Trane Precedent YZC036E, Инструкция по установке, эксплуатации и обслуживанию

Страница: 33 / 60

Installation
RT-SVX46G-EN 33
Ultra Low NOx Gas Furnace Option -
Component Layout
F
Notes:
•
The NOx burner assembly is factory set for optimum
performance and should only be adjusted or modified
by a qualified technician.
• The burner box and premix/blower valve are mated
parts - if either part needs replaced the complete
assembly will need to be replaced.
• The low temperature cutoff switch is intended to
prevent gas heat operation below 32
° F due to low
operating temperature limitations with the premix
blower component.
• The NOx gas furnace option not available for high
altitude installations above 2000 ft.
Condensate Drain Configuration
An evaporator condensate drain connection is provided
on each unit. Refer to
Figure 38, p. 24 and Figure 39, p. 24
for the appropriate drain location.
The condensate drain pan is factory installed to drain
condensate to the back side of the unit. See
Figure 38,
p. 24 and Figure 39, p. 24 . It can be converted to drain
condensate out the front side of the unit or through-the-
base.
To convert drain condensate out the front of unit:
1. Remove evaporator access panel and supply air access
panels.
2. Remove the support panel that the condensate drain
pan exits through.
3. Slide the condensate drain pan out of the unit and
rotate 180°.
4. Slide the condensate drain pan back into the unit, align
the drain with the grommeted opening in the rear
support panel and push until the coupling is seated in
the grommet.
5. Replace the front support panel by aligning the panel
with tabs in the raceway. Align the condensate drain
pan support in the grommeted hole as the panel is put
in place.
6. Replace evaporator access panel and supply air access
panels.
To convert drain condensate through-the-base of unit:
1. Remove evaporator access panel and supply air access
panels.
Figure 60. NOx gas burner component layout
Flame sensor (shown for 90k furnace)
Flame rollout switch
Inducer motor
Pressure switch
Gas valve
Premix
blower
Spark
electrode
Note: Illustration is shown without Gas Heat Access Door and Right Center Post.
NOx
burner box
Field connection
- 1/2" npt(f)
Low temperature
ambient cutoff
switch
E box 24V
for gas valve
WARNING
Hazardous Voltage!
Failure to disconnect power before servicing could
result in death or serious injury. Disconnect all electric
power, including remote disconnects before servicing.
Follow proper lockout/tagout procedures to ensure the
power can not be inadvertently energized.