Condensate Removal (Standard)
RetroAire replacement unit, cooling operation, is designed
to eliminate condensate by slinging it onto outdoor coil.
• Condensate drains through the bulkhead to the area
near the outdoor fan.
• Unit as part of normal operation produces condensate
and collects it in the unit's base pan. It is picked up
there by the outdoor fan slinger ring and deposited onto
the condenser coil. This improves the unit’s efficiency
by maintaining reduced refrigeration system pressures.
• Base pan has overflow notches. If too much condensate
is produced notches allow condensate to flow out of the
base pan and into the wall sleeve out of the building.
Random Start Feature (Standard)
Random start feature is initiated on initial power-up or
after a power interruption.
• Controller adds a random time delay (from 5–120
seconds) on start-up, preventing compressor from
starting.
• This staggers the start of multiple units in a single
facility, preventing a large surge if all units started at
the same time.
Anti-Short Cycle Timer (Standard)
Microprocessor control uses this timing to prevent
compressor short-cycling.
• When the compressor cycles off on heating or cooling
call, controller starts a 180-second timer.
• Compressor is not allowed to start until this time has
elapsed.
• On initial power-up or after a power failure, this timing
occurs after the random start timing.
Power Cord With Integral Safety Protection
(Standard)
All PTAC/PTHP units rated 250V or less are equipped with
power cord with integral safety protection as standard.
• Providing personal shock protection as well as arcing
and fire prevention. Device is designed to sense any
damage in line cord and disconnect power before a fire
can occur.
• Tested in accordance with Underwriters Laboratories,
cord set offers a unique “passive” operation, meaning
unit does not require resetting if main power is
interrupted.
FEATURES
Hydronic Heating (Optional)
Hydronic heat package may be selected in lieu of electric
heat. Heating operation is same as that of units with
electric heat.
Aquastat Connection (Optional)
All replacement PTAC/PTHP's with hydronic heat are
supplied with standard line volt Aquastat connection. Field
installed Aquastat delays fan operation until hydronic coil
reaches temperature of 100°F (38°C).
Motorized Fresh Air Damper (Optional)
Motorized fresh air damper allows fresh air into the space
to be conditioned. When the Fresh Air switch is in "YES"
position, damper door is open and allows fresh air into
the space. This is only available when the indoor fan is
on. When damper door switch is in the "NO" position, the
damper door is closed and does not allow air in the space.
Optional Wall-Mounted Thermostats
PTAC compatible thermostats.
• Manufacture offers single stage, cool/heat, thermostat
that can be used in all RetroAire cooling, heating or
heat pump applications.
• Thermostat has adjustable setpoint range of between
45°F (7°C) and 90°F (32°C).
• For heat pumps manufacture offers a 2 stage heat/cool
thermostat which allows for emergency heat.
Selecting A Thermostat
When selecting a thermostat for the PTACchoose a single
stage heat/cool, 24V thermostat.
Straight cooling with electric heat or hydronic heat (R10C
— PTAC's) oling/electric heat system. Thermostat should
have “
R
”, “
Y
”, “
W
”, "C" and “
G
” terminals.
Heat Pump With Electric Heat (R__H - PTHPS)
Select a thermostat compatible with cooling/single-stage
heat/heat pump system.
Thermostat should have "R", "Y", "O" and "G" terminals.
RetroAire units are single stage heating only.
Electric heat and heat pump will not operate
simultaneously.
11
Made in USA
P/N 240010598, Rev. A [05/12/2014
]
