Drain Application; Condensate Drain Piping; Plastic Drain Pan Installation - Bosch BMAC2430ANTD Installation Manual

1 0 | Bosch Multi-Position Cased Coils

4 Drain application

4.1 Condensate drain piping

Consult local codes for special requirements.
To provide extra protection from water damage, it is always recommended to install
an additional drain pan, provided by installer, under the entire unit with a separate
drain line. Manufacturer will not be responsible for any damages due to the failure to
follow these recommendations.

4.2 Plastic drain pan installation

WARNING:

Do not use the coil pan shipped with the unit on OIL furnaces
or any application where the temperature of the drain pan
may exceed 275 °F . A field fabricated metal drain pan can
also be used for these type of applications. Failure to follow
this warning may result in property damage and/or personal
injury.
The coil drain pan has a primary and an optional secondary drain with 3/4" NP T
female connections; use either PVC or copper pipe and hand tighten to a torque of
approximately 37 in-lbs. to prevent damage to the drain pan connection. An insertion
depth between .355 to .485 inches (3-5 turns) should be expected at this torque
setting.
Use male 3/4" NPT threaded fi tting for outside connection and make sure the drain
holes are not blocked.
Insulation may be needed for drain line to prevent sweating.
Drain pan has two drain connections on each side to provide fl exibility of connection
and drainage. Make sure pan has proper pitch and plugged if second connection is
not used.
If the secondary drain line is required, run the line separately from the primary drain
and terminate it where it can be easily seen.
Water coming from this line means the coil primary drain is plugged and
needs clearing.
Install a trap in the drain line below the bottom of the drain pan. If using a copper
drain line, solder a short piece of pipe to the connector before installing a drain
fi tting. DO NO T over torque the 3/4" copper connector to the plastic drain
connection. Use a wet rag or heatsink material on the short piece to protect plastic
drain pan, complete the drain line installation (Fig.8 ). Use (Fig.9) as a template
for typical drain pipe routing. This fi gure shows how to avoid interference with vent
piping.
Data subject to change
Installation Manual
03.2017 | Bosch Thermotechnology Corp.