amerec AK4.5 Steam Generator Instruction Manual

amerec AK4.5 Steam Generator

AK INSTALLATION AND SERVICE INSTRUCTIONS

These instructions apply to the AK4.5, AK6, AK7.5, AK9, AK11 and AK14

208V and 240V 1/3 Phase Models.
(Use 240V models for 400-415V~N3 installations) FOR USE WITH K2, K3, KT3, K4 and K5 CONTROLS

SAVE THESE INSTRUCTIONS

READ ALL INSTRUCTIONS CAREFULLY BEFORE INSTALLATION.
POST SAFETY “WARNING” LABEL OUTSIDE STEAMBATH. LABEL SHOULD BE POSTED ON OR ADJACENT TO DOOR TO STEAM ROOM IN COMMERCIAL INSTALLATIONS.

SECTION 1: GENERAL INFORMATION

Amerec steam generators are tested by Intertek-ETL Laboratory. The steam generators come assembled and ready for installation. Check that the size and rating of the generator is suitable for your application: refer to the AK Steam Room Sizing and Rough-in Guide (Amerec doc. 4211-37).

The AK steamers may be connected as a ganged system where one steamer controls one or two other steamers. Bath controls connect to the primary steamer and the primary steamer connects to the second steamer (and third steamer, if installed). This provides more power for large rooms and light commercial use. See appendix to this document for details.

We recommend choosing steamers which are closely matched in power. The highest kW steamer should be the primary unit. Each steamer should have its own automatic drain.
For commercial use, we recommend checking with your local inspectors to confirm the AK system is acceptable for your use. Many jurisdictions will require an ASME boiler for commercial use: AK steamers are not boilers.

Note: The AK steamer may be configured for single or three phase power during installation

IMPORTANT
An exhaust fan installed outside the steam room is strongly recommended to remove excess steam from the bathroom or shower area.

CAUTION
Electrical grounding is required on all AMEREC Steam bath Generators.
All electrical supplies should be disconnected when servicing generator.
All wiring must be installed by a licensed electrical contractor in accordance with local and national codes.
All plumbing must be installed by a licensed plumber in accordance with all applicable local and national codes.
AK series generators are for indoor use only.
AK series generators are not for space heating purposes.
Be certain that steam bath enclosures are properly sealed to avoid water damage from escaping steam. It is recommended that 100% silicone caulk be used to seal all pipes and fittings. Steam must be prevented from escaping into the wall cavity.
Never shut off the water to a steam generator that is in use.
Electric Shock Hazard – High voltage exists within this equipment. There are no user serviceable parts in this equipment.

Thank you for purchasing your new AMEREC AK steam generator.

If we can be of any assistance, please call our Technical Support at 1-800-363-0251 or 320-286-3500

FOR THE SAFETY OF YOU AND YOUR FAMILY OR CUSTOMERS, PLEASE READ THE FOLLOWING WARNINGS AND ALL INSTRUCTIONS BEFORE USING YOUR STEAMBATH.

POST “STEAMBATH INSTRUCTIONS” LABEL OUTSIDE STEAMBATH FOR SAFETY WARNINGS.

SAVE THIS MANUAL

FOR THE SAFETY OF YOU AND YOUR FAMILY OR CUSTOMERS, PLEASE READ THE
FOLLOWING WARNINGS AND ALL INSTRUCTIONS BEFORE USING YOUR STEAMBATH.
POST “STEAMBATH INSTRUCTIONS” LABEL OUTSIDE STEAMBATH FOR SAFETY WARNINGS.

WARNING

Electric Shock Hazard – High voltage exists within this equipment. Disconnect all electrical power before servicing the generator. All installation and service to this equipment should be performed by qualified licensed personnel in accordance with local and national codes. There are no user serviceable parts in this equipment.

Electrical grounding is required on all AMEREC steambath generators. The generator is designed for hookup with copper wire only, 75°C or better.

Wire the controls exactly as described. Do not connect any additional wiring or power supplies to the controls or their terminals in the generator.

Service only by authorized personnel!

All plumbing must be installed by a licensed plumber in accordance with all applicable local and national codes.

Install indoors only. Protect from freezing. Generator must be level side to side and end to end.

The pressure relief valve and generator drain must be installed in such a fashion that the risk of scalding is reduced to a minimum. Draining these outlets into the steam room may present a scald hazard and may damage materials used to construct the room.

Danger To reduce the risk of explosions, do not interconnect the steam lines!!
Caution The steam outlet carries hot vapor! A separate steam line is required for each steam outlet.

Do not connect a valve or shut-off in the steam line! Avoid traps and valleys in the steam line where water could collect and cause a steam blockage. The hot steam line must be insulated against user contact.

Do not install the steam head near a bench or where steam may spray or where condensation will drip on the user as this will present a scald hazard.

Be certain that steambath enclosures are properly sealed to avoid water damage from escaping steam. It is recommended that 100% silicone caulk be used to seal all pipes and fittings. Steam must be prevented from escaping into the wall cavity. Centering the steam pipe is critical in rooms made of plastic, acrylic, resin, fiberglass or similar materials. Allowing the steam pipe to touch materials not rated 240°F (115°C) or higher will result in damage to these materials.

POST “WARNING LABEL OUTSIDE STEAMBATH FOR SAFETY WARNINGS

IMPORTANT USER SAFETY INSTRUCTIONS

1. READ AND FOLLOW ALL INSTRUCTIONS.
   —SAVE THESE INSTRUCTIONS!

2. The steam bath is not intended for use by anyone (including children) with reduced physical, sensory or mental capabilities or who lack experience or knowledge, unless they have supervision or training on the use of the steam bath by a person responsible for their safety.

3. WARNING – To reduce the risk of injury, do not permit children to use this product unless they are closely supervised at all times. Ensure they do not play in the steam bath.

4. WARNING – To reduce the risk of injury:

   • The wet surfaces of steam enclosures may be slippery. Use care when entering or leaving.

   • The steam head is hot. Do not touch the steam head and avoid the steam near the steam head.

   • Prolonged use of the steam system can raise excessively the internal human body temperature and impair the body’s ability to regulate its internal temperature (hyperthermia). Limit your use of steam to 10 to 15 minutes until you are certain of your body’s reaction.

   • Excessive temperatures have a high potential for causing fetal damage during the early months of pregnancy. Pregnant or possibly pregnant women should consult a physician regarding correct exposure.

   • Obese persons and persons with a history of heart disease, low or high blood pressure, circulatory system problems, or diabetes should consult a physician before using a steam bath.

   • Persons using medication should consult a physician before using a steam bath since some medication may induce drowsiness while other medications may affect heart rate, blood pressure and circulation.

   • WARNING – Hyperthermia occurs when the internal temperature of the body reaches a level several degrees above the normal body temperature of 98.6°F (37°C). The symptoms of hyperthermia include an increase in the internal temperature of the body, dizziness, lethargy, drowsiness and fainting.
     The effects of hyperthermia include:

   • Failure to perceive heat:

   • Failure to recognize the need to exit the steam bath:

   • Unawareness of impending risk:

   • Fetal damage in pregnant women:

   • Physical inability to exit the steam bath: and

   • Unconsciousness.

5. WARNING – The use of alcohol, drugs or medication can greatly increase the risk of hyperthermia

SECTION 1: MOUNTING THE STEAM GENERATOR

The AMEREC steam generator can be hung on a wall or sit on its base. The best mounting location will satisfy all or most of the following:

WARNING: The generator will not operate properly, unless it is mounted level with the arrows pointed up

1. The generator should be installed in a dry, well ventilated area. Suggested locations are under a vanity, in a closet, attic, crawl space or basement. Do not mount outdoors.
2. If the generator will be in an area difficult to access, the water supply should be equipped with easily access water shut-off valve in case of emergency.
3. If the steam line is in an area where the temperature will be below 39°F (4°C) best results can be obtained by insulating the steam pipe. Do Not mount the generator in an area subject to freezing.
4. The generator must be mounted in a minimum 7 cubic feet (0,2 cubic meter) space.
5. The location must allow access for service! Provide clearance for plumbing and electrical service and for element removal. See Diagram 1.
6. The steam line should slope to allow condensation to drain. The mounting location should minimize the number of bends and elbows in the steam line
7. The mounting location should allow for a drain hook up.
8. The steam line should be less than 20ft (6 m) long; 10ft (3 m) is preferred. Steam lines over 20ft (6 m) long should be insulated.

WARNING

• There must be no dips or valleys in the steam line.
• Install the steam head so as to avoid potential user direct contact with the steam or where condensation may drip on the user as this may present a scald hazard.
• Do Not install any valves or other shut-off devices in the steam line!
• Do Not interconnect steam lines! A separate steam line is required for each generator!
• Do Not connect the drain line to the steam line or allow the drain empty into the steam room!
• Do Not connect the pressure relief valve into the steam line or vent it where someone nearby could be scalded! Do Not allow the relief valve to vent into the steam room!

WALL MOUNTING:
Remove the side cover. Note the location of the mounting holes on the back of the generator. The screws must set directly into studs or equivalent supports. Drill pilot holes on 14-1/2” (368 mm) centers and install the two #10 1½” screws, provided.
See at right.

• Carefully hang the generator on the two screws. Tighten the screws.
• The generator may be further secured with two screws mounted on the same 14-1/2” (368 mm) centers as shown.
• Replace the front cover with its four screws.

FLOOR MOUNTING:

• In general, the width of the unit allows it to sit on a shelf, across the ceiling joists or on a floor. The generator must be restrained from moving. Normally, the piping will provide adequate support. If not, additional support must be provided.
• All floor installed generators must provide for routine draining of the tank and for draining the safety valve’s outlet.

SECTION 2: WATER QUALITY REQUIREMENTS

The nature of a boiler or steam bath generator requires testing of the feedwater to avoid potential high concentrations of impurities which can cause a deposit or scale to form on the internal surfaces. This deposit or scale can interfere with the equipment’s proper operation and even cause premature boiler or generator failure. Concentration of impurities is generally controlled by treating the feedwater and or “blowing down” the generator or boiler when it is not heating. The “blow down” process involves removing a portion of the tank water with high solid concentration and replacing it with makeup water.

This is particularly important in areas with high calcium levels and other water quality problems. Calcium build-up can cause poor steamer performance and damage the heating elements!
Be especially careful to prevent foaming in the steamer’s water! Foaming water will affect the water level measuring systems in steamers and boilers, causing operation problems and possibly leading to early element failures!

To ensure proper operation, the water supply should be tested prior to operating the equipment. There are several treatment processes which can be used if you have a problem with hard water. A local reliable water treatment company can recommend the appropriate treatment if required. The recommended feedwater quality is listed on the next page.

Recommended Feedwater Quality

• Hardness 10 – 30 ppm – (0.5 – 1.75 gpg)
• T-Alkalinity 150 – 700 ppm – (8.75 – 40.8 gpg)
• Silica Range 15 – 25 ppm – (1.28 – 1.45 gpg)
• PH (strength of alkalinity) 10.5 — 11.5

IMPORTANT!
Regular maintenance will help your steamer work properly for a long time. Check for leaks, loose or damaged wires, signs of corrosion and calcium build up in the tank on the level probe.

SECTION 3: PLUMBING INSTRUCTIONS

All plumbing shall be installed by a licensed plumber and conform with local & national codes.

Materials Needed:

• 3/8NPT, 1/2NPT and 3/4NPT unions: recommended to allow easy disconnect of steamer for servicing
• 3/8″ copper pipe and 3/8” male NPT adapter for the water supply to the generator.
• 3/8″ water supply shut-off valve.
• 3/8″ supply valve housing and filter (optional depending on local water conditions).
• 1/2″ copper pipe and (2) 1/2″ male NPT adapters for the steam line between the generator and the steam room outlet.
• 3/4″ copper pipe and 3/4″ male NPT adapter for the tank drain.
• 3/4″ copper pipe, fittings, and a union for the Pressure Relief Safety Valve drain.
• Tube 100% silicone caulk.
• Pipe compound suitable for drinking water use at more than 212°F (100°C).

1. INSTALL WATER LINE Connect a cold water line to the generators water valve. The valve input is 3/8” NPT. A shut-off valve should be placed in the line for each generator to allow easier servicing later, if needed, and for emergency shut-off. Make sure the shut-off is open, providing water to the generator before first turning the on.
   IMPORTANT

2. Water pressure required: 20-100 psi (138-690 kPa)

3. If the generator is mounted in a place difficult for the homeowner to access, the water supply shut-off valve should be located where it can be quickly accessed in an emergency.

4. Do not use a saddle valve or saddle fitting for the water shut-off valve.

5. Flush water supply line before final hookup.

6. INSTALL STEAM LINE

   • At the generator: Install a 1/2″ male NPT sweat adapter directly into the tank. Install a 1/2″ union in the steam line to allow easy disconnection for later servicing. Note: There must be no valves, shut offs or restrictions in the steam line!
   • Run the 1/2″ copper steam line from the generator to the steam room. Refer to SECTION 1: MOUNTING THE STEAM GENERATOR and Diagrams 3a and 3b.
   • The steam line must slope to allow condensation to drain into the tank or room.
   • There must be no dips in the steam line. Low areas may collect condensation and cause faulty operation or cause hot water to spit into the room.
   • The steam line should enter the steam room 18” (460 mm) above the floor or at least 12” (305 mm) above a tub rim or ledge. The steam line outlet should be at least 6” (150 mm) from other steam heads to either side and 12” (305 mm) from walls or other surfaces to either side. See Diagrams 4, 5 and 6.

Note: See Diagram 6 for a typical installation. Additional steam heads may be added to any installation to reduce steam noise or to provide more steam dispersion around a large room. For large AK14 steamers, we recommend using 2 steam heads to reduce the noise level while steaming.

Note: if steam vents are too close to other surfaces, the steam may be cooled and the surfaces damaged.

• At the steam room: Drill/prepare a 1-3/8” (35 mm) hole for the steam line entry. Center the 1/2″ copper steam pipe in the hole. See Diagram 4.
  • Terminate the steam line with a 1/2″ NPT male adapter.
  • Stub the line out into the room 3/8” (9,5 mm) from the finished surface.
  • Secure the steam line to a structural member.

INSTALL STEAM HEAD INSULATOR: Fill in gap (using 100%Silicone caulk between steam pipe and finished wall surface at point of entry (see Diagram 4). Apply silicone caulk to the finished wall side of the steam head insulator (see Diagram 5) and screw on hand tight until it is flush with the wall with the opening pointing down. If a hand tight fit does not align with the opening pointing down, use Teflon tape on the steam line threads to adjust the fit.

INSTALL STEAM HEAD: Slide the steam head on until it rests firmly against the finished wall. Tighten the hex head screw underneath the steam head to secure it in place with the Allen wrench provided. The steam head should be level with its fragrance reservoir at the top. See Diagrams 4 and 6.

IMPORTANT
All fixture holes must be sealed with 100% silicon caulk to avoid moisture damage within walls. Check all of the standard fixtures in the steam room.

INSTALL PRESSURE RELIEF SAFETY VALVE: Install the pressure relief valve into its port on the generator.
Install the safety valve within 6” (150) mm of the generator. Run a 3/4″ copper line from the valve to a gravity flow drain. The pressure relief valve outlet must drain in accordance with local and national codes.

AUTODRAIN All generators must have a drain valve installed to allow draining the tank for cleaning and maintenance. A manual ball valve is supplied. An electronic ball valve is available in the ADK Autodrain option. When installed, Autodrain automatically rinses and empties the steam tank approximately 25 minutes after a steam bath stops. This cleans the tank to reduce problems caused by poor water quality and ensures every steam bath starts with clean, fresh water. Contact Amerec Technical Support for more information. Support@Amerec.com or 320-286-3500 or at 1-800-363-0251 INSTALL DRAIN VALVE: Install 3/4″ NPT pipe nipple directly into the tank as shown in Diagram 7. Install a 3/4″ ball valve or an Autodrain on the nipple then add another nipple to the outlet of the valve. Add a union to the outlet nipple to allow easy disconnect Diagrams 7 and 8 show the optional Autodrain valve section during servicing. Run a 3/4″ copper line from the union to a gravity flow drain. The drain must be connected in accordance with local and national codes.

IMPORTANT
All drain lines must run downhill, away from the steam generator! Also see Diagram 3

• Do not run the drain uphill.
• Do not drain the safety valve into the steam line!
• Do not drain the safety valve into the steam room! Draining the tank into the steam room may present a scald hazard or damage the materials used to construct the steam room.
• Do not drain into the steam room!

SECTION 4: WIRING INSTRUCTIONS

ALSO SEE ELECTRICAL INFORMATION CHART AND WIRING DIAGRAMS

1. ELECTRICAL ROUGH-IN:
   Size wire for the generator as required by local or national codes. See the electrical information on page13 for further information. Use copper wire only. Leave 4 ft (1,2 m) of slack wire at generator location for finish hookup. Connect the generator to a dedicated circuit breaker. A GFI device is usually not required by safety agencies. One may be installed if required by local codes or the owner. A GFI device will tend to nuisance trip due to heater element aging.

   • Route the copper supply wire with appropriate strain relief through the hole marked POWER ENTRY.
   • Connect the supply wires to the power terminal block as indicated on the wire diagram for your voltage and phase. This may require moving factory installed jumper. Do not change the steamer’s internal jumpers or wiring. Only the supply wiring side of the terminal blocks require configuration by the installer.
   • Connect the Earth wire to the copper Earth ground lug.
   • Cover the supply wires inside the steamer with a protective mesh or similar material to protect them from water valve heating.

2. ELECTRICAL INFORMATION The AK steamers are available in 2 basic versions, one for 208V (intended for 208VAC single and three phase for North American use) and 240V (intended for all other installations. The 240V models are rated at 240VAC and may be used on 208 to 240V single phase Line-to-Line or 208 to 240V~N (Line-to-Neutral) or 208V to 240V three phase Delta without Neutral or for Y-connected three phase 380 to 415V~N3.

All Units are factory wired for single phase installation. The installer may change the input to three phase or three phase + Neutral during initial installation (see the wiring diagrams on page 18-19).

The National Electrical Code (NEC) limits a steamer’s current to 48 Amps so, in some cases, two separate power supplies are required: AK11 & AK14 208V single phase and AK14 240V single phase require this method

See page 19 for Mains Wiring Details. Note: jumpers shown are supplied with the steamer.

Electrical Information

4500

| ****

60

| ****

90

| ****

1.70

| ****

2.55

240
415~N3
**AK6| 208| **

6000

| ****

80

| ****

150

| ****

2.27

| ****

4.25

240
415~N3
**AK7.5| 208| 7510| **

100

| ****

200

| ****

2.83

| ****

5.66

240| 7500
415~N3
**AK9| 208| **

9000

| ****

150

| ****

300

| ****

4.25

| ****

8.50

240
415~N3
AK11| 208| 11250| ****

200

| ****

400

| ****

5.66

| ****

11.30

240| 11000
415~N3
**AK14| 208| 13750| **

350

| ****

550

| ****

9.91

| ****

15.60

240| 14000
415~N3

Notes:

• All steamers must be on a dedicated branch circuit!
• Use only copper wire rated 600V~ and 75°C minimum
• All models require Earth ground
• All line voltage must be more than 195V~ while the steamer is heating
• Steamers must be connected to a means for disconnecting all supply voltages
• All AK14 and 208V AK11 single phase require two Mains supplies
• We recommend ceilings height be 8 ft (2,4m) max. Higher ceilings may cause sitting area to be uncomfortably cool.

• 240V models may be used at 208 to 240V. Operating on voltages lower than 240V will result in reduced wattage. Contact Technical Support for further information.
• Single phase 240V models are designed for North American 240V line to line Mains voltages (without Neutral) or 240V~N international voltages.
• Three phase 240V models may be wired during installation for a 240V delta configuration or for a 415V~N3 Y-configuration. Neutral must be supplied for 415V!
• NEC Electrical code restrictions limit Mains current to 48A. Some single-phase models require two separate Mains circuits to remain below 48A by splitting the heating load

Also refer to the wiring diagrams on pages 19 and 20 for more information on connecting your steamer.

SECTION 5. K3 & KT3 BATH CONTROLS

1. TEMPERATURE SENSOR CABLE ROUGH-IN (low voltage)
   It is required that the sensor be mounted in the steam room, but not directly over the steam dispersion head or near the door. The sensor should be located in a wall 6” (150 mm) below the ceiling but no more than 7ft (2,1 m) above the floor. String the sensor cable from the sensor location through 1/2:” (12 mm) holes in the wall studs or ceiling joists to the generator location. Drill a clean 7/8: (22 mm) hole through the steam room wall at the sensor location. Leave 12” (305 mm) of slack at the sensor location. See Diagram 9.
   Note: Do not staple through or damage cable. Use factory supplied cables only.
   For use with a K2 and K3 controls only! INSTALL THE TEMPERATURE SENSOR ASSEMBLY
   inside the steam room. A 7/8” (22 mm) hole should already be in the steam room wall with the cable ready.
   Make sure the sensor is not directly over the steam outlet head or near the door. The sensor should be located in a wall 6” (150 mm) below the ceiling but no more than 7ft
   (2,1 m) above the floor. Carefully connect the sensor cable to the sensor. The cable end should slide into place and lock.
   Run a light bead of silicone around the back surface of the sensor and slide it into the wall with the metal sensor tube pointed down. Tape the sensor to the wall until the silicone has set-up.

2. K2, K3, KT3, K4, K5 ROUGH-IN (See Diagram 10)
   The low voltage controls can be mounted up to 25ft (7,6 m) from the steam generator. All controls may be mounted either inside or outside the steam room except the KT3 must be mounted inside the steam room so it’s built in temperature sensor will function. String the 25ft (7,6 m) cable from the control location through 1/2” (13mm) holes in the wall studs or ceiling joists to the generator.
   Note: Do not staple through or otherwise damage cable. Use factory supplied cables only.
   Optional for tile rooms: a rough-in box may be installed at the desired control mounting location. A mounting plate with proper diameter hole and instructions is available. The plate mounts to a single switch/outlet box and the tiles should be finished over the plate and up to the hole edges to leave the control’s mounting hole clear.

INSTALL K2, K3, KT3, or K4 GENERATOR CONTROL
The low voltage controls can be mounted directly to a finished wall either inside or outside the steam room except. the low voltage KT3 control must be mounted inside the steam room. The K2, K3, KT3, and K4 controls have a short tube on the back to help locate the control and to protect the cable end. All of these controls connect to the steam generator’s circuit board through Amerec’s CAT5 cable.

Use a 1-3/8” (35 mm) hole saw, to drill a hole in the finished wall where the control is to be mounted (the control cable should already be roughed-in to this location). This must be inside the room for KT3 controls. Plug the cable end into the jack in the back of the control

Run a bead of 100% silicon caulk around the tube on the back of the control. Make sure there is enough to fill any grout lines and make sure the silicone is far enough from the edges to remain hidden after mounting to the wall.

Make sure the cable is firmly connected to the control then insert the control’s tube into the mounting hole and firmly press the control against the wall. Level the control and tape it in place (painter’s tape generally works well), then leave until the silicone is cured.

Route the generator end of the control cable through a knockout in the end of the generator and secure it using the strain relief provided. Plug the control cable into its socket on the steam generators circuit board (see diagram below).

Note: for steam bath temperature control, a K3 and a wall mounted sensor or a KT3 (with built in sensor) must be installed. Only one KT3 may be installed. You may combine two K3s or a K3 with a KT3. Note: The K2 and K3 controls provide bath temperature and run time control and they require a temperature sensor. The K4 is an on/off control used to start and stop the bath but they do not have temperature control. When using only a K4, turn the bath on when it is too cool and, if the bath becomes too hot, turn the bath off.

OPTIONAL SECONDARY CONTROL: It may be useful to have a control outside the steam room and another control inside the room. As an option, a second A K3 or K4 may be used as a second control with a K2 or a K4 may be used with a K3. You cannot have two K2 controls connected at the same time.

INSTALL K5 GENERATOR CONTROL:
The K5 low voltage control can be mounted directly to a finished wall either inside or outside the steam room.

The K5 does not control the temperature in the steam room.

Use a 1-3/8” (35 mm) hole saw to drill a hole in the finished steam room wall where the control is to be mounted (the control cable should already be roughed-in to this location).

Locate the control cable, pull it out through the mounting hole and connect it to the terminal block in the back of the control board, inside the housing. Note your wire colors and positions, you will need to wire the cable to the steamer circuit board using the same connections. We recommend using white to position 1, red to 2, black to 3 and green to 4.

Run a bead of 100% silicon caulk around the tube on the back of the control. Make sure there is enough to fill any grout lines and make sure the silicone is far enough from the edges to remain hidden after mounting to the wall.

Make sure the cable is firmly connected to the control then insert the control’s tube into the mounting hole and firmly press the control against the wall. Level the control and tape it in place (painter’s tape generally works well), then leave until the silicone is cured.

Route the generator end of the control cable through a knockout in the end of the generator and secure it using the strain relief provided. Wire the control cable to the terminal block on the steam generators circuit board (see diagram below).

SECTION 6. CONTROL OPTIONS

1. SELECT STEAMBATH RUN TIME (K2, K3 and KT3 use only)
   For installations with K2, K3 or KT3 controls, the temperature display can be set for a maximum bath time adjustable up to 60 minutes or up to 24 hours. Set the circuit board jumper as shown below. The jumper is located at the right edge of the board just above the AK IN jack.

2. 3. SELECT TEMPERATURE DISPLAY (K2, K3 and KT3 use only)
      For installations with K2, K3 or KT3 controls, the temperature display can be set to Fahrenheit (°F) or Celsius (°C). Set the circuit board jumper as shown above. The jumper is located at the right edge of the board just above the AK IN jack.

SECTION 7. INITIAL START

1. Assure power and water are on. Press the control’s ON/OFF switch. The control should light then the water valve should turn on to fill the steamer. While filling, check for leaks.
2. After the tank has filled to a safe level, the heating elements will turn on. Allow about 10 minutes for the steam to appear in the steam room.
3. Once the steam is visible, use the control to turn the bath off. The steam should stop within a couple minutes and the water valve should turn off. The control should not be lit.
4. Press the ON/OFF switch again. The control should light.
5. Within one minute the unit should again produce steam. It should call for water once every two minutes or more depending on its power rating. It is normal for the flow of steam out the steam head to slow for up to 10 seconds each time the unit calls for water.
6. The unit will shut down automatically in 30 minutes if a K4 or K5 control is used, or up to 60 minutes if the K2, K3 or KT3 control is used (depending on its TIME setting). When the time runs out the steam will stop and there should not be any water flow. The control should not be lit.

APPENDIX: AK SYSTEM INSTALLATION

AMEREC STEAMBATH GENERATORS
FOR USE WITH STEAM SYSTEMS INCORPORATING ONE AK PRIMARY STEAM GENERATOR AND ONE OR TWO AK SECONDARY STEAM GENERATOR(S)

These instructions apply to 9014 series Amerec Steamers AK4.5, AK6, AK7.5, AK9, AK11 and AK14

Save these instructions! Read all instructions carefully before installation.

These instructions supplement the AK steamer installation instructions, Amerec document number 4211-1552

SECTION 1: GENERAL INFORMATION
Amerec Steam Generators are listed by ETL. The steamers come assembled and ready for installation. Check that the size and rating of the steamers are suitable for your application; refer to Steam Room Construction and Generator Sizing Guide (Amerec document 4211-37).

Amerec AK Steam Systems consist of one AK steamer acting as a “primary” steamer which may control one or two other AK steamers. The sole purpose of ganging steamers is to increase the volume of steam generated without using multiple controls. The primary steamer controls the secondary steamer(s) through an Amerec control cable. Cables are available from Amerec.

All controls must connect only to the primary steamer!

IMPORTANT
An exhaust fan installed outside the steam room is strongly recommended to remove excess steam from the bathroom or shower area.

SECTION 2: SELECT MOUNTING LOCATION
The Amerec Steam Generator can be hung on a wall or set on it’s base. The best mounting location will satisfy all or most of the following conditions:

1. The steam line should slope to allow condensation to drain into the steam room.
2. The steam line should be less than 20 ft (6m) long; 10 ft (3m) is preferred. Steam lines over 20 ft (6m) long should be insulated.
3. The mounting location should minimize the number of bends and elbows in the steam line.
4.  The steam line should enter the room 18” (460 mm) above the floor or at least 12” (305 mm)above a tub rim or ledge.

WARNING

• Electrical grounding is required on all Steam Generators.
• All electrical supplies should be disconnected when servicing a Steam Generator.
• All wiring must be installed by a licensed electrical contractor in accordance with local and national codes.
• All plumbing must be installed by a licensed plumber in accordance with all applicable local and national codes.
• Steamers are for indoor use only.
• Steamers are not for space-heating purposes.
• Be certain that steam bath enclosures are properly sealed to avoid water damage from escaping steam. It is recommended that 100% silicone caulk be used to seal all pipes and fittings.
• Steam must be prevented from escaping into the wall cavity.
• Never shut off the water to an appliance that is in use.
• Electric Shock Hazard
• High Voltage exists within this equipment.
• There are no user serviceable parts in this equipment.

WARNING
REDUCE THE RISK OF OVERHEA TING AND SCALDING

1. Exit immediately if uncomfortable, dizzy or sleepy. Staying too long in a heated area is capable of causing overheating.

2. Supervise children at all times .

3. Check with a doctor be fore use if pregnant, diabetic , in poor health or under medical car e.

4. Breathing heated air in conjunction with consumption of alcohol, drugs or medication is capable of causing unconsciousness.
   CAUTION! Do not contact steam head . St ay at least 12″ away REDUCE THE RISK OF SLIPPING AND F ALL INJU RY
   Use care when entering or exiting the steam room, floor ma y be slippery. 05-21-07
   NOTE : For additional safety instructions, see owner’s manual .
   WARNING
   Do not put a shut-off valve in the steam line!
   The line must be unrestricted from the steamer into the steam room !To reduce the risk of explosion, do not interconnect steam outlets!

   • Do not mount outdoors.
   • Protect from freezing.
   • Unit must be located so as to allow access for service.
   • The steam steamer will not operate properly unless it is mounted level with the arrows pointed up.
   • A separate line must be provided or each steam outlet.
   • Avoid traps and valleys where water could collect and cause a steam blockage.|
   • The hot steam must be insulated against user contact. Install the steam head so as to avoid potential user contact.
   • Do not install the steam head near benches or where condensation will drip on the user or puddle as this will present a scald hazard.
   • The pressure relief valve must be installed in manner that reduces the risk of scalding.
   • Do Not drain the pressure valve or steamer into the steam room!
   • Draining the pressure relief valve into the steam room may present a scald hazard!

IMPORTANT
Before deciding on a mounting location, please read through these installation instructions completely and take a careful look at al of the diagrams.
An exhaust fan installed outside the steam room is strongly recommended in order to remove excess steam from the steam bath or shower area
It is strongly recommended that no exhaust fan be installed inside the steam room. Doing so will result in a loss of heat and steam through the exhaust fan and port.
Insulate all steam lines and drain lines within the enclosed space.
Each steamer must be provided with at least six (6) inches for wiring access at the control wiring end.
Each steamer must be provided with at least fifteen (15) inches clearance at the pipe end.
There should be at least thirty-six (36) inches in front of the louvered cover at each steamer for service access.

5. No steam head shall be more than 30 inches (760 mm) above the floor.

6. The steam outlet should be located to avoid potential user contact.

7. The steamers should be installed in a dry, well ventilated area. The space provided should be at least:
   7 cu ft (0,2 m3) for one steamer or 17 cu ft (0,5 m3)for two steamers or 27 cu ft (0,8 m3) for three.
   Suggested locations are under a vanity or in a closet, attic, crawl space or basement. Note: The steamer must be in an area protected from freezing.

8. The secondary steamers should be installed within a 25 ft (7,6 m) cable length of the primary steamer and the secondary steamer(s) should be within a 25 ft (7,6 m) cable length of the control installation.
   Note: System cables and longer control cables are available; contact Technical Support at 1-320-286-3500 or 1-800-363-0251 or support@amerec.com for assistance. The installation should provide clearance for service and element removal. See diagram 1.

9. The mounting location should allow for a drain hookup. There should be no more than three 90° bends and 10 ft (3m) of pipe between any steamer’s drain outlet and its drain valve inlet. See diagram 4.

10. Refer to the mounting instructions in Amerec AK installation instructions document 4211-1552 for details regarding mounting individual steamers.

Refer to the following diagrams for some suggested systems (and some not allowable steam piping).

DIAGRAM 5: TYPICAL STEAM LINES

IMPORTANT

• Input water pressure must be 20-100 psi (138-689 kPa)
• If the generators are mounted in a place difficult for the home owner to access, the water supply shut-off valve should be located where it can be quickly accessed in an emergency.
• Do not use a saddle valve or saddle fitting for the water shut-off valve.
• Flush water supply line before final hookup.

All plumbing shall be installed by a licensed plumber and conform with local and national codes.

Refer to the plumbing instructions in the individual installation instructions document 4211-1552 for details regarding plumbing of the individual steamers in your system.

INSTALL THE PRESSURE RELIEF VALVE
Each steamer must have its own pressure safety valve, 10psi (69 kPa). Connect the input of the pressure relief valve into its port on the steamer. The valve must be within 6” (150 mm) of the steam tank. Run a 3/4” copper pipe from the valve to an appropriate drain.
Do not connect the valve’s outlet to the generator’s drain line! Do not connect the valve’s outlet to the steam line!

IMPORTANT
The steam pipe entry into the steam room and the steam head must be caulked to avoid damage caused by steam leakage into the wall.
Centering the steam pipe is critical through walls made of plastic, acrylic, resin, fiberglass, or similar materials. Allowing the pipe to touch materials not rated for 212°F (100°C) or higher will result in damage to these materials.
If the steam line is in an area where the temperature will be below 40°F (4°C) or if the line is more than 20 feet (6 m) long, insulate the steam line for best results.

SECTION 5: WIRING INSTRUCTIONS

1. ELECTRICAL ROUGH-IN
   Use correct size and type of power wires and circuit breakers to meet electrical codes. Leave 4 feet (1,2 m) of slack wire at generator location to finish hookup. Connect each generator to a dedicated circuit breaker.

2. ELECTRICAL FINISH
   At the generator, route the copper supply wire with an appropriate strain relief through the hole marked POWER ENTRY. Connect the supply wires to the power terminal block. Refer to the wiring diagrams to determine your connection points and the necessary jumper connection. Connections can be varied to use either single phase or 3 phase or 3 phase +Neutral. Connect the earth ground to the ground lug (green screw).
   Notes:

   • Two power circuits are required for 208V AK11s and for 208V and 240V AK14s.
   • Supply voltage must be 200V or higher. 240V models may be used with available voltages to 240V (and 380V-415V~3N).
   • Use copper power wire only! All wire is to be UL Listed, 300V 75°C minimum unless otherwise specified.
   • A GFI device is not required by UL or NEC. One may be installed if required by local codes or the owner.
     A GFI device will tend to nuisance trip due to heater element aging.

3. CONNECT STEAMERS TOGETHER
   Connect a control cable from the Primary steamer’s G1 or G2 jack to the secondary steamer’s AK IN jack. Repeat for the third steamer, if installed. Note: We recommend system steamers be of similar wattages and, if not the same, the largest wattage should be in the primary steamer. See diagram below .

4. SET OPTION JUMPERS
   Set jumpers in the Primary steamer as instructed in the single steamer instructions. Secondary steamers should have their jumpers placed on only one pin (see diagram at right).

5. CONNECT CONTROLS
   Connect controls only to the Primary steamer. Refer to the individual steamer instructions for requirements.

SECTION 6: OPERATIONAL TEST After controls and slave generators are

connected

After connecting the control, temperature sensor and secondary steamer(s) to the Primary generator:

1. Assure power and water are on.
2. Press the control’s ON/OFF switch. The control’s display should light-up. (see control instructions included with control kit)
3. Allow 10 minutes for the steam to start. The time to see steam start will vary depending on each generator’s power rating.
4. Once the steam starts, press the ON/OFF switch. The steam should stop; there shouldn’t be any water flow.
5. Press the ON/OFF switch.
6. Within one minute the units should again produce steam. The generators should call for water once every two minutes or more depending on their power rating. It’s normal for the flow of steam out the steam head to slow for up to 10 seconds each time a unit calls for water.
7. The units will shut down automatically in 30 minutes (or the time set using a K2, K3 or KT3 control). When the time runs out the steam will stop and there should not be any water flow.

THE SYSTEM IS NOW READY FOR OPERATION.

Technical Support 575 Cokato St E Cokato, MN 55321
Phone 320-286-3500
1-800-363-0251
email: support@amerec.com

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