Reznor X Unit Installation Manual - Manual (Page 5)

Form I-X, P/N 150491 R10, Page 5
3.2 Preparing the
Furnace for
Installation
Read this booklet and become familiar with the installation requirements of your par-
ticular furnace. If you do not have knowledge of local requirements, check with the
local gas company or any other local agencies who might have requirements concern-
ing this installation. Before beginning, make preparations for necessary supplies, tools,
and manpower.
Check to see if there are any field-installed options that need to be assembled to the
furnace prior to installation.
Option Parts -- Some gas control options will have parts either shipped loose with the
heater or shipped separately. If your unit is equipped with any of the gas control options
listed below, be sure these parts are available at the job site.
Application Opt Shipped Separate Components
Heating - Gas Control AG7 Thermostat, P/N 48033
Makeup Air - Gas
Control Options
AG3 Control Switch, P/N 29054
AG8 Control Switch, P/N 29054; Sensor & Mixing Tube, P/N 48041
AG9 Control Switch, P/N 29054; Remote Temperature Selector,
P/N 48042; Sensor & Mixing Tube, P/N 48041
AG15
Control Switch, P/N 29054; Remote Temperature Selector,
P/N 115848; Stage Adder Module, P/N 115849; Discharge
Air Sensor Holder, P/N 115850; Discharge Air Sensor Holder
Bracket, P/N 213612
FIGURE 2 - Heat Exchanger Directional Air Baffles Top Baffle
Support
Screws
B
Bottom
Baffle Support
Bracket
s
Air Discharge
Direction of
Airflow
Screw C
Right
Lef
t
Screws A
Screw C
Airflow
Baffles
Other shipped-separate options could include a vent damper, a power venter, a gas
shutoff valve, a condensate drain fitting, a thermostat, and/or a disconnect switch.
3.2.1 Instructions for
Reversing Airflow by
Changing Directional
Air Baffles in the Heat
Exchanger
Model X furnaces are equipped with directional air baffles between the heat exchanger
tubes. Facing the control compartment of the furnace, the standard direction of airflow
is from left to right. An installation requiring direction of airflow from right to left when
facing the control compartment requires repositioning of the directional air baffles at
the installation site. Follow the instructions in FIGURE 2 to change the position of
baffles:
3.2.2 Change the Vent
Outlet Direction
FIGURE 3 - Horizontal
or Vertical Flue
Connection
To change orientation (vertical or
horizontal) of the flue connection:
(1) Remove screws; (2) Reverse
position; (3) Re-fasten.
The vent outlet may be horizontal
or vertical.
FIGURE 4 - Condensate
Drain, Option CS1
(P/N 31765)
Seal holes in bottom pan with RTV sealant.
Terminate drain outside of building.
Periodic cleaning of the condensate
collector and disposal system is required.
3.2.3 Install
Condensate Drain,
Option CS1
#10-32 x 1”Lg Machine
Screw & Nut 3/4” Pipe Waste Nut
RTV Sealant
Condensate can form in the heat exchanger of furnaces installed as makeup air units
or when installed downstream from a cooling coil. Under these conditions, a drain
flange, Option CS1, may be installed on the furnace bottom as shown in FIGURE 4.
When using Option CS1, seal all corners and the four square holes in the bottom pan
edge. NOTE: A 4-inch (102mm) minimum clearance is required under the furnace if a
90° street elbow is used.
a) Remove Screws "A". Individually lift each baffle slightly and slide
forward. Remove all baffles completely from the heat exchanger.
b) Remove Screws "B" and the top baffle support assembly.
Re-position the assembly to the opposite end of the heat
exchanger and attach.
c) Remove Screws "C" and the assembled bottom baffle support
and brackets. Plug the holes in the heat exchanger bottom by
re-inserting the screws in the holes. Position the assembly on
the opposite end of the heat exchanger and attach using field-
supplied sheetmetal screws.
d) Re-install all of the individual baffles by reversing the procedure in
Step a) above.