United States Stove Miracle Heat Deluxe User manual

Miracle Heat Deluxe
Model MHD-6 & MHD-8
(save this manual for future reference)
852256B
United States Stove Company
227 Industrial Park Rd. South Pittsburg, TN 37380, USA
Phone: [phone] www.usstove.com
READ ALL INSTRUCTIONS CAREFULLY BEFORE
STARTING THE INSTALLATION OR OPERATING THE
UNIT. FAILURE TO FOLLOW INSTRUCTIONS MAY
RESULT IN PROPERTY DAMAGE, BODILY INJURY,
OR EVEN DEATH.
TO BE USED WITH SOLID FUEL BURNING APPLIANCES ONLY.
(NO EXCEPTIONS)
DO NOT USE THIS UNIT IN A MOBILE HOME OR TRAILER.
(NO EXCEPTIONS)
SAFETY NOTICE: IF THIS UNIT IS NOT PROPERLY INSTALLED, A HOUSE/BUILDING FIRE MAY RESULT. FOR
YOUR SAFETY, CONTACT LOCAL BUILDING OR FIRE OFFICIALS ABOUT PERMITS, RESTRICTIONS, AND
INSTALLATION REQUIREMENTS FOR YOUR AREA.
This unit IS NOT a Listed unit.
This manual is subject to change without notice.
ALL PICTURES SHOWN ARE FOR ILLUSTRATIVE
PURPOSES ONLY. ACTUAL PRODUCT MAY VARY
DUE TO PRODUCT ENHANCEMENT.
CALIFORNIA PROPOSITION 65 WARNING:
This product can expose you to chemicals including benzene,
which is known to the State of California to cause cancer, birth
defects and/or other reproductive harm. For more information, go to
www.P65warnings.ca.gov

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READ ALL INSTRUCTIONS CAREFULLY
1. The installation of this unit must comply with your
local building code rulings. Please observe the
clearances to combustibles (g. 2).
2. Do not install this unit in a mobile home or trailer
(NO EXCEPTIONS).
3. Always connect this unit to a chimney and vent to
the outside. Never vent to another room or inside a
building.
4. WARNING: DO NOT CONNECT this unit to an
aluminum Type B gas vent. This is not safe.
5. CAUTION: DO NOT INSTALL THE MIRACLE HEAT IN A
HORIZONTAL POSITION.
6. The paint used on your appliance may give off
smoke and/or odor during the rst res. This may
occur during the rst dozen res until the paint has
cured. This will end and not reoccur after paint has
cured. Persons with lung conditions or owners of
susceptible domestic pets (such as birds) should
take prudent precautions. Open windows and
doors as needed to clear smoke and odor.
7. Be sure that your chimney is safely constructed and
in good repair. Have the chimney inspected by
the re department or a qualied inspector. Your
insurance company may be able to recommend
a qualied inspector.
8. Creosote or soot may build up in the chimney
connector and chimney and cause a house/
building re. Inspect this unit, the chimney
connector, and chimney twice monthly during
the heating season and clean if necessary (see
Maintenance & Service Hints, page 5).
9. Do not install this accessory on a stove, heater,
or replace pipe that has poor draft or “smokes.”
The Miracle Heat unit will aggravate this condition.
Correct the draft situation BEFORE installing.
10. Do not use a Miracle Heat that has a smaller
diameter than the ue outlet on your stove, heater,
or replace.
11. Do not connect duct work to the appliance. Do
not restrict the air movement inside or through the
appliance.
12. Do not install on a stove, heater, or replace with
an operating temperature of less than 350 degrees
Fahrenheit.
13. Do not install the appliance closer than 12” to
any combustible object or material. Maintain all
clearance requirements of the heating appliance
(see the appliance’s owner’s manual.)
14. Use at least three (3) sheet metal screws at each
connection to secure the appliance to the ue
pipe.
15. While in operation, keep the soot remover scraper
knob pulled out at least 5 inches from the front of
the unit.
16. Do not touch this unit while it and the heating
appliance is in operation. The surfaces are hot and
can cause severe burns. Keep children, clothing,
and combustible materials away from the unit.
17. Do not allow the power cord to touch any hot
surfaces. Keep the power cord at least 12” away
from the ue pipe
18. Use only with a grounded electrical socket. Consult
a qualied licensed electrician to provide a properly
grounded socket. Do not modify the electrical plug
in any way. Dangerous or damaging conditions
could result. Do not plug into an electrical outlet
that is not grounded or that is operated by a wall
mounted on/off switch.
19. The Miracle Heat MUST be plugged into an
electrical outlet whenever the stove is in use. Failure
to do so will likely result in damage to the electrical
components of the appliance and could result in
shock or electrical re
20. Keep the unit plugged in at all times. Do Not
operate the stove if the Miracle Heat is inoperative.
Doing so will damage the electrical components.
Safety Instructions
CAUTION: SHOCK HAZARD
• Always disconnect plug from electrical source
before ad justing or attempting repairs.
• Always disconnect plug by grasping plug body –
Do not pull on cord to disconnect from wall outlet.
• Use only with properly grounded outlet. Do not
alter plug.
NOTE: A PROFESSIONAL, LICENSED HEATING AND
COOLING CONTRACTOR SHOULD BE CONSULTED IF
YOU HAVE QUESTIONS REGARDING THE INSTALLATION.

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Refer to diagram and parts lists at back of this manual
1. Check the Owner’s Manual for your stove and do
not reduce any minimum clearances which may
be listed there. Use only Type A (all-fuel) or lined
masonry chimneys to connect to your stove. Check
your local and state building codes for proper and
safe installation.
2. If you have determined your chimney to have
an inadequate draft, overcome that deciency
before installing your appliance. Your chimney
should be capable of developing at least 0.06 w.c.
(measured in water column) draft before installing a
Miracle Heat. After installation, the chimney should
develop at least 0.045 w.c. as measured below
the Miracle Heat All stove pipe above or below
your Miracle Heat must be 24-gauge or heavier
to provide adequate support. Any horizontal run
of pipe must pitch upward toward the chimney at
least 1/4” per foot of horizontal run. All stove pipe
and/or elbow joints must be secured by at least
three (3) sheet-metal screws.
3. Any elbow installed below your Miracle Heat should
be of the non-adjustable type.
4. If your stove requires a hand damper (wood and
coal stoves), install BELOW the Miracle Heat.
5. Note: The power cord must not contact any part
of the stove, chimney connector(s) or the Miracle
Heat components. Secure the power cord to keep
it away from hot surfaces or their proximity.
6. The Miracle Heat pipe size must be the same or
larger diameter than the ue outlet of the heating
appliance.
7. All electric supply cord connections shall comply
with the requirements of local authorities having
jurisdiction over such matters.
8. Overring this unit is not recommended. Refer to
your heating appliance owner’s manual regarding
overring.
9. The Miracle Heat must be installed in your ue pipe
vertically. It may be installed with the crimped end
either up or down, according to your installation
needs.
10. The Miracle Heat should be installed as close to the
ue outlet as possible, but no closer than 15” from
the top or back as shown in gure 2.
11. Do Not install the Miracle Heat closer than 18” from
any combustible material.
12. Use at least three (3) sheet metal screws at each
connection to secure the Miracle Heat to the ue
pipe.
13. Keep the power cord at least 12” away from the
ue pipe.
NOTICE: In case of a power outage, your stove may
be kept in use with low heat res provided you remove
the rear panel of the Miracle Heat (fan and electrical
components).
Installation Instructions

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Warning: Explosion Hazard
• Never use chemicals, gasoline, gasoline-type lantern fuel, kerosene, charcoal lighter uid, or similar
ammable liquids to start or “freshen-up ” a re in any heating appliance.
• Keep all ammable liquids, especially gasoline, out of the vicinity of any heating appliance — whether in
use or in storage.
Operating Safety Precautions
1. Never build extremely large res in your stove as damage to the appliance or smoke leakage may result .
2. WARNING: Miracle Heat and heating appliances are HOT while in operation . Keep children, clothing, and
Furniture away. Contact may cause skin burns. Do not touch the heat reclaimer or appliance after ring
until it has cooled.
3. Inspect stove pipe and heat exchanger tubes every 60 days. Replace immediately if stove pipe or tubes
are rusting or leaking smoke into the room.
CAUTION: HOUSE FIRE HAZARDS
• Floor protector must extend underneath Miracle Heat.
• Overring may cause a house re, you are overring. If the heater, chimney connector, or Miracle Heat
glows red. Overring may damage the tubing air seals in the heat reclaimer and cause unsafe operating
conditions.
Operating Instructions
NOTICE: Before rst use , review the safety precautions and installation instructions to ensure that all of the
procedures and steps have been properly completed.
Build a small re in your stove and gradually build up to normal operating condition. Some smoke and odor may
be evident during initial operation. This will cease as the paint bakes and cures.
The Miracle Heat is designed to be automatic and will turn on when the ue pipe reaches the factory set
temperature. It will also turn off automatically when the ue temperature falls below the factory set temperature.
A toggle switch on the rear of the Miracle Heat allows the fan to operate before the thermostat activates. Do
not attempt to alter the thermostat in any way. This not only a convenience feature, but an important safety
device as well. Keep the electrical cord plugged into a live circuit at all times except during servicing to prevent
overheating and possible damage and/or malfunctioning of the unit. Do not connect this unit to a switched
circuit.
WARNING: Slow burning res and extended use may cause excessive creosote buildup . Ignition of creosote
buildup or overring may cause a chimney re . Chimney res burn extremely hot and may ignite surrounding
materials . In case of a chimney re call the re department immediately .
CAUTION: Soot scraper knob and connecting rod are hot during operation and could cause severe burns . Use
protective equipment when operating or wait until unit has cooled before operating .
After each ring, operate the soot scraper (pull knob in and out) to clean the heat exchanger tubes.
Keep soot scraper knob pulled out at least 5 inches from the face of the unit while in operation.

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CLEANING
Periodic cleaning of the Miracle Heat is recommended. Inspect and clean at least three times during the heating
season. Remove the unit and clean any ash or creosote from the pipes. Vacuum or blow any dirt that has
accumulated in the outer housings of the Miracle Heat.
FAN MOTOR
• Remove the rear panel.
• Remove any accumulations of dirt or dust.
• Reassemble the unit following the diagram in the back of this manual.
CHIMNEY DRAFT
Draft is a function of the chimney, not the heating appliance. Smoke spillage into the house or excessive buildup
of condensation or creosote in the chimney are warnings that the chimney is NOT functioning properly. Correct
the problem before using the heating appliance or installing the Miracle Heat. Following are some possible
causes for improper draft.
1. The connector stovepipe may be pushed into the chimney too far, stopping the draft.
2. If the chimney temperature is too cool, water will condense in the chimney and run back into the appliance.
Creosote formation will be rapid and may block the chimney. Operate the appliance at a re level high
enough to keep the chimney warm to prevent condensation from forming.
3. If the re burns well but sometimes creates excess smoke or burns slowly, it may be caused by the chimney
top being lower than another part of the house or a nearby tree. The wind blowing over a house or tree, falls
on top of the chimney like water over a dam, beating down the smoke. The top of the chimney should be
at least three (3) feet above the roof and be at least two (2) feet higher than any point of the roof within ten
(10) feet.
CREOSOTE – FORMATION AND REMOVAL
Slow-burning wood produces tar and other organic vapors which combine with expelled moisture to form
creosote. Creosote vapors condense in the relatively cool chimney ue of a slow-burning re. As a result, creosote
residue accumulates on the ue lining. If ignited, this creosote creates an extremely hot re which may ignite
surrounding materials resulting in a building re.
If creosote has accumulated, it should be removed. Failure to remove creosote may result in ignition and may
cause a house/building re. Creosote may be removed using a chimney brush or other commonly available
materials from your local hardware retailer. Remove the Heat Reclaimer before cleaning the chimney or ue
pipe.
CHIMNEY INSPECTIONS
The chimney connector and chimney should be inspected at the beginning of and at least twice a month during
the heating season to determine if a creosote buildup has occurred.
Chimney res burn very hot. If the chimney connectors or the Miracle Heat should glow red, reduce the re by
closing the damper and the appliance draft control and immediately call the re department.
Maintenance & Service Hints
WARNING: A chimney re may cause ignition of wall studs or rafters which were assumed to be a safe distance
fro m the chimney. If a chimney re has occurred , have your chimney inspected by a qualied expert before
using again .
A re in your heating appliance may be smothered by pouring a large quantity of coarse salt, baking soda, or
cool ashes on top of the re.

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Ordering Repair Parts
When ordering missing or replacement parts, always
give the Model Number of the unit, Part Number,
and Part Description. Use the illustration and parts list
provided to identify parts.
Top Rear View
Bottom Front View
Key Part# Description Model Qty
1892356 Trim MHD6 1
892364 MHD8
2892353 Heat Exchanger Assembly MHD6 1
892361 MHD8
3 892357 Blade, Fan Both 1
4 80679 Motor, Fan Both 1
5 80232 Cord, Power Supply Both 1
6892355 Rear Panel MHD6 1
892363 MHD8
7 892358 Motor Bracket Both 1
8 80682 Thermostat Wires Both 2
9 80249 Thermostat Both 2
10 892354 Outside Case MHD6 1
892352 MHD8
11 80109 Bushing, Strain Relief Both 1
12 892359 Junction Box Cover Both 1
13 80681 Toggle Switch Both 1
14 892360 Knob, Scraper Both 1
NOTE: Designate Model (MHD6 or MHD8) when
ordering parts
IN ORDER TO MAINTAIN WARRANTY, COMPONENTS MUST BE REPLACED USING ORIGINAL MANUFACTURERS PARTS
PURCHASED THROUGH YOUR DEALER OR DIRECTLY FROM THE APPLIANCE MANUFACTURER. USE OF THIRD PARTY
COMPONENTS WILL VOID THE WARRANTY.
Attention!
Allow the appliance to completely cool before
performing any maintenance.

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Electrical Diagram
BLACK
WHITE
BLACK
WHITE
GREEN
RED RED
SNAP DISK SENSOR
TOGGLE SWITCH
115VAC
MOTOR FAN ASSEMBLY
WARNING: Risk of Electrical Shock
Always make certain the appliance is unplugged from the power source before performing service.

United States Stove Company
227
Industrial Park Rd.,
South Pittsburg, TN 37380
PH: [phone]
www.usstove.com
How To Order Repair Parts
THIS MANUAL WILL HELP TO OBTAIN EFFICIENT, DEPENDABLE SERVICE FROM THE HEATER, AND
WILL ENABLE THE CORRECT REPAIR PARTS TO BE ORDERED.
KEEP IN A SAFE PLACE FOR FUTURE REFERENCE.
WHEN WRITING, ALWAYS GIVE THE FULL MODEL NUMBER WHICH IS ON THE NAMEPLATE ATTACHED
TO THE BACK OF THE HEATER.
WHEN ORDERING REPAIR PARTS, ALWAYS GIVE THE
FOLLOWING INFORMATION AS SHOWN IN THIS LIST:
1. The PART NUMBER: _______________________________________________________________
2. The PART DESCRIPTION: ___________________________________________________________
3. The MODEL NUMBER: _____________________________________________________________
4. The SERIAL NUMBER: ______________________________________________________________