Condensate Drain - Carrier FAS150 Installation, Start-Up And Service Instructions Manual

A A
First On/Last Off = B
Vertical Installation
First On/Last Off = A
Horizontal Installation
Fig. 8 — Typical Evaporator Coil Connections
(FAS/FHS)
Vapor Line Vapor Line
45° 45°
LEGEND
TXV — Thermostatic Expansion Valve
NOTE: The 8 o'clock position is shown above.
Fig. 9 — TXV Sensing Bulb Location
14
Liquid Line Liquid Line
Connection Connection
B B
Suction-Vapor Suction-Vapor
Connection Connection
Condensate Condensate
Drain Drain
Connection Connection
B B
A A
Condensate Drain Connection
Strap Strap
TVX Bulb TVX Bulb
Specifications subject to change without notice.

Condensate Drain

Install a trapped condensate drain line to unit connection as
shown in Fig. 10. The unit drain connection is a PVC stub.
(See Fig. 11.) Some areas may require an adapter to con-
nect to either galvanized steel or copper pipe. For these ap-
plications, install a field-supplied threaded PVC adapter.
NOTE: A trap must be installed in the condensate drain line
to ensure that the static pressure of fans is balanced with
the water column in the drain line and that condensate can
drain completely from pan. Without a trap, air can be drawn
up drain line until water level in condensate pan becomes
equal to static pressure created by fans, preventing com-
plete drainage. Conditions will worsen as filters become
dirty.
Install clean-out plugs in trap. Pitch drain line downward to
an open floor drain or sump. Provide service clearance
around drain line to permit removal of unit panels. Observe
all local sanitary codes.
As shipped, the unit's condensate drain pan is NOT sloped
towards the drain connection. The pan slope must be
changed to pitch towards the side of the unit with the drain
connection. (See Fig. 11.) Loosen the 2 screws next to the
drain outlet at both ends of the unit, push drain pan down in
the slots near the drain connection, and up in the slots on
the opposite end. Re-tighten screws. The pan should have
a pitch of at least 1/4 in. over its length toward the drain
connection.
Plug Plug
Plug Plug
3" Min. 3" Min.
[76] [76]
Plug Plug
Existing Floor Existing Floor
Drain, Sink, or Drain, Sink, or
Hopper Hopper
1" Min. 1" Min.
[25] [25]
To Sewer To Sewer
NOTE: Dimensions in [ ] are in millimeters
Fig. 10 — Condensate Drain
From From
Condensate Condensate
Pan Pan
3" Min. 3" Min.
3" MIN.
[76]
[76] [76]
Plug Plug
Unit Unit
Condensate Condensate
Conn Conn
3" Min. 3" Min.
[76] [76]
Trap Trap
Not Less Than 18" [457] Not Less Than 18" [457]
Long and Two Sizes Long and Two Sizes
Larger Than Waste Pipe Larger Than Waste Pipe
Trap Trap
FASFHS150-180-01SI