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Condensate Drains
Remove cap and make drain connection to the 1" N.P.T.
drain coupling provided on unit. A trap must be installed
between drain connection and an open vent for proper
condensate removal. See figure 4. Always route
condensate line to a drain; condensate can damage
roofing material. The condensate line must be vented.
Check local codes concerning condensate disposal.
Refer to dimensions in the front of this manual for
condensate drain location.
CONDENSATE DRAIN CONNECTION
NOTE - Allow clearance to
open doors when installing
condensate piping.
Minimum Pitch
1" (25 mm) per
OPEN VENT
10' (3 m) of line
Á
Á
Á
Á Á
Á Á
Á Á Á Á Á Á Á
FIGURE 4
CAULK AROUND
CONDENSATE
COUPLING
UNIT
MOUNTING
FRAME
Page 8
Water Supply Connections
Supply and return water connections are to be made with
black iron pipe suitable for use in water systems. Lines
must enter the unit through the opening in the base.
Field-provided dielectric unions and flexible steel braided
hose should be installed between the black iron pipe and
the supply and return water connections. See dimensions
in the front of this manual.
1- Remove two-piece cover and install black iron pipes
through openings in base. Extend pipes 3-6in.
(76-152mm) above the opening. Use the following
diameter black iron pipe with NPT male threads:
036 - 1" diameter
060 - 1-1/4" diameter
120 - 1-1/2" diameter
240 - 2" diameter
2- Install the field-provided dielectric unions and flexible
steel braided hoses between the black iron pipe and
unit water in/out connections.
3- Apply a thread sealing compound to threaded
connections. Use only thread sealing compounds
compatible with water systems. Make sure hoses are
not kinked; this may indicate incorrect black iron pipe
height.
4- Cut half-round openings in the cover to fit around the
black iron pipe. See figure 5. Secure two-piece cover
to flanges and apply mastic sealant around openings.
IMPORTANT - Make sure flexible steel hoses are not
kinked. Kinked hoses may increase pressure drop and
reduce system performance.
Verify air vents are closed and that three-way water
inlet/outlet valves are in bypass position before pressure
testing the building system with air to avoid a
false-positive leak check. See figure 6, 7, or 8. Do not
pressurize the hose kits with more than 300 psi.
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