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507581-04

Page 60  of  60

Issue 2128

Requirements for Commonwealth of Massachusetts

Modifications to NFPA-54, Chapter 10

Revise  NFPA-54  section  10.8.3  to  add  the  following 

requirements:

For all side wall, horizontally vented, gas-fueled equipment 

installed  in  every  dwelling,  building  or  structure  used  in 

whole or in part for residential purposes, including those 

owned or operated by the Commonwealth and where the 

side wall exhaust vent termination is less than seven (7) 

feet above the finished grade in the area of the venting, 

including but not limited to decks and porches, the following 

requirements shall be satisfied:

1. 

INSTALLATION OF CARBON MONOXIDE 

DETECTORS

. At  the  time  of  installation  of  the  side 

wall,  horizontally  vented,  gas-fueled  equipment,  the 

installing  plumber  or  gas  fitter  shall  observe  that  a 

hard-wired  carbon  monoxide  detector  with  an  alarm 

and battery backup is installed on the floor level where 

the gas equipment is to be installed. In addition, the 

installing  plumber  or  gas  fitter  shall  observe  that  a 

battery-operated  or  hard-wired  carbon  monoxide 

detector with an alarm is installed on each additional 

level of the dwelling, building or structure served by the 

side wall, horizontally vented, gas-fueled equipment. 

It shall be the responsibility of the property owner to 

secure the services of qualified licensed professionals 

for  the  installation  of  hard-wired  carbon  monoxide 

detectors.
a.  In the event that the side wall, horizontally vented, 

gas-fueled equipment is installed in a crawl space 

or  an  attic,  the  hard-wired  carbon  monoxide 

detector  with  alarm  and  battery  backup  may  be 

installed on the next adjacent floor level.

b.  In  the  event  that  the  requirements  of  this 

subdivision  cannot  be  met  at  the  time  of 

completion of installation, the owner shall have a 

period of thirty (30) days to comply with the above 

requirements; provided, however, that during said 

thirty (30) day period, a battery-operated carbon 

monoxide detector with an alarm shall be installed.

2. 

APPROVED CARBON MONOXIDE DETECTORS. 

Each  carbon  monoxide  detector  as  required  in 

accordance  with  the  above  provisions  shall  comply 

with NFPA 720 and be ANSI/UL 2034 listed and IAS 

certified.

3. 

SIGNAGE

. A metal or plastic identification plate shall 

be permanently mounted to the exterior of the building 

at  a  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  not  approve  the  installation  unless,  upon 

inspection,  the  inspector  observes  carbon  monoxide 

detectors and signage installed in accordance with the 

provisions of 248 CMR 5.08(2)(a) 1 through 4.

EXEMPTIONS: The following equipment is exempt 

from 24 CMR 5.08(2)(a) 1 through 4:

1.  The equipment listed in Chapter 10 entitled “Equipment 

Not Required to Be Vented” in the most current edition 

of NFPA 54 as adopted by the Board; and

2.  Product Approved side wall, horizontally vented, gas-

fueled  equipment  installed  in  a  room  or  structure 

separate from the dwelling, building or structure used 

in whole or in part for residential purposes.

MANUFACTURER REQUIREMENTS - GAS EQUIPMENT 

VENTING SYSTEM PROVIDED. 

When  the  manufacturer  of  Product  Approved  side  wall, 

horizontally  vented,  gas-fueled  equipment  provides  a 

venting  system  design  or  venting  system  components 

with  the  equipment,  the  instructions  provided  by  the 

manufacturer  for  installation  of  the  equipment  and  the 

venting system shall include:

1.  Detailed instructions for the installation of the venting 

system design or the venting system components: and 

2.  A complete parts list for the venting system design or 

venting system.

MANUFACTURER REQUIREMENTS - GAS EQUIPMENT 

VENTING SYSTEM NOT PROVIDED. 

When  the  manufacturer  of  Product  Approved  sidewall, 

horizontally  vented,  gas-fueled  equipment  does  not 

provide the parts for venting the flue gases, but identifies 

“special venting systems,” the following requirements shall 

be satisfied by the manufacturer:

1.  The referenced “special venting system” instructions 

shall  be  included  with  the  appliance  or  equipment 

installation instructions; and

2.  The  “special  venting  systems”  shall  be  Product 

Approved by the Board, and the instructions for that 

system shall include a parts list and detailed installation 

instructions.

A copy of all installation instructions for all Product 

Approved  side  wall,  horizontally  vented,  gas-fueled 

equipment, all venting instructions, all parts lists 

for  venting  instructions,  and/or  all  venting  design 

instructions shall remain with the appliance or 

equipment at the completion of the installation.

Summary of Contents for 030-08

Page 1: ...quivalent service agency 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 CAU...

Page 2: ...el COMBUSTION AIR INTAKE 2 51 Either Side 2 51 CONDENSATE TRAP CONNECTION Either Side 1 NOTE 20 C D 5 Ton size units installed in upflow applications that require air volumes of 1800 cfm 850 L s or gr...

Page 3: ...507581 04 Page 3 of 60 Issue 2128 Figure 1 Parts Arrangement...

Page 4: ...ag assembly containing the following 1 Snap bushing 1 Snap Plug 1 Wire tie 1 Condensate trap 1 Condensate trap cap 1 Condensate trap clamp 1 2 Diameter debris screen 1 3 4 Threaded street elbow Check...

Page 5: ...obtain a temperature rise within the range specified on the unit nameplate Failure to do so may cause erratic limit operation and premature heat exchanger failure This furnace must be installed so th...

Page 6: ...LURE TO FOLLOW THE ABOVE INSTALLATION INSTRUCTIONS FAILURE TO FOLLOW THE ABOVE INSTALLATION INSTRUCTIONS VOIDS THE MANUFACTURER S EQUIPMENT LIMITED WARRANTY ALLIED AIR DISCLAIMS ALL LIABILITY IN CONNE...

Page 7: ...ion from the National Fuel Gas Code ANSI Z223 1 NFPA 54 This reprinted material is not the complete and official position of ANSI on the referenced subject which is represented only by the standard in...

Page 8: ...e within 12 inches 305 mm of the top of the enclosure and one opening within 12 inches 305 mm of the bottom See Figure 5 Figure 5 Equipment in Confined Space All Air From Inside Air from Outside If ai...

Page 9: ...in Confined Space Inlet Air from Ventilated Crawlspace and Outlet Air to Outside NOTE The inlet and outlet air openings shall each have a free area of at least one square inch per 4 000 Btu 645mm2per...

Page 10: ...furnace is placed into operation After the bolt and washer have been removed the rigid leg will not touch the blower housing Figure 11 Units with 1 2 HP Blower Motor Upflow Applications The gas furna...

Page 11: ...in 610 mm Maintain a minimum of 24 in 610 mm for front service access Allow proper clearances to accommodate condensate trap installation For installations on a combustible floor do not install the f...

Page 12: ...nsions for units requiring 1800 cfm or more of air W x H 23 x 11 in 584 x 279 mm The opening can be cut as needed to accommodate plenum or IAQ cabinet while maintaining dimensions shown Side return ai...

Page 13: ...ust piping installation Cooling coils and supply and return air plenums must be supported separately NOTE When the furnace is installed on a platform or with the horizontal suspension kit in a crawl s...

Page 14: ...a furnace with bottom return air is installed on a platform make an airtight seal between the bottom of the furnace and the platform to ensure that the unit operates properly and safely Use fiberglas...

Page 15: ...th cement forcefully insert end of pipe into socket until it bottoms out Turn PVC pipe 1 4 turn during assembly but not after pipe is fully inserted to distribute cement evenly Do not turn ABS or cell...

Page 16: ...n the Vent Piping Guidelines section Model Vent Pipe Dia in STANDARD CONCENTRIC Outdoor Exhaust Accelerator Dia X Length Outdoor Exhaust Accelerator Dia X Length Flush Mount Kit 1 1 2 Concentric Kit 2...

Page 17: ...her gas burning appliances to their previous mode of operation 7 If a venting problem is found during any of the preceding tests the common venting system must be modified to correct the problem Resiz...

Page 18: ...ems which include multiple pipe sizes NOTE All horizontal runs of exhaust pipe must slope back toward unit A minimum of 1 4 6 mm drop for each 12 305 mm of horizontal run is mandatory for drainage NOT...

Page 19: ...9 36 21 70 70 48 13 93 92 73 73 10 31 16 65 65 43 8 89 87 68 68 Standard Termination at Elevation 4 501 10 000 ft Number of 90 Elbows Used 1 1 2 Pipe 2 Pipe 2 1 2 Pipe 3 Pipe Model Model Model Model...

Page 20: ...74 9 28 13 60 60 44 9 76 76 69 69 10 23 8 55 55 39 n a 71 71 64 64 Concentric Termination Elevation 4 501 10 000 ft Number of 90 Elbows Used 1 1 2 Pipe 2 Pipe 2 1 2 Pipe 3 Pipe Model Model Model Model...

Page 21: ...5 65 43 8 83 82 63 63 8 31 16 60 60 38 3 78 77 58 58 9 26 11 55 55 33 n a 73 72 53 53 10 21 6 50 50 28 68 67 48 48 Standard Termination Elevation 4 501 10 000 ft Number of 90 Elbows Used 1 1 2 Pipe 2...

Page 22: ...TRANSITION 1 1 2 2 6 MINIMUM Figure 26 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 EXH...

Page 23: ...nstalled 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...

Page 24: ...ng 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 o...

Page 25: ...2 30 30 2 1 2 in 10 N A 16 N A 26 N A 37 N A 36 N A 3 in 6 6 12 12 21 21 30 30 29 29 20 to 1 7 to 17 1 1 2 in N A N A 12 N A 20 N A N A N A N A N A 2 in 6 4 11 9 19 17 28 25 27 24 2 1 2 in N A N A 7 N...

Page 26: ...ated within 6 feet 1 8 m of a condensing unit because the condensate can damage the painted coating NOTE See Table 6 for maximum allowed exhaust pipe length without insulation in unconditioned space d...

Page 27: ...thin a height 15 feet 4 5m above the meter regulator assembly 3 feet 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...

Page 28: ...exhaust piping at the point where it exits the structure to improve the velocity of exhaust away from the intake piping See Table 7 Table 7 Exhaust Pipe Termination Size Reduction Model Exhaust Pipe S...

Page 29: ...nished FIELD PROVIDED REDUCER MAY BE REQUIRED TO ADAPT DIFFERENT VENT PIPE SIZE TO TERMINATION EXHAUST VENT 1 1 2 38mm accelerator provided on 71M80 44W92 kits for 045 and 070 models EXHAUST VENT Figu...

Page 30: ...within a height 15 feet 4 5m above the meter regulator assembly 3 feet 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 applianc...

Page 31: ...ce See the following figures Details of Exhaust Piping Terminations for Non Direct Vent Applications Exhaust pipes may be routed either horizontally through an outside wall or vertically through the r...

Page 32: ...haust from Furnace To Termination Kit 51W18 is shown Figure 49 Crawl Space Vent Pipe Drain Trap Assembled Incorrectly Figure 50 Upflow or Downflow Furnace with Exhaust through Crawl Space KIT 51W18 US...

Page 33: ...nce 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...

Page 34: ...in Figure 59 Route the condensate line to an open drain Condensate line must maintain a 1 4 downward slope from the furnace to the drain Do not use copper tubing or existing copper condensate lines fo...

Page 35: ...trap Piping from furnace must slope down a minimum of 1 4 per ft toward trap Figure 54 Unit with Evaporator Coil When combining the furnace and evaporator coil drains together the A C condensate drain...

Page 36: ...wn a minimum of 1 4 per ft toward trap Figure 55 Evaporator Coil Using a Common Drain Unit shown in horizontal right hand discharge position Piping from furnace must slope down a minimum of 1 4 per ft...

Page 37: ...nished Drain Assembly for 3 4 inch Drain Pipe Condensate Drain Connection In Unit Condensate Drain Connection In Unit Vent To Drain Condensate Drain Connection In Unit Optional Condensate Drain Connec...

Page 38: ...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 60 6 In some localities codes may require installation of a manual m...

Page 39: ...g Standard DRIP LEG MANUAL MAIN SHUT OFF VALVE Gas Valve Figure 62 Gas Piping Horizontal Configuration Horizontal Applications Possible Gas Piping Configurations NOTE BLACK IRON PIPE ONLY TO BE ROUTED...

Page 40: ...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 50...

Page 41: ...ace cabinet to facilitate wiring 3 Install a separate properly sized disconnect switch near the furnace so that power can be turned off for servicing Table 9 Model Maximum Over Current Protection Amps...

Page 42: ...of electrical shock Disconnect electrical power at the circuit breaker or service panel before making electrical connections Failure to disconnect power supplies can result in property damage persona...

Page 43: ...RMOSTAT LO HEAT 24VAC G MANUAL FAN FROM THERMOSTAT PAR C THERMOSTAT SIGNAL GROUND CONNECTED TO TRANSFORMER GRD TR CHASSIS GROUND GRD PAR COMMON 24VAC Y1 THERMOSTAT 1ST STAGE COOL SIGNAL 1 4 QUICK CONN...

Page 44: ...ated If the switch is toggled to the ON position it will provide a 12 minute delay before second stage heat is initiated This switch is only activated when the thermostat selector jumper is positioned...

Page 45: ...stage heat ON delay OFF 7 minutes ON 12 minutes ON CUT ON BOARD LINK W915 2 STAGE COMPR DEHUM S1 T STAT FURNACE TERM STRIP OUTDOOR UNIT 1 Heat 2 Cool with t stat with humidity control NOTE Use DIP swi...

Page 46: ...CUT ON BOARD LINK W914 DEHUM S1 T STAT FURNACE TERM STRIP OUTDOOR UNIT 2 Heat 1 Cool with t stat with humidity control OFF CUT ON BOARD LINK W914 DEHUM S1 T STAT FURNACE TERM STRIP OUTDOOR UNIT Not r...

Page 47: ...t w bilities Capable of 2 stage gas heat control OFF CUT ON BOARD LINK W951 HEAT PUMP CUT ON BOARD LINK W915 2 STAGE COMPR DEHUM FURNACE TERM STRIP HEAT PUMP L7724U T STAT dual fuel capa dual fuel cap...

Page 48: ...ties Capable of 2 stage gas heat midification OFF CUT ON BOARD LINK W914 DEHUM CUT ON BOARD LINK W951 HEAT PUMP CUT ON BOARD LINK W915 2 STAGE COMPR L7742U T STAT FURNACE TERM STRIP HEAT PUMP 67M41 H...

Page 49: ...507581 04 Page 49 of 60 Issue 2128 Figure 66...

Page 50: ...7 0 70 765 181 650 150 550 124 385 90 180 51 0 80 715 187 615 159 500 127 325 94 135 52 Blower Performance A96UH2E045B12 Performance Less Filter External Static Pressure in w g Air Volume Watts at Var...

Page 51: ...5 705 150 640 140 0 70 1145 380 1070 310 960 255 670 160 585 145 0 80 N A N A 1035 320 925 265 610 165 550 155 A96UH2E090C16 Performance Less Filter External Static Pressure in w g Air Volume Watts at...

Page 52: ...1765 335 1635 280 1435 200 2185 655 1915 440 1745 340 1620 275 1430 195 0 10 2170 660 1920 460 1715 350 1595 290 1380 205 2160 660 1880 460 1705 345 1570 285 1380 205 0 20 2130 680 1865 475 1670 370...

Page 53: ...not attempt to manually light burners on this furnace Each time the thermostat calls for heat the burners will automatically light The ignitor does not get hot when there is no call for heat on these...

Page 54: ...e unit 11 Set the thermostat to desired setting NOTE When unit is initially started steps 1 through 11 may need to be repeated to purge air from gas line 12 If the appliance will not operate follow th...

Page 55: ...5 3 1 1 7 3 5 4 5 13 0 LP Propane 4 5 10 0 4 2 9 4 4 0 9 1 3 9 8 9 4 5 10 0 11 0 13 0 NOTE A natural to L P propane gas changeover kit is necessary to convert this unit Refer to the changeover kit ins...

Page 56: ...ame Rollout Switches Two These manually reset switches are located on the front of the burner box Pressure Switch The pressure switch is located in the heating compartment on the cold end header box T...

Page 57: ...combustion air pressure tubing from cold end header collector box 15 Mark and remove wires from pressure switch Remove pressure switch Keep tubing attached to pressure switch 16 Remove electrical junc...

Page 58: ...ng screws Burners are self aligning to center of clam shells 40 Reconnect gas supply line to gas valve 41 Reconnect flame rollout switch wires 42 Reconnect sensor wire and reconnect 2 pin plug from ig...

Page 59: ...equivalent service agency or gas supplier Cabinet Parts Upper Access Panel Blower Access Panel Top Cap Control Panel Parts Transformer Integrated Control Board Door Interlock Switch Blower Parts Blowe...

Page 60: ...imum 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...

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