EarthLinked ACM-024C User manual

ACM-410D-IM (11/12) Copyright 2012 Earthlinked Technologies, Inc.
EarthLinked®
Auxiliary Cooling Module
Models ACM-024C thru ACM-072C
For R-410A
Installation Manual
CONTENTS
PAGE
Pre-Installation 3
Installation 5
•Placement 5
•
Refrigerant Connections
7
•
Electrical
10

ACM-410D-IM (11/12) Page 2
Disclaimer
The EarthLinked®Auxiliary Cooling Module is sold as a system component part and must be
properly sized and matched to the system compressor unit to provide the intended performance
and safe operation of the system. This component must be installed by a trained technician who
has successfully completed the ETI training class and passed the final examination. Installation
must be made in accordance with the instructions set forth within this manual.
Failure to provide installation by an authorized, trained installer in a manner consistent with this
manual will void the limited warranty coverage for the EarthLinked® system.
EarthlinkedTechnologies shall not be liable for any defect, unsatisfactory performance, damage or
loss, whether direct or consequential, relative to the design, manufacture, construction, application
or installation of other components in the EarthLinked® system.
Earthlinked Technologies, Inc.
4151 South Pipkin Road
Lakeland, Florida 33811
tel. [phone] ● fax [phone]
[e-mail] ● www.earthlinked.com

ACM-410D-IM (11/12) Page 3
Pre-Installation
This EarthLinked®Auxiliary Cooling Module is approved for use with EarthLinked®
space heating and cooling systems utilizing Series SC, SD, and SCW compressor units
operating with R-410A refrigerant.
This Auxiliary Cooling Module is sold as a system component and must be properly matched
with the compressor unit to provide the anticipated performance and safe operation of the
system. The table below lists the properly matched EarthLinked®Auxiliary Cooling Module
models with EarthLinked®compressor unit models.
Application of the Auxiliary Cooling Module (ACM) to R-410A systems may require the
use of two (2) field supplied Type ACR copper couplings to match the ACM refrigerant tube
connection size with the line set vapor tube size, See the table below to determine coupling
sizes.
Auxiliary Cooling
Module Model Compressor Unit Model Couplings
OD” x OD” (2 Req’d.)
ACM-024C -024 3/4 x 5/8
ACM-036C -036 3/4 x 3/4
ACM-048C -048 7/8 x 7/8
ACM-060C -060 1-1/8 x 7/8
ACM-072C -068 1-1/8 x 1-1/8
.

ACM-410D-IM (11/12) Page 4
The electrical and physical data for the Auxiliary Cooling Module is shown in the table below:
Auxiliary Cooling Module Electrical and Physical Data
Model Power Voltage
Range
Min.
Circuit
Amps
Max.
Fuse
Amps*
Fan Motor
Cabinet Dimensions
Full
Load
Amps
Rated
HP Nominal RPM Width, inches Depth, inches Height, inches
ACM-024C 230-1-60 207-253 0.9 5.0 0.7 1/10 1010 24.25 24.25 24.50
ACM-036C 230-1-60 207-253 0.9 5.0 0.7 1/10 1010 24.24 24.25 24.50
ACM-048C 230-1-60 207-253 0.9 5.0 0.7 1/10 1010 24.25 24.25 24.50
ACM-060C 230-1-60 207-253 1.4 5.0 1.1 1/5 1090 24.25 24.25 28.50
ACM-072C 230-1-60 207-253 1.4 5.0 1.1 1/5 1090 24.25 24.25 28.50
*Overcurrent Protection Device

ACM-410D-IM (11/12) Page 5
Installation – Auxiliary Cooling Module Placement
The Auxiliary Cooling Module unit is placed as shown in Figure 1 relative to other components in
the EarthLinked®system. The Auxiliary Cooling Module is located outdoors and will be
connected to the refrigerant line set outside the building.
Figure 1. Auxiliary Cooling Module Placement in EarthLinked®System
Location Requirements for the Auxiliary Cooling Module:
1. Within 40 Feet of the earth loop line set. Minimize refrigerant line lengths.
2. Higher than the compressor unit.
3. No more than 20 feet higher than the earth loop manifolds.
4. With proper clearances around the unit:
•48 inches minimum on top
•12 inches minimum on the three sides
•24 inches minimum on the service side
5. Away from windows, patios, decks, etc., where unit operation sounds may disturb the
occupants.

ACM-410D-IM (11/12) Page 6
6. On a solid, level mounting slab. The mounting slab should extend a minimum of 2 inches
beyond the sides of the Auxiliary Cooling Module. To reduce the possibility of noise
transmission, the mounting slab should NOT be in contact with or be an integral part of the
building foundation.
7. Where conditions or local codes require the Auxiliary Cooling Module to be attached to a
mounting pad or frame, tie down bolts should be used to fasten through the knockouts
provided in the Auxiliary Cooling Module basepan.
8. Elevate the Auxiliary Cooling Module per local climate and code requirements to provide
clearance above estimated snowfall level and ensure adequate water drainage of Auxiliary
Cooling Module. Use snow stand in areas where prolonged freezing temperatures are
encountered.
Do NOT Locate the Auxiliary Cooling Module:
1. On brick, concrete blocks or unstable surfaces
2. Near clothes dryer exhaust vents
3. Near sleeping area or near windows
4. Under eaves where water, snow or ice can fall directly in the unit
5. Within clearance less than 2 Feet from a second unit
6. Within clearance less than 4 Feet on top of unit
7. Within the minimum distance the Auxiliary Cooling Module can be installed from the
property line, where local zoning ordinances apply.

ACM-410D-IM (11/12) Page 7
Installation – Refrigerant Connections
.
Figure 2. Auxiliary Cooling Module Refrigerant Connections
The Auxiliary Cooling Module has two refrigerant connections on the service side of the unit as
shown in Figure 2. The connections are the same size as each other. These sizes are listed in
Figure 2 for each Auxiliary Cooling Module model. Each connection is identified with a label saying
“To compressor” or “To earth loops”.
The refrigerant connections have caps brazed on at the factory. They should be un-brazed at the
time that tubing is to be connected to the Auxiliary Cooling Module.
After locating the Auxiliary Cooling Module as noted earlier, a trench 3 to 4 Feet deep is to be
excavated running from the Auxiliary Cooling Module to the earth loop line set. If the lines to and
from the Auxiliary Cooling Module are to be run parallel to and within 10 Feet of the building
foundation or basement wall, both lines are to be insulated with ½” wall thickness Armaflex®or
InsulTube®tubing insulation, cased within a 4” PVC pipe. The PVC pipe must be a minimum of 3
Feet from the building foundation or wall. This is illustrated for a typical application in Figure 3.

ACM-410D-IM (11/12) Page 8
Figure 3. Auxiliary Cooling Module Refrigerant Piping
A top view of typical Auxiliary Cooling Module and line set vapor line connections are illustrated
in Figure 4.
Figure 4. Top View of Line Set Connections

ACM-410D-IM (11/12) Page 9
All refrigerant piping joints and connections in the EarthLinked® heating and cooling system,
including the Auxiliary Cooling Module, line sets and earth loop system are to be brazed with
15% silver content brazing alloy, utilizing the NITROGEN BRAZING PROCESS.
IMPORTANT!
NITROGEN BRAZING PROCESS
PURPOSE:
Utilize the NITROGEN BRAZING PROCESS on all brazed refrigerant piping
connections. This process eliminates oxidation products from inside joint surfaces.
TECHNIQUE:
“Trickle” nitrogen gas at 1-2 psi pressure through the joint area being brazed, to displace
the oxygen. When oxygen has been displaced, turn off the nitrogen and relieve the
pressure at the joint to atmospheric prior to brazing.
CONSEQUENCES:
Failure to displace oxygen with nitrogen at the brazed joint will result in particulate
matter being released into the system. The result is discoloration of refrigerant oil,
contamination of the system and possible system failure.

ACM-410D-IM (11/12) Page 10
Installation - Electrical
:
1. After turning “OFF” power to all EarthLinked® and field supplied system components at the
appropriate breakers remove the front and top panels of the compressor unit cabinet.
2. Reference Figure 5 for compressor unit electrical box. Remove available hole covers from
the front of the electrical box.
Figure 5. Compressor Unit Electircal Box
3. Install fuse holders into existing fuse holes with screws provided. Install fuses in fuse
holders.

ACM-410D-IM (11/12) Page 11
4. Install two-pole terminal strip inside electrical box and fasten into existing hole with screw
provided.
5. Attach pink wire with piggyback connector onto “T2” (for single phase) or “T3” (for three
phase) on the compressor contractor and the other connector to the center terminal of the
bottom fuse holder.
6. Attach the gray wire with the piggy back connector onto “L1” on the compressor contactor,
and the other connector to the center terminal of the top fuse holder.
7. Attach the pink wire with connector to the collar connection of the bottom fuse holder, and
tighten the terminal screw of the terminal block onto the stripped end of the pink wire.
8. Attach the gray wire with connector to the collar of the top fuse holder, and tighten the other
terminal screw of the terminal block onto the stripped end of the gray wire.
9. Run high voltage wiring from the two-pole terminal strip in the electrical box out of the
grommeted end hole of the electrical box and through the conduit connection of the
compressor cabinet, to the Disconnect shown in Figure 6, and from the Disconnect to the
Auxiliary Cooling Module, using flexible conduit.
10. After running the power wiring in flexible conduit to the Auxiliary Cooling Module, remove
the Auxiliary Cooling Module electric box cover.
11. The Auxiliary Cooling Module control box contains a Ranco pressure control that has been
factory set to energize the Auxiliary Cooling Module at a predetermined compressor
discharge pressure.
DO NOT ATTEMPT TO ADJUST THIS CONTROL!
Figure 6 illustrates the electrical connections that are to be made at the ACM electric box
with the two high voltage leads from the compressor unit.

ACM-410D-IM (11/12) Page 12
Figure 6. Auxiliary Cooling Module Field Wiring
12. Check all wiring and electrical connections to ensure proper routing and good
contact before restoring electric power, evacuating and recharging system in accordance
with the appropriate EarthLinked®system Installation Manual.