HEARTH AND HOME MEZZO36-C Direct Vent Gas Fireplace Installation Guide

: September 4, 2024
: HEARTH AND HOME

Table of Contents

HEARTH AND HOME MEZZO36-C Direct Vent Gas Fireplace
Introduction
Installation Instructions
Finishing Instructions – Side Discharge
Read User Manual Online (PDF format)
Download This Manual (PDF format)

HEARTH AND HOME MEZZO36-C Direct Vent Gas Fireplace

Ducted Passive Heat System for Heat Management
Installation Instructions
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 instal-lation. 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.

WARNING! Risk of Fire!

Combustible materials MUST NOT overlap or be placed behind a decorative front.
DO NOT apply combustible materials beyond the minimum clearances. Comply with all minimum clearances to combustibles as specified. Overlapping materials could ignite and will interfere with proper operation of decorative fronts.

Introduction

The Side Discharge Ducted Passive Heat (PHSI-MCE) System conveys warm air from the fireplace into the same room through a front discharge slot connected to the ap-pliance heat management knock outs with the provided flex ducting. Installation of the Ducted 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 Ducted Passive Heat (PHSI-MCE) Heat Management System with models that are not approved. Overheating will occur.
The Side Discharge Passive Heat Kit is not approved for use on 60 or 72 sized appliances.
The Ducted 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 Ducted 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.

Kit Contents
Verify and remove contents from packaging before beginning installation. See Figure 2.1.

Note: The flexible duct used with the Ducted Passive Heat is manufactured and marked to the requirements of UL-181, Class I air duct.

Contents of Ducted Side Discharge Passive Heat Kit (PHSI-MCE)

SIDE DISCHARGE / OPEN TOP DISCHARGE KITS (PHSI-MCE)

DESCRIPTION| SERVICE PART NO.| QTY
12 in. X 8 in. Register Cover| 2560-120| 2
Side Discharge Assembly| 2560-015| 2
Collar| SRV659-125| 2
Flex Air Duct (6” Diameter x 25 ft.)| 659-200| 1
Gear Clamp: Large| SRV662-803| 4

Hurricane Screw

Preparation

Plan the location of the appliance and the warm air duct runs. See Table 3.1.
WARNING! Risk of Fire! DO NOT fold/kink/pinch/ob-struct 6 inch flexible ducts. Appliance could overheat.

AIR DUCT LENGTH

(Measurements in Inches)

SIZE| MIN.| MAX.| DUCT Quantity
36| 28| 150| 2
48| 28| 150| 2
This is the maximum vent run length possible with the included flex duct. Additional flex duct required for longer vent runs. Contact dealer to order.
PHSI-MCE is not approved for 60 and 72 inch models.

T able 3.1 Air Duct Length & Clearances
If alternate heat management systems are used with the Ducted Passive Heat Kit (PHFR-MCE-XX), they must use an outside heat management knockout location on the far left or right of the appliance.

Things to consider:

Electrical Wiring:
It is recommended to maintain wire routing inside the stud pockets to reduce temperatures and visibility of wires.
Construction Materials:
It is recommended to plan ahead to reduce the amount of exposed finishing materials visible through the openings.

Clearance – Sprinkler to Passive Heat
Figure 3.2 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 inches or greater, then there is no 36 inch 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 inches top, 18 inches sides and 6 inches bottom.
DO NOT install a sprinkler head inside a chase that is set up for passive heat.

Clearances to Combustibles
Ducted Passive Heat Side Discharge (PHSI-MCE) Single-Sided or See-Through

WARNING! Risk of Fire! DO NOT allow any combustible or non-combustible objects or materials to be placed where the disruption of airflow in discharge zone could occur. Appliance and combustible materials will overheat.

MINIMUM FRAMING DIMENSIONS

to Ceiling

| ****

2 X 4 Studs

36

| Inches| 16| 10-3/16| 50| 52| 76-1/2| 3-1/2
millimeters| 406| 259| 1270| 1321| 1943| 89

48

| Inches| 16| 10-3/16| 50| 52| 76-1/2| 3-1/2
millimeters| 406| 259| 1270| 1321| 1943| 89

Installation Instructions

Install Assemblies and Flexible Duct – Side Discharge

WARNING! Risk of Fire! Remove ONLY the knockouts required for the specific heat management kits being installed. Appliance and combustible materials will overheat.
WARNING! Risk of Overheating! Both passive heat side discharge assemblies included with kit MUST be installed and operational. Overheating of appliance and combustible materials will occur.
CAUTION! Risk of Cuts, Abrasions or Flying Debris. Wear protective gloves and safety glasses during installation. Sheet metal edges are sharp.
PHSI-MCE kits must be installed on the two inside passive heat knockouts unless a HEAT-OUT-GAS or HEAT-ZONE-GAS will also be installed. Outer knockouts may be used for additional heat management systems (HEAT-OUT-GAS, HEAT-ZONE-GAS). Do not remove the outer knockouts if they will not be used.

Only one passive heat option may be installed on a single appliance. Passive Heat kits without ducts may not be used in conjunction with the Ducted Passive Heat kit.

Remove the two inner heat management knockouts from the top of the appliance by dislodging them with a hammer and then using a screwdriver to remove from the holes. See Figure 5.1 and Figure 5.2. Install collars over the openings using hurricane screws provided in the kit.
Remove the insulation plug from each knockout. Discard. See Figure 9.
Set a collar in each of the holes where the knockouts were removed. See Figure 5.3.
Remove the screws from the heat shield as shown in Figure 5.7. Quantity and location of screws will vary between models.
Bend pull tools and break apart as shown in Figure
Insert pull tool into slots on left and right sides of appliance. See Figure 5.6.
Carefully pull the heat shield out of the appliance as shown in Figure 5.7 and Figure 5.8. Discard heat shield. Repeat procedure on other side if application is on a see-through appliance. WARNING! Risk of Fire! Remove all debris and objects from firebox top and appliance top before operating the appliance.
Inspect for and remove all debris that may have accumulated or objects that may have been placed on the firebox top and appliance top during the installation process. All debris and objects must be removed prior to operation of the appliance. Firebox top and appliance top are shown in Figure 5.9.
Install collars over the openings using hurricane screws provided in the kit. PHSI-MCE kits must be installed on the two inside passive heat knockouts. See Figure 5.10 and Figure 5.11.
Place the side discharge assembly into the wall with the arrows on the nailing tabs facing upward. See Figure 5.13. The height of the side discharge assembly is denoted by the notches in the nailing tabs that are to be lined up with the edge of the header closest to the side discharge assembly. Ensure the side discharge assembly is centered in the wall. Mount side discharge assemblies into wall using drywall framing screws or nails.
Repeat Step 2 to install the second side discharge assembly on the other side of the appliance.
Cut flex venting to appropriate length to run from top of the appliance to the back side of the side dis-charge assembly ensuring there are not any kinks. Be sure that the flex venting is not so tight as to col-lapse where attached to the side discharge assembly and restrict airflow. Refer to Section 3 and Figure 3.1 regarding length and pitch requirements.
WARNING! Risk of Fire! DO NOT fold/kink/pinch/ob-struct 6 inch flexible ducts. Overheating of appliance and combustible materials will occur.
Secure the flex venting to the collars on both the appliance and the bottom of the side discharge assembly using the provided gear clamps. See Figure 5.14-5.17.
Install self-tapping screw through gear clamp into collar. Repeat for all collars. See Figure 5.15.

Finishing Instructions – Side Discharge

Apply wall sheathing material, such as drywall, up to 1/2 inch thick up to the edge of the installed side discharge assembly. See Figure 6.1 and Figure 6.2.
WARNING! Risk of Overheating! DO NOT apply wall sheathing past outside edge of plenum. Overheating of appliance and combustible materials will occur.
Bend over both register cover tabs. See Figure 6.3.
Note : It is permissible to paint the outer wrapping of the flex vent with black paint, if desired. See Figure 6.4.
Install register cover with louvers facing the front of the fireplace (control side) using provided screws. See Figure 6.5.
WARNING! Risk of Fire! DO NOT block passive heat registers! Overheating of appliance and combustible materials will occur.
Facing Material with Side Discharge Register Cov-ers
The passive heat kit register covers are designed to be mounted directly to the drywall surface. Additional facing materials must not be placed behind the regis-ter covers. It is acceptable to place Non-Combustible facing materials up to the edge of the register covers. See Figure 6.6 and Figure 6.7. Consult the appliance Installation Manual to determine maximum facing ma-terial thickness.
Install the required register covers as instructed to complete the installation.

Painting
Side Discharge:
If desired finishing includes a painted register cover, Hearth & Home Technologies recommends using high temperature paint with a minimum of 300 °F (149 °C) con-tinuous exposure rating.

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

Hearth & Home Technologies • PHSI-MCE Instructions • 2560-973 Rev. D • 1/24