Trane GRAA Installation, Operation And Maintenance Manual
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Trane GRAA Installation, Operation And Maintenance Manual

Trane GRAA Installation, Operation And Maintenance Manual

For heating, cooling and ventilating systems
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See also: Installation Manual
Installation, Operation,
and Maintenance
Packaged Rooftop Arrangements
For Heating, Cooling and Ventilating Systems
M M o o d d e e l l N N u u m m b b e e r r s s : :
GRAA
GRDA
GRBA
AHAA
GRCA
AHBA
Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating, and
air-conditioning equipment can be hazardous and requires specific knowledge and training. Improperly installed, adjusted or altered
equipment by an unqualified person could result in death or serious injury. When working on the equipment, observe all precautions in the
literature and on the tags, stickers, and labels that are attached to the equipment.
May 2017
S S A A F F E E T T Y Y W W A A R R N N I I N N G G
M M U U A A - - S S V V X X 0 0 0 0 3 3 B B - - E E N N

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  • Page 1 Maintenance Packaged Rooftop Arrangements For Heating, Cooling and Ventilating Systems M M o o d d e e l l N N u u m m b b e e r r s s : : GRAA GRDA GRBA AHAA...
  • Page 2 CFCs and HCFCs such as saturated or unsaturated HFCs and HCFCs. Important Responsible Refrigerant Practices Trane believes that responsible refrigerant practices are important to the environment, our customers, and the air conditioning industry. All technicians who handle refrigerants must be certified.
  • Page 3 S S t t a a t t e e o o f f C C a a l l i i f f o o r r n n i i a a t t o o c c a a u u s s e e c c a a n n c c e e r r t t h h r r o o u u g g h h i i n n h h a a l l a a t t i i o o n n . . Copyright This document and the information in it are the property of Trane, and may not be used or reproduced in whole or in part without written permission. Trane reserves the right to revise this publication at any time, and to make changes to its content without obligation to notify any person of such revision or change.

  • Page 4: Table Of Contents

    Table of Contents Receiving Instructions ............6 Pre-Installation Instructions.
  • Page 5 T T a a b b l l e e o o f f C C o o n n t t e e n n t t s s Troubleshooting ............. . 42 Troubleshooting Guide —...

  • Page 6: Receiving Instructions

    Receiving Instructions Inspect shipment immediately when received to determine if any damage has occurred to the crate during shipment. After the unit has been uncrated, check for any visible damage to the unit. Check motor position and turn blower wheel to determine if damage has occurred to these critical parts. If any damage is found, the cosignee should sign the bill of lading indicating such damage and immediately file claim for damage with transportation company.

  • Page 7: General Safety Requirements

    General Safety Requirements W W A A R R N N I I N N G G H H a a z z a a r r d d o o u u s s S S e e r r v v i i c c e e P P r r o o c c e e d d u u r r e e s s ! ! F F a a i i l l u u r r e e t t o o f f o o l l l l o o w w a a l l l l p p r r e e c c a a u u t t i i o o n n s s i i n n t t h h i i s s m m a a n n u u a a l l a a n n d d o o n n t t h h e e t t a a g g s s , , s s t t i i c c k k e e r r s s , , a a n n d d l l a a b b e e l l s s c c o o u u l l d d r r e e s s u u l l t t i i n n d d e e a a t t h h o o r r s s e e r r i i o o u u s s i i n n j j u u r r y y .
  • Page 8 G G e e n n e e r r a a l l S S a a f f e e t t y y R R e e q q u u i i r r e e m m e e n n t t s s connections should be made and leak-tested by a suitably qualified individual, per instructions in this manual.

  • Page 9: Rigging

    G G e e n n e e r r a a l l S S a a f f e e t t y y R R e e q q u u i i r r e e m m e e n n t t s s •...

  • Page 10: Combustion Air Considerations

    G G e e n n e e r r a a l l S S a a f f e e t t y y R R e e q q u u i i r r e e m m e e n n t t s s Figure 1.
  • Page 11 G G e e n n e e r r a a l l S S a a f f e e t t y y R R e e q q u u i i r r e e m m e e n n t t s s Refer to Figure 2, p.

  • Page 12: Mounting/Locations

    G G e e n n e e r r a a l l S S a a f f e e t t y y R R e e q q u u i i r r e e m m e e n n t t s s Mounting/Locations These units are suitable for installation on combustible flooring.

  • Page 13: Installation

    Installation W W A A R R N N I I N N G G H H a a z z a a r r d d o o u u s s V V o o l l t t a a g g e e ! ! F F a a i i l l u u r r e e t t o o d d i i s s c c o o n n n n e e c c t t p p o o w w e e r r b b e e f f o o r r e e s s e e r r v v i i c c i i n n g g c c o o u u l l d d r r e e s s u u l l t t i i n n d d e e a a t t h h o o r r s s e e r r i i o o u u s s i i n n j j u u r r y y .

  • Page 14: Mounting On Roof Curb

    I I n n s s t t a a l l l l a a t t i i o o n n All other models must use the following method or an equivalent when unit supports are field furnished: Each section of the Rooftop unit must be supported, which includes supports located at both ends.
  • Page 15 I I n n s s t t a a l l l l a a t t i i o o n n Figure 5. Roof Curb Kits Dimensional Data MUA-SVX003B-EN...
  • Page 16 I I n n s s t t a a l l l l a a t t i i o o n n MUA-SVX003B-EN...
  • Page 17 I I n n s s t t a a l l l l a a t t i i o o n n MUA-SVX003B-EN...
  • Page 18 I I n n s s t t a a l l l l a a t t i i o o n n MUA-SVX003B-EN...
  • Page 19 I I n n s s t t a a l l l l a a t t i i o o n n MUA-SVX003B-EN...
  • Page 20 I I n n s s t t a a l l l l a a t t i i o o n n MUA-SVX003B-EN...
  • Page 21 I I n n s s t t a a l l l l a a t t i i o o n n Figure 6. Roof Opening Dimensional Data Figure 7. Unit/Curb End Rail Assembly MUA-SVX003B-EN...

  • Page 22: Venting

    I I n n s s t t a a l l l l a a t t i i o o n n Figure 8. Roof Curb Specifications Venting All venting installations shall be in accordance with the latest edition of Part 7, “Venting of Equipment”, of the National Fuel Gas Code, ANSI Z223.1 or applicable provisions of local building codes.

  • Page 23: Duct Connections

    I I n n s s t t a a l l l l a a t t i i o o n n W W A A R R N N I I N N G G P P r r o o p p e e r r V V e e n n t t i i n n g g R R e e q q u u i i r r e e d d ! ! F F a a i i l l u u r r e e t t o o f f o o l l l l o o w w i i n n s s t t r r u u c c t t i i o o n n s s b b e e l l o o w w c c o o u u l l d d r r e e s s u u l l t t i i n n d d e e a a t t h h o o r r s s e e r r i i o o u u s s i i n n j j u u r r y y .

  • Page 24: Modulating Gas Control (Optional)

    I I n n s s t t a a l l l l a a t t i i o o n n W W A A R R N N I I N N G G F F i i r r e e H H a a z z a a r r d d ! ! F F a a i i l l u u r r e e t t o o f f o o l l l l o o w w i i n n s s t t r r u u c c t t i i o o n n s s b b e e l l o o w w c c o o u u l l d d r r e e s s u u l l t t i i n n d d a a m m a a g g e e t t o o t t h h e e u u n n i i t t g g a a s s v v a a l l v v e e a a n n d d c c a a u u s s e e a a f f i i r r e e h h a a z z a a r r d d w w h h i i c c h h c c o o u u l l d d r r e e s s u u l l t t i i n n d d e e a a t t h h o o r r s s e e r r i i o o u u s s i i n n j j u u r r y y .

  • Page 25: Electrical Connections

    I I n n s s t t a a l l l l a a t t i i o o n n Electrical Connections W W A A R R N N I I N N G G H H a a z z a a r r d d o o u u s s V V o o l l t t a a g g e e ! ! F F a a i i l l u u r r e e t t o o d d i i s s c c o o n n n n e e c c t t p p o o w w e e r r b b e e f f o o r r e e s s e e r r v v i i c c i i n n g g c c o o u u l l d d r r e e s s u u l l t t i i n n d d e e a a t t h h o o r r s s e e r r i i o o u u s s i i n n j j u u r r y y .
  • Page 26 I I n n s s t t a a l l l l a a t t i i o o n n Figure 10. Electrical Cabinet Outdoor line voltage conduits leading into the unit should be installed to prevent rain from wetting any high voltage wire.

  • Page 27: Dx Coil Equipped Units (Optional)

    I I n n s s t t a a l l l l a a t t i i o o n n Figure 11. Disconnect Box Locations DX Coil Equipped Units (Optional) See Coil Installation/Maintenance Manual for Refrigerant Piping, Liquid and Suction Line Components, Refrigerant Charging and Thermal Expansion Valve Adjustment.

  • Page 28: Chilled Water Coil Equipped Units (Optional)

    I I n n s s t t a a l l l l a a t t i i o o n n Chilled Water Coil Equipped Units (Optional) See Coil Installation/Maintenance Manual for General Coil Piping Recommendations. Remove the coil cabinet door and cut holes in door to allow chilled water piping passage.

  • Page 29: Operation

    Operation General Information Refer to Outdoor Rooftop Gas-Fired Duct Furnace Installation and Service Manual for specific information regarding the heating operation of this unit. All units are equipped with a intermittent pilot ignition system. The pilot is lit and extinguished each cycle of unit heating operation.

  • Page 30: Optional Gas Controls

    O O p p e e r r a a t t i i o o n n Optional Gas Controls These units are available with optional gas controls which will give either multi-stage or modulating operation. The sequence of operation of those units equipped with these optional gas controls differs only at what rate each duct furnace’s main burners ignite and operate at or the order of duct furnace firing for those units equipped with two or three duct furnaces.
  • Page 31 O O p p e e r r a a t t i i o o n n W W A A R R N N I I N N G G F F i i r r e e H H a a z z a a r r d d ! ! F F a a i i l l u u r r e e t t o o f f o o l l l l o o w w i i n n s s t t r r u u c c t t i i o o n n s s b b e e l l o o w w c c o o u u l l d d r r e e s s u u l l t t i i n n d d e e a a t t h h o o r r s s e e r r i i o o u u s s i i n n j j u u r r y y , , a a n n d d p p r r o o p p e e r r t t y y d d a a m m a a g g e e .

  • Page 32: Lighting

    O O p p e e r r a a t t i i o o n n tighten set screw and replace belt(s). Adjust belt tension to give 1⁄2 inch to 3⁄4 inch belt play when depressed. N N O O T T I I C C E E B B l l o o w w e e r r M M o o t t o o r r F F a a i i l l u u r r e e ! ! F F a a i i l l u u r r e e t t o o f f o o l l l l o o w w i i n n s s t t r r u u c c t t i i o o n n s s b b e e l l o o w w c c o o u u l l d d r r e e s s u u l l t t i i n n i i m m p p r r o o p p e e r r u u n n i i t t o o p p e e r r a a t t i i o o n n a a n n d d m m o o t t o o r r f f a a i i l l u u r r e e .

  • Page 33: Pilot Adjustment

    O O p p e e r r a a t t i i o o n n 1. Obtain the heating value of the gas from the local utility or gas dealer. This should be in units of Btu/ft (MJ/m 2.
  • Page 34 O O p p e e r r a a t t i i o o n n the limit set point, normally caused by insufficient air throughput, all gas is shutoff. The limit control has an automatic reset and once the unit has cooled, it will reset itself. This is a safety control and if cycling on the primary limit is noted, corrective action must be taken.

  • Page 35: Start-Up

    Start-Up Before starting the unit, use the “Gas Equipment Start Up Sheet” (located at the end of this manual) and read the Outdoor Duct Furnace Manual entirely in conjunction with the procedures outlined below to ensure that the unit is completely and properly installed and ready for start up. W W A A R R N N I I N N G G C C h h e e c c k k o o f f S S a a f f e e t t y y D D e e v v i i c c e e s s R R e e q q u u i i r r e e d d ! ! F F a a i i l l u u r r e e t t o o d d o o f f o o l l l l o o w w i i n n s s t t r r u u c c t t i i o o n n s s b b e e l l o o w w c c o o u u l l d d c c a a u u s s e e u u n n s s a a f f e e c c o o n n d d i i t t i i o o n n s s a a n n d d r r e e s s u u l l t t i i n n d d e e a a t t h h , ,...
  • Page 36 S S t t a a r r t t - - U U p p 3. Place the system switch in the ON position. N N o o t t e e : : With the thermostat calling for cooling, unit operation is automatic. F F i i n n a a l l C C h h e e c c k k o o u u t t Run the unit sequentially through its stages of heating and cooling.

  • Page 37: Maintenance

    Maintenance General Information W W A A R R N N I I N N G G H H a a z z a a r r d d o o u u s s S S e e r r v v i i c c e e P P r r o o c c e e d d u u r r e e s s ! ! F F a a i i l l u u r r e e t t o o f f o o l l l l o o w w a a l l l l p p r r e e c c a a u u t t i i o o n n s s i i n n t t h h i i s s m m a a n n u u a a l l a a n n d d o o n n t t h h e e t t a a g g s s , , s s t t i i c c k k e e r r s s , , a a n n d d l l a a b b e e l l s s c c o o u u l l d d r r e e s s u u l l t t i i n n d d e e a a t t h h o o r r s s e e r r i i o o u u s s i i n n j j u u r r y y .

  • Page 38: Filters

    M M a a i i n n t t e e n n a a n n c c e e 8. Remove any dirt, dust or other foreign matter from the burners using a wire brush and/or compressed air. Insure all parts of the burner are unobstructed. Inspect and clean pilot burner if necessary.

  • Page 39: Air Blower

    M M a a i i n n t t e e n n a a n n c c e e Table 3. High CFM Blower Air Filter Size Requirements (continued) Number of Filters Required Unit Input 16 x 20 (in) 20 x 20 (in) 250 MBtuh (73.2 kW) 300 MBtuh (87.9 kW)
  • Page 40 M M a a i i n n t t e e n n a a n n c c e e 5. Adjust driver pulley pitch diameter for desired speed by opening (slower) or closing (faster) moving parts by half or full turns. Do not open sheave past point where flange projects past the hub end.
  • Page 41 M M a a i i n n t t e e n n a a n n c c e e Figure 15. Blower RPM Adjustment MUA-SVX003B-EN...

  • Page 42: Troubleshooting

    Troubleshooting For troubleshooting of the duct furnace, refer to Indoor Rooftop Gas-Fired Duct Furnace Installation and Service Manual. For Evaporative Cooler/Cooling Coil equipped units, refer to these specific manuals for additional troubleshooting guides. For additional troubleshooting, see following Troubleshooting Guide. Troubleshooting Guide —...
  • Page 43 T T r r o o u u b b l l e e s s h h o o o o t t i i n n g g Problem Probable Solution Cause Blower Wheel 1. Loose on shaft 2.

  • Page 44: Troubleshooting Guide - Electric Motors

    T T r r o o u u b b l l e e s s h h o o o o t t i i n n g g Problem Probable Solution Cause Duct System 1. Actual system is more restrictive than expected.
  • Page 45 T T r r o o u u b b l l e e s s h h o o o o t t i i n n g g Problem Probable Solution Cause Motor overloaded Reduce load or replace motor. With a 3 phase Check line for open phase.

  • Page 46: Troubleshooting Guide - Fan Assembly

    T T r r o o u u b b l l e e s s h h o o o o t t i i n n g g Problem Probable Solution Cause Bent motor shaft Replace motor. Excessive Rapid Motor Reduce belt tension.

  • Page 47: Troubleshooting Guide - Dx Cooling Coil

    T T r r o o u u b b l l e e s s h h o o o o t t i i n n g g Problem Probable Solution Cause Driver and driven Realign drive. shafts shifted from parallel Belt cord section Replace belts and install properly.

  • Page 48: Troubleshooting Guide - Chilled Water Cooling Coil

    T T r r o o u u b b l l e e s s h h o o o o t t i i n n g g Troubleshooting Guide — Chilled Water Cooling Coil Problem Probable Solution Cause No or Insufficient Circulating pump...

  • Page 49: Unit Net & Ship Weights

    Unit Net & Ship Weights N N o o t t e e : : All unit weights are less motor, outside air hood and cooling coils with drain pan. For units ordered with double wall construction (Optional) add an additional 10% of the base unit weight.

  • Page 50: Double Wall Construction Adder

    U U n n i i t t N N e e t t & & S S h h i i p p W W e e i i g g h h t t s s Double Wall Construction Adder For units ordered with double wall construction: add an additional 10% to the base unit weight.

  • Page 51: Approximate Motor Shipping Weights

    U U n n i i t t N N e e t t & & S S h h i i p p W W e e i i g g h h t t s s Approximate Motor Shipping Weights Table 6.

  • Page 52: Center Of Gravity

    Center of Gravity Figure 16. Center of Gravity N N o o t t e e : : Values based on Average Motor Weight (Actual Center of Gravity and Corner Weights for Specific Motor Size are Available Upon Request) Center of Gravity Data MUA-SVX003B-EN...
  • Page 53 C C e e n n t t e e r r o o f f G G r r a a v v i i t t y y MUA-SVX003B-EN...
  • Page 54 C C e e n n t t e e r r o o f f G G r r a a v v i i t t y y MUA-SVX003B-EN...
  • Page 55 C C e e n n t t e e r r o o f f G G r r a a v v i i t t y y MUA-SVX003B-EN...

  • Page 56: Model Number Description

    Model Number Description AH Model Number Description 5, 6 Digit 14 — Air Handler Arrangements Digit 17 — Coil Options Digits 1, 2 — Unit Type B — Blower (Standard) O — No cooling coil selection AH — Air Handling Unit C —...
  • Page 57 M M o o d d e e l l N N u u m m b b e e r r D D e e s s c c r r i i p p t t i i o o n n Digit 21 —...

  • Page 58: Gr Model Number Description

    M M o o d d e e l l N N u u m m b b e e r r D D e e s s c c r r i i p p t t i i o o n n GR Model Number Description 5, 6 Digit 8 —...
  • Page 59 M M o o d d e e l l N N u u m m b b e e r r D D e e s s c c r r i i p p t t i i o o n n Digit 15 —...

  • Page 60: Engineered Products Rooftop Arrangements (Ra)

    M M o o d d e e l l N N u u m m b b e e r r D D e e s s c c r r i i p p t t i i o o n n Engineered Products Rooftop Arrangements (RA)* N N o o t t e e s s : : * 1.

  • Page 61: Gas Equipment Start-Up

    Gas Equipment Start-Up MUA-SVX003B-EN...
  • Page 62 N N o o t t e e s s MUA-SVX003B-EN...
  • Page 63 N N o o t t e e s s MUA-SVX003B-EN...
  • Page 64 ® , Thermo King ® Trane ® — work together to enhance the quality and comfort of air in homes and buildings; transport and protect food and perishables; and increase industrial productivity and efficiency. We are a global business committed to a world of sustainable progress and enduring results.

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