P01 - 40RU-Carrier Air Handling Units.pdf

40RU

Packaged Air---Handling Units 60 Hz With PuronR (R---410A) Refrigerant Sizes 07, 08, 12, 14, 16

Installation, Start---Up and Service Instructions

TABLE OF CONTENTS

SAFETY CONSIDERATIONS 1

PRE--INSTALLATION 2

Moving and Storage 2

Rigging 2

INSTALLATION 2–22

General 2

Uncrating 2

Accessories 2

Unit Positioning 12

Unit Isolation 13

Refrigerant and Chilled Water Piping Access 13

Refrigerant Piping 13

Chilled Water Piping 17

Condensate Drain 18

Fan Motors and Drives 18

Power Supply and Wiring 19

Connecting Ductwork 22

Return--Air Filters 22

START--UP 23

SERVICE 23–36

Panels 23

Fan Motor Lubrication 23

Fan Shaft Bearings 23

Centering Fan Wheel 24

Fan Shaft Position Adjustment 24

Individual Fan Wheel Adjustment 24

Fan Belts 24

Fan Rotation 24

Fan Pulley Alignment 25

Pulley and Drive Adjustment 25

Condensate Drains 25

Return--Air Filters 25

Chilled Water Coil Freeze Protection 25

Coil Removal 25

Cleaning Cooling Coil 25

Cleaning Insulation 25

Replacing Filters 26

START--UP CHECKLIST 39--40

SAFETY CONSIDERATIONS

Improper installation, adjustment, alteration, service, maintenance, or use can cause explosion, fire, electrical shock or other conditions which may cause personal injury or property damage. Consult a qualified installer, service agency, or your distributor or branch for information or assistance. The qualified installer or agency must use factory--authorized kits or accessories when modifying this product. Refer to the individual instructions package

Follow all safety codes. Wear safety glasses and work gloves. Use quenching cloths for brazing operations and have a fire extinguisher available. Read these instructions thoroughly and follow all warnings or cautions attached to the unit. Consult local building codes and appropriate national electrical codes (in USA, ANSI/NFPA70, National Electrical Code (NEC); in Canada, CSA C22.1) for special requirements.

It is important to recognize safety information. This is the safety--alert symbol . When you see this symbol on the unit and in instructions or manuals, be alert to the potential for personal injury.

Understand the signal words DANGER, WARNING, CAUTION, and NOTE. These words are used with the safety--alert symbol. DANGER identifies the most serious hazards which will result in severe personal injury or death. WARNING signifies hazards which could result in personal injury or death. CAUTION is used to identify unsafe practices, which may result in minor personal injury or product and property damage. NOTE is used to highlight suggestions which will result in enhanced installation, reliability, or operation.

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could cause in personal injury or death.

Before performing service or maintenance operations on unit, always turn off main power switch to unit and install lockout tag. Unit may have more than one power switch.

! WARNING

UNIT OPERATION AND SAFETY HAZARD

Failure to follow this warning could cause in personal injury,death and/or equipment damage.

PuronR (R--410A) refrigerant systems operate at higher pressures than standard R--22 systems. Do not use R--22 service equipment or components on Puron refrigerant equipment.

! WARNING

PERSONAL INJURY AND ENVIRONMENTAL

HAZARD

Failure to follow this warning could cause in personal injury or death.

Relieve pressure and recover all refrigerant before system repair or final unit disposal.

Wear safety glasses and gloves when handling refrigerants. Keep torches and other ignition sources away from refrigerants and oils.

! WARNING

CUT HAZARD

Failure to follow this caution may result in personal injury.

Sheet metal parts may have sharp edges or burrs. Use care and wear appropriate protective clothing, safety glasses and gloves when handling parts and servicing 40RU units.

CAUTION!

UNIT OPERATION HAZARD

Failure to follow this caution could cause equipment damage.

Ensure voltage listed on unit data plate agrees with electrical supply provided for the unit.

CAUTION!

PRE--INSTALLATION

1. The power supply (v, ph, and Hz) must correspond to that specified on unit rating plate.

2. The electrical supply provided by the utility must be sufficient to handle load imposed by this unit.

3. Refer to Installation, General section (page 2) and

Fig. 1 and Fig. 2 for locations of electrical inlets, con-densate drain, duct connections, and required clear-ances before setting unit in place.

4. This installation must conform with local building codes and with the NEC (National Electrical Code) or ANSI (American National Standards Institute)/NFPA (National Fire Protection Association) latest revision.

Refer to provincial and local plumbing or wastewater codes and other applicable local codes.

Moving and Storage -- To transfer unit from truck to storage site, use a fork truck. Do not stack units more than 2 high during storage. If unit is to be stored for more than 2 weeks before installation, choose a level, dry storage site free from vibration. Do not remove plastic wrap or skid from unit until final installation.

Rigging -- All 40RU Series units can be rigged by using the shipping skid. Units are shipped fully assembled. Do not remove shipping skids or protective covering until unit is ready for final placement; damage to bottom panels can result. Use slings and spreader bars as applicable to lift unit.

INSTALLATION

General -- Allow the following clearances for service access and airflow:

S Rear: 3 ft (914 mm) [21/2 ft (762 mm) with electric heat accessory]

S Front: 21/2 ft (762 mm)

S Right Side: 31/2 ft (1067 mm)

S Left Side: 21/2 ft (762 mm)

For units equipped with an economizer, refer to the accessory installation instructions for additional clearance requirements. Be sure floor, wall, or ceiling can support unit weight (Tables 1A – 1F). See Fig. 1 and Fig. 2 for dimensions.

Uncrating -- Move unit as near as possible to final location before removing shipping skid.

Remove metal banding, top skid, and plastic wrap.

Examine unit for shipping damage. If shipping damage is evident, file claim with transportation agency. Remove base skid just prior to actual installation.

Check nameplate information against available power supply and model number description in Fig. 3.

NOTE: Be sure to remove the styrofoam shipping pad from the thermostatic expansion valve (TXV). Verify that it has been removed. See Fig. 5.

Accessories -- Refer to instructions shipped with each accessory for specific information.

R U

Table 1A — 40RUA Physical Data, English — Cooling Units

UNIT 40RUA* 07 08 12 14 16

NOMINAL CAPACITY (Tons) 6 71/2 10 121/2 15

OPERATING WEIGHT (lb) Base Unit with TXV 381 385 405 670 685 Plenum 175 175 175 225 225

FANS

Qty...Diam. (in.) 1...15 1...15 1...15 2...15 2...15 Nominal Airflow (cfm) 2400 3000 4000 5000 6000 Airflow Range (cfm) 1800---3000 2250---3750 3000---5000 3750---6250 4500---7500 Nominal Motor Hp (Standard Motor) 208/230---1---60 1.3 2.4 — — — 208/230---3---60 and 460---3---60 2.4 2.4 2.4 2.9 3.7 575---3---60 1.0 2.0 2.0 3.0 3.0 Motor Speed (rpm) 208/230---1---60 1725 1725 — — — 208/230---3---60 and 460---3---60 1725 1725 1725 1725 1725 575---3---60 1725 1725 1725 1725 1725

REFRIGERANT R---410A

Operating charge (lb) (approx per circuit){ 3.0 3.0 1.5/1.5 2.0/2.0 2.5/2.5

DIRECT---EXPANSION COIL Enhanced Copper Tubes, Aluminum Sine---Wave Fins Max Working Pressure (psig) 650 Face Area (sq ft) 6.67 8.33 10.0 13.25 17.67 No. of Splits 1 1 2 2 2 No. of Circuits per Split 12 15 9 12 16 Split Type...Percentage — — Face...50/50 Rows...Fins/in. 4...15 4...15 4...15 4...15 4...15

PIPING CONNECTIONS,

Quantity...Size (in.)

DX Coil — Suction (ODF) 1...11/8 1...11/8 2...11/8 2...11/8 2...11/8 DX Coil — Liquid Refrigerant (ODF) 1...5/8 2...5/8 Steam Coil, In (MPT) 1...21/2 1...21/2 Steam Coil, Out (MPT) 1...11/2 1..11/2 Hot Water Coil, In (MPT) 1...11/2 1...2 Hot Water Coil, Out (MPT) 1...11/2 1...2 Condensate (PVC) 1...11/4 ODM/1 IDF

FILTERS Throwaway — Factory Supplied

Quantity...Size (in.) 4...16 x 24 x 2 4...16 x 20 x 2 4...16 x 24 x 2

Access Location Either Side

STEAM COIL}

Max Working Pressure (psig at 260° F) 20 Total Face Area (sq ft) 6.67 6.67 6.67 13.33 13.33 Rows...Fins/in. 1...9 1...9 1...9 1...10 1...10

HOT WATER COIL}

Max Working Pressure (psig) 150 Total Face Area (sq ft) 6.67 6.67 6.67 13.33 13.33 Rows...Fins/in. 2...8.5 2...8.5 2...8.5 2...8.5 2...8.5 Water Volume (gal) 8.3 13.9 (ft3) 1.1 1.85

LEGEND

DX — Direct Expansion TXV— Thermostatic Expansion Valve { Units are shipped without refrigerant charge.

} Field installed accessory only.

Table 1B — 40RUA Physical Data, SI — Cooling Units

UNIT 40RUA* 07 08 12 14 16

NOMINAL CAPACITY (kW) 21 26 35 43 52

OPERATING WEIGHT (kg) Base Unit with TXV 173 175 184 304 311 Plenum 80 80 80 102 102

FANS

Qty...Diam. (mm) 1...381 1...381 1...381 2...381 2...381 Nominal Airflow (L/s) 1133 1604 1888 2360 2831 Airflow Range (L/s) 850---1416 1203---2006 1416---2360 1770---2949 2124---3539 Nominal Motor kW (Standard Motor) 208/230---1---60 0.97 1.79 — — — 208/230---3---60 and 460---3---60 1.79 1.79 1.79 2.16 2.16 575---3---60 0.75 1.49 1.49 2.24 2.24 Motor Speed (r/s) 208/230---1---60 28.8 28.8 — — — 208/230---3---60 and 460---3---60 28.8 28.8 28.8 28.8 28.8 575---3---60 28.8 28.8 28.8 28.8 28.8

REFRIGERANT R---410A

Operating charge (kg) (approx per circuit){ 1.36 1.36 0.68/0.68 0.90/0.90 1.13/1.13

DIRECT---EXPANSION COIL Enhanced Copper Tubes, Aluminum Sine---Wave Fins Max Working Pressure (kPag) 4481 Face Area (sq m) 0.62 0.77 0.93 0.93 1.64 No. of Splits 1 1 2 2 2 No. of Circuits per Split 12 15 9 12 16 Split Type...Percentage — — Face...50/50 Rows...Fins/m 4...591 4...591 4...591 4...591 4...591

PIPING CONNECTIONS,

Quantity...Size (in.)

DX Coil — Suction (ODF) 1...11/8 1...11/8 2...11/8 2...11/8 2...11/8 DX Coil — Liquid Refrigerant (ODF) 1...5/8 2...5/8 Steam Coil, In (MPT) 1...21/2 1...21/2 Steam Coil, Out (MPT) 1...11/2 1..11/2 Hot Water Coil, In (MPT) 1...11/2 1...2 Hot Water Coil, Out (MPT) 1...11/2 1...2 Condensate (PVC) 1...11/4 ODM/1 IDF

FILTERS Throwaway — Factory Supplied

Quantity...Size (mm) 4...406 x 610 x 51 4...406 x 508 x 51 4...406 x 610 x 51

Access Location Either Side

STEAM COIL}

Max Working Pressure (kPag at 126°C) 138 Total Face Area (sq m) 0.62 0.62 0.62 1.24 1.24 Rows...Fins/m 1...355 1...355 1...355 1...394 1...394

HOT WATER COIL}

Max Working Pressure (kPag) 1034 Total Face Area (sq m) 0.62 0.62 0.62 1.24 1.24 Rows...Fins/m 2...335 2...335 2...335 2...335 2...335 Water Volume

(L) 31.4 52.6 (m3) 0.031 0.052

LEGEND

DX — Direct Expansion TXV— Thermostatic Expansion Valve { Units are shipped without refrigerant charge.

} Field installed accessory only.

Table 1C — 40RUQ Physical Data, English — Heat Pump Units

UNIT 40RUQ* 07 08 12 16

NOMINAL CAPACITY (Tons) 6 71/2 10 15

OPERATING WEIGHT (lb) Base Unit with TXV 385 385 427 713 Plenum 175 175 175 225

FANS

Qty...Diam. (in.) 1...15 1...15 1...15 2...15 Nominal Airflow (cfm) 2400 3000 4000 6000 Airflow Range (cfm) 1800---3000 2250---3750 3000---5000 4500---7500 Nominal Motor Hp (Standard Motor) 208/230---1---60 1.3 2.4 — — 208/230---3---60 and 460---3---60 2.4 2.4 2.4 3.7 575---3---60 1.0 2.0 2.0 3.0 Motor Speed (rpm) 208/230---1---60 1725 1725 — — 208/230---3---60 and 460---3---60 1725 1725 1725 1725 575---3---60 1725 1725 1725 1725

REFRIGERANT R---410A

Operating charge (lb) (approx per circuit){ 3.0 3.0 2.0/2.0 3.0/3.0

DIRECT---EXPANSION COIL Enhanced Copper Tubes, Aluminum Sine---Wave Fins Max Working Pressure (psig) 650 Face Area (sq ft) 8.33 8.33 10.0 16.56 No. of Splits 1 1 2 2 No. of Circuits per Split 15 12 9 10 Split Type...Percentage — — Face...50/50 Face...50/50 Rows...Fins/in. 3...15 4...15 4...15 4...15

PIPING CONNECTIONS,

Quantity...Size (in.)

DX Coil — Suction (ODF) 1...11/8 1...11/8 2...11/8 2...11/8 DX Coil — Liquid Refrigerant (ODF) 1...5/8 1...5/8 2...5/8 2...5/8 Steam Coil, In (MPT) 1...21/2 1...21/2 1...21/2 1...21/2 Steam Coil, Out (MPT) 1...11/2 1...11/2 1...11/2 1...11/2 Hot Water Coil, In (MPT) 1...11/2 1...11/2 1...11/2 1...2 Hot Water Coil, Out (MPT) 1...11/2 1...11/2 1...11/2 1...2 Condensate (PVC) 1...11/4 ODM/1 IDF

FILTERS Throwaway — Factory Supplied Quantity...Size (in.) 4...16 x 24 x 2 4...16 x 20 x 2

4...16 x 24 x 2 Access Location Either Side

STEAM COIL}

Max Working Pressure (psig at 260° F) 20 Total Face Area (sq ft) 6.67 6.67 6.67 13.33 Rows...Fins/in. 1...9 1...9 1...9 1...10

HOT WATER COIL}

Max Working Pressure (psig) 150 Total Face Area (sq ft) 6.67 6.67 6.67 13.33 Rows...Fins/in. 2...8.5 2...8.5 2...8.5 2...8.5 Water Volume (gal) 8.3 13.9 (ft3) 1.1 1.85

LEGEND

DX — Direct Expansion TXV— Thermostatic Expansion Valve { Units are shipped without refrigerant charge.

} Field installed accessory only.

Table 1D — 40RUQ Physical Data, SI — Heat Pump Units

UNIT 40RUQ* 07 08 12 16

NOMINAL CAPACITY (kW) 21 26 35 52

OPERATING WEIGHT (kg) Base Unit with TXV 175 175 194 323 Plenum 80 80 80 102

FANS

Qty...Diam. (mm) 1...381 1...381 1...381 2...381 Nominal Airflow (L/s) 1133 1604 1888 2831 Airflow Range (L/s) 850---1416 1203---2006 1416---2360 2124---3539 Nominal Motor kW (Standard Motor) 208/230---1---60 0.97 1.79 — — 208/230---3---60 and 460---3---60 1.79 1.79 1.79 2.76 575---3---60 0.75 1.49 1.49 2.24 Motor Speed (r/s) 208/230---1---60 28.8 28.8 — — 208/230---3---60 and 460---3---60 28.8 28.8 28.8 28.8 575---3---60 28.8 28.8 28.8 28.8

REFRIGERANT R---410A

Operating charge (kg) (approx per circuit){ 1.36 1.36 0.91/0.91 1.36/1.36

DIRECT---EXPANSION COIL Enhanced Copper Tubes, Aluminum Sine---Wave Fins Max Working Pressure (kPag) 4482 Face Area (sq m) 0.77 0.77 0.93 1.54 No. of Splits 1 1 2 2 No. of Circuits per Split 12 12 9 10 Split Type...Percentage — — Face...50/50 Face...50/50 Rows...Fins/m 3...591 3...591 3...591 4...591

PIPING CONNECTIONS,

Quantity...Size (in.)

DX Coil — Suction (ODF) 1...11/8 1...11/8 2...11/8 2...11/8 DX Coil — Liquid Refrigerant (ODF) 1...5/8 1...5/8 2...5/8 2...5/8 Steam Coil, In (MPT) 1...21/2 1...21/2 1...21/2 1...21/2 Steam Coil, Out (MPT) 1...11/2 1...11/2 1...11/2 1...11/2 Hot Water Coil, In (MPT) 1...11/2 1...11/2 1...11/2 1...2 Hot Water Coil, Out (MPT) 1...11/2 1...11/2 1...11/2 1...2 Condensate (PVC) 1...11/4 ODM/1 IDF

FILTERS Throwaway — Factory Supplied

Quantity...Size (mm) 4...406 x 610 x 51 4...406 x 508 x 51 4...406 x 610 x 51

Access Location Either Side

STEAM COIL}

Max Working Pressure (kPag at 126°C) 138 Total Face Area (sq m) 0.62 0.62 0.62 1.24 Rows...Fins/m 1...355 1...355 1...355 1...394

HOT WATER COIL}

Max Working Pressure (kPag) 1034 Total Face Area (sq m) 0.62 0.62 0.62 1.24 Rows...Fins/m 2...335 2...335 2...335 2...335 Water Volume

(L) 31.4 52.6 (m3) 0.031 0.052

LEGEND

DX — Direct Expansion TXV— Thermostatic Expansion Valve { Units are shipped without refrigerant charge.

} Field installed accessory only.

Table 1E — 40RUS Physical Data, English — Chilled Water Units

UNIT 40RUS* 08 12 14 16

NOMINAL CAPACITY (Tons) 71/2 10 121/2 15

OPERATING WEIGHT (lb) Base Unit 390 391 661 677 Plenum 175 175 225 225

FANS

Qty...Diam. (in.) 1...15 1...15 2...15 2...15 Nominal Airflow (cfm) 3000 4000 5000 6000 Airflow Range (cfm) 2250---3750 3000---5000 3750---6250 4500---7500 Nominal Motor Hp (Standard Motor) 208/230---1---60 2.4 — — — 208/230---3---60 and 460---3---60 2.4 2.4 2.9 3.7 575---3---60 2.0 2.0 3.0 3.0

Motor Speed (rpm) 208/230---1---60 1725 — — — 208/230---3---60 and 460---3---60 1725 1725 1725 1725 575---3---60 1725 1725 1725 1725

CHILLED WATER COIL Enhanced Copper Tubes, Aluminum Sine---Wave Fins Max Working Pressure (psig) 435 Face Area (sq ft) – Upper 8.3 9.9 8.3 8.3 Face Area (sq ft) – Lower — — 5.5 8.3 Rows...Fins/in. 3...15

PIPING CONNECTIONS,

Quantity...Size (in.)

Chilled Water — In 1...13/8 ODF 2...13/8 ODF 2...13/8 ODM 2...13/8 ODM Chilled Water — Out 1...13/8 ODF 2...13/8 ODF 2...13/8 ODM 2...13/8 ODM Steam Coil, In (MPT) 1...21/2 Steam Coil, Out (MPT) 1...1/2 Hot Water Coil, In (MPT) 1...11/2 1...2 Hot Water Coil, Out (MPT) 1...11/2 1...2 Condensate (PVC) 1...11/4 ODM/1 IDF

FILTERS Throwaway — Factory Supplied

Quantity...Size (in.) 4...16 x 24 x 2 4...16 x 20 x 2 4...16 x 24 x 2

Access Location Either Side

STEAM COIL}

Max Working Pressure (psig at 260° F) 20 Total Face Area (sq ft) 6.67 6.67 13.33 13.33 Rows...Fins/in. 1...9 1...9 1...9 1...10

HOT WATER COIL}

Max Working Pressure (psig) 150 Total Face Area (sq ft) 6.67 6.67 13.33 13.33 Rows...Fins/in. 2...8.5 2...8.5 2...8.5 2...8.5 Water Volume (gal) 8.3 13.9 (ft3) 1.1 1.85

LEGEND

} Field installed accessory only.

Table 1F — 40RUS Physical Data, SI — Chilled Water Units

UNIT 40RUS* 08 12 14 16

NOMINAL CAPACITY (kW) 26 35 43 52

OPERATING WEIGHT (kg) Base Unit 177 177 300 307 Plenum 80 80 102 102

FANS

Qty...Diam. (mm) 1...381 1...381 2...381 2...381 Nominal Airflow (L/s) 1416 1888 2360 2831 Airflow Range (L/s) 1062---1770 1416---2360 1770---2949 2124---3539 Nominal Motor kW (Standard Motor) 208/230---1---60 1.79 — — — 208/230---3---60 and 460---3---60 1.79 1.79 1.79 2.76 575---3---60 1.49 1.49 1.49 2.24 Motor Speed (r/s) 208/230---1---60 28.8 — — — 208/230---3---60 and 460---3---60 28.8 28.8 28.8 28.8 575---3---60 28.8 28.8 28.8 28.8

CHILLED WATER COIL Enhanced Copper Tubes, Aluminum Sine---Wave Fins Max Working Pressure (kPag) 2999 Face Area (sq m) – Upper 0.77 0.91 0.77 0.77 Face Area (sq m) – Lower — — 0.51 0.77 Rows...Fins/m 3...591

PIPING CONNECTIONS,

Quantity...Size (in.)

Chilled Water — In 1...13/8 ODF 2...13/8 ODF 2...13/8 ODM 2...13/8 ODM Chilled Water — Out 1...13/8 ODF 2...13/8 ODF 2...13/8 ODM 2...13/8 ODM Steam Coil, In (MPT) 1...21/2 Steam Coil, Out (MPT) 1...1/2 Hot Water Coil, In (MPT) 1...11/2 1...2 Hot Water Coil, Out (MPT) 1...11/2 1...2 Condensate (PVC) 1...11/4 ODM/1 IDF

FILTERS Throwaway — Factory Supplied

Quantity...Size (mm) 4...406 x 610 x 51 4...406 x 508 x 51 4...406 x 610 x 51

Access Location Either Side

STEAM COIL}

Max Working Pressure (kPag at 125°C) 138 Total Face Area (sq m) 0.62 0.62 1.24 1.24 Rows...Fins/m 1...355 1...355 1...355 1...394

HOT WATER COIL}

Max Working Pressure (kPag) 1034 Total Face Area (sq m) 0.62 0.62 1.24 1.24 Rows...Fins/m 2...335 2...335 2...335 2...335 Water Volume

(L) 31.4 52.6 (m3) 0.031 0.052

LEGEND

} Field installed accessory only.

LEGEND

TXV — Thermostatic Expansion Valve

NOTES:

1. Dimensions in [ ] are in millimeters.

2. Direction of airflow.

3. Recommended clearance:

• Rear: 3 in. [914 mm] (2 ft, 6 in. [762 mm] with electric heat accessory)

• Front: 2 ft, 6 in. [762 mm]

• Right Side: 2 ft, 6 in. [762 mm]

• Left Side: 2 ft, 6 in. [762 mm]

• Local codes or jurisdiction may prevail.

4. Liquid piping not supplied by Carrier.

5. Duct flange is factory supplied and field installed.

UNIT

UNIT WEIGHT

lb (kg)

40RUA07 381 (173)

40RUA08 385 (175)

40RUA12 405 (184)

40RUQ07 385 (175)

40RUQ08 385 (175)

40RUQ12 427(194)

40RUS08 390 (177)

40RUS12 391 (177)

C10679

Fig. 1 -- Dimensions – Sizes 07 -- 12

LEGEND

TXV — Thermostatic Expansion Valve

NOTES:

1. Dimensions in [ ] are in millimeters.

2. Direction of airflow.

3. Recommended clearance:

• Rear: 3 in. [914 mm] (2 ft, 6 in. [762 mm] with electric heat accessory)

• Front: 2 ft, 6 in. [762 mm]

• Right Side: 2 ft, 6 in. [762 mm]

• Left Side: 2 ft, 6 in. [762 mm]

• Local codes or jurisdiction may prevail.

4. Liquid piping not supplied by Carrier.

5. Duct flange is factory supplied and field installed.

713 (323) 661 (300)

UNIT

UNIT WEIGHT

lb (kg)

40RUA14

40RUA16

40RUQ16

670 (304) 685 (331)

40RUS16 677 (307)

40RUS14

C10680

Fig. 2 -- Dimensions – Sizes 14 and 16

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

4 0 R U A A 1 4 A 1 A 6 – 0 A 0 A 0

Model Type 40RU = Carrier Fan Coil Puronr R---410A Refrigerant

Type of Coil

Q = DX Coil for Heat Pump Duty A = Standard DX Coil

S = Chilled Water Coil

Refrigerant Options A = None

Nominal Tonnage 07 = 6 Tons 08 = 7.5 Tons 12 = 10 Tons

16 = 15 Tons 14 = 12.5 Tons

Not Used A = Place Holder

Indoor Fan Options 1 = Fan Drive and Motor - Low / Motor Efficiency - Standard

2 = Fan Drive and Motor - Med / Motor Efficiency - Standard

3 = Fan Drive and Motor - High / Motor Efficiency - Standard Coil Options A = Al/Cu

Voltage 1 = 575/3/60 3 = 208/230/1/60 (07 and 08 Only) 5 = 208/230/3/60 (Size 16 and Indoor Fan 3 Only) 6 = 460/3/60

Design Rev

– = Catalog Model Number 1 = Design Revision (original)

Brand / Packaging 0 = Standard

Not Used A = Place Holder

Service Options 0 = Non-Painted Cabinet 1 = Painted Cabinet

Not Used A = Place Holder

Not Used 0 = Place Holder

C10681 Fig. 3 -- Model Number Nomenclature

SETANGISEDNOITISOP

)radnelac lacsif( erutcafunam fo keeW1−2

)ASU ,saxeT ,PTE = G( noitacol gnirutcafunaM5 rebmun laitneuqeS6−10

1 2 3 4 5 6 7 8 9 10 2 6 1 0 G 1 2 3 4 5

POSITION NUMBER

TYPICAL

Year of manufacture (“10” = 2010)3−4

C10682 Fig. 4 -- Serial Number Nomenclature

TXV COIL

REMOVE FOAM BLOCK

LEGEND

TXV — Thermostatic Expansion Valve

C10683 Fig. 5 -- Foam Block Location

Unit Positioning -- The unit can be mounted on the floor for vertical application with return air entering the face of the unit and supply air discharging vertically through the top of the unit. The unit can also be applied in a horizontal arrangement with return air entering horizontally and the supply air discharging horizontally. When applying the unit in a horizontal arrangement, ensure the condensate drain pan is located at the bottom center of the unit for adequate condensate disposal. See Fig. 6 for condensate connections for each unit position.

IMPORTANT: Do NOT attempt to install unit with return air entering top panel of unit. Condensate will not drain from unit.

Typical positioning and alternate return air locations are shown in Fig. 6. Alternate return air locations can be used by moving the unit panel from the alternate return air location to the standard return air location. Refer to overhead suspension accessory drawing (Fig. 7) for preferred suspension technique. The unit needs support underneath to prevent sagging.

LEGEND

Accessory Line

Alternate Air Intake and Discharge

Air Intake and Discharge

Note: Maintain recommended clearances per Fig. 1 and Fig. 2

PLUG

PLUG CONDENSATE

DRAIN

C10684

Fig. 6 -- Typical Unit Positioning

UNIT SIZES 07 - 12

NOTE: Dimensions in [ ] are millimeters.

OVERHEAD SUSPENSION ACCESSORY

UNIT SIZES 14 - 16

C10685 Fig. 7 -- Preferred Suspension Technique

Unit Isolation -- Where extremely quiet operation is essential, install isolators between floor and base of unit, or between ceiling and top section of unit.

Be sure that unit is level and adequately supported. Use channels at front and sides of unit for reference points when leveling.

Refrigerant and Chilled Water Piping Access -- The 40RU Series units come with standard knockouts for refrigerant and chilled water piping. These knockouts are located on both sides of the unit for installation flexibility.

The standard knockouts provide sufficient access to the unit’s coils for all 40RUA*07, 08, 12, 14, 16 and 40RUQ*07, 08, 12 units. 40RUQ*16 units, as well as 40RUS*08, 12, 14, and 16 units require additional holes which must be field--fabricated to accommodate the piping. See Fig. 8 for positions and dimensions of the additional access holes required for the 40RUQ*16 and 40RUS units. Recommended access hole use is also listed for all units. Note that Fig. 8 shows the access holes on the control--box side of the unit; this is the side of the unit with the coil headers, so it is used most often for piping access.

IMPORTANT: Do not bury refrigerant piping underground.

Refrigerant Piping -- See Tables 1A–1F for refrigerant pipe connection sizes. For ease in brazing, it is recommended that all internal solder joints be made before unit is placed in final position.

The 40RU direct--expansion units have internal factory--installed thermostatic expansion valves (TXVs), distributors, and nozzles for use with R--410A. See Table 2 for part numbers. Knockouts are provided in the unit corner posts for 40RU refrigerant piping. See Fig. 8, which also lists recommended knockouts and access holes to use for each 40RU unit size. Recommended fittings are listed in Table 3.

The sensor bulb capillary tubes must be routed from the TXVs inside the unit through one of the piping access holes. Clamp the TXV sensor bulb on a vertical portion of the suction line, outside the unit. See Fig. 9.

NOTE: Be sure to remove the styrofoam shipping pad from the TXV. Verify that it has been removed. See Fig. 5.

IMPORTANT: Never attach the sensor to the suction manifold. Do NOT mount the sensor on a trapped portion of the suction line.

The 40RU Series evaporator coils have a face--split design.

Ensure that lower circuit of coil is first on/last off when connected to the condensing unit and/or system controls. See Fig. 10.

External TXV equalizer connections are provided and factory--brazed into the coil suction manifolds.

If suction line must be horizontal, clamp bulb to suction line at least 45 degrees above bottom, at approximately the 4 o’clock or 8 o’clock position. See Fig.11.

A B C

C10686

UNIT USE HOLE

NUMBERS

FIELD---FABRICATED HOLE DIAMATERS

in. (mm)

FIELD---FABRICATED HOLE POSITION

DIMENSIONS, in. (mm)

No. 5 No. 6 No. 7 A B C

40RUA*07, 08

40RUQ*07, 08 1, 3 — — — — — —

40RUA*12, 14, 16

40RUQ12 1, 2, 3, 4 — — — — — —

40RUS*08, 12 4, 5 13/4 (44.5) — — 6.25 (158.8) — —

40RUS*14, 16 4, 5, 6, 7 13/4 (44.5) 13/4 (44.5) 13/4 (44.5) 3.0 (76.2) 6.0 (152.5) 10.5 (266.7)

40RUQ*16 3{, 5, 6, 7 11/8 (28.6) 11/8 (28.6) 13/4 (44.5) 3.25 (82.6) 6.125 (155.6) 10.38 (263.7) { Must be enlarged from 11/8 in. (28.6mm) to 13/4 in. (44.5mm) NOTE: Access hole knockouts 1---4 are factory--- supplied.

Fig. 8 -- Refrigerant and Chilled Water Piping Access Holes

LEGEND:

TXV – Thermostatic Expansion Valve NOTE: Component location arrangemetshown for field installation of sight glasses, solenoid valves, filter driers, and TXV sensing bulbs.

The TXVs and equilizer lines are factory installed.

UPPER

SPLIT

AIRFLOW

LOWER

SPLIT

AIRFLOW

15 DIAMS

MIN 10

DIAMS

8 DIAMS

MIN

TXV

SENSING

BULB

EQUALIZER LINE

SIGHT

GLASSTXV

SOLENOID

VALVE

FILTER

DRIERTXV

SENSING

BULB

TXV

8 DIAMS

MIN

15 DIAMS

MIN 10

DIAMS

INDOOR

COIL

EQUALIZER

LINE

Single Circuit Coil Piping Configuration - RU*07, 08

For single compressor condensing units.

Dual Circuit Coil Piping Configuration - RU*12-16

For single compressor condensing units

UPPER

SPLIT

AIRFLOW 15 DIAMS

MIN 10

DIAMS

8 DIAMS

MIN

TXV

SENSING

BULB

EQUALIZER LINE

SIGHT

GLASS

TXV

SOLENOID

VALVE

FILTER

DRIER

C10687 Fig. 9 -- Face--Split Coil Suction and Liquid Line Piping (Typical)

FIRST ON/LAST OFF = B

VERTICAL INSTALLATION

FIRST ON/LAST OFF = A

HORIZONTAL INSTALLATION

C10688

Fig. 10 -- Typical Evaporator Coil Connections (40RU)

LEGEND

TXV — Thermostatic Expansion Valve NOTE: The 8 o’clock position is shown above.

C10689

Fig. 11 -- TXV Sensing Bulb Location

Table 2 – Factory--Installed Nozzle and Distributor Data

UNIT COIL TYPE

STD

TXV

Qty...Part No.

DISTRIBUTOR

Qty...Part No.

FEEDER TUBES

PER DISTRIBUTOR{

Qty...Size (in.)

NOZZLE

Qty...Part No.

40RUA*07 4 Row 1...BBIZE---5---GA 1...1135 12...1/4 1...G4

40RUQ*07 3 Row 1...BBIZE---5---GA 1...1136 15...1/4 1...G5

40RUA*08 4 Row 1...BBIZE---6---GA 1...1136 15...1/4 1...G5

40RUQ*08 4 Row 1...BBIZE---8---GA 1...1113 12...3/16 1...G5

40RUA*12 4 Row 2...BBIZE---4---GA 2...1135 ă9...1/4 2...G3

40RUQ*12 4 Row 2...BBIZE---5---GA 2...1113 9...3/16 2...G3

40RUQ*16 4 Row 2...BBIZE---8---GA 2...1113 10...3/16 2...G5

40RUA*14 4 Row 2...BBIZE---5---GA 2...1113 12...3/16 2...G3

40RUA*16 4 Row 2...BBIZE---6---GA 2...1136 16...3/16 2...G4

{ Feeder tube size is 1/4 in. (6.35 mm).

NOTE: Hot gas bypass applications require field---supplied auxiliary side connector.

Table 3 – Fitting Requirements

UNIT ACCESS

HOLE NO.}

CONNECTION

TYPE CIRCUIT FITTINGS REQUIRED†

(in.)

40RUA*07

40RUQ*07

1 Suction —

11/8 Street Elbow

11/8 Nipple, 105/8 L

11/8 Long Radius Elbow

3 Liquid —

5/8 Street Elbow 5/8 Nipple, 85/8 L 5/8 Long Radius Elbow

40RUA*08

40RUQ*08

1 Suction —

11/8 Street Elbow

11/8 Nipple, 85/8 L

11/8 Long Radius Elbow

3 Liquid —

5/8 Street Elbow 5/8 Nipple, 85/8 L 5/8 Long Radius Elbow

40RUS*08

40RUS*12

4 Return —

13/8 Nipple, 43/8 L

13/8 Long Radius Elbow

13/8 Nipple, 73/8 L

13/8 Long Radius Elbow

5 Supply — 13/8 Nipple, 65/8 L

13/8 Long Radius Elbow

40RUA*12

1 Suction Lower (2) 11/8 Street Elbow

2 Liquid Lower

5/8 Street Elbow 5/8 Nipple, 81/2 L 5/8 Long Radius Elbow

3 Liquid Upper

5/8 Street Elbow 5/8 Nipple, 131/2 L 5/8 Long Radius Elbow

4 Suction Upper

11/8 Nipple, 53/4 L

11/8 Long Radius Elbow

11/8 Nipple, 12 L

11/8 Long Radius Elbow

} See Fig. 8 for access hole location by number.

† Fittings are listed in order from header or tee stub connection out to access hole in corner support post.

Table 3 -- Fitting Requirement (cont)

UNIT ACCESS

HOLE NO.}

CONNECTION

TYPE CIRCUIT FITTINGS REQUIRED†

(in.)

40RUQ*12

1 Suction Lower (2) 11/8 Street Elbow

2 Liquid Lower

5/8 Street Elbow 5/8 Nipple, 51/2 L 5/8 Long Radius Elbow

3 Liquid Upper

5/8 Street Elbow 5/8 Nipple, 101/2 L 5/8 Long Radius Elbow

4 Suction Upper

11/8 Nipple, 55/8 L

11/8 Long Radius Elbow

11/8 Nipple, 12 L

11/8 Long Radius Elbow

40RUA*14

1 Suction Lower

11/8 Street Elbow

11/8 Nipple, 75/8 L

11/8 Long Radius Elbow

2 Liquid Lower

5/8 Street Elbow 5/8 Nipple, 17/16 L 5/8 Long Radius Elbow

3 Liquid Upper

5/8 Street Elbow 5/8 Nipple, 111/2 L 5/8 Long Radius Elbow

4 Suction Upper

11/8 Nipple, 55/8 L

11/8 Long Radius Elbow

11/8 Nipple, 13 L

11/8 Long Radius Elbow

40RUA*16

1 Suction Lower

11/8 Street Elbow

11/8 Nipple, 723/4 L

11/8 Long Radius Elbow

2 Liquid Lower

5/8 Street Elbow 5/8 Nipple, 13/8 L 5/8 Long Radius Elbow

3 Liquid Upper

5/8 Street Elbow 5/8 Nipple, 111/2 L 5/8 Long Radius Elbow

4 Suction Upper

11/8 Nipple, 55/8 L

11/8 Long Radius Elbow

11/8 Nipple, 13 L

11/8 Long Radius Elbow

40RUQ*16

3 Suction Lower 11/8 Nipple, 3 L 11/8 Long Radius Elbow

5 Suction Lower

5/8 Nipple, 27/8 L 5/8 45_ Elbow 5/8 Nipple, 15/8 L 5/8 Long Radius Elbow

6 Liquid Upper

5/8 Nipple, 27/8 L 5/8 45_ Elbow 5/8 Nipple, 41/4 L 5/8 Long Radius Elbow

7 Suction Upper

11/8 Nipple, 5 L 11/8 45_ Elbow 11/8 Nipple, 83/4 L 11/8 Long Radius Elbow

} See Fig. 8 for access hole location by number.

† Fittings are listed in order from header or tee stub connection out to access hole in corner support post.

Table 3 -- Fitting Requirement (cont)

UNIT ACCESS

HOLE NO.}

CONNECTION

TYPE CIRCUIT FITTINGS REQUIRED†

(in.)

40RUS*14

40RUS*16

4 Supply Lower

13/8 Long Radius Elbow

13/8 Nipple, 33/4 L

13/8 Long Radius Elbow

5 Return Lower

13/8 Long Radius Elbow

13/8 Nipple, 33/8 L

13/8 Long Radius Elbow

6 Return Upper

13/8 Long Radius Elbow

13/8 Nipple, 7 L

13/8 Long Radius Elbow

7 Supply Upper

13/8 Long Radius Elbow

13/8 Nipple, 113/4 L

13/8 Long Radius Elbow

} See Fig. 8 for access hole location by number.

† Fittings are listed in order from header or tee stub connection out to access hole in corner support post.

Chilled Water Piping -- See Tables 1E and 1F for chilled water connection sizes. For ease in brazing, it it recommended that all internal solder joints be made before unit is placed in final position.

Knockouts are provided in the unit corner posts for 40RUS refrigerant piping. Additional field--fabricated access holes are required for 40RUS chilled water piping.

See Fig. 8, which lists recommended knockouts and access holes to use for each 40RUS unit size.

To size, design, and install chilled water piping, consult the Carrier System Design manual. See Fig. 12 for an example of a typical installation. Recommended fittings are listed in Table 3.

To access 40RUS coil vents and drains, remove the unit side panel over the coil header. Vent and drain plugs are on the top and bottom of header, respectively. See the Service section for information on preventing coil freeze--up during winter.

C10690

Fig. 12 -- Typical 40RUS Chilled Water Piping

Condensate Drain — Install a trapped condensate drain line to unit connection as shown in Fig. 13. The unit drain connection is a PVC stub. See Fig. 14. Some areas may require an adapter to connect to either galvanized steel or copper pipe. For these applications, install a field--supplied threaded PVC adapter.

3” MIN.

[76]

NOTE: Dimensions in [ ] are in millimeters C10691

Fig. 13 -- Condensate Drains

NOTE: A trap must be installed in the condensate drain line to ensure that the static pressure of fans is balanced with the water column in the drain line and that condensate can drain completely from pan. Without a trap, air can be drawn up drain line until water level in condensate pan becomes equal to static pressure created by fans, preventing complete drainage. Conditions will worsen as filters become dirty.

Install clean--out plugs in trap. Pitch drain line downward to an open floor drain or sump. Provide service clearance around drain line to permit removal of unit panels.

Observe all local sanitary codes.

C10692

Fig. 14 -- Drain Pan Slope Adjustment

As shipped, the unit’s condensate drain pan is NOT sloped towards the drain connection. The pan slope must be changed to pitch towards the side of the unit with the drain connection. See Fig. 14. Loosen the 2 screws next to the drain outlet at both ends of the unit, push drain pan down in the slots near the drain connection, and up in the slots on the opposite end. Re--tighten screws. The pan should have a pitch of at least 1/4--in. over its length toward the drain connection.

Fan Motor and Drives -- Motor and drive packages are factory installed in all units. The motor and drive packages consist of the following items:

1 — fan motor

1 — adjustable motor pulley

1 — fan pulley

1 — fan belt (40RUA*07--12, 40RUQ*07--12, 40RUS*08--12 units)

2 — matched fan belts (40RUA*14--16, 40RUQ*16, 40RUS*14--16 units)

For instructions on changing fan rotation, changing drive speeds and adjusting drives, see Pulley and Drive Adjustment in the Service section.

Power Supply and Wiring -- Check the unit data plate to ensure that available power supply matches electrical characteristics of the unit. Provide a disconnect switch with an integrated lock--out feature of size required to provide adequate fan motor starting current. See Tables 4--6 for unit electrical data.

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal injury or death.

Do not use gas piping as an electrical ground. Unit cabinet must have an uninterrupted, unbroken electrical ground to minimize the possibility of personal injury if an electrical fault should occur. This ground may consist of electrical wire connected to unit ground lug in control compartment, or conduit approved for electrical ground when installed in accordance with NEC (National Electrical Code); ANSI/NFPA 70, latest edition (in Canada, Canadian Electrical Code CSA [Canadian Standards Association] C22.1), and local electrical codes.

! WARNING

FIRE HAZARD

Failure to follow this warning could result in intermittent operation or performance satisfaction.

Do not connect aluminum wire between disconnect switch and fan coil unit. Use only copper wire.

(See Fig. 15)

! WARNING

COPPER

WIRE ONLY

ELECTRIC

DISCONNECT

SWITCH

ALUMINUM

WIRE

A93033

Fig. 15 -- Disconnect Switch and Unit

Install disconnect switch and power wiring in accordance with all applicable local codes. See Fig. 15--17 and the unit label diagram. For units with motor sizes less than 5 Hp (3.7 kW), connect power wiring to unit with no. 10 ring terminal. For units with motor sizes of 5 Hp (3.7 kW) or more, connect power wiring with 1/4--in. ring terminal.

FILTER

ELEMENTS

FILTER

RETAINER

CLIP

FAN SCROLL

CONDENSATE

DRAIN

CONNECTION

(HORIZONTAL)

MOTOR

AND DRIVE

FAN

CONTACTOR

BOX

WIRE

ACCESS

COIL

FAN DRIVE

PULLEY

TXV BULB

ACCESS

REFRIGERANT

PIPING ACCESS

CONDENSATE

DRAIN

CONNNECTION

(VERTICAL)

LEGEND

TXV — Thermostatic Expansion Valve

C10693

Fig. 16 -- Wiring and Service Access (Side Panel Removed)

The 40RU size 07--16 units that have motors wired for 460--v, 3--ph, 60 Hz operation can be field--converted to 208/230--v, 3--ph, 60 Hz operation. Rewire the motor according to the diagram plate on the motor. After reconfiguring the motor, mark the motor specifying 208--v or 230--v operation replacing the 460--v sticker information on the units’ corner post.

Fan motors are factory--installed on all units. Indoor--fan contactors are located in the fan contactor box behind the side access panel (see Fig. 16 and 17). Wire the thermostat to the 24--v control circuit terminal block located in the side of the fan contactor control box, according to Fig. 18 or the unit label diagram. If the air handler is part of a split system, complete the wiring from the condensing unit to the thermostat shown in Fig. 18.

23 22 21

13 12 11

° C

V

R J

A

W

FAN

CONTACTOR

24V

TERMINAL

BLOCK

POWER

WIRING

KNOCKOUT

C10694

Fig. 17 -- Fan Contactor Box and Terminal Block (Cover Removed) (Typical)

Table 4 – Electrical Data, Standard Motors

UNIT V---PH---Hz{ VOLTAGE

LIMITS

FAN MOTOR POWER SUPPLY

Hp (kW) FLA Minimum Circuit Amps MOCP

40RUA*07

40RUQ*07

208/230---1---60 187---253 1.3 (0.97) 7.6 9.5 15 208/230---3---60 187---253 2.4 (1.79) 5.8 7.3 15 460---3---60 414---506 2.4 (1.79) 2.6 3.3 15 575---3---60 518---632 1.0 (0.75) 1.4 1.7 15

40RUA*08

40RUQ*08

40RUS*08

208/230---1---60 187---253 2.4 (1.79) 11.0 13.8 20 208/230---3---60 187---253 2.4 (1.79) 5.8 7.3 15 460---3---60 414---506 2.4 (1.79) 2.6 3.3 15 575---3---60 518---632 2.0 (1.49) 2.4 8.0 15

40RUA*12

40RUQ*12

40RUS*12

208/230---3---60 187---253 2.4 (1.79) 5.8 7.5 15 460---3---60 414---506 2.4 (1.79) 2.6 3.3 15 575---3---60 518---632 2.0 (1.49) 2.4 3.0 15

40RUA*14

40RUS*14

208/230---3---60 187---253 2.4 (1.79) 5.8 7.5 15 460---3---60 414---506 2.4 (1.79) 2.6 3.3 15 575---3---60 518---632 3.0 (2.24) 3.8 4.8 15

40RUA*16

40RUQ*16

40RUS*16

208/230---3---60 187---253 3.7 (2.76) 10.6 13.3 20 460---3---60 414---506 3.7 (2.76) 4.6 6.0 15 575---3---60 518---632 3.0 (2.24) 3.8 4.8 15

See Legend and Notes on page 21.

Table 5 – Electrical Data, Alternate Motors

UNIT V---PH---Hz{ VOLTAGE

LIMITS

FAN MOTOR POWER SUPPLY

Hp (kW) FLA Minimum Circuit Amps MOCP

40RUA*07

40RUQ*07

208/230---1---60 187---253 2.4 (1.79) 11.0/11.0 13.8/13.8 20

208/230---3---60 187---253 2.9 (2.16) 7.5 9.4 15

460---3---60 414---506 2.9 (2.16) 3.4 4.3 15

575---3---60 518---632 2.0 (1.49) 2.4 3.0 15

40RUA*08

40RUQ*08

40RUS*08

208/230---1---60 187---253 2.4 (1.79) 11.0 13.8 15

208/230---3---60 187---253 2.9 (2.16) 7.5/7.5 9.4/9.4 15

460---3---60 414---506 2.9 (2.16) 3.4 4.3 15

575---3---60 518---632 3.0 (2.24) 3.8 4.8 15

40RUA*12

40RUQ*12

40RUS*12

208/230---3---60 187---253 3.7 (2.76) 10.5/10.5 13.3/13.3 20

460---3---60 414---506 3.7 (2.76) 4.8 6.0 15

575---3---60 518---632 3.0 (2.24) 3.8 4.8 15

40RUA*14

40RUS*14

208/230---3---60 187---253 3.7 (2.76) 10.2 12.7 20

460---3---60 414---506 3.7 (2.76) 4.8 6.0 15

575---3---60 518---632 5.0 (3.73) 5.1 6.4 15

40RUA*16

40RUQ*16

40RUS*16

208/230---3---60 187---253 5.0 (3.73) 14.7/13.6 18.4/17.0 30/25

460---3---60 414---506 5.0 (3.73) 6.8 8.5 15

575---3---60 518---632 5.0 (3.73) 5.1 6.4 15

See Legend and Notes on page 21.

Table 6 – Fan Contactor Coil Data

UNIT

40RU*

VOLTAGE

(vac)

MAXIMUM

HOLDING

VA

07, 08, 12, 14, 16 24 10

Legend and Notes for Tables 4 and 5

LEGEND:

FLA --- Full Load Amps MOCP --- Maximum Overcurrent Protection { Motors are designed for satisfactory operation within 10% of normal voltage shown. Voltages should not exceed the limits shown in the Voltage Limits column.

NOTES:

1. Minimum circuit amps (MCA) and MOCP values are calcu-lated in accordance with The NEC. Article 440.

2. Motor FLA values are established in accordance with Under-writers’ Laboratories (UL). Standard 1995.

3. Unbalanced 3-Phase Supply Voltage Never operate a motor where a phase imbalance in supply voltage is greater than 2%. Use the formula in the example (see column to the right) to determine the percentage of volt-age imbalance.

4. Installation with Accessory Electric Heaters Size the Field Power Wiring between the heater TB1 and the 40RU indoor fan motor per NEC Article 430---28 (1) or (2) (depends on length of conduit between heater enclosure and 40RU power entry location). Install wires in field--- installed conduit.

Example: Supply voltage is 230-3-60

% Voltage Imbalance = 100 x max voltage deviation from average voltage average voltage

AB = 393 v BC = 403 v AC = 396 v

Average Voltage = (393 + 403 + 396)

3 3

= 397

Determine maximum deviation from average voltage.

(AB) 397 – 393 = 4 v (BC) 403 – 397 = 6 v (AC) 397 – 396 = 1 v Maximum deviation is 4 v.

Determine percent of voltage imbalance.

% Voltage Imbalance = 100 x

= 1.5%

This amount of phase imbalance is satisfactory as it is below the maximum allowable 2%.

IMPORTANT: If the supply voltage phase imbalance is more than 2%, contact your local electric utility company immediately.

C10695

Fig. 18 -- Unit Wiring

Connecting Ductwork -- Refer to the Carrier System Design Manual for the recommended design and layout of ductwork. Fig. 19 shows recommended duct connection to units with 2 fans.

UNIT OPERATION HAZARD

Failure to follow this caution could cause equipment damage.

Do not operate unit without ductwork or discharge plenum unless fan speed has been adjusted for external static pressure of zero in. wg. Failure to do so may result in motor overload.

CAUTION!

DISCHARGE CONNECTIONS — Duct flanges are factory--supplied; they are shipped inside the unit attached to the hairpin end of the coil tube sheet for field installation.

Using the existing screws, install the duct flanges on the unit’s fan deck. Each fan discharge requires 2 flanges; each flange must be bent in the middle to conform to the discharge opening. See Fig. 20. After flanges are installed, connect them to the supply duct using a canvas connection to prevent vibration. It is important that this connection be properly fabricated to prevent high air friction losses and air noise.

RETURN CONNECTIONS — When using return--air ductwork, route return--air duct to the unit’s return air inlet near the filter rack, using a canvas connection to prevent transmission of unit vibration. If the duct blocks off the unit’s access panel, provide a slip joint in the ductwork to permit removal for servicing.

C10696

Fig. 19 -- Typical Fan Discharge Connections for Multiple Fan Units

OUTDOOR--AIR INLET CONNECTIONS — Connect outdoor--air inlet to field--installed accessory economizer.

Refer to Economizer Installation Instructions.

Return--Air Filters -- Type and size of filters are shown in Tables 1A – 1F and are factory--supplied and factory--installed. In all units with 2 fans, a filter replacement tool (hook) is shipped inside the unit for field use when replacing filters. See the Service section for instructions on filter element replacement.

C10697

Fig. 20 -- Duct Flange Installation

START--UP

Before starting unit, check the following and correct as necessary:

S Is unit solidly supported?

S Is fan adjusted for speed and pulley alignment?

S Are pulleys, motor, and bearings securely mounted?

S Are there any loose parts that will rattle or vibrate?

S Is condensate drain pan pitched for correct drainage?

S Are coil baffle plates tight against coil to prevent air bypass?

S Are all panels securely fastened?

S Are all electrical connections correct and tight?

40RUA and 40RUQ ONLY —

S Is TXV bulb located on suction tube per Fig. 21?

S Is the capillary tube to the bulb free of kinks and not subject to pinching?

S Is the bulb well secured to the suction tube with strap?

Also refer to condensing unit or outdoor heat pump section instructions before starting a split system. A split system start--up checklist is provided at the end of these instructions.

IMPORTANT! / IMPORTANT

40RU500072 2.0

The sensor bulb capillary tubes must be routed from the TXVs inside the unit through one of the piping access holes. Clamp the TXV sensor bulb on a vertical portion of the suction line, outside the unit.

See Fig. 7 in the installation, start-up and service instruction. Super heat must be adjusted in field.

Les tubes capillaires du capteur doivent être acheminé à partir du détendeur thermostatique situé à l'intérieur de l'appareil au travers de l'un des trous d'accès de conduites. Attacher le capteur sur une portion verticale de la conduite de succion, à l'extérieur de l'appareil. Voir la Figure 7 dans le manuel d'installation, de mise en marche, et d'entretien. La surchauffe doit être ajustée sur place.

AIR FLOW

CIRCULATION

D'AIR

UPPER SPLIT

BLOC SUPÉRIEUR

LOWER

SPLIT

BLOC

INFÉRIEUR

AIR FLOW

CIRCULATION

D'AIR 15 DIAMS MIN

15 x DIA. MIN

10 DIAMS

10 x DIA. MIN

TXV SENSING

BULB

CAPTEUR TXV

15 DIAMS MIN

15 x DIA. MIN

10 DIAMS

10 x DIA. MIN

TXV

SENSING

BULB

CAPTEUR TXV

EQUALIZER LINE

CONDUITE D'ÉQUILIBRAGE

SIGHT GLASS

HUBLOT

8 DIAMS MIN

8 x DIA. MIN

TXV

SOLENOID

VALVE

VANNE

SOLÉNOÏDE

FILTER

DRIER

FILTRE

DESSICCATEUR

TXV

EQUALIZER LINE

CONDUITE D'ÉQUILIBRAGE

8 DIAMS MIN

8 x DIA. MIN INDOOR COIL

ÉCHANGEUR INTÉRIEUR

C10827

Fig. 21 -- Label, TXV Bulb Location

Adjusting TXV for Superheat (40RUA and RUQ only) —

The unit--mounted thermostatic expansion valve(s) is/are factory set to provided superheat at the bulb location in 10_F to 15_F (5.5_C to 8.3_C) range. Actual system load conditions may require adjustment of the factory setting.

To adjust the TXV superheat setting:

1. Remove the seal cap from the bottom of the TXV body.

2. To increase superheat, turn the stem clockwise. To de-crease the superheat, turn the stem counterclockwise.

Do not turn the stem more than one full turn.

3. Wait until suction pressure and superheat stabilize.

This may take more than 30 minutes.

4. Continue adjustment until superheat reaches 10_F to 15_F (5.5_C to 8.3_C).

5. Replace the seal cap; tighten.

INSTALLER / INSTALLATEUR

TXV superheat must be checked at initial unit start-up and adjusted if necessary.

Superheat must be 10 - 15 deg F.

La surchauffe TXV doit être vérifiée au moment de la mise en route initiale et ajustée si nécessaire. La surchauffe doit être comprise entre 10 et 15 degrés F.

40RU500073 2.0

C10828

Fig. 22 -- Label, TXV Adjustment

SERVICE

Inspection and maintenance should be performed at regular intervals and should include the following:

S Complete cleaning of cabinet, fan wheel, cooling coil, condensate pan and drain, heating coils, and return--air grille (if present).

S Inspection of panels and sealing of unit against air leakage.

S Adjustment of fan motor, belt, bearings, and wheels.

S Cleaning or replacement of filters.

S Testing for cooling/heating system leaks.

S Checking of all electrical connections.

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal injury or death.

Before performing service or maintenance operations on unit, always turn off main power switch to unit and install lockout tag. Unit may have more than one power switch.

! WARNING

Most unit service can be performed by removing one or both of the unit’s side panels. Coil cleaning or removal or insulation cleaning may require removal of a rear, top, or bottom panel, depending on the unit’s orientation. When service is completed, replace unit panels.

Panels -- Panels are fastened to unit frame with sheet metal screws. Fan and coil compartment must be sealed tightly after service to prevent air from bypassing the cooling coil.

Fan Motor Lubrication -- Fan motor supplied with unit is permanently lubricated and requires no further lubrication.

Fan Shaft Bearings -- Bearings on size 07--12 units are sealed, permanently lubricated bearings that require no further lubrication. Size 14--16 units have pillow--block bearings (Fig. 23) that must be lubricated with suitable bearing grease approximately every 3 months. See Table 7 for suitable lubricants.

Table 7 – Lubricant Data

MANUFACTURER LUBRICANT

Mobil Mobilplex EP No. 2

Sunoco Prestige 42

Texaco Multifak 2

Texaco Regal AFB---2*

*Preferred lubricant, contains rust and oxidation inhibitors.

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Fig. 23 -- Fan Shaft, Bearings, and Fan Wheel (Typical)

Centering Fan Wheel -- If fan and fan shaft assembly are not properly centered, blades may scrape against the blower side scroll plate or may create an objectionable whistling noise. It may be necessary to adjust individual fan wheels or move entire fan shaft. See the following two sections.

Fan Shaft Position Adjustment -- Loosen setscrew or locking collar of each fan shaft bearing. Slide shaft into correct position and replace locking collar (Fig. 24). To replace locking collar, push collar up against inner face of bearing. Turn collar in direction of fan rotation until tight, and tighten setscrew. Tightening locking collar in direction of fan rotation results in further tightening of collar should setscrew work itself loose.

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Fig. 24 -- Fan Shaft Bearing

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Fig. 25 -- Fan Motor Mounting

Individual Fan Wheel Adjustment -- Loosen the 2 locking bolts holding fan wheel hub to shaft. See Fig. 23.

Position fan wheel in center of the fan housing and tighten locking bolts. Clearance between wheel and housing should be the same on both sides.

Fan Belts -- Motor mounting plate and motor support angles are slotted to permit both vertical and horizontal adjustment. Adjust belt(s) for correct deflection by loosening motor plate mounting bolts, moving motor/plate assembly forward or back, and re tightening bolts. Press down on belt with one finger midway between fan and motor pulleys to check deflection. For units with motor sizes up to and including 3.7 Hp (2.76 kW), correct deflection is 3/16--in. (4.8 mm). For larger motor sizes, correct deflection is 1/8--in. (3.2 mm). See Fig. 25.

If complete belt replacement is required during servicing, loosen the motor plate mounting bolts (Fig. 25), move motor/plate assembly towards fan pulley, and pull belt(s) off pulleys. Reverse the procedure with new bolts and readjust deflection.

Fan Rotation -- Correct fan rotation with respect to fan outlet is shown in Fig. 26.

To reverse the direction of rotation of a 3--phase fan motor, reverse any 2 of the power leads. Refer to the connection diagram on the inside of motor terminal box cover for proper reversing procedure of single--phase motor.

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Fig. 26 -- Fan Rotation

Fan Pulley Alignment -- Align as follows:

1. Loosen setscrews on pulleys.

2. Align pulleys visually and tighten setscrews on fan pulley to lock it in place.

3. Use the methods shown in Fig. 27 to check proper pulley alignment.

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Fig. 27 -- Fan Pulley Adjustments

4. If pulleys are not in correct alignment, loosen the mo-tor holddown bolts and slide the motor axially until the pulleys are aligned.

5. Tighten motor holddown bolts.

Pulley and Drive Adjustment -- To obtain desired fan speed, refer to the fan motor and drive data in Tables 8A--11D and adjust fan motor pulley as follows:

1. Remove belt from fan motor pulley after loosening motor from motor base.

2. Loosen setscrew in moveable flange of pulley. Screw moveable flange toward fixed flange to increase the fan speed and away from fixed flange to reduce…