2.5
M 460 - 3~ 4.7 2 20 1.5
SMP005
N 575 - 3~ 3.8
3.75 5 11
2 20 1.5
W 208 - 3~ 16.7 1 40 6
K 230 - 3~ 15.1 2 60 6
M 460 - 3~ 7.5 1 20 2.5
SMP008
N 575 - 3~ 6
6 8 17.6
1 20 2.5
U 208 - 1~N 31.4 1 60 16
SMP009 D 230 - 1~N 29.3 6.52 9 20 1 60 10
W 208 - 3~ 20.8 1 40 6
K 230 - 3~ 18.8 1 40 6
M 460 - 3~ 9.4 1 20 2.5
SMP010
N 575 - 3~ 7.5
7.5 10 22
1 20 2.5
W 208 - 3~ 31.2 1 60 16
K 230 - 3~ 28.2 1 60 10
M 460 - 3~ 14.1 1 20 4
SMP015
N 575 - 3~ 11.3
11.25 15 33
1 20 4
W 208 - 3~ 52 1 300 25
K 230 - 3~ 47.1 1 300 25
M 460 - 3~ 23.5 1 300 10
SMP025
N 575 - 3~ 18.8
18.75 25 55
1 300 6
W 208 - 3~ 72.9 1 500 35
K 230 - 3~ 65.9 1 500 35
M 460 - 3~ 32.9 1 500 16
SMP035
N 575 - 3~ 26.4
26.25 35 77
1 300 10
W 208 - 3~ 93.68 1 500 70
K 230 - 3~ 84.72 1 500 70
M 460 - 3~ 42.4 1 500 16
SMP045
N 575 - 3~ 33.9
33.75 45 99
1 500 16
M 460 - 3~ 61.19 1 300 35
SMP065 N 575 - 3~ 48.95 48.75 65 143 1 300 35
NOTE: Tolerance allowed on main voltage = -15%, +10%

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Control wiring
The STEAMaster+ control system allows up to two sensors to
be connected, as well as various safety devices, remote on/off,
alarm and serial communications.
Generally, the control sensor or humidistat (HT) is located in the
room or return air duct. In the case where the STEAMaster+
uses a direct discharge blower unit, this is the only control
needed. In ducts or air handlers, a high limit humidistat or
sensor is usually added to act as a safety (CR), as well as an
air flow proving device. The remote terminal HumiVisor (MT)
may be added.
Remote Supervisor / Serial
Communications:
This is a standard RS485
serial connection. It is
recommended to keep wiring under 3,200
feet. Request SATS’s communications
documentation for additional information
on this option.
Control wiring is made directly to the
control board terminals:
1. terminal block G (dehumidification
contact);
2. terminal block H (alarm contact);
3. terminal block K (on/off, manual drain
switch);
4. terminal block I (control signals);
5. terminal block J (to remote terminal or
supervisory system);
6. dip-switch for selecting TA RATE.
For On/Off Operation:
Connect any simple humidistat, high-limits, air flow
switch, and remote contacts in series from terminals
7I to 8I.
Circuits must be completed from 4I to 5I by a jumper
and from 7I to 8I for the unit to operate. Use
jumpers if devices are not connected.
Parameter A0 must be set to 0.

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&PC-301
AIRFLOW
HC-201
HI-LIMIT
+G
out H
M
M
out H
+G
ASWH10000
ASDH10000
COM
SIG
12 Vdc
24 Vdc
COM
SIG
ParameterA0 must be set to 4. ParameterA2 must be set to 0.
Alarm Output:
TheHterminals allows connection to an on-board SPDT alarm relay that provides
No and NC contacts for remote indication of alarms.
Dehumidify Output:
Dehumidifycontacts are also provided which can be used tocontrol adehumidifier
fromthe humidifier control system (stand-alone modulating mode only). The
contact is rated for 250 Vac, 8Amp resistive and 2Amp inductive loads.
For Modulating Operation with External Controller:
Connectany external controller (0-1 Vdc, 0-10 Vdc
Parameter A0 must be set to 1.
Parameter A2 must be set per the OUT signal from the
regulator:
• voltage: 0 to 1 Vdc; 0 to 10 Vdc; 2 to 10 Vdc;
• current: 0 to 20 mA; 4 to 20 mA.
NOTE:Safetiesarehigh-limithumidistat,air flow
switch,and/orexternalenable.
For Stand-Alone Modulating Operation:
Connect a high limit sensor and control sensor per the
diagramatright.
Parameter A0 must be set to 2 if no high limit sensor, 3
if a high limit sensor is used.
Parameter A2 must be set per the OUT signal from the
sensor:
• voltage: 0 to 1 Vdc; 0 to 10 Vdc; 2 to 10 Vdc;
• current: 0 to 20 mA; 4 to 20 mA.
Terminal4I (+(G)) =12Vdc
Terminals 2I & 6I (M) = common
ForSteamBaths(TurkishBaths):
In this case a temperature sensor is used to control the
humidifier. Connectsensors perthe diagramsbelow.
SIGNAL
COMMON

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ASWH / ASDH – ASDH / ASDC Wall – Duct Temperature/Humidity Sensors
Model Description
Humidity (0-1 VDC or 4-20 mADC)
ASWH100000 Wall Humidity sensor (replaces SHWOOP)
ASDH100000 Duct Humidity sensor (replaces SSDOMH00/1)
Temperature & Humidity (NTC temp, 0-1 VDC or 4-20 mADC humidity)
ASWC111000 Wall Temp/hum sensor (replaces SWNTCTH0/1 & STHONTC0/1)
ASWC110000 Wall Temp/hum sensor (replaces STHOAP)
Temperature & Humidity (0-1 VDC or 4-20 Madc temp & humidity)
ASDC111000 Duct temp/hum sensor (replaces SDNTCTH0/1)
ASDC110000 Duct temp/hum sensor (replaces SSDOMHT0/1)
Temperature: NTC thermistor, 10 Kohm at 25°C (77°F)
(ASWC/ASDC only)
Accuracy: +- 0.25°C from 0 to 50°C (32 to 122°F)
Humidity: Thin film capacitor
Linear 0-1 Vdc or 4-20 mAdc from 10 to 90%RH
Accuracy: +- 3%RH from 20 to 90%RH
calibrated at 55%RH and 25°C (77°F)
+- 5%RH above 90%RH and below 20%RH
Response time: 60 seconds
Power: 12 to 24 Vac/dc or +12 to –12 Vdc
Housing: Wall: ABS with glassfiber fill
Certifications: Calibrated to NIST traceable
humidity/temperature standard, CE Approved

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HC-101 and HC-201 Wall and Duct Humidistats
Mounting the HC-101 room humidistat: Mount the HC-101
humidistat to an inside wall or post in the area to be humidified.
Position it so that no drafts from registers or outlets are blowing
on it. Be sure that it is not placed over a device that could gener-
ate heat or vapor ie: stove, machinery, cleaning vat. The unit has
three wire leads, Orange, Brown and Red. Use the Orange and
Brown leads for control operation. Use the Orange and Red leads
for hi-limit operation.
Mounting the HC-201 duct humidistat: Cut a
hole in the side of the duct and mount the HC-201 humidistat to the duct, using the screws provided, at least 6 feet
down stream of any live steam or mist. The unit has three wire leads, Orange, Brown and Red. Use the Orange and
Brown leads for hi-limit operation.
Wiring Diagram
TABLE 1. SPECIFICATIONS
TABLE 2. MAXIMUM ELECTRICAL RATINGS
Part
No.
Type Scale
Range
%RH
Diff.
%RH
Operating
Limits
°F (°C)
Shipping
& Storage
°F (°C)
Connection Cover Dimensions
In. (mm)
HC-101 Wall 10 to 90 5 40 to 125
(4 to 2)
-40 to 140
(-40 to 60)
6" (150 mm)
color coded
leads
Beige
plastic
4-3/8 x 2-7/8 x 1-5/8
(111 x 73 x 41)
HC-201 Duct 15 to 95 5 40 to 125
(4 to 2)
-40 to 140
(-40 to 60)
Coded
screw
terminals
Metal 4-3/4 x 6-1/2 x 2-1/4
(121 x 165 x 57)
Part No. AC Volt
50/60 Hz
FLA LRA Resistive
Amps
Pilot Duty
VA
24 - - 8 60
120 7.2 43.2 8 345
HC-101
HC-201
240 3.6 21.6 8 345
Brown (N.O.)
Red (N.C.)
Brown makes on Drop in R.H.
drop in humidity
Orange
Common

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PC-301 Air Proving Switch
Mounting the PC-301 air flow switch:
Mount the airflow switch in the supply or return duct using the
screws supplied. Mount the device so that the diaphragm is in a
vertical position as shown at right.
If the airflow switch is to be mounted on the return duct (vacuum),
then mount it in a vertical position by the small plate. Drill a 7/16"
hole in the side of the duct and connect the supplied tubing to
the low pressure tap on the airflow switch and then run it through
the drilled hole in the duct. Put no more than 2" of tubing into the
duct. Caulk around the tubing where it enters the duct. The high
pressure tap is left open to atmosphere.
If the airflow switch is to be mounted to the supply duct (pres-
sure), then simply drill a 7/16 hole in the side of the duct, apply caulking to the large plate, and mount the device
with the large plate to the duct and the high pressure tap/tubing mated the hole. The low pressure tap is left open
toatmosphere.
MOUNTINGDIAGRAMS
Vac Full Load
Amps Locked Rotor Amps Pilot Duty (VA) Non- Inductive
Amps
24V - - 60 10
120V 6.25 37.5 300 10
240V 3.1 18.6 300 10
277V 2.7 16.2 300 10
N.C.
Common Increase
Pressure
N.O. makes on increase N.O.
inpressure.
TABLE1.MAXIMUMELECTRICALSWITCHRATINGS
WIRINGDIAGRAM

(06/06)
STEAMaster+ SERIES
Installation, Operation & Maintenance Manual
20
Start-Up
IMPORTANT WARNINGS:
1. Before starting, check that the humidifier is in perfect condition, that there are no water leaks and that the
electrical parts are dry;
2. Do not connect power if the humidifier is damaged or even partially wet!
When installation is completed, flush the supply pipe for around 30 minutes by piping water directly into
the drain, without sending it into the humidifier; this will eliminate any scale or residues that may cause foam
when boiling.
NOTE: For humidifiers with control H only, the same function can be performed automatically after starting the
appliance.
Startup Checklist
Before starting the humidifier, the following should be checked:
_____ Water is connected, the line has been flushed, and external valves are open.
_____ Drain is connected, run to an open drain, and has a trap under the unit.
_____ Electricity is connected in accordance with instructions, local codes and data labels in the unit.
_____ The power fuses are installed and intact.
_____ All control wiring is done and tested.
_____ Airflow switch is wired to open on air flow loss.
_____ Hi-limit humidistat is wired to open on humidity rise above set point.
_____ Unit wires have been checked to make sure they and all connectors are tight from shipping.
_____ The steam hose(s) are run correctly with no sags or kinks and sloped properly according to the manual.
_____ Condensate hoses are run correctly with no sags or kinks and sloped properly according to the manual.
NOTE: If you ordered a factory startup, this checklist will be required. Failure to complete this checklist may
result in additional charges.