STIEBEL ELTRON HydroShark 120NG, HydroShark 120LP, HydroShark 120 Operation And Installation

OPERATION AND INSTALLATION
UTILISATION ET INSTALLATION

Condensing Gas Micro-boiler

»HydroShark 120NG
»HydroShark 120LP

Conforms to ANSI Z21.10.3/CSA 4.3

Conforme à la norme ANSI Z21.10.3/CSA 4.3

HydroShark 120 Condensing Gas Micro Boiler
Installation Manual and Owner’s Guide

ANSI Z21.10.3 and CSA 4.3

Models

• HydroShark 120LP (Liquid propane)

• HydroShark 120NG (Natural Gas)

If the information in these
instructions is not followed
exactly, a fi re or explosion

WARNING

may result causing property
damage, personal injury or
death.

The HydroShark 120 Condensing Gas
Micro-Boiler is a compact and powerful
residential unit with a versatile BTU modulating
range.

Please refer to local codes for space-heating
compliance.

FEATURING

• EFFICIENCY: 93%

• TEMP RANGE: 99° - 140°F

• COMPACT, SPACE SAVING

• FLOW ACTIVATED: .75 GPM

• COMPUTERIZED SAFETY

• NO PILOT LIGHT

• Satisfi es the 2012 SCAQMD Rule

1146.2 for Ultra-Low NOx Emissions

- 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.

If you have any questions,

please call or write to:

17 West St.

West Hatfi eld, MA 01088

Toll Free: 800.805.5384

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CONTENTS

INSTALLATION MANUAL ........................................................................3

SPECIFICA TIONS .................................................................................................4

INTRODUCTION ....................................................................................................5

SAFETY GUIDELINES ..........................................................................................6

INST ALLATION ......................................................................................................7

-GENERAL- .................................................................................................................7

-INCLUDED ACCESSORIES- .....................................................................................9

-CLEARANCES- ..........................................................................................................9

-VENTING INSTRUCTIONS- ....................................................................................10

-GAS SUPPLY AND GAS PIPE SIZING- ...................................................................20

-CONDENSATE DRAIN- ...........................................................................................26

-ELECTRICAL CONNECTIONS- ...............................................................................28

-HIGH-ALTITUDE INSTALLATIONS- .........................................................................29

Contents

-WATER CONNECTIONS- ........................................................................................30

APPLICA TIONS ...................................................................................................31

-INITIAL OPERATION- ..............................................................................................33

OPTIONAL ITEMS ...............................................................................................34

OWNER'S GUIDE .................................................................................40

OPERATING SAFETY .........................................................................................41

NORMAL OPERATION ........................................................................................43

-DISPLAY OF THE CONTROLLER- ..........................................................................43

-GENERAL- ...............................................................................................................43

-TEMPERA TURE TABLE OF THE CONTROLLER- ..................................................43

-TEMPERATURE SETTINGS- ..................................................................................44

-ADDITIONAL FEATURES- .......................................................................................45

-FLOW- ......................................................................................................................46

-FREEZE PROTECTION SYSTEM- ..........................................................................46

-MAINTENANCE AND SERVICE- .............................................................................47

-UNIT DRAINING- .....................................................................................................47

TROUBLESHOOTING .........................................................................................48

-GENERAL- ...............................................................................................................48

-ERROR CODES- ......................................................................................................49

COMPONENTS DIAGRAM ..................................................................................52

PARTS LIST .........................................................................................................56

OUTPUT TEMPERATURE CHART .....................................................................58

LIMITED WARRANTY ..........................................................................................59

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Installation Manual

CONGRATULATIONS

Congratulations and thank you for choosing our condensing micro-boiler. Before use, we recommend
that you read through this safety manual carefully. Please refer to the back of the manual for details
about the warranty. Keep this manual for future reference.
If you lose the manual, contact the manufacturer or your local distributor. When you call, please tell us
the model number and the serial number of your unit written on the rating plate of the micro-boiler.

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SPECIFICATIONS

HydroShark Gas Condensing Micro-Boiler

Specifi cations

Natural Gas Input
(Operating Range)

Propane Input
(Operating Range)

BTU/h

BTU/h

Min.: 15,000

Max.: 120,000

Min.: 15,000

Max.: 120,000

Gas Connection 1/2" NPT
Water Connection 3/4" NPT

Water Pressure*
Natural gas

Inlet Pressure
Propane

Inlet Pressure

Natural

Manifold

Gas

psi

(MPa)

inch W.C.

(kPa)

inch W.C.

(kPa)

inch W.C.

(Pa)

15 - 150 (0.1 - 1.0)

Min. 5.0 (1.2)

Max. 10.5 (2.6)

Min. 8.0 (2.0)

Max. 14.0 (3.5)

3.30

(820)

Pressure
**

Propane

inch W.C.

(Pa)

3.00

(750)

2.00

(500)

1.60

(400)

Weight lbs. (kg) 50 (22.5) 50 (22.5)

inch

Dimension

mm

H 21-3/4 x W 14 x D 9-1/4

H 552 x W 352 x D 236

Ignition Electric Ignition

Supply VAC / Hz 120 / 60

Operation W / A 53.9 / 0.7
Standby W / A 3.2 / 0.05

Freeze-

Electric

* 40 psi (0.27 MPa) or above is recommended for maximum fl ow.
** The manifold pressure is the factory setting and should not need adjustment.

Note:

Check the rating plate to ensure this product matches your specifi cations.
In accordance with ANSI Z21.10.3, CO emission does not exceed 400 PPM for normal input.
The manufacturer reserves the right to discontinue, or change at any time, specifi cations or designs
without notice and without incurring obligation.

Protection

Consumption

W / A 223.9 / 1.94

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Introduction

INTRODUCTION

• This manual provides information necessary for the installation,operation, and maintenance of the
micro-boiler.

• The model description is listed on the rating plate which is attached to the side panel of the micro­boiler.

• Please read all installation instructions completely before installing this product.

• If you have any problems or questions regarding this equipment, consult the manufacturer or its
local representative.

• These hight effi ciency models have a built-in secondary heat exchanger that absorbs latent heat
from the exhaust gas.

• The HydroShark 120 Condensing Gas Micro Boiler is only to be installed indoors.

• The principle behind condensing micro-boiler is simple:

Intake port

Exhaust
Thermistor

Exhaust

Secondary
heat exchanger

Primary
heat exchanger

Water control

Burners

Igniter

valve

Gas valve

Computer
board

Fan motor

Flow sensor

Thermistor

Condensate
drain port

Gas inlet

Hot water outlet

Cold water inlet

Thermistor

* This diagram illustrates condensing micro-boiler design concepts only and does not accurately
represent the micro-boiler's physical description.

1. Your thermostat indicates a need for heat and turns on a circulator pump.

2. Fluid enters the heater.

3. The fl ow sensor detects the fl uid 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. Fluid 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 fl uid temperature.

8. Your room reaches desired temperature and the micro-boiler shuts off.

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DANGER

WARNING

CAUTION

Safety Guidelines

SAFETY GUIDELINES

-Safety Defi nition-

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.

-General-

1. Follow all local codes, or in the absence of local codes, follow the most recent edition of the
National Fuel Gas Code: ANSI Z223.1/NFPA 54 in the USA or CAN/CSA B149.1 Natural Gas,
Propane Installation Code in Canada.

2. Properly ground the micro-boiler 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
Canada Electrical 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 boiler where fl uid leakage will not damage surrounding areas (refer to p. 9).

4. Check the rating plate for the correct GAS TYPE, GAS PRESSURE, FLUID PRESSURE and
ELECTRIC RATING.

*If this micro-boiler does not match your requirements, do not install and consult with the

manufacturer.

5. If any problem should occur, turn off all thermostats and turn off the gas. Then call a trained
technician or the Gas Company or the manufacturer.

• 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

WARNING

gas valves and can cause severe injury or death. Follow the diagram in
the Applications section on p. 32 when installing your micro-boiler.

• Do not use this micro-boiler if any part has been in contact with or been
immersed in water. Immediately call a licensed plumber, a licensed gas
fi tter, or a professional service technician to inspect and/or service the
micro-boiler if necessary.

• Do not disconnect the electrical supply if the ambient temperature will
drop below freezing. The Freeze Protection System only works if the
micro-boiler has electrical power. The heat exchanger will not be covered
under warranty if it is damaged due to freezing. Refer to "-FREEZE
PROTECTION SYSTEM-" on page 47 for more information.

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Installation

INSTALLATION

-General-

1. Follow all local codes, or in the absence of local codes, follow the most recent edition of the
National Fuel Gas Code: ANSI Z223.1/NFPA 54 in the USA or CAN/CSA 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 micro-boiler so that it can be connected or removed
easily. Refer to the "Clearances" section on p. 10 for proper clearances.

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 connection requires a means of disconnection, to terminate power to the micro-boiler
for servicing and safety purposes.

7. Do not install the micro-boiler where the exhaust vent is pointing into any opening in a 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
(refer to the "-Vent termination clearances-" section beginning on page 18).

8. Particles from fl our, aerosols, clothes dryers and other airborne 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 micro-boiler is dust­or debris- free. Regular maintenance is recommended for these types of environments. Sealed
combustion is recommended too.

9. The HydroShark 120 micro-boiler is to be installed indoors only. The model is equipped with a
thermistor and hi-limit switch for the exhaust gas, detecting excess temperatures within the fl ue
and enabling the micro-boiler to safely stop operation if needed. These components are always
monitoring exhaust gas conditions in order to prevent heat damage to ABS, PVC, CPVC, or
Polypropylene (Plastic) venting if ABS, PVC, CPVC, or Polypropylene is used. If the exhaust gas
temperature exceeds 140°F (60°C) these components will enable the micro-boiler to safely stop
operation.

• The micro-boiler requires 3 inch, or 4 inch diameter intake air supply pipe. The intake pipe
must be sealed airtight.

• Air supply pipe can be made of aluminum fl exible tube, ABS, PVC, CPVC, Polypropylene,
corrugated stainless steel, or Category III/IV stainless steel. Regarding exhaust pipe, please
refer to p. 12 for detailed information.

• Sidewall venting is recommended for this boiler. Vertical venting (roof termination) is
acceptable.

• The manufacturer recommends running the exhaust vent and the intake pipe as parallel as
possible.

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WARNING

Installation

• 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
installation of 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 the micro-boiler next to any source of airborne debris, such
as a clothes dryer and a vent 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 micro-boiler 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 micro-boiler in a location that provides easy access for
service and maintenance.

• A drain pan, or other means of protection against water damage, is
required to be installed under the micro-boiler in case of leaks.

• It is recommended to direct vent the heater.

CAUTION

• Damage caused by water quality is not covered by the warranty.

• Only potable water or potable water / glycol mixtures can be used
with this micro-boiler. 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 domestic applications or more than 4 grains per
gallon (70 ppm) for all other types of applications. Water hardness
leads to scale formation and may affect / damage the micro-boiler.
Hard water scaling must be avoided or controlled by proper water
treatment. Distilled water is recommended.

• Water pH levels must be between 6.5 and 8.5

• Well water must be treated.

• Do not 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 micro-boiler 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 fl uid heating appliance, the
potential for leakage at some time in the life of a product does exist. The
manufacturer will not be responsible for any water damage that may
occur. If you install a drain pan under the micro-boiler, ensure that it will
not restrict the combustion air fl ow.

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-INCLUDED ACCESSORIES-

Check that these items below are included with the micro-boiler.

Installation

Installation Manual

and Owner's Guide

Qty. 1 Qty. 2 Qty. 2

* For more information on optional items, please refer to "OPTIONAL ITEMS" section beginning on
page 35

Bird Screen PVC Couplers

-CLEARANCES-

Top

Maintain all clearances
around the micro-boiler.

Back

Side

Model Top Bottom Front Back Sides

HydroShark 120LP

(Liquid propane)

HydroShark 120NG

(Natural gas)

* 24 inches recommended for maintenance

12 in.

(305 mm)

12 in.

(305 mm)

(305 mm)

(305 mm)

12 in.

12 in.

Front

4 in. *

(120 mm)

4 in. *

(120 mm)

1 in.

(25 mm)

1 in.

(25 mm)

Side

3 in.

(76 mm)

3 in.

(76 mm)

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Installation - Venting

-VENTING INSTRUCTIONS-

For the HydroShark 120 Gas Condensing Micro Boiler

-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

DANGER

CAUTION

The micro-boiler must be vented in accordance with the section "Venting of Equipment" of the latest
edition of the National Fuel Gas Code: ANSI Z223.1/NFPA 54 in the United States and/or Section 7
of the CAN/CSA B149.1 Natural Gas and Propane Installation Code in Canada, as well as applicable
local building codes.
The use of venting materials approved for Category III/IV appliances is recommended whenever
possible. However, the micro-boiler may also be vented with plastic pipe materials such as ABS,
PVC, CPVC, or Polypropylene. For details, please refer to the Exhaust Vent (ABS, PVC, CPVC,
or Polypropylene Vent) section on p. 12. Vent installations in Canada which utilize plastic vent
systems must use venting that complies with ULC S636.

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.

General rules for venting micro-boiler are:

• 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 or alter the vent collar of the micro-boiler.

• The vent must be easily removable from the top of the micro-boiler for normal service and
inspection of the unit.

• Avoid using an oversized vent pipe or using extremely long runs of the pipe.

• For rooftop venting, a rain cap or other form of termination that prevents rain water from
entering into the micro-boiler must be installed.

• Do not terminate the vent into a chimney. If the vent must go through the chimney, the vent
must run all the way through the chimney with approved vent pipe.

General rules for vent terminations:

• 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 require that the termination be at least 12 inches (305mm) 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.

• Regarding the clearances from the exhaust termination to the air inlet or opening, refer to the
"-Vent termination clearances-" section beginning on page 18.

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Installation - Venting

-Exhaust vent (ABS, PVC, CPVC, or Polypropylene vent)-

The micro-boiler can be vented with ABS, PVC, CPVC, or Polypropylene (temperature rated up to at
least 149° F). Vent material certifi ed to ULC S636 standards is recommended in the USA. In Canada,
plastic venting must be certifi ed to ULC S636 standards.

Item Material United States Canada

Schedule 40 PVC ANSI/ASTM D1785

PVC-DWV ANSI/ASTM D2665

Exhaust pipe and

Fittings

Schedule 40 CPVC ANSI/ASTM F441

Schedule 40 ABS-

DWV

ANSI/ASTM D2661

ULC S636 Certifi ed

Materials Only

Polypropylene UL-1738

PVC ANSI/ASTM D2564

Pipe Cement / Primer

CPVC ANSI/ASTM F493

ABS ANSI/ASTM D2235

Note: Do NOT Use Cellular Foam Core Pipe

• The maximum length of exhaust vent piping must not exceed 70 ft. (21.3 m) for 3" venting,
which depends on the elevation where the micro-boiler is installed, and 100 ft. (30.5 m) for 4"
venting (deducting 5 ft. (1.5 m) for each elbow used in the venting system). Do not use more
than 5 elbows. See the table below.

• 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.

-Max. Vertical or Horizontal (total) Vent Length-

No. of
Elbow

2" venting 3" venting 4" venting

Up to 3,000 ft Up to 3,000 ft Up to 6,000 ft Up to 10,100 ft Up to 10,100 ft

0 6.5 ft. (2.0 m) 70 ft. (21.3 m) 40 ft. (12.2 m) 25 ft. (7.6 m) 100 ft. (30.5 m)
1 1.5 ft. (0.5 m) 65 ft. (19.8 m) 35 ft. (10.7 m) 20 ft. (6.1 m) 95 ft. (29.0 m)
2 N/A 60 ft. (18.3 m) 30 ft. (9.1 m) 15 ft. (4.6 m) 90 ft. (27.4 m)
3 N/A 55 ft. (16.8 m) 25 ft. (7.6 m) 10 ft. (3.0 m) 85 ft. (25.9 m)
4 N/A 50 ft. (15.2 m) 20 ft. (6.1 m) 5 ft. (1.5 m) 80 ft. (24.4 m)
5 N/A 45 ft. (13.7 m) N/A N/A 75 ft. (22.9 m)

- Excludes vent terminators, termination elbows, or rain caps.

- For details on the vent connection, refer to the "-Intake and Exhaust Venting Illustrations-"
section beginning on page 14.

* For each elbow added, deduct 5 ft. (1.5 m) from max. vent length.

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Installation - Venting

-GENERAL-

Set DIPswitches shown in the tables below depending on the vent length. Only adjust switches with a
black square. Black squares indicate the position of the switch.

2 inch venting

Vent length Single pipe

1 2 3 4 5 6 7 8 9 10

ON

5 to 6.5 ft.

3 inch venting

OFF

No. 6 : ON
No. 7 : ON

Vent length Two-pipe

1 2 3 4 5 6 7 8 9 10

5 to 20 ft.

(DEFAULT)

21 to 40 ft.

41 to 70 ft.

ON

OFF

No. 6 : ON
No. 7 : OFF

1 2 3 4 5 6 7 8 9 10

ON

OFF

No. 6 : OFF
No. 7 : OFF

1 2 3 4 5 6 7 8 9 10

ON

OFF

No. 6 : ON
No. 7 : ON

4 inch venting

Vent length Two-pipe and Single pipe

1 2 3 4 5 6 7 8 9 10

5 to 50 ft.

(DEFAULT)

ON

OFF

No. 6 : ON
No. 7 : OFF

Vent length Single pipe

1 2 3 4 5 6 7 8 9 10

5 to 45 ft.

(DEFAULT)

46 to 70 ft.

ON

OFF

No. 6 : ON
No. 7 : OFF

1 2 3 4 5 6 7 8 9 10

ON

OFF

No. 6 : OFF
No. 7 : OFF

51 to 100 ft.

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1 2 3 4 5 6 7 8 9 10

ON

OFF

No. 6 : OFF
No. 7 : OFF

-Intake and Exhaust Venting Illustrations-

Typical installations using ABS, PVC, CPVC, or Polypropylene vent

2 inch venting installation

Installation - Venting

Vent connections for single pipe

2" straight pipe

* 3" elbow with bird
screen

3"x2" reducer

Exhaust vent
collar (Female)

Intake vent
collar
(Female)

* The micro-boiler came with a metal screen that
will fi t into a 3 inch elbow.

1. Connect a 3" elbow directly on the intake vent collar of
the micro-boiler.

2. Connect a 3" x 2" reducer directly on the exhaust vent
collar of the micro-boiler. Make sure the couplings
engage the o-rings installed in the intake and exhaust
vent collars.

3. Connect a 2" straight pipe to the reducer.

For details of the optional items, refer to "OPTIONAL ITEMS" section beginning on page 35.

Refer to "-Vent termination clearances-" section beginning on page 18 for

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Single pipe with room-air intake

Hanger

clearance information

3 inch venting installation

Installation - Venting

Vent connections for two-pipe

3" straight pipe

3" coupling

Intake vent
collar
(Female)

3" straight pipe

3"coupling

Exhaust
vent collar
(Female)

1. Connect 3" couplings directly on the
exhaust and intake vent collar of the
micro-boiler. Make sure the couplings
engage the o-rings installed in the intake
and exhaust vent collars.

2. Connect 3" straight pipes to the
couplings.

For details of the optional items, refer to "OPTIONAL ITEMS" on page 35.

Vent connections for single pipe

3" straight pipe

* 3" elbow with
bird screen

Intake vent
collar
(Female)

* The micro-boiler came with a metal

screen that will fi t into a 3 inch elbow.

3" coupling

Exhaust
vent collar
(Female)

1. Connect a 3" elbow directly on the
intake vent collar of the micro-boiler.

2. Connect a 3" coupling directly on the
exhaust vent collar of the micro-boiler.
Make sure the couplings engage the
o-rings installed in the intake and
exhaust vent collars.

3. Connect a 3" straight pipe to the
coupling.

4 inch venting installation

Vent connections for two-pipe

4" straight
pipe

3"x4"
increaser

Intake vent
collar
(Female)

1. Connect 3" x 4" increasers directly on
the exhaust and intake vent collar of the
micro-boiler. Make sure the couplings
engage the o-rings installed in the intake
and exhaust vent collars.

2. Connect 4" straight pipes to the
increasers.

4" straight
pipe

3"x4" increaser

Exhaust
vent
collar
(Female)

Vent connections for single pipe

4" straight pipe

* 3" elbow with
bird screen

Intake vent
collar
(Female)

* The micro-boiler came with a metal

screen that will fi t into a 3 inch elbow.

3"x4" increaser

Exhaust vent
collar (Female)

1. Connect a 3" elbow directly on the
intake vent collar of the micro-boiler.

2. Connect a 3" x 4" increaser directly on
the exhaust vent collar of the micro­boiler. Make sure the couplings engage
the o-rings installed in the intake and
exhaust vent collars.

3. Connect a 4" straight pipe to the
increaser.

For details of the optional items, refer to "OPTIONAL ITEMS" on page 35.

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Examples of installation of 3 inch and 4 inch vent

Installation - Venting

Two-pipe, direct-vent

Hanger

Hanger

Wall

Single pipe with room-air intake

Hanger

Wall

Roof

Roof

Fire stop

Fire stop

Refer to "-Vent termination clearances-" section beginning on page 18 for

clearance information

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Installation - Venting

-Exhaust vent (Stainless steel vent)-

This is a Category IV 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 160° F. For best results,
a vent system should be as short and straight as possible.

• The micro-boiler is a Category IV appliance and must be vented accordingly with any 4 inch
vent approved for use with Category III / IV or Special BH type gas vent.

• The manufacturer recommends the NovaVent (Z-Vent) line. However, the following are also
UL listed manufacturers: ProTech Systems Inc. (FasNSeal), Metal-Fab Inc., and Heat-Fab Inc.
(Saf-T Vent).

• Follow the vent pipe manufacturer's instructions when installing the vent pipe.

• The maximum length of exhaust vent piping must not exceed 100 ft. (30.5 m) (deducting 5 ft.
(1.5 m) for each elbow used in the venting system). Do not use more than 5 elbows.

• 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.

Diameter Max. No. of Elbows Max. Vertical or Horizontal (Total) Vent Length

4 in. (102 mm) 5 100 ft. (30.5 m)

* For each elbow added, deduct 5 ft. (1.5 m) from max. vent length.

No. of Elbows Max. Vertical or Horizontal Vent Length

0 100 ft. (30.5 m)
1 95 ft. (29.0 m)
2 90 ft. (27.4 m)
3 85 ft. (25.9 m)
4 80 ft. (24.4 m)
5 75 ft. (22.9 m)

Excludes vent terminators, termination elbows, or rain caps.

Vent connections for two-pipe

4" stainless

4" stainless
steel vent
straight pipe

Intake vent collar
(Female)

steel vent
straight pipe

Exhaust vent
collar (Female)

1. Connect 4" stainless steel vent straight
pipes directly on the exhaust / intake
vent collar of the micro-boiler.

Vent connections for single pipe

4" elbow
with bird
screen

Intake vent
collar
(Female)

4" stainless
steel vent
straight pipe

Exhaust vent
collar (Female)

1. Connect a 4" stainless steel vent straight
pipes directly on the exhaust vent collar
of the micro-boiler.

2. Connect a 4" elbow directly on the
intake vent collar of the micro-boiler.

WWW.HYDRO-SHARK.COM HYDROSHARK 120 | 17

-Vent termination clearances-

INSIDE CORNER DETAIL

Vent terminal

V

Air supply inlet

X

G

V

Installation - Venting

A

H

D

E

V

B

B

V

C

D

E

X

I

F

L

V

V

F

CLO

O

D

E

S

B

E

L

B

A

R

E

P

R

E

P

O

V

B

A

B

B

V

D

E

X

E

I

L

F

B

A

CLO

D

E

S

M

I

X

V

J

Gas meter / regulator

Canada U.S.A

Direct-vent and other

than Direct-vent

Clearance above grade, veranda, porch, deck, or

A

balcony.

Clearance to window or door that may be opened 3 foot 1 foot

B

Clearance to permanently closed window * * *

C

Vertical clearance to ventilated soffi t located above the
vent terminator within a horizontal distance of 2 feet

D

(61 cm) from the center line of the terminator
Clearance to unventilated soffi t * * *

E

Clearance to outside corner * * *

F

Clearance to inside corner * * *

G

Clearance to each side of center line extended above

H

meter/regulator assembly
Clearance to service regulator vent outlet 3 feet * *

I

Clearance to non-mechanical air supply inlet to build-

J

ing or the combustion air inlet to any other application
Clearance to mechanical air supply inlet 6 feet 3 feet 3 feet

K

Clearance above paved sidewalk or paved driveway

L

located on public property
Clearance under veranda, porch deck, or balcony 1 foot * *

M

1 foot 1 foot 1 foot

* * *

3 feet * *

3 feet 1 foot

7 feet * 7 feet

Direct

- Vent

X

V

K

Other than

Direct -Vent

4 feet from below or

side opening. 1 foot

from above opening

4 feet from below or

side opening. 1 foot

from above opening

* For clearances not specifi ed in ANSI Z223.1/NFPA 54 or CAN/CSA-B149.1, please use clear-
ances in accordance with local installation codes and the requirements of the gas supplier.

18 | HYDROSHARK 120 WWW.HYDRO-SHARK.COM

Exhaust

. (305 mm)

min.

.

(305 mm) min.

.

(610 mm ) min.

Inside
corner

Installation - Venting

For multiple sidewall exhaust terminations, an exhaust
termination must be at least 1 ft. (305 mm) away from
another exhaust termination. An exhaust termination
must also be at least 2 ft. (610 mm) away from an inside
corner. (If the adjacent wall is less than 2 ft. (610 mm)
of length, the minimum required distance away from the
inside corner will be equal to the length of that adjacent
wall.)

.

(610 mm) min.

.

(305 mm) min.

Inside

Combined
intake and
exhaust

. (305 mm)

min.

corner

-Case 1-

For direct-vent sidewall terminations
that use two separate penetrations
for the intake and exhaust, keep the
termination clearances shown in the
diagrams on the right.

For multiple, direct-vent sidewall terminations that
combine the intake and exhaust into a single penetration,
space each direct-vent termination at least 1 ft. (305 mm)
away from each other, no matter the orientation. A direct­vent termination must also be a least 2 ft. (610 mm) away
from an inside corner. (If the adjacent wall is less than
2 ft. (610 mm) of length, the minimum required distance
away from the inside corner will be equal to the length of
the adjacent wall.

Exhaust

Intake

min.

Exhaust

A

Intake

A

-Case 2-

A: 0.5ft. (159 mm)
The clearance of A is recommended on the basis of the structure of the micro-boiler.

WWW.HYDRO-SHARK.COM HYDROSHARK 120 | 19

Exhaust

Intake

(305 mm)

min.

Exhaust

Intake

A

* 3 inch and 4 inch vent installations only

A

Exhaust

.(610 mm)

min

-For rooftop terminations-

Installation - Venting

Exhaust and/or direct-vent sidewall terminations should
be at least 2 ft. (610 mm) away from an opposite surface
/ wall. Do not place the termination directly in front of an
opening into a building.

Intake air

Intake air

B

Exhaust

Gas

B

B

A

Exhaust gas

A: Exhaust terminations must be at least 1 ft. (305 mm) away from any obstructions.
B: Intake terminations must be at least 1 ft. (305 mm) away from any obstructions.

A

Please follow all local and national codes in regards to proper termination
clearances. In the absence of such codes, the clearances above can be used
as guidelines. Local codes supersede these guidelines.

CAUTION

20 | HYDROSHARK 120 WWW.HYDRO-SHARK.COM