Instruction/ maintenance manual of the product GHS8 Goodman Mfg
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These furnaces comply with requirements embodied in the American National St andard / National S tandard of Canada ANSI Z21.47·CSA-2.3 Gas Fired Central Furnaces. RECOGNIZE THIS SYMBOL AS A SAFETY PRECAUTION. A TTENTION INST ALLING PERSONNEL As a professional installer you have an obligation to know the product better than the customer .
2 IO-242C 05/05 T able of Contents I. W arnings .................................................................................................................... ...................................................... 3 T O T HE O WNER .............
3 IO-242C 05/05 T able of Contents XII. Start-up Procedure and Adjustment ......................................................................................... ................................ 2 1 F URNACE O PERA TION .............................
4 IO-242C 05/05 WAR NI NG S HOULD OVER HEATING OCCUR OR THE G AS SUPPLY FAIL TO S HUT OFF, TURN OFF THE MANUAL GAS SHUTOFF VALVE E X TERNAL TO THE FURNACE BEFO RE TURNING OFF THE ELECTRICAL SUPPLY.
5 IO-242C 05/05 WARN I NG T O PREVENT POSSI BLE P ROP ERTY DAMAGE, PERSONAL INJURY OR DEATH DUE TO ELECTRICAL SHOCK, THE FURNACE MUST BE LOCATED TO PROTECT THE EL ECTR ICAL COM PON ENTS FR OM WATER . WARN I NG T HIS UNIT MUST NOT BE USED AS A "CO NSTRUCTION HEATER" DURING THE FINISHING PHASES O F CONSTRUCTI ON ON A NE W STRUCTURE.
6 IO-242C 05/05 • Provisions must be made for venting combustion products outdoors through a proper venting system. The length of flue pipe could be a limiting factor in locating the furnace. • Ensure adequate combustion air is available for the furnace.
7 IO-242C 05/05 Refer to subbase instructions for installation details. Follow the instructions with the subbase for proper installation. Do not install the furnace directly on carpeting, tile, or other combustible material other than wood flooring.
8 IO-242C 05/05 If this furnace is to be installed in the same space with other gas appliances, such as a water heater , ensure there is an adequate supply of combustion and ventilation air for the other appliances. Refer to the latest edition of the National Fuel Gas Code NFP A 54/ ANSI Z223.
9 IO-242C 05/05 Space, Unconfined. For purposes of this Code, a space whose volume is not less than 50 cubic feet per 1,000 BTU per hour of the aggregate input rating of all appliances installed in that space.
10 IO-242C 05/05 4. When ducts are used, they shall be of the same cross- sectional area as the free area of the openings to which they connect. The minimum dimension of rectangular air ducts shall not be less than 3 inches.
11 IO-242C 05/05 Venting THIS FURNACE IS NOT DESIGN CERTIFIED TO BE HORIZONT ALL Y VENTED. Sup ply Air Upflow Rotated Induced Draft Blower T o rotate the induced draft blwer counterclockwise, proceed as follows: 1. Disconnect electrical power from the furnace.
12 IO-242C 05/05 Termination 10 Feet Or Less From Ridge, Wall or Parapet Termination More Than 10 Feet From Ridge, Wall or Parapet C HECK 2 - A NY SOLID OR LIQUID FUEL APPLIANCES VENTED INTO THIS CHIMNEY CHANNEL Solid fuel appliances include fireplaces, wood stoves, coal furnaces, and incinerators.
13 IO-242C 05/05 C HECK 3 - C HIMNEY C ROWN C ONDITION . Damage from condensate usually shows up first in the crown. If any of the following trouble signs are present, the condition of the crown is not satisfactory: a) Crown leaning b) Bricks missing c) Mortar missing d) Tile liner cracked e) No tile liner f ) Salt staining at mortar joints.
14 IO-242C 05/05 • If the combustion air supplied to the furnace will be contaminated with compounds containing chlorine or fluorine, a liner of AL294C stainless steel should be used.
15 IO-242C 05/05 CAUTION L AB EL ALL WIRES P RIOR TO DISCO NNECTI O N WHEN SE RVICING CO NTRO LS. W IRING ERROR S CAN CAUSE I MPROPER AND DAN GEROUS OPERATION .
16 IO-242C 05/05 WARNING T O AVOID THE RISK O F I NJURY, ELECTRICA L SHOC K OR D EATH, THE FURNACE MUST BE ELECTRICALLY GROUNDED IN ACCO RDANCE W ITH LOC AL CODES O R, IN THEIR ABSENCE, WITH THE LATEST E D ITION OF THE N ATIONAL E LECTRIC C ODE.
17 IO-242C 05/05 24 V AC H UM 1. 24 V AC Hum - A ¼” piggy back quick connect terminal on the pressure switch provides 24 V AC humidifier control. This terminal will be powered any time the pressure switch is closed. T o connect 24 V AC hum, connect 24vac line of humidifier to piggyback on the pressure switch.
18 IO-242C 05/05 using a heating value of approximately 1,000 Btu/hr , and should not normally require change. Most cases will not require a change at altitudes up to 7,500 feet. For use at altitudes in excess of 4,500 feet, refer to the following table for maximum input rates based on altitude.
19 IO-242C 05/05 This unit is configured for natural gas. The appropriate manufacturer’s propane gas conversion kit, must be applied for propane gas installations. Refer to the “Propane Gas and/or High Altitude Installations” section for details.
20 IO-242C 05/05 C OUNTERFLOW I NSTALLATIONS When the gas piping enters through the left side of the furnace, the installer must supply a straight pipe to reach the exterior of the furnace. A ground joint union, drip leg, and manual shutoff valve must also be supplied by the installer .
21 IO-242C 05/05 3/8" 1/2" 5/8" 3/4" 7/8" 1-1/8" 1 /2" 3/4" 1" 1-1/4" 1-1 /2" 10 39 92 199 3 29 501 935 275 567 1,071 2,20 5 3,307 20 26 62 131 2.
22 IO-242C 05/05 3. Set the room thermostat to the lowest possible setting. 4. Remove the burner compartment door . NOTE: This furnace is equipped with an ignition device which automatically lights the burner . Do not try to light the burner by hand. 5.
23 IO-242C 05/05 5. Turn OFF gas to furnace at the manual shutoff valve and disconnect manometer . Reinstall plug before turning on gas to furnace. 6. Turn OFF any unnecessary gas appliances started in step 3. W HITE -R ODGERS 36G22 G AS V ALVE The line pressure supplied to the gas valve must be within the range specified below .
24 IO-242C 05/05 G AS M ANIFOLD P RESSURE M EASUREMENT AND A DJUSTMENT CAUTI ON T O PREVENT UNRE LI ABLE OP ERATION OR EQUIPMENT DAMAGE, THE GAS MANIFOLD PRESSURE MUST BE AS SPECIFIED ON THE UNIT RATING PLATE. O NLY MINOR ADJ USTMENTS SHOULD BE MADE BY ADJUSTING THE GAS VALVE PRESSURE REGULATO R.
25 IO-242C 05/05 T EMPERATURE R ISE Air temperature rise is the temperature difference between supply and return air . The proper amount of temperature rise is usually obtained when the unit is operated at the rated input with the “as shipped” blower speed.
26 IO-242C 05/05 C he ck th e bu rn e r fla m e s fo r: 1. G ood ad justm ent 2. Stable, soft and blue 3. N o t c u r lin g, flo atin g, o r lifting o ff. Burner Flame A UXILIARY L IMIT C ONTROL Auto reset limits are located on or near the blower . T o access this auxiliary limit, disconnect the electrical power and remove the blower door .
27 IO-242C 05/05 Use the following precautions during furnace installation and servicing to protect the integrated control module from damage. By putting the furnace, the control, and the person at the same electrostatic potential, these steps will help avoid exposing the integrated control module to electrostatic discharge.
28 IO-242C 05/05 U PRIGHT F ILTER R EMOVAL T o remove filters from an external filter rack in an upright upflow installation, follow the directions provided with external filter rack kit. Clean, wash and dry a permanent filter . When using a metal filter , both sides should be sprayed with a dust adhesive as recommended on adhesive container .
29 IO-242C 05/05 1 Integrated control module will automatically attempt to reset from lockout after one hour . 2 LED Flash code will cease if power to the control module is interrupted through the disconnect or door switch.
30 IO-242C 05/05 T ROUBLESHOOTING C HART Fault Description(s) Symptoms of Abnormal Operation 4 4 FLASHES Associated LED Code 2 • Circulator blower runs continuously . No furnace operation. • Integrated control module diagnostic LED is flashing FOUR (4) flashes.
31 IO-242C 05/05 Wiring Diagram for GMS8/GDS8/GHS8 T O 1 1 5 V A C / 1 Ø / 6 0 H Z P O W E R S U P P L Y W I T H J U N C T I O N B O X G N D L I N E - N L I N E H D O O R S W I T C H P R O P E R L Y P O L A R I Z E D A N D G R O U N D E D . S E R V I C I N G .
32 IO-242C 05/05 NOTE: SPECIFICA TIONS AND PERFORMANCE DA T A LISTED HEREIN ARE SUBJECT TO CHANGE WITHOUT NOTICE Quality Makes the Difference! All of our systems are designed and manufactured with the same high quality standards regardless of size or efficiency .
An important point after buying a device Goodman Mfg GHS8 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Goodman Mfg GHS8 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Goodman Mfg GHS8 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Goodman Mfg GHS8 you will learn all the available features of the product, as well as information on its operation. The information that you get Goodman Mfg GHS8 will certainly help you make a decision on the purchase.
If you already are a holder of Goodman Mfg GHS8, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Goodman Mfg GHS8.
However, one of the most important roles played by the user manual is to help in solving problems with Goodman Mfg GHS8. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Goodman Mfg GHS8 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
