70
18-CE12D1-1D-EN
Horizontal Applications
HORIZONTAL APPLICATIONS
Upflow models in horizontal -
It is always recommended that the
auxiliary drain pan be installed under a horizontally installed
evaporator and/or 90% gas furnace. Connect the auxiliary drain pan
to a separate drain line (no trap is needed in this line).
Connections must be made to an
OPEN/VENTED DRAIN
. Outdoor
draining of the furnace and coil condensate is permissible 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.
Note:
Use 1/2" or larger PVC or CPVC pipe and fittings as required for
drain connections (fittings, pipe and solvent cement not
provided).
Note:
A corrosion resistant condensate pump must be used if a pump
is required for a specific drain system.
Important:
The condensate drain should be installed with provisions
to prevent winter freeze-up of the condensate drain line.
Frozen condensate will block drains, resulting in furnace
shutdown. If the drain line cannot be installed in a
conditioned space, then UL listed heat tape should be
applied as required to prevent freezing (per
manufacturer’s instructions). The heat tape should be
rated at 5 or 6 watts per foot at 120 volts. Self-regulating
(preferred) or thermostatically controlled heat tape is
required.
TO APPROVED
OPEN / VENTED DRAIN
FURNACE MUST BE SUPPORTED AT ALL FOUR
CORNERS. BAYHANG - OPTIONAL HORIZONTAL
HANGING BRACKET KIT
Note: The overflow stand pipe termination must be even with or slightly below
the bottom of the condensate trap.
Note: Water from the overflow pipe must drain into the emergency drain pan.
To prevent AC condensate from backing up into the furnaces, follow
these instructions for condensate drainage.
Note:
1. The overflow stand pipe termination must be even with or
slightly below than the bottom of the condensate trap.
Note:
2. Water from the overflow pipe must drain into the emergency
drain pan.
Note:
3. It is recommended to use the secondary drain. The
secondary drain pipe must terminate over the emergency drain
pan.
Note:
4. Emergency drain pan.
12
3
4
Horizontal Right
12
3
4
Horizontal Left
