EarthLinked HWM-18B Instruction manual

HWM-407CH-IOM (09/13) Copyright 2013 Earthlinked Technologies, Inc
EarthLinked®
Hydronic Water Module
Installation, Operation & Maintenance Manual
for
R-407C Heat/Cool and Cool Only Systems

HWM-407CH-IOM (09/13) Page 2
Disclaimer
This manual contains instructions for the EarthLinked®Hydronic Water Module which is
combined with other EarthLinked®system components, field specified hydronic heating
and chilled water cooling components, thermostats, storage water heaters, storage water
tanks and associated fittings, controls and piping.
EarthLinked®Technologies manufactures and sells only the EarthLinked®system
components and the performance information contained herein is based on performance
of EarthLinked®Technologies’ supplied Products.
Therefore, EarthLinked®Technologies 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 the above mentioned field
specified items.
Proper installation and servicing of the EarthLinked®Heating and Cooling System is
essential to its reliable performance. All EarthLinked®systems must be installed and
serviced by an authorized, trained technician who has successfully completed the
training class and passed the final examination. Installation and service must be made
in accordance with the instructions set forth in this manual and the current EarthLinked
Heating and Cooling Installation, Operation and Maintenance Manual. Failure to provide
installation and service by an authorized, trained installer in a manner consistent with the
subject manuals will nullify the limited warranty coverage for the system.
Earthlinked Technologies, Inc.
4151 South Pipkin Road
Lakeland, Florida 33811
tel. [phone] ● fax [phone]
[e-mail] ● www.earthlinked.com
CSI # 23 80 00

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Table of Contents
1. Inspection/Pre-Installation........................................................................................................5
A. Inspection...........................................................................................................................5
B. Pre-Installation...................................................................................................................6
2. General System Layout............................................................................................................7
3. Applications .............................................................................................................................8
4. The Primary Circuit ................................................................................................................10
A. Plumbing..........................................................................................................................10
B. Antifreeze Protection........................................................................................................11
C. Water Quality ...................................................................................................................13
D. Storage Water Heater Sizing and Connections ................................................................14
E. Circulating Pump, Piping, Strainer and Flowmeter ...........................................................15
F. Refrigerant Piping ............................................................................................................17
5. Controls and Electrical...........................................................................................................18
A. Hydronic Heating and Chilled Water Cooling....................................................................18
B. Chilled Water Cooling.......................................................................................................19
C. HWM Freeze Protection Thermostat................................................................................21
6. Start-Up .................................................................................................................................22
7. Heat Exchanger Maintenance................................................................................................24
8. Tools and Equipment.............................................................................................................28
Index .......................................................................................................................................29

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List of Figures
Figure 1. Matching Component Model Numbers................................................................................5
Figure 2. General System Layout ......................................................................................................7
Figure 3. Typical Chilled Water Cooling and Radiant Panel Hydronic Heating System ......................8
Figure 4. Typical Chilled Water Cooling System ................................................................................9
Figure 5. Primary Circuit for EarthLinked®System with HWM..........................................................10
Figure 6. Typical HWM Primary Circuit Plumbing.............................................................................11
Figure 7. Propylene Glycol Freeze Protection Table.......................................................................12
Figure 8a. Hydronic System Water Quality Parameters...................................................................13
Figure 8b. Storage Tank Capacities and Pipe Sizes ........................................................................14
Figure 8c. Typical HWM Piping Illustration.......................................................................................15
Figure 9. Hydronic Water Module (HWM) ........................................................................................16
Figure 10a. Minimum Water Pipe, Fitting and Strainer Sizes to Storage Water Heater.................... 17
Figure 10b. Flowmeter Kit................................................................................................................17
Figure 10c. (Part 1 of 2) Electrical Field Wiring –
Hydronic Heating and Chilled Water Cooling (HWM)..........................................................18
Figure 10c. (Part 2 of 2) Electrical Field Wiring –
Hydronic Heating and Chilled Water Cooling (HWM)..........................................................19
Figure 10d. (Part 1 of 2) Electrical Field Wiring – Chilled Water Cooling (HWM)............................. 20
Figure 10d. (Part 2 of 2) Electrical Field Wiring – Chilled Water Cooling (HWM)..............................20
Figure 10e. Three-Step Electrical Installation for Freeze Protection Thermostat.............................. 21
Figure 11. Maximum Operating Conditions (R-407C) ......................................................................23
Figure 12. Minimum Heat Exchanger Water Flow Rates..................................................................24
Figure 13. Minimum Heat Exchanger Propylene Glycol/Water Solution Flow Rates ........................25
Figure 14. HWM Heat Exchanger Cleaning Set-up..........................................................................26

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1. Inspection/Pre-Installation
A. Inspection
Upon receipt of the equipment, carefully check the shipment against the bill of lading.
Reference EarthLinked®matching system component model numbers in Figure 1. Make
sure all units have been received and model numbers are the same as those ordered.
COMPRESSOR UNIT
MODEL/CAPACITY
R-407C
HYDRONIC WATER
MODULE MODEL
-018 (18,000 BTUH)
HWM-18B
-024 (24,000 BTUH)
HWM-24B
-030 (30,000 BTUH)
HWM-30B
-036 (36,000 BTUH)
HWM-36B
-042 (42,000 BTUH)
HWM-42B
-048 (48,000 BTUH)
HWM-48B
-060 (60,000 BTUH)
HWM-60B
-072 (72,000 BTUH)
HWM-72B
Figure 1. Matching Component Model Numbers
Inspect the carton or crating of each unit, and inspect each unit for damage. Assure the
carrier makes proper notation of any shortages or damage on all copies of the freight bill
and he completes a common carrier inspection report. Concealed damage not discovered
during unloading must be reported to the carrier within 15 days of receipt of shipment. If not
filed within 15 days, the freight company can deny the claim without recourse. Note: it
is the responsibility of the purchaser to file all necessary claims with the carrier.

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Equipment should be stored in its packaging in a clean, dry area. Store equipment in an
upright position at all times. Equipment is to be stacked in accordance with the notation on
the packaging. DO NOT remove equipment from shipping cartons until equipment is
required for installation.
Cover equipment on the job site with either shipping cartons, vinyl film or an equivalent
protective covering. In areas where painting, plastering and/or spraying has not been
completed, all due precautions must be taken to avoid physical damage to the equipment
and contamination by foreign material. Physical damage and contamination may prevent
proper start-up and may result in costly equipment clean up. Examine all equipment before
installing.
B. Pre-Installation
Prior to installing the Hydronic Water Module and other EarthLinked®space heating and
cooling system above-ground components, you will need tools and equipment listed in
Section 8 to properly install the system.
Installation of the Hydronic Water Module must be done in accordance with this manual and
the EarthLinked®Technical Manual.
Prepare the Hydronic Water Module (HWM) for installation as follows:
1. Compare the data on the unit nameplate or packaging with ordering and shipping
information to verify the correct unit has been shipped (See Figure 1.)
2. Keep the HWM covered with the packaging until installation is begun and all plastering,
painting, etc. is finished.
3. Verify refrigerant tubing is free of kinks or dents.
4. Inspect all electrical connections. Connections must be clean and tight at the terminals.

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2. General System Layout
Guidelines for the general layout of the Hydronic Water Module and other EarthLinked®
system components are shown in Figure 2.
Figure 2. General System Layout

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3. Applications
A typical application of the Hydronic Water Module to a chilled water cooling and radiant
panel hydronic heating system is illustrated in Figures 3.
Figure 3. Typical Chilled Water Cooling and Radiant Panel Hydronic Heating System

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A typical application of the Hydronic Water Module to a chilled water cooling system is
illustrated in Figures 4.
Figure 4. Typical Chilled Water Cooling System

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4. The Primary Circuit
A. Plumbing
The primary circuit in a typical HWM installation is shown in Figure 5.
Figure 5. Primary Circuit for EarthLinked®System with HWM
The Hydronic Water Module primary circuit water solution plumbing must be installed
consistent with local codes and industry practice. At a minimum, the HWM should have the
fittings as shown in Figure 6. The minimal fittings shown in Figure 6 will facilitate maintaining
and servicing the Hydronic Water Module. Additional fittings may be required to satisfy local
codes and other hydronic system requirements.