HEARTH HOME technologies FK24 Variable Speed Fan Kit User manual

Hello! I've reviewed the Installation Instructions for the FK24 Variable Speed Fan Kit. This document details how to install the fan, including mounting the fan assembly, connecting the temperature sensor, and wiring for different speed control options. I understand the fan is designed for use with MHSC gas fireplaces and comes with an electrical cord attached. I am ready to answer your questions about the installation and maintenance.
How do I install the fan assembly?

Where should I install the fan speed control box?

Do I need special maintenance for this fan?

10001175 2/17 Rev. A

CERTIFIED

Model FK24 Variable

Speed Fan Kit

Installation Instructions

The optional FK24 fan kit is designed to be installed in

a variety of MHSC gas replaces. Please refer to the In-

stallation Instructions provided with the replace the fan

kit is to be installed in for additional information.

NOTE: Make sure all power to the electrical supply

has been turned off prior to beginning the installa-

tion.

1. Hold the fan assembly so that the mounting bracket

faces downward and the fan motor is furthest away

from the replace. Slide the assembly through the

access door on the left side of the valve control com-

partment.

Turn the assembly ninety degrees around the valve

so that it is parallel to the back. Next rotate the

assembly so that the mounting bracket is turned up

facing the back of the replace. Line up the bracket

mounting holes with the screw studs on the back of

the replace and fasten with #10-24 hex nuts.

2. Insert fan temperature sensor into retainer sensor

box, then secure retainer sensor box onto the burner

base with #10-24 hex nuts. (Fig. 1)

3. (Option A) - Place electronic fan speed control box

on bottom of replace base, lining up mounting holes

with screw studs. Fasten fan speed control box with

#10-24 hex nuts.

(Option B) - The speed control can be installed

in an electrical box at normal switch height for

convenient access.

4. If using existing cord, plug in to the electrical box

(EB1) (See EB1 instructions for installation).

5. For direct wiring remove junction box cover and

disconnect the electrical cord. Remove electrical

knockout on the side of the replace and feed

electrical wires through the side and into the junction

box. Connect ground wire to ground stud located

on the base of box. Black wire from supply should

connect to the variable speed switch. Alternate

speed switch wire connects to temperature sensor.

Alternate lead from sensor connects to fan.

Alternate fan connects back to white supply wire.

NOTE: The FK 24 comes with the electrical cord

attached.

This fan does not need regular maintenance,

however periodic cleaning is required. Check the

area under the control door and in front of the fan

and wipe or vacuum at least once a month during

the operating season.

CFM168

FK24 Inst Front View

07/02/01

CFM168

Burner Base

Fan Retainer Sensor Box

Fan

Fan Tempera-

ture Sensor

Gas

Line

Fan Speed Switch

Valve

Gas

Line

Electrical Box (EB1)

Fig. 1 FK24 installation.

Black

White

Ground

CFM105

FK24 Wiring Dia

07/02/01

A: Speed Control

B: Temperature Sensor

C: Fan

CFM105

Fig. 2 FK24 wiring diagram.

Hearth & Home Technologies

7571 215th Street West, Lakeville, MN 50044