McDaniel Metals DHZECNJPGCHL Installation Manual
281-987-8400 • 281-987-9494 (fax)
1318 Buschong, Houston, TX 77039
www.mcdanielmetals.com
ECONOMIZER 101
Economizers are designed to provide “free” air condioning
when outside condions are appropriate. When the outside air
is cool and dry enough, the economizer automacally opens to
introduce the cool air to the interior space, thereby eliminang
the need to run the air condioning compressor.
If the outside air becomes too warm or humid, the economiz-
er automacally closes the fresh air damper and the compressor
engages to begin cooling the space mechanically.
If a two stage thermostat is used it is possible to use a combi-
naon of economizer and mechanical cooling to condion the
space.
The economizer can also be set to allow a minimum amount
of fresh air to enter the space when the equipment’s indoor
blower is operang.
Economizers are valuable tools to enhance indoor air quality,
save energy and prolong the life of the air condioning equipment.
SEQUENCE OF OPERATION
This sequence assumes employment of a single enthalpy
economizer using a two stage thermostat.
1. A call for cooling comes from room thermostat.
2. The enthalpy sensor determines if the atmospheric condi-
ons are conducive for using outside air for cooling. If YES,
go to step 3. If NO, or if outdoor air temperature rises above
enthalpy set point, go to step 4.
3. The outside air dampers open and modulate to maintain
a mixed air temperature (outside air + indoor air) of 53
degrees F. If the outdoor air is insucient to sasfy the
thermostat alone and a second stage of cooling is required,
the compressor starts and works in conjuncon with the
economizer
DHZECNJPGCHL
HORIZONTAL JADE ECONOMIZER FOR
DAIKIN DP**G/DM**, DP**C/H**M
AND GOODMAN GPG-APG****M, GPG/
H-APG/H****M LARGE CHASSIS UNITS
to cool the space. In a system with two compressors, if the
thermostat is sll not sased by the economizer and stage
1 compressor, the Jade control will energize the second
compressor. (Go to step 5.)
4. Outdoor air dampers open to minimum posion and the
compressor engages to provide mechanical cooling.
5. When the thermostat is sased the outside air dampers
return to a minimum posion.
INSTALLATION
1. Open carton and inspect contents for shortages and damage.
2. Disconnect power to the package unit.
3. On the M series unit, remove the large blower (GPG/DPG) or
evaporator (GPC/HM-DPC/HM) panel.
4. Aach the damper secon to the side of the unit over the
horiziontal return opening. (Figure 2)
5. Connect the return duct to the economizer. See the chart
below for the return opening size. (Figure 1)
6. Remove the jumper from the economizer plug in the unit.
7. Connect the jumper harness to the economizer and plug the
economizer into the unit female molex plug.
NOTE: Some single phase units do not come with a plug for the
economizer. The male plug from the economizer may be removed
and the unit hard wired per the wiring diagram included.
8. Feed the red power wire from the jumper harness to the con-
trol secon of the unit and connect it R on the terminal strip.
9. Feed the pink mixed air sensor wire into the blower secon
of the unit and secure the mixed air sensor to the side of the
blower toward the outer edge of the housing. (Figure 3)
10. Connect the pink wires to the mixed air sensor and the Jade
economizer control. (Figure 4)
11. Restore power to the unit.
12. Determine the minimum posion seng using the minimum
set point equaon on page two.
13. Seal connecon between the fresh air hood and plenum unl
water ght.
14. Install Goodman IRKT-01 Isolaon Relay Kit for heat pumps
per the instrucons included with the IRKT-01.
This product is warrantied to be free from defects due to workmanship or
materials, under normal use, for a period of sixty (60) months from date of
installation.
REV. G 7/31/2017
Figure 1
A B C D E F G
DHZECNJPGCHL
35 1/4 18 1/8 18 16 15 7/8 18 1/4 16 1/8
CONTENTS
1 Damper rack w/ economizer controls
1 Installaon/Component Manual
1 Mixed Air Sensor
The equaon below may be used to set the minimum posion.
The mixed air temperature and outside air temperature may be
discerned by looking at the status menu on the Jade controller.
MINIMUM SET POINT EQUATION
(To X OA) + (Tr X RA) = Tm
To = Outdoor air temperature
OA= Percent of outdoor air
Tr = Return air temperature
RA= Percent of return air
Tm= Resulng mixed air temperature
ACCESSORIES / CAPABILITIES
Dual Enthalpy - Requires an addional C7400 enthalpy
control installed in the return air duct.
Demand Control Venlaon - Requires a CO2 sensor.
IRKT-01 Isolaon relay kit is required for heat pump applicaons
Example:
Fresh air required is 10% outdoor air.
Outdoor air temperature is 60 degrees F.
Return air temperature is 75 degrees F.
(0.1 X 60) + (0.9 X 75) =
6.0 + 67.5 = 73.5
Mixed air temperature will be 73.5 degrees F when the
OA is 60 degrees F and the RA is 75 degrees F with 10%
outdoor air.
REV. G 7/31/2017
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