Carrier 50PQ - Manual (Page 3)

A great performer...
with unmatched versatility
As the concern for energy grows
and
grows, Carrier's 50RQ/PQ
single package heat pump looks
better and better. Short gas supply
and high cost electric power are no
problem with these versatile units
in operation. They're engineered
for a wide range of application . .
and installation is easy. For a
curbed heat pump with plenum, in
one piece ready to swing into place,
there's the 50PQ rooftop Or select
the RQ uncurbed ... on a slab for
horizontal air delivery. Or take the
RQ, attach the accessory plenum at
the jobsite and it's a PQ
With an excellent cooling HER,
heating C.O P. among the highest in
industry, factory installed options
and field installed accessories, these
units will match specifications for
the
m o s t v a r i e d b u i l d i n g
requirements
If you're looking for the reliable
one, the efficient one, the flexible
one . . the number 1 heat pump
on
the m a r k e t , LOOK TO
C A R R I E R !
New and improved features for a lifetime of
II New compressor for heavy duty
service — Carrier's new P compressor
more than meets the rigorous demands of
heat pump operation. Most efficient and
reliable hermetic in Carrier equipment
Thicker crankshaft Bigger bearing jour­
nals. Larger valves. Extra large oil pump.
Crankcase heater.
i> Exclusive, innovative variable circuit
refrigeration system — capacity and
COP are among the highest in industry
Maximizes refrigerant to air heat transfer
on both heating and cooling cycles No
other heat pump has it.
Carrier Exclusive.
I' Automatic defrost system — Keeps
coil frost-free at temperatures below
40 F. Chrono-temp control activates de­
frost system every 90 minutes if required
Automatically deactivates defrost cycle
when coil is clear or after a maximum of
10 minutes. Carrier Exclusive.
dependable performance.
'I Signal-LOCTivi _ Carrier's new com­
pressor protection system. Holds the
compressor off the line if any operational
or safety device trips the compressor
Operation of any one of the following
devices trips the compressor and lights an
indicator light on thermostat low-
pressure switch, high-pressure switch,
indoor coil freezeup thermostat, internal
line-break overload. Unit can be reset
manually
at the thermostat Carrier
Exclusive.
11 Separate System capability (008,010
units) — Individual, independent refrig­
eration systems. Operate circuit required
to maintain desired temperature. Provides
for stand-by operation. Less down time,
lowers service costs. Dual compressor
units with 2-stage heating and cooling —
operate with excellent part-load per­
formance on heating and cooling. Elec­
tric resistance heat is locked out above
40 F. This lowers demand charges and
costs Carrier Exclusive.
II Terminal strip — located in base unit
control box for easy connection to room
thermostat,
outdoor thermostat(s),
emergency heat control, economizer and
electric heat
SSGNAL-LOC HEAT PUMP PROTECTOR
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