Kozyheat Nordik 41DV Owner's manual

Hussong Mfg. Co, Inc. 1 Rev. 3 - January 2024

NDK-41-DV - PFS Report No. 22-838 Starng Serial Number: 23 N41DV00001 23

INSTALLATION AND

OPERATION MANUAL

Nordik 41 DV

Model #NDK-41-DV

Direct Vent Gas Fireplace

Evoluon of Fire™

with the EVO Elevated Burner™

English and French installation manuals are available

through your local dealer or website. Visit our website

www.kozyheat.com.

Les manuels d’installation en français et en anglais sont

disponibles chez votre détaillant local. Visitez

www.kozyheat.com.

⚠ WARNING: FIRE OR EXPLOSION

HAZARD

Failure to follow safety warnings exactly

could result in serious injury, death, or

property damage.

Do not store or use gasoline or other flam-

mable 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 electrical switch; do not

use any phone in your building.

• Leave the building immediately.

• 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.

Installation and service must be performed by

a qualified installer, service agency or the gas

supplier

This appliance may be installed in an aermarket, permanently

located, manufactured home (USA only) or mobile home, where

not prohibited by local codes.

This appliance is only for use with the type of gas indicated on the

rang plate. This appliance is not converble for use with other

gases, unless a cered kit is used.

INSTALLER: Leave this manual with the appliance.

CONSUMER: Retain this manual for future reference.

P.O. BOX 557 204 INDUSTRIAL PARK DRIVE

LAKEFIELD, MINNESOTA USA 56150-0577

Hussong Mfg. Co, Inc. 2 Rev. 3 - January 2024

NDK-41-DV - PFS Report No. 22-838 Starng Serial Number: 23 N41DV00001 23

Hussong Mfg. Co, Inc. 3 Rev. 3 - January 2024

NDK-41-DV - PFS Report No. 22-838 Starng Serial Number: 23 N41DV00001 23

CONGRATULATIONS!

Hussong Manufacturing welcomes you as a new owner of a Kozy Heat gas fireplace. Kozy Heat

products are designed with superior components and materials, assembled with care by trained crafts-

men who take pride in their work. To ensure you receive a quality product, the burner and valve as-

sembly are 100 percent test-fired, and the complete fireplace is thoroughly inspected before packag-

ing. Our commitment to quality and customer satisfaction has remained the same for over 40 years.

We offer a complete line of gas, wood, and electric fireplaces, along with stylish accessories to com-

plement any decor. Adding a fireplace is one of the best ways to increase the value of your home,

and we are proud to offer a network of dealers throughout the country to help make your experience

everything you imagine. We pride ourselves in being dedicated not only to functionality and reliability,

but also customer safety. We offer our continual support and guidance to help you achieve the maxi-

mum benefit and enjoyment from your Kozy Heat gas fireplace.

Jim Hussong

President

Dudley Hussong

Board Chairman

Homeowner Reference Informaon We recommend you record the following Informaon:

Model Name: ______________________________ Date Purchased / Installed: _______________________________

Serial Number: _____________________________ Locaon of replace: ____________________________________

Dealership purchased from: _________________________________________________________________________________

Dealership phone number: ____________________

Notes: __________________________________________________________________________________________________

________________________________________________________________________________________________________

Read this manual before installing or operang this appliance

Please retain this owner’s manual for future reference.

Hussong Mfg. Co, Inc. 4 Rev. 3 - January 2024

NDK-41-DV - PFS Report No. 22-838 Starng Serial Number: 23 N41DV00001 23

Hussong Mfg. Co, Inc. 5 Rev. 3 - January 2024

NDK-41-DV - PFS Report No. 22-838 Starng Serial Number: 23 N41DV00001 23

HOMEOWNER REFERENCE INFORMATION .................... 3

TABLE OF CONTENTS ..................................................... 5

1.0 Introducon ........................................................... 7

1.1 Appliance Cercaon .........................................7

1.2 California Proposion 65 Warning .......................7

1.3 Requirements for the Commonwealth of

Massachuses ......................................................7

2.0 Specicaons ......................................................... 8

2.1 Heang Specicaons ..........................................8

2.2 Electrical Specicaons ........................................8

2.3 Appliance Dimensions ..........................................9

2.4 Safety Barrier Informaon ..................................10

3.0 Framing ................................................................ 12

3.1 Appliance Placement Consideraons .................12

3.2 Appliance Design Opons ...................................12

3.3 Floor Support and Protecon .............................12

3.4 Seng the Appliance..........................................12

3.5 Stand-O Assembly and Installaon ..................13

3.6 Nailing Flange Assembly and Installaon ...........14

3.7 Clearance to Combusbles .................................15

3.8 Wall Enclosure Rough Framing ...........................17

3.9 Vent Terminaon Framing .................................18

3.10 Outdoor Covered Fireplace Installaon .............20

4.0 Heat Management................................................ 22

4.1 Appliance Preparaon for Komfort Zone Kit ......22

5.0 Facing and Finishing ............................................. 24

5.1 Standard Installaon - Facing and Finishing

Requirements .....................................................24

5.2 Finishing Trim Kit Assembly ................................30

5.3 Safety Barrier Installaons .................................31

5.4 #B41-FRSF2 & #B41-PSF2 Safety Barrier

Preparaon .........................................................32

6.0 Gas Line Connecon ............................................. 33

6.1 Gas Conversions .................................................33

6.2 Gas Line Installaon ...........................................33

7.0 Terminaon Locaons .......................................... 34

7.1 Vercal Vent Cap Terminaon ...........................34

7.2 Minimum Terminaon Clearances .....................35

8.0 Venng ......................................................................... 36

8.1 Approved Vent Systems .............................................. 36

8.2 Venng Requirements ................................................ 37

8.3 Vent Restricon .......................................................... 37

8.4 Use of Flexible Venng Outside the Appliance

Enclosure .................................................................... 37

8.5 Natural Dra Installaons ........................................... 38

8.6 Class A Chimney / Masonry Chimney Conversion ...... 42

9.0 Fireplace Setup ............................................................. 43

9.1 Glass Frame Assembly ................................................ 43

9.2 Boom Frame Removal and Installaon .................... 43

9.3 Light Kit ....................................................................... 44

9.4 Media Tray Base - Side Trim ....................................... 45

9.5 NK41-500 Log Set Installaon ..................................... 46

9.6 Control Board Removal and Installaon ..................... 49

10.0 Electrical Informaon .................................................. 51

10.1 Electrical Specicaons ............................................. 51

10.2 Wiring Requirements ................................................ 51

11.0 Operang Instrucons ................................................ 54

11.1 Setup Proame 2 IFC Module ................................... 55

11.2 Inialize the Control System ..................................... 55

11.3 Reset the System for Manual Operaon ................... 55

11.4 Automac Safety Turn-o ......................................... 55

11.5 Backup Baery Operaon ......................................... 55

11.6 Control System 7 Day Timeout.................................. 56

11.7 IFC Module Ignion Sequence .................................. 56

11.8 Addional Diagnosc Informaon ............................ 56

11.9 Remote Control Operaon ........................................ 57

12.0 Pressure Tesng and Burner Adjustments ................... 62

12.1 Pressure Tesng ........................................................ 62

12.2 Flame Appearance Adjustment ................................. 63

13.0 Troubleshoong .......................................................... 65

14.0 Maintenance ............................................................... 68

14.1 Firebox ...................................................................... 68

14.2 Fan ............................................................................. 68

14.3 Vent System .............................................................. 68

14.4 Glass Assembly .......................................................... 68

14.5 Burner and Pilot System ............................................ 69

15.0 Replacement Parts List ................................................ 70

Limited Lifeme Warranty ................................................... 72

TABLE OF CONTENTS

Hussong Mfg. Co, Inc. 6 Rev. 3 - January 2024

NDK-41-DV - PFS Report No. 22-838 Starng Serial Number: 23 N41DV00001 23

Hussong Mfg. Co, Inc. 7 Rev. 3 - January 2024

NDK-41-DV - PFS Report No. 22-838 Starng Serial Number: 23 N41DV00001 23

1.1 Appliance Cercaon

Laboratory: PFS in Coage Grove, Wisconsin

Standards:

• ANSI Z21.88-2019/CSA 2.33-2019, Vented Gas Fireplace

Heaters

• CSA 2.17 2017, Gas-Fired Appliances for Use at High Al-

tudes

This installaon must conform with local codes, or in the ab-

sence of local codes, with the Naonal Fuel Gas Code, ANSI

Z223.1/NFPA 54, or the Natural Gas and Propane Installaon

Code, CSA B149.1.

1.2 California Proposion 65 Warning

⚠ WARNING: This product can expose you to chemicals in-

cluding Carbon Monoxide, that is an externally vented by-

product of fuel combuson, which is [are] known to the State

of California to cause birth defects or other reproducve

harm. For more informaon, visit www.P65Warnings.ca.gov.

1.3 Requirements for the Commonwealth of

Massachuses

The following requirements reference various Massachuses

and naonal codes not contained in this manual.

For all sidewall horizontally vented gas fueled equipment

installed in every dwelling, building or structure used in

whole or in part for residenal purposes, including those

owned or operated by the Commonwealth and where the

side wall exhaust vent terminaon is less than (7) feet above

nished grade in the area of the venng, including but not

limited to decks and porches, the following requirements

shall be sased:

1.3.1 Installaon of Carbon Monoxide Detectors

At me of installaon of side wall horizontally vented gas

fueled equipment, the installing plumber or gas-er shall

observe that a hard wired carbon monoxide detector with an

alarm and baery back-up is installed on the oor level

where the gas equipment is to be installed. In addion, the

installing plumber or gas-er shall observe that a baery

operated or hard wired carbon monoxide detector is in-

stalled on each addional level of the dwelling, building or

structure served by the side wall horizontal vented gas fueled

equipment. It shall be the responsibility of the property own-

er to secure the services of qualied licensed professionals

for the installaon of hard wired carbon monoxide detectors.

In the event that the side wall horizontally vented gas fueled

equipment is installed in a crawl space or ac, the hard

wired carbon monoxide detector with alarm and baery back

-up may be installed on the next adjacent oor level. In the

event that the requirements of this subdivision can not be

met at the me of compleon of installaon, the owner shall

have a period of thirty (30) days to comply with the above

requirements; provided, however, that during said thirty (30)

day period, a baery operated carbon monoxide detector

with an alarm shall be installed.

1.3.2 Approved Carbon Monoxide Detectors

Each carbon monoxide detector as required in accordance with

the above provisions shall comply with NFPA 720 and be ANSI/UL

2034 listed and IAS cered.

1.3.3 Signage

A metal or plasc idencaon plate shall be permanently

mounted to the exterior of the building at a minimum of eight (8)

feet above grade directly in line with the exhaust vent terminal

for the horizontally vented gas fueled heang appliance or

equipment. The sign shall read, in print no less the one-half inch

(½) in size, “GAS VENT DIRECTLY BELOW. KEEP CLEAR OF ALL OB-

STRUCTIONS”.

1.3.4 Inspecon

The state or local gas inspector of the side wall horizontally vent-

ed gas fueled equipment shall not approve the installaon un-

less, upon inspecon, the inspector observes carbon monoxide

detectors and signage installed in accordance with the provisions

of 248 CMR 5.08 (2) (a) 1 through 4.

1.3.5 Exempons

The following equipment is exempt from 248 CMR 5.08 (2) (a) 1

through 4: The equipment listed in Chapter 10 entled

“Equipment Not Required To Be Vented” in the most current

edion of NFPA 54 as adopted by the Board; and Product Ap-

proved side wall horizontally vented gas fueled equipment in-

stalled in a room or structure separate from the dwelling, build-

ing or structure used in whole or in part for residenal purposes.

1.3.6 Manufacturer Requirements

1.3.6.1 Gas Equipment Venng System Provided

When the manufacturer of Product Approved side wall horizon-

tally vented gas equipment provides a venng system design or

venng system components with the equipment, the instruc-

ons provided by the manufacturer for installaon of the equip-

ment and the venng system shall include:

• Detailed instrucons for the installaon of the venng sys-

tem design or the venng system components; and

• A complete parts list for the venng system design or

venng system.

1.3.7 Gas Equipment Venng System NOT Provided

When the manufacturer of Product Approved side wall horizon-

tally vented gas equipment does not provide the parts for

venng the ue gases, but idenes “special venng systems”,

the following requirements shall be sased by the manufactur-

er:

• The referenced “special venng systems” instrucons shall

be included with the appliance or equipment installaon

instrucons and;

• The “special venng systems” shall be Product Approved by

the Board, and the instrucons for that system shall include

a parts list and detailed installaon instrucons.

A copy of all installaon instrucons for all Product Approved

side wall horizontally vented gas fueled equipment, all venng

instrucons, all parts lists for venng instrucons, and/or all

venng design instrucons shall remain with the appliance or

equipment at the compleon of the installaon.

1.0 Introducon

Hussong Mfg. Co, Inc. 8 Rev. 3 - January 2024

NDK-41-DV - PFS Report No. 22-838 Starng Serial Number: 23 N41DV00001 23

2.0 Specicaons

2.1 Heang Specicaons

2.1.1 Altude Adjustment

This appliance may be installed at higher altudes. Please refer to Naonal

Fuel Gas Code ANSI Z223.1/NFPA 54, CSA-B149.1 Natural Gas and Propane

Installaon Code, local authories, or codes having jurisdicon in your area

regarding derate guidelines.

2.1.1.1 US Installaons

Refer to the American Gas Associaon guidelines for the gas designed appli-

ances derang method. For elevaons above 2,000’ (610m), input rangs are

to be reduced by 4% for each 1,000’ (305m) above sea level.

2.1.1.2 Canadian Installaons

When the appliance is installed at elevaons above 4,500’ (1,372m), the cer-

ed high-altude rang shall be reduced at the rate of 4% for each addional

1,000’ (305m).

2.2 Electrical Specicaons

• The juncon box in this appliance requires 120VAC, 60Hz, and 6 Amps.

• Verify the household breaker is shut o prior to working on any electrical

lines.

• The AC power supply to this appliance must be hot at all mes and shall

not have a switch installed in it.

Natural Gas Propane

Maximum Input Rang 40,000 Btu/h

(11.72 kW)

40,000 Btu/h

(11.72 kW)

Orice Size (DMS) Le: #48

Right: #48

Rear: #55

Le: #1.20mm

Right: #1.20mm

Rear: #68

Minimum Input Rang 22,000 Btu/h

(6.45 kW)

21,000 Btu/h

(6.15 kW)

Minimum Inlet Pressure 5” WC (1.25 kPa)

7” WC (1.74 kPa)

12”WC (2.99 kPa)

Maximum Inlet Pressure 10”WC (2.49 kPa) 13”WC (3.24 kPa)

Manifold Pressure (High) 3.8” WC (0.95 kPa) 11” WC (2.74 kPa)

Manifold Pressure (Low) 1.1” WC (0.27 kPa) 2.9” WC (0.72 kPa)

Venturi Opening Sengs Le : 1/8” (3mm)

Right: 1/8” (3mm)

Rear: 5/8” (16mm)

Le: 5/16” (8mm)

Right: 5/16” (8mm)

Rear: 5/8” (16mm)

Hussong Mfg. Co, Inc. 9 Rev. 3 - January 2024

NDK-41-DV - PFS Report No. 22-838 Starng Serial Number: 23 N41DV00001 23

2.3 Appliance Dimensions

Figure 2.1 - Appliance Dimensions

Hussong Mfg. Co, Inc. 10 Rev. 3 - January 2024

NDK-41-DV - PFS Report No. 22-838 Starng Serial Number: 23 N41DV00001 23

2.4 Safety Barrier Informaon

WARNING: A barrier designed to reduce the risk of

burns from the hot viewing glass is provided with this

appliance and shall be installed for the protecon of

children and other at-risk individuals.

If the barrier becomes damaged, the barrier shall be

replaced with Hussong Mfg.’s barriers for this appliance.

Please refer to Secon 5.3 Safety Barrier Installaons on

page 30 for mounng and installaon opons.

IMPORTANT: Consider the height of hearth nish material

when building a replace plaorm. Proper installaon of safe-

ty barriers require the boom of the replace to be level with

nished hearth.

NOTE: The nishing trim kit is highly recommended as it en-

sures proper tment of safety screen barrier along with an

edge to stop nishing material against. This ensures proper

venlaon air ow and accessibility for replace servicing. See

Secon 5.2.

Safety Barriers Approved for All Design Opons

(Standard or Kozy Zone Kit Installaons)

Safety Barriers Approved for Kom-

fort Zone Kit Installaons ONLY

IMPORTANT: The B41-PSF2 and B41-FRSF2 (Figure 2.3) are ONLY approved for use when

the Nordik 41 DV is installed with an approved Komfort Zone Kit. The approved kits are

#KZK-038 and #KZK-1510A.

The other (4) safety barriers shown in Figure 2.2 are approved in all installaon scenarios.

See Secon 5.4 for addional safety barrier preparaon informaon.

Figure 2.2 - Safety Barriers Group #1 Figure 2.3 - Safety Barriers Group #2

Hussong Mfg. Co, Inc. 11 Rev. 3 - January 2024

NDK-41-DV - PFS Report No. 22-838 Starng Serial Number: 23 N41DV00001 23

2.4.1 #B41-FRSF2 & #B41-PSF2 Safety Barrier Preparaon

IMPORTANT: The #B41-FRSF2 and #B41-PSF2 are only allowed to be installed when the replace is

installed with an approved KZK-038 or KZK-1510A.

Requirement:

When using the #B41-FRSF2 or #B41-PSF2 you must remove and discard the rope from the backside of

the safety barrier.

Figure 2.4 - Rope Removal

Hussong Mfg. Co, Inc. 12 Rev. 3 - January 2024

NDK-41-DV - PFS Report No. 22-838 Starng Serial Number: 23 N41DV00001 23

3.0 Framing

3.1 Appliance Placement Consideraons

Read all documentaon for your specic installaon and

design opons prior to appliance installaon.

WARNING: Due to high temperatures, the appliance

should be located out of trac and away from furniture

and draperies.

FIRE HAZARD: Do NOT install this appliance directly on

carpeng, vinyl, or any other combusble material other

than wood.

Note: Unless otherwise noted all clearances / images in this

manual are based o of nominal 2” x 4” framing being used.

• This appliance must be installed on a level surface ca-

pable of supporng the replace and venng. If possi-

ble, place the replace in a posion where the vent

terminates between two studs, eliminang the need

for any addional framing.

• This replace may be installed in a bedroom.

• Please be aware of the large amount of heat this re-

place will produce when determining a locaon.

3.2 Appliance Design Opons

This appliance oers several design opons for managing

the heat produced by this replace.

Note: When deciding on which design opon suites your

applicaon please review all secons throughout this

manual as dierent design opons have dierent framing,

facing, and nishing opons and requirements.

• Standard Installaon will be outlined in this manual in

secons marked ‘standard installaon’ and must be

followed if no design opons (Komfort Zone Kit) are to

be used. The replace chamber and ceiling minimum

height must be 76” (1930mm) for standard installa-

ons. Only the safety barriers shown in Figure 2.2 are

allowed for this installaon scenario.

• Komfort Zone Kit (KZK) oers the opon to redistribute

radiant heat through plenum(s). This opon allows for

combusble facing materials above the replace, heat

reducon for a TV above the replace, and lower man-

tel clearances. See secon 4.0, Heat Management on

page 21. If installing a Komfort Zone Kit (#KZK-038 or

#KZK-1510A), the framing requirements may be dier-

ent than the standard dimensions listed in this secon.

Please reference the manual included with your kit

before compleng all replace framing and other in-

stallaon consideraons. The replace chamber and

ceiling minimum height must be 82” (2083mm) for KZK

opons. Safety barriers shown in Figure 2.2 and Figure

2.3 are allowed for installaon when using an approved

Komfort Zone Kit. Safety barriers shown in Figure 2.3

are only allowed for use with an approved Kozy Zone

Kit.

• Kozy Power Vent is a fan-powered mechanical dra

vent system (horizontal terminaons only) for use with

any of the design opons listed previously in this sec-

on (Standard or Komfrot Zone Kit). Reference the

#KPV manual for all system requirements. Ulizing the

Kozy Power Vent system will not change facing and

nishing requirements or safety barrier requirements

from the Standard or Komfort Zone Kit design opons.

3.3 Floor Support and Protecon

• Floor protecon in front of the replace is not required.

Combusble material may be used if installing a hearth ex-

tension. Consider the thickness of the hearth extension n-

ishing material if building a replace plaorm. The boom

of the replace must be level with nished hearth extension

for proper t of a safety barrier.

• If this appliance is to be installed directly on carpeng, le,

or other combusble material other than wood ooring, this

appliance shall be installed on a metal or wood panel ex-

tending the full width and depth of the appliance.

• If the appliance is to be installed above oor level, a solid,

connuous plaorm must be constructed below the appli-

ance.

3.4 Seng the Appliance

• This secon outlines informaon on seng the appliance in

the framed and starng the installaon process.

• Decide on your appliance installaon opon menoned in

Secon 3.2 before seng the appliance. Your framing re-

quirements, clearance to combusbles, and vent congura-

on will depend upon this decision.

IMPORTANT: If you are using a KZK appliance installaon opon

refer to Secon 4.0 for addional preparaon steps that must be

completed before seng the appliance in the framed opening.

General Procedure

 Frame your opening based on your selected appliance in-

stallaon opon. Refer to Secon 3.8 for informaon for the

framed opening of the standard installaon opon. If you

are using a KZK installaon opon refer to the KZK manual

for framing.

 Lay out the path for your vent run before installing appli-

ance.

 We recommend installing the nishing trim kit. This pro-

vides a shadow box around the required safety barrier. Your

nishing material will bu up against the nishing trim. Re-

fer to Secon 5.2 for installaon of nishing trim kit. If you

are using the nishing trim kit, this must be installed before

the following steps.

 Install the nailing anges on the appliance. Refer to Secon

3.6 for assembly and installaon. The nailing anges are

where you secure your appliance to the framed opening.

The framing will be ush with the appliance when it is in-

stalled.

 Assemble and install the top stand-o assembly. Refer to

Secon 3.5 for more informaon on the top stand-o as-

sembly. This stand-o assembly provides the necessary

thermal protecon of the header.

 Place the replace inside the framed opening and secure

the appliance into the framing. The replace will be ush

with the framing. If you use the nishing trim kit, the trim

kit will sck past the framing as the nishing material will

bu up against the trim.

 The next steps would involve installing the KZK (if applica-

ble), vent pipe, connect gas line, connect electrical wiring,

and nally nishing material.

Hussong Mfg. Co, Inc. 13 Rev. 3 - January 2024

NDK-41-DV - PFS Report No. 22-838 Starng Serial Number: 23 N41DV00001 23

3.5 Stand-O Assembly and Installaon

WARNING: The top stand-os provide the

7” (177mm) minimum clearance to the header. Use

only non-combusble material in this area for the

enre width of the replace. DO NOT use wood,

sheetrock, et cetera, in this zone.

Top stand-o brackets must be formed and aached

prior to posioning replace into framed opening.

Note: If installing trim kit assembly #B41-FTK, please

refer to Secon 5.2 Finishing Trim Kit Assembly on

page 29 before installing stand-os.

Note: If installing KZK-038 or KZK-1510A complete the

necessary preparaon work before assembling the

stand-o assembly.

Installaon:

1. Remove and save (4) screws securing stand-o

heat shields and stand-o brackets on top of the

replace.

2. Form each top stand-o bracket by bending at

perforaons, as shown.

3. Align the holes in the formed top stand-os with

the holes in the replace top. Secure with the (4)

screws previously removed along with (4) screws

located on top of the replace.

4. Form stand-o heat shields as shown. The ange

will face up and to the back of the replace.

5. Align the in the stand-o heat shields with the

holes in the top stand-o brackets Secure with

(8) screws provided in the replace components

packet.

Figure 3.1 - Stand-O Installaon

Hussong Mfg. Co, Inc. 14 Rev. 3 - January 2024

NDK-41-DV - PFS Report No. 22-838 Starng Serial Number: 23 N41DV00001 23

3.6 Nailing Flange Assembly and Installaon

Note: If installing the Finishing Trim Kit (recommended)

please complete that prior to installing the nailing anges.

CAUTION: Never permanently remove these assemblies

from the replace. They must be secured regardless of

nish material used.

1. Remove (2) nailing anges from the right and le side

of the replace.

2. Align nailing ange with holes on outside corners of

replace, with the stand-o anges on the nailing

anges facing away from the replace

3. Secure the nailing anges to the replace with screws

(provided) through the slots in nailing anges.

4. Bend perforaon on nailing ange unl parallel with re-

place face. Do not bend toward replace face.

5. Posion framing stud against the small stand-o (located

on backside of nailing ange). Secure with nails or screws.

When installed, the nailing anges provide the minimum

¼” (6mm) clearance from the sides of the replace to framing.

Figure 3.2 - Nailing Flange Installaon

Hussong Mfg. Co, Inc. 15 Rev. 3 - January 2024

NDK-41-DV - PFS Report No. 22-838 Starng Serial Number: 23 N41DV00001 23

3.7 Clearances to Combusbles

Table 3.1, Minimum Fireplace Clearances to Combusble Material

Minimum height of replace enclosure 76” 1930mm

Base of the replace to ceiling 76” 1930mm

Fireplace top to ceiling 41-1/2” 1054mm

From replace top stand-o brackets 0” 0mm

From replace le and right stand-o brackets (nailing anges) 0” 0mm

From replace back stand-o brackets 0” 0mm

From replace corners 1/2” 13mm

From replace front 36” 914mm

Fireplace sides to adjacent sidewall 3/4” 19mm

Fireplace top to 3/4” (19mm) mantel trim 6-1/2” 165mm

Mantel 6” (152mm) deep from replace top 10” 254mm

Horizontal venng within minimum replace enclosure - Top surface of vent pipe 13-1/2” 343mm

Horizontal venng within minimum replace enclosure - Le, right, and boom surfaces

of vent pipe

1” 25mm

Vercal venng within minimum replace enclosure - All surfaces 1” 25mm

• See Table 3.1 below for minimum clearances for the standard installaon opon.

• See Figure 3.3 on the following pages for typical standard installaon opons.

• Clearances may change when ulizing the Komfort Zone Kit (Part# KZK-038 or KZK-1510A). Please reference the manual

included with that kit.

• Unless otherwise noted all clearances / images in this manual are based o of nominal 2” x 4” framing being used.

Hussong Mfg. Co, Inc. 16 Rev. 3 - January 2024

NDK-41-DV - PFS Report No. 22-838 Starng Serial Number: 23 N41DV00001 23

Figure 3.3 - Typical Appliance Installaon

Hussong Mfg. Co, Inc. 17 Rev. 3 - January 2024

NDK-41-DV - PFS Report No. 22-838 Starng Serial Number: 23 N41DV00001 23

3.8 Wall Enclosure Rough Framing

Note: Unless otherwise noted all clearances / images in this

manual are based o of nominal 2” x 4” framing being used.

3.8.1 Rough Framing

WARNING: Provide adequate clearances around air openings

into the combuson chamber. Provide adequate clearance in

front of the replace for barrier removal, component access,

gas line installaon, service access, etc.

CAUTION: Cold air transfer area. The surround replace

chase must comply with all clearances as outlined in this

manual, and be constructed in compliance with local build-

ing codes. Outside walls should be insulated to prevent cold

air from entering room.

Rough-in dimensions outlined in FIGURE 3.4 below are the

same for all design opons and must be followed.

• Floor protecon in front of the replace is not required.

Combusble material may be used if installing a hearth

extension. Consider the thickness of the hearth exten-

sion nishing material if building a replace plaorm.

The hearth may be ush with the boom nishing edge

of the replace.

• The boom of the replace must be placed directly on a

wood or non-combusble surface (not linoleum or car-

pet). If this appliance is to be installed directly on car-

peng, le, or other combusble material other than

wood ooring, this appliance shall be installed on a

metal or wood panel extending the full width and depth

of the appliance.

• Framing dimensions should allow for wall covering thick-

ness and replace facing materials.

• If masonry (oponal) is to be used, prepare the foundaon

necessary for the full masonry load. A lintel must be used

over the top of the appliance to support the added weight

of the masonry construcon above the replace.

3.8.2 Mounng a Television Above a Fireplace and

Television Recess Construcon

WARNING: All clearances to venng must be maintained.

• Mounng a television above a replace is a common

pracce. Mantel depth, ceiling heights, and wall and

mantel construcon material all aect television surface

temperatures. Most television manufacturers specify in

their instrucons that a television should not be installed

on, near, or above a heat source.

• If you want a Television above a replace it is highly

recommended install the replace with the KZK installaon

design opon. Refer to Secon 3.2 for more informaon on

the KZK design. Install the plenum discharge above the

locaon of a television. This will help distribute heat from

below the TV to above the TV. We also recommend the use

of a mantel to deect heat away from the television.

• Television locaon rests solely on the homeowner. It is the

home owner’s responsibility that the preferred TV

mounng and mantel design will not exceed the listed

maximum operaon temperature of their electronic goods.

Figure 3.4 - Minimum Appliance Framing

When at minimum chamber depth framing cripples must be on edge

when installing side KZK to maintain required clearance. See KZK manual.

Hussong Mfg. Co, Inc. 18 Rev. 3 - January 2024

NDK-41-DV - PFS Report No. 22-838 Starng Serial Number: 23 N41DV00001 23

3.9 Vent Terminaon Framing

The following informaon applies to all standard,

and Komfort Zone Kit design opons.

If using Kozy Power Vent #KPV, please reference the

manual included with the kit.

3.9.1 Vent Terminaon Locaon

• Natural Dra: Exterior vent terminaon loca-

on must be in compliance with secon 7.0,

TERMINATION LOCATIONS on page 33.

• Power Vent System: See the #KPV manual that

came with the power vent system for termina-

on locaon requirements

3.9.2 Clearances

• A minimum of 1” (25mm) clearance on all sides

of the vercal vent pipe must be maintained.

Refer to FIGURE 3.5 below for the following clear-

ances

• A minimum of 1” (25mm) clearance from the

top surface on the horizontal pipe must be

maintained.

• When the replace is installed at the

minimum chamber height any hori-

zontal venng must have a minimum

clearance of 13-1/2” (343mm) from the

top of the chamber. The horizontal pipe

aer the wall pass-through must main-

tain a 1” (25mm) clearance to combus-

bles on all surfaces of the pipe.

• A minimum of 1” (25mm) clearance on the

sides and boom surfaces on the horizontal

pipe must be maintained.

NOTE: Elbows listed with approved vent systems for

this appliance vary in vercal length. Please consult

the vent manufacturer’s instrucons to determine

the elbow dimension used for installaon. Adjust

the wall pass-through rough opening dimensions as

necessary to maintain clearance requirements.

Figure 3.5 - Horizontal Vent Pipe Clearance

Hussong Mfg. Co, Inc. 19 Rev. 3 - January 2024

NDK-41-DV - PFS Report No. 22-838 Starng Serial Number: 23 N41DV00001 23

3.9.3 Vercal Terminaons

• Follow vent pipe manufacturer’s installaon instruc-

ons for vercal terminaons.

• Ac insulaon shields may be insulated using un-

faced insulaon products listed as non-combusble

per ASTM E 136

3.9.4 Horizontal Terminaons

WARNING: Do not recess the vent cap into wall or siding.

IMPORTANT: Horizontal vent secons require

1/4” (6mm) rise for every 12” (305mm) of travel for nat-

ural dra applicaons.

Wall thimble products that comply with the required

1” (25mm) top clearance to combusbles must be in-

stalled for all horizontal vent runs that pass through inte-

rior or exterior walls. These wall thimble products may be

insulated using unfaced insulaon products listed as non-

combusble per ASTM E 136.

Elbows listed with approved vent systems for this appli-

ance vary in vercal length. Please consult the vent manu-

facturer’s instrucons to determine the elbow dimension

used for installaon. Adjust the wall pass-through rough

opening dimensions to maintain clearance requirements.

3.9.5 Wall Pass Through Framing Instrucons

Follow FIGURE 3.6 below for minimum rough-in dimensions.

1. Measure from oor level of the replace to the center of

where the vent pipe will penetrate the wall. The dimen-

sion in FIGURE 3.6 is used with a Simpson DuraVent el-

bow.

2. Cut and frame an opening in the wall to allow the vent

system to run level through the wall pass-through.

3. Follow the vent pipe manufacturer’s installaon instruc-

ons for natural dra vent installaon.

Note: Vent pipe dimensions are tested with listed Simpson

Duravent pipe. Other manufacturers product dimensions

may vary.

Figure 3.6 - Minimum Wall Pass-Thru Framing

Hussong Mfg. Co, Inc. 20 Rev. 3 - January 2024

NDK-41-DV - PFS Report No. 22-838 Starng Serial Number: 23 N41DV00001 23

3.10 Outdoor Covered Fireplace Installaon

A outdoor covered replace installaon allows a replace

to be installed in an outdoor covered area, where the

appliance is protected from direct precipitaon.

Follow the instrucons and illustraons in this secon for

installaon procedures.

3.10.1 Safety Screen Barriers

Hussong Mfg. highly recommends to use black painted

safety barriers in outdoor installaons. Other screen bar-

riers that incorporate a plated or pana nish are highly

suscepble to oxidaon and discoloraon.

3.10.2 Requirements

• The connuous insulated building envelope and weather-

proof membrane are not to be interrupted by replace

installaon.

• Fireplace operaon is approved from 40°F to 110°F.

• All wiring connecons shall be in accordance with out-

door requirements of NECA NFPA 70.

• All clearances and requirements in your appliance manual

must be adhered to.

Figure 3.7 - Outdoor Covered Installaon

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Kozyheat Nordik 41DV Owner's manual

Kozyheat Nordik 41DV Owner's manual

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