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Page 21

Installer’s Guide

Figure 22. 4YCY4 Field Wiring Diagram

C 757192i2

B
G

Y

W1
W2

R

COMMON

FAN

COMPRESSOR
HEAT FIRST STAGE

HEAT SECOND STAGE

24V

UNIT CONTROL BOX

GROUND
WIRE

3 PH
POWER
UNIT
NOTE 1

1 PH
POWER

B
G

Y

W1
W2

R

COMMON

FAN

COMPRESSOR
HEAT FIRST STAGE

HEAT SECOND STAGE

24V

B

G

Y

W1

W2

R

(GR)

(WH)

(WH)

(GR)

(WH)

(WH)

(GR)

(WH)

(WH)

Содержание 4YCY4024

Страница 1: ...inherent hazards during installation and service the electrical supply must be disconnected and the main gas valve must be turned off If operating checks must be performed with the unit operating it i...

Страница 2: ...ENING SYSTEM Failure to follow proper procedures can result in personal illness or injury or severe equipment damage RECONNECT ALL GROUNDING DEVICES All parts of this product that are capable of condu...

Страница 3: ...erwriters Laboratory An LP Gas conver sion kit is available Extreme mounting kits for slab and curbs are also available Packaged units are designed for outdoor mounting with a vertical condenser disch...

Страница 4: ...ep 2 Determine Unit Clearances Figure 1 4YCY4024 through 4YCY4036 1 of 3 Figures 1 through 6 show the unit critical dimensions NOTE The view labeled Bottom Side represents the Base as viewed looking u...

Страница 5: ...Page 5 Installer s Guide Figure 2 4YCY4024 through 4YCY4036 2 of 3...

Страница 6: ...Page 6 Installer s Guide Figure 3 4YCY4024 through 4YCY4036 3 of 3...

Страница 7: ...Page 7 Installer s Guide Figure 4 4YCY4042 through 4YCY4060 1 of 3 NOTE The view labeled Bottom Side represents the Base as viewed looking up from underneath the unit...

Страница 8: ...Page 8 Installer s Guide Figure 5 4YCY4042 through 4YCY4060 2 of 3...

Страница 9: ...Page 9 Installer s Guide Figure 6 4YCY4042 through 4YCY4060 3 of 3...

Страница 10: ...Refer to the Installation section for instruction on converting the supply and return airflow covers to down airflow 3 The field assembled Roof Mounting Curb BAYCURB050A or BAYCURB051A or a field fabr...

Страница 11: ...ce to combustible mate rial shall be maintained on air outlet duct 4 Attach the supply and return air ducts to the unit as explained Rooftop Installation Curb Mounting Convert Horizontal Airflow to Do...

Страница 12: ...he unit casing casing hardware corner lugs angles tabs or flanges Failure to observe these warnings may result in equipment damage 1 Before preparing the unit for lifting check the unit dimension draw...

Страница 13: ...For roof top applications using field fabricated ducts and sleeper rails rather than a curb or frame use the following procedure 1 Locateandsecurethesleeperrailstotheroof Three 3 sleeper rails are re...

Страница 14: ...drawing The manufacturer is not responsible for the unauthorized use of this drawing and expressly disclaims any liability for damages resulting from such unauthorized use Gasket Seal Spreader Bars B...

Страница 15: ...rizontal Airflow Application with Frame Supply Air Return Air Roof Flashing Channel Iron Center Support Center Sup port required on all Frame Applications Angle Iron Frame Roof Flashing Return Air Ang...

Страница 16: ...wo 2 feet from the unit to minimize noise and resistance To prevent leaking do not attach the ductwork to the bottom of the unit base refer to the bottom example in Figure 14 Condensate Drain Piping A...

Страница 17: ...SURE DROP OF 0 3 INCH W C AND 0 6 SP GR GAS IMPORTANT Before making the gas pipe connection give serious consideration to providing the clearance necessary to remove the accesspanelsontheunit e g econ...

Страница 18: ...cap or plug the line and test the pressure at the tapped shut off cock The pressure reading should not exceed 14 inches water column 5 Usinganappropriatebackupwrenchonthegasvalveinletboss connect the...

Страница 19: ...in the absence of local codes with the National Electrical Code ANSI NFPA 70 Latest Revision NOTE This unit is factory wired for 230V See wiring dia gram for 208V conversion NOTE For branch circuit w...

Страница 20: ...Switch Provide an approved weatherproof disconnect within close proxim ity to and within sight of the unit If disconnect must be mounted to the cabinet the location shown in Figure 21 should be the o...

Страница 21: ...757192i2 B G Y W1 W2 R COMMON FAN COMPRESSOR HEAT FIRST STAGE HEAT SECOND STAGE 24V UNIT CONTROL BOX GROUND WIRE 3 PH POWER UNIT NOTE 1 1 PH POWER B G Y W1 W2 R COMMON FAN COMPRESSOR HEAT FIRST STAGE...

Страница 22: ...Are all covers and access panels in place to prevent air loss and safety hazards NOTE Do not use the PRESSURE CURVES from the unit s SER VICE FACTS to determine the unit refrigerant charge The correc...

Страница 23: ...place and properly fastened Has the owner been instructed on the proper operation and maintenance of the unit Be sure to leave this manual with the owner Final Installation Checklist 1 Check to make s...

Страница 24: ...a 10 minute delay from the time of 1st stage ignition Comfort Control satisfied R and W1 W2 jumped contacts open signaling the control module to close the gas valve and de energize the induced draft b...

Страница 25: ...not store combustible materials gasoline or other flammable vapors or liquids near the unit WARNING Owner Maintenance Some of the periodic maintenance functions of the packaged unit can be performed b...

Страница 26: ...2 through 7 above Take care that all gaskets seat properly 12 Check all wires for correct installation by referring to the unit s electrical wiring diagram in the SERVICE FACTS 13 Leak test all gas li...

Страница 27: ...3 Flashes Pressure switch problem detected Fast Flash Rate Not used 4 Flashes High Limit switch protection device open Steady ON Normal No Call for Heat 5 Flashes Flame sensed and gas valve not energi...

Страница 28: ...com The AHRI Certified mark indicates company participation in the AHRI Certification program For verification of individual certified products go to ahridirectory org The manufacturer has a policy o...

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