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581B036--072
581C024--060
SINGLE--PACKAGE ROOFTOP HEATING/COOLING
STANDARD AND LOW NOx UNITS
Installation Instructions
TABLE OF CONTENTS literature, tags and labels attached to the unit, and other safety
precautionsthat may apply.
Page
Followallsafetycodes.Wearsafetyglassesandwork gloves.Use
SAFETY CONSIDERATIONS ........................ 1
quenchingclothforunbrazing operations.Havefireextinguishers
INSTALLATION .................................. 1
availableforallbrazing operations.
Step1--Provid
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A minimum clearance is not required around ductwork. Cabinet return-air static pressure (a negative condition) shall not exceed 0.35 in.wg with economizeror0.45 in.wg withouteconomizer. These units are designed for a minimum continuous return-air temperature in heating of 50_F (dry bulb), or an intermittent operation down to 45_F (dry bulb), such as when used with a night setback thermostat. To operate at lower return-air temperatures, a field-supplied outdoor air temperature control must be use
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DALT ROOF CURB UNIT CONNECTOR ACCESSORY A BC DRAIN GAS POWER CONTROL ACCESSORY SIZE PKG. ACCY. POWER HOLE 1 -2 CRRFCURB001A01 3 3 CRBTMPWR001A01 / [19] NPT / 4 [356] 4 581B036-072 [19] NPT 1 CRBTMPWR002A01 1 / [31.7] 4 2 -0 581C024-060 CRRFCURB002A01 11 3 1 1 1 -9 / 1 -4 1 / 1 / / 16 4 / 2 2 [610] 2 3 CRBTMPWR003A01 / [19] NPT 4 [551] [406] [44.5] [12.7] [12.7] [12.7] NPT 3 /4 1 NOTES: CRBTMPWR004A01 1 / [31.7] 4 [19] NPT 1. Roof curb accessory is shipped disassembled. 2. Insulated panels. 3
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MAXIMUM ALLOWABLE DIFFERENCE (in.) CONDENSATE PAN (SIDE VIEW) A-B B-C A-C HORIZONTAL 0.5 1.0 1.0 DRAIN PLUG DRAIN OUTLET NOTE: Drain plug is shown in factory-installed position. C06003 Fig.4 --- CondensateDrainPan C06110 Fig.3 --- UnitLeveling Tolerances Be sure that unit is installed such that snow will not block the combustion intakeor flueoutlet. Unit maybeinstalleddirectly onwood flooringor onClassA,B, orC roof-covering materialwhen roofcurb isused. Although unit is weatherproof, guard again
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NOTES: 1. Place unit on curbasclose aspossible to the duct end. 2. Dimensionin( )isinmillimeters. 3. Hookriggingshacklesthrough holesin base rail asshown in detail “A.”Holesin base railsare centeredaroundthe unitcenter of gravity.Use wooden topskid when riggingto preventriggingstrapsfromdamagingunit. 4. Weightsinclude base unitwithouteconomizer.See Table 1for unitoperatingweightswith accessory economizer. 5. Weightsinclude base unitwithoutthe PerfectHumidityt adaptive dehumidification system. Se
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6 581B,C COMPRESSOR ACCESS PANEL CONTROL BOX C06363 Fig.8 --- 581B036--072BaseUnitDimensions
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7 C06364 Fig.9 --- 581C024--060BaseUnitDimensions 581B,C COMPRESSOR ACCESS PANEL
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FieldPowerSupply Allunitsexcept 208/230-v units arefactory wired for thevoltage shown on thenameplate. Ifthe 208/230-v unit isto beconnected to a 208-v power supply, the transformer must be rewired by moving the black wire from the 230-v terminal on the transformer and connecting it to the 200-v terminal from the transformer. Refer to unit label diagram for additional information. Pigtails are provided for field service. Use factory-supplied splices orUL (Underwriters’Laboratories)approved coppe
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Table1—PhysicalData581B BASEUNIT581B 036 048 060 072 NOMINAL CAPACITY(tons) 3 4 5 6 OPERATING WEIGHT(lb) Unit 530 540 560 635 Perfect Humidity™ Adaptive Dehumidification System 15 23 25 29 EconoMi$er IV 50 50 50 50 Roof Curb 115 115 115 115 COMPRESSOR Scroll Quantity 1 1 1 1 Oil (oz) 42 53 50 60 REFRIGERANTTYPE R-22 Expansion Device Acutrol™ MeteringDevice Operating Charge (lb-oz) StandardUnit 5-8 10-2 10-0 12- 8 Unit With Perfect Humidity Adaptive Dehumidification System 12-5 18-8 20-5 23-14 CO
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Table1—PhysicalData581B(cont) UNITSIZE581B 036 048 060 072 FURNACESECTION RolloutSwitch CutoutTemp(F)† 195 195 195 195 Burner Orifice Diameter (in. ...drill size)** Natural Gas—Std 071/072 .113...33 .113...33 .113...33 .113...33 114/115 .113...33 .113...33 .113...33 .113...33 149/150 — .129...30 .129...30 .129...30 060N .102...38 .102...38 .102...38 — 090N .102...38 .102...38 .102...38 — 120N — .116...32 .116...32 — Propane —Alt†† 071/072 .089...43 .089...43 .089...43 .089...43 114115 .089...43
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Table2—PhysicalData581C BASEUNIT581C 024 036 048 072 NOMINAL CAPACITY(tons) 2 3 4 5 OPERATING WEIGHT(lb) Unit 530 540 560 635 Perfect Humidity™ Adaptive Dehumidification System 13 15 23 25 EconoMi$er IV 50 50 50 50 Roof Curb 115 115 115 115 COMPRESSOR Scroll Quantity 1 1 1 1 Oil (oz) 25 42 56 53 REFRIGERANTTYPE R-22 Expansion Device Acutrol™ MeteringDevice Operating Charge (lb-oz) StandardUnit 5---3 7---11 8---8 12---11 Unit With Perfect Humidity Adaptive Dehumidification System 10---2 14---0 14
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Table2—PhysicalData581C(cont) UNITSIZE581C 024 036 048 060 FURNACESECTION RolloutSwitch CutoutTemp(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 — Propane —Alt†† 071/072 .089...43 .089...43 .089...43 .089...43 114115 .089...43
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TO COMP BLK BLK TO COMP BLK 11 23 11 23 YEL BLU 11 23 YEL YEL BLU C C C 21 23 21 23 21 23 EQUIP GND FIELD POWER SUPPLY DISCONNECT 575-3-60 FIELD POWER SUPPLY PER NEC FIELD POWER SUPPLY (SIZES 581B036,048 208/230-3-60 581C036,048) DISCONNECT DISCONNECT 208/230-1-60 480-3-60 PER NEC PER NEC (SIZES 581B036-060, (SIZES 581B036,048 581C024-060) 581C036,048) TO COMP BLK BLK TO TB2 11 23 11 13 YEL YEL BLU C C BLU 21 23 21 23 14 IFC 3 6 FIELD POWER SUPPLY DISCONNECT 575-3-60 PER NEC FIELD POWER SUPPLY (
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14 581B,C Table3—ElectricalData581C VOLTAGE COMBUSTION CONV MINIMUMUNIT COMPRESSOR OFM 581C024---060 POWERSUPPLY* RANGE FANMOTOR IIFM FM OUTLET DISCONNECTSIZE NOMINAL FLA UNITSIZE IFMTYPE Min Max QTY RLA LRA QTY FLA FLA MCA FLA LRA MOCP** V---PH---Hz 024 024 NO 16.3 20 15.6 69 2 20 08 8//2 23 30 0--- ---1 1--- ---6 60 0 S ST TD D 1 18 87 7 2 25 54 4 1 1 1 10 0.9 9 6 63 3 1 1 0 0.7 7 0 0.6 6 2 2.0 0 (2tons) YES 22.3 25 21.2 73 NO 25.6 30 24.8 101 208 208//2 23 30 0------1 1------6 60 0 S STD TD 1
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15 Table4—ElectricalData581B VOLTAGE COMBUSTION IFM CONV MINIMUMUNI 581B036---072 COMPRESSOR(each) OFM(each) POWERSUPPLY* RANGE FANMOTOR FLA OUTLET DISCONNECTSIZE NOMINAL UNITSIZE IFMTYPE Min Max QTY RLA LRA QTY FLA FLA MCA FLA LRA MOCP** V---PH---Hz NO 25.6 30 25 101 2 208 08//2 23 30 0------1 1------6 60 0 S STD TD 1 187 87 254 254 1 1 1 16 6 88 88 1 1 0 0.7 7 0 0.6 6 4 4.9 9 YES 31.6 35 30 106 NO 18.5 25 18 90 S STD TD 4 4.9 9 YES 24.5 30 24 95 208 208//230 230------3 36 60 0 187 187 254 254
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To install Thermidistat device: Step8—AdjustFactory--InstalledOptions 1. Route Thermidistat cable through hole provided in unit PerfectHumidity™AdaptiveDehumidification controlbox. System 2. Some models may be equipped with a raceway built into Perfect Humidity system operation can be controlled by field thecorner postlocated on the leftside ofcontrol box (See installation ofaBryant--approved humidistat. (SeeFig.15.) Fig. 14). This raceway provides the required clearance NOTE: A light commercial
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LEGEND CB — Circuit Breaker Terminal (Unmarked) CR — Cooling Relay DHR — Dehumidify Relay Splice DSV — Discharge Solenoid Valve HR — Heater Relay Factory Wiring LPS — Low Pressure Switch Field Control Wiring LSV — Liquid Solenoid Valve LTLO — Low Temperature Lockout Field Power Wiring Field Splice C06128 Fig.17 --- TypicalPerfectHumidityt AdaptiveDehumidification System HumidistatWiring(208/230--VUnitShown) 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 2
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OptionalEconomi$erIV SeeFig.23 forEconoMi$erIV componentlocations. NOTE: These instructions are for installing the optional EconoMi$er IV. Refer to the accessory EconoMi$er IV when field installing an EconoMi$erIV accessory. 1. To remove the existing unit filter access panel, raise the panel and swing the bottom outward. The panel is now disengaged from the track and can be removed. (See Fig.24.) 2. Theboxwith theeconomizerhoodcomponentsisshipped in the compartment behind the economizer. The Eco
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SupplyAirTemperature(SAT)Sensor The supply air temperature sensor is a 3k ohm thermistorlocated at the inlet of theindoor fan.(See Fig.34.) Thissensor isfactory installed. The operating range of temperature measurement is 0° to 158_F. SeeTable5 for sensor temperature/resistancevalues. HOOD BOX BRACKET Table5—SupplyAirSensorTemperature/ ResistanceValues TEMPERATURE(F) RESISTANCE(ohms) –58 200,250 –40 100,680 –22 53,010 –4 29,091 14 16,590 32 9,795 C06024 50 5,970 Fig.25 --- HoodBoxRemoval 68 3,74
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Economi$erIVControlModes DifferentialDryBulbControl Determine the EconoMi$er IV control mode before set up of the For differential dry bulb control the standard outdoor dry bulb control. Some modes of operation may require different sensor is used in conjunction with an additional accessory dry sensors. (See Table 6.) The EconoMi$er IV is supplied from the bulb sensor (part number CRTEMPSN002A00). The accessory factory with a supply--air temperature sensor and an outdoor-- air sensor must be mou
