Carrier 40RU User Manual

40RU
Packaged Air---Handling Units
60 Hz
With PuronR(R---410A) Refrigerant
Sizes 25, 28, 30

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 11............................

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 21.......................

Return--Air Filters 21..........................

START--UP 23.................................

SERVICE 23–36...............................

Panels 23....................................

Fan Motor Lubrication 24.......................

Fan Shaft Bearings 24..........................

Centering Fan Wheel 24........................

Fan Shaft Position Adjustment 24................

Individual Fan Wheel Adjustment 25..............

Fan Belts 25.................................

Fan Rotation 25...............................

Fan Pulley Alignment 25.......................

Pulley and Drive Adjustment 25..................

Condensate Drains 25..........................

Return--Air Filters 25..........................

Chilled Water Coil Freeze Protection 26...........

Coil Removal 26..............................

Cleaning Cooling Coil 26.......................

Cleaning Insulation 26.........................

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

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.

. When you see this symbol on the

!

WARNING

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.

R

40RU

Puron
higher pressures than standard R--22 systems. Do not
use R--22 service equipment or components on Puron
refrigerant equipment.

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.

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.

(R--410A) refrigerant systems operate at

!

WARNING

!

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, con­densate drain, duct connections, and required clear­ances 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:

1

S Rear: 3 ft (914 mm) [2

accessory]

1

S Front: 2
S Right Side: 3
S Left Side: 2

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.

/2ft (762 mm)

1

/2ft (1067 mm)

1

/2ft (762 mm)

/2ft (762 mm) with electric heat

!

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.

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.

2

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

UNIT 40RUA* 25 28 30

NOMINAL CAPACITY (Tons) 20 25 30

OPERATING WEIGHT (lb)

Base Unit with TXV 730 1050 1062

Plenum 225 325 325

FANS

Qty...Diam. (in.) 2...15 2...18 2...18

Nominal Airflow (cfm) 8000 10000 12000

Airflow Range (cfm) 6000 – 10000 7500 – 12500 9000 – 15000

Nominal Motor Hp (Standard Motor)

208/230---3 --- 60 and 460 ---3--- 60 5.0 7.5 10.0

5 7 5 --- 3 --- 6 0 5.0 7.5 10.0

Motor Speed (rpm)

208/230---3 --- 60 and 460 ---3--- 60 1745 1745 1745

5 7 5 --- 3 --- 6 0 1745 1755 1755

REFRIGERANT R--- 410A

Operating charge (lb)
(approx per circuit)

{

DIRECT---EXPANSION COIL Enhanced Copper Tubes, Aluminum Sine--- Wave Fins

Max Working Pressure (psig) 650

Face Area (sq ft) 19.88 24.86 29.83

No. of Splits 2 2 2

No. of Circuits per Split 18 20 24

Split Type...Percentage Face...50/50

Rows...Fins/in. 4...15 4...15 4...15

PIPING CONNECTIONS,

Quantity...Size (in.)

DX Coil — Suction (ODF) 2...11/

DX Coil — Liquid Refrigerant (ODF) 2...5/

Steam Coil, In (MPT) 1...21/

Steam Coil, Out (MPT) 1...1/

Hot Water Coil, In (MPT) 1...2

Hot Water Coil, Out (MPT) 1...2

Condensate (PVC) 1...11/4ODM/1 IDF

FILTERS Throwaway — Factory Supplied

Quantity...Size (in.)

Access Location Either Side

STEAM COIL

}

Max Working Pressure (psig at 260° F) 20

Tota l F a ce Are a ( s q f t) 13.33 15.0 15.0

Rows...Fins/in. 1...10 1...10 1...10

HOT WATER COIL

}

Max Working Pressure (psig) 150

Tota l F a ce Are a ( s q f t) 13.33 15.0 15.0

Rows...Fins/in. 2...8.5 2...12.5 2...12.5

Water Volume

(gal) 13.9 14.3

(ft3) 1.90

LEGEND

DX — Direct Expansion
TXV — Thermostatic Expansion Valve

{

Units are sh ipped without refrigerant charge.

}

Field installed accessory only.

3.5 4.5 5.0

8

4...16 x 20 x 2

4...16 x 24 x 2

2...13/

8

8

2

2

4...20 x 24 x 2

4...20 x 25 x 2

2...13/

8

40RU

3

40RU

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

UNIT 40RUA* 25 28 30

NOMINAL CAPACITY (kW) 70 87 105

OPERATING WEIGHT (kg)

Base Unit with TXV 331 477 482

Plenum 102 148 148

FANS

Qty...Diam. (mm) 2...381 2...457 2...457

Nominal Airflow (L/s) 3775 4119 5663

Airflow Range (L/s) 2831 – 4719 3539 – 5899 4247 – 7079

Nominal Motor kW (Standard Motor)

208/230---3 --- 60 and 460 ---3--- 60 3.73 5.60 7.46

5 7 5 --- 3 --- 6 0 3.73 5.60 7.46

Motor Speed (r/s)

208/230---3 --- 60 and 460 ---3--- 60 29.1 29.1 29.1

5 7 5 --- 3 --- 6 0 29.1 29.3 29.3

REFRIGERANT R--- 410A

Operating charge (kg)

(approx per circuit)

{

DIRECT---EXPANSION COIL Enhanced Copper Tubes, Aluminum Sine--- Wave Fins

Max Working Pressure (kPag) 4481

Face Area (sq m) 1.85 2.30 2.77

No. of Splits 2 2 2

No. of Circuits per Split 18 20 24

Split Type...Percentage Face...50/50

Rows...Fins/m 4...591 4...591 4...591

PIPING CONNECTIONS,

Quantity...Size (in.)

DX Coil — Suction (ODF) 2...11/

DX Coil — Liquid Refrigerant (ODF) 2...5/

Steam Coil, In (MPT) 1...21/

Steam Coil, Out (MPT) 1...1/

Hot Water Coil, In (MPT) 1...2

Hot Water Coil, Out (MPT) 1...2

Condensate (PVC) 1...11/4ODM/1 IDF

FILTERS Throwaway — Factory Supplied

Quantity...Size (mm.)

Access Location Either Side

STEAM COIL

}

Max Working Pressure (kPag at 126° C) 138

Tota l F a ce Are a ( s q m ) 1.24 1.39 1.39

Rows...Fins/m 1...394 1...394 1...394

HOT WATER COIL

}

Max Working Pressure (kPag) 1034

Tota l F a ce Are a ( s q m ) 1.24 1.39 1.39

Rows...Fins/m 2...335 2...335 2...335

Water Volume

(L) 52.6 54.1

(m3) 0.052 0.054

LEGEND

DX — Direct Expansion
TXV — Thermostatic Expansion Valve

{

Units are sh ipped without refrigerant charge.

}

Field installed accessory only.

1.59 2.04 2.27

8

4...406 x 508 x 51

4...406 x 610 x 51

2...13/

8

8

2

2

4...508 x 610 x 51

4...508 x 635 x 51

2...13/

8

4

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

UNIT 40RUQ* 25

NOMINAL CAPACITY (Tons)

OPERATING WEIGHT (lb)

Base Unit with TXV 720

Plenum 140

FANS

Qty...Diam. (in.) 2...15

Nominal Airflow (cfm) 8000

Airflow Range (cfm) 6000---10000

Nominal Motor Hp (Standard Motor)

208/230---3 --- 60 and 460 ---3--- 60 5.0

5 7 5 --- 3 --- 6 0 5.0

Motor Speed (rpm)

208/230---3 --- 60 and 460 ---3--- 60 1745

5 7 5 --- 3 --- 6 0 1745

REFRIGERANT

Operating charge (lb)
(approx per circuit)

DIRECT---EXPANSION COIL

{

Enhanced Copper Tubes, Aluminum Sine--- Wave Fins

Max Working Pressure (psig) 650

Face Area (sq ft) 19.9

No. of Splits 2

No. of Circuits per Split 2

Split Type...Percentage Face....50/50

Rows...Fins/in. 4...15

PIPING CONNECTIONS,

Quantity...Size (in.)

DX Coil — Suction (ODF) 2...1

DX Coil — Liquid Refrigerant (ODF) 2...

Steam Coil, In (MPT) 1...2

Steam Coil, Out (MPT) 1...1

Hot Water Coil, In (MPT) 1...2

Hot Water Coil, Out (MPT) 1...2

Condensate (PVC) 1...1

FILTERS

Throwaway — Factory Supplied

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

Access Location RightorLeftSide

STEAM COIL

}

Max Working Pressure (psig at 260° F) 20

Tota l F a ce Are a ( s q f t) 13.33

Rows...Fins/in. 1...10

HOT WATER COIL

}

Max Working Pressure (psig) 150

Tota l F a ce Are a ( s q f t) 13.33

Rows...Fins/in. 2...8.5

Water Volume

(gal) 13.9

(ft3) 1.85

LEGEND

DX — Direct Expansion
TXV — Thermostatic Expansion Valve

{

Units are sh ipped without refrigerant charge.

}

Field installed accessory only.

20

R--- 410A

3.5/3.5

1/

5/

8

1/

1/

1/

ODM/1 IDF

4

4...16 x 24 x 2

40RU

8

2

2

5

40RU

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

UNIT 40RUQ* 25

NOMINAL CAPACITY (kW)

OPERATING WEIGHT (kg)

Base Unit with TXV 326

Plenum 44

FANS

Qty...Diam. (mm) 2...381

Nominal Airflow (L/s) 3775

Airflow Range (L/s) 2831--- 4719

Nominal Motor kW (Standard Motor)

208/230---3 --- 60 and 460 ---3--- 60 3.73

5 7 5 --- 3 --- 6 0 3.73

Motor Speed (r/s)

208/230---3 --- 60 and 460 ---3--- 60 29.1

5 7 5 --- 3 --- 6 0 29.1

REFRIGERANT

Operating charge (kg)
(approx per circuit)

DIRECT---EXPANSION COIL

{

Enhanced Copper Tubes, Aluminum Sine--- Wave Fins

Max Working Pressure (kPag) 4482

Face Area (sq m) 1.85

No. of Splits 2

No. of Circuits per Split 2

Split Type...Percentage Face...50/50

Fins/m 591

PIPING CONNECTIONS,

Quantity...Size (in.)

DX Coil — Suction (ODF) 2...1

DX Coil — Liquid Refrigerant (ODF) 2...

Steam Coil, In (MPT) 1...2

Steam Coil, Out (MPT) 1...1

Hot Water Coil, In (MPT) 1...2

Hot Water Coil, Out (MPT) 1...2

Condensate (PVC) 1...1

FILTERS

Throwaway — Factory Supplied

Quantity...Size (mm)

Access Location RightorLeftSide

STEAM COIL

}

Max Working Pressure (kPag at 126° C) 138

Tota l F a ce Are a ( s q m ) 1.24

Rows...Fins/m 1...394

HOT WATER COIL

}

Max Working Pressure (kPag) 1034

Tota l F a ce Are a ( s q m ) 1.24

Rows...Fins/m 2...335

Water Volume

(L) 52.6

(m3) 0.052

LEGEND

DX — Direct Expansion
TXV — Thermostatic Expansion Valve

{

Units are sh ipped without refrigerant charge.

}

Field installed accessory only.

70

R--- 410A

1.59/1.59

1/

5/

8

1/

1/

1/

ODM/1 IDF

4

4...406 x 610 x 51

4...406 x 508 x 51

8

2

2

6

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

UNIT 40RUS* 25 28 30

NOMINAL CAPACITY (Tons) 20 25 30

OPERATING WEIGHT (lb)

Base Unit 683 1035 1042

Plenum 225 325 325

FANS

Qty...Diam. (in.) 2...15 2...18 2...18

Nominal Airflow (cfm) 8000 10000 12000

Airflow Range (cfm) 6000 – 10000 7500 – 12500 9000 – 15000

Nominal Motor Hp (Standard Motor)

208/230---3 --- 60 and 460 ---3--- 60 5.0 7.5 10.0

5 7 5 --- 3 --- 6 0 5.0 7.5 10.0

Motor Speed (rpm)

208/230---3 --- 60 and 460 ---3--- 60 1745 1745 1745

5 7 5 --- 3 --- 6 0 1745 1755 1755

CHILLED WATER COIL Enhanced Copper Tubes, Aluminum Sine--- Wave Fins

Max Working Pressure (psig) 435

Face Area (sq ft) – Upper 11.0 12.4 15.5

Face Area (sq ft) – Lower 8.3 12.4 12.4

Rows...Fins/in. 3...15

PIPING CONNECTIONS,

Quantity...Size (in.)

Chilled Water — In

Chilled Water — Out

Steam Coil, In (MPT) 1...21/

Steam Coil, Out (MPT) 1...11/

.

2...13/8ODM 2...21/8ODM

2...21/8ODM 2...21/8ODM 2...21/8ODM

2

2

Hot Water Coil, In (MPT) 1...2

Hot Water Coil, Out (MPT) 1...2

Condensate (PVC) 1...11/4ODM/1 IDF

FILTERS Throwaway — Factory Supplied

Quantity...Size (in.)

4...16 x 20 x 2

4...16 x 24 x 2

4...20 x 24 x 2

4...20 x 25 x 2

Access Location Either Side

STEAM COIL

}

Max Working Pressure (psig at 260° F) 20

Tota l F a ce Are a ( s q f t) 13.33 15.0 15.0

Rows...Fins/in. 1...10 1...10 1...10

HOT WATER COIL

}

Max Working Pressure (psig) 150

Tota l F a ce Are a ( s q f t) 13.33 15.0 15.0

Rows...Fins/in. 2...8.5 2...12.5 2...12.5

Water Volume

(gal) 13.9 14.3

(ft3) 1.1 1.90

LEGEND

}

Field installed accessory only.

2...21/8ODM

40RU

7

40RU

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

UNIT 40RUS* 25 28 30

NOMINAL CAPACITY (kW) 70 87 105

OPERATING WEIGHT (kg)

Base Unit 310 469 473
Plenum 102 148 148

FANS

Qty...Diam. (mm) 2...381 2...457 2...457
Nominal Airflow (L/s) 3775 4719 5663
Airflow Range (L/s) 2831 – 4719 3539 – 5899 4247 – 7079
Nominal Motor kW (Standard Motor)

208/230---3 --- 60 and 460 ---3--- 60 3.73 5.60 7.46
5 7 5 --- 3 --- 6 0 3.73 5.60 7.46

Motor Speed (r/s)

208/230---3 --- 60 and 460 ---3--- 60 29.1 29.1 29.1
5 7 5 --- 3 --- 6 0 29.1 29.3 29.3

CHILLED WATER COIL Enhanced Copper Tubes, Aluminum Sine--- Wave Fins

Max Working Pressure (kPag) 2999
Face Area (sq m) – Upper 1.02 1.15 1.44
Face Area (sq m) – Lower 0.77 1.15 1.15
Rows...Fins/m 3...591 3...591 3...591

PIPING CONNECTIONS,

Quantity...Size (in.)

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

FILTERS Throwaway — Factory Supplied

Quantity...Size (mm.)

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
Tota l F a ce Are a ( s q m ) 1.24 1.39 1.39
Rows...Fins/m 1...394 1...394 1...394

HOT WATER COIL

}

Max Working Pressure (kPag) 1034
Tota l F a ce Are a ( s q m ) 1.24 1.39 1.39
Rows...Fins/m 2...335 2..493 2...493
Water Volume

(L) 52.6 54.1
(m3) 0.052 0.054

LEGEND

}

Field installed accessory only.

2

2

4...508 x 610 x 51

4...508 x 635 x 51

8

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.

40RU

Fig. 1 -- Dimensions – Size 25

9

UNIT

40RUA*25 730 (331)
40RUQ*25 720 (326)
40RUS*25 683 (310)

UNIT WEIGHT

lb (kg)

C10722

40RU

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.

6. 40RUS may require alternate or additional
field favricated poping access holes

Fig. 2 -- Dimensions – Sizes 28 and 30

10

UNIT

40RUA*28
40RUA*30
40RUS*28
40RUS*30

UNIT WEIGHT

lb (kg)

1050 (477)
1062 (482)
1035 (469)
1042 (473)

C10723

Model Type

40RU = Carrier Fan Coil
Puronr R–410ARefrigerant

Typ e of Co il

A = StandardDXCoil
Q = Heat Pump
S = Chilled Water Coil

Refrigerant Options

A = None

Nominal Tonnage

25 = 20 Tons
28 = 25 Tons
30 = 30 Tons

Not Used

A=PlaceHolder

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

40RUAA25A1A6–0A0A0

_____________ ____

Brand / Packaging

0=Standard

Not Used

A=PlaceHolder

Service Options

0 = Non-Painted Cabinet
1 = Painted Cabinet

Not Used

A=PlaceHolder

Not Used

0=PlaceHolder

Design Rev

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

40RU

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

Fig. 3 -- Model Number Nomenclature

POSITION NUMBER
TYPICAL

12345678910
2610G12345

Fig. 4 -- Serial Number Nomenclature

TXV COIL

Voltage

1 = 575/3/60
5 = 208/ 230/3/60
6 = 460/3/60

Coil Options

A=Al/Cu

C!0724

SETANGISEDNOITISOP

)radnelac lacsif( erutcafunam fo keeW1−2

Year of manufacture (“10” = 2010)3−4

)ASU ,saxeT ,PTE = G( noitacol gnirutcafunaM5

rebmun laitneuqeS6−10

C!0725

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.

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

PLUG

11

CONDENSATE
DRAIN

LEGEND

Accessory Line
Alternate Air Intake and Discharge

Air Intake and Discharge

Note: Maintain recommended clearances

per Fig. 1 and Fig. 2

Fig. 6 -- Typical Unit Positioning

PLUG

C10684

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

OVERHEAD SUSPENSION ACCESSORY — UNIT SIZE 25

40RU

preferred suspension technique. The unit needs support
underneath to prevent sagging.

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

OVERHEAD SUSPENSION ACCESSORY — UNIT SIZES 28, 30

NOTE: Dimensions in [ ] are millimeters

Fig. 7 -- Preferred Suspension Technique

C10728

12