STIEBEL ELTRON HydroShark 115NG User manual

OPERATION AND INSTALLATION
UTILISATION ET INSTALLATION
Non-Condensing Gas Micro-boiler
»HydroShark115NG
»HydroShark115LP
Conforms to ANSI Z21.10.3/CSA 4.3
Conforme à la norme ANSI Z21.10.3/CSA 4.3

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HydroShark 115 Gas Micro Boiler
Installation Manual and Owner’s Guide
If the information in these instructions is
not followed exactly, a fi re or explosion
may result causing property damage,
personal injury or death.
-Do not store or use gasoline or other fl ammable
vapors and liquids in the vicinity of this or any
other appliance.
-WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance
• Do not touch any electric switch, do not use
any phone in your building.
• Immediately call your gas supplier from a
neighbor’s phone. Follow the gas supplier’s
instructions.
• If you cannot reach your gas supplier, call the
fi re department.
-Installation and service must be performed by
a qualifi ed installer, service agency or the gas
supplier.
Models:
HydroShark 115NG
HydroShark 115LP
Featuring
• Effi ciency: 83 %
• Wall Hung
• Flow Activated: .75 GPM
• Copper Heat Exchanger
• Temperature Range: 99°-167° F*
• Freeze Protection
• Power Vent
• CAT III Stainless Steel Venting
*Max Water Temp of 167° F at 2.4 GPM
The HydroShark 115 Gas Micro Boiler
is a compact and powerful residential unit
with a versatile BTU modulating range.
Do not return. Damages or repairs call
800.805.5384

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CONTENTS
Installation Manual
SPECIFICATIONS..........................................................................................................4
INTRODUCTIONS..........................................................................................................5
SAFETY GUIDELINES...................................................................................................6
INSTALLATION...............................................................................................................7
General................................................................................................................7
Clearances...........................................................................................................9
Included accessories............................................................................................9
High-altitude installations....................................................................................10
Venting instructions.............................................................................................11
Gas supply and gas pipe sizing..........................................................................17
Water connections..............................................................................................19
Electrical connections.........................................................................................20
APPLICATIONS..................................................................................................22
INITIAL OPERATION..........................................................................................24
OWNER’S GUIDE
OPERATING SAFETY...................................................................................................26
NORMAL OPERATION.................................................................................................28
General..............................................................................................................28
Temperature Settings.........................................................................................29
Flow....................................................................................................................30
Freeze protection system...................................................................................30
Maintenance and service...................................................................................31
Unit draining and fi lter cleaning..........................................................................31
TROUBLESHOOTING..................................................................................................32
General...............................................................................................................32
Error codes.........................................................................................................34
COMPONENTS DIAGRAM...........................................................................................37
PARTS LIST...................................................................................................................39
OUTPUT TEMPERATURE CHART...............................................................................41

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Installation Manual
CONGRATULATIONS
Congratulations and thank you for choosing our micro boiler. Before use, we
recommend that you read through this installation manual carefully. Keep
this manual for future reference.
If you need an additional manual, contact the manufacturer or your local
distributor. When you call, please tell us the product name and the serial
number of your unit written on the rating plate of the boiler.

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SPECIFICATIONS
*18-25 PSI is recommended for maximum fl ow (Space Heating)
**The Manifold Pressure is the factory setting and generally should not need adjustment.
NOTE:
• Check the rating plate to ensure this product matches your specifi cations.
• The manufacture reserves the right to discontinue, or change at any time, specifi cations, or
designs without notice and without incurring obligation.
*When using boiler in-conjunction with HydroShark DHW Integrator Panel, system pressure may be much higher on your
domestic water side. Your space heating side should still reflect the recommended 18-25 PSI for system pressure.
Model HydroShark 115
Natural Gas Input
(OperaƟng Range)
Min: 19,500 Btu/h
Max: 140,000 Btu/h
Propane Input
(OperaƟng Range)
Gas ConnecƟon ¾” NPT
Min: 19,500 Btu/h
Max: 140,000 Btu/h
Water ConnecƟŽŶƐ ¾” NPT
Water Pressure 15 - 150 psi*
Natural Gas
Inlet Pressure
Propane
Min. 5.0” WC
Max. 10.5” WC
Inlet Pressure
Manifold
Pressure**
Min. 8.0” WC
Max. 14.0” WC
Natural 2.0” WC
Propane 2.5” WC
Weight 33 lbs.
Dimensions H20.5” x W13.8” x D6.7”
IgniƟon Electric IgniƟon
Supply
Electric
120 VAC / 60 Hz
ConsumpƟon
OperaƟon 73.1 W / 0.61 A
Standby 6.2 W / 0.05 A
Freeze-
ProtecƟon 111 W / 0.93 A

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INTRODUCTION
• This manual provides information necessary for the installation, operation, and maintenance of the
boiler.
• The model description is listed on the rating plate which is attached to the side panel of the boiler.
• Please read all instructions completely before installing this product.
• If you have any problems or questions regarding this equipment, consult the manufacturer or its
local representative.
• This equipment is a micro boiler designed to effi ciently supply endless hot water for your needs.
(Radiant Heating, or Domestic Water used in-conjunction with Radiant Heating) See DHW Integra-
tor Panel for more information on integrating domestic water with your radiant heating system.
• These boilers are only to be installed indoors.
• The principle behind micro boilers is easy:
*This diagram illustrates micro boiler design concepts only and does not accurately represent the
boilers physical description.
1. Your thermostat indicates a need for heat and turns on the circulator pump(s).
2. Water fl ows through the boiler.
3. The fl ow sensor detects the water fl ow.
4. The computer initiates the fan motor and sends a signal to the igniter to create an ignition spark.
5. The gas ignites and fl ames appear within the burner chamber.
6. Water circulates through the heat exchanger and then gets hot.
7. Using thermistors to measure temperatures throughout the micro-boiler, the computer modulates
the gas and water valves to ensure proper output water temperature.
8. When your room reaches desired temperature the pumps turn off and the boiler shuts down.
HeaƟng panel “Integrator” Strainer
Gas valve
Thermistor
Burner
GAS
HydroShark 115
Air vent
Expansion tank
Flow sensor
Water control valve
Pump controller
Primary pump
Secondary pump
Radiant heĂƟng
Water supply
Check valve

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SAFETY GUIDELINES
SAFETY DEFINITION
GENERAL
Indicates an imminently hazardous situation which, if not avoided, will result in
death or serious injury.
Indicates an imminently hazardous situation which, if not avoided, could result in
death or serious injury.
Indicates an imminently hazardous situation which, if not avoided, could result in
minor or moderate injury.
1. Follow all local codes , or in the absence of local codes, follow the current edition of the National
Fuel Gas Code: ANSI Z223.1/NFPA 54 in the USA or B149.1 Natural Gas, Propane Installation
Code in Canada.
2. Properly ground the unit in accordance with all local codes or in the absence of local codes, with
the National Electrical Codes: ANSI/NFPA 70 in the USA or CSA standard C22.1 Canadian Electri-
cal Code Part 1 in Canada.
3. Carefully plan where you intend to install the micro boiler. Please ensure:
•Your micro boiler will have enough combustible air and proper ventilation
•Locate your micro boiler where water leakage will not damage surrounding areas.
4. Check the rating plate for the correct Gas Type, Gas Pressure, Water Pressure and Electric
Rating.
5. *If this unit does not match your requirements, do not install and consult with the manufacture.
6. If any problem should occur, turn off the unit and unplug the zone controls for the space heating
and/or DHW Integrator Panel system zone controls and turn off the gas. Then call a trained techni-
cian or the Gas Company or the manufacture.
• Water temperature over 125°F (52°C) can cause severe burns instantly or
death from scalding. The water temperature is set at 120°F (50°C) from the
factory to minimize any scalding risk. If using micro boiler with HydroShark
DHW Integrator Panel, always check the water temperature. Always verify
emitter water delivery temperature requirements to avoid damage.
• Do not store or use gasoline or other fl ammables, vapors, or liquids in the
vicinity of this appliance.
• Do not reverse the fl uid and/or gas connections as this will damage the gas
valves and can cause sever injury or death.
• Do not use this appliance if any part has been in contact with or been im-
mersed in water. Immediately call a licensed plumber, a licensed gas fi tter, or
a professional service technician to inspect and/or service the unit if neces-
sary.
• Do not disconnect the electrical supply if the ambient temperature will drop
below freezing. The freeze protection system only works if the unit has electri-
cal power. The warranty will not be covered if the heat exchanger is damaged
due to freezing.
DANGER
WARNING
CAUTION
WARNING

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INSTALLATION
GENERAL
1. Follow all local codes, or in the absence of local codes, follow the current edition of the National
Fuel Gas Code: ANSI Z223.1/NFPA 54 in the USA or B149.1 Natural Gas, Propane Installation
Code in Canada.
2. All gas micro boilers require careful and correct installation to ensure safe and effi cient operation.
This manual must be followed exactly. Read the “Safety Guidelines” section.
3. The manifold gas pressure is preset at the factory. It is computer controlled and should not need
adjustment.
4. Maintain proper space for servicing. Install the unit so that it can be connected or removed easily.
Refer to the “Clearances” section for proper clearance.
5. The micro boiler must be installed in a location where the proper amount of combustible air will be
available to it at all times without obstructions.
6. The electrical connections requires a means of disconnections, to terminate power to the micro
boiler for servicing and safety purposes.
7. Do not install the unit where the exhaust vent is pointing into any opening in the building or where
the noise may disturb your neighbors. Make sure the vent termination meets the required distance
by local code from any doorway or opening to prevent exhaust from entering a building.
8. Particles from fl our, aerosols, and other contaminants may clog the air vent, build up and reduce
the functions of the rotating fan, cause improper burning of the gas, or cause damage to the micro
boiler. Regularly ensure that the area around the unit is dust or debris free. Regular maintenance
is recommended for these types of environment.
9. If you will be installing the micro boiler in a contaminated area with a high level of dust, sand ,
fl our, aerosols or other contaminates/chemicals, they can become airborne and enter and build up
within the fan and burner causing damage to the micro boiler.
10. For the HydroShark 115:
• This unit may be converted to a direct-vent appliance by installing a direct-vent conversion kit.
(TK-TV10) which will bring in all required combustible air from outside the building. When installing
the direct-vent conversion kit, please follow all instructions included with the kit.
• If the boiler is used as a direct vent appliance, the unit requires 3” combustible air supply pipe. The
intake pipe must be sealed airtight. Air supply pope can be made of ABS, PVC, galvanized steel,
corrugated aluminum , corrugated stainless steel or Category III stainless steel.
• Terminating the venting through a sidewall is recommended for the direct-vent system.
• Running the exhaust vent and the intake pipe parallel is recommended.
• Terminate the exhaust and intake on the same wall / surface is recommended. Terminating the
same pressure zone allows for pressure balancing, which prevents nuisance shutdowns.

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• Installation and service must be performed by a qualifi ed installer (for
example, a licensed plumber or gas fi tter, otherwise the warranty will be
void.
• The installer (licensed professional) is responsible for the correct instal-
lation for the micro boiler and for compliance with all national, state /
provincial, and local codes.
• The manufacturer does not recommend installing the micro boiler in a
pit or location where gas and water can accumulate.
• Do not have the vent terminal pointing toward any operating window, door, or
opening into a building.
• Do not install next to any source of airborne debris, such as clothes dryer, that
can cause debris to be trapped inside the combustion chamber, unless the
system is direct vented.
• The manufacturer does not recommend installing the micro boiler in an
attic due to safety issues. If you install the micro boiler in an attic:
-Make sure the unit will have enough combustion air and proper ventilation.
-Keep the area around the micro boiler clean. When dust collects on the
fl ame sensor, the micro boiler will shut down on an error code.
-Place the unit for easy access for service and maintenance.
-A drain pan, or other means of protection against water damage, is to be
installed under the micro boiler in case of leaks.
• The warranty will not cover damage cause by water quality.
-Only distilled water or distilled water/glycol mixtures can be used with this
micro boiler, unless when used in-conjunction with Stiebel Eltron DHW Integra-
tor Panel system. Do not introduce pool or spa water, or any chemically treated
water into the micro boiler.
-Water hardness levels must not exceed 7 grains per gallon (120 ppm) for
single family applications or more than 4 grains per gallon (70 ppm) for all other
types of applications/ Water hardness leads to scale formation and may aff ect
/ damage the micro boiler. Hard water scaling must be avoided or controlled by
proper water treatment.
-Water pH levels must be between 6.5 and 8.5.
-Well water must be treated.
• Do no install the micro boiler where water, debris, or fl ammable vapors may
get into the fl ue terminal.
• Although the micro boiler is designed to operate with minimal sound, the
manufacturer does not recommend installing the unit on a wall adjacent
to a bedroom, or a room that is intended for quiet study or meditation,
etc.
• Locate your boiler close to a drain where water leakage will not do damage to
surrounding areas. As with any water heating appliance, the potential for leak-
age at some time in the life of the product does exist. The manufacturer will
not be responsible for any water damage that may occur. If you install a drain
pan under the unit, ensure that it will not restrict the combustion air fl ow.
WARNING
NOTICE

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Model Top BoƩom Front Back Sides
12” HydroShark 115* 12” 24” 1” 2 “
*Standard indoor installĂƟŽns and direct-vent indoor instalůĂƟŽns have the same clearances.
BoƩom
Side
Top
Side
Front
Back
CLEARANCES
INCLUDEDACCESSORIES
Check that these items below are included with the micro boiler.
Maintain all clearances
around the micro boiler.
Failure to do so could cre-
ate a fi re hazard, potentially
leading to death, serious
injury, and/or property dam-
age.
WARNING
1. InstallaƟon Manual and
Owner’s Guide
2. Remote controller
900766605 (TK-RE02)
Qty: 1 Qty: 1

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HIGH-ALTITUDEINSTALLATIONS
Check the elevation where your micro boiler is installed. Set DIPswitches shown in the table
below depending on the altitude.
AůƟƚƵĚĞ 0 ƚŽ 2,000 Ō
(DEFAULT) 2,000 ƚŽ 4,000 Ō4,000 ƚŽ 6,000 ŌOvĞr 6,000 Ō
ON
OFF OFF Swiƚch NŽ.3
OFF
OFF ONSwiƚch NŽ.4

ࣰࣱࣲ࣭࣮࣯ࣳࣴ

ࣰࣱࣲ࣭࣮࣯ࣳࣴ

ࣰࣱࣲ࣭࣮࣯ࣳࣴ
WARNING
DipswiƚĐhĞs
Th
ĞĚĂƌk sqƵĂƌĞs ŝŶĚŝĐĂƚĞ ƚhĞ
ĚiƌĞcƟŽn ƚhĞĚiƉƐǁŝƚĐŚĞƐ ƐŚŽƵůĚ
bĞsĞƚ ƚŽ

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VENTING INSTRUCTIONS
GENERAL
• Improper venting of this appliance can result in excessive levels of carbon
monoxide which can result in severe personal injury or death.
• Improper installation can cause nausea or asphyxiation, severe injury or death
from carbon monoxide and fl ue gases poisoning. Improper installation will
void product warranty.
When installing the vent system, all applicable national and local codes must be
followed. If you install thimbles, fi re stops or other protective devices and they
penetrate any combustible or noncombustible construction, be sure to follow all
applicable national and local codes.
This appliance must be vented in accordance with the section” Venting of Equipment” of the current
edition of the National Fuel Gas Code: ANSI Z223.1/NFPA 54 in the United States and/or Section 8 of
the B149.1 Natural Gas and Propane Installation Code in Canada, as well as applicable local building
codes. The manufacturer recommends NovaVENT or Z-Vent Category III, single wall, stainless steel
venting.
General rules for venting micro boilers are:
General rules for vent terminations:
• Place the micro boiler as close as possible to the vent termination.
• The vent collar of the micro boiler must be fastened directly to an unobstructed vent pipe.
• Do not weld the vent pipe to the micro boiler’s vent collar.
• Do not cut the vent collar of the unit.
• The vent must be easily removable from the top of the boiler for normal service and inspection of
the unit.
• The micro boiler vent must not be connected to any other gas appliance or vent stack except an
approved common venting system.
• Avoid using an oversized vent pope or using extremely long runs of the pope unless it is part of an
approved common vent system.
• For rooftop venting, a rain cap or other from of termination that prevents rain water from entering
into the micro boiler must be installed.
• Do not terminate vent into chimney. If the vent must go through the chimney, the vent must run all
the way through the chimney with approved vent pipe.
• Avoid locating the micro boiler vent termination near any air intake devices. These fans can pick
up the exhaust fl ue products from the micro boiler and return them to the building. This can create
a health hazard.
• Locate the vent termination so that it cannot be blocked by any debris, at any time. Most codes re-
quire that the termination be at least 12 in. (305 mm) above grade, but the installer may determine
if it should be higher depending on the job site condition and applicable codes.
• A proper sidewall termination is recommended when the micro boiler is vented through a sidewall.
• Be sure to check the clearance form the exhaust termination to the air inlet or opening in the vent
termination clearances section.
DANGER
CAUTION
The boiler can obtain its combustion air from the space that it is installed in or it can be direct vented
using the direct vent conversion kit (TK-TV10). Ensure the location has suffi cient, clean combustion
air.

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NOTICE
• The guidelines in this section apply to installations within the United Sates. All
U.S. installation must conform to the National Fuel Gas Code, ANSI Z223.1/
NFPA 54 (current edition) and local codes.
• Canadian requirements diff er from the guidelines in this section. In Canada,
follow the requirements of B149.1 (Natural Gas and Propane Installation Code,
current edition) as well as local and provincial codes. Contact your local code
enforcement agency for direction.
WARNING
This micro boiler requires an adequate source of clean air for combustion and
ventilation. Without suffi cient air, your boiler may not operate properly and may emit
excessive and abnormal amounts of carbon monoxide which may result in carbon
monoxide poisoning or death.
Before installing the boiler, you must determine the amount of air needed to supply this boiler and an
other gas appliances in the same area and provide adequate air for combustion and ventilation. Con-
sult a qualifi ed person if you’re unsure of the proper way to supply air to your boiler.
Air for combustion and ventilation must be clean and free of corrosive chemicals. If corrosive chemi-
cals, such as sulfur, fl ouring, or chlorine are present, the boiler must be direct vented. Failure due to
these corrosive chemicals is not covered by the warranty.
Check for Chemicals:
In all cases, ensure that corrosive chemicals are not present at the air intake. Presence of such
chemicals at the air intake could result in death, personal injury, or property damage. Examples of
locations that require outside air due to chemicals include:
• Beauty salons
• Photo processing labs
• Indoor pools
• Laundry, hobby, or craft rooms
• Chemical storage areas
Products such as aerosol sprays, detergents, bleaches, cleaning solvents, gasoline, air fresheners,
paint, varnish removers, and refrigerants should not be stored or used near the micro boiler.
WARNING!
Combustion Air Supply

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Exhaust Venting
This is a Category III appliance and must be vented accordingly. The vent system must be sealed
airtight. All seams and joints without gaskets must be sealed with high heat resistant silicone sealant
or UL listed aluminum adhesive tape having a minimum temperature rating of 350° F. For best results,
a vent system should be as short and straight as possible.
• This boiler is a Category III appliance and must be vented accordingly with any 4” vent approved
for use with Category III or Special BH type gas vent.
• Follow the vent pipe manufacturer’s instructions when installing vent pipe.
• Do not common vent this appliance with any other vented appliance. (Do not terminate vent
into a chimney. if the vent must go through the chimney, the vent must run all the way through the
chimney with Category III approved or Special BH vent pipe.)
• When the horizontal vent run exceeds 5 ft. (1.5 m), support the vent run at 3 ft. (0.9 m) intervals
with overhead hangers.
• When th event run exceeds 5 ft. (1.5 m), a condensate drain is recommended. It should be in-
stalled as close to the boiler as possible.
• The maximum length of exhaust vent piping must not exceed 50 ft. (15.2 m) (deducting 5 ft. (1.5
m) for each elbow used in the venting system.) Do not use more than 5 elbows.
Venting Illustrations
Diameter Max. No. of Elbow Max. VerƟcal and Horizontal (Total) Vent Length
4” 5 50 Ō.
No. of Elbows
*For each elbow added, deduct 5 Ō. from max. Vent length.
Max. sĞƌƟĐĂů or Horizontal Length
0 50 Ō
1 45 Ō
2 40 Ō
5 25 Ō
Horizontal InstallaƟŽŶ Diagram VerƟcal InstallaƟon Diagram
Wall
Terminator
Sidewall Vent
BackŇow Preventer*
VerƟcal CondensaƟon Drain**
Roof
Roof Flashing
sĞƌƟĐĂů CondensaƟon
Drain**
Rain Cap
BackŇow Preventer *

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Venting Illustrations
Horizontal /ŶƐƚĂůůĂƟŽŶ Diagram
With Direct-Vent Concentric
TerminaƟŽn
Horizontal InstallaƟŽŶ Diagram
(With direct-ǀĞŶƟŶŐͿ
*BackŇow Preventer (Recommended for freezing weather condiƟons: 36°F and below)
**VerƟcal CondensaƟon Drain must be installed accordance with local codes.
sĞƌƟĐal InstĂůůĂƟŽŶ Diagram
(With direct-venƟŶŐͿ
Direct-Vent
Intake port of
Conversion Kit
Wall
Direct-vent
Concentric
InstallaƟon Di
agram of Direct-Vent
Conversion Kit
TerminaƟon
Plate of Direct-Vent Conversion Kit
BackŇow sĞƌƟĐĂů CondensaƟon Drain**
Wall
Preventer *
Sidewall
Terminator
Vent
See the picture below for detailed connecƟon
instrucƟons to the Direct-Vent Conversion Kit.
Roof Flashing
VerƟcal
CondensaƟŽn
Drain**
BackŇow
Preventer *
Roof
Rain Cap
Fire stop

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Vent Termination Clearances
Canada U.S.A
Direct vent
Direct vent and
other than Direct
Vent
Other than Direct Vent
A 1 foot 1 foot
1 foot
B
Clearance above grade, veranda, porch, deck,
or balcony.
3 feet 1 foot
Clearance to window or door that may be
opened.
C * *
4 feet from below or side
opening. 1 foot from
above opening.
*
D
Clearance to permanently closed window
* * *
E * * *
F
Clearance to unvenƟlated soĸt
** *
G
Clearance to outside corner
VerƟcal clearance to veŶƟůĂted soĸt located
above the vent terminator within a horizontal
distance of 2 feet (61cm) from the center line
of the terminator.
** *
H
Clearance to inside corner
*3 feet *
I
Clearance to each side of center line extended
above meter/regulator assembly
*3 feet *
J
Clearance to service regulator vent outlet.
3 feet 1 foot
K
Clearance to non-mechanical air supply inlet
to building or the combusƟon air inlet to any
other appůŝĐĂƟon.
4 feet from below or side
opening. 1 foot from
above opening.
6 feet 3 feet 3 feet
L
Clearance to mechanical air supply inlet.
*7 feet 7 feet
M
Clearance above paved sidewalk or paved
driveway located on public property.
* *1 foot
Clearance under veranda, porch deck, or
balcony.
*For clearances not spĞĐŝĮĞĚ in ANSI Z223.1 / NFPA 54 or CAN/CSA-B149.1, please use clearances in accordance with
local installaƟon codes and the requirements of the gas supplier.

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1Ō.
For sidewall terminaƟons
1Ō. 2Ō.
Inside
corner
Exhaust terminaƟŽŶ
Please follow all local and naƟŽnal codes in regards to proper terminaƟŽŶ clearances.
In the absence of such codes, the following clearances can be used as guidelines. Local
codes supersede these guidelines.
For ŵƵůƟƉle sidewall exhaust
terminaƟons (e.g. mulƟ-unit
systems), an exhaust terminaƟŽŶ
must be at least 1 Ō. away from
another exhaust teƌŵŝŶĂƟŽŶ An
exhaust terminaƟon must also be
at least 2 Ō away from an inside
corner (if the adjacent wall is less
than 2 Ō. of length, the minimum
required distance away from the
inside corner will be equal to the
length of that adjacent wall).
For direct-vent sidewall
terminĂƟŽŶƐ that use two
separate penetraƟŽns for the
intake and exhaust, distance
the intake and exhaust
terminĂƟŽŶƐ at least 3 Ō away
from each other, no maƩer the
orientaƟon.
For ŵƵůƟƉle-unit, direct-vent sidewall
terminaƟons that combine the intake
and exhaust into a single penetraƟon,
space each direct-vent terŵŝŶĂƟŽŶ at
least 1 Ō. away from each other, no
maƩer the orientaƟon. A direct-vent
terminaƟon must also be at least 2 Ō.
away from an inside corner (if the
adjacent wall is less than 2 Ō. of
length, the minimum required
distance away from the inside corner
will be equal to the length of that
adjacent wall).
Exhaust terŵŝŶĂƟon
A: In accordance with local codes
For roŽŌŽƉ terminaƟons
Air intake
A
A
A
A
A
ϮŌ.
Air intake
Exhaust
terminaƟon
2Ō.
Exhaust
ϯŌ.
terminaƟon
3Ō.
ϯŌ.
For ŵƵůƟƉle-unit rooŌŽƉ teƌŵŝŶĂƟons (whether for standard indoor or
direct-vent installĂƟons) space all exhaust and intake terminaƟons in
accordance with local codes. An exhaust terminaƟon must be spaced from
a wall or surface in accordance with local codes as well. In the absence of
such a code, an exhaust terminaƟŽŶ must be a horizontal distance of at
least 2 Ō. away from a wall or surface.
Air supply inlet
1Ō.
ϭŌ.
Inside
corner
Direct vent ƚĞƌŵŝŶĂƟŽŶ
2Ō.
CAUTION
Exhaust and/or direct-vent
sidewall terminaƟŽŶƐ should
be at least 2 Ō away from an
opposite surface/wall. Do
not place the terminaƟon
directly in front of an
opening into a building.

18 | HYDROSHARK 115 WWW.HYDRO-SHARK.COM
GASSUPPLYANDGASPIPINGSIZE
• Check that the type of gas matches the rating plate fi rst.
• Ensure that any and all gas regulators are operating properly and
providing gas pressures withing the specifi ed range shown below.
Excess gas inlet pressure may cause serious accidents.
• Conversion of this unit from natural gas to propane or vice versa will void all
warranty. Contact your local distributor to get the correct unit for your gas
type. The manufacturer is not liable for nay property and/or personal
damage resulting from gas conversions.
• The minimum and maximum inlet gas pressures are:
• Inlet gas pressures that fall outside the range of values listed above may adversely aff ect the per-
formance of the micro boiler. These pressures are measured when the micro boiler is in full opera-
tion.
• Inlet gas pressure must not exceed the above maximum values; gas pressure above the specifi ed
range will cause dangerous operating conditions a damages to the unit.
• Until testing of the main gas line supply pressure is completed, ensure the gas line to the micro
boiler is disconnected to avoid any further damage.
Gas connections
1. Install a manual gas shutoff valve between the micro boiler and the gas supply.
2. When the gas connections are completed, it is necessary to perform a gas leak test either by
applying soapy water to all gas fi ttings and observing for bubble or by using a gas leak detection
device.
• The micro boiler and its individual shutoff valve must be disconnected from the gas supply pip-
ing system during any pressure testing of that system at the test pressures in excess of 1/2 psi
(3.5kPa).
• The micro boiler must be isolated from the gas supply piping system by closing its individual
manual shutoff valve during any pressure testing of the gas supply piping system at test pressures
equal to or less than 1/2 psi (3.5 kPa).
3. Always purge the gas line of any debris and/or water before connecting to the gas inlet.
Size the gas pipe appropriately to supply the necessary volume of gas required for
the micro boiler using ANSI Z223.1/NFPA 54 in the USA of B149.1 in Canada or
local codes. Otherwise, fl ow capabilities and output temperatures will be limited.
CAUTION
NOTICE
Gas type Inlet gas pressure
Natural Gas Min. 5.0” WC – Max. 10.5” WC
Propane Min. 8.0” WC – Max. 14.0” WC

WWW.HYDRO-SHARK.COM HYDROSHARK 115| 19
Natural Gas Supply Piping
Maximum delivery Capacity of Cubic Feet of Gas per Hour of IPS Pipe carrying Natural Gas with 0.60
Specifi c Gravity Based on Pressure Drop of 0.5”W.C.
Based on Energy Content of 1,000 BTU/Cubic ft.: The micro boiler requires 140 Cubic ft./hr.
Propane (LP) Supply Piping
Maximum Capacity of Propane (LP) Based on 11” W.C. supply pressure at 0.5” W.C. pressure drop.
Based on Energy Content of 1,000 BTU/Cubic ft.
Divide each appliance’s BTU/h requirement by 1,000 BTU/ft³ to get the
appliances ft³/h requirement.
Take into account the distance the appliance is from the
gas meter, look in the above gas chart to properly size
the line.
For sections of the gas line supplying gas to more than
one appliance (Ex. Point A to Point B), add up the cubic
ft. per hour requirements of the appliances that are
being supplied by that section, and size to the farthest
appliance.
For Example: The section from A to B supplies gas
to the furnace, range and dryer. Adding up the BTU/h
requirements and dividing by 1,000 yields a cubic ft. per
hour requirements of 220 cubic ft. of gas per hour. The
farthest appliance is the range, which is 50 ft. away form
the meter. Looking at the above chart, and under column
of 50 ft., Section A to B needs to be 1” in order to supply 220 cubic ft.
10’ Length
C
1” Pipe Size
Gas Sizing Example
(Natural Gas)
10’ Length
3/4” Pipe Size
15’ Length
10’ Length
Furnace
120,000BTU
Micro
Boiler
199,000BTU
5’ Length
Range
65,000BTU
1-1/4” Pipe Size
10’ Length
Dryer
3/4” Pipe Size
35,000BTU
15’ Length
1” Pipe Size
5’ Length
B
1-1/4” Pipe Size
A
Gas Meter
Pipe Size
Unit: Cubic Feet per Hour
Length
Diameter 10’ 20’ 30’ 40’ 50’ 60’ 70’ 80’ 90’ 100’ 125’ 150’ 200’
¾” 363 249 200 171 152 138 127 118 111 104 93 84 72
1” 684 470 377 323 286 259 239 222 208 197 174 158 135
1 ¼” 1,404 965 775 663 588 532 490 456 428 404 358 324 278
1 ½” 2,103 1,445 1,161 993 880 798 734 683 641 605 536 486 416
2” 4,050 2,784 2,235 1,913 1,696 1,536 1,413 1,315 1,234 1,165 1,033 936 801
Unit: kBTU per Hour
Pipe Size Length
Diameter 10’ 20’ 30’ 40’ 50’ 60’ 70’ 80’ 90’ 100’ 125’ 150’ 200’
¾” 567 393 315 267 237 217 196 185 173 162 146 132 112
1” 1,071 732 590 504 448 409 378 346 322 307 275 252 213
1 ¼” 2,205 1,496 1,212 1,039 913 834 771 724 677 630 567 511 440
1 ½” 3,307 2,299 1,858 1,559 1,417 1,275 1,181 1,086 1,023 976 866 787 675
2” 6,221 4,331 3,465 2,992 2,646 2,394 2,205 2,047 1,921 1,811 1,606 1,496 1,260
For more informaƟŽn, please see the below.

20 | HYDROSHARK 115 WWW.HYDRO-SHARK.COM
Measuring inlet gas pressure
1. Turn off all electric power to the micro boiler if service is to be performed.
2. Turn the manual gas valve located on the outside of the unit clockwise to
the off position.
3. Failure to follow these steps could lead to a fi re or explosion, resulting in
personal injury or death.
1. Shut off the manual gas valve on the gas supply line.
2. Remove the screw for the pressure port located on the
gas inlet of the micro boiler shown in the diagram on the
right.
3. Connect the manometer to the pressure port.
4. Re-open the manual gas valve. Check to see that there
are no gas leaks.
5. Check in inlet gas pressure. When the micro boiler is on
maximum and minimum burn, the manometer should
read from 5.0” W.C. to 10.5” W.C. (1.24 to 2.61 kPa) for
Natural Gas, from 8.0” to 14.0” W.C. (1.99 to 3.48 kPa)
for Propane.
The micro boiler cannot perform properly without suffi cient inlet gas pressures. Below are instructions
on how to check the inlet gas pressure. THIS IS ONLY TO BE DONE BY A LICENSED PROFESSIONAL.
WATERCONNECTIONS
Do not use the micro boiler if any part has been under water. Immediately
contact a qualifi ed installer or licensed professional to inspect the boiler to
determine if it needs to be replaced.
Do not reverse the hot outlet and cold inlet connections to the micro boiler.
This will not properly activate the micro boiler.
All pipes, pipe fi ttings, valves and other components, including soldering materials, must be suitable
for potable water systems (when using DHW Integrator Panel), or distilled water or distilled water/gly-
col mix.
1. A manual shutoff valve must be installed on the cold
water inlet to the micro boiler between the main water
supply line and the micro boiler.
2. In addition, a manual shutoff valve is also recommend-
ed on the hot water outlet of the unit. If the micro boiler
is installed within, or subjected to, a closed loop system
(recommended), a thermal expansion tank or code
approved device to handle the thermal expansion must
be installed.
3. Before installing the micro boiler, fl ush the water line
to remove all debris, and after installation is complete,
purge the air from the line. Failure to do so may cause
damage to the boiler.
NOTICE
WARNING
WARNING
Pressure port
Pressure Hot
Relief Valve
Cold
outlet inlet inlet
Gas
Possible
As Close as