Trane GRAA Installation, Operation And Maintenance Manual 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
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connections should be made and leak-tested by a suitably qualified individual, per
instructions in this manual.
Use only the fuel for which the heater is designed (see nameplate). Using LP gas in a heater
that requires natural gas, or vice versa, will create the risk of gas leaks, carbon monoxide
poisoning and explosion.
P P r r o o p p e e r r F F u u e e l l 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 c c r r e e a a t t 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 s s u u c c h h a a s s g g a a s s l l e e a a k k s s , ,
c c a a r r b b o o n n m m o o n n o o x x i i d d e e p p o o i i s s o o n n i i n n g g a a n n d d e e x x p p l l o o s s i i o o n n , , 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 . .
U U s s e e o o n n l l y y t t h h e e f f u u e e l l f f o o r r w w h h i i c c h h t t h h e e h h e e a a t t e e r r i i s s d d e e s s i i g g n n e e d d ( ( s s e e e e n n a a m m e e p p l l a a t t e e ) ) . . D D o o n n o o t t a a t t t t e e m m p p t t t t o o
c c o o n n v v e e r r t t t t h h e e h h e e a a t t e e r r f f o o r r u u s s e e w w i i t t h h a a f f u u e e l l o o t t h h e e r r t t h h a a n n t t h h e e o o n n e e i i n n t t e e n n d d e e d d . .
Make certain that power source conforms to electrical requirements of heater. Disconnect
power before installing or servicing heater. If power disconnect is out of sight, lock it in open
position and tag it to prevent unexpected application of power. Failure to do so could result in
fatal electric shock.
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 . .
D D i i s s c c o o n n n n e e c c t t a a l l l l e e l l e e c c t t r r i i c c p p o o w w e e r r , , i i n n c c l l u u d d i i n n g g r r e e m m o o t t e e d d i i s s c c o o n n n n e e c c t t s s 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 . . F F o o l l l l o o w w
p p r r o o p p e e r r l l o o c c k k o o u u t t / / t t a a g g o o u u t t p p r r o o c c e e d d u u r r e e s s t t o o e e n n s s u u r r e e t t h h e e p p o o w w e e r r c c a a n n n n o o t t b b e e i i n n a a d d v v e e r r t t e e n n t t l l y y
e e n n e e r r g g i i z z e e d d . . V V e e r r i i f f y y t t h h a a t t n n o o p p o o w w e e r r i i s s p p r r e e s s e e n n t t w w i i t t h h a a v v o o l l t t m m e e t t e e r r . .
Special attention must be given to any grounding information pertaining to this heater. To
prevent the risk of electrocution the heater must be securely and adequately grounded. This
should be accomplished by connecting a grounded conductor from the service panel to the
conduit box of the heater. To ensure proper ground, the grounding means must be tested by
qualifi edfield technician.
Do not insert fingers or foreign objects into the heater or its air moving device. Do not block
or tamper with the heater in any manner while in operation or just after it has been turned off,
as some parts may be hot enough to cause injury.
This heater is intended for general heating applications ONLY. It must NOT be used in
potentially dangerous locations such as flammable explosive, chemical-laden or wet
atmospheres.
In cases in which property damage may result from malfunction of the heater, a backup
system or a temperature sensitive alarm should be used.
The venting is an integral part of the unit and must not be altered in the field. The Natural
Vented units are equipped with a vent cap which is designed for natural draft venting. Air for
combustion enters the base of the vent cap through a protective grill and products of
combustion are discharged at the upper section of the vent cap. This vent cap is shipped in a
separate carton and should be installed per the Venting section of the Outdoor Rooftop Gas-
Fired Duct Furnace Installation and Service Manual. The Power Vented unit has a induced
draft venting system. The combustion air inlet and products of combustion discharge grills
are located in the upper section of the Duct Furnace side access panel.
A pilot burner plate is provided in the Duct Furnace for access to the pilot burner and ignition
system without removing the burner drawer. Clearance between the external unit and any
obstruction must be sufficient for proper servicing of pull out burner drawer. See
11 and Figure 3, p. 11 for this clearance.
These units are certified for operation on either natural or propane gases. If a unit is to be
installed at an altitude exceeding 2000 feet (610 m) above sea level, derate the unit input of
each duct furnace by 4% for each 1000 feet (305 m) above sea level. Special main burner gas
orifices are required for installations above 2000 feet (610 m).
W W A A R R N N I I N N G G
W W A A R R N N I I N N G G
Figure 2, p.
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