THE HEATING BOX Installation Manual and Owner’s Guide

Model KD-HBO100 & KD-HBC100

* KD-HB100 (Open-Loop System) * KD-HBC100 (Close-Loop System)

Automatic Hot Water Management System

A Combination System for Domestic Water and Space Heating KyungDong America, Inc.

Toll Free 800 519-8794 www.aqenergy.com

Table Contents

SAFETY INSTRUCTIONS ................................................................................... 3SAFETY INSTRUCTIONS

.................................................................................................. 4................................................................................... 3

INTRODUCTION INSPECT SHIPMENT ................................................................................ 4

.................................................................................................. 4INTRODUCTION

............................................................................................... 5................................................................................ 4

SPECIFICATIONS INSPECT SHIPMENT

INSTALLATION .................................................................................................... 6............................................................................................... 5SPECIFICATIONS

INSTALLATION LOCATIONINSTALLATION

...................................................................... 6 .................................................................................................... 6

INSTALLING THE HEATING BOXINSTALLATION LOCATION

............................................................. 6 ...................................................................... 6

PIPING CONNECTIONS............................................................................ 7 INSTALLING THE HEATING BOX............................................................. 6

WATER FILLING AND PURGING SYSTEMPIPING CONNECTIONS

.............................................. 8 ............................................................................ 7

CLEARANCE REQUIREMENTS................................................................ 9WATER FILLING AND PURGING SYSTEM.............................................. 8

THE HEATING BOX AS A PRIMARY LOOPCLEARANCE REQUIREMENTS

........................................... 10 ........................................................................................................... 9

APPLICATIONS.................................................................................................. 10THE HEATING BOX AS A PRIMARY LOOP 10

DOMESTIC HOT WATER SUPPLYAPPLICATIONS

......................................................... 10 .................................................................................................. 10

IN-FLOOR RADIANT FLOOR HEATING SYSTEMDOMESTIC HOT WATER SUPPLY

.................................. 11......................................................... 10

FAN-ASSISTED HYDRO HEATING SYSTEM......................................... 1IN-FLOOR RADIANT FLOOR HEATING SYSTEM.................................. 1

21

SNOW MELTING SYSTEM ..................................................................... 1FAN-ASSISTED HYDRO HEATING SYSTEM......................................... 1

32

SPA WATER HEATING SYSTEMSNOW MELTING SYSTEM

............................................................ 1..................................................................... 1

43

WIRING............................................................................................................... 1SPA WATER HEATING SYSTEM............................................................ 1

44

IN-FLOOR RADIANT FLOOR/BASEBOARD HEATING SYSTEM WIRING

......... 1............................................................................................................... 1

54

FAN-ASSISTED HYDRO HEAITNG SYSTEM......................................... 1IN-FLOOR RADIANT FLOOR/BASEBOARD HEATING SYSTEM ......... 1

55

OPERATION....................................................................................................... 1FAN-ASSISTED HYDRO HEAITNG SYSTEM......................................... 1

65

IMPORTANT SET-UP INSTRUCTIONS OPERATION

................................................. 1....................................................................................................... 1

66

DOMESTIC HOT WATER SUPPLY ........................................................ 1IMPORTANT SET-UP INSTRUCTIONS ................................................. 1

86

SPACE HEATING ................................................................................... 1DOMESTIC HOT WATER SUPPLY ........................................................ 1

98

FREEZING PROTECTION SPACE HEATING

...................................................................... 1................................................................................... 1

99

LADDER DIAGRAM............................................................................................FREEZING PROTECTION

20...................................................................... 19

DESIGN REFERENCE FOR HEAT LOSS CALCULATIONLADDER DIAGRAM

.................................................................................................................

2020

TROUBLESHOOTING GUIDE............................................................................ 23TROUBLESHOOTING GUIDE............................................................................ 23DESIGN REFERENCE FOR HEAT LOSS CALCULATION..................... 20

PARTS LISTS ..................................................................................................... 24PARTS LISTSMODEL KD-HBO100................................................................................ 24MODEL KD-HBO100

..................................................................................................... 24

MODEL KD-HBC100................................................................................ 26MODEL KD-HBC100................................................................................ 24

LIMITED WARRANTY ........................................................................................ 2................................................................................ 2

8 68 LIMITED WARRANTY ........................................................................................ 2

KyungDong America, Inc. reserves the right to change specifications and/or designs without prior notice in anytime and without incurring obligations. KyungDong America, Inc. reserves the right to change specifications and/or designs without prior notice in anytime and without incurring obligations.

2

This is the safety alert symbol. Recognize this symbol as an indication of Important Safety Information! This symbol alerts you to potential hazards that can kill or hurt you and others.

Safety Instructions – Important Information Please read prior to installation

• Please check specifications of the Heating Box to make sure it is right for

your application specifications.

• Please keep this manual in safe place for future reference.

• The Heating Box must be installed and serviced by a licensed contractors

or/and a professional service technician following national building code,

national electric code and all applicable local codes. Improper installation

and/or operation and/or installed by unqualified person, the warranty will be

voided by the manufacturer. Please refer to the warranty section on page 26.

• Please follow each manufacturer’s installation instructions for different

appliances for your other applications used conjunction with our product such

as space heating systems and water heating systems.

• Be sure your appliance is properly installed in accordance with local codes

and the provided installation instructions.

• Do not touch the system with wet hands.

• Do not pour water directly to the system for any purpose. Electric shock may

occur and serious body and/or property damages can result.

• Water temperatures above 125 °F (50 °C) can cause severe burns or death

from scalding.

• Do not store or use gasoline or other flammable vapors or liquids or other

combustible materials in the vicinity of this or any other appliances. To do so

may result in an explosion or fire.

3

Introduction

Thank you for purchasing the Heating Box Model KD-HBO100/KD-HBC100. This Heating

Box provides a combination system (heat potable water and space) with just one heat

source in convenience of simple installation. The unit consist with a high head bronze

constructed pump to circulate water and built-in priority device for more effective

distribution in domestic hot water.

The Heating Box can be used with conventional tank type water heaters, on-demand

tankless water heaters or any hot water heating systems as a heat source. The Heating

Box can be associated with applications like in-floor space heating system (radiant

heating system) and fan assisted hydronic space heating system without interrupting

domestic hot water supply and that means no more temperature fluctuations.

Please read the installation manual completely before attempting installation. Understand

how the system operates and installation recommendations before beginning installation.

Most of the questions that you will have will be answered in the manual. If you have any

questions, please review the installation manual or contact manufacturer directly at 800-

519-8794.

Please make sure to fill out your product warranty card and return the original form to

KyungDong America, Inc. within 30 days of purchase.

Important to Owner: These instructions should be carefully read and kept near product, for

future reference. While these instructions are addressed primarily to the installer, useful

maintenance information is included. As expressed in product warranty, KyungDong

America, Inc. will not be billed for any structural damage due to failure to follow these

installation requirements.

Inspect Shipment

Description Picture Quantity

Manual

1

Bracket

1

Introduction

4

Specifications

Model KD-HBC100

5

Model KD-HBO100 Model KD-HBC100

Open system Close system

Minimum Flow Rate 0.5 GPM 0.5 GPM

(activate priority device)

Minimum Water Pressure 7 PSI 7 PSI

Hot and Cold Water Connections 3/4" NPT 3/4" NPT

Heat Source Supply & Return 3/4" NPT 3/4" NPT

Space Heating Supply & Return 3/4" NPT 1” NPT

Flat Heat Exchanger 80,000 Btu/Hour Each, Not Applicable

(BTU/Hour) each Total 160,000 BTU/Hour

Expansion Tank 1.8 Gallons 1.8 Gallons

120VAC, 60 Hz, Max. 5A, 120 VAC,60 Hz, Max 10A, Electricity

Normal 2A Normal 4A

Physical Size (W x H x D) 15” x 25” x 10” 20” x 28” x 10”

Installation

The Heating Box™ Model KD-HBO100 is an open-loop system. If your application

requires a close-loop system, you can add an extra heat exchanger in between

systems to separate potable and space heating water; otherwise you can use the

close-loop system, the Heating Box™ Model KD-HBC100.

WARNING The hot water coil or all radiant water lines must be purged of air before the hot water pump can be energized. Failure to purge the water system of air can result in damage to the pump.

Installation Location

• Locate the unit near the heat source and the space heating appliance such

as in-floor radiant heating manifolds or a hydro space heating air handler.

• Extra care should be taken to avoid placing the product near noise sensitive

location such as living areas.

• For ease of installation, top of the system should be installed at eye level

and/or bottom of the system should be no less than 3 feet off from the floor.

6

Installing the Heating Box

1. To mount on the fire rated wall, locate wood or metal studs to properly hold

the weight of the unit.

2. Drill a single screw hole for at least 2”; it should be for 16” OC. Insert and

tighten the screw and hang the unit by the upper wall mounting bracket.

3. Determine the positions for remaining four screws (two for the top bracket

and two for the bottom), and remove the unit to drill holes.

4. Hang the unit again by the first screw, and then insert and tighten the

remaining four screws.

5. Make sure the unit is installed securely so that it will not fall or move due to

vibration or earthquakes.

Piping Connections

• Verify that matched pairs of supply and return pipes are connected to the

appropriate outlets and inlet to the Heating Box.

• From the Heating Box, the piping labeled “To Water Heater Inlet” needs to be

connected to the Cold Water Connection of the heat source and the piping

labeled “To Water Heater Outlet” needs to be connected to the Hot Water Connection of the heat source.

• Connect the City Water Supply Line to the piping labeled “To City Water” and

Domestic Hot Water Supply Line to “Hot Water Supply”.

• From the space heating appliance, connect its Inlet to the Heating Box’s

piping labeled “To Space heat supply (IN)” and connect its Return Line to the

piping labeled “To Space heat Return (OUT)”.

• Refer below figure for the Radiant Heating Manifold.

7

To water heater Outlet To City water To Space heat Return (out)

Hot water supply To water heater Inlet To Space heat supply (IN)

120 VAC

To Space heat Return (out) To City water

120 VAC

To water heater Outlet To water heater Inlet Hot water supply To Space heat supply (IN)

Radiant Heating

Manifold

8

• Make sure all electrical power is turned off before filling water to the system.

• Close all domestic hot water faucets.

• Open main cold water supply valve and purge valve slowly. If water leaks

from the purging valve, close the valve immediately.

• Before connecting the electrical wires, strongly recommend to do water

leaking test with/without a pressurizing pipe system. When the system tests

with pressurized air, the test pressure should not exceed 50 PSI. Before

testing, check the pressure relief valve and see if it is in the test pressure

range. The shut off valve to the expansion tank must be closed to prevent

damages to it. After the test, open the shut off valve to the expansion tank.

• Turn on the power to both the unit and the thermostat for heating.

• The Heating Box will start circulate water. Please check the purging valve to

see whether there is any air left in the system.

• Above steps should be repeated until there is no air left inside the piping

system.

WARNING The expansion tank comes pre-pressurized at 50 PSI (4 Kgf). If necessary, adjust the pressure in the expansion tank to the anticipated system operating pressure.

* Maintain clearances in accordance with local installation codes and other appliances.

Piping Side 12”

Front (Maintenance Space) 24”

Back 1” (Bracket included)

Non Piping Side 1”

Water Filling and Purging System

Clearance Requirements

9

The Heating Box as a Primary Loop

If separate secondary circulator has to be used in the system, the secondary

circulator can be connected to the External Pump Port from the control box of the

Heating Box to properly relay its power as an independent circuit (activating Port,

dip switch No. 5 must be ON position). When room thermostat is ON, secondary

circulator is also ON continuously. The control relay activates the primary circulator

until it turns off the heating mode. When primary loop temperature gets close to

the default set temperature, primary loop circulator will stop and the secondary

circulator will continue to operate. When primary loop temperature falls below 5°F

from the default set temperature, the primary circulator will start operating again to

maintain the default set temperature range. Radiant Heating

Manifold

Applications

There are many applications you can apply with the Heating Box including radiant

in-floor, radiant baseboard, hydronic air handlers, snow melting system and more.

Domestic Hot Water Supply

The Heating Box always prioritizes domestic hot water supply in operations. The

Heating Box has a built-in priority switch to prioritize domestic hot water supply.

For an example when it detects a demand from the domestic side while the unit is

operating for the space heating side, it quickly switches over from the space

heating mode to the domestic heating side by stopping a pump and/or a fan for

the air handler until domestic hot water demand stops.

10

In-Floor Radiant Space Heating System

Recommended application specifications:

1. ½” PEX or other comparable products with maximum 9” space

2. 150 ~ 350 feet tube length per loop

3. 0.75 ~ 1.25 GPM in each loop in depend on loop length

4. 6 ~ 8 Maximum loop

5. 20 °F temperature drop in each loop recommended

6. Recommended size of space is about 2000 sq ft maximum.

7. Recommended heat source (water heater) temperature is 180 °F and radiant

heating supply temperature sets between 100 ~130 °F depend on applications.

Radiant Heating Manifold

Water heater set temperatures: 140, 160, 180 °F Radiant heating supply temperatures: 120 °F

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Fan-Assisted Hydro Heating System

Recommended application specifications:

1. 2.5 ~ 5 GPM flow rate

2. 30 ~ 35 °F temperature drop at 140 °F hot water supply to the air handler

3. Maximum 5 ton air handler for 2000 sq ft space

Fan Coil

Water heater set temperature: 140, 160, 180 °F Hydro heating supply temperature: 140 °F

12

Snow Melting System Snow Melting System’s format and specifications are very similar to other heating

applications. As a working media, Glycol (propylene or ethylene glycol) can be

used and recommended to mix with water in this system.

Recommended application specifications:

1. ½” PEX or other comparable products with maximum 9” space

2. 150 ~ 250 feet tube length per loop

3. 0.75 ~ 1.25 GPM in each loop depend on the loop length

4. 6 ~ 8 Maximum loop

5. 20 °F temperature drop in each loop recommended

6. Recommended size of space is about 2000 sq ft maximum.

7. Recommended heat source (water heater) temperature is 180 °F and

radiant heating supply temperature sets between 100 ~130 °F depend on

the application.

13

Spa Water Heating System

The spa water heating system has also a similar format to the snow melting system

except the glycol mixture. It is not encouraged adding any chlorine mixture to our

system. The recommended set temperature for spa water should be below 105 °F.

Wiring

The unit must be in OFF position before connecting the electrical wires. Make sure

the circuit breaker on the distribution panel is OFF or GFI (ON/OFF switch) in

Heating Box is OFF.

From the bottom of Heating Box, connect the 120 VAC, 60Hz hot wire (Black),

neutral (White) and ground (Green) wires to the marked terminals with minimum 14

AWG. When Room Thermostat needs external 24 VAC power, Heating Box controller

provide 24 VAC power to your convenience.

Please followed wiring diagram for either radiant application.

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In-Floor Radiant Heating System and Baseboard Heating System

Fan-Assisted Hydro Heating System

15

Operation

This Heating Box is designed to make a combination system (heat potable water

and space) with just one heat source in convenience of simple installation. The

unit consist with a high head bronze constructed pump to circulate water and built-

in priority device for more effective distribution in domestic hot water. The Heating

Box will make sure there will be no interruption to your domestic hot water even

when the heating box is distributing its hot water to the space heating side. It

supports domestic side fully as soon as it detects a demand from the domestic

side and once the domestic hot water demand is done, it switches back to the

space heating side until the room temperature reaches at its setting temperature.

Also, its computer board monitors water movement and temperatures for both heat

source and space heating to make steady and optimum performances.

Important set up instructions before operating the Heating

The Heating Box can operate with any water heating systems offer in the market.

The unit recommends the incoming water temperature from the heat source to be

above 167 °F and the ideal temperature is 180 °F. After setting the temperature

from the heat source, it needs to be entered into the computer board of the

Heating Box for a proper control of each application. You need to set the

temperature of the heat source into the computer board of the Heating Box so it

control and distribute hot water to each application more effectively. In order to set

the temperature, use dip switches and they are located on the front of controller in

the Heating Box.

* Above picture shows Space Heating’s return temperature and Dip Switches.

16

ON CLOSE TYPE 1 2 3 4 Heat Source Temperature

OFF OPEN TYPE

ON EXTRA PUMP ON OFF OFF OFF 158℉(70℃) 5

OFF EXTRA PUMP OFF

ON CELSIUS(℃) ON OFF OFF 122℉(50℃) 6

OFF FAHRENHEIT(℉)

ON EXTRA POWER ON OFF ON OFF 140℉(60℃) 7

OFF EXTRA POWER OFF

OFF OFF ON 181℉(83℃) 8

17

Domestic Hot Water Supply

Whether the Heating Box is in stand by mode or space heating mode, domestic hot

water supply mode is the priority. The whole system of Heating Box does act like a

water heater. When you open a hot water tap, city water passes through the

Heating Box to a water heater and produced hot water passes through the Heating

Box to supply domestic hot water as you demand. The Heating Box monitors

incoming hot water temperature from the water heater to make sure hot water

temperature is in its setting range. The Heating Box has a built-in thermostatic

mixing valve to set the domestic hot water supply temperature. The factory set is at

120 °F for domestic hot water supply and the Heating Box tries maintain the set

temperature if incoming hot water from the water heater is above the thermostatic

mixing valve setting. Domestic hot water temperature can be easily adjusted at the

mixing valve.

Domestic Hot water temperature adjustment mixing valve

WARNING Over 122°F (50 °C) water temperature is dangerous to human body and it cause scalds and burns resulting in serious personal injury and/or death. Typical factory set temperature for domestic hot water is 110°F.

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Space Heating

Whether using radiant heating or hydronic fan coil heating, simply turn on the room

thermostat. The Heating Box controller will turn on the circulating pump and the heat

source will supply hot water to the space heating appliance. The Heating Box has a built in

thermostatic mixing valve to adjust space heating water temperature. Space heating water

temperature is typically recommended at 120 F for a radiant space heating and above 140

F for a fan coil space heating. The Heating Box continuously monitors the temperature of

space heating and returning water temperatures. The temperature of space heating side

can be adjusted from 86 F (30 C) to 140 F+ (60 C+).

In the process of initial set up for a radiant heating or a fan coil space heating, LED

from the control board will show each temperature read so you can easily identify

and adjust flow rates and temperature drops.

Freezing Protection

Space Heating

Supply Temperature adjustment

The Heating Box offers two different freezing protection systems. One

continuously check incoming city water temperature and when its temperature

reaches below 6°C (42°F), the Heating Box’s pump will turn on automatically until

the temperature of inside water pipe reaches to 20°C (68°F). It runs for about a

minute. The other function is to check ambient temperature continuously to prevent

from freezing with an optional outdoor thermostat. When the ambient temperature

reaches below 6°C (42°F), the Heating Box’s pump will turn on automatically until

the temperature of water inside the water pipe reaches to 20°C (68°F) and/or it

operates about a minute.

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Ladder Diagram

20

Design Reference for Heat Loss Calculation

This section gives a general idea to design a space heating system; it can vary

system to system and case by case.

Initial step in any heating system design is to determine the heating requirements

(same as “heat loss”) of each individual room or area. More accurate heat loss

calculation is to assure the potential of maximum energy savings and to achieve

maximum level of comfortness. By using the conventional heat loss calculations

for radiant heating design can result to over size the system.

As an example, when desired room temperature is 65 °F ~ 70 °F and ambient

temperature is -10 °F at seasonal low temperature, following resistance to heat

flow values can be used for basic heat loss calculations in each construction site.

R Factor at -10 °F Seasonal Temperature

Constructed Components and Sections

Ceiling R-19 Insulation 5

R-30 Insulation 3

R-38 Insulation 2.5

Interior above Heated Ceiling 0

Walls R-11 Insulation 8

R-19 Insulation 5

Interior wall between rooms 0

Floor Un-insulated wood frame over a crawl space 18

R-11 insulation 8

R-19 Insulation 5

R-30 Insulation 3

Un-insulated slab on grade 13

R-10 insulated slab on grade 4

Interior between heated spaces 0

Window Single Glazed 80

Double Glazed 40

Door 1-1/2” Wood 35

* More detail heat loss data can be collected from the heating design software and heating design engineers.

21

From above table, factor in areas as square feet to figure out heat loss calculation

(or required heat calculation and unit for the heat requirement is BTU/hr in each

section.

Pipe spacing in a radiant floor heating installation can directly affect the heat

output. The commonly recommended pipe spacing is 8” ~ 9” with ½” PEX pipe.

Also the typical pipe lengths are from 150’ to 450’ in each loop where pipe lengths

can be calculated (in each loop, heating area times by 1.3). For an example, if

heating area is 200 square feet, pipe lengths are approximately 260’.

Finally calculating the each loop requires flow rate divides by the total required heat

output (BTU/Hour) by 500 times the design ∆T of the system. A design ∆T of

28 °F is considered optimum for on-demand tankless water heaters. Required heat output (BTU/Hr) each loop

Flow Rate = ---------------------------------

500 X ∆T

This is very rough formula to design a radiant heating system, please consult you’re

your heating design engineer for more accuracy of your heating system design.

22

Troubleshooting Guide

Problem Check Water not hot enough The set temp of the heat source and the

heating box’s mixing valve Little or no heat from the fan coil or radiant heating

The heat source – on

Connections – could’ve been reversed

The heat source is undersized for the space

heating system

The Heating Box doesn’t response when a room thermostat is ON

Wire and the power supply of the room

thermostat

Wrong connection between the room

thermostat & the air handler

Pump keeps turn ON & OFF

Check room thermostat

Domestic hot water line is leaking

Water temp fluctuates

The set temp of the heat source is too low

The Heating Box’s pump is circulating during the cooling cycle

Heating and cooling wire on the room

thermostat could’ve been reversed or/and

two different wires are shorted

Domestic hot water line is leaking

Pump noise System may have not purged air completely

T & P or pressure relief valve on water heater weeps

In the Heating Box, the expansion tank’s

manual ball valve might have closed

Valve may be malfunction

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Parts Lists

Model KD-HBO100 Open Loop System Parts List

1

2

3

4

5

6

7

8

9

10

1112

13

14

15

1617

18

19

21

22

23

2425

26

27

29

31

32

2830

20

33

34

37

36

39

35

39

40

41

42

43

4345

44

46

47

4747

49

49

48

50

50

50

5050

52

53

53

53

51

51

51

51

51

51

51

51

51

24

Model KD-HBO100 Open Loop System Parts List

Part No. Description Part No. Description

1 Expansion Tank 27 To Domestic hot supply connect

2 Base Bracket 28 Pipe clamp

3 3-Way Valve 29 Electric junction box

4 To water heater IN connection 30 Pipe isolator clamp

5 Controller 31 Case

6 Controller Bracket 32 Front cover

7 Thermostatic Mixing valve 33 Air separator clip

8 Manual Drain Port 34 Bottom bracket

9 Air Separator 35 GFI

10 Air Separator body 36 Case clamp

11 To Space heating return line 37 Front cover clamp hook

12 Base frame 38 Drain hose

13 To Space heating supply line 39 Pump holder bolt

14 Pump Bracket 40 Pump holder nut

15 Pump Flange 41 Packing gasket

16 Circulation pump 42 Packing gasket

17 To Space heating Return (OUT) 43 O-ring

18 Expansion Tank pipe (Right) 44 O-ring

19 To Space heating Supply (IN) 45 O-ring

20 Pump gasket 46 Wire holder packing

21 To City water pipe line 47 Gasket

22 To water heater OUT connection 48 Gasket

23 Domestic priority switch 49 Gasket

24 Expansion tank pipe (left) 50 Pipe connector holder screws

25 Expansion tank manual valve 51 Screws

26 To City water connection 52 Screws

25

Model KD-HBC100 Close Loop System Parts List

2

1

3

4

5

6

6

7

8

9

10

12

13

14

15

11

16

17

1818

19

2021

22

26

23

2425

27

28

29

30

31

32

33

34

35

36

37

39

38

40

41

42

44

45

46

4748

4748

4847

49

50

4950

51

52

53

54

54

54

54

54

54

54

54

55

56

43

57

57

58

58

58

58

58

59

59

59

59

6061

63 6363

6262 62

62

62

62

62

62

65

64

65

65

65

52

26

Model KD-HBC100 Close Loop System Parts List

Part No. Description Part No. Description

1 Case 33 To Water heater OUT pipe line

2 Front cover 34 To water heater OUT connection

3 Expansion Tank 35 Domestic hot supply pipe line

4 Controller 36 Domestic hot supply pipe line

5 Controller Bracket 37 To Domestic hot supply connect

6 Circulation pump 38 Expansion Tank pipe (Right)

7 Pump gasket 39 Expansion tank pipe (left)

8 Pump Flange 40 Expansion tank manual valve

9 Pump Bracket 41 Base frame

10 Pump holder bolt 42 Base frame

11 Pump holder nut 43 Bottom bracket

12 Thermostatic Mixing valve 44 Drain hose

13 Flat Heat Exchanger 45 Drain hose

14 GFI 46 Drain hose Tee connector

15 Pressure Gage 47 Pipe clamp

16 Base Bracket 48 Pipe isolator clamp

17 Domestic priority switch 49 Pipe clamp

18 Check Valve 50 Pipe isolator clamp

19 Air Separator 51 Case clamp O-ring

20 Manual Drain Port 52 Front cover clamp hook

21 Air Separator body space heat 53 O-ring Gasket

22 Air Separator body Heat source 54 O-ring Gasket

23 Air separator clip 55 O-ring Gasket

24 Air separator clip 56 O-ring Pipe connector holder

25 To Space heating supply line 57 Packing gasket

26 To Space heating supply line 58 Packing gasket

27 To Space heating Supply (IN) 59 Packing gasket

28 To Space heating Return (OUT) 60 Wire holder packing

29 To City water pipe line 61 Electric junction box

30 To City water connection 62 Screws

31 To Water Heater IN Pipe line 63 screws

32 To water heater IN connection 64 Screws

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Limited Warranty

THE HEATING BOX™ LIMITED WARRANTY The limited warranties contained within this document are the only warranties given with your

Heating Box™ Model KD-HBO100 and supersede any prior warranties. All other warranties, expressed or implied, including the implied warranty of merchantability or the implied warranty of fitness for a particular purpose are hereby disclaimed. Our sole obligation under this warranty, and the

purchaser’s sole remedy, is limited to repair or replacement of the Heating Box™ Model KD-

HBO100, Model KD-HBC100, or one of its parts. The owner will be responsible for any other costs

incurred including labor costs for servicing or replacing the part or unit, shipping, delivery and

handling of the replacement part or unit, costs for permits or materials necessary for the repair, or

incidental costs resulting from damage external to the unit resulting from the failure.

The Heating Box™ Model KD-HBO100 or Model KD-HBC100 warranty coverage will be limited to

the original purchaser of the unit, in its original installation location, and only if the installation is

made in North America. In addition, the warranty will only apply if the unit is installed in accordance

with all state, local and federal codes, and if the installation, service and maintenance are

performed following the installation and Operation Manual included with the unit.

The Heating Box™ Model KD-HBO100 or Model KD-HBC100 you have purchased is warranted to

be free of defects and materials and workmanship for a period of five years from the date of

purchase. Your warranty registration card must be completed and mailed to KyungDong America to

establish your installation date.

EXCLUSIONS FROM WARRANTY Any for the following actions shall void this limited warranty: 1. Abuse, alterations, neglect, misuse or misapplications.

2. Improper maintenance.

3. Use in conjunction with any unapproved device or devices.

4. Installation in an area with a corrosive atmosphere.

5. Incorrect water supply pressure.

6. Incorrect sizing.

7. Use with an improper Electric Power.

The following are not covered by this warranty: 1. Damage resulting from fire, flood, accidents or other Acts of God.

2. Damage resulting from water freezing inside the unit or the piping.

3. Damage resulting from use with well water and water with high pH and/or high hardness levels.

TO SUBMIT A CLAIM Report claims to KyungDong America, Inc. by calling 1-800-519-8794.

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