Carrier 50MH - Manual (Page 2)

(7) RETURN A5R REGISTER
( z ) l4*x25”;il“nETER(PERMANEN7
^ TYPE)
iT) RETURN AiR PLENUM
0 COLLAR
DETAIL B
(SUPPLY ASSEMBLY)
DETAIL A
(RETURN ASSEMBLY)
FLEXIBLE DUCT
:0! BAFFLE
(T) TAP*IN COLLAR
(e) INSULATED ELBOW
LINER
------ CONTROL WIRING
——POWER WIRING
^ CONDENSER AIR FLOW
evaporator air flow
Fig. 2 — Typical Installation
Connect flexible duct to filter box. Extend
duct from filter box to unit return air connection.
If possible, insert a total of a 90-degree bend in
return air duct for sound dampening. Connect duct
to unit return air connection.
When existing furnace is kept in system:
During heating season, insert a sheet metal
panel beneath return air grille and over filter to
prevent air movement thru cooling unit.
When furnace is removed from system, blank
off original furnace floor connection.
CONDENSATE DRAIN
A condensate trap is factory supplied and taped
to unit suction line for shipment. Connect trap to
unit condensate drain fitting with clamp provided.
See Fig. 4 and 5.
Applying Clamp
1. Pull ends apart.
2. Wrap around condensate trap with toothed end
beneath. Prelatch by compressing until last
ratchet teeth catch behind small tabs.
3. Grip adjacent bridges with pliers and compress
to tight position.
4. To remove, lift the locking tongue with
screwdriver.
ELECTRIC RESISTANCE HEATER
Remove fan section access panel and sheet
metal plate covering heater installation area (be­
tween evaporator fan discharge and supply air
connection). See Fig. 6. Discard sheet metal plate
and insert heater into opening provided. Insert
heater support bar thru hole in side of fan
discharge duct. Fasten heater in place at top and
bottom with two sheet metal screws. See Wiring
section for power connection details.