Rheem RCBH-L199i Guide

USER’S INFORMATION MANUAL

WARNING: If the information in this manual is not followed exactly, a re or

explosion may result causing property damage, personal injury, or loss of life.

Do not store or use gasoline or other ammable vapors and liquids or other

combustible materials 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 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 cannot reach your gas supplier, call the re department.

Installation and service must be performed by a qualied licensed installer,

service agency or the gas supplier.

HIGH EFFICIENCY CONDENSING

COMBI BOILER

99,000 & 125,000 Btu/hr Models

160,000 & 199,000 Btu/hr Models

(Natural Gas or Propane)

USER’S INFORMATION MANUAL

COMBI BOILERS 99 -125 -160 -199

SAFETY CONSIDERATIONS

Installation, start-up and servicing of this unit must be done with due care

and attention, and should only be performed by competent, qualied,

licensed and trained heating technicians. Failure to read and comply with

all instructions and applicable national and local codes may result in

hazardous conditions that could result in property damage and injury to

occupants which in extreme cases might result in death.

This product burns gas to produce heat. The appliance must be properly

installed, operated, and maintained to avoid exposure to appreciable levels

of carbon monoxide and the installer is required to conrm that at least one

carbon monoxide alarm is installed in the living space before the appliance

is put into operation. It is important for the carbon monoxide alarms to

be installed, maintained, and replaced following the alarm manufacturer’s

instructions and applicable local codes.

HAZARDS & PRECAUTIONS

WARNING

If the information in this

manual is not followed

exactly, a re or explosion

may result causing property

damage, personal injury, or

loss of life.

CAUTION

Points out a potentially

hazardous situation which

must be avoided to prevent

possible moderate injury and/

or property damage

NOTE

Points out installation,

maintenance and operation

details that will result in

enhanced e󰀩ciency, longevity

and proper operation of your

boiler.

DANGER

Points out an imminently

hazardous situation which

must be avoided in order to

prevent serious injury or

death.

BEST PRACTICES

Points out recommendations

for better installation.

WARNING

Points out a potentially

hazardous situation which

must be avoided to prevent

serious injury or death.

USER’S INFORMATION MANUAL

COMBI BOILERS 99 -125 -160 -199

CONTENTS

UNIT’S CONTROLLER .........................................6

INSTALLER INTERFACE ........................................6

Turning appliance on/o󰀨 ................................................6

Programming mode....................................................7

TANKLESS DOMESTIC HOT WATER MODES ........................9

Tankless domestic hot water - standard and eco comfort modes .................9

SPACE HEATING.............................................10

Overview ...........................................................10

SEQUENCE OF OPERATION ....................................11

LIGHTING & SHUTTING DOWN THE UNIT ........................12

MAINTENANCE..............................................13

General care ........................................................13

Regular maintenance .................................................13

Annual maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Relief valve - maintenance and testing ....................................14

Domestic hot water system .............................................14

SERVICE RECORD ...........................................15

USER’S INFORMATION MANUAL

COMBI BOILERS 99 -125 -160 -199

WARNING

Ensure that any direct “city

ll” water connections are

left in the closed position to

minimize exposure to leaks

and ooding.

WARNING

HOT WATER CAN SCALD!

Water Temperatures over

125°F / 52°C can cause severe

burns instantly or death from

scalds.

Children, disabled, and

elderly are at highest risk of

being scalded.

• Never leave them

unattended in or near the

shower, bathtub or sink.

• Never allow small children

to use a hot water faucet or

draw their own bath.

To avoid any potential scald

hazard or if codes require

specic water temperatures

at the hot water faucet, the

installer may:

•Install a eld supplied

thermostatic mixing valve at

this appliance and ensure it

is working properly.

AND

•Set the thermostatic

mixing valve to the lowest

temperature which satises

your hot water needs.

TO AVOID INJURY:

•Feel and adjust water

temperature before bathing

or showering.

•Water drained from the

system drain valve may be

extremely hot.

•Make sure all connections

are tight.

•Direct water ow away from

any person.

WARNING

Do not use this unit if any

part has been under water.

Immediately call a qualied

service technician to inspect

the unit and to replace any

part of the control system and

any gas control that has been

under water.

DANGER

If overheating occurs or the

gas supply fails to shut o󰀨, do

not turn o󰀨 or disconnect the

electrical supply to the pump.

Instead shut o󰀨 the gas

supply at a location external

to the appliance

WARNING

Keep unit area free and clear

of combustible materials,

gasoline, and other ammable

vapors and liquids.

WARNING

Combustion air must not be

drawn from areas containing

corrosive air from swimming

pools or spas, including air

directly next to outdoor pools

and spas.

WARNING

The unit must not be exposed

to water leaks from piping

or components located

overhead. This includes

condensation dropping from

un-insulated cold water lines

overhead.

WARNING

In areas of high snow fall,

users must check side wall

exhaust vent and air intake

terminations on a regular

basis to ensure blockage

does not occur.

WARNING

Bacteria growth can develop

in domestic hot water

tanks and indirect water

heaters if the minimum

water temperature is not set

high enough to prevent its

growth. It is adviced to set It is adviced to set

the temperature above 131°F the temperature above 131°F

/ 55°C/ 55°C

NOTE

This unit is equipped with a This unit is equipped with a

blocked vent shut-o󰀨 system blocked vent shut-o󰀨 system

that closes the gas supplythat closes the gas supply

when it detects an irregularwhen it detects an irregular

venting condition. If the vent venting condition. If the vent

blockage is easily accessible blockage is easily accessible

and removable, remove it. If and removable, remove it. If

the unit is in a fault, resetthe unit is in a fault, reset

the unit by touching the the unit by touching the

wrench for 2 seconds. If thewrench for 2 seconds. If the

vent blockage is not easily vent blockage is not easily

removable, contact a qualied removable, contact a qualied

service agency to inspect and service agency to inspect and

repair the system.repair the system.

USER’S INFORMATION MANUAL

COMBI BOILERS 99 -125 -160 -199

BURN

HOT

DANGER

° Water temperature over 125°F (52°C) can cause severe burns instantly

or death from scalds.

° Children, disabled, and elderly are at highest risk of being scalded.

° See instruction manual before setting temperature at water heater.

° Feel water before bathing or showering.

° Temperature limiting valves are available, see manual.

WARNING

CAUTION

WATER HEATER INSTALLATION GUIDELINES

ADJUSTABLE TEMPERATURE SETTING

°Hotter water increases the risk of scald injury. Before changing the temperature setting, see

instruction manual.

°This unit must be installed in accordance with local codes, if any; if not follow the National

Fuel Gas Code, ANSI Z223.1/NFPA 54, or the Natural Gas and Propane Installation Code,

CAN/CSA B149.1, as applicable.

°Failure to correctly install and operate this appliance can result in severe personal injury

or death.

°The unit shall have a pressure relief valve installed within 6"[152mm] of the DHW HOT

outlet connection.

Refer to the unit’s User Manual before operating the relief valve.

°The unit requires a pressure relief valve identiﬁed with the ASME V or HV symbol and

set to relieve at or below 150psi of domestic water pressure and a minimum relieving capacity

of 199,000 Btu/hr with 3/4"NPT threads. For safe operation of the unit, the relief valve

must not be removed from its designated point of installation or plugged.

°Read and follow warnings and instructions.

Touch the panel above the white dot , then touch the Faucet . Adjust the water temperature

with the Plus + and Minus – then touch the Return button to save the changes.

TIME/TEMPERATURE RELATIONSHIP IN SCALDS

WATER TEMPERATURE TIME TO PRODUCE A SERIOUS BURNTIME TO PRODUCE A SERIOUS BURN

120°F (49°C) More than 5 minutes

125°F (52°C) 1 ½ to 2 minutes

130°F (54°C) About 30 seconds

135°F (57°C) About 10 seconds

140°F (60°C) Less than 5 seconds

145°F (63°C) Less than 3 seconds

150°F (66°C) About 1 ½ seconds

155°F (68°C) About 1 second

Table courtesy of Shriners Burn Institute

USER’S INFORMATION MANUAL

COMBI BOILERS 99 -125 -160 -199

UNIT’S CONTROLLER

ICON FUNCTION

ANumerical Display Main Display

BPlus & Minus Temperature Adjustment

CFlame Burner ON Indicator

DWhite Dot Power ON Indicator

EFaucet DHW Indicator

FRadiator Heating Indicator

GWrench Service/Reset

HReturn Arrow Enter/Save

INumerical Display Service Display

Table 1: Controller Indicators and Buttons

INSTALLER INTERFACE

Turning Appliance ON/OFF

To turn on the unit, touch the area above the small white dot for 2 seconds. Now

only the white dot is illuminated.

To turn o󰀨 the unit, touch the area above the small white dot for 2 seconds. A dash

appears to the right and the space heating pressure displays to the left.

USER’S INFORMATION MANUAL

COMBI BOILERS 99 -125 -160 -199

Programming Mode

Adjusting the space heating water temperature

To access the main menu:

1. Touch the area above the white dot.

2. Touch the Radiator button.

3. To change the space heating target temperature, touch the Plus or Minus

buttons.

●To save the changes, touch the Return button.

●To exit without saving the changes, touch the area above the dot.

“P” to the right of the screen indicates that the changes have been saved.

USER’S INFORMATION MANUAL

COMBI BOILERS 99 -125 -160 -199

Adjusting the domestic hot water Temperature

To access the main menu:

1. Touch the area above the white dot.

2. Touch the Faucet button.

3. To change the DHW target temperature, touch the Plus or Minus buttons.

●To save the changes, touch the Return button.

●To exit without saving the changes, touch the area above the dot.

“P” to the right of the screen indicates that the changes have been saved.

NOTE

The domestic hot water

thermostat is adjusted to its

lowest temperature position

when shipped from the

factory. It’s recommended to

set the domestic hot water

thermostat to 120°F/49°C as

an initial setting and further

adjust as required. For

energy e󰀩cient operation,

this setting should be set

as low as practical for the

consumer’s needs.

USER’S INFORMATION MANUAL

COMBI BOILERS 99 -125 -160 -199

TANKLESS DOMESTIC HOT WATER

MODES

Tankless Domestic Hot Water - Standard and ECO

Comfort Modes

Standard Mode (OFF): The unit will respond to a call for domestic hot water as

a priority over the space heating demand. When the domestic hot water demand

is satised the unit will return to the space heating load if the load is still calling.

The heat exchanger will not maintain its domestic hot water temperature between

demands for hot water.

Comfort Mode (ON): The heat exchanger is maintained at the DHW

temperature.

ECO Comfort Mode (ECO): This mode operates like the Comfort Mode but has

the added advantage of learning when the domestic hot water is used. During the

low use periods, the heat exchanger is allowed to cool.

To switch between the 3 modes:

1. Touch the area above the white dot.

2. Touch the Faucet button twice.

3. To change the DHW mode, touch the Plus or Minus buttons.

USER’S INFORMATION MANUAL

COMBI BOILERS 99 -125 -160 -199

●To save the changes, touch the Return button.

● To exit without saving the changes, touch the On/O󰀨 button.

“P” to the right of the screen indicates that the changes have been saved.

SPACE HEATING

Overview

The Combi boiler is designed to be installed in a primary/secondary type

piping system. The unit comes complete with a factory-installed pump, which is

designed to circulate heating system water through the unit’s heat exchanger and

primary loop piping only. The building’s distribution piping system may require a

dedicated pump or pumps to circulate space heating water through the heating

system. The unit can operate a separate building pump (120V 1.0 AMP max).

Zoning of the space heating system can be accomplished many ways. Several

control packages are available from your local wholesaler and o󰀨er an easy

method of connecting the zoning system to the boiler.

The unit supplies heat to the space using an outdoor reset function. With an

outdoor sensor installed, the unit automatically adjusts its space heating water

temperature based on the parameters programmed into the unit. See separate

controller manual for parameter information. If the Outdoor sensor is not installed,

the unit uses the temperature set in the “User Set Up” menu “Boiler Supply

Temperature” to supply hot water to the space heating system.

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