RELAX-A-MIST SG-9 User manual

Leisure Baths Ltd.
COMMERCIAL STEAM GENERATORS
INSTALLATION INSTRUCTIONS FOR SG SERIES
SG-9, SG-14, SG-18, SG-23, SG-27, SG-36
1. STEAM GENERATOR LOCATION
The RELAX-A-MIST steam generator and its
controls must be located in a dry environment
preferably 3 feet above the floor. The steam
generator is approximately a 3 foot cube and
there should be a minimum clearance of 30
inches on each side, the back, the top and at
the front. There should be no more than 25
feet of steam pipe per steam line between the
generator and the steam nozzles. The steam
generator must be accessible for service and
maintenance. There must be a drain close by
into which the steam generator can be drained
on a daily basis. Preferably, the steam
generator and its thermostat controls will be in
a mechanical room adjacent to the steam
room. Install the steam unit on the Relax-A-
Mist metal stand (purchased separately) Ask
dealer for details. The steam unit must be
level. There are four 1/2" bolts holding the
shipping boards to the bottom of the steam
generator. The bolts are to be used for
leveling purposes once the shipping boards
have been removed.
Note: Do not install the steam generator on the
shipping boards.
2. GENERAL The commercial Relax-A-Mist
steam generator is designed specifically to
heat and steam areas for steam bath
purposes. The controls are all supplied (built-
in where feasible), including a digital 7 day, 24
hour time clock to start the steam operation in
the morning and stop it at night. An automation
option is built-in to allow the operation of
remote switching to replace the time clock
operation. The generator is designed to
operate continuously, or intermittently, as heat
and steam are required by the steam room
thermostats. The steam room thermostats
single temperature sensor is connected by a
factory supplied 25 foot wire.
These thermostats control 2 steam room
temperatures. One thermostat is LOW or
standby temperature and the other is for HIGH
or operating temperature. The low
temperature cycle is activated by the time
clock switching the steam unit on for its daily
operation. The high temperature cycle is
activated by an air switch button mounted on
the factory supplied plate light assembly.
Locate this button plate assembly inside or
outside the steam room and close to the door.
When a person wishes to steam bath, they
push the button activating the steam cycle for
30 minutes and the light illuminating indicates
the cycle has started. The button also turns
the cycle and light off should a person end
their steam bathing before the 30 minute cycle
is completed.
There is a built-in drain/flush system that
operates when either the time clock or the
remote switch turns the steam operation off.
At the start of the drain/flush operation, the
flush valve introduces a burst of water to the
interior of the steam generator to cool the
boiling water. Then the automatic motorized
drain valve opens followed by six separate 14
second flushes over a 20 minute period.
This is necessary as the only substance that
leaves the generator during a steam operation
is pure steam and all of the dissolved solids
carried in with the water remain in the steam
generator. During a 10 hour operational day,
the dissolved solids from approximately 30 to
90 gallons of water (depending on the boiling
tank size) are left in the approximate 2-1/2
gallons of water in the steam generator. If this
residue is not drained on a daily basis, the
resulting mineral buildup may hamper the
steam unit operation and void the warranty.
Note: See "WATER SUPPLY" on page 2 and
“CAUTION 6" on page 5.
QUALITY STEAM BATH EQUIPMENT
RELAX MIST
A
TM

INSTALLATION INSTRUCTIONS FOR SG SERIES
SG-9, SG-14, SG-18, SG-23, SG-27, SG-36
Page 2
3. CONTROLS
All of the steam unit controls are a maximum 24
volts and are protected by 2amp. fuses located
on the electronic circuit board. The circuit board
and the terminals for connecting the external
controls are located in the left (low voltage) side
of the main electrical connection box. The
circuit board controls:
a. steam boiling tank water level.
b. one of the boiling tank low water cutoffs.
c. the main heating element relay contactors.
d. the drain flush system.
e. a timer for the HI TEMP operating
temperature air switch button.
f. use of either the time clock or remote switch.
The wiring connections will be described later.
4. WATER SUPPLY
The water supply connection to the steam
generator must be according to local codes.
The water supply line must be flushed to
eliminate any construction debris prior to
connecting to the steam generator.
SEE “CAUTION 9" on page 5.
Commercial Relax-A-Mist steam generators are
equipped with two fresh water systems; one for
the normal steam operation and one for the
drain flush system. There are two 1/2" solenoid
valves located on the back of the main electrical
connection box on the steam generator (one for
each system). These two valves each have a
1/2" copper pipe with a flared union stubbed
out. They can be connected together so a
single shutoff can be installed or each can have
its own shutoff.
The “steam operation” water supply valve is
connected to a 3/8" copper pipe which goes into
the top of the boiling tank (left of center). The
"drain flush" water supply valve is connected to
a 1/2" copper pipe with a trap, which goes into
the top center of the boiling tank, between the
steam pipes.
If not already in the water system, a "water
bumper" should be supplied and installed.
The water supply should be analyzed to
determine the presence of any minerals and/or
other impurities that could coat, corrode, or
impede the operation of the Relax-A-Mist water
boiling tank interior. If necessary, the water
must be treated to offset any adverse condition
which may arise, or the warranty may be null
and void. See GENERAL on page 1 and
“CAUTION 6" on page 5.
5 DRAIN VALVES, PIPING & FLUSH SYSTEM
There is a drain piping kit (with a union) that
connects to the steam generator pipe marked
“DRAIN”. The two drain valves supplied with
the commercial Relax-A-Mist are installed to/or
on this piping kit.
a. A 1" electric automatic drain valve that
opens at the end of each day.
b. A 3/4" manual drain valve (installed to loop
the electric valve - see illustration of drain
valve piping kit) for use when manual
draining is desired.
The boiler is drained by gravity alone, so the
drain system through the electric drain valve
must not be less than 1". The drain piping kit
discharge union should be piped directly to a
floor drain,(leave an air gap between drain pipe
and floor drain). The drain piping kit provides
for the pressure relief loop connection. See the
illustration on the Component Description page.
DRAIN VALVE ELECTRICAL CONNECTION
The drain valve is 24 Volts A.C., and is
connected to the terminal strips in the left side
of the electrical box on the steam unit:
a - Connect terminal #1 on the valve to
terminal #1 in the control box.
b - Connect terminal #2 on the valve to
terminal #2 in the control box.
c - Connect terminal #4 on the valve to
terminal #4 in the control box.
Note: See wiring diagram on the inside cover of
the low voltage connection box.

Page3
INSTALLATION INSTRUCTIONS FOR SG SERIES
SG-9, SG-14, SG-18, SG-23, SG-27, SG-36
6. STEAM PIPING & STEAM NOZZLES
See “CAUTION 1, 2 & 5" on page 5. The steam
nozzle piping should be roughed in 18" above the
finished floor of the steam room. Steam nozzles
must be located away from user pathways where
the steam will not burn anyone sitting on a bench
or where they would come in contact with the
steam. Care must be taken to AVOID A STEAM
TRAP.
Use each of the steam nozzles supplied, one per
steam pipe. For maximum efficiency, all steam
pipes must be:
a. secured or suspended.
b. of rigid copper.
c. insulated.
d. sloped so that no condensate will collect.
e. installed by the most direct or shortest route
using the fewest number of elbows, will in
most cases, maintain a lower pressure, less
than 1 lb. in the boiling tank, than will a
longer route with many elbows).
There is to be no restriction in the steam pipes
between the steam generator and the steam
nozzles that would in any way cause pressure to
build in the boiling tank. See “CAUTION 1, 2 & 3"
on page 5. ALL condensate MUST be able to
drain from ALL sections of the steam pipes at
ALL times. Warning steam nozzle is Hot!
There are two copper steam lines with unions
stubbed out of the top of the steam generator.
On each of the two steam lines supply and install
hard copper steam pipes (maximum 25 ft. per
pipe) to a steam nozzle on each pipe. Each of
the two steam pipes is to be terminated with a
single steam nozzle sized to the steam pipe. See
“CAUTIONS 2 & 3" on page 5. See “Figure 1"
below for model, steam pipe and steam nozzle
count and sizes. For other steam nozzle
configuration consult with Relax-A-Mist 1-800-
987-8326 or the warranty will be void.
Figure 1.
model steam pipes size
no. steam heads inches
SG-9 2 3/4”
SG-14 2 3/4”
SG-18 2 1”
SG-23 2 1 - 1/4”
SG-27 2 1 - 1/4”
SG-36 2 1 - 1/2”
7. THERMOSTATS
The electronic thermostats supplied with the
Relax-A-Mist are Johnson Controls models
A350 HI TEMP (operating temperature), S350
LO TEMP (standby temperature) and D350
digital readout. When plugged together, these
thermostats control 2 room temperatures with
one sensor. The readout D-350 displays the
room temperature or the set point, in real time.
During the room construction, there should be a
3/4 inch conduit (i.e. plastic) installed in the wall
to facilitate the installation of the room
temperature sensor. The conduit should enter
the room so the sensor will be positioned 5 feet
from the finished floor or at the shoulder height
of a person sitting at the highest seating level.
The acrylic temperature sensor guard, supplied
with the generator, must be installed in a
vertical position to encourage the passage of air
around the sensor. This makes it much easier
to accurately monitor the room temperature.
Mount the thermostat din rail and controls on a
wall next to the steam generator where they
can not be tampered with.
THERMOSTAT HOOKUP
The thermostats are to be electrically
connected to the sensor and to the steam
generator using #18 AWG LVT wire, or
equivalent, as follows:
Note: Connect the A-350, the S-350 and the
D-350 controls by plugging them
together on the din rail provided. Then
proceed with the wiring.
TEMPERATURE SENSOR TO CONTROL
i. Identify the "SEN" and the "COM"
terminals in the upper left side of the HI
TEMP model A350 (left) thermostat
control.
ii.Connect one wire from the room
temperature sensor to the “SEN”
terminal.
iii. Connect the 2nd wire from the room
temperature sensor to the “COM”
terminal.

Page 4
INSTALLATION INSTRUCTIONS FOR SG SERIES
SG-9, SG-14, SG-18, SG-23, SG-27, SG-36
STEAM UNIT THERMOSTAT TERMINALS
i. - Identify the HI TEMP and the LO TEMP
terminals in the low voltage control side of the
steam unit main electrical connection box.
ii. -Connect the two HI TEMP terminals in the low
voltage control box to the "COM" and "NO"
terminals in the bottom of the A350 thermostat
control.
iii. -Connect the two LO TEMP terminals in the low
voltage control box to the "COM" and "NO"
terminals in the bottom of the S350 (right)
thermostat control.
POWER SUPPLY TO A350 (LEFT) THERMOSTAT
i - Identify the "Thermostat 24 Volt" terminals in
the low voltage control side of the steam unit
main electrical connection box.
ii - Identify the "24V" and "COM" terminals in the
upper left side of the HI TEMP model A350
thermostat. The COM terminal will already
have one wire from the temperature sensor
connected.
iii - Connect the + (plus) terminal in the control box
to the 24V thermostat terminal.
iv - Connect the - (minus) terminal in the control
box to the COM thermostat terminal together
with the wire from the temperature sensor.
The thermostat temperatures have been pre-set at
the factory. The HI TEMP at 115oF, and the LO
TEMP at 90oF. The differential is preset at 1 degree.
8. AIR SWITCH
To facilitate the final installation of the air switch
actuator button, indicator light, and mounting
plate assembly, cut a diamond shaped hole (4
inches across the flats) in the wall at standard
switch height, just outside or inside the steam
room door. Install a conduit to give access to
this 4 inch diamond shaped hole for installation
of a 5/16 inch plastic air line hose and a #18
AWG 2 LVT wire for the indicator light.
When mounting the button and plate assembly
to anchors in the wall, care must be taken to
protect the wires attached to the back of the
LED indicator light, as they can be damaged by
careless handling. Care must also be taken not
to kink the air line hose.
i - Using the plastic tubing provided, connect
the sender button, (on the back) to the air switch
nipple located on the outer upper side of the
steam unit low voltage electrical box.
ii - At the “Indicator Lamp" terminals in the
steam unit low voltage control box, connect the
orange wire to the + (plus) terminal and the white
wire to the - (minus) terminal. The polarity must
be correct for the LED indicator to operate.
Note: Silicone may be used to seal around the Air
Switch assembly plate when mounting it to the wall.
9 ELECTRICAL SUPPLY Must be wired to
comply with local code. See “CAUTION 7" on page
5. According to most electrical codes, a disconnect
must be placed within easy reach or sight of the
steam generator. NOTE: Use Copper Wire Only
The heater elements installed in the SG series
Relax-A-Mist steam generators will be one of the
combinations listed in Figure 2, depending on the
combination that was ordered. Please check the
product label on your Relax-A-Mist generator to
ensure it is compatible with the electrical supply.
Connect the supply wires to terminals L1, L2 and
L3, (if provided) which are found in the right side of
the main electrical connection box (see the wiring
diagram in these instructions and on the inside of
the electrical connection box cover.)
Note: The dash ---- lines denote field hookup.
10. PRESSURE RELIEF The boiling tank
pressure relief is a 23 inch water column that must
be piped to an open drain (through the drain piping
kit). Fill the pressure relief loop with water when
installing, before startup and insert it into the drain
kit column. Install the pressure relief loop so there
is an air gap at the drain column to avoid siphoning
it dry. See “Component Description” diagram page.
11. OPTIONAL EQUIPMENT All Relax-A-Mist
model SG steam generators are equipped to accept
the installation of a metal stand, remote switching, a
scent pump and a no steam switch, (all purchased
separately).
Remote Switch A remote device, such as a
building computer may control the daily operation.
This switch must be capable of switching 3 Amps @
24 Volts AC. See “CAUTION 8” on page 5.

Page 5
INSTALLATION INSTRUCTIONS FOR SG SERIES
SG-9, SG-14, SG-18, SG-23, SG-27, SG-36
SCENT PUMP
A scent pump will automatically add a fragrance
to the steam room during the high temperature
bather cycle. The pump requires a separate 120
Volt 5 Amp electrical supply. The pump comes
complete with all hardware for installation.
It is important that only pure essential oils be used
with the Relax-A-Mist scent pump. Call 1-800-
987-8326 for details. Note: the pump Warranty
may be void if corrosive or alternate products are
used.
NO STEAM SWITCH
For temporary shut down purposes, a no steam
switch can interrupt steam from being produced.
Some examples of when this may be required are:
if the facility decides to have the steam room
cleaned during the daily operation, should a steam
patron require assistance in the steam room, or
should the facility not have patrons present that
day. Call 1-800-987-8326 for details.
` Figure 2
Electrical specifications of the Relax-A-Mist steam generators are:
MODEL SG-9 SG-14 SG-18 SG-23 SG-27 SG-36
WATTS 9,000 13,500 18,000 22,500 27,000 36,000
SINGLE PHASE
VOLTS 240 240 240 240 - -
208 208 208 208 - -
THREE PHASE
VOLTS 208 208 208 208 208 208
480 480 480 480 480 480
575 575 575 575 575 575
CAUTION CAUTION CAUTION CAUTION
1. Do not interconnect or manifold steam pipes, reduce in size or cause a restriction.
2. Use only the steam nozzles supplied, one steam nozzle per steam pipe.
3. The steam pipe(s) must not be restricted to - the equivalent of less than the inside diameter of
the steam nozzle(s). See Figure 1 for steam pipe and steam nozzle diameter.
4. Steam Nozzles must be located in an area where the steam will not discharge onto the users’
pathways and the steam will not burn anyone. Note: A steam guard may be required.
5. AVOID A STEAM TRAP. All condensate MUST be able to drain from all sections of the
steam pipe at all times.
6. Impure, mineralized, or other types of hard water that may hamper the operation of the steam
generator may VOID THE WARRANTY if not treated properly.
7. Check the electric service voltage and phase requirements of your Relax-A-Mist steam
generator to ensure your electrical supply is compatible. Use copper wire only.
8. A remote switch that is connected to the terminals in the low voltage side of the electrical
control box must be capable of handling 3 Amps at 24 volts AC.
9. Flush 5 gallons of water through the water supply line to remove construction debris before
completing the water connection to the steam generator.

Page 6
WARRANTY POLICY
For a period of one year from the date of installation, or 18 months from date of manufacture, which ever
comes first, all parts and assemblies are warranted as to workmanship and materials used in their
manufacture. There is no cosmetic warranty on installed parts or controls. Any Relax-A-Mist TM products
containing defective parts, if returned prepaid to an authorized Relax-A-Mist Service Depot within the one
year or 18 months time limit, will be repaired free of charge, F.O.B. the authorized Service Depot making
such repairs.
The Company will not be responsible for any breakdown, damage, or losses, direct or indirect, arising in
contract or in tort from any cause whatsoever, including failure to read the Relax-A-Mist installation
instructions specifically, careless handling, improper voltage supply, corrosion and/or electrolysis or a build-
up of minerals on the parts or assemblies for any reason or from any source; nor for transportation and/or
other charges incurred in the removal, replacement or repair of defective products or parts; and there are no
warranties or conditions expressed or implied or otherwise applicable, to the company's products except as
expressly stated herein.
FOR INFORMATION REGARDING WARRANTY OR INSTALLATION QUESTIONS PLEASE CALL 1-800-Y-U-STEAM
AUTHORIZED SERVICE DEPOTS
BRITISH COLUMBIA ALBERTA ALBERTA
LEISURE BATHS LTD. FRASER-BOND LTD. ALWAYS PLUMBING LTD.
6909 Antrim Avenue 9452 Almond Crescent S.E. 18150 - 102 Ave.
Burnaby, BC V5J 4M5 Calgary, AB T2J 1B6 Edmonton, AB T5S 1S7
TEL [phone] TEL [phone] TEL [phone]
or 1-800-Y-U-STEAM FAX [phone] FAX [phone]
(1-800-987-8326)
FAX [phone]
MANITOBA ONTARIO QUEBEC
BALCAEN & SONS LTD. ACCORD APPLIANCE INC. THOMAS & SCHMIDT
(T&S)
1392 Pembina Highway #17 - 750 Oakdale Rd. 2825 rue Sabourin
Winnipeg, MB R3T 2C1 North York, ON M3N 2Z4 Saint-Laurent, QC H4S 1M9
TEL [phone] TEL [phone] TEL [phone]
FAX [phone] FAX [phone] or 1-800-363-0708
FAX [phone]
For assistance phone Relax-A-Mist at 1-800-Y-U-STEAM (1-800-987-8326) or e-mail: [e-mail]
LEISURE BATHS LTD 6909 ANTRIM AVE BURNABY B.C. CANADA V5J 4M5 1-800-Y-U-STEAM 1-800-987-8326 www.relax-a-mist.com
QUALITY STEAM BATH EQUIPMENT
RELAX MIST
A
TM