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Page 54

VII− Wiring and Sequence of Operation

NOTE − The thermostat selection DIP switch on the control
board is factory−set in the TWO−STAGE" position.

Applications Using a Two−Stage Thermostat

A − Heating Sequence −− Control Board Thermostat
Selection DIP switch in Variable Capacity" Position

1. On a call for heat, thermostat first−stage contacts close

sending a signal to the integrated control. The inte-
grated control runs a self-diagnostic program and
checks high temperature limit switches for normally
closed contacts and pressure switches for normally
open contacts.The combustion air inducer is ener-
gized at ignition speed, which is approximately the
same as the inducer speed at 70 percent firing rate.

2. Once the control receives a signal that the low−fire

pressure switch has closed, the combustion air induc-
er begins a 15−second pre−purge in ignition speed.

3. After the pre−purge is complete, a 20−second initial ig-

nitor warm−up period begins. The combustion air in-
ducer continues to operate at the ignition speed.

4 − After the 20−second warm−up period has ended, the gas

valve is energized and ignition occurs. At the same time,
the control module begins an indoor blower 45−second
ON−delay. When the delay ends, the indoor blower
motor is energized at a speed that matches the firing
rate. After the 10−second ignition stabilization delay
expires, the inducer speed is adjusted to the appropri-

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Содержание G71MPP

Страница 1: ...sented as a recom mendation only and do not supersede or replace local or state codes In the absence of local or state codes the guidelines and procedures outlined in this manual except where noted are recommendations only and do not consti tute code TABLE OF CONTENTS Specifications Page 2 Optional Accessories Page 3 Blower Data Page 4 I Unit Components Page 16 Control Box 16 Blower Compartment 28...

Страница 2: ...nnections in Intake Exhaust Pipe PVC 2 2 2 2 2 2 2 2 3 3 Condensate Drain Trap PVC pipe i d 1 2 1 2 1 2 1 2 1 2 with field supplied PVC coupling o d 3 4 3 4 3 4 3 4 3 4 hose with hose clamp i d x o d 1 x 1 1 4 1 x 1 1 4 1 x 1 1 4 1 x 1 1 4 1 x 1 1 4 Gas pipe size IPS 1 2 1 2 1 2 1 2 1 2 Indoor Blower Wheel nominal diameter x width in 10 x 8 10 x 10 11 1 2 x 10 11 1 2 x 10 11 1 2 x 10 Motor output ...

Страница 3: ...6K70 26K70 26K70 Heat Cable Tape Fiberglass 1 2 in x 66 ft 36G53 36G53 36G53 Aluminum foil 2 in x 60 ft 16P89 16P89 16P89 Condensate Trap Alternate Location Kit Up Flow Only 76M20 76M20 76M20 CONTROLS ComfortSenset 7000 Thermostat Y0349 Y0349 Y0349 TERMINATION KITS See Installation Instructions for specific venting information Termination Kits Concentric 2 in 71M80 69M29 3 in 60L46 60L46 Wall Clos...

Страница 4: ... values shown in 70 and 100 grey shaded columns only Variable Rate Capacity Mode furnace automatically adjusts firing rate based on first and second stage cycle times all columns Cool Mode Cooling Blower Performance table First stage COOL two stage air conditioning units only is approximately 70 of the same second stage COOL speed position Continuous Fan speeds are approximately 28 38 70 and 100 D...

Страница 5: ...etween stages values shown in 70 and 100 grey shaded columns only Variable Rate Capacity Mode furnace automatically adjusts firing rate based on first and second stage cycle times all columns Cool Mode Cooling Blower Performance table First stage COOL two stage air conditioning units only is approximately 70 of the same second stage COOL speed position Continuous Fan speeds are approximately 28 38...

Страница 6: ...ues shown in 70 and 100 grey shaded columns only Variable Rate Capacity Mode furnace automatically adjusts firing rate based on first and second stage cycle times all columns Cool Mode Cooling Blower Performance table First stage COOL two stage air conditioning units only is approximately 70 of the same second stage COOL speed position Continuous Fan speeds are approximately 28 38 70 and 100 DIP s...

Страница 7: ...e W1 demand results in 70 firing rate W2 results in 100 firing rate No delay between stages values shown in 70 and 100 grey shaded columns only Variable Rate Capacity Mode furnace automatically adjusts firing rate based on first and second stage cycle times all columns Cool Mode Cooling Blower Performance table First stage COOL two stage air conditioning units only is approximately 70 of the same ...

Страница 8: ...alues shown in 70 and 100 grey shaded columns only Variable Rate Capacity Mode furnace automatically adjusts firing rate based on first and second stage cycle times all columns Cool Mode Cooling Blower Performance table First stage COOL two stage air conditioning units only is approximately 70 of the same second stage COOL speed position Continuous Fan speeds are approximately 28 38 70 and 100 DIP...

Страница 9: ... stages values shown in 70 and 100 grey shaded columns only Variable Rate Capacity Mode furnace automatically adjusts firing rate based on first and second stage cycle times all columns Cool Mode Cooling Blower Performance table First stage COOL two stage air conditioning units only is approximately 70 of the same second stage COOL speed position Continuous Fan speeds are approximately 28 38 70 an...

Страница 10: ...o stage mode W1 demand results in 70 firing rate W2 results in 100 firing rate No delay between stages values shown in 70 and 100 grey shaded columns only Variable Rate Capacity Mode furnace automatically adjusts firing rate based on first and second stage cycle times all columns Cool Mode Cooling Blower Performance table First stage COOL two stage air conditioning units only is approximately 70 o...

Страница 11: ...ages values shown in 70 and 100 grey shaded columns only Variable Rate Capacity Mode furnace automatically adjusts firing rate based on first and second stage cycle times all columns Cool Mode Cooling Blower Performance table First stage COOL two stage air conditioning units only is approximately 70 of the same second stage COOL speed position Continuous Fan speeds are approximately 28 38 70 and 1...

Страница 12: ...en stages values shown in 70 and 100 grey shaded columns only Variable Rate Capacity Mode furnace automatically adjusts firing rate based on first and second stage cycle times all columns Cool Mode Cooling Blower Performance table First stage COOL two stage air conditioning units only is approximately 70 of the same second stage COOL speed position Continuous Fan speeds are approximately 28 38 70 ...

Страница 13: ...wo stage mode W1 demand results in 70 firing rate W2 results in 100 firing rate No delay between stages values shown in 70 and 100 grey shaded columns only Variable Rate Capacity Mode furnace automatically adjusts firing rate based on first and second stage cycle times all columns Cool Mode Cooling Blower Performance table First stage COOL two stage air conditioning units only is approximately 70 ...

Страница 14: ...en stages values shown in 70 and 100 grey shaded columns only Variable Rate Capacity Mode furnace automatically adjusts firing rate based on first and second stage cycle times all columns Cool Mode Cooling Blower Performance table First stage COOL two stage air conditioning units only is approximately 70 of the same second stage COOL speed position Continuous Fan speeds are approximately 28 38 70 ...

Страница 15: ...URE SWITCHES CONDENSER COIL BURNER ACCESS PANEL BLOWER ACCESS PANEL SIGHT GLASS VARIABLE SPEED COMBUSTION AIR INDUCER VARIABLE SPEED BLOWER MOTOR INTEGRATED CONTROL ELBOW shipping location TRANSFORMER BAG ASSEMBLIES shipping location VARIABLE CAPACITY GAS VALVE SHIPPING BLOCK 135 units only PRESSURE SWITCH ASSEMBLY WITH PRESSURE CONDITIONING DEVICE ...

Страница 16: ...MER CIRCUIT BREAKER DOOR INTERLOCK SWITCH 3 Circuit Breaker CB8 A 24V circuit breaker is also located in the control box The switch provides overcurrent protection to the trans former T1 The breaker is rated 3A at 32V If the current exceeds this limit the breaker will trip and all unit opera tion will shutdown The breaker can be manually reset by pressing the button on the face See figure 3 FIGURE...

Страница 17: ...ing a two stage thermostat the system will operate in a variable capacity sequence mode In this mode the control will vary the firing rate anywhere between 40 and 100 of full capacity The indoor blower will be automatically ad justed accordingly to provide the appropriate airflow at any rate On the initial call for low fire the furnace will operate at 40 and will remain there until the heat call i...

Страница 18: ...ALS NEUTRAL TERMINALS IGNITOR CONNECTOR 7 SEGMENT DIAGNOSTIC LED DIAGNOSTIC PUSH BUTTON FACTORY TEST HEADER PINS FACTORY USE ONLY TABLE 12 SureLight Board 6 Pin Terminal Designation PIN Function 1 Data Input From Motor 2 Common 3 Furnace Size Resistor Input 4 Data Output To Motor 5 5 Volt Bias Supply 6 Furnace Size Resistor Input TABLE 13 SureLight Board 12Pin Terminal Designation PIN Function 1 N...

Страница 19: ...Page 19 FIGURE 5 G71MPP INTEGRATED CONTROL CONFIGURATION GUIDE ...

Страница 20: ...e factory with a blower off delay of 90 seconds The blower off delay affects comfort and is adjustable to satisfy individ ual applications Adjust the blower off delay to achieve a supply air temperature between 90 and 110 F at the exact moment that the blower is de energized Longer off delay settings provide lower supply air temperatures shorter set tings provide higher supply air temperatures Tab...

Страница 21: ... which has the greatest effect on blower motor performance Table 19 provides the cooling mode blower speed ramping options that will result from different switch settings The cooling mode blower speed ramping options are detailed below TABLE 19 Cooling Mode Blower Speed Ramping Ramping Option Switch 12 Switch 13 A Factory Off Off B On Off C Off On D On On Ramping Option A Factory Selection D Motor...

Страница 22: ...ables 20 and 21 provides the heating mode blower speeds that will result from different switch settings Figure 6 indicates the effect the DIP switch set tings tables 20 21 above have upon the heating airflow at various furnace firing rates Refer to tables 1 through 11 for corresponding cfm values TABLE 21 High Heat Blower Speeds Thermostat Demand Blower Speed Adjust ments DIP SWITCH SETTINGS 17 18...

Страница 23: ...eased the displayed item will be selected Once all items in the menu have been dis played the menu resumes from the beginning until the but ton is released Error Code Recall Mode Select E from the menu to access the most recent 10 error codes Select c from the Error Code Recall menu to clear all error codes Button must be pressed a second time while c is flashing to confirm command to delete codes...

Страница 24: ...o change blinking remain in field test mode Solid exit field test mode Solid c start pressure switch calibration TABLE 24 Field Test Menu Options These options are displayed when the button is used in diagnostic recall mode DISPLAY ACTION when button released No change displaying error history remain in diagnostic recall mode Solid 3 horizontal bars exit diagnostic recall mode Solid c clear error ...

Страница 25: ...w if shorted or out of range 200 Rollout circuit open or previously opened 201 Circulator COM failure unable to communicate w circulating motor blower 202 Circulating motor resistor mis match or resistor missing 204 Gas Valve Miswired Resume normal operation after error corrected 223 Low Pressure Switch Failed Open 224 Low Pressure Switch Failed Closed 225 High Pressure Switch Failed Open 226 High...

Страница 26: ...gizes D on a call for de humidification Dehumidification Call 2 On On On Demand 0 VAC High 70 PRECISION MODE operates independent of a Y1 thermostat demand Normal Operation 1 On On On Acceptable 24 VAC High 100 Dehumidification mode begins when humidity is greater than set point Dehumidification call 2 On On On Demand 0 VAC High 70 Dehumidification call ONLY 1 On On On Demand 0 VAC High 70 Comfort...

Страница 27: ... Demand 0 VAC High 70 ComfortSenset 7000 thermostat will keep out door unit energized after cooling temperature set point has been reached in order to maintain room humidity setpoint ROOM THERMOSTAT CALLS FOR FIRST AND SECOND STAGE COOLING BASIC MODE only active on a Y1 thermostat demand Normal Operation 1 On On On On Acceptable 24 VAC High 100 ComfortSenset 7000 thermostat energizes Y2 and de ene...

Страница 28: ...used on other Lennox furnace models are not interchangeable with motors used on the G71MPP furnace line A solid state controller is permanently attached to the motor The controller is primarily an A C to D C con verter Converted D C power is used to drive the motor The controller contains a microprocessor which moni tors varying conditions inside the motor such as motor workload G71MPP BLOWER MOTO...

Страница 29: ...locks out Reset controller by momen tarily turning off power to unit The DC filter capacitors inside the controller are connected electrically to the motor supply wires The capacitors take approximately 5 minutes to discharge when the disconnect is opened For this reason it is necessary to wait at least 5 minutes after turning off power to the unit before attempt ing to service motor DANGER Discon...

Страница 30: ...not apply 24V to pins 2 and 4 on P49 Doing so will cause permanent damage to the motor 6 Motor should run at 75 7 Test is complete Remove jumpers and reconnect plugs Another option is to use the TECMate PRO with the 16 to 4 pin adaptor The use of the TECMate PRO isolates the motor from the integrated control Follow the instructions provided with the kit If the motor runs do not replace FIGURE 10 B...

Страница 31: ...ycle will immediately step down to the demanded or de fault 3 off Along with the PWM signal is a 24VAC Enable signal that is connected on the integrated control terminal G The inte grated control will not obey the PWM signal unless the en able signal is present C Heating Components 1 Ignitor The ignitor is made of durable silicon nitride Ignitor longev ity is enhanced by controlling voltage to the...

Страница 32: ... If unit is running and flame rollout is detected the gas valve will close and ignition control will be disabled Rollout can be caused by a blocked heat exchanger flue or lack of combustion air The switch is factory set to trip open at 250 F and cannot be adjusted The switch can be manually reset To manually reset a tripped switch push the reset but ton located on the control 5 Primary Limit Contr...

Страница 33: ... switches serve four func tions First they establish calibration points for the vent cal ibration routine The combustion air inducer s speed at a giv en firing rate is a function of the vent system restriction The calibration routine establishes the inducer speed required to make low and high fire switches for a given vent pipe instal lation and interpolates the speeds required to achieve all in t...

Страница 34: ...ck high pressure switch if open increase RPM by 250 Repeat this step until closed 8 Decrease RPM by 50 check after 5 seconds Re peat this step until switch is open 9 Keep this RPM as RPM2 10 Set RPM to 0 End calibration NOTE If after a successful calibration and a heat call is present the integrated control will by pass the pre purge state and go straight into ignitor warm up After calibration the...

Страница 35: ...n table 33 Duel Pressure Switch Single Pressure Switch with Pressure Conditioning Device The CAI is installed on the cold end header box The cold end header box is a single piece made of hard plastic The box has an internal channel where the combustion air inducer creates negative pressure at unit start up The channel contains an orifice used to regulate flow created by the CAI The box has pressur...

Страница 36: ...llowed 15 Not Allowed 6 Not Allowed 4 Not Allowed 10 Not Allowed Not Allowed 25 Not Allowed 10 Not Allowed Requires field provided and installed 1 1 2 exhaust accelerator Proposed vent pipe size ______ Termination kit catalog number _____________ Vent pipe equivalency value from table 34 ______ Total number of 90 elbows required indoors and outdoors ______ X 5 ______ equivalent feet of pipe Total ...

Страница 37: ... to optimize the velocity of the exhaust gas as it exits the termination Refer to table 37 NOTE The exhaust pipe should be offset a minimum of 12 inches to avoid the possibility of water droplets being re leased from the exhaust termination The minimum ex haust vent length is 15 ft Shorter exhaust vent lengths may result in the discharge of water droplets from the exhaust termination in spite of t...

Страница 38: ...o the minimum equivalent length listed G71MPP 60C 110 must have 90 street ell supplied installed directly into unit flue collar G71MPP 60D 135 must have 3 to 2 reducing ell supplied installed direct ly into unit flue collar TABLE 36 MAXIMUM VENT PIPE LENGTHS ALTITUDE G71MPP MODEL MAXIMUM EQUIVALENT VENT LENGTH FEET 2 PIPE 2 1 2 PIPE 3 PIPE 4 PIPE 0 7500 0 2286 m 070 75 135 150 250 090 50 100 125 2...

Страница 39: ...hut down for an extended period of time such as a vacation home make provisions for draining conden sate collection trap and lines Exhaust Piping Figures 19 and 20 NOTE A 2 diameter street ell is located on the blower deck of 60C 110 units Street ell must be glued with ABS solvent cement directly into the unit flue collar See figure 19 A 3 to 2 reducing ell is located on the blower deck of the 60D...

Страница 40: ...2 1 2 3 OR 4 2 2 or 45 MAX 45 MAX SIDE VIEW Max 2 pipe length between reducing elbow and transition when 4 pipe is used FIGURE 20 TYPICAL EXHAUST PIPE CONNECTIONS HORIZONTAL DIRECT VENT APPLICATIONS Horizontal Right Hand Air Discharge Application Shown 2 2 2 2 dia pipe 2 1 2 3 OR 4 DO NOT transition from smaller to larger pipe size in horizontal runs TRANSITION 36B 070 36C 090 60C 090 60C 110 60D ...

Страница 41: ...090 60C 090 60C 110 36B 070 36C 090 60C 090 60C 110 60D 135 2 2 2 2 2 2 2 1 2 3 OR 4 TRANSITION 2 TRANSITION 2 1 2 3 OR 4 FIGURE 22 TYPICAL AIR INTAKE PIPE CONNECTIONS HORIZONTAL DIRECT VENT APPLICATIONS Horizontal Right Hand Air Discharge Application Shown 2 2 2 2 TRANSITION TRANSITION 2 2 1 2 3 OR 4 2 1 2 3 OR 4 Limit pipe length to 4 in 135 applications 2 36B 070 36C 090 60C 090 60C 110 60D 135...

Страница 42: ...mm minimum above for vent installations in Canada 12 in 305mm minimum for appliances 100 000 Btuh 30 kW 36 in 0 9m minimum for appliances 100 000 Btuh 30 kW F Clearance to mechanical air supply inlet for vent installations in USA 36 in minimum 914mm G Clearance to mechanical air supply inlet for vent installations in Canada 72 in 1829mm mini mum H Do not point terminations into recessed areas such...

Страница 43: ...ld be as short as possible See fig ure 25 7 On field supplied terminations the end of the exhaust pipe must extend a minimum of 8 203mm beyond the end of the intake pipe 8 If intake and exhaust piping must be run up a side wall to position above snow accumulation or other ob structions piping must be supported every 3 ft 9m as shown in figure 18 Refer to figure 28 for proper piping method In addit...

Страница 44: ...d 8 203 MIN 1 2 13 FOAM INSULATION 1 2 13 FOAM INSULATION IN UNCONDITIONED SPACE PROVIDE SUPPORT FOR INTAKE AND EXHAUST LINES EVERY 36 914 OUTSIDE WALL Inches mm SIDE VIEW DIRECT VENT WALL RING TERMINATION 15F74 SIZE TERMINATION PIPE PER TABLE 37 FIELD PROVIDED REDUCER MAY BE REQUIRED TO ADAPT LARGER VENT PIPE SIZE TO TERMINATION FIGURE 29 1 2 13 Foam Insulation in Unconditioned Space EXHAUST VENT...

Страница 45: ...OOF INSULATION SHOULDER OF FITTINGS PROVIDE SUPPORT OF PIPE ON TOP PLATE ALTERNATE INTAKE PIPE INTAKE PIPE INSULATION optional EXTERIOR PORTION OF CHIMNEY INSULATE TO FORM SEAL SHEET METAL TOP PLATE MINIMUM 12 305mm ABOVE ROOF SIZE TERMINATION PIPE PER TABLE 37 Condensate Piping This unit is designed for either right or left side exit of con densate piping in either upflow or downflow applications...

Страница 46: ... PVC coupling The inner diameter of each stub will accept standard 1 2 diameter PVC pipe NOTE Vinyl tubing may be used for condensate drain Tubing must be 1 1 4 OD X 1 ID and should be attached to the drain stubs on the trap using a hose clamp 4 Glue the field provided drain line to the tee Route the drain line to an open drain As an alternate clear vinyl tubing may be used to drain condensate awa...

Страница 47: ...de mand and again wait for the combustion air inducer to stop At this point the trap should be primed with suffi cient water to ensure proper condensate drain opera tion BEFORE BEFORE PLACING THE UNIT INTO OPERA TION the unit smell all around the furnace area for gas Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor The gas valve on the G71MPP is ...

Страница 48: ...t allow more than 0 5 W C drop in pressure between gas meter and unit Supply gas pipe must not be smaller than unit gas connection Compounds used on gas piping threaded joints should be resistant to action of liquefied petroleum gases C Testing Gas Piping IMPORTANT In case emergency shutdown is required turn off the main shut off valve and disconnect the main power to unit These controls should be...

Страница 49: ...gas flow rate Multiply the gas flow rate by the heating value to determine the unit input rate If manifold pressure is correct and the unit input rate is incorrect check gas orifices for proper size and restriction 3 Remove temporary gas meter if installed NOTE To obtain accurate reading shut off all other gas appliances connected to meter TABLE 39 Gas Flow Rate Ft 3 Hr Seconds for 1 Revolution Ga...

Страница 50: ...re switch is factory set and re quires no adjustment NOTE A natural to L P propane gas changeover kit is nec essary to convert this unit Refer to the changeover kit installation instruction for the conversion procedure TABLE 42 Conversion Kit Requirements and Manifold Test Pressures Model Input Size LP Propane Kit High Altitude Pressure Switch Kit Manifold Pressure at All Altitudes in w g 0 10 000...

Страница 51: ...using a single stage thermostat fur nace must fire at least 10 minutes before switching to second stage heat 3 After plenum thermometers have reached their high est and steadiest readings subtract the two readings The difference should be in the range listed on the unit rating plate If the temperature is too low decrease blower speed If temperature is too high first check the firing rate Provided ...

Страница 52: ...gure 1 when disassem bling unit Use papers or protective covering in front of fur nace while removing heat exchanger assembly 1 Turn off electrical and gas supplies to the furnace 2 Remove the upper and lower furnace access panels 3 Disconnect the 2 pin plug from the gas valve 4 Remove gas supply line connected to gas valve Re move gas valve manifold assembly 5 Remove sensor wire from sensor Disco...

Страница 53: ...nect sensor wire and reconnect 2 pin plug from ignitor 38 Secure burner box assembly to vestibule panel using four existing screws Make sure burners line up in center of burner ports 39 Reinstall gas valve manifold assembly Reconnect gas supply line to gas valve 40 Reinstall burner box cover 41 Reconnect 2 pin plug to gas valve 42 Replace the blower compartment access panel 43 Refer to instruction...

Страница 54: ... ener gized at ignition speed which is approximately the same as the inducer speed at 70 percent firing rate 2 Once the control receives a signal that the low fire pressure switch has closed the combustion air induc er begins a 15 second pre purge in ignition speed 3 After the pre purge is complete a 20 second initial ig nitor warm up period begins The combustion air in ducer continues to operate ...

Страница 55: ...actory set at 7 minutes adjustable to 12 minutes 5 If the heating demand continues beyond the second stage on delay the integrated control energizes the combustion air inducer at 70 percent speed The in door blower motor is adjusted to a speed which matches the target rate A fixed 10 minute third stage on delay is initiated 6 If the heating demand continues beyond the third stage on delay the inte...

Страница 56: ...Trial Wait For Ignition Stabilization Delay Post Purge 20Seconds Soft Lockout Error Code Flashes YES NO NO YES Call For Heat Ends NO YES YES NO C A L L F O R 1 S T S T A G E H E A T 3A 2 1 1 OR Call For Heat NO 4 Calibrations Attempted Calibration Successful Wait 5 minutes NO NO Soft Lockout Error Code Flashes YES YES YES 2 1 1 2 Set Target Firing Rate Based on Thermostat Signals Present SOF T LOC...

Страница 57: ...O Error Code Flashes NO YES Wait 5 Minutes 3A 2 1 2 1 System will always light at 70 even if 2nd stage call for heat is in place If the high pressure switch does not close within 5 attempts the system will operate at low fire for the remainder of the call for heat at request Combustion Air Inducer ON 100 Rate Speed Increase Combustion Air Inducer Speed if Not at 100 Rate Speed Adjust Indoor Blower...

Страница 58: ...ostat 1 4 3A 3B YES OR Combustion Air Inducer switched to 70 rate speed Adjust Indoor Blower to appropiate speed Combustion Air Inducer OFF after 20 Second Post Purge Indoor Blower OFF after OFF Delay RUN MODE 2 STAGE THEREMOSTAT 1ST OR 2ND STAGE CALL FOR HEAT ALL INPUTS MONITORED LIMIT PRESSURE CALL FOR HEAT COOL FLAME LEVEL RUN MODE SINGLE STAGE THERMOSTAT ALL INPUTS MONITORED LIMIT PRESSURE CAL...

Страница 59: ... Code Flashes YES NO NO YES Call For Heat Ends NO YES YES NO C A L L F O R H E A T 3B 1 4 Move to Mid Firing Rate and High Firing Rate after 2nd and 3rd Stage Delays based on DI P Switch selections Pressure Switch Calibration Call For Heat NO 4 Calibrations Attempted Calibration Successful Wait 5 minutes NO NO Soft Lockout Error Code Flashes YES YES YES SOFT LOCKOUT IS RESE T AUTOMATICAL LYAFTER O...

Страница 60: ... mode High Cooling mode High Cooling mode Per Ramping Profile NO NO YES NO 5 1 2 1 2 2 2 1 Indoor Blower On After 2 second delay Energize Indoor Blower Per Ramping Profile Energize Indoor Blower Maintain Indoor Blower Maintain Indoor Blower at De Energize Indoor Blower 2nd stage cooling operation requires a 2 stage thermostat a 2 stage cooling system and jumpers W915 must be be cut The control wil...

Страница 61: ...Cooling Go to Call for Heat 2 StageThermostat Go to Call for Heat Single Stage Thermostat 6 1 4 5 1 1 Call for Continuous Blower Indoor Blower On Maintain Indoor Blower at set speed Maintain Indoor Blower at set speed OR Maintain Indoor Blower at set speed Indoor Blower Per Indoor blower low cooling mode and high cooling mode have specific ON OFF and speed ramping profiles The specific profile is ...

Страница 62: ...ond stage heat ON delay OFF 7 minutes ON 12 minutes ON Intact Intact Intact S1 T STAT CONTROL TERM STRIP OUTDOOR UNIT 1 Heat 2 Cool NOTE Use DIP switch 3 to set second stage heat ON delay OFF 7 minutes ON 12 minutes ON Cut Intact Intact S1 T STAT CONTROL TERM STRIP OUTDOOR UNIT 1 Heat 2 Cool with t stat with dehumidification mode NOTE Use DIP switch 3 to set second stage heat ON delay OFF 7 minute...

Страница 63: ...W914 DS to R Dehumidifi cation or Harmony IIIt W951 O to R Heat Pumps 2 Heat 2 Cool OFF Cut Intact Intact S1 T STAT CONTROL TERM STRIP OUTDOOR UNIT 2 Heat 2 Cool with t stat with dehumidifica tion mode OFF Cut Cut Intact S1 T STAT CONTROL TERM STRIP OUTDOOR UNIT 2 Heat 1 Cool OFF Intact Intact Intact S1 T STAT CONTROL TERM STRIP OUTDOOR UNIT R required on some units ...

Страница 64: ...hermostat w dual fuel capa bilities Capable of 2 stage gas heat control DIP Switch 1 OFF Intact Intact Cut L7724U T STAT CONTROL TERM STRIP HEAT PUMP 67M41 Y H L Y2 D B L Y2 T T outdoor sensor Dual Fuel Two Stage Heat Pump ComfortSense 7000 L7724U thermostat w dual fuel capa bilities Capable of 2 stage gas heat control DIP Switch 1 OFF Cut Intact Cut CONTROL TERM STRIP HEAT PUMP out blue 67M41 H L...

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