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Installation, Operation,
and Maintenance
Separated Combustion Indoor Gas Fired Make-Up Air
Units
For Heating, Cooling and Ventilating Systems
M M o o d d e e l l s s :
GXAA
GXCA
GXBA
GXDA
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 6 6 B B - - E E N N
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Table of Contents
Troubleshooting
Related Manuals for Trane GXAA
Summary of Contents for Trane GXAA
- Page 1 Separated Combustion Indoor Gas Fired Make-Up Air Units For Heating, Cooling and Ventilating Systems M M o o d d e e l l s s : GXAA GXCA GXBA GXDA 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 Only qualified personnel should install and service the equipment.
- 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.
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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 Seasonal Maintenance ............38 Filters .
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Page 6: Receiving Instructions
Receiving Instructions Make-up Air Units with multiple furnaces are shipped in sections. Each section has a label with Order No., Model No., Unit No., and Part No. marked on it. Make certain that the order, model, and part numbers agree on each section to be connected together. Inspect shipment immediately when received to determine if any damage has occurred to the crate during shipment. -
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 5.
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Page 9: Location
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 Location Before placing the Make-Up Air unit in its permanent location, make certain that the structure is capable of carrying the additional load of this equipment. -
Page 10: Suspension And 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 should be made from the wing or engine enclosure (whichever is higher from the floor) to the bottom of the heater. - 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 •...
- Page 12 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 3.
- Page 13 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 5.
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Page 14: Installation
Installation N N o o t t e e : : Refer to all dimensional data within the manuals equipped with your unit. Single Furnace Units Single furnace units (capacities 10-40) consist of a furnace section and an air handler section mounted on a common base rail. - 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 Table 1. Flexible Connector Kit (continued) (Approx.) Straight Length Flexible Connector Unit Capacity Required 124 Inch (3.15m) 80/12 135 Inch (3.43m) Figure 6.
- 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 Figure 7. Flexible Connector Kit Install MUA-SVX006B-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 Figure 8. Flexible Connector Kit Install MUA-SVX006B-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 Figure 9. Flexible Connector Kit Install MUA-SVX006B-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 Figure 10. Flexible Connector Kit Install MUA-SVX006B-EN...
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Page 20: Installation Clearances
I I n n s s t t a a l l l l a a t t i i o o n n Installation Clearances Minimum clearances to combustible material are shown on the unit data plate. It is important that clearances be maintained for servicing the unit, and that minimum clearances are provided from the unit to combustible material. - 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 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 .
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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 15. Manufacturer’s Recommended Service Clearances 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 Vent Systems Termination Clearance Requirements Minimum Clearance for Termination Locations Structure/Object CANADA 9 inch (230mm) for 10,000 to Door, window, or gravity vent inlet;... - Page 24 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 a a n n d d T T o o x x i i c c F F u u m m 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 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 .
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Page 25: 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 I I m m p p o o r r t t a a n n t t : : Unit installation for use with propane (bottled) gas must be made by a qualified LP gas dealer or installer. - 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 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 c c a a u u s s e e a a f f i i r r e e 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 , , 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 .
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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 17. Make-Up Air Unit — Standard Blower Cabinet, Single Duct Furnace with Various Options Shown Figure 18. -
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 • The DX Coil has a 300 ft/min. (1.524 m/s) minimum and a 600 ft/min. (3.048 m/s) maximum velocity through the coil requirement. -
Page 29: Operation
Operation General Information Refer to Separated Combustion Indoor 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 .
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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 P P r r i i m m a a r r y y L L i i m m i i t t C C o o n n t t r r o o l l : : The primary limit control is a factory installed component surface mounted in the inlet airstream at the end of the heat exchanger.
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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 Separated Combustion Indoor 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. - 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.
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Page 37: Maintenance
Maintenance 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 38: High Limit And/Or Safety Limit Maintenance
M M a a i i n n t t e e n n a a n n c c e e High Limit and/or Safety Limit Maintenance Single furnace units are equipped with a primary high limit on the upstream side of the heat exchanger and a secondary high limit on the downstream side of the heat exchanger. -
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 • It is recommended that air filters be changed or cleaned at least four times a year. More frequent attention to filters is required if the air being handled by the unit is unusually dirty. - Page 40 M M a a i i n n t t e e n n a a n n c c e e N N o o t t e e : : Refer to Standard/High CFM Blower tables in the previous “Filters” section. •...
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Page 41: Troubleshooting
Troubleshooting For troubleshooting of the duct furnace, refer to the Separated Combustion Indoor 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 42 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.
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Page 43: 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 44 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.
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Page 45: 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 46: 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 47: 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 48: Dimensional Data - Arrangements
Dimensional Data — Arrangements Indoor Arrangement A, Capacity 50–80 MUA-SVX006B-EN... -
Page 49: Indoor Arrangement A, Capacity 12
D D i i m m e e n n s s i i o o n n a a l l D D a a t t a a — — A A r r r r a a n n g g e e m m e e n n t t s s Indoor Arrangement A, Capacity 12 N N o o t t e e : : This tabulated dimensional data applies to all dimensional drawings. -
Page 50: Indoor Arrangement B, Capacity 10-40 (Ships In One Section)
D D i i m m e e n n s s i i o o n n a a l l D D a a t t a a — — A A r r r r a a n n g g e e m m e e n n t t s s N N o o t t e e s s : : •... -
Page 51: Indoor Arrangement B, Capacity 50-80 (Ships In Two Sections)
D D i i m m e e n n s s i i o o n n a a l l D D a a t t a a — — A A r r r r a a n n g g e e m m e e n n t t s s Indoor Arrangement B, Capacity 50–80 (ships in two sections) Indoor Arrangements D, Capacities 10–40 (ships in one section) MUA-SVX006B-EN... -
Page 52: Indoor Arrangements D, Capacities 50-80 (Ships In Two Sections)
D D i i m m e e n n s s i i o o n n a a l l D D a a t t a a — — A A r r r r a a n n g g e e m m e e n n t t s s Indoor Arrangements D, Capacities 50–80 (ships in two sections) MUA-SVX006B-EN... -
Page 53: Indoor Arrangements G, Capacities 20-40 (Ships In One Section)
D D i i m m e e n n s s i i o o n n a a l l D D a a t t a a — — A A r r r r a a n n g g e e m m e e n n t t s s Indoor Arrangements G, Capacities 20–40 (ships in one section) Indoor Arrangements G, Capacities 50–12 (ships in two sections) Capacity 12 shown. -
Page 54: Indoor Arrangements K, Capacities 10-40 (Ships In One Section)
D D i i m m e e n n s s i i o o n n a a l l D D a a t t a a — — A A r r r r a a n n g g e e m m e e n n t t s s Indoor Arrangements K, Capacities 10–40 (ships in one section) Indoor Arrangements K, Capacities 50–80 (ships in two sections) MUA-SVX006B-EN... -
Page 55: Motor Electric Data
Motor Electric Data Table 4. Full Load Current in Amperes MUA-SVX006B-EN... -
Page 56: Approximate Motor Shipping Weights
Approximate Motor Shipping Weights Table 5. Approximate Motor Shipping Weights (lbs) 1/2 HP 3/4 HP 10 HP 15 HP 1/2 HP 3/4 HP 1 HP 1-1/2 HP 2 HP 3 HP 1/2 HP 3/4 HP 1 HP MUA-SVX006B-EN... - Page 57 A A p p p p r r o o x x i i m m a a t t e e M M o o t t o o r r S S h h i i p p p p i i n n g g W W e e i i g g h h t t s s Table 6.
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Page 58: Coil Cabinet Dimensional Data
Coil Cabinet Dimensional Data Figure 25. Coil Cabinet Dimensional Data MUA-SVX006B-EN... -
Page 59: Separated Combustion Indoor Make-Up Air Arrangements
Separated Combustion Indoor Make-Up Air Arrangements IA “B” IA “A” CA (10/40) CA (50/80) IA “D” IA “B” CA (10/40) CA (50/80) IA “G” IA “D” CA (10/40) CA (50/80) IA “K” IA “G” CA (10/40) CA (50/80) IA “K” CA (50/80) IA = Indoor Arrangement (Digit #14) CA= Capacity (Digits #5 and 6) -
Page 60: Separated Combustion Indoor Make-Up Unit Number Description
Separated Combustion Indoor Make-Up Unit Number Description Digit 1 — Gas Heating Equipment Digit 9 — Gas Control Option, cont. Digit 15 — Indoor Heating Unit Motor Selection G = Gas Heating Equipment L = Electronic Modulation w/External 4-20 MA 0 = No Selection (Duct Furnace) Input All Furnaces A = 1/2 HP w/Contactor... - Page 61 S S e e p p a a r r a a t t e e d d C C o o m m b b u u s s t t i i o o n n I I n n d d o o o o r r M M a a k k e e - - U U p p U U n n i i t t 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 18 —...
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Page 62: Gas Equipment Start-Up
Gas Equipment Start-Up MUA-SVX006B-EN... - Page 63 N N o o t t e e s s MUA-SVX006B-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.