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Installation
Requirements for Modulating Reheat Dehumidification
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Figure 18. Condensate Drain Locations
Condensate Drain Connections
Each S_HL and S_HK unit is provided with four 1" evaporator condensate drain connections (two
on each side of the unit).
Due to the size of these units, all condensate drain connections must be connected to the
evaporator drain connections. Refer to the appropriate illustration in
location of these drain connections.
A condensate trap must be installed due to the drain connection being on the "negative pressure"
side of the fan. Install the P-Traps at the unit using the guidelines in
Pitch the drain lines at least 1/2 inch for every 10 feet of horizontal run to assure proper condensate
flow. Do not allow the horizontal run to sag causing a possible double-trap condition which could
result in condensate backup due to "air lock" .
Units with Gas Furnace
Units equipped with a gas furnace have a 3/4" CPVC drain connection stubbed out through the
vertical support in the gas heat section. It is extremely important that the condensate be piped to
a proper drain. Refer to the appropriate illustration in
drain connection.
Note: Units equipped with an optional modulating gas furnace will likely operate in a condensing
50
Install (5U108) humidity sensor in space or return duct
Complete field wiring of humidity sensor to ECEM (1TB16). Refer to "Field Installed Control
wiring" for guidelines.
mode part of the time.
Note:
Connect all sloped drain pan connections on
each side of the unit (total 4) to the trapped
condensate drain.
Each drain pan connection must be trapped.
The drains may be trapped individually or
connected and then trapped.
Figure 9
Sloped Drain Pan Option
(2) condensate drain openings
both sides
Figure 9
and
Figure 10
Figure
19.
and
Figure 10
for the location of the
RT-SVX36G-EN
for the
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