Trane GRAA Bedienungsanleitung

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Roof Curb for

Indirect Fired

Gas Heating Products

Since the Trane Company has a policy of continuous product improvement, it reserves the right to change specifications

and design without notice. The installation and servicing of the equipment referred to in this booklet should be done by

qualified, experienced technicians.

Library Service Literature

Product Section Air Handling

Product Make-Up Air

Model GRAA

Literature Type Installation

Sequence 1

Date December 1996

File No. SV-AH-MUA-GRAA-IN-1-1296

Supersedes New

Installation GRAA-IN-1

© American Standard Company 1996

Models:

GRAA, GRBA, GRCA, GRDA, GREA, GRGA

WARNING

This manual, including the warnings and cautions inside, must be carefully read

and followed by all persons who use or maintain this product, including those who

have any responsibility involving its selection, application, service or repair. This

unit will perform as designed only if used and maintained according to the

instructions. Otherwise, it could fail to perform as designed and persons who rely

on this product could sustain serious personal injury or death.

Page Description

3 General Information

3 Receiving Instructions

3 Literature Change History

3 Warnings and Cautions

4 Arrangements B (10-80),

C (10-40), D (10-80),

E (10-40), G (20-40)

9 Arrangements C (50-80),

E (50-80), G (50-12), J (20-12),

K (10-80), L (10-80)

14 Ductwork Connection

Note: Digit 14 in the Model

Number determines the

arrangement of the unit.

Table of

Contents

Arrangement Unit Size Dimensional

Data Roof

Opening Roof Curb

Assembly Curb

Spec’s. Ductwork

Connection

B = Blower (Standard) 10-40 Page 4 Page 5 Page 6 Page 8

Page 14

50-80 Page 4 Page 5 Page 6 Page 8

C = Blower (Standard)

Plenum 10-40 Page 4 Page 5 Page 6 Page 8

50-80 Page 9 Page 10 Page 11 Page 13

D = Blower (Standard)

Evaporative Cooler 10-40 Page 4 Page 5 Page 6 Page 8

50-80 Page 4 Page 5 Page 6 Page 8

E = Blower (Standard)

Evaporative Cooler/Plenum 10-40 Page 4 Page 5 Page 6 Page 8

50-80 Page 9 Page 10 Page 11 Page 13

G = Blower (High CFM) 20-40 Page 4 Page 5 Page 6 Page 8

50-80 Page 9 Page 10 Page 11 Page 13

12 Page 9 Page 10 Page 11 Page 13

J = Blower (High CFM)

Plenum

20-40 Page 9 Page 10 Page 11 Page 13

50-80 Page 9 Page 10 Page 11 Page 13

12 Page 9 Page 10 Page 11 Page 13

K = Blower (High CFM)

Cooling 10-40 Page 9 Page 10 Page 11 Page 13

50-80 Page 9 Page 10 Page 11 Page 13

L = Blower (High CFM)

Cooling / Plenum 10-40 Page 9 Page 10 Page 11 Page 13

50-80 Page 9 Page 10 Page 11 Page 13

2GRAA-IN-1

Attention

Read these instructions carefully

prior to installing this equipment.

Check all specifications and make

sure the appropriate equipment is

being installed.

Retain this manual for future

reference!

WARNING!

Improper installation,

adjustment, alteration, service or

maintenance can cause property

damage, injury or death. Read

the installation instructions

thoroughly before installing or

servicing this equipment.

Receiving Instructions

Inspect the shipment immediately

when received to determine if any

damage has occurred to the unit

during shipment. After the Roof

Curb has been unpacked, check

for any visible damage to the parts.

If any damage is found, the

consignee should sign the bill of

lading indicating such damage and

immediately file claim for the

damage with the transportation

company.

Literature Change History

GRAA-IN-1 (December 1996)

Original installation manual for roof

curb.

Warnings and Cautions

Warnings and cautions appear at

appropriate intervals throughout

this manual.

Warnings!

alert the equipment rigger,

owner/operator and service

personnel to potential hazards

that could result in personal

injury or death.

Cautions:

are provided to alert personnel

to conditions that may result in

equipment or property damage.

General

Information

GRAA-IN-1 3

Roof Curbs for arrangements D

and E include an evaporative

cooler platform. See GRAA-IN-2.

Roof Curbs ship knocked down for

ease of handling and storage. The

field assembly and mounting of the

curb to the roof is the responsibility

of the installer. All curbs ship

complete with pre-assembled side

and end rails, cross member

supports, ductwork connector

brackets, hardware, optional

insulation and gasketing. See

Figures 3, 17, and 18 for a

complete parts list for your curb.

Check to see that all components

are included. Refer to Figures 3, 4,

5, 6, 17, and 18 to see if all other

field supplied parts are also on

hand.

Provide a suitable opening, or two

openings, in the roof as suggested

per Figures 2 & 4. These return

and/or supply air ductwork open-

ings have been calculated to in-

clude a one inch clearance on

each side of the ductwork. The in-

staller may determine other open-

ing(s) to accept return and/or

supply air ducts to suit particular

needs.

Figure 1 - Dimensions

Capacity W+ B+

10,15 26-7/16 (672) 30-3/16 (767)

20,25,50 37-7/16 (951) 41-3/16 (1046)

30,35,60,70 48-7/16 (1230) 52-3/16 (605)

40,80 53-15/16 (1370) 57-11/16 (1465)

Approximate Roof Curb Weights

* R A Capacity 10,15 20,25,50 30,35,60,70 40,80

B 10 thru 40 115 133 151 161

D 10 thru 40 145 163 181 191

B

C50 thru 80

10 thru 40 150 168 186 196

D

E50 thru 80

10 thru 40 180 198 216 226

G 20 thru 40 NA 179 197 207

* R A Capacity F+ H+ J+

B 10 thru 40 29-5/8

(752) 71-1/8

(1807) 67-3/8

(1711)

D 10 thru 40 29-5/8

(752) 71-1/8

(1807) 67-3/8

(1711)

B

C50 thru 80

10 thru 40 29-5/8

(752) 97-1/8

(2467) 93-3/8

(2372)

D

E50 thru 80

10 thru 40 29-5/8

(752) 97-1/8

(2467) 93-3/8

(2372)

G 20 thru 40 37-3/16

(945) 107-5/16

(2726) 103-9/16

(2630)

Notes:

* RA = Rooftop Arrangement

+ Dimensions are in inches.

(Dimensions in parenthesis are in millimeters.)

1 lb. = 0.453 kg

NA = Not Applicable

Dimensional Data

Arrangement Capacity

B 10-80

C 10-40

D 10-80

E 10-40

G 20-40

4GRAA-IN-1

WARNING!

To avoid any property damage

or personal injury, it is the

installer’s responsibility to make

sure that the installation will not

impair the function of this curb,

or the unit to be installed.

All curbs must be mounted on level

areas. The roof must be suitable

to support the weight of both the

curb and the unit to be mounted.

The enclosed area of the roof curb

must comply to required

clearances to combustible

materials. If the roof construction

is made of combustible materials,

the enclosed roof curb area must

meet the following requirements:

1. Ventilate this area.

2. Leave area open (however, this

may elevate higher sound

levels).

3. Cover this area with

non-combustible material,

which utilizes an “R” value of

5.0 minimum.

Position and assemble the curb,

referring to Figures 1 thru 8, 17 and

18 and the following procedure:

1. All hardware used for these

assembly procedures is

included with your curb, and

should be used. Do not tighten

any hardware until the curb is

completely level and square,

and installed in a suitable

position on the roof, with proper

alignment to the roof/unit

opening(s).

2. Position and install the end and

side curb rail sub-assemblies,

aligning around the roof

opening location(s).

3. Position and install the inner

cross brace(s) and ductwork

brackets as shown.

4. Secure the roof curb to the roof

decking.

5. Install the field supplied

flashing/ materials.

6. Apply the gasketing (included

with the kit) on the top flanges/

surfaces of the curb as shown.

WARNING!

To avoid any property damage

or personal injury, it is the

installer’s responsibility that the

roof curb and unit must be

completely sealed, preventing

any water or air leakage/damage.

* Dimension “A” applies to the distance between roof openings

(only on units with a supply plenum: also refer to Figure 4).

Refer to Figure 4 for Section X-X and Y-Y details.

RA* = Rooftop Arrangement

Figure 2 - Roof Opening Specifications

Capacity Dimension

E * (mm)

10/15 26"

(660)

20/25/50 37"

(940)

30/35/60/70 48"

(1219)

40/80 53-1/2"

(1359)

Supply

Air

Opening

Return

Air

Opening

E*

A*

Section

Y-Y

Section

X-X

20-7/8"

(530mm) 20-7/8"

(530mm)

RA * Capacity A ** (mm)

C 10 thru 40 50-7/8 " (1292)

E 10 thru 40 50-7/8" (1292)

Note: All roof opening dimensions shown have been calculated to

include one inch (25mm) clearance on each side of the ductwork

openings.

GRAA-IN-1 5

Figure 3 - Roof Curb Assembly *

* The roof curb and destined unit must be sealed completely to prevent any water or air leakages (also see Figure 8).

Refer to Figures 17 and 18 for Ductwork Mounting Bracket Assembly.

1Curb Rail Assembly—Side

2Curb Rail Assembly—End

3Cross Brace—Curb

4Bolt—3/8-16 x 1" LG. Hex Hd.

(8) Req’d.

53/8-16 x 1" LG. Hex Nyloc Nut

(8) Req’d.

61/4-14 x 5/8 LG. Hex Washer

Hd. Sheet Metal Screw Type

“AB” (8) Req’d.

7Screw—#10 x 5/8" LG. Pan

Hd. Type “AB” (8) Req’d.

8Gasket

6GRAA-IN-1

Figure 4 - Roof Curb Application (Also refer to Figures 2, 5 and 6)

Section X - X

Section Y - Y

Figure 5 - Detail D

RA* Capacity B+

C, E 10 thru 40 18-7/8

(479)

C, E 50 thru 80 19-3/8

(492)

Figure 6 - Detail E

Notes:

RA* = Rooftop Arrangement

+ Dimensions are in inches.

(Dimensions in parenthesis are in millimeters.)

1 lb. = 0.453 kg

NA = Not Applicable

GRAA-IN-1 7

Figure 8 - Unit/Curb Rail Assembly

Figure 7 - Curb Specifications

For Field Installations: These

Cross Brace/Curb Adapters (two

adapters ship with each rooftop

unit) must be repositioned when

the unit is mounted on a curb or

platform (one for each end). Simply

remove the screws, turn the piece

over (end for end) and secure in

place using the holes/hardware

provided. All joints and seams

must be sealed completely to

prevent leaks.

8GRAA-IN-1

Roof Curbs for arrangements D

and E include an evaporative

cooler platform. See GRAA-IN-2.

Roof Curbs ship knocked down for

ease of handling and storage. The

field assembly and mounting of the

curb to the roof is the responsibility

of the installer. All curbs ship

complete with pre-assembled side

and end rails, cross member

supports, ductwork connector

brackets, hardware, insulation and

gasketing. See Figures 11, 17, and

18 for a complete parts list for your

curb. Check to see that all

components are included. Refer to

Figures 11 thru 18 to see if all

other field supplied parts are also

on hand.

Provide a suitable opening, or two

openings, in the roof as suggested

per Figures 10 and 12. These

return and/or supply air ductwork

openings have been calculated to

include a one inch clearance on

each side of the ductwork. The

installer may determine other

opening(s) to accept return and/or

supply air ducts to suit particular

needs.

Figure 9 - Dimensions

Capacity W+ B+

10,15 26-7/16 (672) 30-3/16 (767)

20,25,50 37-7/16 (951) 41-3/16 (1046)

30,35,60,70 48-7/16 (1230) 52-3/16 (605)

40,80,12 53-15/16 (1370) 57-11/16 (1465)

Approximate Roof Curb Weights

RA* Capacity 10,15 20,25,50 30,35,60,70 40,80,12

G

J

K

50 thru 80

20 thru 40

10 thru 40 192 210 228 238

C 50 thru 80 NA 197 217 227

E 50 thru 80 NA 227 247 257

G

J & K

L

12

50 thru 80

10 thru 40 310 338 366 381

J

L12

50 thru 80 NA 375 403 418

RA* Capacity F+ H+ J+

G

J

K

50 thru 80

20 thru 40

10 thru 40

37-1/8

(943) 133-1/4

(3385) 129-1/2

(3289)

C50 thru 80 30-7/8

(765) 123

(3124) 119-1/4

(3029)

E

G

J & K

L

12

50 thru 80

10 thru 40

37-5/16

(948) 159-5/16

(4046) 155-9/16

(3951)

J

L12

50 thru 80 36-15/16

(938) 185-5/16

(4707) 181-9/16

(4612)

Notes:

RA* = Rooftop Arrangement

+ Dimensions are in inches.

(Dimensions in parenthesis are in millimeters.)

1 lb. = 0.453 kg

NA = Not Applicable

Dimensional Data

Arrangement Capacity

C 50-80

E 50-80

G 50-12

J 20-12

K 10-80

L 10-80

GRAA-IN-1 9

WARNING!

Improper installation,

adjustment, alteration, service or

maintenance can cause property

damage, injury or death. Read

the installation instructions

thoroughly before installing or

servicing this equipment.

WARNING!

To avoid any property damage

or personal injury, it is the

installer’s responsibility to make

sure that the installation will not

impair the function of this curb,

or the unit to be installed.

All curbs must be mounted on level

areas. The roof must be suitable

to support the weight of both the

curb and the unit to be mounted.

The enclosed area of the roof curb

must comply to required

clearances to combustible

materials. If the roof construction

is made of combustible materials,

the enclosed roof curb area must

meet the following requirements:

1. Ventilate this area;

2. Leave area open (however, this

may elevate higher sound

levels);

3. Cover this area with

non-combustible material,

which utilizes an “R” value of

5.0 minimum.

Position and assemble the curb,

referring to Figures 9 through 18,

and the following procedure:

1. All hardware used for these

assembly procedures is

included with your curb, and

should be used. Do not tighten

any hardware until the curb is

completely level and square,

and installed in a suitable

position on the roof, with proper

alignment to the roof/unit

opening(s).

2. Position and install the end and

side curb rail sub-assemblies,

aligning around the roof

opening location(s).

3. Position and install the inner

cross brace(s) and ductwork

brackets as shown.

4. Secure the roof curb to the roof

decking.

5. Install the field supplied

flashing/ materials.

6. Apply the gasketing (included

with the kit) on the top

flanges/surfaces of the curb as

shown.

WARNING!

To avoid any property damage

or personal injury, it is the

installer’s responsibility that the

roof curb and unit must be

completely sealed, preventing

any water or air leakage/damage.

* RA = Rooftop Arrangement

** Dimension “A” applies to the distance between

roof openings (only on units with a supply

plenum: also refer to Figure 12).

Refer to Figure 12 for Section X-X and Y-Y

details.

Figure 10 - Roof Opening

Specifications

Capacity Dimension

E * (mm)

10/15 26"

(660)

20/25/50 37"

(940)

30/35/60/70 48"

(1219)

40/80/12 53-1/2"

(1359)

*All roof opening dimensions shown have

been calculated to include a one inch

clearance on each side of the ductwork

opening.

Supply

Air

Opening

Return

Air

Opening

E*

A*

Section

Y-Y

Section

X-X

20-7/8"

(530mm) 20-7/8"

(530mm)

RA * Capacity A ** (mm)

J 20 thru 40 87-1/16 "

(2211)

C & E 50 thru 80 76-7/8" (1952)

J

L50 thru 80

10 thru 40 113"

(2871)

J

L12

50 thru 80 139"

(3531)

10 GRAA-IN-1