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RETURN AIR CONNECTIONS

FIRE HAZARD
Failure to follow this warning could result in fire, personal
injury, or death.
Never connect return-air ducts to the back of the furnace.
Return-air duct connections on furnace side(s) permitted in
upflow applications only.

Upflow Furnaces

The return-air duct must be connected to bottom, sides (left or
right), or a combination of bottom and side(s) of main furnace
casing. Bypass humidifier may be attached into unused side return
air portion of the furnace casing. DO NOT connect any portion of
return-air duct to back of furnace casing.

Downflow and Horizontal Furnaces

The return-air duct must be connected to return-air opening
provided. DO NOT cut into casing sides or back to attach any

Fig. 25—Duct Flanges

A93029

NO

YES

YES

PERFORATED
DISCHARGE DUCT
FLANGE

210°

MIN

Fig. 26—Crawlspace Horizontal Application for Direct Vent/2-Pipe Installation (Sizes 040 Through 140) and for

Non-Direct Vent/1-Pipe Installation (Sizes 040 Through 120 Only)

A93304

NOTES:

ANGLE
IRON OR
EQUIVALENT

(B)

(A) ROD LOCATION

USING DIMPLE
LOCATORS
(SEE DIMENSIONAL
DWG FOR
LOCATIONS)

13

/

16

-IN. MAX

ALTERNATE SUPPORT
LOCATION FROM BACK

ALTERNATE SUPPORT
LOCATION 4-IN. MIN
8-IN. MAX

3

⁄

8-IN. ROD

(A)

(B)

(A)

(B)

(B)

(A)

1. A 1 In. clearance minimum between top of
furnace and combustible material.

2. The entire length of furnace must be
supported when furnace is used in horizontal
position to ensure proper drainage.

3. For non-direct vent/1-pipe application,
bottom side combustion-air entry cannot be
used when furnace is installed with hangers
as shown.

(A) PREFERRED ROD LOCATION

(B) ALTERNATE ROD LOCATION

DRAIN

5

3

⁄

4

″

3

/

8

-IN. HEX NUT

& WASHER (4)

REQD PER ROD

VENT

COMBUSTION-AIR PIPE
(DIRECT VENT/2-PIPE
APPLICATION,ALL SIZES)

COMBUSTION-AIR INTAKE
(NON-DIRECT VENT/1-PIPE
APPLICATION)

3-IN. MINIMUM CLEARANCE TO
COMBUSTION-AIR INTAKE IS REQUIRED
(NON-DIRECT VENT/1-PIPE
APPLICATION,)

22

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Содержание 58MVB Series

Страница 1: ...Electrical Connections 25 115 v Wiring 25 24 v Wiring 27 Accessories 27 Removal of Existing Furnaces from Common Vent Systems 27 Combustion air and Vent Pipe Systems 27 Condensate Drain 40 General 40 Application 41 Condensate Drain Protection 42 START UP ADJUSTMENTS AND SAFETY CHECK 42 General 42 Select Setup Switch Positions 43 Prime Condensate Trap With Water 44 Purge Gas Lines 44 Sequence of Op...

Страница 2: ... AGA and CGA design certified for natural and propane gases see furnace rating plate and for installation in alcoves attics basements closets utility rooms crawlspaces and garages The furnace is factory shipped for use with natural gas A CSA listed gas conversion kit is required to convert furnace for use with propane gas See Fig 3 for required clearances to combustibles Maintain a 1 in clearance ...

Страница 3: ... 16 CONDENSATE DRAIN TRAP LOCATION DOWNFLOW HORIZONTAL RIGHT OR ALTERNATE 1 2 IN DIA GAS CONN 2 IN COMBUSTION AIR CONN 1 2 IN DIA GAS CONN 7 8 IN DIA POWER CONN 1 2 IN DIA THERMOSTAT ENTRY 2 IN VENT CONN DIMPLE LOCATORS FOR HORIZONTAL HANGING 14 1 2 TYP SIDE INLET NOTES 1 Minimum return air openings at furnace based on metal duct If flex duct is used see flex duct manufacturer s recommendations fo...

Страница 4: ...e carter de serpentin pièce nº KCAKC Le contact n est permis qúentre les lignes formées par les intersections du dessus et des deuxcôtés de la chemise de la fournaise et des solives des montants ou de la charpente du bátiment La distance indiquée concerne l extrémité du tuyau d arrivée d air et l extrémité du tuyau de sortie d air Pour les fournaises de 120 et 140 taille 1 po 25mm dégagement des m...

Страница 5: ...Sites Communities and Set Ups ANSI NCS A225 1 and or CAN CSA Z240 MH Series Mobile Homes CANADA NSCNGPIC For a copy contact Standard Sales CSA International 178 Rexdale Boulevard Etobicoke Tor onto Ontario M9W 1R3 Canada Step 3 Combustion and Ventilation Air US Section 8 3 of the NFGC Air for Combustion and Ventilation CANADA Part 7 of the NSCNGPIC Venting Systems and Air Supply for Appliances Ste...

Страница 6: ...priate application instructions for these procedures MINOR PROPERTY DAMAGE Failure to follow this caution may result in minor property damage Local codes may require a drain pan under entire furnace and condensate trap when a condensing furnace is used in an attic application or over a finished ceiling NOTE In Canada installations shall be in accordance with current NSCNGPIC and or local codes Ste...

Страница 7: ...ain furnace door to confirm location of these tubes 1 Collector Box Drain Tube Connect collector box drain tube blue label to condensate trap NOTE On 17 1 2 in wide furnaces ONLY cut tube between corrugated sections to prevent kinks 2 Inducer Housing Drain Tube a Remove and discard LOWER molded inducer housing drain tube which was previously connected to condensate trap b Use inducer housing drain...

Страница 8: ...where furnace blower is located above combustion and controls section of furnace and conditioned air is discharged downwards CONDENSATE TRAP LOCATION The condensate trap must be removed from the factory installed blower shelf location and relocated in selected application location as shown in Fig 2 9 or 10 To relocate condensate trap from the blower shelf to desired location perform the following ...

Страница 9: ...r diameter drain tube factory supplied in loose parts bag to drain tube cou pling extending collector box drain tube for connection to condensate trap c Route extended collector box drain tube between gas valve and inlet housing as shown in Fig 10 d Determine appropriate length and cut e Connect to condensate trap f Clamp tube to prevent any condensate leakage 2 Inducer Housing Drain Tube a Remove...

Страница 10: ...ied in loose parts bag 3 Connect collector box pressure tube green label to pressure switch connection labeled COLLECTOR BOX 4 Extend collector box pressure tube pink label which was previously connected to pressure switch by splicing to remain ing small diameter tube factory supplied in loose parts bag 5 Route this extended tube pink label to condensate trap relief port connection 6 Determine app...

Страница 11: ...ctory supplied in loose parts bag into collector box drain tube blue label which was previously connected to condensate trap b Connect large diameter drain tube and clamp factory supplied in loose parts bag to drain tube coupling extend ing collector box drain tube c Route extended tube blue label to condensate trap and cut to appropriate length d Clamp tube to prevent any condensate leakage 2 Ind...

Страница 12: ... this caution may result in intermittent unit operation The condensate trap MUST be installed below furnace See Fig 6 for dimensions The drain connection to condensate trap must also be properly sloped to an open drain NOTE A 12 in minimum offset pipe section is recommended with short 5 to 8 ft vent systems This recommendation is to reduce excessive condensate droplets from exiting the vent pipe S...

Страница 13: ...onnections 1 Collector Box Drain Tube a Remove factory installed plug from LOWER collector box drain tube blue and white striped label b Install removed clamp and plug into UPPER collector box drain tube blue label which was previously connected to condensate trap c Connect LOWER collector box drain tube blue and white striped label to condensate trap Tube does not need to be cut d Clamp tube to p...

Страница 14: ... section is recommended with short 5 to 8 ft vent systems This recommendation is to reduce excessive condensate droplets from exiting the vent pipe See Fig 12 13 or 42 LOCATION Step 1 General This furnace must be installed so the electrical components are protected from water not be installed directly on any combustible material other than wood flooring refer to SAFETY CONSIDERATIONS be located so...

Страница 15: ...to occupancy The furnace ductwork and filters are cleaned as necessary to remove drywall dust and construction debris from all HVAC system components after construction is completed After construction is complete verify furnace operating conditions including ignition input rate temperature rise and venting according to the manufacturer s instructions The furnace and its return air system shall be ...

Страница 16: ...e Location and Application DIRECT VENT 2 PIPE APPLICATION Furnace may be located in a confined space without special provisions for dilution or ventilation air Table 1 Minimum Free Area Required for Each Combustion Air Opening or Duct to Outdoors FURNACE INPUT BTUH TWO HORIZONTAL DUCTS 1 SQ IN 2 000 BTUH 1 100 SQ MM KW SINGLE DUCT OR OPENING 1 SQ IN 3 000 BTUH 734 SQ MM KW TWO OPENINGS OR VERTICAL...

Страница 17: ...ovided to avoid negative pressure in the equipment room or space A positive seal must be made between the furnace cabinet and the return air duct to prevent pulling air from the burner area and from draft safeguard opening CARBON MONOXIDE POISONING HAZARD Failure to follow this warning could result in peronal injury or death The operation of exhaust fans kitchen ventilation fans clothes dryers att...

Страница 18: ... per hour ACH shall not exceed 0 60 The following requirements apply to the Standard Method and to the Known Air Infiltration Rate Method 1 Adjoining rooms can be considered part of a space if a There are no closable doors between rooms b Combining spaces on same floor level Each opening shall have free area of at least 1 in 2 1 000 Btuh 2 000 mm2 kW of the total input rating of all gas appliances...

Страница 19: ...drill a 5 16 in diameter hole in each bottom corner of furnace See Fig 21 Holes in bottom closure panel may be used as guide locations 2 For each hole install nut on bolt and then install bolt and nut in hole Install flat washer if desired 3 Install another nut on other side of furnace base Install flat washer if desired Fig 19 Air for Combustion Ventilation and Dilution for Outdoors A03174 1 SQ I...

Страница 20: ...ized to handle the required system design CFM at the design static pressure When a furnace is installed so that the supply ducts carry air circulated by the furnace to areas outside the space containing the furnace the return air must also be handled by a duct s sealed to the furnace casing and terminating outside the space containing the furnace Secure ductwork with proper fasteners for type of d...

Страница 21: ...plications on Combustible Flooring NOT Using KGASB Subbase Furnace with CD5 or CK5 Coil Assembly or KCAKC Coil Box 19 19 20 20 24 1 2 Upflow Applications 23 24 1 8 23 5 8 24 3 4 Downflow Applications on Non Combustible Flooring 22 7 8 19 23 1 2 19 5 8 Downflow Applications on Combustible Flooring Using KGASB Subbase Furnace with or without CD5 or CK5 Coil Assembly or KCAKC Coil Box 22 1 8 19 23 3 ...

Страница 22: ...al Application for Direct Vent 2 Pipe Installation Sizes 040 Through 140 and for Non Direct Vent 1 Pipe Installation Sizes 040 Through 120 Only A93304 NOTES ANGLE IRON OR EQUIVALENT B A ROD LOCATION USING DIMPLE LOCATORS SEE DIMENSIONAL DWG FOR LOCATIONS 13 16 IN MAX ALTERNATE SUPPORT LOCATION FROM BACK ALTERNATE SUPPORT LOCATION 4 IN MIN 8 IN MAX 3 8 IN ROD A B A B B A 1 A 1 In clearance minimum ...

Страница 23: ...is caution may result in intermittent unit operation or performance satisfaction For airflow requirements above 1800 CFM see Air Delivery table in Product Data literature for specific use of single side inlets The use of both side inlets a combination of 1 side and the bottom or the bottom only will ensure adequate return air openings for airflow requirements above 1800 CFM NOTE Side return air op...

Страница 24: ... connect a capped nipple into lower end of tee Capped nipple should extend below level of gas controls Place a ground joint union between gas control manifold and manual gas shutoff valve See Fig 30 An accessible manual shutoff valve MUST be installed external to furnace casing and within 6 ft of furnace A 1 8 in NPT plugged tapping accessible for test gauge connection MUST be installed immediatel...

Страница 25: ...mmets COMBUSTION AIR PIPE GROMMET GAS LINE GROMMET GAS LINE COMBUSTION AIR PIPE VENT PIPE VENT PIPE GROMMET UNUSED 1 3 4 IN DIAMETER GAS CONN HOLE GAS LINE ENTRY HOLE FILLER PLUG NOTE PIPE GROMMETS AND ENTRY HOLE FILLER PLUGS ARE INCLUDED IN FACTORY SUPPLIED LOOSE PARTS BAG Fig 32 Heating and Cooling Application Wiring Diagram A98325 115 V FIELD SUPPLIED DISCONNECT SWITCH 115 V SINGLE PHASE AUXILI...

Страница 26: ...gs factory supplied in loose parts bag in unused power entry holes See Fig 34 J Box Relocation 1 Remove 2 screws holding auxiliary J box See Fig 35 2 Rotate J box 180 and attach box to left side using holes provided 3 Install power entry hole filler plugs factory supplied loose parts bag in unused power entry holes See Fig 34 FIRE OR ELECTRICAL SHOCK HAZARD Failure to follow this warning could res...

Страница 27: ...1 4 in male quick connect HUM terminal and COM 24V screw terminal on the control board thermostat strip The HUM terminal is energized when blower is energized in heating See Fig 37 UNIT DAMAGE HAZARD Failure to follow this caution may result in unit component damage DO NOT connect furnace control HUM terminal to HUM humidifier terminal on Thermidistat Zone Controller or similar device See Thermidi...

Страница 28: ...American National Standards Institute ANSI stan dards and American Society for Testing and Materials ASTM standards See Table 7 for approved materials for use in the U S A FIRE AND EXPLOSION HAZARD Failure to follow this warning could result in fire property damage personal injury or death Solvent cements are combustible Keep away from heat sparks and open flame Use only in well ventilated areas A...

Страница 29: ...I IDM Connector PL3 4 Circuit ECM BLWM Connector PL4 4 Circuit Model Plug Connector PL7 4 Circuit Communication Connector PL9 2 Circuit OAT Connector PL10 2 Circuit HSI Connector PL11 IDM Connector 12 Circuit PL12 1 Circuit Inductor Splice Connector PL13 16 Circuit ECM Blower Ctrl Connector PL14 5 Circuit ECM Blower Power Connector SW1 1 Manual Switch Status Code Recall SPST N O SW1 2 Manual Switc...

Страница 30: ...DUCER MOTOR CONNECTOR 24 V THERMOSTAT TERMINALS FUTURE APPLICATIONS Table 7 Approved Combustion Air and Vent Pipe Fitting and Cement Materials ASTM SPECIFICATION MARKED ON MATERIAL MATERIAL PIPE FITTINGS SOLVENT CEMENT AND PRIMERS DESCRIPTION D1527 ABS Pipe Schedule 40 D1785 PVC Pipe Schedule 40 D2235 For ABS Solvent Cement For ABS D2241 PVC Pipe SDR 21 SDR 26 D2466 PVC Fittings Schedule 40 D2468 ...

Страница 31: ...em ONLY 1 Permanently install perforated disk assembly factory supplied in loose parts bag in combustion air elbow using RTV or by cementing as shown in Fig 39 For 120 000 Btuh size units only separate the 2 halves of perforated disk assembly and use only the shouldered disk half 2 Determine the length of straight portion of combustion air inlet pipe from Fig 39 3 Cut field supplied 2 in diameter ...

Страница 32: ...Table 8 Direct Vent Termination Clearance A05009 32 ...

Страница 33: ... Table 9 Other than Direct Vent Termination Clearance A05013 33 ...

Страница 34: ...ent 2 Pipe System ONLY Moisture in com bustion air intake may be a result of improper termination Ensure combustion air pipe termination is similar to those as shown in Fig 43 so that it will not be susceptible to area where light snow or others sources of moisture could be pulled in VENT PIPE General Furnace vent connection must be attached as shown in Fig 38 CARBON MONOXIDE POISONING AND PROPERT...

Страница 35: ...tric 2 2 40 35 30 25 20 15 2 1 2 2 1 2 70 70 70 70 70 70 120 000 2 Pipe or 3 In Concentric 3 3 31 26 12 NA NA NA 3 3 63 62 62 61 61 61 ALTITUDE UNIT SIZE BTUH DIRECT VENT 2 PIPE ONLY NON DIRECT VENT 1 PIPE ONLY NUMBER OF 90 ELBOWS Termination Type Pipe Dia IN Pipe Dia IN 1 2 3 4 5 6 3001 to 4000 40 000 2 Pipe or 2 In Concentric 1 1 2 1 1 2 42 37 32 27 22 17 2 70 70 70 70 70 70 60 000 2 Pipe or 2 I...

Страница 36: ...1 to 7000 40 000 2 Pipe or 2 In Concentric 1 1 2 1 1 2 35 30 25 20 15 10 2 2 70 70 68 67 66 64 60 000 2 Pipe or 2 In Concentric 1 1 2 1 1 2 35 30 25 20 15 10 2 2 70 70 68 67 66 64 80 000 2 Pipe or 2 In Concentric 1 1 2 1 1 2 20 15 10 5 NA NA 2 2 70 70 68 67 62 57 100 000 2 Pipe or 2 In Concentric 2 2 31 26 21 16 11 6 2 1 2 2 1 2 70 70 68 67 66 64 120 000 2 Pipe or 3 In Concentric 3 3 49 48 47 45 4...

Страница 37: ...000 2 Pipe or 2 In Concentric 1 1 2 1 1 2 15 10 5 NA NA NA 2 2 57 55 53 51 46 41 100 000 2 Pipe or 2 In Concentric 2 2 24 19 14 9 NA NA 2 1 2 2 1 2 57 55 53 51 49 47 120 000 2 Pipe or 3 In Concentric 3 3 39 37 35 33 31 29 Disk usage Unless otherwise stated use perforated disk assembly factory supplied in loose parts bag Wide radius elbow Vent sizing for Canadian installations over 4500 ft 1370m ab...

Страница 38: ...n per linear ft with no sags between hangers UNIT DAMAGE HAZARD Failure to follow this caution may result in unit component damage Vent pipe must be installed and fully seated against inducer housing internal stop Clamp must be tightened to prevent any condensate leakage 6 Install casing hole filler cap factory supplied in loose parts bag in unused vent pipe casing hole Installation Guidelines for...

Страница 39: ... Only in this instruction When determining appropriate location for termination consider the following guidelines 1 Comply with all clearance requirements stated in Table 8 or Table 9 per application 2 Termination or termination kit should be positioned where vent vapors will not damage plants shrubs or air conditioning equipment 3 Termination or termination kit should be positioned so that it wil...

Страница 40: ...3 to avoid recirculation of flue gases Step 11 Condensate Drain GENERAL Condensate trap is shipped installed in the blower shelf and factory connected for UPFLOW applications Condensate trap must be RELOCATED for use in DOWNFLOW and HORIZONTAL applications Condensate trap MUST be used for all applications An external trap is not required when connecting the field drain to this condensate trap The ...

Страница 41: ... A At least 36 in Concentric Vent and Combustion Air Side Termination A At least 36 in Side wall termination of less than 12 in above highest snow level 12 in min from overhang or roof 12 in separation between bottom of combustion air and bottom of vent typ Maintain 12 in min clearance above highest anticipated snow level or grade whichever is greater typ A At least 36 in A Maintain 12 in min clea...

Страница 42: ...ecure heat tape in place Wire ties can be positioned in notches of condensate trap sides See Fig 46 4 Wrap field drain pipe with remaining heat tape approximately 1 wrap per ft 5 When using field supplied heat tape follow heat tape manu facturer s instructions for all other installation guidelines START UP ADJUSTMENTS AND SAFETY CHECK Step 1 General 1 Furnace must have a 115 v power supply properl...

Страница 43: ...minal is only energized when blower is energized in heating CONTINUOUS FAN CF SETUP SWITCHES The CF setup switches are used to select desired airflow when thermostat is in continuous fan mode or to select low cooling airflow for two speed cooling units This setup feature allows continuous fan airflow or low cooling airflow to be adjusted To set desired continuous fan airflow or low cooling airflow...

Страница 44: ...grounded for proper operation or control will lock out Control is grounded through green yellow wire routed to gas valve and burner box screw Using schematic diagram follow sequence of operation through different modes See Fig 36 Read and follow wiring diagram carefully NOTE If a power interruption occurs during a call for heat W W1 or W W1 and W2 the control will start a 90 second blower only ON ...

Страница 45: ...rnace control CPU and a 25 sec prepurge period begins The RPM is used to evaluate vent system resistance This evaluation is then used to determine the required RPM necessary to operate the inducer motor during the low heat prepurge period and low heat mode NOTE The heat cycle can start in either high or low heat If a high heat cycle is initiated the furnace control CPU will de energize the high he...

Страница 46: ...o select the low heat only operation mode in response to closing the thermostat R to W1 circuit Closing the thermostat R to W1 and W2 circuits always causes high heat operation re gardless of the setting of the low heat only switch The wall thermostat calls for heat closing the R to W1 circuit for low heat or closing the R to W1 and W2 circuits for high heat The furnace control performs a self che...

Страница 47: ...inal EAC 1 will remain energized for an additional 90 seconds Jumper Y1 to DHUM to reduce the cooling off delay to 5 seconds See Fig 37 THERMIDISTAT MODE See Fig 51 54 for Thermidistat connections The dehumidification output DHUM on the Thermidistat should be connected to the furnace control thermostat terminal DHUM When there is a dehumidify demand the DHUM input is activated which means 24 vac s...

Страница 48: ...ignals disappear at the same time the blower motor BLWM will remain on at low heat airflow for the selected blower OFF delay period At the end of the blower OFF delay the blower motor BLWM will shut OFF unless G is still energized in which case the blower motor BLWM will operate at continuous blower airflow COMPONENT TEST The furnace features a component test system to help diagnose a system probl...

Страница 49: ...th Single Speed Air Conditioner Fig 52 Two Stage Furnace with Two Speed Air Con ditioner A00276 A00277 Fig 53 Two Stage Furnace with Single Speed Heat Pump Dual Fuel A00278 Fig 54 Two Stage Furnace with Two Speed Heat Pump Dual Fuel 49 ...

Страница 50: ... Pump A00281 Fig 57 Two Stage Thermostat With Two Stage Fur nace and Two Speed Air Conditioner See note 2 A00280 Fig 56 Dual Fuel Thermostat With Two Stage Furnace and Two Speed Heat Pump A02348 Fig 58 Single Stage Thermostat With Two Stage Furnace and Two Speed Air Conditioner 50 ...

Страница 51: ...pplications 10 NO connection should be made to the furnace HUM terminal when using a Thermidistat 11 Optional connection If wire is connected dip switch SW1 2 on furnace control should be set in ON position to allow Thermidistat Thermostat to control furnace staging 12 Optional connection If wire is connected ACRDJ jumper on furnace control should be removed to allow Thermidistat Thermostat to con...

Страница 52: ... 1 4 44 3 4 1 4 44 3 5 1 5 925 45 3 7 1 5 45 3 8 1 6 44 3 2 1 4 44 3 3 1 4 950 45 3 5 1 5 45 3 6 1 5 45 3 7 1 6 45 3 8 1 6 750 43 3 7 1 6 43 3 8 1 6 42 3 2 1 4 42 3 3 1 4 4001 775 43 3 5 1 5 43 3 6 1 5 43 3 7 1 6 43 3 8 1 6 800 44 3 7 1 6 43 3 4 1 4 43 3 5 1 5 43 3 6 1 5 to 825 44 3 5 1 5 44 3 6 1 5 44 3 7 1 6 43 3 4 1 4 850 44 3 3 1 4 44 3 4 1 4 44 3 5 1 5 44 3 6 1 5 5000 875 45 3 8 1 6 44 3 2 1 ...

Страница 53: ... 3 7 1 6 44 3 2 1 3 44 3 3 1 4 44 3 4 1 4 800 45 3 5 1 5 45 3 6 1 5 45 3 7 1 6 44 3 2 1 4 825 45 3 3 1 4 45 3 4 1 4 45 3 5 1 5 45 3 6 1 5 625 43 3 8 1 6 42 3 2 1 4 42 3 3 1 4 42 3 4 1 5 8001 650 43 3 5 1 5 43 3 6 1 5 43 3 8 1 6 42 3 2 1 3 675 44 3 7 1 6 43 3 4 1 4 43 3 5 1 5 43 3 6 1 5 to 700 44 3 5 1 5 44 3 6 1 5 44 3 7 1 6 44 3 8 1 6 725 44 3 2 1 4 44 3 4 1 4 44 3 5 1 5 44 3 6 1 5 9000 750 45 3 ...

Страница 54: ...ons on furnace control See Fig 37 This keeps furnace locked in high heat operation h Turn high heat adjusting screw 3 32 hex Allen wrench counterclockwise out to decrease input rate or clockwise in to increase rate NOTE DO NOT set high heat manifold pressure less than 3 2 in wc or more than 3 8 in wc for natural gas If manifold pressure is outside this range change main burner orifices to obtain m...

Страница 55: ...In this example the orifice size and manifold pressure adjustment is within 2 percent of the furnace input rate NOTE Measured gas inputs high heat and low heat must be within 2 percent of that stated on furnace rating plate when installed at sea level or derated per that stated above when installed at higher altitudes n Remove jumper across R W W1 and W2 thermostat connections to terminate call fo...

Страница 56: ...tes an easy method of obtaining thermostat amp draw measurements The amp reading should be taken after blower motor has started and furnace is operating in low heat 1 To operate furnace in low heat turn setup switch SW1 2 to ON position See Fig 37 and connect ammeter leads across thermostat subbase R W 2 See thermostat manufacturer s instructions for adjusting the heat anticipator and for varying ...

Страница 57: ...rature CHECKLIST 1 Put away tools and instruments Clean up debris 2 Verify flame rollout manual reset switch has continuity 3 Verify that blower and main access doors are properly installed 4 Cycle test furnace with room thermostat 5 Check operation of accessories per manufacturer s instruc tions 6 Review User s Manual with owner 7 Leave literature packet near furnace 57 ...

Страница 58: ..._____ Pipe Sloped To Furnace Pipe Insulation ________ Over Ceilings ________ Low Ambient Exposed Pipes Condensate Drain ________ Unit Level or Pitched Forward ________ Internal Tubing Connections Free of Kinks and Traps ________ External Drain Connection Leak Tight and Sloped ________ Condensate Trap Primed before Start Up ________ Heat Tape Installed if Required CHECKLIST START UP ________ Gas In...

Страница 59: ... ________ Low Ambient Exposed Pipes Condensate Drain ________ Unit Level or Pitched Forward ________ Internal Tubing Connections Free of Kinks and Traps ________ External Drain Connection Leak Tight and Sloped ________ Condensate Trap Primed before Start Up ________ Heat Tape Installed if Required CHECKLIST START UP ________ Gas Input Rate Set Within 2 percent of Rating Plate ________ Temperature ...

Страница 60: ...s IN 46231 58mvb1si Manufacturer reserves the right to discontinue or change at any time specifications or designs without notice and without incurring obligations Book 1 4 Tab 6a 8a PC 101 Printed in U S A Catalog No 58MVB 1SI Pg 60 8 05 Replaces 58MVP 16SI ...

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