Installation and Operation Guide

Installation and Operation Guide
Hot Water on Demand
Installation and Operation Guide
ThermoBoost Series Digital Thermostatic
24kW
118 F
º
www.atmorusa.com
Table of Contents
DescriptionPage
Safety Guidelines...........................................................................................................................2
Technical Information......................................................................................................................3
Plumbing..................................................................................................................................... 4-5
Mounting.........................................................................................................................................5
Installation Procedure................................................................................................................. 6-8
Wiring.............................................................................................................................................9
Starting the system.......................................................................................................................10
Operation Guid.............................................................................................................................11
Care and Maintenance.................................................................................................................13
Troubleshooting............................................................................................................................14
1
Important Safety Guidelines
1.Safety Guidelines
Read this manual thoroughly before attempting to install the instant water heater.
Failure to follow the safety instructions in this manual may cause damage to the unit,
and could also result in property damage, personal injury, or loss of life.
Failure to comply with the safety, installation or operating instructions voids the
product warranty.
The product manufacturer and the product distributor will not be liable for any damages
or injury because of failure to comply with the installation and operating instructions
specified in this manual or because of improper use.
Never attempt to install, disassemble, inspect or repair, disassemble or service the water
heater without first shutting off all power to the unit by means of the circuit breaker on the
main electrical panel.
The water heater must be installed by a licensed electrician and in compliance with all
national, state, provincial and local electrical and building regulations.
Always contact your local authorized distributor for service.
2.Safety – Important Notes
•• Caution: for household and indoor use only. Do not immerse in water.
•• For supply connection use 4 awg or larger wires suitable for at least 90ºc (194°f).
•• The heater must be installed by professional technician and according to the installation
instructions.
•• The heater must be grounded.
•• The heater must be connected to a dedicated circuit breaker on the main electrical panel.
•• The plumbing installation must be completed before the electrical installation.
•• The plumbing installation requires metal pipes or reinforced hoses that can withstand
pressure up to 8 bar.
•• A pressure relief device (PRD) must be installed at the inlet of the water supply line.
•• To ensure proper operation, the water supply flow rate must be at least 0.5 gpm.
•• Do not install the heater where it may be subjected to direct sunlight, rain, splashing water,
or freezing temperatures.
•• This unit is intended for heating water only. Do not attempt to use the unit for heating any
other kind of liquid.
Before connect the product to public power network, please consult your local power supply
authority to ensure the power network meet above requirement.
SAVE THESE INSTRUCTIONS
2
Technical Information
Electrical Specifications
ThermoBoost
24 kw
3
24,000
24 kW
240 V
3 x 40 A
3 x double-pole
100 A
3 x 8 AWG
Heating elements
Watts
Kilowatts
Voltage
Circuit Breaker Amperage
Breaker/Relay
Total Connection Load
Cable Size (minimum)
Plumbing Specifications
Minimum water flow to activate unit
Working pressure
Tested pressure
Water connections
0.5 gpm
0.5–10 bar (7–145 psi)
20 bar (290 psi)
3/4" NPT
Flow Rate
Flow Rate (gpm)
Temperature Rise
Δt (°F)
ThermoBoost
24 kw
2
2.2
2.5
3
3.6
4.5
81
74
63
54
45
36
Physical Dimensions
Height
13 3/8 in.
(340 mm)
3
Width
17 3/8 in.
(440 mm)
Depth
5 1/4 in.
(135 mm)
Weight
17 lbs
(7.7 kg)
Plumbing
01
The plumbing installation
must be completed before
the electrical installation.
03
05
06
08
02
A pressure reduction device (PRD) must
be installed on the heater’s incoming
water supply line prior to installing the
unit. The maximum recommended
operating water pressure is 8 bar.
Residential plumbing systems with
unstable pressure or pressure above 5
bar require the application of a pressure
stabilizer valve, set to 4–5 bar.
Copper water pipes are recommended for
use within three feet of the unit’s water inlet
and outlet. Other types of piping can be used
provided that are rated for high temperature
applications.
If installing the heater on an upper floor or in
an attic, be sure installation is in compliance
with local code. Install a drip pan with
drainage, or a leak detector and automatic
shutoff valve, to prevent damage in case of
a leak.
Before proceeding to electrical
installation, run water through the unit
for several minutes to flush out any air
bubbles from the water line.
04
The plumbing installation
requires pipes or reinforced
flexible hoses that can
withstand pressure up to
8 bar and that are rated
for high temperature
applications.
07
After plumbing installation
is completed, carefully
inspect all connections,
unions, and the pressure
relief device for leaks.
4
Mounting
01
The mounting surface
must be solid and secure.
03
Use mounting screws
that are at least 1 inch
in length.
Make sure the unit is
level prior to securing the
mounting screws.
06
07
5
02
04
The unit must be installed
in an upright position with
the water inlet and outlet
at the bottom.
05
Do not install the unit
above electrical boxes
or junctions.
The water heater must be installed in a manner that prevents
contact with combustible materials. Keep combustible materials at
least two feet away from the heater and hot water output pipe.
The water heater and hot water outlet pipe must be securely out of
the reach of children to prevent tampering with controls or contact
with an extremely hot pipe.
If installing the heater on an upper floor or in an attic, be sure
installation is in compliance with local code. Install a drip pan
with drainage, or a leak detector and automatic shutoff valve, to
prevent damage in case of a leak.
Assembly Instructions
01
03
Connect the Pressure Relief Device (PRD)
to the unit (Fig1)
Note: IMPORTANT – do not discard
this step. A PRD must be installed.
Disconnect the cable
from the PCB within
the unit. (Figure 3)
05
07
04
02
Remove the appliance
covers (Figure 2).
Mount the unit on the wall with 4 screws
at the marked points. (Figure 4)
Make sure the unit is horizontally level,
with water inlets and outlets at the
bottom. (Figure 5)
Connect the incoming water line
to the heater inlet (on right side),
and connect the outgoing water
line to the heater outlet.
Use a hose that can withstand
pressure up to 8 bar (Figure 5).
06
Run water through the
unit for one minute, and
make sure there are no
leaks
Make sure power to the unit is shut off by means of the dedicated
circuit breakers on the main electrical panel.
Run the power cable wires from the circuit breakers on the main
electrical panel to the water heater.
Connect the power cable to the terminal block within the unit.
Make sure the correct breaker size and wire gauge have been used.
Make sure all wire connections are tight and secure.
Make sure the unit is connected to a ground in accordance with
applicable codes. (Figure 6)
6
1
Washer
1
104 F
º
2
Pressure
relief
device
2
104 F
º
118 F
º
3
118 F
º
4
Water
Filter
24kw
Note: Neutral (N)
does not need to
be connected.
7
L1
L2
L1
L2
L1
L2
6
5
Assembly Instructions
08
Reconnect the cable to
the PCB within the unit.
(Figure 3)
09
Replace the front
cover onto the unit and
reattach it with 2 screws.
(Figure 2)
11
Restore power to the unit by means
of the dedicated circuit breakers on
the main electrical panel.
12
Do not install the heater where it may
be subject to direct sunlight, and
freezing temperatures.
13
Install the unit in a location that does
not require significant modifications
to plumbing and near the main
electrical panel.
10
Before turning on power
to the water heater,
open several hot water
faucets and allow water
to run through the unit for
several minutes to purge
any air from the heater
and water lines.
This step must be
performed before turning
on power to the heater.
Failure to perform
this step may result in
permanent damage to
the heating elements.
8
Electrical Diagram
2 Phase, 24kW
H3
H2
H1
TRIAC 3
TRIAC 2
TRIAC 1
T1
TERMINAL
BLOCK
L1
L2
L1
L2
L1
L2
T2
T3
GROUND
BAR
SNSR1
FLOW SENSOR
SNSR2
SNSR3
HEATER CONTROL
CTRL1
TEMP SENSOR TEMP SENSOR
HEATER
DISPLAY
T1, T2, T3 = Thermostat
H1, H2, H3 = Heating Element
SNSR2 = Inlet Temperature Sensor
SNSR3 = Outlet Temperature Sensor
9
Starting the system for the first time
01
Turn the temperature
knob clockwise to activate
the heater to display
outlet temperature.
02
With water running through
the unit, turn the knob to
adjust the temperature.
The recommended
temperature setting is
118°F (48°C).
A
03
The water heater
is now ready for
operation.
B
118 F
º
C
D
E
A
B
C
D
E
Temperature setting knob
Digital temperature display
Hot water outlet
(to be connected to the main hot water pipe)
Pressure relief device (PRD)
Cold water inlet
10
Operation Guide
Operating Instructions for the Home Owner
This electric water heater is designed to supply hot water for a house or apartment. Unlike a
conventional tank storage water heater, this unit is a tankless water heater that does not store hot
water. However, once you begin using the system, you will find it operates much like a conventional
tank system.
Tankless systems deliver hot water instantaneously on demand. Since a tankless system does not
waste energy continually heating water that is idly sitting and losing heat in a storage tank, it provides
greater energy efficiency than a conventional system.
With your new system, as soon as you turn on a hot water faucet, the demand for hot water is
detected, and high power heating elements are activated. Sensors continually monitor water flow
rate and incoming and outgoing temperature, and transmit data to the system controller, which
determines the exact amount of power required by heating elements to reach the set temperature.
It is important to keep in mind that all tankless water heaters are subject to a maximum flow rate. If
this flow rate is exceeded, the heater will not be capable of fully heating water.
Also keep in mind that conventional tank heaters are set to high temperatures to prevent running
out of hot water quickly, and thus a large amount of cold water needs to be mixed in to reach a
comfortable level for washing and showering. Since this unit heats water on demand, it is designed
to heat to a lower temperature. This means you only need to mix in a small amount of cold water,
or none at all.
Your hot water supply may also be affected by the incoming water temperature. During winter, if
incoming water temperature is very cold, you might not be able to run multiple hot water outlets at
the same time. However, you can run showers back-to-back without having to wait for water to heat.
Setting the Output Water Temperature
To set the temperature, first turn on a hot water faucet and allow water to run through the heater.
The digital display lights up and shows the current temperature setting.
To increase or lower the temperature setting, press the UP or DOWN button.
Temperature can be set to a level from 90°F to 122°F (30°C to 50°C).
A comfortable temperature for bathing and showering is between 98°F and 105°F (37°C to 41°C).
The recommended temperature setting is 118°F (48°C), which will deliver hot water for all household
needs at a maximum water flow rate. A higher temperature setting is not recommended, as it can
cause serious scalding injuries to children and elderly persons. Higher temperatures also produce
more scale buildup in water heating devices.
11
Operation Guide
Freezing Temperatures
If the ambient temperature falls below 32°F (0°C), protect the heater from potential damage. Shut
off power to the unit by means of the dedicated circuit breaker on the main electrical panel. Open
a faucet slightly to cause water to flow continuously through the device at a very low rate, without
heating. Restore power to the unit when temperature conditions allow.
If the water inside the heater freezes, it can cause damage that is not covered by warranty. If you
suspect water has frozen within the unit, do not turn it on until you are certain the frozen water has
melted and there are no leaks in the unit. It is recommended to contact a qualified electrician or the
manufacturer for service in this situation.
Leak Detected
If you detect a water leak from the water heater: Turn off the water supply at the shutoff valve on
the unit’s incoming water supply line, shut off power to the heater, and contact your local authorized
distributor for service.
Care and Maintenance
The water heater has no required maintenance procedures, but periodic inspections and tests are
recommended.
Remember that water heated to higher temperatures produces scale buildup much faster than at
lower temperatures.
Clean the filter once a half year.
Electrical connections should be tested once a year by a qualified technician.
Plumbing connections on the water heater should be inspected at least once a year for any signs of
damage or failure. If the water supply has a high level of mineralization (hard water), the water heater
should be inspected and descaled more frequently.
As a result of maintenance or a water stoppage, air may be introduced into the plumbing system.
Under such circumstances, follow the steps below to ensure the unit can safely resume operation.
Stopping and restarting the system due to servicing, water stoppage,
or other interruptions of operation
12
Care and Maintenance
01
03
05
13
Press the power switch to the OFF
position.
Shut off all power to the unit at the
circuit breaker on the main electrical
panel.
Open one or more hot water faucets and
allow water to run through the unit for
several minutes to purge any air from the
heater and water lines.
This step must be performed before
turning on power to the heater.
Failure to perform this step may cause
permanent damage to the heating
elements.
With water running through the unit, check
and reset the temperature if necessary.
The recommended temperature setting is
118°F (48°C).
02
04
Perform the maintenance
or servicing tasks.
Reconnect power to
the unit at the circuit
breaker on the main
electrical panel.
Press the power switch
to the ON position.
Troubleshooting
Before calling for service, check the troubleshooting list of common issues.
If you are unable to resolve a problem, contact your local authorized distributor.
PROBLEM ISSUE
POSSIBLE CAUSE
SOLUTION
Water not hot
enough.
The water flow rate exceeds
the heating capacity of the
heater.
Reduce the water flow rate at the
faucet or slightly close the shutoff
valve on the unit’s incoming water
supply line to reduce the water flow
rate.
Increase the temperature setting on
the unit.
Temperature setting is too
low.
Water pressure is less than
0.5 bar (7 psi).
Electrical malfunction.
Water too hot.
The water flow rate through
the heater is too slow.
Heater shuts off
during use.
Temperature setting is too
high.
Power outage or faulty
wiring.
Water stops
flowing.
Blockage in water pipes or
hoses.
Water temperature
varies from hot to
cold during use.
No hot water even
though the shutoff
valve on the unit’s
incoming water
supply line is fully
open.
No water supply.
Water pressure has dropped
below minimum level.
Power outage or faulty
wiring.
The flow rate needed to
activate the heating element
(0.5 gpm) has not been
reached.
Make sure the shutoff valve is fully
open and the water supply line is not
blocked.
Contact a qualified electrician or your
local authorized distributor for service.
Increase the flow rate at the water
outlet.
Switch to a lower temperature setting.
Check the power supply. Check the
circuit breaker.
If problem persists, contact a qualified
electrician or the manufacturer.
Make sure the main water line
valve is fully open and there are no
obstructions in the water supply line.
Increase the flow rate from the water
supply source.
Check the power supply. Check the
circuit breaker.
Increase the flow rate from the water
supply source.
Clean the filter screen on the unit’s
water inlet.
If you have an issue and need further assistance,
please call: 1-888-783-6082
14
LIMITED WARRANTY
The terms of this warranty is solely subject to the original owner and is at no time transferable. A
transfer of ownership will result in an immediate termination of this warranty. This warranty is valid
only if product is purchased from an authorized reseller.
Atmor warrants to the original owner that our instant water heaters will be free from defect in
workmanship and material for a period of TWO YEARS from the date of purchase, and free from
leakage for a period of SEVEN YEARS from the date of purchase. Should any part(s) prove to be
defective during this period, Atmor will be responsible for replacement of the defective part(s) only.
Atmor is not responsible for labor charges or any incidental or consequential expenses. Atmor’s
liability is limited to the cost of the product or $1,000.00, whichever is less. Atmor is not an insurer
and the original owner should purchase insurance to cover damage to property or belongings. The
original owner agrees to waive their right to jury trial or to participate in a class action. In addition,
the original owner agrees to waive subordination to the extent a loss is covered by insurance, so
that their insurance company cannot proceed with action against Atmor for recovery of any claims.
Furthermore, all claims must be arbitrated in the state of New Jersey.
Should the owner wish to return the water heater for repair, the owner must first secure a written
authorization from Atmor. The owner shall be required to show proof of purchase date and to pay
all transportation costs to return the defective part(s) or water heater for repair or replacement.
Warranty is void if: (i) water heater has been installed or used improperly; (ii) design has been altered
in any way; (iii) water heater has been installed and/or serviced by someone other than a licensed
electrician ; (iv) or if the water heater has been
installed or used in contradiction to installation
instructions, applicable laws and/or ordinances.
Distributed by:
PARAGON GROUP USA LLC
Englewood, NJ 07631
USA
Phone: 1-888-783-6082
Email: info@paragongroupusa.com
Web: www.atmorusa.com
P.N. 197382
A full and complete version of this warranty is
available on the online, www.atmorusa.com, or
upon request from an Atmor representative
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