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Manual  2100-587J
Page 

38 of 59

31.  SEQUENCE OF OPERATION –  

 

HEATING

On a call for heat from the thermostat, the induced 

draft blower is energized.  Once sufficient draft is 

established,  the pressure switch contacts close and 

the ignition system is energized.  The direct spark 

ignitor will be energized allowing gas to flow.  At the 

same time the main valve is energized, a 30-second 

blower delay timer is activated.
After this delay, the heating speed blower relay 

energizes.  The blower will begin operating and 

remain in operation until the set delay time 

after the call for heat has been satisfied.  This 

timing sequence guarantees blower on, blower off 

operation.
This unit is equipped with a flame roll-out switch, 

which is wired in series with the control circuit.  This 

is a manual reset switch and is used for the purpose 

of preventing possible fire hazard in the event of a 

system malfunction.  If this switch has opened the 

control circuit, there could be a possible system 

malfunction.  Some of the conditions that might 

cause a roll-out to occur are blockage or sooting of 

primary heat exchanger, overfiring of furnace due to 

improper main burner orifices or incorrect manifold 

pressure, insufficient combustion air or installation 

deficiencies with respect to return air duct design or 

sizing.
Once the problem has been resolved, reset the 

switch by pressing down on the reset button on 

FIGURE 17

Sequence of Operation

Electronic Blower Control

top of the switch.  See Figure 17 for additional 

information.

32.  SEQUENCE OF OPERATION –  

COOLING

Non-Economizer

Stage 1 (Y1) cooling call activates Step 1 (partial 
capacity, 66%) of compressor capacity.

Stage 2 (Y2) cooling call activates Step 2 (full 
capacity, 100%) of compressor capacity.

With Economizer

Stage 1 (Y1) cooling call goes to economizer controls 
for decision:

•  If enthalpy control decides outdoor conditions 

are suitable for free cooling, the economizer will 
operate.

If Stage 2 cooling call is issued during 
economizer operation, the economizer will 
close and the compressor will go straight to 
Step 2 full capacity operation.

•  If enthalpy control decides outdoor conditions 

are not suitable for free cooling, the economizer 
will not operate (or close) and Step 1 of the 
compressor will operate.

 

If Stage 2 cooling call is issued, the 
compressor will shift to Step 2 full cooling 
capacity operation.

Action

System Response

Thermostat calls for heat
(W terminal is energized).

•  Combustion air blower is energized.
•  Air proving switch makes.  Airflow is established.
•  Ignition system is energized.
•  Gas valve opens and main burner lights.
•  Heat fan on delay timing begins.  When timing is complete, the circulating fan is 

energized at heat speed.

Thermostat ends call for heat.

•  Ignition system is de-energized and gas valve closes.
•  Combustion air blower is de-energized after postpurge timing.
•  Heat fan off delay timing begins.  When timing is complete, the circulating fan is 

de-energized.

Thermostat begins call for cool
(G and Y terminals re-energized).

•  Cooling contactor is energized.
•  Circulating fan is energized on cool speed after cool fan on delay timing.

Thermostat begins call for fan
(G terminal is de-energized).

•  Circulating fan is de-energized

Limit (flame rollout) opens.

•  Thermostat and ignition system are de-energized and gas valve closes.
•  Combustion air blower and circulating fan heat speed are energized.

Limit (auto reset) or flame rollout 
(manual reset) circuit closed.

•  Combustion air blower remains energized for postpurge timing.
•  The circulation fan remains energized for the selected delay off timing.
•  Normal operation resumes.

Содержание WG Series

Страница 1: ...WG5S2 B WG3S2 C WG4S2 C WG5S2 C WARNING READ ALL INSTRUCTIONS CAREFULLY BEFORE BEGINNING THE INSTALLATION THE INSTALLATION MUST COMPLY WITH THESE INSTRUCTIONS AND THE REQUIREMENTS OF ALL GOVERNING CO...

Страница 2: ...g Gas Input Rate 27 21 Standard Orifice Sizing and High Altitude Derate 29 22 Conversion of Gas Input BTUH from High to Low Rating 31 23 Measuring Air Temperature Rise 31 24 Filters 32 25 Compressor C...

Страница 3: ...igure 13 Access Internal Filter 32 Figure 14 8201 164 Compressor Control Module 33 Figure 15 Lighting and Shutdown Instruction Label 35 Figure 16 Top View of Gas Control 36 Figure 17 Sequence of Opera...

Страница 4: ...exdale Boulevard Rexdale Ontario Canada M9W 1R3 Telephone 416 447 4044 BARD MANUFACTURING COMPANY INC BRYAN OHIO 43506 USA These publications can help when installing the furnace They can usually be f...

Страница 5: ...overy Ventilator 460 Volt R WGSERV C5A WG 4 S 2 A X C X X X X X X MODEL Wall Mount Gas Electric CONTROL OPTIONS See Table page 6 VENT See Table Below COOLING CAPACITY 3 3 ton 4 4 ton 5 5 ton OUTLET X...

Страница 6: ...control is auto reset Always used with compressor control module CCM which is included See note LAC Low ambient control permits cooling operation down to 0 F CAUTION During the initial firing of the...

Страница 7: ...08 460 Rated Load Amps 11 6 12 9 8 8 9 9 6 7 15 0 17 8 10 4 11 8 5 4 20 9 23 0 12 8 14 1 6 2 Branch Circuit Selection Current 15 3 11 7 5 8 21 2 14 1 6 5 27 2 16 5 7 2 Lock Rotor Amps 83 73 38 104 83...

Страница 8: ...INTAKE COMBUSTION ENTRANCES VESTIBULE DOOR AIR INLETS CONTROL ENTRANCES CONDENSER 4 DEG PITCH IN TOP AIR OUTLET HIGH VOLTAGE ENTRANCES FRONT DOOR MIS 3240 A UNIT A B C D E F G H I J K L M N O P Q R W...

Страница 9: ...See Figure 3 and clearance information in Section 9 and Table 2 for additional information Design the duct work according to methods given by the Air Conditioning Contractors of America ACCA When duc...

Страница 10: ...carry the weight of the unit without transmitting any unit vibration 3 Concrete block walls must be thoroughly inspected to insure that they are capable of carrying the weight of the installed unit 2...

Страница 11: ...Manual 2100 587J Page 11 of 59 FIGURE 2A Mounting Instructions for WG3S2...

Страница 12: ...Manual 2100 587J Page 12 of 59 FIGURE 2B Mounting Instructions for WG4S2 and WG5S2...

Страница 13: ...ned between the supply air duct and combustible materials This is required for the first 3 of ducting It is important to insure that the 1 minimum spacing is maintained at all points Failure to do thi...

Страница 14: ...Manual 2100 587J Page 14 of 59 FIGURE 4 Wall Mounting Instructions FIGURE 5 Wall Mounting Instructions...

Страница 15: ...Manual 2100 587J Page 15 of 59 FIGURE 6 Common Wall Mounting Installations...

Страница 16: ...round the condenser inlet and discharge openings DO NOT install the unit in a location that will permit discharged air from the condenser to recirculate to the condenser inlet TABLE 2 Minimum Installa...

Страница 17: ...ncludes a stainless steel transition drain tee silicone sealant and drain tubing If unit is installed with vertical vent kit annually inspect the vent system and drain Replace any portion of the vent...

Страница 18: ...iency and cost of operation information as required for Department of Energy Energyguide Fact Sheets is based upon the fresh air blank off plate in place and is recommended for maximum energy efficien...

Страница 19: ...6 C when installed in accordance with the manufacturer s instructions Installation of Flexible Conduit Through Return Air Opening NOTE To allow proper clearance between the control panel and any vent...

Страница 20: ...rs and no rewiring is required Direct Digital Controls DDC For total and proper control using DDC a total of five controlled outputs are required four if no ventilation is installed TABLE 3 Thermostat...

Страница 21: ...W1 E A Y2 D YO Y1 L 17 3 Low Voltage Wiring No Ventilation Package 1 G Y Unit Control Panel 2 6 Block R C W1 A W2 E Y2 Y1 2 3 R C W Y2 RC W2 Y Part 8403 082 8 G Thermostat Subbase Factory Installed Ju...

Страница 22: ...R C W Y2 RC W2 INSTALL IF YOU REQUIRE VENTILATION ANYTIME BLOWER IS ON 17 Y CONTROL F 3 6 Factory Installed Jumper Unit Control Panel G 1 Thermostat Part 8403 060 1 Unit 24V Thermostat Subbase Termin...

Страница 23: ...be energized to enable minimum position NOTE Economizer Control Default Setting G R 1 Y 2 Y2 Y1 A O B is 10V 100 Depending upon application may require setting to lower value If using this 24V TERMINA...

Страница 24: ...M Factory Installed Jumper W2 or T6 Pro Part 8403 060 O B G Thermostat Part 8403 058 Thermostat Thermostat Subbase ORANGE RED BROWN WHITE BLUE PLUG 3 1 Part 8403 082 Thermostat WIRES 4 CONTROL 1 WGSER...

Страница 25: ...Manual 2100 587J Page 25 of 59 FIGURE 11 Gas Pipe Connection...

Страница 26: ...ing each pipe connection and watching for bubbles If a leak is found make the necessary repairs immediately and repeat the above test The furnace must be isolated from the gas supply piping system by...

Страница 27: ...8 Adjust manifold pressure by turning gas control regulator adjusting screw clockwise to increase pressure or turning counterclockwise to decrease pressure Manifold pressure must be within allowable...

Страница 28: ...on this is the furnace gas input 9 If water heater dryer or range pilots were left on allow for them in calculating correct furnace gas input A quick way is to allow 1 000 BTU per hour for a water he...

Страница 29: ...000 above sea level A high altitude pressure switch must also be installed for operation above 6 000 High altitude pressure switch kit number 8620 189 is designed for this application It is the insta...

Страница 30: ...e and Orifice Change Based on BTU Content 8 001 to 10 000 Requires Pressure Switch Change and Orifice Change Based on BTU Content 22500 BTU Per Burner 700 749 2 75 2 70 2 60 750 799 2 70 2 60 2 50 800...

Страница 31: ...rom furnace Locate thermometer tip in center of plenum to ensure proper temperature measurement 6 Place second thermometer in return air duct approximately 2 from furnace Locate thermometer tip in cen...

Страница 32: ...me adjust the delay on break timer on each unit to a slightly different delay time Short Cycle Protection Delay on Break An anti short cycle timer is included to prevent short cycling the compressor T...

Страница 33: ...e compressor a time period to start even if the voltage has dropped and allows the voltage to recover This delay only happens when the CC terminal energizes The delay can be set to 500 milliseconds A...

Страница 34: ...is inhibited If a fault condition occurs reverse two of the supply leads to the unit Do not reverse any of the unit factory wires as damage may occur Optional Low Ambient Control An optional low ambie...

Страница 35: ...llow these instructions exactly a fire or explosion may result causing property damage personal injury or loss of life 1 Set the thermostat to lowest setting 2 Turn off all electric power to the appli...

Страница 36: ...the upper tubes of the heat exchanger Check the exterior of the heat exchanger and the interior flue gas passages for any evidence of deterioration due to corrosion cracking or other causes If signs...

Страница 37: ...e sure the supply and return air flange sleeves or duct work are securely fastened to unit and physically sound d Supply and return grilles must be open and free from obstructions e Inspect to make su...

Страница 38: ...2 full capacity 100 of compressor capacity With Economizer Stage 1 Y1 cooling call goes to economizer controls for decision If enthalpy control decides outdoor conditions are suitable for free cooling...

Страница 39: ...trol Motor will deliver consistent CFM through voltage supply range with no deterioration 197 253V for 230 208V models 414 506V for 460V models Continuous CFM is the total air being circulated during...

Страница 40: ...uation the inducer will operate for the 30 second post purge and the comfort air blower will operate for the selected off delay If on Manual Fan operation the comfort air blower will continue to opera...

Страница 41: ...ion Scroll compressors like several other types of compressors will only compress in one rotational direction Direction of rotation is not an issue with single phase compressors since they will always...

Страница 42: ...res 18 to 28 volts AC The measured DC voltage at the female connectors in the plug should be around 15 to 27 VDC Resistance Check Measure the resistance from the end of one molded plug lead to either...

Страница 43: ...s air noise cabinet duct or motor noise interview customer if necessary Symptom Cause Procedure Air noise High static creating high blower speed Is airflow set properly Does removing filter cause blo...

Страница 44: ...o not proceed to install the control module The motor is defective and must be replaced Installing the new control module will cause it to fail also 7 Verify that the replacement control is correct fo...

Страница 45: ...52 326 153 349 153 372 154 396 156 422 158 449 160 478 162 508 WG5S2 75 DB 62 DB Low Side High Side 118 199 119 217 120 236 122 260 123 285 125 309 126 333 128 357 129 381 130 405 132 432 133 460 135...

Страница 46: ...perly before firing Failure to remove the NOx screens can result in improper operation and malfunction of the burner system FIGURE 23 Low NOx Insert 35 R 410A REFRIGERANT CHARGE This unit was charged...

Страница 47: ...00 208 230 60 1 4085 154A 4085 155 75 000 4085 156A 4085 157 100 000 4085 154A 4085 155 125 000 4085 156A 4085 157 50 000 208 230 60 3 4085 254A 4085 269 75 000 4085 255A 4085 270 100 000 4085 254A 40...

Страница 48: ...62 INDUCED DRAFT BLOWER COMPRESSOR CONTACTOR 51 GAS VALVE 20 32 32 37 35 35 40 40 35 35 32 32 32 32 32 32 34 32 62 28 28 28 37 28 27 27 42 43 41 38 36 47 41 47 28 28 28 FLAME LIMIT SPARK IGNITOR ROLLO...

Страница 49: ...or Dual Can Motor H F C T1 L1 Line 1 Low Voltage Term Block C NC Outdoor Fan Contactor Aux Compressor Contactor Compressor Block Terminal BLOWER MOTOR 2 4 INDUCED DRAFT BLOWER RELAY INDUCED DRAFT CONT...

Страница 50: ...OR 19 LOW PRESSURE SWITCH INDUCED DRAFT BLOWER RELAY MODULE 5 4 2 1 3 C FAN H E R M 240V 208V COM R CONTROL 23 HEATER C HIGH PRESSURE SWITCH NOT USED CC HPC Y ALR IF ANY ORIGINAL WIRE AS SUPPLIED WITH...

Страница 51: ...otor H F C T1 L1 Line 1 Low Voltage Term Block C NC Outdoor Fan Contactor Aux Compressor Contactor Compressor Block Terminal BLOWER MOTOR 2 4 INDUCED DRAFT BLOWER RELAY INDUCED DRAFT CONTROL OPT R CON...

Страница 52: ...RAFT BLOWER SWITCH COMPRESSOR CONTACTOR 51 GAS VALVE 20 32 52 37 35 35 40 40 35 35 32 HIGH A 32 32 32 32 34 32 32 62 28 28 28 37 28 27 27 42 44 41 38 36 47 41 33 28 28 28 FLAME LIMIT SPARK IGNITOR ROL...

Страница 53: ...URNACE CONTROL BOARD K4 K4 K3 COOL PRIM L1 HIGH PRESSURE 208 24VAC 240 COM Transformer Use for 208V Operation BOARD CONTROL FURNACE VALVE GAS 1 SWITCH PRESSURE K1 K1 K4 K1 K2 K3 12 11 3 Y 6 8 10 7 9 4...

Страница 54: ...35 35 40 40 35 35 32 47 T2 32 32 32 32 34 32 32 62 28 28 28 37 28 27 27 42 44 41 38 36 47 41 33 28 28 28 FLAME LIMIT 32 38 PRIMARY FLAME SENSOR 39 PRESSURE SWITCH 32 32 28 35 38 51 51 51 46 46 46 T3...

Страница 55: ...ROL BOARD K4 K2 K4 Aux COOL D1 L1 HIGH PRESSURE 208 24VAC 240 COM Transformer 9 Use for 208V Operation CONTROL FURNACE VALVE GAS 1 SWITCH PRESSURE K1 K1 K4 K1 K2 K3 12 11 3 6 8 10 7 ROLLOUT 5 4 2 K3 L...

Страница 56: ...IE BLACK WHTIE SOLENOID BLACK WHITE BLACK 27 USE COPPER CONDUCTORS SUITABLE FOR AT LEAST 75 C TERM BLOCK GRAY IF ANY ORIGINAL WIRE AS SUPPLIED WITH THE APPLIANCE MUST BE REPLACED IT MUST BE REPLACED W...

Страница 57: ...3 K4 K4 K2 COOL D1 L1 HIGH PRESSURE 208 24VAC 240 COM Transformer Use for 208V Operation BOARD CONTROL FURNACE VALVE GAS 1 SWITCH PRESSURE K1 K1 K4 K1 K2 K3 12 11 3 6 8 10 7 9 5 4 2 LIMIT ROLLOUT FLAM...

Страница 58: ...IE SOLENOID BLACK WHITE BLACK BLACK 27 USE COPPER CONDUCTORS SUITABLE FOR AT LEAST 75 C TERM BLOCK GRAY IF ANY ORIGINAL WIRE AS SUPPLIED WITH THE APPLIANCE MUST BE REPLACED IT MUST BE REPLACED WITH WI...

Страница 59: ...RD K3 K4 K4 K2 COOL D1 LOW PRESSURE HIGH PRESSURE 208 24VAC 240 COM Transformer Use for 208V Operation 6 BOARD L1 VALVE GAS 1 SWITCH PRESSURE K1 K1 K4 K1 K2 K3 12 11 CONTROL 3 8 10 7 9 5 4 2 W2 ROLLOU...

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