Russell HEA-1A User Manual

Heavy Duty

®

Unit Cooler

Publication No. 101.8
February, 2009

Air Defrost - 16,400 to 273,000 BTUH

Electric Defrost - 11,800 to 248,000 BTUH

Hot Gas Defrost - 11,800 to 248,000 BTUH

3050 Enterprise St., P.O. Box 1030, Brea, CA 92822-1030 • Tel: [phone] • Fax: [phone]

Large Walk-Ins
and Warehouses

Cooler & Freezer
Applications

Visit us on the Web at: www.rus sellc oil.com

Features

APPLICATION - Ultra-Temp unit coolers are ideally

suited for a wide range of large coolers, freezers
and blast freezers. The U*U and U*L models are
designed for use below +25°F room temperature.
The U*M and UAH models are designed for coolers
in the medium and high temperature ranges.

SIZES - There are 61 sizes available, ranging in
capacity from 11,800 to 273,000 BTUH @ 10°TD,
and ranging in air flow from 2,720 to 29,900 CFM.

HOUSING - Rust-free, heavy gauge textured
Aluminum; lightweight and durable. Air and electric
defrost models have hinged drain pans to allow for
convenient servicing and maintenance (Hot Gas
drain pans are not hinged).

LIFTING LEGS - 2 fan models and larger are
shipped upright with removable lifting legs, allowing
the unit to be installed quickly, and easily with a
forklift. Slotted hangers are provided for fast
installation.

COIL - Seamless copper tubes are mechanically
expanded into heavy gauge corrugated Aluminum
fins to assure maximum heat transfer. Die formed
fin collars are provided for accurate fin spacing.
Hangers are fastened directly to the tube sheets of
the coil to provide high structural strength. All units
are dehydrated, sealed and shipped with a nitrogen
holding charge.

REFRIGERANTS - For use with direct expansion,
R-22, R-404A, R-502 and R-507. Specify refrigerant
when ordering. A separate compartment is provided
for all refrigeration connections, allowing ample
room for internal mounting of expansion valve(s).
Ultra-Temps can also be used for chilled water or
glycol solutions, contact factory for selection.

ELECTRICAL - Available in 115/1, 208/230/1,
208/230/3, 460/1 and 460/3 (see page 10). Ultra­Temps can also be operated on 220/1/50, 220/3/50,
380/1/50, and 380/3/50 power (contact factory for
details). All components are factory wired to
convenient screw-type terminal blocks. A large
compartment is supplied for all electrical components
and is easily accessible by removing the end panel.

AIR DEFROST - Available on UAM and UAH series
only for use in coolers at +35°F and above.
Complete Air Defrost systems are available from
Russell.

ELECTRIC DEFROST - Available on all but the UAH
models. Placement of the heaters within the
refrigeration coil allow for a more efficient and rapid
defrost cycle. This arrangement enables heat to be
conducted from the center of the core out, for a more
even defrost pattern. All heaters are factory wired to
screw-type terminal blocks, allowing for a quick field
change over from 1 to 3 phase or 230V to 460V and
vice versa with the use of jumpers. An adjustable,
remote bulb defrost termination and fan delay
(DTFD) is mounted and wired. Drain pans are
heated for fast, reliable drainage. Timer and
contactors are available as options, see page 11.
Complete Electric Defrost systems are available from
Russell.

HOT GAS RE-EVAP DEFROST - Available on all but
the UAH models. Includes an adjustable defrost
termination and fan delay (DTFD), factory installed.
A hot gas drain circuit is supplied, thus eliminating
the need for electric heat and additional wiring. A
Heat Exchanger/Re-Evaporator is supplied with
every unit. Refer to the current Technical Bulletin HG
for piping. Complete Hot Gas Re-Evap systems are
available from Russell, contact factory.

FANS - Powerful, heavy-duty Aluminum fans are
individually balanced to provide vibration-free
operation. Wire fan guards are epoxy coated for
corrosion resistance. Optional air straighteners are
available for increased air throw.

MOTORS - All standard motors are high efficiency
PSC, ball bearing type, life lubricated and thermally
protected. U*U and U*L models use 3/4 HP, 1075
RPM or 3/4 HP, 1625 RPM motors. U*M and UAH
models use 1/3 HP or 3/4 HP, 1075 RPM motors.
Optional EC motors are now available for all Ultra­Temp models.

HOT GAS REVERSE CYCLE DEFROST - Available
on all but the UAH models. Includes an adjustable
defrost termination and fan delay. (DTFD) factory
installed. A hot gas drain pan circuit is supplied, thus
eliminating the need for electric heat and additional
wiring. Refer th the current Technical Bulletin HG
For piping. This unit is also used for Alternating
Evaporator Systems.

2 11

Electric Defrost

Electrical Compartment

A. Defrost control (DTFD)
B. DTFD sensing bulb
C. Fin heater (typical)
D. Field wiring terminal strips
E. Fan motor capacitors

D

C

E

B

A

Refrigerant Connection
Compartment

Refrigerant End Compartment

(Larger two-circuit Hot Gas coil shown)

A. Hot gas supply (from drain pan)
B. Hot gas inlet to coil (two-pipe)
C. Hot gas inlet to coil (three-pipe)

Hot gas outlet from coil (two-pipe)

D. Liquid inlet from TX valve
E. Suction connection
F. External equalizer line

Options

• Copper fins.

• Coated fins (air and hot gas models only).

• Galvanized steel casing.

F

D

B

C

E

D

A

E

F

• High pressure propeller fans (up to 0.5” external pressure).

• Inherent 3 phase motors.

• Ultra low temperature motor grease for applications down to -60°F suction

temperature.

• Insulated drain pans.

• Custom circuiting for chilled water or glycol applications.

• High air throw fan guards.

B

A

LIQUID

SUCTION

B

A

SUCTION

LIQUID

Motor

HP and

R

PM

Standard PSC

M

otor Input

Power

Watts/Mtr

Optional EC

M

otor Input

Power

Watts/Mtr

Reduced

P

ower

Consumption

Watts/Mtr

Run Time

Hrs/Day

Motor

E

nergy

Savings

kWh/Yr

Motor

E

nergy

Savings

$/Yr

R

educed

Box Load

MBTU/Yr

Cond. Unit

E

nergy

Savings

kWh/Yr

Cond. Unit

E

nergy

Savings

$/Yr

Y

early
Savings
$/Motor

P

ay-

back

Yrs

1

/3 1075 357 225 132 22 1060 106 3,617 695 70 176 0.9
3/4 1075 850 495 355 22 2851 285 9,726 1,870 187 472 0.4
3/4 1625 717 580 137 22 1100 110 3,754 722 72 182 1.0

Energy Saving per Motor

by Changing to more Efficient Unit Cooler Motors (based on Energy Cost of $0.10 per kWh)

Air Throw

Air throw is affected by installation variables. Optimum air throw is obtained by high ceiling with no
interference from beams, product or return air restrictions.

MODEL WIRE FAN GUARD

U*U / U*L

U*M / UAH

60 - 80 feet
50 - 70 feet

FAN GUARD / AIR

STRAIGHTENER

80 - 100 feet

70 - 90 feet

Nomenclature

U•U1–118 – D P

MOTOR TYPE

Ultra-Temp

A = Air Defrost (M & H) only
E = Electric Defrost
H = Hot Gas Re-Evap

(U, L & M only)

G = Hot Gas Rev. Cycle

U= 4 Fins/Inch (Freezer)
L=6 Fins/Inch (Freezer)
M = 6 Fins/Inch (Cooler)
H= 8 Fins/Inch (Cooler)

BTUH in Hundreds

Number of Fans

4 9

VOLTAGE CODE

P = PERM. SPLIT

CAPACITOR

E = EC MOTOR

A = 115/1/60
D = 208-230/1/60
E = 208-230/3/60
F = 460/1/60
G = 460/3/60
J = 575/3/60