Russell AA14-42B User Manual

All-Temp2BAll-Temp

201 Thomas French Dr ive Scottsboro AL 35769 • Tel: [phone] • Fax: [phone]

Low Profile
Unit Cooler

Publication No. 100.15
November, 2008

Air Defrost - 3,900 to 39,000 BTUH

Electric Defrost - 3,600 to 28,000 BTUH

Hot Gas Defrost - 3,600 to 28,000 BTUH

Small to Medium
Walk - Ins

Coolers & Freezer
Applications

Visit us on the Web: http://coldzone.htpgusa.com

Available with

EC Motors

High Efficiency / High Reliability

NSF

®

Sizes

There are 35 sizes available with 3,700 to 39,000 BTUH
at a 10° TD ranging from 740 to 4,980 cfm. One through
six fan models are available.

Housing

Rust-free, heavy gauge, textured Aluminum casing is light
weight yet durable. Each fan section is baffled to prevent
short cycling of the air. The unit is designed to mount flush
to the ceiling and meets all NSF requirements. Slotted
hangers are provided for easy installation. Drain fittings are
installed in the horizontal position to gain more usable head­room in low ceiling applications. The end panels now are
hinged to open up out for easy access to both the piping and
electrical ends. Optional expansion valves can be conveniently
installed inside the cabinet.

Coil

Seamless Copper tubes are staggered and mechanically
expanded into corrugated Aluminum fins and heavy gauge
tube sheets to achieve maximum heat transfer and strength.
Die formed fin collars provide even fin spacing. Fin spac­ings available are 4, 6, and 8 fins per inch. Sweat connections
are standard on all models and optional field installed flare
connection kits are available at no extra charge.

Motors

Shaded Pole motors are 1/20 HP, permanently lubricated, ball
bearing, with thermal overload protection. Available in 115V,
208/230V and 460V, single phase. Optional high efficiency
PSC and EC motors are available in 115V and 230V.

Fans

Heavy duty 12” Aluminum fans are balanced to provide
vibration-free operation. Our new low throw black plastic
fan guards have an improved air pattern. The optional
epoxy resin high throw fan guard moves air up to 50 feet.

Air Defrost

All models with the prefix “AA” are designed for use in cool­ers of 35°F and warmer. Complete air defrost systems for
off-cycle or timed air defrost are available from ColdZone.

Electrical

Available in 115V, 208/230V, and 460V (see pages 4 & 5). All
components are factory wired to convenient screw-type
terminal strips. A large compartment is supplied internal to
the unit for all electrical components and is easily accessible
by removing the end panel. All models are UL & cUL listed.

Electric Defrost

Available on all models with the prefix “AE”. Designed for
use where electric heat is used to defrost. Placement of the
heaters internal to the coil allows for an extremely rapid and
efficient defrost. This arrangement enables the heat to be
conducted through the fins from the center out for an even
defrost pattern. All heaters are wired to a terminal strip to
allow a quick field change-over from single phase to three
phase, 230V to 460V and vice versa. A lower heater is
installed close to the drain pan for fast, reliable drainage. A
defrost termination thermostat (DT) terminates the defrost
cycle when the temperature is satisfied. A heater safety
thermostat is installed to prevent heaters from overheating
above 75° in case of DT failure. All heaters are flexible and
can be easily replaced within 12 inches of the end of the
units. A fan delay thermostat is supplied to allow the warm
coil to cool after a defrost cycle prior to the fans turning on.
Complete electric defrost refrigeration systems are also
available from ColdZone.

Hot Gas Defrost

Two types available - Re-Evap models with the prefix “AH”
and reverse cycle with the prefix “AG”. All models include a
fixed DTFD factory wired and a hot gas drain pan circuit to
defrost the drain pan. On all Hot Gas models, the drain fit­ting is located on the left-hand rear of the unit when facing
the fan guards. Re-evap models include a Heat
Exchanger/Re-Evaporator shipped together with the unit for
field installation. Complete Re-Evap Refrigeration Systems
are available from ColdZone. Contact factor y for piping
information.

Features

The All-Temp²B is the original low profile unit cooler that has established an industry standard as being the all
purpose design for walk-in coolers, freezers and other applications. They feature an air draw-through design offering air,
electric and hot gas defrost models.

• High efficiency PSC or ECM fan motors

• Coated Aluminum fins or Copper Fins

• Baked white enamel housing

• Epoxy resin high throw guards for up to 50 ft.

• Reheat kits (not UL listed)

• Factory mounted expansion valves

Optional Features

r

2 7

Nomenclature

AA18-41B-A- E

All-Temp²B

Type of Defrost

A = Air Defrost
E = Electric Defrost
H = Hot Gas Re-evap
G = Hot Gas Rev. Cycle

BTUH in hundreds

Fins per inch

Number of fans

ColdZone’s EC motors

bring the benefits inherent to unit bearing motor design

to the refrigeration Unit Cooler market.

Voltage Code
A = 115V
B = 208/1/60
C = 230/1/60
D = 208-230/1/60
E = 208-230/3/60
F = 460/1/60

• Large oil resevoir

• Totally enclosed construction

• Journal bearing machined into the cast iron endbell

• Spiral grooved shaft pump guarantees positive oil circulation

• Threaded shaft uses hubless fan blade.

Subtract 6% from total savings for medium temperature air defrost units that run 24 hours per day.
SP = 1/20 HP Shaded pole motor (Standard motors)
PSC = 1/20 HP PSC motor (Optional motors available at additional cost)
EC = 50 Watt Electronically Commutated motor (Optional motors available at additional cost)

Energy Savings per Motor

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

Revision Code

Motor Type
S = Shaded Pole
E = ECM
P = PSC

Cond. Unit

Energy

Savings

$/Yr

Motor

Change

Std Motor

Power

Watts/Mtr

Change to

Motor

Power

Watts/Mtr

Reduced

Power

Watts/Mtr

Run

Time

Hrs/
Day

Motor

Energy

Savings

kWh/Yr

Motor

Energy

Savings

$/Yr

Reduced
Box Load
MBTU/Yr

SP to PSC 120 85 35 22 281 28 959 18 47 0.6
PSC to EC 85 47 38 22 305 31 1041 20 51 2.0

SP to EC 120 47 73 22 586 59 2000 38 97 1.3

Yearly
Saving

$ Per

MTR

Pay

back in

Yrs

$120

$100

$80

$60

$40

$20

Dollars Saved

$0

123456789101112

Yearly Savings per motor

Months of year

SP to
PSC
PSC to
EC