Monessen Hearth BLOTMC User Manual

Before You Start
NOTE: This instruction sheet is ONLY for models listed
below. Carefully inspect the contents for shipping dam-
age. If any parts are missing or damaged, immediately
inform the dealer from whom you purchased the blower.
Models: GCUF, MCUF, BUF36/42, VFF32/36,
LCUF32/36/42CR-B
Kit Contents:
(1) Blower Assembly w/ Velcro Strips
(1) Thermostat Sensor w/ Hi-temp Wire
(1) Speed Control
(1) Speed Control Bracket
(1) Air Shield
(1) Wire Tie
(1) Hardware Package
(1) Instruction Sheet
Tools Required:
• Short Handle Phillips Screwdriver
• Small Jeweler’s Style Screwdriver
• Pliers or 1/4” Wrench
Electrical Grounding Instructions:
This appliance is equipped with a three-prong (ground-
ing) plug for your protection against shock hazard and
should be plugged directly into a properly grounded
three prong receptacle.
IMPORTANT: Always check local building codes. This in-
stallation must comply with local regulations as well as
the National Electric Code.
Wiring Instructions
1. Before installing the blower, wire the receptacle into an
electrical circuit. This should be done before framing
the replace. Wire with minimum 60° C wire in accor-
dance with prevailing codes.
2. Remove the external junction box cover by removing
the screw from the left side of the outside rebox wall.
Junction box was installed at the factory.
3. The junction box cover has a factory installed “romex”
style strain relief connector. After connecting the wires,
route the wire leads through this connector. Refer to
the wiring diagram in Figure 1.
Note: Figure 2 shows an alternative wiring method if a
remotely located switch is desired.
FP1912
Junction box wiring
8/08
Junction Box
120V AC
60Hz
Factory Supplied
Not Supplied
Figure 1 - Junction Box Wiring Diagram
The BLOTMC blower is designed for use with vent
free replaces manufactured by Hearth & Home
Technologies only.
Monessen • BLOTMC Installation Manual • 93D0005 • Rev H • 01/2020
Blower Installation Instructions
Model: BLOTMC
WARNING: Turn appliance OFF and allow to cool before servicing. Only a qualied service
person should service and repair this rebox. A qualied service person must connect
and disconnect the rebox to/from the gas supply. Follow all local codes.
WARNING
CAUTION! Electrical connections should only be performed
by a qualied licensed electrician. Main power supply must
be turned o before connecting fans to the main electrical
power supply or performing service.
WARNING
WALL SWITCH
OR RHEOSTAT
110V SUPPLY
MINIMUM 14 -2
JUNCTION BOX
POWER CORD
JUMPER
WHT
BLK
BLK
BLK
WHT
WHT
BLOWER
WHT
BLK
Figure 2 - Wall Switch Wiring Diagram

Monessen Hearth BLOTMC Specifications

General

Brand	Monessen Hearth
Model	BLOTMC
Category	Blower
Language	English

Summary

Blower Installation Instructions

Before You Start

Provides initial steps, model verification, and damage inspection before installation.

Electrical Grounding Instructions

Details the three-prong plug and proper grounding for shock hazard protection.

Kit Contents

Lists all components included in the blower installation kit.

Tools Required

Specifies the tools needed for the installation process.

Wiring Instructions

Guides on wiring the receptacle, using the junction box, and strain relief connector.

Electrical Connection Safety

Emphasizes qualified electricians and turning off main power before connecting.

Blower Compatibility Warning

States the BLOTMC blower is for Hearth & Home Technologies vent-free fireplaces only.

Local Code Compliance

Stresses compliance with local regulations and the National Electric Code.

Blower Installation Methods

Install with Blower Mounting Bracket

Instructions for units with a pre-installed blower mounting bracket using Velcro strips.

Install without Mounting Bracket

Steps for installing the blower using Velcro directly to the firebox wall and floor.

Install Variable Speed Control

Mounting the Speed Control Bracket

Attaching the blower switch bracket to the speed control with screws.

Positioning and Securing Speed Control

Placing the switch assembly in the lower left corner and securing it with screws.

Variable Speed Control for BUF Models

Adjusting Speed Control for BUF Models

Instructions for removing the knob, switch bracket, and securing the assembly for specific BUF models.

Install Thermal Sensor (GCUF, MCUF)

Mounting Thermal Sensor

Steps for inserting wires, seating the sensor, and securing it with screws.

Drilling for Sensor Attachment

Instructions for drilling holes for sensor attachment on specific older BUF models.

Install Thermal Sensor (BUF Models)

Install Thermal Sensor (Other Models)

Instructions for installing the thermal sensor on all other Monessen burner types.

Blower Wiring Connections

Connecting Wiring Diagram

Guidance on connecting wires as per the wiring diagram and plugging in the power cord.

Wire Harness Safety

Warning to arrange wires to prevent contact with blower fan blades.

Finishing Installation Steps

Testing Blower Operation

Steps for testing blower function, adjusting speed settings, and final operation checks.

Install Thermal Sensor (VFF Series)

Mounting Thermal Sensor for VFF Series

Instructions for installing the thermal sensor in the VFF series, including wire routing.

IPI Control Installation

Mounting Variable Speed Control

Steps for bending the mounting tab and attaching the speed control for IPI systems.

Variable Speed Control Installation (Millivolt)

Attaching Speed Control for Millivolt

Instructions for attaching the variable speed control to the control panel for millivolt systems.

Finishing Installation (VFF Series)

Wiring and Securing

Connecting wiring, using clips, and plugging into the junction box.

Install Thermal Sensor (LCUF Series)

Preparing for Sensor Installation

Steps to remove burners, firebrick, and access panels for sensor installation.

Mounting Thermal Sensor for LCUF Series

Installing the sensor in a large hole and securing it with a screw near the opening.

Wiring and Cable Management

Adding wire length, routing wires, and attaching them as per the wiring diagram.

Blower Installation (LCUF Series)

Installing Blower Through Rear Panel

Instructions for installing the blower through the rear access panel and routing wires.

Variable Speed Control Installation (LCUF Series)

Attaching Speed Control to Side Panel

Securing the variable speed control to the side access panel and routing wiring.

Finishing Installation (LCUF Series)

Final Wiring and Reassembly

Confirming wire routing, plugging into junction box, and reinstalling panels and components.