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Haier GE APPLIANCES NF96US, Руководство по установке

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Haier GE APPLIANCES NF96US Скачать руководство пользователя страница 15

507768-05G / 31-5000655

Page 15 of 56

Issue 2223

Capacity

Vent Pipe Dia. 

(in.)

Standard

Concentric

Flush Mount Kit

Field 

Fabricated

1-1/2 inch

2 inch

3 inch

51W11 (US) 51W12 

(CA)

71M80 (US) 

4

44W92 (CA)

69M29 (US) 

4

44W92 (CA)

60L46 (US) 

4

444W93 (CA)

045

1

 1-1/2

3

YES

5

 YES

2

 YES

N/A

N/A

2

3

YES

5

 YES

2

 YES

2-1/2

3

YES

5

 YES

2

 YES

3

3

YES

5

 YES

2

 YES

070

1

 1-1/2

3YES

5

 YES

2

 YES

2

3YES

5

 YES

2

 YES

2-1/2

3

YES

5

  YES

2

 YES

3

3

YES

5

 YES

2

 YES

090

2

3

YES

5

 YES

N/A

YES

YES

2-1/2

3

YES

5

 YES

YES

YES

3

3

YES

5

 YES

YES

YES

110

2

YES

5

 YES

YES

YES

2-1/2

YES

5

 YES

YES

YES

3

YES

5

 YES

YES

YES

NOTE - Standard Terminations do not include any vent pipe or elbows external to the structure. Any vent pipe or elbows external to the structure must be included in total 

vent length calculations. See vent length tables.* Kits must be properly installed according to kit instructions.

1Requires field-provided outdoor 1-1/2” exhaust accelerator.
2Concentric kits 71M80 and 44W92 include 1-1/2” outdoor accelerator, when used with 045 and 070 input models. When using 1-1/2 in. piping, the pipe must transition to 

2in. pipe when used with the concentrci kit.

3 Flush mount kits 51W11 and 51W12 includes 1-1/2 in. outdoor exhaust accelerator, required when used with 045, 070 and 090 input models. When using 1-1/2 in. piping, 

the pipe must transition to 2in. pipe when used with the flush mount kit.

4 Termination kits 44W92 and 44W93 approved for use in Canadian installations to meet CSAB149.
5 See table 10 for vent accelerator requirements

6  2inch to 1-1/2 inch reducer required. must be fied required.

Table 3. Outdoor Termination Kits

Joint Cementing Procedure

All cementing of joints should be done according to the 

specifications outlined in ASTM D 2855.

NOTE: 

A  sheet  metal  screw  may  be  used  to  secure  the 

intake pipe to the connector, if desired. Use a drill or self 

tapping screw to make a pilot hole.

DANGER OF EXPLOSION!

Fumes from PVC glue may ignite during system check. 

Allow fumes to dissipate for at least 5 minutes before 

placing unit into operation.

 DANGER

1.  Measure and cut vent pipe to desired length.
2.  Debur and chamfer end of pipe, removing any ridges 

or rough edges. If end is not chamfered, edge of pipe 

may remove cement from fitting socket and result in a 

leaking joint.

3.  Clean and dry surfaces to be joined.
4. 

Test fit joint and mark depth of fitting on outside of pipe.

5.  Uniformly apply a liberal coat of PVC primer for PVC 

or use a clean dry cloth for ABS to clean inside socket 

surface of fitting and male end of pipe to depth of fitting 

socket.

NOTE: 

Time  is  critical  at  this  stage.  Do  not  allow 

primer to dry before applying cement.

Содержание GE APPLIANCES NF96US

Страница 1: ...ncy or the gas supplier WARNING As with any mechanical equipment personal injury can result from contact with sharp sheet metal edges Be careful when you handle this equipment CAUTION Table of Contents Unit Dimensions 2 Parts Arrangement 3 Gas Furnace 4 Shipping and Packing List 4 Safety Information 4 General 6 Combustion Dilution Ventilation Air 6 Installation 9 Filters 13 Duct System 13 Venting ...

Страница 2: ...either side 23 3 4 603 25 635 3 3 8 86 D 1 NOTE 5C 5 Ton size units installed in upflow applications that require air volumes of 1800 cfm 850 L s or greater must have one of the following 1 Single side return air with transition to accommodate 20 x 25 x 1 in 508 x 635 x 25 mm cleanable air filter Required to maintain proper air velocity 2 Single side return air with optional RAB Return Air Base 3 ...

Страница 3: ...507768 05G 31 5000655 Page 3 of 56 Issue 2223 Figure 1 Parts Arrangement ...

Страница 4: ...amp 1 2 diameter debris screen 1 3 4 Threaded street elbow NOTE The required bellows grommet is field provided See the Gas Piping section for relevant diagrams Check equipment for shipping damage If you find any damage immediately contact the last carrier Please refer to specification sheets for available accessories Safety Information DANGER OF EXPLOSION There are circumstances in which odorant u...

Страница 5: ...event operation of either the heating or the cooling unit unless it is in the full HEAT or COOL setting When installed this furnace must be electrically grounded according to local codes In addition in the United States installation must conform with the current National Electric Code ANSI NFPA No 70 The National Electric Code ANSI NFPA No 70 is available from the following address National Fire P...

Страница 6: ... and unsafe operation When the furnace is installed in non direct vent applications do not block the furnace combustion air opening with clothing boxes doors etc Air is needed for proper combustion and safe unit operation When the furnace is installed in an attic or other insulated space keep insulation away from the furnace When the furnace is installed in an unconditioned space consider provisio...

Страница 7: ...r for combustion and ventilation depend largely on whether the furnace is installed in an unconfined or a confined space Unconfined Space An unconfined space is an area such as a basement or large equipment room with a volume greater than 50 cubic feet 1 42 m per 1 000 Btu 29 kW per hour of the combined input rating of all appliances installed in that space This space also includes adjacent rooms ...

Страница 8: ...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 be no less than 3 inches 75 mm In calculating free area the blocking effect of louvers grilles or screens must be considered If the design and free area of protective covering is not known for calculating the size opening required it may be...

Страница 9: ...m Ventilated Crawl Space and Outlet Air to Outside Shipping Bolt Removal Units with 1 2 hp 3 4 hp blower motor are equipped with three flexible legs and one rigid leg The rigid leg is equipped with a shipping bolt and a flat white plastic washer rather than the rubber mounting grommet used with a flexible mounting leg See Figure 11 The bolt and washer must be removed before the furnace is placed i...

Страница 10: ...duct system The base must provide a stable support and an airtight seal to the furnace Allow absolutely no sagging cracks gaps etc For no reason should return and supply air duct systems ever be connected to or from other heating devices such as a fireplace or stove etc Fire explosion carbon monoxide poisoning personal injury and or property damage could result WARNING Figure 13 Installation Clear...

Страница 11: ...eturn air Opening SIDE VIEW 3 1 4 83 1 23 584 Overall Maximum 584 23 3 4 19 1 22 7 16 570 Overall Maximum SIDE RETURN AIR OPENINGS Either Side 5 5 8 143 1 Minimum 11 279 2 Maximum 14 356 683 26 7 8 7 1 4 184 FURNACE FRONT AIR FLOW IF BASE IS USED WITHOUT IAQ CABINET A SINGLE RETURN AIR PLENUM MUST COVER BOTH UNIT AND RETURN AIR BASE OPENINGS INDOOR AIR QUALITY CABINET PCO Filter Cabinet etc AIR BA...

Страница 12: ... Flow Air Flow Right Hand Discharge Left End Right End Air Flow Air Flow Bottom Floor Left Hand Discharge Top Plenum 1 in 25 mm Front 0 Back 0 Sides 0 Vent 0 Floor 0 Front clearance in alcove installation must be 24 in 610 mm Maintain a minimum of 24 in 610 mm for front service access Allow proper clearances to accommodate condensate trap For installations on a combustible floor do not install the...

Страница 13: ...re 16 Filters This unit is not equipped with a filter or rack Afield provided filter is required for the unit to operate properly Table 1 lists recommended filter sizes A filter must be in place whenever the unit is operating Furnace Cabinet Width Filter Size Side Return Bottom Return B 17 1 2 16 x 25 x 1 1 16 x 25 x 1 1 C 21 20 x 25 x 1 1 Table 1 Duct System Use industry approved standards to siz...

Страница 14: ...ABS to either PVC or CPVC Low temperature solvent cement is recommended during cooler weather Metal or plastic strapping may be used for vent pipe hangers Uniformly apply a liberal coat of PVC primer for PVC or use a clean dry cloth for ABS to clean inside socket surface of fitting and male end of pipe to depth of fitting socket Canadian Applications Only Pipe fittings primer and solvent cement us...

Страница 15: ...quired when used with 045 070 and 090 input models When using 1 1 2 in piping the pipe must transition to 2in pipe when used with the flush mount kit 4 Termination kits 44W92 and 44W93 approved for use in Canadian installations to meet CSAB149 5 See table 10 for vent accelerator requirements 6 2inch to 1 1 2 inch reducer required must be fied required Table 3 Outdoor Termination Kits Joint Cementi...

Страница 16: ...appliance connected to the venting system being placed into operation could result in carbon monoxide poisoning or death The following steps shall be followed for each appliance connected to the venting system being placed into operation while all other appliances connected to the venting system are not in operation WARNING 1 Seal any unused openings in the common venting system 2 Inspect the vent...

Страница 17: ...completely sealed to prevent leakage of combustion products into the living space CAUTION Vent Piping Guidelines This gas furnace can be installed as either a Non Direct Vent or a Direct Vent gas central furnace NOTE In non Direct Vent installations combustion air is taken from indoors and flue gases are discharged outdoors In Direct Vent installations combustion air is taken from outdoors and flu...

Страница 18: ...s Capacity Min Vent Length 045 070 090 110 15 ft or 5 ft plus 2 elbows or 10 ft plus 1 elbow Any approved termination may be added to the minimum length listed 045 070 090 110 Standard or Concentric See Table 3 Intake or Exhaust 1 1 2 2 2 1 2 or 3 Furnace capacity 1 Which termination 2 Which needs most elbows 3 How many 4 Desired pipe size 5 What is the altitude 6 Use Table 5 or Table 6 to find ma...

Страница 19: ...ate the vent pipe outside the structure must be included in the total vent length calculation NOTE Contact your local FTC if more than 85ft of venting is needed Table 5A Maximum Allowable Intake or Exhaust Vent Length in Feet Standard Termination at Elevation 2 001 10 000 ft Number of 90 Elbows Used 2 Pipe 2 1 2 Pipe 3 Pipe Capacity Capacity Capacity 045 070 090 110 045 070 090 110 045 070 090 110...

Страница 20: ...erminate the vent pipe outside the structure must be included in the total vent length calculation NOTE Contact your local FTC if more than 85ft of venting is needed Table 5C Maximum Allowable Intake or Exhaust Vent Length in Feet Concentric Termination at Elevation 2 001 10 000 ft Number of 90 Elbows Used 2 Pipe 2 1 2 Pipe 3 Pipe Capacity Capacity Capacity 045 070 090 110 045 070 090 110 045 070 ...

Страница 21: ...e the vent pipe outside the structure must be included in the total vent length calculation NOTE Contact your local FTC if more than 85ft of venting is needed Table 6A Maximum Allowable Exhaust Vent Lengths With Furnace Installed in a Closet or Basement Using Ventilated Attic or Crawl Space For Intake Air in Feet Standard Termination at Elevation 2 001 10 000 ft Number of 90 Elbows Used 2 Pipe 2 1...

Страница 22: ...ANSITION 1 1 2 2 6 MINIMUM Figure 25 TYPICAL EXHAUST PIPE CONNECTIONS IN HORIZONTAL DIRECT OR NON DIRECT VENT APPLICATIONS RIGHT HAND DISCHARGE SHOWN SIDE VIEW 45 MAX 45 MAX 2 2 2 2 or 2 12 max EXHAUST TRANSITION 3 2 2 EXHAUST TRANSITION 1 1 2 2 2 EXHAUST or NOTE 1 1 2 Vent Pipe Diameter Allowed Only on 045 070 Units DO NOT transition from larger to smaller pipe in horizontal runs of exhaust pipe ...

Страница 23: ...be installed in either direct vent or non direct vent applications In non direct vent applications when intake air will be drawn into the furnace from the surrounding space the indoor air quality must be considered and guidelines listed in Combustion Dilution and Ventilation Air section must be followed Follow the next two steps when installing the unit in Direct Vent applications where combustion...

Страница 24: ... flooring or a platform Ensure that the intake air inlet will not be obstructed by loose insulation or other items that may clog the debris screen 2 If intake air is drawn from a ventilated attic Figure 31 or ventilated crawlspace Figure 32 the exhaust vent length must not exceed those listed in Table 5D If 3 diameter pipe is used reduce to 2 diameter pipe at the termination point to accommodate t...

Страница 25: ...tion care must be taken to maintain protective coatings over building materials prolonged exposure to exhaust condensate can destroy protective coatings It is recommended that the exhaust outlet not be located within 6 feet 1 8 m of a condensing unit because the condensate can damage the painted coating NOTE See Table 6A through Table 6B for maximum allowed exhaust pipe length without insulation i...

Страница 26: ...Refer to 99 Minimum Design Temperature table provided in the current edition of the ASHRAE Fundamentals Handbook 2 Poly Propylene vent pipe PP by Duravent and Centrotherm 3 Vent length in table is equivalent length Each elbow is equivalent to 5ft of straight pipe and should be included when measuring total length NOTE Maximum uninsulated vent lengths listed may include the termination vent pipe ex...

Страница 27: ... property Clearance under veranda porch deck or balcony 12 Equal to or greater than soffit depth 3 feet 9m 12 3 feet 9m within a height 15 feet 4 5m above the meter regulator assembly 3 feet 9m 6 inches 152mm for appliances 10 000 Btuh 3kw 12 inches 305mm for appliances 10 000 Btuh 3kw and 100 000 Btuh 30kw 36 inches 9m for appliances 100 000 Btuh 30kw 3 feet 9m above if within 10 feet 3m horizont...

Страница 28: ...et 9m 6 inches 152mm for appliances 10 000 pliances 10 000 Btuh 3kw and 50 000 pliances 50 000 Btuh 15kw 6 inches 152mm for appliances 10 000 Btuh 3kw 12 inches 305mm for appliances 10 000 Btuh 3kw and 100 000 Btuh 30kw 36 inches 9m for appliances 100 000 Btuh 30kw 3 feet 9m above if within 10 feet 3m horizontally 6 feet 1 8m 7 feet 2 1m 12 inches 305mm 1 In accordance with the current ANSI Z223 1...

Страница 29: ... the structure Figure 38 2 Intake and exhaust pipes should be placed as close together as possible at termination end refer to illustrations Minimum separation is 3 76 mm on roof terminations and 6 152 mm on sidewall terminations 3 On roof terminations the intake piping should terminate straight down using two 90 elbows see Figure 36 4 Exhaust piping must terminate straight out or up as shown A re...

Страница 30: ... Clearance above grade or average snow accumulation B Horizontal separation between intake and exhaust C Minimum from end of exhaust to inlet of intake D Exhaust pipe length E Wall support distance from top of each pipe intake exhaust 12 305 mm Min 12 305 mm Min 6 152 mm Min 24 610 mm Max 9 227 mm Min 12 305 mm Min 16 405 mm Max 6 152 mm Max 6 152 mm Min 24 610 mm Max 9 227 mm Min 12 305 mm Min 20...

Страница 31: ...W93 Canada Minimum Above Average Snow Accumulation SHEET METAL STRAP Clamp and sheet metal strap must be field installed to support the weight of the termination kit FLASHING Not Furnished CLAMP INTAKE 12 305mm FIELD PROVIDED REDUCER MAY BE REQUIRED TO ADAPT DIFFERENT VENT PIPE SIZE TO TERMINATION Figure 43 DIRECT VENT CONCENTRIC WALL TERMINATION 71M80 69M29 or 60L46 US 44W92 or 44W93 Canada 12 30...

Страница 32: ...on SIZE TERMINATION PER EXHAUST PIPE TERMINATION SIZE REDUCTION TABLE FIELD PROVIDED REDUCER MAY BE REQUIRED TO ADAPT DIFFERENT VENT PIPE SIZE TO TERMINATION 3 If exhaust piping must be run up a sidewall to position above snow accumulation or other obstructions piping must be supported every 24 610 mm as shown in Figure 47 When exhaust piping must be run up an outside wall any reduction in exhaust...

Страница 33: ...e to an open drain Condensate line must maintain a 1 4 downward slope from the furnace to the drain 5 Figure 52 and Figure 53 show the furnace and evaporator coil using a separate drain If necessary the condensate line from the furnace and evaporator coil can drain together See Figure 54 and Figure 55 Upflow furnace Figure 50 In upflow furnace applications the field provided vent must be a minimum...

Страница 34: ...ap Piping from furnace must slope down a minimum of 1 4 per ft toward trap Figure 51 Condensate Trap with Optional Overflow Switch When combining the furnace and evaporator coil drains together the A C condensate drain outlet must be vented to relieve pressure in order for the furnace pressure switch to operate properly WARNING ...

Страница 35: ...furnace must slope down a minimum of 1 4 per ft toward trap Figure 53 Unit with Cooling Coil Using Separate Drain Figure 54 Evaporator Coil Using a Common Drain Figure 55 Evaporator Coil Using a Common Drain Piping from furnace and evaporator coil must slope down a minimum 1 4 per ft toward trap ...

Страница 36: ...507768 05G 31 5000655 Page 36 of 56 Issue 2223 Figure 56 Trap Drain Assembly Using 1 2 PVC or 3 4 PVC ...

Страница 37: ...leg in vertical pipe runs to serve as a trap for sediment or condensate 5 A 1 8 N P T plugged tap or pressure post is located on the gas valve to facilitate test gauge connection See Figure 57 6 In some localities codes may require installation of a manual main shut off valve and union furnished by installer external to the unit Union must be of the ground joint type Compounds used on threaded joi...

Страница 38: ...507768 05G 31 5000655 Page 38 of 56 Issue 2223 Figure 58 Gas Piping Upflow Applications Figure 59 Gas Piping Horizontal Applications ...

Страница 39: ...69 580 16 42 530 15 01 490 13 87 460 13 03 430 12 18 400 11 33 1 1 2 38 1 1 610 40 894 2100 59 46 460 41 34 1180 33 41 990 28 03 900 25 48 810 22 94 750 21 24 690 19 54 650 18 41 620 17 56 2 50 8 2 067 52 502 3950 111 85 2750 77 87 2200 62 30 1900 53 80 1680 47 57 1520 43 04 1400 39 64 1300 36 81 1220 34 55 1150 32 56 2 1 2 63 5 2 469 67 713 6300 178 39 4350 123 17 3520 99 67 3000 84 95 2650 75 04...

Страница 40: ...heck to make sure the wires will be long enough for servicing at a later date Make sure that thermostat wire is long enough to facilitate future removal of blower for service Complete the wiring connections to the equipment Use the provided unit wiring diagram and the field wiring diagram shown in Figure 63 Use 18 gauge wire or larger that is suitable for Class II rating for thermostat connections...

Страница 41: ... speed when there is no cooling or heating demand See Table 20 for allowable continuous circulation speeds 2 When the furnace is running in the heating mode the indoor blower will run on the heating speed 3 When there is a cooling demand the indoor blower will run on the cooling speed Generator Use Voltage Requirements The furnace requires 120 volts 10 Range 108 volts to 132 volts The furnace oper...

Страница 42: ...507768 05G 31 5000655 Page 42 of 56 Issue 2223 045 3B 070 3B 090 4C 110 5C Figure 64 Typical Wiring Diagram ...

Страница 43: ...or 103217 03 Control Red LED Flash Code2 Diagnostic Codes Status of Furnace Off No power to control or control hardware fault detected On Board Fault Detected Fast Heartbeat3 Call for Heat Burner Operation Slow Heartbeat1 Normal Operation Idle Continuous Fan or Cool 1 Flash2 Reverse Line Voltage Polarity or Phasing of 120V power 2 Flashes2 Improper earth ground 3 Flashes2 Burner failed to light or...

Страница 44: ... Continuous Fan Speed From Indoor Blower Motor 24VAC PARK 3 Terminals For Unused Motor Speed Taps FS Flame Sensor Electrode 120VAC 24V COM Common 24VAC Table 12 Terminal Designations Applicable to 103217 03 and 107163 01 Controls Unit Start Up FOR YOUR SAFETY READ BEFORE OPERATING Do not use this furnace if any part has been underwater A flood damaged furnace is extremely dangerous Attempts to use...

Страница 45: ... wait for the combustion air inducer to stop At this point the trap should be primed with sufficient water to ensure proper condensate drain operation If you do not follow these instructions exactly a fire or explosion may result causing property damage personal injury or death WARNING Gas Valve Operation See Figure 67 1 STOP Read the safety information at the beginning of this section 2 Set the t...

Страница 46: ...ations each unit should be checked separately with and without other units operating Supply pressure must fall within range listed in Table 15 Manifold Pressure Measurement 1 Remove the threaded plug from the outlet side of the gas valve and install a field provided barbed fitting Connect to a manometer to measure manifold pressure 2 Start unit and allow 5 minutes for unit to reach steady state 3 ...

Страница 47: ... kit installation instruction for the conversion procedure Capacity 0 7 500 ft 0 2 286m 7 501 10 000 ft 2 286 3 048 m Natural to LP Propane High Altitude Natural Burner Orifice Kit High Altitude LP Propane Burner Orifice Kit 045 11K50 51W01 11K45 070 090 110 Pressure switch is factory set No adjustment necessary All models use the factory installed pressure switch from 0 4500 feet 0 1370 m Table 1...

Страница 48: ...located and other spaces of the building 4 Close fireplace dampers 5 Turn on clothes dryers and any appliances not connected to the venting system Turn on any exhaust fans such as range hoods and bathroom exhausts so they will operate at maximum speed Do not operate a summer exhaust fan 6 Follow the lighting instruction to place the appliance being inspected into operation Adjust thermostat so app...

Страница 49: ...ff Time 120 Second off Time 180 Second off Time Constant Torque Motor These units are equipped with a constant torque ECM motor It has a DC motor coupled to an electronic control module both contained in the same motor housing The motor is programmed to provide constant torque at each of the five selectable speeds The motor has five speed taps Each tap requires 24 volts to energize Thermostat Heat...

Страница 50: ...85 925 75 0 10 1445 335 1275 230 1170 180 905 94 860 80 0 20 1415 345 1240 240 1125 190 870 101 800 85 0 30 1380 355 1205 250 1090 200 830 109 760 95 0 40 1345 370 1175 265 1055 210 790 117 710 105 0 50 1315 385 1150 280 1020 220 735 129 665 115 0 60 1275 390 1110 290 985 230 685 137 625 125 0 70 1210 395 1075 300 950 240 640 146 565 130 0 80 N A N A 1030 305 915 250 595 148 535 135 NF96U090S4C Pe...

Страница 51: ...910 460 1750 345 1660 285 1430 195 0 10 2185 680 1925 460 1750 345 1625 285 1440 200 2155 705 1885 480 1720 360 1610 295 1415 205 0 20 2150 705 1880 480 1710 365 1590 300 1390 220 2130 725 1855 495 1685 380 1565 305 1380 220 0 30 2110 720 1850 495 1680 380 1560 320 1350 230 2085 745 1825 510 1655 390 1535 325 1335 230 0 40 2080 735 1810 520 1650 405 1515 330 1310 245 2060 760 1795 530 1625 405 149...

Страница 52: ...E After any heavy snow ice or frozen fog event the furnace vent pipes may become restricted Always check the vent system and remove any snow or ice that may be obstructing the plastic intake or exhaust pipes Electrical 1 Check all wiring for loose connections 2 Check for the correct voltage at the furnace with furnace operating Correct voltage is 120 VAC 10 3 Check amp draw on the blower motor wit...

Страница 53: ... exchanger assembly to cabinet Remove two screws from blower rails which secure bottom heat exchanger flange Remove heat exchanger from furnace cabinet 23 Back wash heat exchanger with soapy water solution or steam If steam is used it must be below 275 F 135 C 24 Thoroughly rinse and drain the heat exchanger Soap solutions can be corrosive Take care to rinse entire assembly 25 Reinstall heat excha...

Страница 54: ...from the assembly 9 Gently clean the face of the burners using the soft brush attachment on a vacuum cleaner Visually inspect the inside of the burners and crossovers for any blockage caused by foreign matter Remove any blockage 10 Reinstall the burner manifold assembly using the existing four screws Burners are self aligning to center of clam shells 11 Reconnect ground wire 12 Reconnect flame sen...

Страница 55: ...cifications Problems detected during the inspection may make it necessary to temporarily shut down the furnace until the items can be repaired or replaced Instruct the homeowners to pay attention to their furnace Situations can arise between annual furnace inspections that may result in unsafe operation For instance items innocently stored next to the furnace may obstruct the combustion air supply...

Страница 56: ...minimum height of eight 8 feet above grade directly in line with the exhaust vent terminal for the horizontally vented gas fueled heating appliance or equipment The sign shall read in print size no less than one half 1 2 inch in size GAS VENT DIRECTLY BELOW KEEP CLEAR OF ALL OBSTRUCTIONS 4 INSPECTION The state or local gas inspector of the side wall horizontally vented gas fueled equipment shall n...

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