Trane SSC-APG002-EN, XR Series, XR 13, XR 15 Application Manual

Application Guide

Trane XR S tyle Condensing Units and Heat Pumps

SSC-APG002-EN

Low Outdoor Ambient Operation Unit Mounting Minimum Clearances

Trane XR Style Outdoor Models

The purpose of this bulletin is to provide application criteria as related to the Trane XR style condensing units and heat pump units.

This bulletin discusses: I. T erms and definitions II. Off season cooling operation III. Compressor crankcase heat requirements for split heat pump systems. IV . Unit mounting V . Minimum operating clearances VI. Clearance from vents VII. Nameplate electrical data

POSITION ST A TEMENT :

Trane has always recommended installing T rane approved, matched indoor and outdoor systems. The benefits of installing approved matched sytems are maximum efficiency , optimum performance, and best overall system reliability

W arnings and Cautions may appear throughout this manual. Read these carefully .

WARNING – Indicates a potentially hazardous situation which, if not avoided,

could result in death or serious injury.

CAUTION – Indicates a potentially hazardous situation which, if not avoided,

may result in minor or moderate injury. It may also be used to alert against unsafe practices.

CAUTION – Indicates a situation that may result in equipment or property-damage-

only accidents.

ISSUED BY : Product Application Engineering Department Trane a company of Ingersoll Rand T yler, T exas

Section I - T erms and Definitions: Three phase products:

All 2.5 to 5 ton three phase split system cooling units and heat pumps are shipped from the factory with compressor crankcase heat. Three phase compressor do not require start capacitors or start relays.

Definitions and information:

CCHT - Compressor Crankcase Heater, sometimes called a compressor sump heater .

This device is designed to warm the compressor crankcase (or sump) in order to prevent or deter refrigerant migration during the compressor off cycle. Compressor crankcase heaters are required for low ambient cooling operation. TXV - Thermostatic Exp ansion Valve. This is a type of refrigerant flow control device designed to maintain constant superheat throughout the operating envelope. For low ambient cooling applications, a non-bleed TXV is required. Bleed TXV: This type of TXV will allow the refrigerant pressures between the high side and low side to equalize through the valve during the off cycle. Non Bleed TXV: This type of TXV will not allow the refrigerant pressures between the high side and low side to equalize through the valve during the off cycle. When using this type of valve on single phase units with reciprocating style compressors, compressor start components are required. Check product data specifications for most current information. Head pressure controller - A device that is field installed on a condensing unit or heat pump designed to maintain system head pressure that will allow safe system operation without indoor coil icing in colder outdoor ambients. The BAYLOAM*** will cycle the condenser fan motor in order to achieve adequate operating head pressure. The control is adjustable. Evaporator Defrost Control - A device that is field installed on the system’s indoor coil in order to prevent the system from running during the cooling cycle when the indoor coil approaches or reaches a temperature in which frost will form on the coil surface. When the indoor coil approaches a safe temperature for cooling operation, the control will close and allow the outdoor unit to restart. This controller makes and breaks the control voltage to the condensing unit. Quick Start Component - This component may be factory installed or offered as a field installed accessory ( BAYKSKT***). A quick start kit consist of a capacitor with a high microfarad rating and a potential relay. It is installed so that the start capacitor is wired in parallel with the compressor’s run capacitor . Prior to st art-up the potential relay contacts are closed, therefore placing the start capacitor in the compressor circuit, as the compressor motor reaches operating speed, electrical current flows through the potential relay’s coil and the the relay contacts are opened, thus taking the start capacitor out of the system until the next compressor start up.

Section II – Off Season Cooling Operation

55°F - 30°F 55°F - 30°F 55°F - 30°F 55°F - 30°F 30°F - 20°F or 30°F - 0°F see lowest approved OD ambient

Air

Conditioner

Heat Pump

55 deg F. As

Manufactu red

Air

Conditioner

AY28X079 3

Heat Pump AY28X084 3

TXV-NB CCHT

BAYLOAM103 BAYLOAM107

Start Kit

Solenoid

Valve (AC) 4

Windshield

Lowest App roved Outdoor Ambient

Cooling Mode

13 SEER X X X X X BAYLOAM103 X X X Approved to 0 d eg F

14 SEER X X X X X BAYLOAM103 X X X

AC Approved to 20 deg F HP Approved t o 10 deg F

15 SEER X X X X X BAYLOAM103 X X X

AC Approved to 20 deg F HP Approved t o 10 deg F

16 SEER 1 , 2 X X X X X BAYLOAM107 1 X X X

AC Approved to 20 deg F HP Approved t o 10 deg F

17 SEER X X X X X BAYLOAM103 X X X

AC Approved to 20 deg F HP Approved t o 10 deg F

Notes: 1 DO NOT apply BAYLOAM to model t onnages wit h variable speed condenser fan motors 2 Models with VS co ndenser fan motors ar e approved to 30 deg F wit h EDC or air hand ler with EEV 3 AY28X*** EDC not required when indoor unit has EEV 4 Liquid line soleno id shall be used for isolation purposes. Also used if liquid line is 1/2" and located before t he evaporator coil if AC is ab ove ID coil See SS-APG006-EN Refrigeration P iping A pplicatio n Guide

©Trane 2015 Page 4 SSC-APG002-EN

Trane outdoor units may be operated in the cooling mode to 55°F outdoor ambient as shipped from the factory when applied with an indoor TXV. Where required, these units with appropriate accessories may be applied to operate at outdoor temperatures below 55°F.

Unit requires a compressor crankcase heater and start accessory only if it is not factory installed. Compressor Crankcase Heaters: Reciprocating Compressor: BAYCCHT300

Large Scroll Compressor: BAYCCHT301RES Small Scroll Compressor: BAYCCHT302RES

As noted in the above table, systems may be operated lower than 55°F by applying the BAYLOAM103 or BAYLOAM107 and other accessories. The BAYLOAM*** controller cycles the outdoor fan motor as needed to maintain liquid line temperature as set by the DIP switches located on the control. There is no need to change the outdoor motor on approved products since the controller does not vary the frequency to the motor. However the BAYLOAM*** CANNOT be applied to those model tonnages with a variable speed condenser fan motor.

Windshields:

If low ambient cooling operation is required, windshields are a must in order to block prevailing winds from impacting system performance at low outdoor temperatures. Reference figure 1.

Figure 1 - Windshield Construction Information

SHIELD DESIGN FOR HIGHLY DIRECTIONAL WINDS

SERVICE ACCESS AREA SEE NOTES

UNIT

12" MIN.

PREVAILING WIND DIRECTION

SOLID PANEL

UNIT

4" MINIMUM

24" MAXIMUM

SHIELD DESIGNED FOR NON-DIRECTIONAL WINDS

SERVICE ACCESS AREA SEE NOTES

REMOVEABLE PANEL OR GATE FOR SERVICE

2 1/2" MIN.

UNIT

12" MIN.

SHADOW BOX FENCE 33% MIN. FREE AREA EACH SIDE

UNIT

NOTE:

National Electrical Code requires minimum three feet clearance from the service panel. Some local building departments will allow a removeable panel in front of the unit service access area. Otherwise the distance between the windshield and the unit’s service access is required to be a minimum of three feet. Reference page 16 of this document for National Electric Code information

.

2" MINIMUM

4" MAXIMUM

Low ambient cooling utilizing the frost control in GAM5A and T AM4 indoor units:

The T AM4 and T AM7 fan coil units utilize an electronic expansion valve (EEV). W ith this enhancement the controls that monitor the EEV also allow us to take advantage of monitoring coil temperature.

How it works: The on-board electr onic controls include a r elay that will open when the indoor coil begins to fr ost. When this occurs, the contacts to the YO circuit will open and de-energize the outdoor unit, provided figure 2 and 3 are followed. When the YO circuit opens the outdoor unit is taken off line; however,

the indoor blower continues to operate, thus clearing the indoor coil of frost build-up.

Low ambient cooling utilizing thermostatic control found in the A Y28X079 and A Y28X084.

How it works: These controls ar e thermally contr olled contacts with a capillary style sensor. The capillary tube is inserted into the coil fins in between the tube rows. When the sensor detects 25F, the contacts open. The contacts close when the coil temperature reaches 60F. When wired as shown in figures 4 and 5, the outdoor unit is de-energized when the EDC contact opens and re-energizes when the EDC

contact closes.

Typical wiring the frost control located in TAM4 or TAM7 fan coil unit

Figure 2

Cooling split system and T AM4 or T AM7 fan Coil Unit

GAM5 or TAM7 Air handling unit

Cooling

unit

Y

B

*NOTE:

Y2 and BK is present on TAM7 units and not present on GAM5 or TAM4.

W3 W2 W1

BK (see note*) G

Y2 (see note*) YI (in) YO (out

O

R B

Figure 3

Heat pump split system and T AM4 or T AM7 fan coil unit

GAM5 or TAM7 Air handling unit

Thermostat

W

G

Y

R

B

Thermostat

W3

Brown X2

Heat pump

unit

W2 W1

BK (see note*)

X2 W

G

Y2 (see note*)

Y

O

R B

Yellow

Orange

Red

Blue

YI (in) YO (out

O

R B

Warning! High voltage present in the outdoor unit and indoor unit. Assure high voltage power is disconnected using lockout / tag-out procedures if applicable prior to connecting low voltage wiring.

Typical wiring when using the evaporator defrost control (EDC):

Figure 4 -

Single Speed Cooling Split System and AY28X079 Evaporator Defrost Control

Air handling unit

Red (R)

EDC

Cooling

unit

Y

B

Y

Y Low

Green (G)

White (W1)

White (W2)

White (W3)

Blue (B)

Figure 5 -

Single Speed Heat Pump Split System and A Y28X084 Evaporator Defrost Contr ol

R

Y

Thermostat

G

W

B

Air handling unit

R

Y

Thermostat

O

G

W

X2

B

Heat pump

unit

Brown / X2

Red

Yellow

Orange

Blue

EDR-1

EDC

EDR

Red (R)

Y

Y Low

Orange

Green (G)

White (W1)

White (W2)

White (W3)

Blue (B)

Warning! High voltage present in the outdoor unit and indoor unit. Assure high voltage power is disconnected using lockout / tag-out procedures if applicable prior to connecting low voltage wiring.

Section III - Compressor Crankcase Heat Requirements for Split Heat Pumps:

Figure 6 -Climatic Zones for United States

Compressor crankcase heat is required in Climatic Zones 1, 2, and 3 for all heat pump applcations. Refer to the unit product data catalogue for cranckase

heater selection.

Section IV - Unit Mounting:

This section describes appropriate methods for mounting and securing the unit.

However, if these units are to be mounted in a region where high winds are an issue, a Trane BA YECMT*** extreme conditions mounting kit.may be utilized. Otherwise, a local P .E. and restraining method approved by the authority having jurisdiction may be required. In regions where seizmic restraint is a requirement, approval from a local P .E. (professional engineer) may be required for the restraining method. (refer ence figures 7, 8, and 9 for possible mounting configuration

examples)

A. For mounting or securing the Trane condensing units and heat pumps please observe the following:

1. If the unit is to be supported from the edge, the supporting material must

extend two inches

minimum under the perimeter of the unit’s base.

2. The mounting hole locations are molded in the basepan, however, must be drilled through. a) Hole locations are identified in figures 10 and 11.

3. W ashers should be placed in between the fastener head and the basepan.

4. Trane recommends supporting the center of the unit as shown in figures 9, 10, and 1 1.

5. Base size 3 and 4 pans have four mounting holes - see figures 10 and 11.

6. For hurricane or high wind applications, if using the BA YECMT*** kit, the bolt hardness and diameter is specified in the BA YECMT*** installation guide. a) Bolt length is determined by the authority having jursidiction and / or local P .E. b) Mounting surface composition and weight shall be determined by the authority having jurisdiction and / or local P .E. c) For non-ground installations, refer to a local P .E. d) A local P.E. may be required if the BA YECMT*** kit is used or not.

Figure 7

Figure 9Figure 8

Drawings for illustration purposes only ,

BASE P AN MOUNTING HOLE LOCATIONS

( location only , holes must be drilled )

support must extend in 2” from the basepan perimeter

support center of unit

335 (13.19)

221 (8.69)

Drill 4 places

Figure 10 - Base 3

support must extend in 2” from the basepan perimeter

294 (11.56)

171 (6.74)

Drill 4 places

688 (27.08)

580 (22.85)

482 (18.99)

599 (23.58)

Measurements are provided in MM and (Inches)

310 (12.20)

158 (6.24)

Drill 4 places

support center of unit

795 (31.28)

717 (28.24)

317 (12.48)

213 (8.39)

Drill 4 places

599 (23.28)

727 (28.64)

Figure 11 - Base 4

If supporting the base pan from the perimeter, the support must extend under the base pan at least 2”. Trane recommends supporting the middle of the base pan with a cross member.

Section V - Minimum Operating Clearances

This section discusses installating a condensing unit / heat pump where spacing is limited. When installing Trane outdoor units in a location where clearance to other units, walls, fences, etc. is limited, the concerns listed below must be addressed:

1. System Operation - Adequate airflow must be provided to and away from the condensing unit / heat pump in order to enable appropriate heat transfer. If this is accomplished, head pressure will remain within an effective operating range.

2. System Servicability - Sufficient working space must be allowed for the HVAC service technician to properly maintain the condensing unit / heat pump. Furthermore, space must be allowed for major component change out in the event of a failure. W orking space is determined by the Local, State and National Codes. (See National Electric Code T able 110.26 for explanation.)

3. Space Maintenance - Appropriate space must be allowed in order to for personnel to maintain the ground area where the units are positioned to prohibit foliage growth around the unit(s) and debris from collecting on the panels.

3. State, Local Codes, and National Codes shall prevail. Check with the local jurisdiction before installation to assure compliance.

Many projects require consideration of minimum clearances between outdoor units and adjacent walls, fences and other units. The obstruction in question is usually one of the following:

1. One or more walls of an adjacent building.

2. Fences or barriers provided to reduce sound transmission or visually screen the equipment.

3. Other outdoor units in a multi-unit installation.

4. A combination of the above.

5. Overhangs

The prime considerations involved in establishing minimum clearances are:

1. Adequate airflow to the outdoor coil with minimum recirculation.

2. Service access to the equipment.

3. Compliance with the National Electric Code and other applicable codes.

4. Design temperature - Design temperatures greater than 105F require additional consideration.

I. In order to ensure adequate airflow reaches the condensing unit, size free air passages at 300 Feet Per

Minute maximum velocity . See condensing unit airflow performance on page 18 of this document.

II. The importance of providing proper service access to equipment cannot be overemphasized. The

HVAC service technician’s job may be performed with greater ease and lower cost if adequate service space is allowed.

III. Knowledge of the National Electric Code and other applicable codes for the job site location is a

necessity in order to satisfy local inspectors. These codes are in place for serviceability as well as safety .

IV . Be sure to read all provisions and footnotes contained in this document.

V. Where ASHRAE design temperatures exceed 105F , minimum operating clearances may increase.

1. Installation of a single condensing unit / heat pump with one side facing wall, fence, or other obstruction with free air space on top. (See Figur e 12)

A) For locations where the ASHRAE design ambient temperature is below 1 10F:

1) 6.0 inches clearance on 1 side. Three feet minimum clearance required from other three sides from any obstructions.

2) Service access side - 3 feet minimum clearance required. Consult Local, State, and National Electric Codes for minimum service clearance.

B) For locations where the ASHRAE design ambient temperature exceeds 1 10F:

Do not restrict any one side less than 1.0 feet. Refer to the unit’s installation manual or the following pages of this document for more information regarding unit clearances.

Figure 12

-3.0’min

min

-6.0”-

Service Panel

3.0’ min

5 feet minimum unrestricted top clearance shall be provided.

min

3.0’-

2. Installation of a multiple condensing units / heat pump units with one side facing wall, fence, or other obstruction with free air space on top. (See Figur e 13)

A) For locations where the ASHRAE design ambient temperature is below 1 10F:

1) 6.0 inches clearance on 1 side. Three feet minimum clearance required from other three sides from any obstructions.

2) Service access side - 3 feet minimum clearance required. Consult Local, State, and National Electric Codes for minimum service clearance.

B) For locations where the ASHRAE design ambient temperature exceeds 1 10F:

Do not restrict any one side less than 1.0 feet. Refer to the unit’s installation manual or the following pages of this document for more information regarding unit clearances.

min

-6.0”-

-3.0’min

min

-3.0’-

Service Panel

3.0’ min

Figure 13

min

-6.0”-

min

-3.0’-

Service Panel

3.0’ min

-6.0”-

-3.0’-

min

3.0’ min

5 feet minimum unrestricted top clearance shall be provided.

Service Panel

3. Installation of a single unit in a corner with free air space on top. (See Figur e 14)

A) For locations where the design ambient temperature is below 105F:

1) 1.0 feet clearance on 2 sides - If foliage is to be placed by the unit other side, then allow 1.0 Feet minimum clearance from the unit

2) Service access side - 3 feet minimum clearance required. Consult Local, State, and National Electric Codes for minimum service clearance.

B) For locations where the design ambient temperature exceeds 105F:

1) 1.5 feet clearance on 2 walls. - If foliage is to be placed by the unit other side, then allow 1.0 Feet minimum clearance from the unit.

2) Service access side - 3 feet minimum clearance required.

C) If unit is located in such a way that service panel is facing the wall

1) NEC requires 3 feet minimum clearance between the unit and the wall a) This space may be increased to 3 1/2 feet. Consult the National Electric Code for more information regarding minimum clearances for working spaces.

Figure 14

min

-1.0’-

Service

Panel

5 feet minimum unrestricted top

-1.0’min

min

-1.0’-

3.0’ min

clearance shall be provided.

4. Installation of two or more units where two adjacent walls form a corner . (See Figur e 15)

A) For locations where the design ambient temperature is below 105F:

1) Note the unit base size and obtain the minimum clearance values from the table below .

B) For locations where the design ambient temperature exceeds 105F:

1) 2.0 feet clearance from both walls.

2) 3.0 feet clearance in between units, unless service panels face each other . (if service panels face each other, this clearance may be increased to 4 feet per NEC)

C) If unit’s are located with the service panels facing the wall

1) NEC requires minimum 3 feet between the unit and the wall a) This space may be increased to 3 1/2 feet. Consult the most current edition of the National Electric Code for more information regarding minimum clearances for working spaces.

2B indicates to multiply the B dimension from Table 3 by 2.

Figure 15

A

A 2B

A

2B

SERVICE ACCESS PANEL SIDE

requires 3’ minimum clearance

A

Table 3 - Minimum Clearances

Base

Size

3 4

A B

1.2' 1.2' 36"

1.5' 1.4' 36"

Clearance

Service

5 feet minimum unrestricted top clearance shall be provided.

5. Units surrounded on all four sides: (See Figure 16, 17, 18, 19 and 20)

3

6

A. If installed unit(s) is / are surrounded by 2 walls and a solid fence, fence height on two sides shall be no higher than the height of the unit. In this application knockouts or louvers shall be provided on two sides minimum with free area to provide maximum 300 FPM velocity . Cutting a portion of the lower fence on two sides to accomplish 300 FPM maximum velocity is acceptable provided debris, dirt, and grass is prohibited from accumulating or growing to obstruct the opening. Refer to page 19 of this document for outdoor unit airflow . Please refer to table below for minimum clearances.

Figure 16 Figure 17

A

5 feet minimum top clearance

A

Service Clearance*

A

shall be provided.

A

Figure 18

A

2B

* If removable panels are used and acceptable to local inspection agency, the clearance to the removable panel may be reduced to (1.5 X the A dimension from Table 3)

A

2B

Service Clearance*

AA

2B

A

Service

Clearance*

These clearances apply in geographical locations in which the ASHRAE design outdoor dry bulb = 105F or less.

2

Figure 19

Unit

location

SIngle Unit - Solid Fence

Solid Fence: If fence height is taller than unit(s), provide openings in fence that will provide maximum 300 FPM air velocity. These openings shall be located at the lower portion

of the fence. If acceptable, the fence may be raised to provide open bottom clearance of fence height above the unit.

opening size @ 300 FPM maximum velocity

2

Unit

location

Figure 20

Unit

location

2345

Multiple Units Solid Fence

Table 3 - Minimum C learances

Base

Size

3 4

A B

1.2' 1.2' 36"

1.5' 1.4' 36"

Service

Clearance

6. Installation of multiple units on a pad / rooftop where the top clearance is open. (See Figure 21)

A) Refer to minimum clearance table in the lower corner of this page for clearances B) National Electric Code requires 3 feet minimum (4 feet if certain conditions are present) clearance between service access panel and adjacent unit.

If service access panel faces the wall, the required space between the the wall and the unit shall be minimum 3 feet. (May require as much as 3 1/2 feet) C) W alls shall not be higher than top of units. D) National, State, and Local Codes must be observed. E) If design outdoor dry bulb exceeds 105F (40.6C) add 1.0 Ft. to all dimensions.

Figure 21

A

min**

A

min**

A

min**

2B

min

Service Access *

min

-3.0’-

Service Access * Service Access * Service Access *

2B

min

3.0’

min

Service Access *

A

min**

min

-3.0’-

3.0’

min

2B

min

Service Access *

2B

min

Service Access *

A

min**

min

-3.0’-

3.0’

min

The measurement 2B indicates to multiply the dimension B from table 3 by 2 in order to determine the appropriate minimum distance between units.

A

min**

A

min**

* Units may be rotated in order that service access sides face each other provided that 3 feet minimum clearance is maintained between the units. In order to comply with NEC, this may increase to 4 feet minimum clearance. ** If wall or fence is to be constructed around the entire perimeter of the mechanical yard, Maintain minimum 1.5 feet clearance from the units. The fence height shall not exceed that of the unit. It is recommended to install louvers in the fence to allow no greater than 300 feet per minute velocity. Consult table 6 for unit airflow. Place louvers in the lower section of the fence by each unit in order to provide air access to each unit located by the fence. The lower portion of the fence may also be cut in order to equal the calculated free area.

2B

min

A

min**

2B

min

A

min**

Table 3 - Minimum Clearances

Base

Size

3 4

A B

Clearance

1.2' 1.2' 36"

1.5' 1.4' 36"

Servic e

3

8

0

9

0

9

7. Installation of multiple units on raised rooftop rail where the top clearance and side clearance is open. (See Figure 22)

A) Area between outdoor units shall be open in order than air may be drawn from top, bottom and sides. B) Decorative walls shall be at minumum 10 feet away from the outdoor units. C) Decorative walls shall not extend above the unit tops. A) National Electric Code requires 3 feet minimum (4 feet if certain conditions are present) clearance between service access panel and adjacent unit. D) National, State, and Local Codes shall be observed. E) If design outdoor dry bulb exceeds 95F (35.0C) add 1.0 Ft. to all dimensions.

23456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567

2345678

6.0” min

Service Access *

min

-3.0’-

Area shall be open between units

Service Access *

23456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567

23456789

6.0” min

Photo for illustration purposes - area between units open for air to draw from top, bottom, and sides.

2

23456789

2

23456789

2

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2

23456789

2

23456789

2

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2

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2

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2

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2

Service Access *

2

Service Access *

2

23456789

2

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2

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2

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2

23456789

2

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2

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2

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2

min

-3.0’-

Figure 22

36.0” min

2

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2

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2

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2

23456789

2

23456789

2

23456789

2

23456789

2

23456789

2

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2

Service Access *

2

Service Access *

2

23456789

2

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2

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2

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2

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2

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2

23456789

2

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2

min

-3.0’-

2

2345678

2

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2

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2

2345678

2

6.0”

2

2345678

2

min

2

2345678

2

2345678

2

2345678

2

Service Access *

2

Service Access *

2

23456789

2

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2

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2

6.0”

2

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2

min

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2

min

-3.0’-

2

Electrical Code Information

Compliance with Local, State, and National Codes is a must on every HVAC Installation. This page discusses the criteria regarding minimum working spaces as defined in the 2007 National Electric Code. The main concern is the safety of the HV AC service / maintenance person. Minimum working clearances are specified in the National Electric Code (NEC) Article 1 10.26

For electrical equipment that from ground to power the voltage is 600 volts or less:

The National Electric Code specifically states that service area around electrical equipment shall provide sufficient access, and shall be properly maintained in order to permit safe operation and maintenance of the equipment. Figure 22 includes T able 110.26 from the National Electrical Code as well as Condition 1, 2, and 3 beside table 110.26. Conditions 1, 2, and 3 describe the minimum clearance for proper service and access to electrical equipment.

Trane residential and light commercial condensing units ranging from 1 to 6 ton require access to the side service panel as indicated on the previous pages as well those listed in Condition 1, 2, or 3 to gain access to the electrical controls.

Figure 23

The table and figure below are excerpts from the National Electric Code:

Table 110.26(A)(1) Working Clearances

Nominal

Voltage to

Ground

0-150 900 mm (3 FT) 900 mm (3 FT) 900 mm (3FT)

151-600 900 mm (3FT) 1 M (3.5FT) 1.2 mm (4FT)

Note: Where the conditions are as follows Condition 1 - Exposed live parts on one side and no live or grounded parts on the other side of the working space, or exposed live parts on both sides effectively guarded by suitable wood or other insulating materials. Insulated wire or insulated busbars operating at not over 300 volts to ground shall not be considered live parts Condition 2 - Exposed live parts on one side and grounded parts on the other side. Concrete, brick, or tile walls shall be considered as grounded. Condition 3 - Exposed live parts on both sides of the work space (not guarded as provided in Condition 1) with the operator between.

Reprinted with permission from NFPA 70-2014, National Electrical Code®, Copyright © 2013, National Fire Protection Association. This reprinted material is not the complete and official position of the NFPA on the referenced subject, which is represented only by the standard of it’s entirety. National Electrical Code and NEC are registered trademarks of the National

Fire Protection Association, Quincy, MA.

Condition 1 Condition 2 Condition 3

Minimum Clear Distance

Condition 1

(3 ft min. for 151 - 600 V)

Condition 2

(Space would increase to 3 1/2 ft for 151 - 600 V)

Condition 3

(Space would increase to 4 ft for 151 - 600 V)

Section VI - Minimum Clearances From Vents: (See Figure 24)

This section deals specifically with installations in which a dryer vent, kitchen exhaust vent, or furnace vent is located near the condensing unit / heat pump unit.

A. Condensing units and heat pumps shall be located not less than five feet from clothes dryer

vents.

1. Do not locate the condensing unit / heat pump unit directly below a clothes dryer vent.

B. Condensing units and heat pumps units shall be located not less than three from any kitchen

exhaust vent.

1. Do not locate the condensing directly under a kitchen exhaust vent.

C. Condensing units and heat pump unit shall be located not less than three feet vertically from

any natural gas appliance vent outlet or inlet in which the condensing unit / heat pump unit is within a 10 feet diameter of the appliance vent termination.

Gutter or other acceptable means to prohibit direct contact by roof run-off water may be utilized if clearance is not available from building structure.

Figure 24

Kitchen Exhaust Vent

3’

5’

3’

Furnace Vent

10’

Dryer Vent

5’

D. Code Compliance:

1. Local, State and National codes shall be adhered to for all installations.

E. Manufacturers Instructions:

1. Always consult the manufacturers instructional manuals. These manuals contain information specific to the device or appliance being installed.

F. V ents other than discussed in this document:

1. The intent of this document is not to discuss every possible venting device nor all types of gasses, vapors, and spaces that are mechanically vented or naturally vented by draft. Please consult local, state and national codes. In the absence of codes, or if the installer is unfamiliar with local, state and national codes, a professional engineer or local building department should be utilized as a resource.

O u td o o r U n I t A I r f l o w

Unit Model Number CFM Unit Model Number CFM Unit Model Number CFM Unit Model Number CFM

4TTR3018H1000A 2450 4TWR3018D1000A 2690 4TTR4018L1000A 2450 4TWR4018D1000A 3150 4TTR3024H1000A 2450 4TWR3024D1000A 2690 4TTR4024L1000A 2450 4TWR4024D1000A 2640 4TTR3030G1000A 2745 4TWR3030C1000A 2835 4TTR4025L1000A 2450 4TWR4030D1000A 4360 4TTR3036G1000A 2805 4TWR3036C1000A 4385 4TTR4030L1000A 2800 4TWR4036D1000A 4385 4TTR3042D1000A 4171 4TWR3042B1000A 4385 4TTR4031L1000A 2800 4TWR4042D1000A 4540 4TTR3048D1000A 3969 4TWR3048B1000A 4702 4TTR4036L1000A 2805 4TWR4048D1000A 4600 4TTR3060D1000A 4342 4TWR3060B1000A 4748 4TTR4037L1000A 2805 4TWR4060D1000A 4730

4TTR4042L1000A 4171

Unit Model Number CFM 4TTR4043L1000A 4171

4TTR4048L1000A 3970 4TWR5018G1000A 2800 4TTR4060L1000A 4340 4TWR5024G1000A 2650 4TWR5030G1000A 4370 4TWR5036G1000A 4330 4TWR5042G1000A 4075 4TWR5049E1000A 4240 4TWR5061E1000A 4750

Unit Model Number CFM Unit Model Number CFM Unit Model Number CFM Unit Model Number CFM

4TTR6018B1000A 2670 4TWR6024H1000A 2850 4TTR7024A1000A 3200 4TWR7024A1000A 3200 4TTR6024B1000A 2690 4TWR6030H1000A 3731 4TTR7036A1000A 3700 4TWR7036A1000A 3200 4TTR6030B1000A 4280 4TWR6036H1000A 4275 4TTR7048A1000A 4260 4TWR7048A1000A 4260 4TTR6036B1000A 4420 4TWR6042H1000A 4171 4TTR7060A1000A 4760 4TWR7060A1000A 4760 4TTR6042B1000A 4420 4TWR6048H1000A 4454 4TTR6048B1000A 4600 4TWR6060H1000A 4992 4TTR6049B1000A 4240 4TTR6061C1000A 5400

Required Opening = CFM / 300 FPM

Example:

Given:

Quantity of 4 units in a mechanical yard, surrounded by a fence. Units are 4TTR6042B1000A Required: Determine free air opening space required in fence.

Solution:

4420 CFM x 4 units = 17,680 CFM 17,680 CFM / 300 FPM = 58.93 (59) square feet of free air opening in the fence sections surrounding the mechanical yard.

VII. Nameplate Electrical Data

Figure 25

Figure for reference only

Voltage Range -Units are tested @ 10% below the lowest rated voltage and 10% above the highest rated voltage. Ph - 1 for single phase, 3 denotes three phase Hz - Frequency

Minimum Circuit Ampacity - the lowest current in which the branch circuit conductor shall be rated. Reference National Electrical Code, local electrician or local building authority for assistance with wire sizing. (reference NEC Article

440.35) Minimum Fuse / Breaker (HACR) - if this marking is present on the nameplate indicates the lowest rated overcurrent branch circuit protection device allowed for the appliance. (reference NEC Article 440.22)

Maximum Fuse / Breaker (HACR) - the largest rated overcurrent branch circuit protection device allowed for the appliance.

Please note that all installatons shall comply to the codes adopted by the authority having jursidiction. Questions regarding adopted codes should be directed to the local building department prior to installation. Articles from the National Electric Code include but are not limited to: Article 210 - Branch Circuits Article 240 - Overcurrent Protection Article 310 - Conductors for General Wiring Article 422 - Appliances Article 424 - Fixed Electric Space Heating Equipment Article 430 - Motors, Motor Circuits, and Controllers Article 440 - Air Conditioning and Refrigerating Equipment

Trane

6200 Troup Highway Tyler, TX 75707 http://www.trane.com

Literature Order Number File Number SSC-APG002-EN 05/01/2015 Supersedes SSC-APG002-EN 12/27/2013 Stocking Location

Since Trane has a policy of continuous pr oduct improvement, it reserves the right to change design and specifications without notice. © Trane 201

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