Condensate Drain - Bosch RL Series Installation, Operation And Maintenance Manual

Unit Installation
2. Mount the four brackets to unit's corner posts using the
screws provided in the kit as shown in Fig. 9. The bracket
tabs go into the slots on the base, and then the brackets are
screwed down.
The front brackets can be orientated in either way depicted
in Fig. 7. Choose the best option for the situation.
WARNING
DO NOT reuse screws removed from the unit in Step #1 to
mount the hanging brackets to the unit.
Fig. 9 Attaching Brackets
3. Install rubber grommet onto the brackets as shown in
Fig. 10.
4. Hang the unit and assemble the field-provided threaded rod,
nuts, and washers on to the brackets as shown in Fig. 10.
DANGER
The rods must be securely anchored to the ceiling.
Fig. 10 Threaded Rod
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5.6 Condensate Drain

5.6.1 Horizontal (HZ) Units
A drain line must be connected to the heat pump and pitched
away from the unit a minimum of 1/8" per foot to allow the
condensate to flow away from the unit.
This connection must be in conformance with local plumbing
codes. A trap must be installed in the condensate line to ensure
free condensate flow.
Horizontal units are not internally trapped.
A vertical air vent is sometimes required to avoid air pockets. The
depth of the trap depends on the amount of positive or negative
pressure that is on the drain pan while the unit's fan is operating.
A second trap must NOT be included. (See Fig. 11.)
Fig. 11 Condensate Drain Installation
RL Series Heat Pumps — 8733842393 (2024/05)