Table of Contents
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Recognize safety information. This is the safety--alert symbol
alert to the potential for personal injury.
Understand the signal words DANGER, WARNING, or CAUTION. These words are used with the safety--alert symbol. DANGER identifies the
most serious hazards, those that will result in severe personal injury or death. WARNING signifies a hazard that could result in personal injury
or death. CAUTION is used to identify unsafe practices that could result in minor personal injury or product and property damage.
Installing and servicing heating equipment can be hazardous due to gas and electrical components. Only trained and qualified personnel
should install, repair, or service heating equipment.
Untrained service personnel can perform basic maintenance functions such as cleaning and replacing air filters. All other operations must be
performed by trained service personnel. When working on heating equipment, observe precautions in the literature, on tags, and on labels
attached to or shipped with the unit and other safety precautions that may apply.
Follow all safety codes. In the United States, follow all safety codes including the current edition National Fuel Gas Code (NFGC) NFPA No.
54/ANSIZ223.1. In Canada, refer to the current edition of the National Standard Canada CAN/CGA--B149.1-- and .2--M91 Natural Gas and
Propane Installation Codes (NSCNGPIC). Wear safety glasses and work gloves. Have fire extinguisher available during start--up and adjust-
ment procedures and service calls.
These instructions cover minimum requirements and conform to existing national standards and safety codes. In some instances, these
instructions exceed certain local codes and ordinances, especially those that may not have kept up with changing residential construction
practices. We require these instructions as a minimum for a safe installation.
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Printed in U.S.A.
SAFETY REQUIREMENTS
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Electric Shock Hazard
Turn Off All Power
Before Servicing.
Failure to do so can result
in death, personal injury
and/or property damage.
HUH5
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. When you see this symbol on the furnace and in instructions manuals be
Manufactured by:
International Comfort Products Corporation (USA)
Lewisburg, TN USA 37091
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Fire or Explosion hazard.
This furnace is not designed for use in mobile
homes, trailers or recreational vehicles.
Such use could result in death, bodily injury
and/or property damage.
LP1
2/17/2003
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Table of Contents
Related Manuals for Tempstar HUH5 Series
Summary of Contents for Tempstar HUH5 Series
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Page 1: Table Of Contents
HUH5 SAFETY REQUIREMENTS Recognize safety information. This is the safety--alert symbol . When you see this symbol on the furnace and in instructions manuals be alert to the potential for personal injury. Understand the signal words DANGER, WARNING, or CAUTION. These words are used with the safety--alert symbol. DANGER identifies the most serious hazards, those that will result in severe personal injury or death. - Page 2 START- -UP CHECK SHEET (Keep this page for future reference) Dealer Name: Address: Business Card Here City, State(Province), Zip or Postal Code: Phone: Owner Name: Manual Gas Shut--Off Upstream of Furnace/Drip--Leg? Address: City, State(Province), Zip or Postal Code: Drip--Leg Upstream of Gas Valve? Blower Speed Checked? Model Number: All Electrical Connections Tight?
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Page 3: Safe Installation Requirements
1. Safe Installation Requirements Safety Rules Your unit is built to provide many years of safe and dependable Installation or repairs made by unqualified persons service providing it is properly installed and maintained. However, can result in hazards to you and others. Installation abuse and/or improper use can shorten the life of the unit and MUST conform with local codes or, in the absence create hazards for you, the owner. -
Page 4: Installation
Water may create a condition in which mold can grow in your If the structure will be unattended during cold weather you should home. Certain types of mold have been reported to cause respira- take these precautions. tory problems or other serious health risks. Remedial actions, in- Turn off the water supply to the structure and drain the water cluding immediately drying all wet items, should be taken quickly lines if possible and add an antifreeze for potable water to... - Page 5 Figure 1 Dimensions and Clearances (H8UH5 Models) MINIMUM CLEARANCES TO COMBUSTIBLE MATERIALS FOR ALL UNITS REAR FRONT 3² Recommended For Service 30² 30² min. ALL SIDES Of SUPPLY PLENUM 1² SIDES VENT LEFT SIDE Single Wall Vent 6² Type B--1 Double Wall Vent 1²...
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Page 6: Combustion & Ventilation Air
Horizontal If the furnace is to be suspended from the floor joists in a crawl space or the rafters in an attic, it is necessary to use steel pipe If you purchased a dual--position furnace, it can be installed hori- straps or an angle iron frame to attach the furnace. - Page 7 When sizing grille or louver, use the free area of opening. If Figure 4 illustrates how to provide combustion and ventila- free area is NOT stamped or marked on grill or louver, as- tion air. A minimum of two permanent openings, one inlet and sume a 20% free area for wood and 60% for metal.
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Page 8: Gas Vent Installation
Adjoining rooms can be considered part of an unconfined area if Walls and ceilings exposed to the outside have a continuous, sealed vapor barrier. Openings are gasketed or sealed and there are no doors between rooms. Doors and openable windows are weather stripped and An attic or crawl space may be considered an unconfined space provided there are adequate ventilation openings directly to out- Other openings are caulked or sealed. -
Page 9: Horizontal Venting
Figure 5 Vent Check CARBON MONOXIDE POISONING HAZARD Vent Pipe Draft Hood Failure to follow the steps outlined below for each appliance connected to the venting system being placed Typical Gas into operation, while all other appliances connected to Match Water Heater the venting system are not in operation: 1.Seal any unused openings in the venting system. - Page 10 plate for approved gas type. · Gas input must not exceed the rated input shown on the rating plate. Overfiring will result in failure of heat exchanger and CARBON MONOXIDE POISONING, FIRE AND cause dangerous operation. EXPLOSION HAZARD. · Do not allow minimum supply pressure to vary downward. Failure to follow these instructions can result in Doing so will decrease input to furnace.
- Page 11 MANIFOLD PRESSURE AND ORIFICE SIZE FOR HIGH ALTITUDE APPLICATIONS Table 4 NATURAL GAS MEAN ELEVATION FEET ABOVE SEA LEVEL HEATING VALUE 0 to 2000 to 3000 to 4000 to 5000 to 6000 to 7000 to BTU/CU. FT. 1999 2999 3999 4999 5999 6999...
- Page 12 Figure 7 Typical Gas Piping Clearances Figure 8 Measure from face of orifice to the back side of the manifold. Manual Valve +1.5 29.3 --1.1 ² ² Union Reassemble all parts in reverse order as removed. Be sure to engage the main burner orifices in the proper opening in the burners.
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Page 13: Electrical Wiring
· · Two--stage regulation of LP gas is recommended. Do not use an open flame to test for gas leaks. Fire or explo- sion could occur. Final Check · Correct even the smallest leak at once. · Test all pipe for leaks. ·... -
Page 14: Ductwork And Filter (Upflow/Horizontal)
Control Center Fuse Figure 10 Fan Timer Connections The 24V circuit contains a 5--amp, automotive--type fuse located on control center. (See Figure 10) Any electrical shorts of 24V wir- ing during installation, service, or maintenance may cause fuse to blow. If fuse replacement is required, use only a fuse of identical size (5 amp.) DIP Switch FUSE... -
Page 15: Checks And Adjustments
Inspection Panel on some models Figure 12 Optional Duct Standoff A removal access panel should be provided in the outlet duct when the furnace is installed without a cooling coil. This will allow 20 x 25 Optional smoke or reflected light to be observable inside the casing to indi- cate the presence of leaks in the heat exchanger. - Page 16 NOTE: Adjustment screw cover MUST be placed on gas valve be- Place thermometers in supply and return air registers as fore reading manifold pressure and operating furnace. close to furnace as possible, avoiding direct radiant heat from heat exchangers. For altitudes up to 2000¢, set pressure to value shown in Take readings and compare with range specified on rating Table 2.
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Page 17: Furnace Maintenance
Continuous Fan tap, and has a lower contact rating (8 amps) than the heat and cool taps. When the low speed blower lead is connected to this termi- Connect low speed lead from circulating motor to the “Cont” termi- nal, this will provide low speed blower operation whenever the oth- nal at the electronic fan control. - Page 18 the ignitor begins to warm up. Typical Gas Valve Honeywell Figure 16 · The ignitor glows red--hot for 30 seconds, then turns off. · The igniter stays off for 25 seconds, then begins to warm--up again. Diagnostic Light Manifold · The igniter glows red--hot for 30 seconds, then turns off.