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Installer's Guide
FIELD WIRING DIAGRAM FOR VARIABLE SPEED 2 STAGE FURNACE
OUTDOOR UNIT NO. 1
(NO TRANSFORMER)
SEE NOTE 3
OUTDOOR UNIT NO. 2
(NO TRANSFORMER)
B/C
Knock outs are provided on the left and right hand side of
both furnace cabinets for drain connections IN VERTICAL
APPLICATIONS. The standard arrangement is for the drain
connection on the left side. The tubing may have to be
trimmed in this application to avoid kinking.
The upflow (vertical application) has provisions for right
side drain connections by turning the trap and extending the
tubing to the lower right front corner of the furnace. Trim all
excess tubing to avoid kinking. The connecting tubing for left
or right side condensate drain shown in Figure 40 is shipped
in the blower compartment.
The downflow (vertical application) may be right side
drain by removing the drain lines and rotating the trap from
left to right, reconnecting the lines, and running 1/2" CPVC
pipe from the trap to the right side knock out just over and
above the burner section (Use RTV high temperature silicone
sealant to connect the CPVC pipe to the trap for ease of
removing and cleaning the trap). See Figure 40.
▲
CAUTION
!
It is recommended that a drain pan be installed under the
furnace to prevent property damage, personal injury or
death from leaking condensate.
It is always recommended that an auxiliary drain pan be
installed under a horizontally installed evaporator or 90%
gas furnace. Connect the auxiliary drain line to a separate
drain line (no trap is needed in this line).
26
2 STAGE HEATING, 2 STAGE COOLING
(OUTDOOR SECTION WITHOUT TRANSFORMER)
W14
SEE
NOTE 7
TO 115 V 1 PH.,
60 HZ., POWER
SUPPLY PER
LOCAL CODES
SEE
NOTE 6
B/C
HUM SEE
NOTE 5
EAC SEE
NOTE 5
CONDENSATE DRAIN INSTRUCTIONS
All horizontal applications are left side only and
require repositioning the condensate canister trap to
the exterior of the cabinet. Additionally the drain
tubing connected to the inducer housing must be
repositioned for removing the plug and reconnecting
the tubing to the lower connection on the inducer
housing. See Figure 39.
For horizontal installation, remove the condensate trap and
position the trap outside the cabinet through the slotted
opening next to the secondary cell. On upflow/horizontal
models, remove lines from the blower section and pull
through the blower deck. Cut and reattach the line from the
secondary cell (use the spring to prevent kinking).
The inducer housing has a secondary drain opening at its
9 o'clock position. Remove the plug and use the plug to cover
the hole at the 6 o'clock position. Reposition the inducer
drain tube from 6 o'clock to the 9 o'clock location. Cut and
reattach the tube to the canister trap. Plug openings in
blower deck, inducer and blower section. See Figure 40.
Connections must be made to an OPEN/VENTED DRAIN.
Outdoor draining of the furnace and coil condensate is per-
missible if allowed by local codes. Caution should be taken to
prevent drains from freezing or causing slippery conditions that
could lead to personal injury. Excessive draining of condensate
may cause saturated ground conditions that may result in
damage to plants. Refer to illustrations of typical connections.
From Dwg. B342018 Rev. 0
18-CD20D3-18
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