dth=100%>
Yahoo! is not affiliated with the authors of this page or responsible for its content.
Installation and Operating Instructions 1



Installation
and
Operating Instructions











Vertical and Horizontal
Forced Air/Hydronic
GV/GH 36 Thru 67 Series





































GeoSource DualTEK



Licensed under U.S. Patent Number 4,856,578
Contactor
GeoSource DualTEK Horizontal Unit
Air Coil
Blower
Air Pad
Controller
Reversing
Valve
Transformer
Scroll
Compressor
Blower
Contactor
Expansion
Valve
Scroll
Compressor
Air Pad
Air Coil
Transformer
Controller
Reversing
Valve
Desuperheater
(Optional)
GeoSource DualTEK Vertical Unit
Air Filter 1
TABLE OF CONTENTS

Section

Title Page
I.
Introduction to ECONAR Heat Pumps . . . . . . . . . . . . . . . . . . . . . . . . . . 2

II.
Unit Location/Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2




III.
Duct System/Blower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

IV.
Hydronic Side Heat Exchangers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
A. Radiant Floor Heating
B. Baseboard
Heating
C. Other
Applications
D. Temperature
Limitations

V.
Applications of Hydronic Side Heat Exchangers . . . . . . . . . . . . . . . . . . . 5
A. Storage
Tanks
B. Hydronic Side Circulators
C. Circulation
Fluid
D. Expansion
Tanks
E. Application
Diagrams


VI.
Earth Loop Water Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9





A. Closed Loop Applications

B.


Open
Loop
Applications




1) Open Loop Freeze Protection Switch

2) Water Coil Maintenance
a. Freeze Cleaning
b. Chlorine Cleaning
c. Miratic Acid Cleaning


VII.
Condensate Drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12


VIII. Unit Sizing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
A. Earth Loop Configuration and Design Water Temperatures
B. Hydronic Side Heat Exchanger Operating Temperatures
C. Building Heat Loss/Heat Gain
D. Temperature
Limitations


IX.
Electrical Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14


X.
24 Volt Control Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
A. Transformer
B. Thermostat/Aquastat
C. Controller
1) Blower Operation
2) Earth Loop Pump Initiation
3) Compressor
Operation
4) 4-Way Valve Control
5) Compressor
Lockouts
6) Compressor
Anti-Short-Cycle
7) System
Diagnostics
8) Forced Air/Hydronic Priority
9) Overflow
Detection


XI.
Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17



XII.
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18



A. Filter

B. Lockout Lights

C. Preseason Inspection




XIII. Thermostat Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18


XIV. Troubleshooting Guide For Unit Operation . . . . . . . . . . . . . . . . . . . . . . 19


XV.
Troubleshooting Guide For Lockout Conditions . . . . . . . . . . . . . . . . . . 22



XVI. Additional Figures and Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22


XVII. Desuperheater (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 2
I. INTRODUCTION TO
ECONAR HEAT PUMPS

ECONAR Energy Systems, Corp. has been producing
geothermal heat pumps in Minnesota for over fifteen
years. The cold winter climate has driven the design of
ECONAR Energy System's heating and cooling
equipment to what is known as a "Cold Climate"
geothermal heat pump. This cold climate technology
focuses on maximizing the energy savings available in
heating dominated regions without sacrificing comfort.
Extremely efficient cooling, dehumidification and
optional domestic hot water heating are also provided in
one neatly packaged system.

Geothermal heat pumps get their name from the transfer
of heat to and from the earth. The earth coupled heat
exchanger (geothermal loop) supplies the source energy
for heating and absorbs the discharged energy from
cooling. The system uses a compression cycle, much like
your refrigerator, to collect the earth's energy supplied by
the sun and uses it to heat your home. Since the process
only moves heat and does not create it, the efficiencies are
three to four times higher than the most efficient fossil
fuel systems.

ECONAR produces three types of geothermal heat
pumps: forced air heat pumps, which transfer heat from
water to air; hydronic heat pumps, which transfer heat
from water to water; and GeoSource DualTEK heat
pumps, which incorporate the hydronic heating of a water
to water unit into a forced air unit. This guide discusses
the GeoSource DualTEK unit (U.S. Patent Number
4,856,878).

Safety and comfort are both inherent to, and designed into
ECONAR Energy System's geothermal heat pumps.
Since the system runs completely on electrical energy,
your entire home can have the safety of being gas free.
The best engineering and quality control is built into
every ECONAR heat pump built. Proper application and
correct installation will assure excellent performance and
customer satisfaction.

ECONAR's commitment to quality is written on the side
of every heat pump we build. Throughout the building
process the technicians that build each unit sign their
names to the quality assurance label after completing their
inspections. As a final quality test, every unit goes
through a full run test where the performance and
operation is verified in both the heating and cooling
modes. No other manufacturer goes as far as to run a full
performance check to assure system quality.

** IMPORTANT**
Service of refrigerant based equipment can be hazardous
due to system pressure and 230 volt electrical energy.
Only trained or qualified service personnel can install,
repair or service refrigerant equipment.
! Warning -
Turn off the main switches before
performing service or maintenance to this unit. Electrical
shock can cause personal injury. The installer is
responsible to see that all local electrical, plumbing,
heating and air conditioning codes are followed.

"Note: The Hydronic side of the GeoSource DualTEK
utilizes a single-walled heat exchanger, and is not
intended for use with potable water.

II. UNIT LOCATION/
MOUNTING

Locate the unit in an indoor area where the ambient
temperature will remain above 45
o
F. Servicing of the
heat pump is done primarily from the front. Rear access
is very desirable and should be provided when possible.
A field installed drain pan is required under the entire unit
where accidental water discharge could damage
surrounding floors, walls or ceilings.

#CAUTION
Do not tip units on their side during
transportation or installation, or severe internal damage
may occur.

Units must be mounted on a vibration-absorbing pad
slightly larger than the base to provide isolation between
the unit and the floor. Water supply pumps should not be
hard plumbed directly to the unit with copper pipe; this
could transfer vibration from the water pump to the
refrigeration circuit, causing a resonating sound. Hard
plumbing could also transfer vibration noise from the unit
through the piping to the living space.

"Note: Keep all doors and screws installed on the unit
while moving the unit and installing ductwork. This will
help ensure that the unit stays square, allowing for easier
removal of the doors after the ductwork is attached.

#CAUTION
- Before driving screws into the cabinet,
check on the inside of the unit to be sure the screw will
not hit electrical or refrigeration lines.

III. DUCT SYSTEM/BLOWER

For the duct system, metal ductwork should be used.
Flexible connectors are required for discharge and return
air duct connections on a metal duct system. For
acceptable duct sizes, see Table 1.

If the duct system is installed in an uninsulated space, the
metal ductwork should be insulated on the outside to
prevent heat loss and to absorb noise.

If the unit is connected to existing ductwork, this
ductwork must have the capacity to handle the air volume
required by the heat pump. Undersized ductwork will 3
cause noisy operation and poor operating efficiencies due
to lack of airflow.