halogen type refrigerants
cleaning solutions (such as perchloroethylene) printing inks
paint removers varnishes hydrochloric acid cements and glues
construction, the clearance between the door and door frame is usually adequate to satisfy this ventilation requirement.
FURNACE SUSPENSION
If suspending the furnace from rafters or joists, use 3/8" threaded rod and 2”x2”x1/8” angle iron as shown below. The length of rod will depend on the application and the clearances necessary.
antistatic fabric softeners for clothes dryers and masonry acid washing materials
• | Seal off a |
| area frequently contaminated by any of the above |
| substances. This protects the |
| from airborne contaminants. To ensure that the |
| enclosed |
| of combustion air, vent from a nearby uncontaminated |
| room or from outdoors. Refer to the Section V, |
| Combustion and Ventilation Air Requirements for details. |
• | If the furnace is used in connection with a cooling unit, |
| install the furnace upstream or in parallel with the cooling |
| unit. Premature heat exchanger failure will result if the |
| cooling unit is placed ahead of the furnace. |
3/8" DIAMETER THREADED ROD (6 PLACES)
HOLD DOWN
NUTS
SUPPORT
NUTS
2"X2"X1/8"
ANGLE IRON
(3 PLACES)
PROVIDE 8" MINMUM CLEARANCE BETWEEN
CENTER ROD AND FURNACE CABINET
TO ALLOW FOR CIRCULATOR BLOWER REMOVAL
ASSURE FURNACE IS LEVEL FROM
END TO END AND HAS A SLIGHT
FORWARD TILT WITH THE FRONT
OF THE FURNACE
BELOW THE BACK OF THE FURNACE
POSITION AS CLOSE AS POSSIBLE | TILT OUTWARD TO ALLOW FOR | |
DOOR AND CIRCULATOR BLOWER | ||
TO BLOWER DECK TO ALLOW FOR | ||
REMOVAL | ||
CIRCULATOR BLOWER REMVOAL | ||
|
• | If the furnace is installed in a residential garage, position |
| the furnace so that the burners and ignition source are |
| located not less than 18 inches (457 mm) above the floor. |
| Protect the furnace from physical damage by vehicles. |
• | If the furnace is installed horizontally, the furnace access |
| doors must be vertical so that the burners fire horizontally |
| into the heat exchanger. Do not install the unit with the |
| access doors on the “up/top” or “down/bottom” side of |
| the furnace. |
CLEARANCES AND ACCESSIBILITY
Installations must adhere to the clearances to combustible mate- rials which this furnace has been design certified to. The mini- mum clearance information for this furnace is provided on the unit’s clearance label. These clearances must be permanently main- tained. Clearances must also accommodate an installation’s gas, electrical, and drain trap and drain line connections. If the alternate combustion air intake or vent/flue connections are used additional clearance must be provided to accommodate these connections. Refer to Section IX, Vent Flue Pipe and Combustion Air Pipe for details. NOTE: In addition to the required clearances to combus- tible materials, a minimum of 24 inches service clearance must be available in front of the unit.
T O P
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S ID E | S ID E |
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| U pflow |
| C ou nte rflow | H orizon tal | ||
Suspended Furnace
EXISTING FURNACE REMOVAL
NOTE: When an existing furnace is removed from a venting system serving other appliances, the venting system may be too large to properly vent the remaining attached appliances.
The following vent testing procedure is reproduced from the American
National Standard/National Standard of Canada for
venting system placed in operation, while any other appliances con- nected to the venting system are not in operation:
a.Seal any unused openings in the venting system;
b.Inspect the venting system for proper size and horizontal pitch, as required by the National Fuel Gas Code, ANSI Z223.1 or the CSA B149 Installation Codes and these instructions. Determine that there is no blockage or restriction, leakage, corrosion and other deficien- cies which could cause an unsafe condition;
c.In so far as practical, close all building doors and windows and all doors between the space in which the appliance(s) connected to the venting system are located and other spaces of the building. Turn on clothes dryers and any appliance not connected to the venting sys- tem. Turn on any exhaust fans, such as range hoods and bathroom exhausts, so they shall operate at maximum speed. Do not operate a summer exhaust fan. Close fireplace dampers;
d.Follow the lighting instructions. Place the appliance being inspected in operation. Adjust thermostat so appliance shall operate continu- ously;
e.Test for draft hood equipped spillage at the draft hood relief opening after 5 minutes of main burner operation. Use the flame of a match or candle;
A furnace installed in a confined space (i.e., a closet or utility room) must have two ventilation openings with a total minimum free area of 0.25 square inches per 1,000 BTU/hr of furnace input rating. Refer to Product Data Book applicable to your model* for minimum clearances to combustible surfaces. One of the ventilation open- ings must be within 12 inches of the top; the other opening must be within 12 inches of the bottom of the confined space. In a typical
f.After it has been determined that each appliance connected to the venting system properly vents when tested as outlined above, re- turn doors, windows, exhaust fans, fireplace dampers and any other gas burning appliance to their previous conditions of use;
g.If improper venting is observed during any of the above tests, the common venting system must be corrected.
*NOTE: Please contact your distributor or our website for the applicable product data book referred to in this manual.
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