Hearth & Home Technologies 21M-ACC User Manual

September 1, 2008

7039-131F

Page  7

R

Exterior  conditions  such  as  roof  line,  surrounding  trees, 

prevailing  winds  and  nearby  hills  can  influence  stove 

performance.  Your local dealer is the expert in your geographic 

area and can usually make suggestions or discover solutions 

that will easily correct your flue problem.

Location  of  the  appliance  and  chimney  will  affect  perfor-

mance.   As  shown  in 

Figure  6.1  on  page  6  the  chimney 

should:
  •  Be installed through the warm space enclosed by the 

building envelope.  This helps to produce more draft, 

especially during lighting and die down of the fire.

  •  Penetrate the highest part of the roof.  This minimizes 

the affects of wind turbulence and down drafts.

  •  Consider  the  appliance  location  in  order  to  avoid 

floor and ceiling attic joists and rafters.

The venting system consists of a chimney connector (also 

known as stove pipe) and a chimney.  These get extremely 

hot  during  use.    Temperatures  inside  the  chimney  may 

exceed 2000°F (1100°C) in the event of a creosote fire.  To 

protect against the possibility of a house fire, the chimney 

connector and chimney 

maintained.  An approved thimble must be used when a 

connection is made through a combustible wall to a chimney.  

A chimney support package must be used when a connection 

is  made  through  the  ceiling  to  a  prefabricated  chimney.  

These accessories are 

absolutely necessary to provide 

safe  clearances  to  combustible  wall  and

 

ceiling  material.  

Follow  venting  manufacturer’s clearances  when  installing 

venting system.

To be sure that your appliance burns properly, the chimney 

draft (static pressure) should be approximately -.04 inch water 

column (W.C.) during a low burn and -.10 inch W.C. during a 

high burn, measured 6 inches (152mm) above the top of the 

appliance after one hour of operation at each burn setting.

NOTE:  These are guidelines only, and may vary somewhat 

for individual installations.

Before beginning the installation be sure that the following 

tools and building supplies are available.

Reciprocating saw

Pliers

Hammer

Phillips Head Screwdriver

Flat Blade Screwdriver

Plumb Line

Level

Tape Measure

Framing Material

Hi-Temp Caulking Material

Gloves

Framing Square

Electric Drill & Bits (1/4”)

Safety Glasses

1/2 in. - /4 in. length, #6 or 

#8 self drilling screws (need  

per pipe section connection)

1.

Place the appliance in a location near the final 

installation area and follow the procedures below:

2.

Open the appliance and remove all the parts and 

articles packed inside the Component Pack.  Inspect 

all the parts and glass for shipping damage.  Contact 

your dealer if any irregularities are noticed.

3.

All safety warnings have been read and followed.

4.

This Owner’s Manual has been read.

5.

Floor protection requirements have been met.

6.

Venting is properly installed.

7.

The proper clearances from the appliance and chim-

ney to combustible materials have been met.

8.

The masonry chimney is inspected by a professional 

and is clean, or the factory built metal chimney is 

installed  according  to  the  manufacturer’s  instruc-

tions and clearances.

9.

The chimney meets the required minimum height.

10.

All labels have been removed from the glass door.

11.

A  power  outlet  is  available  nearby  if  installing 

optional blower assembly.

•  Do NOT connect this unit to a chimney flue 

servicing another appliance.

•  Do NOT connect to any air distributon duct 

or system.

May allow flue gases to enter the house.

Inspect appliance and components for damage. 

Damaged parts may impair safe operation.

•  Do NOT install damaged components.

•  Do NOT install incomplete components.

•  Do NOT install substitute components.

Report damaged parts to dealer.