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507266-04B

Page 56 of 56

Issue 1904

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:

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.

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.

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.

”

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.

Содержание BG952UHV

Страница 1: ...nstallation adjustment alteration service or maintenance can cause property damage personal injury or loss of life Installation and service must be performed by a licensed professional installer or equivalent 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 CAUT...

Страница 2: ...de return air with optional RAB Return Air Base 3 Bottom return air 4 Return air from both sides 5 Bottom and one side return air 2 Optional External Side Return Air Filter kit is not for use with optional Return Air Base Consider sizing requirements for optional IAQ equipment before cutting side return opening FRONT VIEW SIDE VIEW Unit Dimensions Capacity A B C D in mm in mm in mm in mm 070 12 17...

Страница 3: ...507266 04B Page 3 of 56 Issue 1904 Figure 1 Parts Arrangement ...

Страница 4: ...e 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 equipment for shipping damage If you find any damage immediately contact the last carrier Please refer to specification sheets for available accessories Safety Information Improper installation adjustment alteration service o...

Страница 5: ...o 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 that its electrical components are protected from water Installed in Combination with a Cooling Coil When this furnace is used with cooling units Figure 4 it shall be installed in parallel with or on t...

Страница 6: ...ILURE TO FOLLOW THE ABOVE INSTALLATION INSTRUCTIONS FAILURE TO FOLLOW THE ABOVE INSTALLATION INSTRUCTIONS VOIDS THE MANUFACTURER S EQUIPMENT LIMITED WARRANTY BLUE SUMMIT DISCLAIMS ALL LIABILITY IN CONNECTION WITH INSTALLER S FAILURE TO FOLLOW THE ABOVE INSTALLATION INSTRUCTIONS General These instructions are intended as a general guide and do not supersede local codes in any way Consult authoritie...

Страница 7: ... position of ANSI on the referenced subject which is represented only by the standard in its entirely In Canada refer to the CSA B149 Installation codes Do not install the furnace in a corrosive or contaminated atmosphere Meet all combustion and ventilation air requirements as well as all local codes CAUTION All gas fired appliances require air for the combustion process If sufficient combustion a...

Страница 8: ...ng shall be within 12 305 mm of the top of the enclosure and one within 12 305 mm of the bottom These openings must communicate directly or by ducts with the outdoors or spaces crawl or attic that freely communicate with the outdoors or indirectly through vertical ducts Each opening shall have a minimum free area of 1 square inch per 4 000 Btu 645 mm per 59 kW per hour of the total input rating of...

Страница 9: ...etal louvers and grilles will have 60 to 75 percent free area Louvers and grilles must be fixed in the open position or interlocked with the equipment so that they are opened automatically during equipment operation Figure 10 Equipment in Confined Space Inlet Air from Ventilated Crawlspace and Outlet Air to Outside Roof Terminated Exhaust Pipe Furnace Ventilation Louvers Crawl Space Intake Debris ...

Страница 10: ...trap and drain connections and installation and service clearances 24 inches 610 mm at unit front The unit must be level from side to side Tilt the unit slightly maximum 1 2 in from level from back to front to aid in the draining of the heat exchanger See Figure 13 Allow for clearances to combustible materials as indicated on the unit nameplate Figure 12 Installation Clearances Top Plenum 1 in 25 ...

Страница 11: ... The furnace is equipped with a removable bottom panel to facilitate installation Markings are provided on both sides of the furnace cabinet for installations that require side return air Cut the furnace cabinet at the maximum dimensions shown on Page 2 Furnace applications which include side return air and a condensate trap installed on the same side of the cabinet trap can be installed remotely ...

Страница 12: ... installed in horizontal applications with either right or left hand air discharge Refer to Figure 18 for clearances in horizontal applications Figure 18 Horizontal Application Installation Clearances Right Hand Discharge Top 0 Front 0 Back 0 Ends 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 An 8 service cl...

Страница 13: ...ood sheet If unit is installed above finished space fabricate an auxiliary drain pan to be installed under unit Set unit in drain pan as shown in Figure 20 Leave 8 inches for service clearance below unit for condensate trap 3 Provide a service platform in front of unit When installing the unit in a crawl space a proper support platform may be created using cement blocks 4 Route auxiliary drain lin...

Страница 14: ...equivalent sealing method between the plenum and the furnace cabinet to ensure a tight seal If a filter is installed size the return air duct to fit the filter frame Pipe Fittings Specifications All pipe fittings primer and solvent cement must conform withAmerican National Standard Institute and theAmerican Society for Testing and Materials ANSI ASTM standards The solvent shall be free flowing and...

Страница 15: ...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...

Страница 16: ...lowing 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 venting system for proper size and horizontal pitch Determine that there is no blockage restriction leakage corrosion or other defic...

Страница 17: ... draw with the remaining appliance Exhaust Piping Route piping to outside of structure Continue with installation following instructions given in piping termination section Do Not discharge exhaust into an existing stack or stack that also serves another gas appliance If vertical discharge through an existing unused stack is required insert PVC pipe inside the stack until the end is even with the ...

Страница 18: ...rforated metal in exhaust or intake terminations Doing so will cause freeze ups and may block the terminations IMPORTANT Table 4 Minimum Vent Pipe Lengths Capacity Min Vent Length 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 Use the following steps to correctly size vent pipe diameter 070 090 110 btuh Standard or C...

Страница 19: ...n a 75 53 18 97 78 78 9 21 70 48 13 92 73 73 10 16 65 43 8 87 68 68 Standard Termination Elevation 4500 10 000 ft Number of 90 Elbows Used 2 Pipe 2 Pipe 2 Pipe Capacity Capacity Capacity 70 90 110 70 90 110 70 90 110 1 61 39 n a 110 88 53 132 113 113 2 56 34 105 83 48 127 108 108 3 51 29 100 78 43 122 103 103 4 46 24 95 73 38 117 98 98 5 41 19 90 68 33 112 93 93 6 36 14 85 63 28 107 88 88 7 31 9 8...

Страница 20: ...n a 65 49 14 81 74 74 9 13 60 44 9 76 69 69 10 8 55 39 n a 71 64 64 Concentric Termination Elevation 4 501 10 000 ft Number of 90 Elbows Used 2 Pipe 2 Pipe 2 Pipe Capacity Capacity Capacity 70 90 110 70 90 110 70 90 110 1 53 37 n a 100 84 49 116 109 109 2 48 32 95 79 44 111 104 104 3 43 27 90 74 39 106 99 99 4 38 22 85 69 34 101 94 94 5 33 17 80 64 29 96 89 89 6 28 12 75 59 24 91 84 84 7 23 7 70 5...

Страница 21: ...1 55 33 n a 72 53 53 10 6 50 28 67 48 48 Standard Termination Elevation 4 501 10 000 ft Number of 90 Elbows Used 2 Pipe 2 Pipe 2 Pipe Capacity Capacity Capacity 70 90 110 70 90 110 70 90 110 1 51 29 n a 95 73 38 112 93 93 2 46 24 90 68 33 107 88 88 3 41 19 85 63 28 102 83 83 4 36 14 80 58 23 97 78 78 5 31 9 75 53 18 92 73 73 6 26 4 70 48 13 87 68 68 7 21 n a 65 43 8 82 63 63 8 16 60 38 3 77 58 58 ...

Страница 22: ... the shortest length of 2 PVC pipe possible NOTE Exhaust pipe and intake pipe must be the same diameter Figure 26 Typical Exhaust Pipe Connections in Horizontal Direct or Non Direct Vent Applications Right Hand Discharge Shown When transitioning up in pipe size use the shortest length of 2 PVC pipe possible NOTE Exhaust pipe and intake pipe must be the same diameter ...

Страница 23: ...n 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 air is taken from outdoors and flue gases are discharged outdoors The p...

Страница 24: ...let 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 5C If 3 diameter pipe is used reduce to 2 diameter pipe at the termination point to accommodate the debris screen 3 Use a sheet metal screw to secure ...

Страница 25: ... and 12 above the average snow accumulation At vent termination 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 6 for maximum allowed...

Страница 26: ...erature table provided in the current edition of the ASHRAE Fundamentals Handbook 2 Poly Propylene vent pipe PP by Duravent and Centrotherm NOTE Concentric terminations are the equivalent of 5 and should be considered when measuring pipe length NOTE Maximum uninsulated vent lengths listed may include the termination vent pipe exterior to the structure and cannot exceed 5 linear feet or the maximum...

Страница 27: ...er 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 horizontally 6 feet 1 8m 7 feet...

Страница 28: ...r 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 NFPA 54 Natural Fuel G...

Страница 29: ...6 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 reducer may be required on the exhaust piping at the point where it exits the structure to improve the velocity of exhaust away from the intake piping See Table 7 Figur...

Страница 30: ...nt Concentric Wall Termination 71M80 69M29 OR 60L46 US 41W92 or 41W93 Canada Figure 42 Optional Vent Termination for Multiple Unit Installation of Direct Vent Wall Termination Figure 43 Direct Vent Application Using Existing Chimney 3 8 76MM 203MM STRAIGHT CUT OR ANGLE CUT IN DIRECTION OF ROOF SLOPE SHOULDER OF FITTINGS PROVIDE SUPPORT OF PIPE ON TOP PLATE ALTERNATE INTAKE PIPE INTAKE PIPE INSULAT...

Страница 31: ...e 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 20 508 mm Max 6 1...

Страница 32: ...tion Kit 15F75 or 44J41 UNCONDITIONED ATTIC SPACE 3 76MM OR 2 51MM PVC PROVIDE SUPPORT FOR EXHAUST LINES 12 305MM ABOVE AVE SNOW ACCUMULATION SIZE PER EXHAUST PIPE TERMINATION SIZE REDUCTION TABLE Figure 46 Non Direct Vent Field Supplied Wall Termination SIZE TERMINATION PER EXHAUST PIPE TERMINATION SIZE REDUCTION TABLE SIZE TERMINATION PER EXHAUST PIPE TERMINATION SIZE REDUCTION TABLE Use wall su...

Страница 33: ...Termination Drain Trap assembled Figure 49 Kit 51W18 USA 15Z70 Canada Parts Identification and Assembly Exhaust from Furnace To Termination Exhaust from Furnace To Termination Kit 51W18 is shown Figure 50 Crawl Space Vent Pipe Drain Trap Assembled Incorrectly Figure 51 Upflow or Downflow Furnace with Exhaust through Crawl Space KIT 51W18 USA Basement Floor To Termination 1 2 PVC to Code Approved D...

Страница 34: ...Do not use copper tubing or existing copper condensate lines for drain line CAUTION 5 Figure 54 and Figure 55 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 56 and Figure 57 Upflow furnace Figure 53 In upflow furnace applications the field provided vent must be a minimum 1 to a maximum ...

Страница 35: ...tion using a separate drain Piping from furnace must slope down a minimum of 1 4 per ft toward trap Figure 55 Unit with Evaporator Coil Using a Separate Drain Figure 56 Evaporator Coil Using a Common Drain Figure 57 Evaporator Coil Using a Common Drain Piping from furnace must slope down a minimum of 1 4 per ft toward trap ...

Страница 36: ...507266 04B Page 36 of 56 Issue 1904 Figure 58 Trap Drain Assembly Using 1 2 PVC or 3 4 PVC ...

Страница 37: ...un in or through air ducts clothes chutes chimneys or gas vents dumb waiters or elevator shafts Center gas line through piping hole Gas line should not touch side of unit See Figure 60 and Figure 61 4 Piping should be sloped 1 4 per 15 feet 6 mm per 5 6 m upward toward the gas meter from the furnace The piping must be supported at proper intervals every 8 to 10 feet 2 44 to 3 05 m using suitable h...

Страница 38: ...AND INSTALLED GROUND JOINT UNION DRIP LEG MANUAL MAIN SHUT OFF VALVE Horizontal Application Right Side Air Discharge Gas Valve GROUND JOINT UNION DRIP LEG MANUAL MAIN SHUT OFF VALVE GROUND JOINT UNION DRIP LEG MANUAL MAIN SHUT OFF VALVE Horizontal Application Left Side Air Discharge Gas Valve Figure 62 When testing pressure of gas lines gas valve must be disconnected and isolated See Figure 62 Gas...

Страница 39: ...0 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 2400...

Страница 40: ...onnect switch near the furnace so that power can be turned off for servicing Table 9 Capacity Maximum Over Current Protection Amps 070B12 090C12 15 090C20 110C20 20 4 Before connecting the thermostat check 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 5 Complete the wiring co...

Страница 41: ...ne and any replacement of wire shall conform with the temperature limitation for Type T wire 63 F 35 C rise Connect a sufficiently sized wire with ground to the furnace s line voltage connections and ground wire Refer to the furnace rating plate for electrical characteristics to be used in sizing field supply wiring and overcurrent protection The line voltage supply should be routed through a read...

Страница 42: ...is a call for dehumidification Both the passive and active dehumidification methods described above can be utilized on the same furnace Circulating Airflow Adjustments Cooling Mode The units are factory set for the highest airflow for each model Adjustments can be made to the cooling airflow by repositioning the jumper plug marked COOL A B C D see Figure 66 To determine what CFM the motor is deliv...

Страница 43: ... blower remains energized until the limits are closed Fan On When the thermostat is set for continuous fan operation and there is no demand for heating or cooling a call for fan closes the R to G circuit and the circulating blower motor runs at 50 of the selected cooling CFM until switched off When the call for fan is turned off the control de energizes the circulating blower Cooling The unit is s...

Страница 44: ...e W1 W2 Heat Call Figure 68 Indoor Blower Operation High Heat W2 Call Figure 69 Indoor Blower Operation Call for Fan Percentage of High Stage Cooling Figure 70 Indoor Blower Operation Single Stage Cooling Figure 71 Indoor Blower Operation Two Stage Cooling Percentage of High Stage Cooling ...

Страница 45: ...own by a red LED on the control board The control continuously monitors its own operation and the operation of the system If a failure occurs the LED will indicate the failure code The flash codes are presented in Table 10 Fault Code History Button The control stores the last five fault codes in memory A push button switch is located on the control When the push button switch is pressed and releas...

Страница 46: ...AUSE INJURY OR DEATH UNIT MUST BE GROUNDED IN ACCORDANCE WITH NATIONAL AND LOCAL CODES NOTE IF ANY WIRE IN THIS APPLIANCE IS REPLACED IT MUST BE REPLACED WITH WIRE OF LIKE SIZE RATING INSULATION THICKNESS AND TERMINATION FIELD SUPPLIED ACC WIRE S145 IS USED WITH HONEYWELL GAS VALVE WHEN APPLIED IN LP GAS UNITS ...

Страница 47: ...NG MATERIAL HAVING A TEMP RATING OF AT LEAST 90 c 3 PROPER POLARITY MUST BE OBSERVED FOR FIELD LINE VOLTAGE SUPPLY IGNITION CONTROL WILL LOCK OUT IF POLARITY IS REVERSED 4 FOR TEMPORARY SERVICE REPLACEMENT OF CIRCULATING BLOWER MOTOR WITH PSC MOTOR CONNECT DESIRED SPEED TAP TO EAC TERMINAL AND NEUTRAL TAP TO NEUTRAL TERMINAL ON IGNITION CONTROL 5 DO NOT CONNECT C COMMON CONNECTION BETWEEN INDOOR U...

Страница 48: ...e 860 1060 1215 1365 Normal 810 960 1130 1265 705 840 1005 1140 1st Stage 600 740 840 970 Normal 555 665 770 855 500 600 680 790 BG952UH090CV12 Temp Rise Speed Adjustment Heating CFM 0 0 8 w c Setting D Setting C Setting B Setting A High Fire 60 90 1060 1135 1240 1430 Normal 960 1040 1120 1310 830 935 980 1175 Low Fire 35 65 960 1040 1120 1310 Normal 875 945 995 1195 790 840 920 1080 Cooling Stage...

Страница 49: ...ormal 1225 1465 1645 1885 1065 1320 1505 1675 1st Stage 935 1055 1275 1465 Normal 835 980 1120 1335 740 870 1010 1150 BG952UH110CV20 Temp Rise Speed Adjustment Heating CFM 0 0 8 w c Setting D Setting C Setting B Setting A High Fire 45 75 1560 1760 1905 2080 Normal 1415 1610 1740 1930 1285 1485 1560 1745 Low Fire 35 65 1155 1325 1420 1565 Normal 1055 1200 1310 1480 935 1075 1170 1315 Cooling Stage ...

Страница 50: ...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 units Gas Valve Operation 1 STOP Read the safety information at the beginning of this section Figure 74 2 Set the thermostat to the lowest setting 3 Turn OFF all electrical power to the unit 4 This furnace is equipped with a...

Страница 51: ...rts at step 1 Gas Pressure Adjustment Gas Flow Approximate Capacity Seconds for One Revolution Natural LP 1 cu ft Dial 2 cu ft Dial 1 cu ft Dial 2 cu ft Dial 70 55 110 136 272 90 41 82 102 204 110 33 66 82 164 Natural 1000 btu cu ft LP 2500 btu cu ft Table 13 Gas Meter Clocking Chart Furnace should operate at least 5 minutes before checking gas flow Determine time in seconds for two revolutions of...

Страница 52: ...es 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 This switch checks for proper combustion air inducer operation before allowing ignition trial The switch is factory set and must not be adjusted Temperature Rise After the furnace has been started and supply and return ...

Страница 53: ...ff power to the furnace 2 Have a shallow pan ready to empty condensate water 3 Remove the clean out cap from the condensate trap and empty water Inspect the trap then reinstall the clean out cap Cleaning Heat Exchanger If cleaning the heat exchanger becomes necessary follow the below procedures and refer to Figure 1 when disassembling unit Use papers or protective covering in front of furnace whil...

Страница 54: ...ion box 37 Reinstall the combustion air inducer and flexible no hub connector Reconnect the 2 pin plug to the wire harness 38 Reconnect drain tubes between flue collar and cold end header box 39 Secure burner assembly to vestibule panel using four existing 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 ...

Страница 55: ...ions 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 This c...

Страница 56: ...m 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 app...

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