Unitary products group FC8V*UH Installation Manual Download Page 28 | Manualshive

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Subject to change without notice. Printed in U.S.A.

271001-UIM-A-0407

Copyright

©

by York International Corp. 2007. All rights reserved.

Supersedes: 167187-UIM-C-0806

Unitary

5005

Norman

Product

York

OK

Group

Drive

73069

SECTION IX: WIRING DIAGRAM

FIGURE 28:

Wiring Diagram

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Summary of Contents for FC8V*UH

Page 1: ...uding but not limited to building electrical and mechanical codes LIST OF SECTIONS SAFETY 1 DUCTWORK 4 FILTERS 8 GAS PIPING 8 ELECTRICAL POWER 10 VENT SYSTEM 14 SAFETY CONTROLS 19 START UP AND ADJUSTMENTS 20 WIRING DIAGRAM 28 LIST OF FIGURES Dimensions 6 Typical Attic Installation 7 Typical Suspended Furnace Crawl Space Installation 7 Side Return Cutout Markings 8 Gas Valve 8 Upflow Gas Piping 8 H...

Page 2: ...es from combustible materials as listed under Clearances to Combustibles in Table 1 Provide clearances for servicing ensuring that service access is allowed for both the burners and blower These models ARE NOT CSA listed or approved for installation into a Manufactured Mobile Home This furnace is not approved for installation in trailers or recre ational vehicles Failure to carefully read and foll...

Page 3: ...ted Never store items such as the following on near or in contact with the fur nace 1 Spray or aerosol cans rags brooms dust mops vacuum cleaners or other cleaning tools 2 Soap powders bleaches waxes or other cleaning com pounds plastic items or containers gasoline kerosene ciga rette lighter fluid dry cleaning fluids or other volatile fluid 3 Paint thinners and other painting compounds 4 Paper ba...

Page 4: ...perates at the specified external static pressure and within the air temperature rise specified on the nameplate Table 2 is a guide for determining whether the rectangular duct system that the furnace is being connected to be of sufficient size for proper fur nace operation Use the Example below to help you in calculating the duct area to deter mine whether the ducts have sufficient area so that t...

Page 5: ...e supply plenum On all installations without a coil a removable access panel is recommended in the outlet duct such that smoke or reflected light would be observable inside the casing to indi cate the presence of leaks in the heat exchanger This access cover shall be attached in such a manner as to prevent leaks TABLE 2 Minimum Duct Sizing For Proper Airflow Airflow Return1 Rectangular2 Round2 Sup...

Page 6: ... floor support with required service accessibility IMPORTANT If an external mounted filter rack is being used see the instructions provided with that accessory for proper hole cut size HORIZONTAL MODELS IMPORTANT This furnace may be installed in a horizontal position on either side as shown above It must not be installed on its back FIGURE 1 Dimensions A 40 FRONT B 3 4 26 3 4 1 1 2 1 1 4 C 20 5 8 ...

Page 7: ...e removed and a new plenum installed that is the proper size for the new furnace Attach the return plenum to the furnace inlet duct flanges This is typi cally through the use of S cleat material when a metal plenum is used The use of an approved flexible duct connector is recommended on all installations The connection of the plenum to the furnace and all the ducts connecting to the plenum must be...

Page 8: ...N IV GAS PIPING GAS SAFETY IMPORTANT Plan your gas supply before determining the correct gas pipe entry Use 90 degree service elbow s or short nipples and con ventional 90 degree elbow s to enter through the cabinet access holes GAS PIPING INSTALLATION Properly sized wrought iron approved flexible or steel pipe must be used when making gas connections to the unit If local codes allow the use of a ...

Page 9: ...ping The gas valve body is a very thin casting that cannot take any external pressure Never apply a pipe wrench to the body of the gas valve when installing piping A wrench must be placed on the octag onal hub located on the gas inlet side of the valve Placing a wrench to the body of the gas valve will damage the valve causing improper operation and or the valve to leak MANUAL SHUT OFF VALVE GAS P...

Page 10: ...ller must take every precaution to insure that the furnace has been converted to the proper gas orifice size when the furnace is installed Do not attempt to drill out any orifices to obtain the proper orifice size Drilling out a gas orifice will cause misalignment of the burner flames causing premature heat exchanger burnout high levels of carbon monoxide excessive sooting a fire hazard personal i...

Page 11: ...ity is corrected Refer to FURNACE DIAGNOSTICS section of the User s Information Maintenance Service Manual provided with this furnace for symptoms of reversed power supply polarity LOW VOLTAGE CONTROL WIRING CONNECTIONS Install the field supplied thermostat by following the instructions that come with the thermostat With the thermostat set in the OFF position and the main electrical source disconn...

Page 12: ...t Stage Cool Y2 Second Stage Cool W2 Second Stage Heat G Fan R 24 Volt Hot W First Stage Heat Y1 First Stage Cool R 24 Volt Hot Y Y2 Single Second Stage Cool Y2 Second Stage Cool W2 Second Stage Heat G Fan Y2 Second Stage Cool E W1 First Stage Heat RC 24 Volt Hot Cool XFMR THERMOSTAT 24V HUMIDIFIER Optional X L Malfunction Light O Reversing Valve Energized in Cool TWO STAGE AIR CONDITIONING Comfor...

Page 13: ...eversing Valve Energized in Cool O Reversing Valve Energized in Cool O Reversing Valve Energized in Cool Y2 Second Stage Heat Cool DHM Dehumidistat HUM Dehumidification Open on Humidity Rise Y2 Second Stage Heat Cool Y2 Second Stage Heat Cool Y2 Second Stage Heat Cool Y 2 AUX Auxiliary Heat E W1 First Stage Auxiliary Heat E W1 First Stage Auxiliary Heat W Auxiliary Heat HM Humidistat BSG Bonnet Se...

Page 14: ...essory Connections FIGURE 12 Vent Termination 115 VOLT HUMIDIFER 115 VOLT ELECTRONIC AIR CLEANER EAC HOT HUM HOT BLK WHT EAC HUM NEUTRALS SWITCHED CIRCUITS BLK WHT LOWEST DISCHARGE OPENING LISTED CAP LISTED GAS VENT H min MINIMUM HEIGHT FROM ROOF TO LOWEST DISCHARGE OPENING 12 X ROOF PITCH IS X 12 TABLE 9 Roof Pitch ROOF PITCH H min ft m Flat to 6 12 1 0 0 30 6 12 to 7 12 1 25 0 38 Over 7 12 to 8 ...

Page 15: ...o the authority having jurisdiction Venting into an unlined masonry chimney or concrete chimney is prohibited Whenever possible B 1 metal pipe should be used for venting Where use of an existing chimney is unavoidable the following rules must be followed 1 The masonry chimney must be built and installed in accordance with nationally recognized building codes or standards and must be lined with app...

Page 16: ...ind from any direction will not create a positive pressure in the vicinity of the vent FIGURE 17 Home Layout L E D B V V V X V B V J X B B B V V F V C B X V I V G H A M K OPERABLE FIXED CLOSED VENT TERMINAL AIR SUPPLY AREA WHERE TERMINAL IS NOT PERMITTED FIXED CLOSED Canadian Installations1 US Installation2 A Clearance above grade veranda porch deck or balcony 12 inches 30 cm 12 inches 30 cm B Cle...

Page 17: ...o obtain proper air for combus tion and ventilation in confined spaces Combustion Air Source From Outdoors The blocking effects of louvers grilles and screens must be given con sideration in calculating free area If the free area of a specific louver or grille is not known refer to Table 10 to estimate free area Do not use less than 1 4 mesh Free area of louvers and grille varies widely the instal...

Page 18: ...vel of the appliance Refer to COMBUSTION AIR SOURCE FROM OUTDOORS and VENT AND SUPPLY AIR SAFETY CHECK in these instructions for additional information and safety check procedure 2 The duct shall be either metal or a material meeting the class 1 requirements of CAN4 S110 Standard for Air Ducts 3 The duct shall be least the same cross sectional area as the free area of the air supply inlet opening ...

Page 19: ...bustion air blower heat exchanger or a blocked vent pipe connection Corrective action is required These are manual reset controls that must be reset before operation can continue PRESSURE SWITCHES This furnace is supplied with two pressure switches which monitor the flow through the combustion air vent piping system This switches de energize the ignition control module and the gas valve if any of ...

Page 20: ... in w c 0 3 73 kPa in order to measure the gas line and the manifold pressures 4 You will need a 3 32 Allen wrench for the pressure port plugs in the gas valve 5 You will need 2 pieces of 1 8 0 3 cm ID flexible tubing that is 12 30 cm in length 2 pieces of 1 8 0 3 cm tubing that are 4 10 0 cm in length a 1 8 0 3 cm tee and a 1 8 0 3 cm adapter to connect the U tube manometer or the digital pressur...

Page 21: ...d at the gas meter times a barometric pressure and temperature correction factor of 0 960 times 3600 then divided by the time it took to measure 0 10 m3 of gas from the gas meter For Propane LP Gas multiply the Heat content of the gas MJ m3 or Default 93 15 times 0 10 m3 of gas measured at the gas meter times a baro metric pressure and temperature correction factor of 0 960 times 3600 then divided...

Page 22: ...th low and high have been calibrated at the factory Additional pressure adjustment should not be necessary If adjustment is necessary set to the following specifications After adjustment check for gas leakage 1 Refer to Figure 25 for location of pressure regulator adjustment cap and adjustment screws on main gas valve 2 Turn gas and electrical supplies on and follow the operating instructions to p...

Page 23: ...peed to the other Tap B is the humid profile This profile is best suited for installations where the humidity is frequently very high during cooling season such as in the southern part of the country On a call for cooling the blower will ramp up to 50 of full capacity and will stay there for two 2 min utes then will ramp up to 82 of full capacity and will stay there for five 5 minutes and then wil...

Page 24: ... pressure switch or miswiring 3 RED FLASHES This indicates the normally open pressure switch contact did not close after the inducer was energized This could be caused by a number of problems faulty inducer blocked vent pipe bro ken pressure switch hose or faulty pressure switch 4 RED FLASHES This indicates that a primary or auxiliary limit switch has opened its normally closed contacts With this ...

Page 25: ...ory the LED will flash two green flashes To clear the memory push the LAST ERROR button and hold it for more than five seconds The LED will flash three green flashes when the memory has been cleared then will resume the normal slow green flash after a five second pause FILTER PERFORMANCE The airflow capacity data published in Table 16 represents blower per formance WITHOUT filters To determine the...

Page 26: ... 47 5 30 9 47 5 30 9 1540 1001 1540 1001 C B 43 6 28 3 43 6 28 3 1440 936 1440 936 B C 40 8 26 5 40 8 26 5 1320 858 1320 858 D B 37 4 24 3 37 4 24 3 1400 910 1400 910 C A 39 6 25 8 39 6 25 8 1200 780 1200 780 D A 34 0 22 1 34 0 22 1 1260 819 1260 819 C C 35 7 23 2 35 7 23 2 1080 702 1080 702 D C 30 6 19 9 30 6 19 9 HIGH LOW HEAT CFM Input 57 000 1200 CFM Input 80 000 1200 CFM Jumper Settings Input...

Page 27: ...ystem static from 0 60 w c 150 Pa and divide this by 0 1 w c 25 Pa 0 68 170 Pa 0 60 150 Pa 0 08 20 Pa 0 08 20 Pa 0 1 25 Pa 0 8 Multiply this by 2 to obtain the percentage reduction in airflow 0 8 x 0 02 0 016 Multiply percentage reduction in airflow by the airflow in the table to obtain the airflow reduction 0 016 x 1400 39 6 m3 min 22 0 6 m3 min Subtract airflow reduction value from airflow in th...

Page 28: ...e Printed in U S A 271001 UIM A 0407 Copyright by York International Corp 2007 All rights reserved Supersedes 167187 UIM C 0806 Unitary 5005 Norman Product York OK Group Drive 73069 SECTION IX WIRING DIAGRAM FIGURE 28 Wiring Diagram ...

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