HEARTH HOME MER36 Passive Heat Kit Fire Place Instruction Manual
- June 13, 2024
- HEARTH HOME
Table of Contents
PH-MR
Models: 6K, 8K, 6KL, 8KL, 6KX, 8KX, CAL36, CAL42, CAL36X, CAL42X,
MER36, MER42, MER36P, MER42P, 6KMOD, 8KMOD, MER36MN, MER42MN
Passive Heat Kit Installation Instructions
MER36 Passive Heat Kit Fire Place
Leave this manual with party responsible for use and operation.
CAUTION! Risk of Cuts, Abrasions or Flying Debris.
Wear protective gloves and safety glasses during installation. Sheet metal
edges are sharp.
CAUTION! Do not install damaged components.
If any parts are missing or damaged, contact your dealer before starting
installation. DO NOT install a damaged kit.
DANGER
HOT GLASS WILL CAUSE BURNS.
DO NOT TOUCH GLASS UNTIL COOLED.
NEVER ALLOW CHILDREN TO TOUCH GLASS.
A barrier designed to reduce the risk of burns from the hot viewing glass is
provided with this appliance and must be installed for the protection of
children and other at-risk individuals.
Introduction
The Passive Heat (PH-MR) Heat Management System conveys warm air from the
fireplace into the same room through either one front discharge slot, two side
discharge heat registers or an open top discharge.
Installation of the Passive Heat kit must be done in conjunction with the
appliance installation.
Installation of this kit MUST be performed by a qualified service technician.
WARNING! Risk of Fire! DO NOT install the Passive Heat (PH-MR) Heat
Management System with models that are not approved. Overheating will occur.
The Passive Heat Trim Kit is also available for installation with the Front
Discharge Passive Heat systems and must be purchased separately. Contact your
dealer to order the appropriate kit:
PH-FRTTRIM-36
PH-FRTTRIM-42
Side Discharge Passive Heat systems require the use of the Register Cover Kit
(PH-SIDETRIM), which must be purchased separately, to complete the
installation. Contact your dealer to order the kit. Follow instructions
included with the trim kit to complete installation of the Passive Heat
system. The Passive Heat kit is tested and safe when installed in accordance
with this installation manual.
It is your responsibility to read all instructions before starting
installation and to follow these instructions carefully during installation.
The Passive Heat kit is carefully engineered and must be installed only as
specified. If you modify it or any of its components you will void the
warranty, and you may possibly cause a fire hazard. Installation must be done
according to applicable local, state, provincial, and/or national codes.
Preparation
Plan the location of the appliance.
Determine whether front, open top or side discharge is to be installed and
follow instructions for the appropriate application.
CAUTION! Risk of Burns!
- The fireplace should be turned off and cooled before kit is installed.
- Shut off gas supply.
NOTICE: A mantel is required if a fan is installed. Damage to TV could occur.
Power Vent Option
If an optional power vent will be installed in conjunction with the Passive
Heat Kit, Hearth & Home Technologies recommends the PVLP-SLP or PVV-SLP power
vent options. If the application does not allow for the PVLP-SLP or PVV- SLP
to be used, the PVI-SLP-B may be used. The PVI-SLP-B must be mounted outside
the chase due to the higher noise level created.
For AU models, PVLP-SLP-AU is approved to be used in conjunction with the
Passive Heat Kit.
Kit Contents
Verify and remove contents from packaging before beginning installation. See Figure 1.
Clearances
WARNING! Risk of Fire! Maintain clearances to combustibles as specified.
Ensure all clearances are maintained.
- Maintain minimum distance from top of appliance opening to the room ceiling. Refer to the figures in the Framing section of this instruction.
- An open space, or “cavity,” is allowed up to three inches above the top of the passive heat discharge opening. A chase ceiling is required when the open space “cavity” exceeds three inches above the discharge opening.
Construct the false ceiling from material such as metal, drywall or plywood.
Clearance – Sprinkler to Passive Heat
Figure 2 references the clearances that must be adhered to when installing a
sprinkler head near a passive heat discharge opening.
-
If the distance from the top of the passive heat front discharge opening to the ceiling is 36 in. (914 mm) or greater, then there is no 36 in. (914 mm) clearance requirement. This is for a ceiling sprinkler head installation only.
Note: When installing a sprinkler head near a heat discharge opening, it is recommended to use a sprinkler head with an Extra High sprinkler activation temperature rating.- When installing a sprinkler head exterior of the chase, maintain the following clearances to discharge openings (convection slots, passive heat registers, heat zone registers, etc.): 36 in. (914 mm) top, 18 in. (457 mm) sides and 6 in. (152 mm) bottom.
- DO NOT install a sprinkler head inside a chase that is set up for passive heat.
Good Faith TV Guidelines
Good Faith Guidelines for TV Installations
Above a Fireplace with Passive Heat Option
WARNING! Risk of Fire! Mesh screen required on bottom of discharge
opening when discharge opening is greater than 3 in. (76 mm). Secure mesh to
top of framing.
Mantel Requirements: Some mantel restrictions apply depending on model,
installation or additional accessories. See Mantel Projections section for
details.
NOTICE: A mantel is required if a fan is installed. Damage to TV could
occur.
- Wire mesh required for front discharge or open top discharge passive heat installations with discharge opening of three inches or greater.
NOTE: The TV installation requirements are the same regardless of whether the Passive Heat kit is installed with a top discharge, side discharge or open top discharge.
Framing Dimensions- Passive Heat Front Discharge
WARNING! Risk of Fire! Wire mesh required on bottom of discharge opening (Dimension A) when finished discharge opening is greater than 3 in. (76 mm). Secure mesh to top of framing.
FRONT DISCHARGE MINIMUM FRAMING DIMENSIONS|
---|---
| A| B| C| D| E
TRIM KIT*
INSTALLED| NO TRIM
KIT**
Required Height of
Discharge Opening| Height of Discharge Opening| Clearance to
Top of
Discharge
Opening| Width of
Discharge
Opening| Clearance to
Top of Discharge
Opening From
Bottom of
Appliance| Clearance to
Bottom of Discharge
Opening from
Bottom of Appliance
6000 / 36| Inches| 3-1/2| 2| 41| 36-1/2| 78| 76
millimeters| 89| 51| 1041| 927| 1981| 1930
8000 / 42| Inches| 3-1/2| 2| 43| 42-1/2| 80| 78
millimeters| 89| 51| 1092| 1080| 2032| 1981
- Measurement for Trim Kit (PH-FRTTRIM-36 or PH-FRTTRIM-42) = 3-1/2 in. (89 mm) + Additional Finishing Material Thickness
** Measurement without Trim Kit = 2 in. (51 mm) + Additional Finishing Material Thickness. If finished discharge opening height is greater than 3 in. (76 mm), wire mesh is required.
Figure 4 Passive Heat Front Discharge Framing Dimensions With and Without a Trim Kit
Framing Dimensions – Passive Heat Side Discharge
Note: Trim Kit (PH-SIDETRIM) Required
SIDE DISCHARGE FRAMING DIMENSIONS| | | |
---|---|---|---|---
| A| B| C| D| E
Height of Discharge Opening| Width of
Discharge
Opening| Minimum
Clearance to
Discharge Opening From
Bottom of Appliance| Minimum
Clearance to Ceiling from
Bottom of Appliance| Minimum
Clearance to
Combustible
Materials
6000 / 36
8000 / 42| Inches| 12-1/4| 8-3/4| 68-1/4| 83-1/2| 18
millimeters| 311| 222| 1734| 2121| 457
Figure 5 Passive Heat Side Discharge Framing Dimensions
Open Top Discharge: Both sides and the top are open allowing air to be
conveyed into the room.
WARNING! Risk of Fire! Mesh screen required on bottom of discharge
opening when discharge opening is greater than 3 in, (76 mm). Secure mesh to
top of framing.
OPEN TOP DISCHARGE MINIMUM FRAMING DIMENSIONS
| A*| B| C
Height of
Discharge Opening| Clearance to
Discharge Opening| Width of
Discharge Opening
6000 / 36| Inches| 2| 41| 36-1/2
millimeters| 51| 1041| 927
8000 / 42| Inches| 2| 41| 42-1/2
millimeters| 51| 1041| 1080
- Mesh screen required for front discharge or open top discharge passive heat installations with discharge opening of 3 in. (76 mm) or greater.
Figure 6 Passive Heat Minimum Framing Dimensions Open Top Discharge
Adapter Installation – Front, Side and Open
Top Discharge
CAUTION! Risk of Cuts, Abrasions or Flying Debris.
Wear protective gloves and safety glasses during installation. Sheet metal
edges are sharp.
- Remove rear standoffs and discard. Retain two screws. See Figure 7.
- Remove five knockouts from outer wrap as shown in Figure 7 (A). It is recommended to use a tin snips for removal of knockouts in order to avoid damage to appliance. Remove the remaining two knockouts, located inside the upper heat shield, as shown in Figure 7 (B). Discard knockout pieces and ensure no other material or debris is blocking the hole created by removing the knockout.
- Remove the elbow heat shield. See Figure 7.A.
- Center adapter over opening with the solid portion facing the front of the appliance as shown in Figure 8. Attach both adapters to appliance by installing three screws per adapter. Figure 8 shows adapters installed.
Note: If installing an additional Heat Management System, refer to the instructions included with the kit for further installation instructions.
|
---|---
Passive Heat Template – Front and Side Discharge
Install the passive heat templates to prevent finishing material from being
installed over passive heat discharge openings. Use two templates for front
discharge and four templates for side discharge.
- Hand bend templates as shown in Figure 9.
- Place one template into the top left corner of the discharge opening as shown in Figure 10. Align the outside edge of the framing with the notch in the template as shown in Figure 11. Attach to framing using wood screws.
- Place the second template into the bottom right corner and attach using the same method as in Step 2. If installing templates on framing for a side discharge kit, repeat the process for the additional two templates on the other side discharge opening.
- Once the wall finishing material has been installed, remove the templates and discard. After the templates have been removed, the trim kit, register, or other finishing options may be installed.
Finishing
-
Apply wall sheathing material, such as drywall up to 1/2 in. (13mm) thick up to the edge of the discharge opening.
WARNING! Risk of Overheating! DO NOT apply wall sheathing past the edge of discharge opening or finishing templates. Remove finishing templates before appliance operation. Overheating of appliance and combustible materials will occur. -
Facing Material with Front Trim Kit (PH-FRTTRIM) inch Thick of Less: When using Non-Combustible facing material in this thickness range, the Overlap Fit method may be used. See Figure 12. Place facing materials up to the edge of the discharge opening and install trim kit as instructed. Facing must not interfere with the air flow through the trim kit.
Greater than 1 inch: Non-Combustible facing material in this thickness range must use the Inside Fit method. See Figure 12. Place facing materials up to % in. (13mm) away from the edge of the trim kit to allow for proper removal of the vent cover. Install trim kit as instructed. Consult the appliance Installation Manual to determine maximum facing material thickness. -
Facing Material with Side Discharge (PH-SIDETRIM) inch Thick of Less: When using Non-Combustible facing material in this thickness range, the Overlap Fit method may be used. See Figure 12. Place facing materials up to the edge of the discharge opening and install register covers as instructed. Facing must not interfere with the air flow through the trim kit.
Greater than 1 inch: Non-Combustible facing material in this thickness range must use the Inside Fit method. See Figure 12. Place facing materials up to the edge of the register covers. Install register covers as instructed. See Figure 14. Consult the appliance Installation Manual to determine maximum facing material thickness. -
Install trim kit (PH-FRTTRIM or PH-SIDETRIM) as instructed.
Side Discharge: The PH-SIDETRIM kit is required to complete installation.
Front Discharge: The trim kit (PH-FRTTRIM-36 or PH-FRTTRIM-42) is an optional finishing method. Other standard finishing methods may be used as well. -
See Figure 13 to understand details and requirements for Passive Heat finishing requirements.
Install Register Cover – Side Discharge Only
WARNING! Risk of Overheating! Both passive heat side discharge assemblies included with kit MUST be installed and operational. Overheating will occur.
- Install register cover with louvers facing the front of the fireplace (control side) using provided screws See Figure 14.
WARNING! Risk of Fire! DO NOT block passive heat registers! Overheating will occur.
Mantel Projections
If installing a television (TV) above the appliance, see Section 2.B of the
appliance Installation Manual.
NOTICE: A mantel is required if a fan is installed. Damage to TV could
occur.
Combustible Mantels – Passive Heat Installed
Installation of Passive Heat with Other Optional Heat Management Systems
There are other heat management options available for use with these models.
Consult the appliance manual for compatible options.
NOTICE: Cap must be removed from adapter prior to attaching venting for
the heat management kit. HeatZone® -Gas and Heat-Out-Gas system will not
function properly if cap remains attached.
Passive Heat Kit Installed with Optional Heat-Zone-Gas
-
Only one Heat-Zone-Gas kit may be installed and used in conjunction with the Passive Heat System.
Installation of the HZMR-ADP kit is not required.
WARNING! Risk of Overheating! DO NOT block the holes on the Passive Heat adapter. Venting MUST not extend past the rib on the Passive Heat adapter. If venting or insulation is blocking holes in the Passive Heat adapter overheating of chase could occur. -
Remove cap from the Passive Heat adapter and discard the cap.
The venting for the Heat-Zone-Gas kit will attach directly on top of the Passive heat adapter. See Figure 17. -
Refer to the instructions included with the Heat-Zone-Gas kit for more information.
Passive Heat Kit Installed with Optional Heat-Out-Gas
-
One Heat-Out-Gas kit may be installed and used in conjunction with the Passive Heat Heat Management System.
WARNING! Risk of Overheating! Be sure the venting does not does not extend past the rib on Passive Heat adapter. If venting or insulation is blocking holes in the Passive Heat adapter overheating of chase could occur. -
Remove covers from the Passive Heat adapters and discard the covers. The venting for the Heat-Out-Gas kit will attach directly on top of the Passive heat adapter. See Figure 17.
-
Refer to the instructions included with the HEAT-OUTGAS kit for more information.
The Passive Heat Kit is compatible with a GFK-160A or GFK210-240V fan. Consult the appliance Installation Manual for mantel projection information and TV guidelines.
Maintenance
Service and maintain the gas fireplace per instructions.
Keep the air register(s) clean and free of any blockage.
Please contact your Hearth & Home Technologies dealer
with any questions or concerns.
For the location of your nearest Hearth & Home
Technologies dealer,
please visit www.hearthnhome.com.
Hearth & Home Technologies
7571 215th Street West, Lakeville, MN 55044
www.hearthnhome.com