Helo IS 201 Series User manual

INSTALLATION AND OPERATING INSTRUCTIONS
710-0143 Custom IS Installation Manual with Low EMR
07/18/16 Rev 02
Page 1
WARNING
SECTION 1: GENERAL INFORMATION
The system is ETL approved for permanent installations and electrical
connections. All wiring must be performed in accordance with national
and local codes. See Diagram 2 for wire and room size requirements.
These heaters are wall mounted.
Do not take a sauna if using
alcohol, drugs or
medications.
Pregnant women or persons
with poor health should
consult their physician
before using any sauna.
Caution fire hazard: Do not
use the sauna room for
drying clothes, bathing suits,
etc. Do not hang towels
above heater. If any
darkening of the wall
around the heater is noticed
discontinue sauna use
immediately.
Inspect sauna regularly for
required maintenance to
heater, control and benches.
Replace wood surfaces
which show any signs of
deterioration.
The heater gets hot during
operation and should not be
touched or burns may result.
Minors should be adequately
supervised whenever near a
hot or warming sauna.
Infrared Sauna Series Models
IS 201, IS 301, IS 401, and IS 601 with
"SaunaLogic IS" Control Panel and CB PK-5
Box (here after referenced as SaunaLogic IS and CB PK Box)
Read all instructions carefully before installation. Please
leave all instructions and warranty with the owner.
WARNING
Prolonged exposure to elevated temperatures is capable of inducing
hyperthermia. Hyperthermia occurs when the internal temperature of
the body reaches several degrees above the normal body temperature of
98.6°F. The symptoms of hyperthermia include an increase in the
normal temperature of the body, dizziness, lethargy, drowsiness, and
fainting. The effects of the hyperthermia include failure to perceive
heat, failure to recognize the need to exit the room, unawareness of
impending hazard, fetal damage in pregnant women, physical inability
to exit the room and unconsciousness.
WARNING
The use of alcohol, drugs, or medication is capable of greatly
increasing the risk of fatal hyperthermia.

INSTALLATION AND OPERATING INSTRUCTIONS
710-0143 Custom IS Installation Manual with Low EMR
07/18/16 Rev 02
Page 2
A
1"
A
46 3/4"
1"
731/2"
2"
C
5"
2"
B
5"
18" 10"
max
18"
2"
CB PK
Box
Temperature Sensor
IR
Emitters
DIAGRAM 1
MINIMUM DISTANCE TO COMBUSTIBLE MATERIAL
Recheck your distances from the heater to
combustible materials to be sure you have the
proper minimum distances.
DIAGRAM 2
OBSERVING MINIMUM DISTANCES IS
REQUIRED TO REDUCE FIRE HAZARD
*Sauna Heater
Optional
Equipment
Sauna Heater
* Denotes an optional traditional sauna heater may be added to the
system. Refer to Installation and Operation manual for installation
questions.
All installation and service to this equipment should be
performed by qualified licensed personnel in accordance with
local and national codes.
Floor
Area
Ceiling
Height
Volume
Cu.Ft.
Ceiling
Height
Volume
Cu.Ft.
Power Supply
to CB PK-5
CB PK-5 to
IR Heating
Panels
CB PK-5 to
Tradional
Heater
IS-201 1.6 3.0 Junior 3.0 12 sq. ft. 73 1/2" 100 96" 150 1 240 6.5 2 #12AWG+GR 2 #14AWG+GR 2 #12AWG+GR
IS-301 2.0 4.5 Viki 4.5 16 sq. ft. 73 1/2" 135 96" 200 1 240 8.3 2 #10AWG+GR 2 #14AWG+GR 2 #10AWG+GR
IS-401 2.3 6.0 Viki 6.0 21 sq. ft. 73 1/2" 175 96" 300 1 240 9.6 2 #10AWG+GR 2 #14AWG+GR 2 #10AWG+GR
IS-601 3.0 8.0 Viki 8.0 31 sq. ft. 73 1/2" 250 96" 425 1 240 12.3 2 #8AWG+GR 2 #14AWG+GR 2 #8AWG+GR
WIRE SIZE
* Optional
Traditional
Heater
IR
AMPS
MODEL IR
kW
MINIMUM ROOM MAXIMUM ROOM
PHASE VAC
Sauna
kW
NOTE: A GFCI (Ground Fault Interrupt Circuit) device is not required by NEC. A GFCI may be installed if
required by local codes but will nuisance trip during use of the product.
- CAUTION: Loose wire connections can cause heat damage to wires, terminal blocks and other components
and may void the warranty.
MODEL IR-325-240 IR-160-240 IR-110-240
IS-201 4 1 1
IS-301 5 1 2
IS-401 6 1 2
IS-601 8 1 2
IR Heating Panel Quantities

INSTALLATION AND OPERATING INSTRUCTIONS
710-0143 Custom IS Installation Manual with Low EMR
07/18/16 Rev 02
Page 3
DIAGRAM 3
DIAGRAM 4 DIAGRAM 5
Back of sensor
Insert screwdriver tip here to unsnap
sensor cover from sensor.
Note vertical orientation of cover before
removing.
SaunaLogic IS Control
Typical IS Installation with a traditional sauna heater
Refer to Diagram 1 for minimum spacing requirements.
Minimum spacing CB PK BOX
Optional
Equipment
Upper Bench
Lower Bench
CB PK Box can be outside of the sauna room or installed inside sauna room.
18"
2"
Locate top of sensor 2"
from ceiling and directly
above the traditional
sauna heater if installed.
(If infrared only, install
the sensor above IR heater
panel).
48"
3/4
17 "
1/4
18 "
84"

INSTALLATION AND OPERATING INSTRUCTIONS
710-0143 Custom IS Installation Manual with Low EMR
07/18/16 Rev 02
Page 4
DIAGRAM 6
Recessed Mounted IR Heating Assembly Information
Surface Mounted IR Heating Assembly Information
IR-325-240-R IR-160-240-R
IR-110-240-R
ROUGH OPENING
ROUGH OPENING
40"
28 1/4" 27"
40"
16" 14 3/4"
39 3/8"
40"
12 3/8"
11 1/2"
ROUGH OPENING
IR-325-240-S IR-160-240-S
IR-110-240-S
10 3/4"
38 3/8"
38 3/8"
14 3/8"
26 5/8"
38 3/8"
39 3/8"
39 3/8"

INSTALLATION AND OPERATING INSTRUCTIONS
710-0143 Custom IS Installation Manual with Low EMR
07/18/16 Rev 02
Page 5
GNDT1T2
GNDL1 L2
T1 T2
1 2
Interior
Lights
Exterior
Lights
Color
Therapy
Sensor
CB PK-5 Box
Back Element
Junior Heater
240V / 1 Phase Connection
K6 K1
K5 K4
Power Input
K2 K3
F3
SaunaLogic IS
Control Panel
4124-063 Rev A
IR1 IR2
To next IR Emitter
Notes:
Quantity of IR Emitters are based on
IS System.
Traditional sauna heater is optional.
Field Wiring
Factory Wiring
F1
5A
F2
5A
15
Amp
F4
15
Amp
IR Emitters
(Optional
Equipment)
1517-30-02
JT1
3
Color Lamp
JT2 JT1
Exter_Light
Inter_Light
GND GND
IR Emitter Quantities
IS-201
IR 325-240 IR 160-240 IR 110-240
4 1 1
Front Element
IR Emitters
01/20/16
DIAGRAM 7
WIRING DIAGRAM: CONTROL AND HEATER MODELS
Junior 3.0 (1517-30-02) SaunaLogic IS and CB PK Box

INSTALLATION AND OPERATING INSTRUCTIONS
710-0143 Custom IS Installation Manual with Low EMR
07/18/16 Rev 02
Page 6
Back Element
Middle
Element
GNDT1T2
GNDL1 L2
T1 T2
1 2
Interior
Lights
Exterior
Lights
Color
Therapy
Sensor
CB PK-5 Box
Viki Heater
240V / 1 Phase Connection
K6 K1
K5 K4
Power Input
K2 K3
F3
SaunaLogic IS
Control Panel
4124-064 Rev A
IR1 IR2
To next IR Emitter
F1
5A
F2
5A
15
Amp
F4
15
Amp
IR Emitters
(Optional
Equipment)
JT1
3
Color Lamp
JT2 JT1
Exterior Light
Interior Light
GND GND
IR Emitters
1720-45-02
1720-60-02
1720-80-02
Front Element
IR Emitter Quantities
IS-301
IR 325-240 IR 160-240 IR 110-240
IS-401
IS-601
512
612
81 2
Notes:
Quantity of IR Emitters are based on
IS System.
Traditional sauna heater is optional.
Field Wiring
Factory Wiring
01/20/16
WIRING DIAGRAM: CONTROL AND HEATER MODELS Viki 4.5, 6.0 & 8.0
(1720-45-02,1720-60-02,1720-80-02) SaunaLogic IS and CB PK Box
DIAGRAM 7 CONT.

INSTALLATION AND OPERATING INSTRUCTIONS
710-0143 Custom IS Installation Manual with Low EMR
07/18/16 Rev 02
Page 7
WARNING
SECTION 2: INSTALLATION SUMMARY AND TIPS
ELECTRICAL: ROUGH IN:
Step 1: Is a traditional sauna heater being installed in room?
If yes, the traditional heater location must be chosen first. If the room is
over 78" and the heater is hung on the wall and the IR assembly can be
installed above the tradional sauna heater. There has to be 5" of
clearance above the traditional sauna heater and the bottom of the IR
assembly. See Diagram 1 for specific spacing requirements. If no,
proceed to step 2.
Step 2: What IS system should be installed in the room?
The system will determine how many IR emitters will be in the room.
See Diagram 7 for the quantities of IR emitters. Try to evenly space
the IR emitters in the room behind the benches. See Diagram 3 for IR
emitter size information.
Step 3: IR Panel Wire Installation
Pull 14-2 AWG wire w/ground BX cable from the CB PK Box to
closest IR emitter. Install a metal single gang junction box 24” below
the bottom of the estimated height of the IR heating panel. Daisy chain
the wire from the first IR emitter to the next junction box and continue
to loop and leave wires sticking out for each single gang box.
Step 4: Traditional Sauna Heater Wiring traditional sauna heater
(optional). Refer to Diagram 2 for the traditional sauna heater for wire
size or a 72" wire is provided with the sauna heater. Preinstall wire
from the CB PK box to the location of the bottom of the sauna heater.
A two conductor cable is provided with the sauna heater for the high
limit safety switch. Preinstall wire in the wall. The traditional sauna
system will not work if the wires and switch are not connected.
Step 5: Lighting Installation (Optional Equipment) SaunaLogic IS is
capable of operating ONLY a lighting package purchased with the
system. The lighting package consists of 3 color therapy lights, 2
interior lights, 3 exterior lights, and the cables to connect the light
assemblies to the CB PK box. The cables provided are 176" from CB
PK box to the first light fixture. Then the cable is 60" between the
fixtures. All cable lengths are similar depending on the number of
fixtures.
Predetermine light fixture locations in the ceiling based on cable
lengths and CB PK box location. Route the cable provided from the
desired light locations in the ceiling to the CB PK box before any
tongue and groove is applied.
Cut 2 3/4" holes in tongue and groove boards for light fixtures as the
tongue and groove is being applied. Ensure the lighting cables reach
the hole locations.
Refer to Diagram 1 for
minimum clearance of
ceiling above heater.
Fire sprinkler systems used
inside any sauna room
should be properly rated for
sauna room temperatures.
Do not spray water on
Infrared Emitters
Water use on Infrared
Emitters may cause damage
and will void warranty.
Do not install a shower in the
sauna room.
Electric Shock Hazard - High
voltage exists within this
equipment. There are no
user serviceable parts in this
equipment.
All installation and service to
this equipment should be
performed by qualified
licensed personnel in
accordance with local and
national codes.
Use only copper wire of the
size and type indicated in the
Heater Specification Chart
and the temperature rating
indicated on the heater
junction box.
All heaters and controls must
be grounded per NEC to
prevent electrical shock in
case of unit failure.
Electrical outlets or
receptacle must not be
installed in a sauna room.

INSTALLATION AND OPERATING INSTRUCTIONS
710-0143 Custom IS Installation Manual with Low EMR
07/18/16 Rev 02
Page 8
Locate top of sensor 2" from ceiling and directly above the IR-325-240 IR panel AND traditional sauna heater
if installed. (traditional sauna heater is optional equipment.)
Feed the 17 ft "low voltage" sensor wire from the sensor location to the CB PK box location. Sensor wire
must be routed completely separate (as per low voltage electrical wiring codes) from any wiring carrying over
50 volts. It may be necessary to drill holes to string the wire through the studs or ceiling joists.
Using a flat tip screwdriver, unsnap sensor cover from sensor. Mount sensor to a finished wall directly above
heater and two (2) inches down from ceiling using two (2) screws (provided) as shown in Diagrams 1, 3 & 5.
Connect wires to JT2 on the circuit board inside the CB PK box.
SECTION 3: TEMPERATURE SENSOR
SECTION 4: ROOM AND ELECTRICAL INSTALLATION
ROOM ROUGH IN FOR SURFACE MOUNT IR EMITTERS:
Build the frame the room with standard building materials and
framing design.
Install single gang outlets below the IR Emitters. Rough in all
lighting wires, IR emitters wires, Sensor wire, Control wires before
insulating the room and applying foil vapor barrier.
Tongue and groove the ceiling. While installing the tongue and
groove on the ceiling continue to cut in the light holes and install and
connect the lights as the ceiling is installed. Access will be difficult
after ceiling is completed.
Apply tongue and groove wood on the walls (vertical or horizontal
depending desires installation). Cut wood around the electrical
access boxes. Cut an electrical access behind the IR Emitter to feed
the wire from the emitter into the electrical box. (Pictures do not
show the cut out behind IR emitter.)
Remove the cover from Surface Mount IR Emitter by holding the
wire on the back of emitter and pull the cover away to the front. It
will release a mechanical lock. Install the wire from the IR emitter
into the wall and into the electrical box below. Install the extra wire
in the wall and then attach IR emitter panel to the wood wall with 6
screws (3 on each side).
Reinstall the cover by placing the top of cover over the IR panel and
pull down. It will catch two notches at the top of the wall and then
push the lower part of the cover against the IR panel and the cover
will “click” into place. The cover will be flush all the way around the
IR emitter for clean finished look.
Splice in the electrical panels into the electrical box and cover with
metal single gang blank plate.
Continue this process to complete the room.

INSTALLATION AND OPERATING INSTRUCTIONS
710-0143 Custom IS Installation Manual with Low EMR
07/18/16 Rev 02
Page 9
SECTION 4: ROOM AND ELECTRICAL INSTALLATION CONT.
ROOM ROUGH IN FOR RECESS MOUNT IR EMITTERS:
Build the frame the room with standard building materials and
framing design.
Install single gang outlets below the IR Emitters. Rough in all
lighting wires, IR emitters wires, Sensor wire, Control wires
before insulating the room and applying foil vapor barrier.
Tongue and groove the ceiling. While installing the tongue and
groove on the ceiling continue to cut in the light holes and install
and connect the lights as the ceiling is installed. Access will be
difficult after ceiling is completed.
Install 5/8” plywood on the walls. Cut the plywood around the
electrical access boxes. As the plywood is applied to the wall,
cut out the IR Emitter placement in the plywood The size of
openings are in Diagram 6.
Apply tongue and groove wood on the walls (vertical or
horizontal depending desires installation). Cut wood around the
electrical access boxes and the IR emitter openings.
Install the IR emitters in the openings and feed the wire in the
wall to the electric box below the panel. Install the extra wire in
the wall and pin nail the IR emitters to the tongue and groove
wall on the left and right side of panels. DO NOT pin nail in the
top or bottom of IR emitters.
Splice in the electrical panels into the electrical box and cover
with metal single gang blank plate.
Continue to install panels until the room is completed.

INSTALLATION AND OPERATING INSTRUCTIONS
710-0143 Custom IS Installation Manual with Low EMR
07/18/16 Rev 02
Page 10
SECTION 5: ELECTRICAL CONTROLS INSTALLATION
Electrical installation must be made by a licensed electrician in accordance with the National Electrical Code
and local regulations.
Remove the screws from the CB PK box to access the electrical connections. Secure CB PK box to the wall in
the sauna room according to Diagram 1. (4 screws provided in the box) Route the wires through the holes
provided on the bottom of the control box and connect the wires to the terminal block. To determine the
correct wire size, refer to Diagram 2. Use copper supply wire only, suitable for minimum 90 degrees C. The
heater must be grounded! See Diagram 6 for proper connections.
Refer to the Installation and Operation Manual for all electrical questions about the traditional sauna heater.
Connect low voltage cable from the SaunaLogic IS control to JT1 of the circuit board in the CB PK Box.
Connect sensor cable to JT2 of the circuit board in the CB PK Box. Connect the color therapy light cable to
Color Lamp of the circuit board in the CB PK Box. Connect the cable from Interior lights to the connector
labels Interior Lights. Connect the cable from exterior lights to the connector labels Exterior Lights.
Connect the traditional sauna heater high limit sensor cable to JT13 of the circuit board in the CB PK Box.
(optional equipment)
Surface Mount IR Emitter Installation
Remove the cover from the IR panels by pushing the front bottom of the panel through the cloth.
Install the wire harness from the IR emitters into the wall to the pre-installed single gang boxes. Connect all
wires in the electrical junction box appropriately. All IR emitters should be grounded.
Install the IR assembly to the tongue and groove wall with 6 wood screws provided with the kit. Ensure the
excess wire is pushed in the wall behind the IR emitter.
Clip the cover over the top of the heater and push the bottom of the cover against the mechanical clips.

INSTALLATION AND OPERATING INSTRUCTIONS
710-0143 Custom IS Installation Manual with Low EMR
07/18/16 Rev 02
Page 11
SECTION 6: SAUNALOGIC IS CONTROL OPERATION
OPERATING INSTRUCTIONS FOR IR EMITTERS .
Press the red POWER button once. The Infrared heaters will turn on and begin heating the room to current set
points. At the end of the selected time (60 minutes maximum), the control will turn itself off and the control
display will turn off. The infrared room temperature will be displayed on the control. The default settings for
Infrared temperature is preset to 120°F, the bath time is set to 60 minutes and 0 minute delay to start to heat.
These settings are adjustable (as described below) from 110° to 149°. Length of sauna can be set from 0 to 60
minutes. The time delay before start can be up to 23 hour and 59 minutes
SETTING THE DURATION AND TEMPERATURE
To set the sauna length of time, press the control POWER button to turn on the heater. Press the TIME "+" or
"-" buttons on the control to increase or decrease time for desired setting. The maximum of time is 60 minutes.
To set the temperature, press the control POWER button to turn on the heater. Press the TEMP "+" or "-"
buttons on the control to increase or decrease temperature for desired setting. The maximum temperature is
149°F (65°C).
Note: Typical bathing temperature is 115F to 125F displayed on the control. Starting ambient temperature
below 70F will cause the IR system to heat slower, which may result in less effective performance.
OPERATING INSTRUCTIONS FOR SAUNA HEATER
Press the Traditional Sauna button on the SaunaLogic IS and the default settings for the temperature is preset
to 176°F, the bath time is set to 60 minutes and 0 minute delay to start to heat. These settings are adjustable
(as described below) from 125° to 194°. Length of sauna can be set from 0 to 60 minutes. The time delay
before start can be up to 23 hour and 59 minutes.
SETTING THE DURATION AND TEMPERATURE
To set the sauna length of time, press the red POWER button to turn on the heater and press the
TRADITIONAL sauna button. Press the TIME "+" or "-" buttons on the SaunaLogic IS to increase or
decrease time for desired setting. The maximum of time is 60 minutes.
To set the temperature, press the control POWER button to turn on the heater. Press the TEMP "+" or "-"
buttons on the SaunaLogic IS to increase or decrease temperature for desired setting. The maximum
temperature is 194°F (90°C).
Note: Typical bathing temperature is 150F to 165F displayed on the control.
PRE-SETTING DELAYED START
With the electricity applied to the CB PK box, press the SaunaLogic IS POWER button once. The room
temperature will be displayed on the control. Press the “Pre-setting” button. Press the TIME "+" or "-"
buttons on the control to increase or decrease delay time for desired setting. The maximum of time is 23 hours
and 59 minutes. If no delay start is desired, set to 00:00 and press “Pre-Setting” button.
Note: The “ : ” will flash between the numbers in the time display when system is in the delayed start mode.

INSTALLATION AND OPERATING INSTRUCTIONS
710-0143 Custom IS Installation Manual with Low EMR
07/18/16 Rev 02
Page 12
Shower
Sauna (10 - 15 min.)
Shower or swim
Rest (10 - 15 min.)
Relax with juice or water
You liked it?
Do it once again and
you will feel great.
SECTION 7: HIGH LIMIT CONTROL (RESET BUTTON)
• When taking a sauna, allow time to relax completely.
• Remove clothing and jewelry...if required, wear a towel loosely.
• After 10 minutes or when perspiration begins, leave sauna and relax
in dressing area...follow with a cool shower.
• Cooling time should equal time spent in sauna. Enter sauna room
again and stay 5 or 10 minutes.
• Repeat the cycle 2 or 3 times; end with a brisk shower...rinse in cool
water.
• Dress when completely dry and perspiration has stopped.
• Do not smoke, exercise or drink alcoholic beverages in the sauna
room.
SECTION 8: HOW TO TAKE A SAUNA
The sauna systems have a built-in high limit control, which
automatically turns off the heater if the temperature inside in the sauna
room rises to an abnormally high level.
The control will display "HL" if the system overheats. To restart the
heater, let the room cool, then push the "On/Off" button on the control.
If the high limit continually shuts off the heater, contact a service
representative at 1-888-780-4427.
The sauna, like a bathroom, should be kept clean and odor free.
Towels or mats should always be used on benches and floor as
perspiration otherwise penetrates the soft wood.
Air out the sauna often by keeping the door and vents open when the
sauna is not in use. Saunas that are in daily use should be washed
down at least once a week to keep them clean and the air fresh.
Duckboard should be removed from the sauna, the sauna floor mopped
and dried in a conventional manner, and the duckboard thoroughly
scrubbed and dried before returning to the sauna room. The sauna
heater should be wiped down occasionally with a damp cloth to
remove lint and dust. The rocks should be removed once a year for
cleaning and small or crumbled rocks replaced.
To clean and remove perspiration stains, use soap or detergent in warm
water, best applied with a scrub brush. Badly soiled surfaces may
require sanding. Sand paper wrapped around a wooden block works
well.
Benches and supporting structure must be inspected annually for
potential deterioration due to age, dry rot or abuse. Any boards with
signs of deterioration should be replaced immediately to avoid possible
injury.
SECTION 9: MAINTENANCE

INSTALLATION AND OPERATING INSTRUCTIONS
710-0143 Custom IS Installation Manual with Low EMR
07/18/16 Rev 02
Page 13
WARNING
SECTION 10: WARNING PLACARDS
SECTION 11: ROOM CONSTRUCTION
For safety purpose sauna
door must open out and not
lock.
Never use a wood stain, seal
or preservative on the inside
of your sauna room.
Light fixtures get very hot
during operation. Locate
light fixture where it will not
be a burn hazard.
Two metal placards are included in the Installation Instruction Envelope
packaged with every Sauna Heater. The CAUTION placard must be
attached to the interior wall of the sauna room directly above the heater
where it is visible to the bather. The WARNING placard must be
attached to the door of the sauna room.
The "CAUTION" and
"WARNING" placards must
be mounted in accordance
with Section 10.
For safety and reliability, the following rules must be addressed.
- No permanent locking or latch system is to be used on the sauna door.
- Acceptable door fittings are: magnetic catches, friction catches,
spring or gravity loaded closures.
- The door must always open outwards.
- No shower may be installed in a sauna room.
- No electrical receptacle shall be installed inside the sauna room.
- The enclosed WARNING: Reduce the risk of overheating … warning
plate must be mounted on or alongside the door outside the sauna room
at about eye level.
- The enclosed CAUTION: Reduce the risk of fire … caution plate
must be mounted on the interior wall above the heater.
- If an intercom speaker is installed, it should be as close to the floor as
possible.
- Fire sprinkler systems installed inside any sauna room should be
properly rated for sauna room temperatures.
- Always mount the heaters according to these installation instructions
- Typical wall design, 2x4 studs, insulation, foil vapor barrier, and
tongue and groove boards. Refer to Diagrams 3 and 8.
SECTION 12: VENTILATION
VENTILATION In a private sauna, the air should be changed about 6
times an hour. This can be achieved by making a vent opening (fresh
air inlet) in the sauna wall directly below the heater. The air outlet
must be lower than the upper benches, as far as possible from the heater
and about two feet higher than the fresh air inlet vent, See Diagram 9. It
is recommended that ventilation openings meet the requirements of UL
Specification 875. The minimum opening should be determined using
one of the following formulas:
For R<31, V³9.3, For R³31, V³0.3R
where R = the floor area of the room in square feet and
V = the minimum vent size in square inches

INSTALLATION AND OPERATING INSTRUCTIONS
710-0143 Custom IS Installation Manual with Low EMR
07/18/16 Rev 02
Page 14
SECTION 14: TROUBLESHOOTING
If control displays "SN" it means no sensor is connected. Refer to Section 4 for sensor installation
information.
If control displays "HL" it means the high limit is open and the heater is too warm. Refer to Section 7 for high
limit information. There is one high limit for each system. Need to determine which system is operating to
know which high limit is alarming.
System won't start to heat, ensure the system is not in the delay mode. If ":"is flashing in the time display the
system is in the delay mode.
For troubleshooting or service questions call 1-888-780-4427 and ask to speak with service. Prior to calling,
please have the Model and Type number available. You may also e-mail at [email protected]
DIAGRAM 8
TYPICAL PRE-CUT WALL CONSTRUCTION
2x4" framing 1/2" wallboard
berglass insulation
1/2" wallboard
T&G soft wood
foil vapor barrier
DIAGRAM 9
Locate vent under
the top bench
VENTILATION