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Summary of Contents for 8MPT Series

Page 1: ...result in severe personal injury or death WARNING signifies hazards which could result in personal injury or death CAUTION is used to identify unsafe practices which may result in minor personal inju...

Page 2: ...pstream of Furnace Drip LegLU Gas Valve turned ON Lj Type of Gas Natural Lj LP Lj Temperature of Supply Air Low Heat High Heat Low Heat Temperature of Return Air Temperature Rise Supply Return High He...

Page 3: ...Shut off Upstream of Furnace Drip Leg Gas Valve turned ON Lj Type of Gas Natural Lj LP Lj Temperature of Supply Air Low Heat High Heat Low Heat Temperature of Return Air Temperature Rise Supply Return...

Page 4: ...ature rise range with a duct system which has an external static pressure within the allowable range as specified in Technical Support Manual of these in structions See furnace rating plate C When a f...

Page 5: ...ntial garage installations require Burners and ignition sources installed at least 18 457 mm above the floor Furnace must be located or physically protected from pos sible damage by a vehicle If the f...

Page 6: ...4 610 ram 1 25 mm 0 Horizontal osition Linecontactis permissibleonly betweenlines formedby intersectionsof top and two sidesof furnacejacket and buildingjoists studs orframing 9 o _ 37i 851 33 i 3 _o...

Page 7: ...d the front of the furnace louver door This is a recommen dation only not a requirement This furnace MUST NOT be installed directly on carpeting tile or other combustible material other than wood floo...

Page 8: ...hose trim the hose to remove ex cess length see Figure 5 If additional wire length is needed cut the wire tie Pressure Switch Tube Routing PRESS SW ASSY DUAL SCREW HEX HD 2 i v 2 STAGE VARIABLE SPEED...

Page 9: ...Air for Combustion and Ventilation of the Nation al Fuel Gas Code National Fuel Gas Code NFGC NFPA 54 ANSI Z223 1 2006 in the U S 2 Sections 8 2 8 3 8 5 8 6 8 7 and 8 8 of National Standard of Canada...

Page 10: ...tlet JL I Io sl II I Air l _u c I LI _t _ _et 3 I I I _ 1 _ _ Air 2 Inlet Air 1 o s Outlet _ Air 2 Air 2 3 c Horizontal duct openings reguire 1 square inch of free area per 2 000 BTUH 11 cmZ kW of com...

Page 11: ...r 1 000 BTUH 4 8 cubic meters per kW of the maximum input ratings for all gas appliances installed in the space The standard method permits indoor air to be used for combustion and ventilation air The...

Page 12: ...ith other fan assisted or draft hood equipped appliances in accordance with the NFGC or NSCNGPIC CategoryI SafeVentingRequirements Category furnace vent installations shall be in accordance with Parts...

Page 13: ...proved by the authority having juris diction In Canada Only power venters approved by the power ventor manufacturer and where allowed by the authority having jurisdic tion may be used Please consult t...

Page 14: ...e from a plumbing vent stack p Clearance above paved sidewalk or paved 7 feet 2 13m driveway located on public property 1 In accordance with the current CSA B149 1 Natural Gas and Predane Installation...

Page 15: ...sted for use with these furnaces The Chimney Adapter Kit are listed alternative venting design for these furnaces See the kit instructions for complete details Exterior Chimney has one or more sides e...

Page 16: ...s used to line a chimney no other appliance shall be vented into the annular space between the chimney and the metal liner Appliance Application Requirements Appliance operation has a significant impa...

Page 17: ...adianInstallationCode CSA B149 1 inCanada condition I Missing mortar Rebuild or brick crown 1 with day tile No liner iner ortop sea sea ngood or reline chimneyas condition necessary Reline Yes _epair...

Page 18: ...ply connection to furnace Gas supply pressure should be within minimum and maxi mum values listed on rating plate Pressures are usually set by gas suppliers 1 2 Install gas piping in accordance with l...

Page 19: ...ed in step 3 Turn open end of inlet elbow to face the right side of the furnace 1 4 turn see Figure 14 3 Turn assembly an additional 1 2 turn to position inlet near the top of the gas valve In line wi...

Page 20: ...a qualified service agency in accordance with the Manufacturer s instructions and all applicable codes and requirements or in the absence of local codes Tthe applicable national codes These furnaces m...

Page 21: ...mn in Table 4 and Table 5 The burner orifice part nos are as follows HighAltitudeAir PressureSwitch Orifice 41 1096942 Orifice 42 1011351 Orifice 43 1011377 Orifice 44 1011352 The factory installed pr...

Page 22: ...less than 1 2 PSlG 3 5 Pa to the gas valve Apply a commercial soap solution to all joints to test for leaks Correct any leaks indicated by bubbles Correct even the smallest leak at once Check for leak...

Page 23: ...Y2 and G to energize cooling blower speed NOTE MPT models are not two stage cooling compatible 8MPV If single stage cooling is used the Y and G from the thermostat must be connected to the control boa...

Page 24: ...n service or maintenance may cause fuse to blow If fuse replacement is required use only a fuse of identical size 5 amp TapSelectInterface Board 8MPV The Tap Select Interface Board is used with the Va...

Page 25: ...It is often advisable to route the return air ducts under the floor or through the attic Refer to furnace Technical Support Manual Blower Data for air flow information When the furnace is used with a...

Page 26: ...ty filter and rack On these models the supplied filter may be installed internally for bottom return or the supplied filter and rack may be mounted externally for bottom return The furnaces with great...

Page 27: ...ed with a means to prevent operation of either unit unless the damper is in full heat or full cool position Copper or plastic tubing may be used for the condensate drain line Filter Clip Construction...

Page 28: ...001SB NAHH002SB NAHH003SB Subbase for Coil Box NAHH004SB NAHH005SB NAHH006SB 1511 16 398 5 195 16 490 5 221b 16 582 6 153 4 25 4 193 8 181 1 23 284 2 Sub base for Combustible Floor Dimensions J_ 283 4...

Page 29: ...urnace base Return air connection through the side s or back of the furnace is NOT al lowed Duct Design Design and install the air distribution system to comply with Air Conditioning Contractors of Am...

Page 30: ...ld pressure tap on the outlet of gas control valve See Figure 33 Use a manometer with a 0 to 12 in wc 0 to 2989 Pa range 2 Turn gas ON Operate the furnace on High Heat by using a jumper wire on the R...

Page 31: ...Allow the furnace to run approximately 10 minutes Then inspect the main burner flames See Figure 34 Check for the following Figure 34 Stable and blue flames Dust may cause orange tips or wisps of yell...

Page 32: ...s intended for the tow speed motor 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 terminal it wilt provide low speed blower o...

Page 33: ..._ I I_1 l _ _oi_v n nnnn nn n_ _ _c z _ _ O ___ ___ ON 1 r Ir OFF 0 CONTINUOUS CFM SELECT I II _E_T _s_ IIC L CF_ IICOO _O_ OFF SELECT SELECT DELAY PROFILES HP MODE SELECTION HEAT PUMP EFFICIENCY OR I...

Page 34: ...after the low pressure switch closes the ignitor begins a 17 second warm up The gas valve is energized the main burners light at Low Heat rate and flame is sensed The ignitor is de energized and the...

Page 35: ...power or blower door before initiating status code recall or code wilt be lost Code is automatically cleared after 72 hours or upon power reset 24VAC or 115VAC is off fuse is open Normal operation or...

Page 36: ...SEC I I EAC HUM 1 0A MAX COMB NED I 8 FURNACE CONTROL SWl HEAT OFF DELAY SWl 1 SWl 2 _ 8 88 88 coz_ NEAT 0FF DELAY HEAT 0FF DELAY HEAT 0FF DELAY H EAT 0FF DELAY THERMOSTAT TYPE THERMOSTAT TYPE THERMO...

Page 37: ...ss of the O terminal being energized or de energized If the J2 jumper is in the HP COMFORT position then there will be a 10 reduction in airflow when the O terminal is de energized HP heating and no a...

Page 38: ...ues flashing error code 6 The ignitor stays off for 17 seconds then begins to warm up again The ignitor glows red hot for 22 seconds then turns off The FCB proceeds to soft lockout Stops flashing erro...

Page 39: ...17 WiringDiagram 8MPV VariableSpeedBlowerMotor 39 Specifications are subject to change without notice 441 01 202301...

Page 40: ...for heat and pressure switch closed if no HUM thermostat option is available DEHUM provides a 20 reduction in airflow when Y1 orY1 Y2 is energized when the furnace control DE HUM terminal is energize...

Page 41: ...CONDITIONER Fq Fq i i OPTIONAL HUMIDIFIER 1 i i _ i t _ 1 NOTE2 Single Stage Thermostat with Two Stage or Variable Speed Furnace MPT MPV Models and Single Stage Air Conditioner TSIB NOTE 5 NO CONNECT...

Page 42: ...CONTROL _ DEHUM OPTIONAL HUMIDIFIER Fq i i i i i i i i i 1 NOTE 2 Two Stage Thermostat with Variable Speed Furnace MPV Models only and Two Stage Air Conditioner TWO STAGE THERMOSTAT TSIB note s OPTION...

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