2
Ruud Heating, Cooling and Water Heating
TWO-STAGE SCROLL
®
COMPRESSOR
The scroll compressor is the key to efficiency for this Ruud
model. It’s the latest in high-efficiency compressor technology.
The advanced scroll compressor
offers low noise and vibration
characteristics and features
tolerance to liquid refrigerant and
system contamination. The scroll
also has low start torque,
eliminating start problems in the
field. And its unique design
enables the UPRL- JEZ Heat
Pump to perform efficiently,
quietly and reliably. All models
have a 10-year compressor
warranty as standard.
STANDARD FEATURES
UPRL- JEZ Heat Pumps
1.
2-stage operation in both cooling and heating mode.
2.
Scroll compressor is hermetically sealed and incorporates
internal high temperature motor overload protection, and
durable insulation on the motor windings. It is externally
mounted on rubber grommets to reduce vibration and noise.
3.
Compressors have an internal pressure relief assembly to
protect against excessive pressure differential.
4.
All refrigerant connections are on the exterior of the unit,
located close to the ground for neat appearing installations.
5.
Cabinet is constructed of powder painted galvanized
steel. The full wraparound louvered grille protects the coil
from damage.
6.
Copper Tube—Aluminum Fin coils are used on all models.
7.
The control box is located in the top corner of the cabinet
providing for easy access through a service panel.
8.
Service valves are standard on all models.
9.
Field connections for power and control wiring are kept
separate.
10.
Every unit is factory charged and run-tested.
11.
Separate compressor compartment for easy service access.
12.
Drawn, painted base pan for extra corrosion resistance and
sound reduction.
13.
The
UPRL- JEZ
has a 10 year limited parts warranty, plus a
10 year conditional unit replacement warranty. See the
General Terms of Limited Warranty for more details.
14. Hard Start Kits
—Standard on all JEZ models.
15.
Enhanced compressor sound wrap is standard.
16.
Control Box Cover.
17.
The UPRL- JEZ is shipped with a liquid line filter drier,
(not-installed).
18.
The UPRL- JEZ features factory-installed auto-reset low and
high pressure controls.
FEATURES & BENEFITS OF THE
COMFORT CONTROL SYSTEM
™
■
The Ruud Exclusive 7 Segment LED Display easily shows
system status codes and conditions.
■
A Sealed Switch replaces the standard
contactor and features optical control
and latching
mechanism.
The
sealed switch pre-
vents infiltration of
insects and dust.
A minimal switch-
ing arc, by the
optical control, offers greater reliability.
The latching mechanism consumes less
power while reducing chatter.
■
The Status Indication and System Diagnostics feature ther-
mostat communication capability, built-in diagnostics, high
& low voltage monitoring and high & low switch monitoring.
The thermostat communication capability alerts the homeowner
of any necessary service requirements. Faster, more accurate
service is provided with the built-in
diagnostics, by providing the HVAC
professional with dependable infor-
mation. Compressor reliability is
increased with the high and low
voltage monitoring feature. In addi-
tion, high and low pressure-switch
monitoring prevents the system from
operating when damage could occur.
■
The Fault Recall feature will allow for the last six fault-codes
to be displayed, and will retain these codes even if power
failure occurs.
■
Built-in short-cycle protection allows the compressor to
restart easily without removing the oil from the compressor.
■
A 30-second minimum run-time for every compressor call
allows the oil to return to the compressor.
■
Active Protection
prevents the compressor from operating if
damage could occur.
■
The compressor and fan are
controlled independently,
which reduces the starting load
and light dimming.
■
A manual push-button is
offered to operate the compres-
sor and fan for 5 seconds to
allow for an operation check.
■
In order to save time and
money, replacement automotive fuses can be utilized
instead of replacing the entire control board.
All controls and compressor
are accessible for servicing by
removal of the service panel.
