Navien NCB-190/060H Leitfaden

WARNING

If the information in these instructions is not followed exactly, a fire or explosion may result,

causing property damage, personal injury, or death.

Do not store or use gasoline or other flammable vapors and liquids in the vicinity of

this or any other appliance.

WHAT TO DO IF YOU SMELL GAS

●Do n

ot try to light any appliance.

●Do not touch any electrical 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 can

not reach your gas supplier, call the fire department.

Installation and service must be performed by a qualified installer, service

agency or the gas supplier.

NSF/ANSI 372

Keep this manual near this boiler for future reference

whenever maintenance or service is required.

* The wetted surface of this product contacted by consumable water

contains less than one quarter of one percent (0.25%) of lead by

weight.

User’s Information Manual

NCB-H Condensing Combi-Boilers

Model NCB-190/060H

NCB-190/080H

NCB-240/110H

NCB-240/130H

NCB-250/150H

2Contents

Contents

1. Safety Information 3

2. About the Boiler 7

2.1 Description of the Boiler 7

2.2 Parts of the Boiler 7

2.3 The Front Panel 8

3. Operating the Boiler 10

3.1 Turning the Boiler On or Off 10

3.2 Adjusting the Temperature 10

3.3 Accessing Basic Menu Items 12

3.4 Resetting the Boiler 13

4. Maintaining the Boiler 14

4.1 Cleaning the Boiler 14

4.2 Draining the Boiler 14

4.3 Cleaning the Domestic Cold Filter (DHW

side) 15

4.4 Cleaning the Heating Return Water Filter

(Space Heating side) 16

4.5 Cleaning the Air Intake Filter 16

4.6 Protecting the Boiler from Freezing 18

4.7 Maintenance Schedules 18

5. Troubleshooting 24

5.1 Solving Basic Problems 24

5.2 Understanding Error Codes 25

3Safety Information

The following safety symbols are used in this

manual. Read and follow all safety instructions in

this manual precisely to avoid unsafe operating

conditions, fire, explosion, property damage,

personal injury, or death. Keep this manual for

future reference.

DANGER

Indicates an imminently hazardous situation

which, if not avoided, could result in severe

injury or death.

WARNING

Indicates a potentially hazardous situation

which, if not avoided, may result in injury or

death.

CAUTION

Indicates a potentially hazardous situation that,

if not avoided, could result in property damage.

DANGER

If you do not follow these instructions exactly,

a fire or explosion may result causing property

damage, personal injury or loss of life.

A. This appliance does not have a pilot. It is

equipped with an ignition device which

automatically lights the burner. Do not try

to light the burner by hand.

B. BEFORE OPERATING smell all around the

appliance area for gas. Be sure to smell next

to the floor because some gas is heavier

than air and will settle on the floor.

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 fire department.

●Do not return to your home until

authorized by your gas supplier or the

fire department.

C. Do not use this appliance if any part has

been under water. Immediately call a

qualified service technician to inspect the

appliance and to replace any part of the

control system and any gas control which

has been under water.

1. Safety Information

4Safety Information

WARNING

●Shut off the gas supply if the boiler is

damaged.

Have your installer or plumber show you

the location of the gas shut off valve and

demonstrate how to close the valve. If the

boiler is damaged as a result of overheating,

fire, flood, or any other reason, close the

manual shut off valve and do not operate the

boiler again until it has been inspected by a

qualified technician.

●Do not store or use gasoline or other

flammable liquids near this boiler.

Doing so may result in fire or explosion.

●Do not place combustibles, such as

newspapers or laundry, near the boiler or

venting system.

Doing so may result in a fire.

●Do not place or use hair sprays, spray

paints, or any other compressed gases near

the boiler or venting system, including the

vent termination.

Doing so may result in fire or explosion.

●Do not operate the boiler with the front

cover opened.

Doing so may result in fire or carbon

monoxide (CO) poisoning, which may result

in property damage, personal injury, or death.

●Do not operate this boiler without proper

venting.

Doing so may result in fire or carbon

monoxide (CO) poisoning, which may result

in property damage, personal injury, or death.

Inspect the vent termination and air intake

supply annually to ensure proper operation

of the boiler. Turn off and discontinue use

of the boiler if any of the vent pipes, vent

elbows, or intake pipes are damaged in any

way, separated at a joint, or show evidence of

corrosion, rusting, or melting.

WARNING

●Do not touch the power cord or internal

components of the boiler with wet hands.

Doing so may result in electric shock.

●Do not make any electrical connections

before turning off the electrical power

supply at service entrance panel.

Doing so may result in severe personal injury

or death.

California law requires the following Prop 65

warning to be provided:

WARNING

Cancer and Reproductive Harm -

www.P65Warnings.ca.gov

5Safety Information

DANGER

HOT

BURN

To prevent burns:

●Use the lowest operating temperature setting

necessary to provide comfortably-hot water.

●If your household has children or elderly or

disabled residents, consider using a lower

temperature setting.

●Do not leave children, the elderly, or disabled

persons unsupervised.

●Do not allow small children to play

unsupervised in the bathroom.

●Do not allow anyone to change the water

temperature while hot water is running.

●Read all the instructions in this manual

carefully before changing the temperature

setting.

●Feel the water before using it on children, the

elderly, or the disabled.

●If it is necessary to set the water temperature

above 125°F (52°C), consider installing a

thermostatically-controlled mixing valve

or temperature-limiting valve. Contact a

licensed plumber or your local plumbing

authority for more information.

CAUTION

●Do not attempt to repair or replace any

part of the boiler, unless it is specifically

recommended in this manual.

For all other service, contact an authorized

technician or licensed professional. Improper

adjustments, alterations, service, or

maintenance may lead to property damage,

personal injury, or death and will void your

warranty.

●Do not operate the boiler if you feel

something is wrong with it.

Doing so may result in product damage or

personal injury.

●Do not allow children to operate or access

the boiler.

Doing so may result in product damage or

personal injury.

●Do not turn on the boiler unless the water

and gas supplies are fully opened.

Doing so may damage the boiler.

●Do not use this boiler for anything other

than its intended purpose, as described in

this manual.

●Do not remove the front cover unless

the power to the boiler is turned off or

disconnected.

Failure to do so may result in electric shock.

●When servicing the controls, label all wires

prior to disconnecting them.

Failure to do so may result in wiring errors,

which can lead to improper or dangerous

operation.

●Do not use unapproved replacement or

accessory parts.

Doing so may result in improper or dangerous

operation and will void the manufacturer’s

warranty.

●Do not place anything in or around the vent

terminals, such as a clothes line, that could

obstruct the air flow in or out of the boiler.

●This boiler has been approved for use in the

USA and Canada only.

Using the boiler in any other country will void

the manufacturer’s warranty.

●Should overheating occur or the gas supply

fail to shut off, turn off the manual gas

valve to the appliance.

6Safety Information

DANGER

This boiler’s DHW temperature is set to 120°F

(49°C) at the factory for your safety and comfort.

Increasing the temperature increases the risk of

accidental scalding. Water temperatures at or

above 125°F (52°C) can cause instant scalding,

severe burns, or death. Before you decide

to change the temperature setting, read the

following charts carefully.

Water

Temperature

Time in which a young child can

suffer a full thickness

(3rd degree) burn

160°F (70°C) Less than 1 second

140°F (60°C) 1 second

130°F (55°C) 10 seconds

120°F (49°C) 10 minutes

100°F (37°C) very low scald risk

7About the Boiler

2.1 Description of the Boiler

The Navien NCB-H boiler is available in 5 models:

NCB-190/060H, NCB-190/080H, NCB-240/110H,

NCB-240/130H and NCB-250/150H.

The main features are as follows:

●Power Interruption: When the power is restored

after a power failure, the boiler will automatically

start and return to normal operation. A manual

reset is not required.

●Freeze Protection: A sensor inside the boiler

automatically detects the temperature and,

if necessary, initiates a safety heating cycle to

prevent internal equipment damage due to

freezing temperatures.

●Short-Circuit Protection: Any short-circuit

occurring in the boiler’s electrical circuit

immediately blows the internal glass fuses and

automatically cuts off the gas supply.

●Lightning Protection: Each boiler is specially

grounded, both internally and externally, to

protect against lightning strikes.

●Carbon Monoxide Protection: The boiler is

designed to maintain a safe air-to-gas ratio and

combustion rate. This function is continuously

monitored by the boiler’s air ratio control module.

●Auto Fan Detection: The rotation of the fan is

automatically detected and controlled. Fan failure

will stop the operation of the boiler.

●Boiling Prevention: Excessive temperatures will

automatically stop the boiler.

2.2 Parts of the Boiler

2.2.1 Front View

Exhaust

Gas Vent

Combustion

Air Intake

2.2.2 Bottom View

12.8” (325 mm)

3.5”

(88 mm) 3.3”

(85 mm) 2.9”

(74 mm)2.5”

(63 mm)

2.7”

(68 mm)

17.3” (440 mm)

9.6” (244 mm)

2.4” (60 mm)

A G

CFD

2.7”

(69.5 mm)

#Description

AHeating Supply

BDomestic Hot

CGas Connection

DDomestic Cold

EAuto Feeder Inlet (Make-up Water)

FCondensate Outlet

GHeating Return

2. About the Boiler

8About the Boiler

2.3 The Front Panel

The front panel allows you to adjust the

temperature and view the operating status or error

codes. Remove the protective sheet from the front

panel before using it.

2.3.1 Icons and Digital Display

The icons and digital display on the front panel

provide important information required for the

boiler’s operation. Refer to the following table for

detailed information.

Outdoor reset

Displayed when the Outdoor

Reset feature is enabled.

Combustion

Displayed when the burner is

combusting.

System check or error

Displayed when an error is

detected or a system check is

needed due to service alarm

overtime.

Anti-freeze

Displayed when the boiler

is operating in anti-freeze

mode.

Auto air purge

Displayed when an auto air

purge is being performed.

Cascade/Main mode

Flashes when configuring a

cascade system. Turns on solid

if the boiler is set as the Main

unit in a cascade system.

DHW Operation

Displayed when the pre-

heating feature is activated.

●Always on ( ), Intelligent

(), Weekly ( ),

Aquastat ( ), Manual ( )

AHU connection

Displayed when the AHU

connection settings are

enabled. If there is a problem

or a connection is being

made, this icon will blink.

DHW demand

Indicates that DHW

demand is present.

DHW set temperature

Displays the currently set

DHW temperature.

System pressure

Displays the internal water

pressure of the boiler

system.

Outdoor temperature

Displays the outdoor

temperature.

Space heating set

temperature

Displays the currently

set space heating

temperature.

Space heating demand

Indicates the space heating

demands from thermostats

1, 2, and 3.

9About the Boiler

2.3.2 Buttons and Command Dial

Using the buttons and the Command dial ( ) on

the front panel, you can turn on or off the boiler,

monitor the current operation status, and set the

values required for the boiler’s operation, such as

space heating and DHW supply temperatures. Refer

to the following table for detailed information.

Back button

Return to the previous menu

or screen.

bMode button

Enter the boiler’s main menu.

cPower button

Turn on or off the boiler. d

Command dial

Rotate to switch between

menu items, or to increase/

decrease values.

Press to make a selection or

to confirm changes.

10 Operating the Boiler

WARNING

Follow the instructions below to avoid unsafe

operating conditions that could cause property

damage, severe personal injury, or death.

●Ensure that the boiler is filled with water

before turning it on.

●If overheating occurs or the gas supply fails to

shut off, shut off the gas supply to the boiler

by using the manual gas valve.

●If any part of the boiler has been submerged

in water, do not use this appliance and

immediately call a qualified service

technician. The boiler must be replaced.

3.1 Turning the Boiler On or Off

To turn the boiler on or off, press the Power button

().

When the power is on, the boiler automatically

enters normal operation mode, and the boiler’s

operating conditions are displayed on the screen.

Note The boiler status icons remain displayed

when the boiler is turned off.

3.2 Adjusting the Temperature

3.2.1 Adjusting the Space Heating

Temperature

To adjust the heating temperature:

1. In normal operation mode, rotate the Command

dial ( ) . The space heating temperature ( ) is

highlighted on the screen.

2. Press the Command dial ( ) to select the space

heating temperature ( ). The highlighted

section will flash.

3. Rotate the Command dial ( ) to the right or

left to increase or decrease the temperature.

4. Press the Command dial ( ) to confirm the

new temperature.

5. Press the Back button ( ) to return to normal

operation mode, or rotate the Command dial

() to adjust other operation conditions.

3. Operating the Boiler

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