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installation, start-up and
581B
service instructions
DuraPac Plus Series
SINGLE PACKAGE ROOFTOP Sizes 036-072
3 to 6 Tons
GAS HEATING/ELECTRIC COOLING UNITS
Cancels: II 581B-36-6 II 581B-36-7
10/1/05
WARNING: Before performing service or mainte-
nance operations on unit, turn off main power switch to
CONTENTS
unit. Electrical shock could cause personal injury.
Page
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . 1
INSTALLATION
INSTALLATION . . . . . . . . . . . . . . . .
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II. STEP 2 — FIELD FABRICATE DUCTWORK III. STEP 3 — DETERMINE LOCATION OF DRAIN LINE AND EXTERNAL TRAP On vertical units, secure all ducts to roof curb and building 3 structure. Do not connect ductwork to unit. For horizontal The unit’s / -in. condensate drain connections are located on 4 applications, field-supplied flanges should be attached to the bottom and end of the unit. Unit discharge connections do horizontal discharge openings and all ductwork secured to not determine the use of drain
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D ALT ROOF CURB A UNIT SIZE CONNECTOR ACCESSORY BC DRAIN GAS POWER CONTROL ACCESSORY PKG. ACCY. PWR HOLE 1′-2″ CRRFCURB001A01 3 CRBTMPWR001A01 3 / ″ [19] NPT 1 [356] / ″ 4 / ″ 4 2 581B036-072 [19] NPT 1 [12.7] CRBTMPWR002A01 1 / ″ [31.7] 2′-0″ 4 CRRFCURB002A01 11 3 1 [610] 1′-9 / ″ 1′-4″ 1 / ″ 1 / ″ 16 4 / ″ 2 2 3 CRBTMPWR003A01 / ″ [19] NPT 4 [551] [406] [44.5] [12.7] [12.7] NPT 1 / ″ 2 3 [12.7] / ″ NOTES: 4 1 CRBTMPWR004A01 1 /4″ [31.7] [19] NPT 1. Roof curb accessory is shipped disassembled.
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A. Positioning Maintain clearance around and above unit to provide mini- mum distance from combustible materials, proper airflow, and service access. See Fig. 7. Do not install unit in an indoor location. Do not locate unit air inlets near exhaust vents or other sources of contami- nated air. Be sure that unit is installed so that snow will not block the MAXIMUM ALLOWABLE combustion intake or flue outlet. DIFFERENCE (in.) Unit may be installed directly on wood flooring or on Class A-B B-C A-C A,
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NOTES: OPERATING 1. Place unit on curb as close as possible to the duct end. “A” “B” “C” UNIT WEIGHT 2. Dimension in ( ) is in millimeters. 581B 3. Hook rigging shackles through holes in base rail as shown in detail lb kg in. mm in. mm in. mm “A.” Holes in base rails are centered around the unit center of grav- 036 530 240 73.69 1872 35.50 902 33.31 847 ity. Use wooden top skid when rigging to prevent rigging straps 048 540 245 73.69 1872 35.50 902 33.31 847 from damaging unit. 4. Weights incl
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Table 1 — Physical Data — 581B036-072 UNIT SIZE 581B 036 048 060 072 NOMINAL CAPACITY 3 456 OPERATING WEIGHT (lb) Unit 530 540 560 635 EconoMi$er IV 50 50 50 50 Perfect Humidity™ Dehumidification System 15 23 23 29 Roof Curb 115 115 115 115 COMPRESSOR Scroll Quantity 1 111 Oil (oz) 42 53 50 60 REFRIGERANT TYPE R-22 Operating Charge (lb-oz) Standard Unit 5-8 10-2 10-0 12-8 Unit With Perfect Humidity Dehumidification System 9-0 15-8 17-0 21-0 CONDENSER FAN Propeller Quantity...Diameter (in.) 1...2
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Table 1 — Physical Data — 581B036-072 (cont) UNIT SIZE 581B 036 048 060 072 FURNACE SECTION Rollout Switch Cutout Temp (F)† 195 195 195 195 Burner Orifice Diameter (in. ...drill size)** Natural Gas — Std 071/072 .113...33 .113...33 .113...33 .113...33 114/115 .113...33 .113...33 .113...33 .113...33 149/150 — .129...30 .129...30 .129...30 060N .102...38 .102...38 .102...38 — 090N .102...38 .102...38 .102...38 — 120N — .116...32 .116...32 — Liquid Propane — Alt†† 071/072 .089...43 .089...43 .089..
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—8— Fig. 7 — Base Unit Dimensions — 581B036-072
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Refer to unit label diagram for additional information. Pig- tails are provided for field service. Use factory-supplied splices or UL (Underwriters’ Laboratories) approved copper connector. When installing units, provide a disconnect per NEC. All field wiring must comply with NEC and local require- ments. In Canada, electrical connections must be in accor- dance with CSA (Canadian Standards Association) C22.1 Canadian Electrical Code Part One. Install conduit through side panel openings indicate
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LEGEND LEGEND C— Contactor C— Contactor COMP — Compressors COMPS — Compressors EQUIP — Equipment EQUIP — Equipment GND — Ground GND — Ground IFC — Indoor (Evaporator) IFC — Indoor (Evaporator) Fan Contactor Fan Contactor NEC — National Electrical Code NEC — National Electrical Code TB — Terminal Block TB — Terminal Block Fig. 10 — Power Wiring Connections BRYANT ELECTRONIC THERMOSTAT R COOL STAGE 1 Y1/W2 RACEWAY LOW VOLTAGE INTEGRATED GAS UNIT G FAN G CONNECTIONS
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Table 2A — Electrical Data — Standard Motor Units Without Electrical Convenience Outlet VOLTAGE COMPRESSOR OFM COMBUSTION POWER MINIMUM UNIT IFM UNIT NOMINAL VOLTAGE RANGE (each) (each) FAN MOTOR SUPPLY* DISCONNECT SIZE† 581B (V-Ph-Hz) Min Max Qty RLA LRA FLA FLA FLA MCA MOCP** FLA LRA 208/230-1-60 187 254 16.0 88.0 0.7 4.9 .60 25.6/25.6 30/30 25/25 101/101 208/230-3-60 187 254 10.3 77.0 0.7 4.9 .60 18.5/18.5 25/25 18/18 90/90 036 1 (3 Tons) 460-3-60 414 508 5.1 39.0 0.4 2.2 .30 9.0 20 9 46 575-
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Table 2C — Electrical Data — High-Static Motor Units Without Electrical Convenience Outlet MINIMUM UNIT VOLTAGE COMPRESSOR OFM COMBUSTION POWER NOMINAL IFM DISCONNECT UNIT RANGE (each) (each) FAN MOTOR SUPPLY* VOLTAGE SIZE† 581B (V-Ph-Hz) Min Max Qty RLA LRA FLA FLA RLA MCA MOCP** FLA LRA 208/230-3-60 187 254 10.3 77.0 0.7 5.8 0.6 19.4 25 19 120 036 460-3-60 414 508 1 5.1 39.0 0.4 2.6 0.3 9.4 20 9 60 575-3-60 518 632 4.2 31.0 0.4 2.6 0.3 7.7 20 8 48 208/230-3-60 187 254 13.5 93.0 0.7 5.8 0.6 23.
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VIII. STEP 8 — ADJUST FACTORY-INSTALLED OPTIONS A. Disconnect Switch The optional disconnect switch is non-fused. The switch has the capability of being locked in place for safety purposes. B. Perfect Humidity™ Dehumidification System Perfect Humidity system operation can be controlled by field installation of a Bryant-approved humidistat device (Fig. 13), or light commercial Thermidistat™ device (Fig. 14). To install the humidistat device: 1. Route humidistat cable through hole provided in unit
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LCT ROOF TOP UNIT R R C C Y1 Y1 Y2 Y2 G G W1 W1 W2 W2 CB R1 DEHUM 3.2 AMPS OC PINK RED T STAT WIRES 24 V R1 LTLO PINK PINK FROM PERFECT HUMIDITY LEGEND SYSTEM LLSV CB — Circuit Breaker LCT — Light Commercial Thermidistat™ Device LLSV — Liquid Line Solenoid Valve LTLO — Low Temperature Lockout PERFECT HUMIDITY SYSTEM Fig. 16 — Typical Rooftop Unit with Perfect Humidity™ Dehumidification System with Thermidistat Device C. Convenience Outlet An optional convenience outlet provides power for rooft
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ECONOMI$ER IV CONTROLLER OUTSIDE AIR WIRING TEMPERATURE SENSOR HARNESS LOW AMBIENT SENSOR ACTUATOR Fig. 19 — Optional Manual Outdoor-Air Damper Fig. 21 — EconoMi$er IV Component Locations with Hood Attached FILTER ACCESS PANEL COMPRESSOR ACCESS PANEL OUTDOOR-AIR OPENING AND INDOOR COIL ACCESS PANEL Fig. 22 — Typical Access Panel Locations Fig. 20 — Outdoor-Air Damper Position Setting E. Optional EconoMi$er IV HOOD BOX See Fig. 21 for EconoMi$er IV component locations. BRACKET NOTE: These instru
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IMPORTANT: If the power exhaust accessory is to be 17 1/4” installed on the unit, the hood shipped with the unit will not be used and must be discarded. Save the aluminum filter for use in the power exhaust hood assembly. 3. The indoor coil access panel will be used as the top of the hood. Remove the screws along the sides and bot- tom of the indoor coil access panel. See Fig. 24. 4. Swing out indoor coil access panel and insert the hood sides under the panel (hood top). Use the screws DIVIDER p
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FOR OCCUPANCY CONTROL REPLACE JUMPER WITH FIELD-SUPPLIED TIME CLOCK LEGEND Potentiometer Defaults Settings: NOTES: Power Exhaust Middle 1. 620 ohm, 1 watt 5% resistor should be removed only when using differential DCV— Demand Controlled Ventilation Minimum Pos. Fully Closed enthalpy or dry bulb. IAQ — Indoor Air Quality DCV Max. Middle 2. If a separate field-supplied 24 v transformer is used for the IAQ sensor power LA — Low Ambient Lockout Device DCV Set Middle supply, it cannot have the second
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Table 3 — Supply Air Sensor Table 4 — EconoMi$er IV Sensor Usage Temperature/Resistance Values ECONOMI$ER IV WITH OUTDOOR AIR DRY BULB SENSOR APPLICATION TEMPERATURE (F) RESISTANCE (ohms) Accessories Required –58 200,250 Outdoor Air None. The outdoor air dry bulb sensor –40 100,680 Dry Bulb is factory installed. –22 53,010 Differential CRTEMPSN002A00* –4 29,091 Dry Bulb 14 16,590 Single Enthalpy HH57AC078 32 9,795 HH57AC078 Differential 50 5,970 and Enthalpy CRENTDIF004A00* 68 3,747 CO2 for DCV
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Exhaust Set Point Adjustment ECONOMI$ER IV CONTROLLER The exhaust set point will determine when the exhaust fan runs based on damper position (if accessory power exhaust is ECONOMI$ER IV installed). The set point is modified with the Exhaust Fan Set Point (EXH SET) potentiometer. See Fig. 32. The set point represents the damper position above which the exhaust fans will be turned on. When there is a call for exhaust, the EconoMi$er IV controller provides a 45 ± 15 second delay before exhaust fan
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85 90 95 100 105 110 (29) (32) (35) (38) (41) (43) CONTROL CONTROL POINT CURVE APPROX. °F (°C) 80 AT 50% RH (27) A 73 (23) B 70 (21) C 67 (19) D 63 (17) 75 (24) 70 (21) 65 (18) 60 (16) A 55 (13) B 50 C (10) 45 D (7) 40 (4) 35 (2) A B C D HIGH LIMIT CURVE 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 (2) (4) (7) (10) (13) (16) (18) (21) (24) (27) (29) (32) (35) (38) (41) (43) APPROXIMATE DRY BULB TEMPERATURE— °F (°C) Fig. 35 — Enthalpy Changeover Set Points CO SENSOR MAX RANGE SETTING 2 TR
