Shipping and Packing List
Package 1 of 1 contains:
- 1- Sensor
- 2- #6-32 X 7/8" Screws
- 1- P104 Wiring harness (used for outdoor air sensing only)
- 1- P105 Wiring harness (used for return air sensing only)
- 1- J105 Wiring harness (KG/KC/KH092-300S only)
- 1- Bracket (LG/LC/LH/LD/KG/KC/KH 078-152 units only)
- 1- Wire tie
- 1- #10-16 X 5/8" SDST screw
IMPORTANT
Two kits must be installed if differential enthalpy sensing is specified.
Check packaging for shipping damage. Contact the last carrier immediately if any shipping damage is found.
Application
Sensors provide input to determine free cooling suitability. The enthalpy sensor provided in this kit senses both sensible temperature and humidity. See TABLE 1 for usage.
This kit applies to LGM/LCM, LGT/LCT/LHT/LDT, LGH/LCH, LGX/LCX/LHX, KG/KC/KH, ZG/ZC/ZH, SCH/SGH/SHH/SDH, QG/QH/QC unit standard performance economizers and, LGM/LCM/LGH/LCH high performance economizers. A separate kit is used for KG/KC/KH, ZG/ZC/ZH and QG/QH/QC high performance economizers. Refer to economizer installation instructions.
NOTE: Differential sensor applications must use the same two sensors.
TABLE 1
| No. Of Sensors | Outdoor Air Is Enabled For Free Cooling When: |
|---|---|
| 1 | OA enthalpy, A7, is less than free cooling setpoint (single enthalpy). |
| 2 | OA enthalpy, A7, is less than RA enthalpy, A62 (differential enthalpy).* |
Install Sensors
NOTE: Install the return air sensor before installing optional power exhaust dampers and gravity exhaust dampers. If gravity exhaust, power exhaust, or hoods are already installed, remove from unit.
- Disconnect all power to unit.
- Remove unit top back panel and retain screws. If economizer is already installed, remove hood.
- Install sensors as shown in TABLE 2.
TABLE 2
| Sensors | Unit | Kit Harness Used: | Sensor Location |
|---|---|---|---|
| 1 | LG/LC/LH/LD 024-074 | P104 | FIGURE 1 |
| KG/KC/KH 024-090 | None* | ||
| 2 | LG/LC/LH/LD 024-074 | P104, P105** | FIGURE 1 |
| KG/KC/KH 024-090 | *P105, J105 | ||
| 1 | LG/LC/LH/LD 078-152 | P104 | FIGURE 2 and FIGURE 4 |
| KG/KC/KH 090-150 | None* | ||
| 2 | LG/LC/LH/LD 078-152 | P104, P105** | FIGURE 2 and FIGURE 4 |
| KG/KC/KH 090-150 | *P105, J105 | ||
| 1 | LG/LC/LH/LD 156-300 | P104 | FIGURE 3 |
| KG/KC/KH 156-300 | None** | ||
| 2 | LG/LC/LH/LD 156-300 | P104, P105* | FIGURE 3 |
| KG/KC/KH 156-300 | *P105, J105 | ||
| 1 | ZG/ZC/ZH | P104 | FIGURE 5 |
| 2 | ***ZG/ZC/ZH | NA | NA |
| 1 | QG/QC/QH | None | FIGURE 6 |
| 2 | ***QG/QC/QH | N/A | NA |
| 2 | SC/SG/SH/SD 036-060 | P104, P105 | FIGURE 10 |
| 2 | SC/SG/SH/SD 092-240 | P104, P105 | FIGURE 11 |
NOTE: *P104 not used; disconnect S175, reconnect to A7.
NOTE: **J105 provided in unit.
NOTE: ***Differential enthalpy not available with ZG/ZC/ZH/QG/QC/QH units.
Safety Warnings
WARNING
To prevent serious injury or death:
- Lock-out/tag-out before performing maintenance.
- If system power is required (e.g., smoke detector maintenance), disable power to blower, remove fan belt where applicable, and ensure all controllers and thermostats are set to the “OFF” position before performing maintenance.
- Always keep hands, hair, clothing, jewelry, tools, etc., away from moving parts.
WARNING
Improper installation, adjustment, alteration, service or maintenance can cause property damage, personal injury or loss of life. Installation and service must be performed by a qualified installer, service agency or the gas supplier.
CAUTION
As with any mechanical equipment, contact with sharp sheet metal edges can result in personal injury. Take care while handling this equipment and wear gloves and protective clothing.
Diagram Descriptions
Figure 1: Sensor Installation (LG/LC/LH/LD/KG/KC/KH 024-090 Units)
Illustrates sensor installation for LG/LC/LH/LD/KG/KC/KH 024-090 units. It shows the A7 Outdoor Air Sensor mounted at the top and the A62 Return Air Sensor mounted lower within the unit's framework. The P104 wiring harness is shown connected to the outdoor sensor, and the P105 wiring harness is shown connected to the return sensor. A note indicates the P104 harness is for LGH/LCH units only.
Figure 2: Sensor Installation (LG/LC/LH/LD/KG/KC/KH 078-152 Units)
Depicts sensor installation for LG/LC/LH/LD/KG/KC/KH 078-152 units. Similar to Figure 1, it shows the A7 Outdoor Air Sensor and A62 Return Air Sensor placement. The P104 harness connects to the outdoor sensor, and the P105 harness connects to the return sensor. The P104 harness is again noted as being for LGH/LCH units only.
Figure 3: Sensor Installation (156-300S Units)
Details sensor installation for 156-300S units. It shows the A7 Outdoor Air Sensor mounted near the top and the A62 Return Air Sensor mounted lower, both connected to a division panel. The P104 harness connects to the outdoor sensor, and the P105 harness connects to the return sensor. The A6 Enthalpy Control unit is also shown, with connections from the sensors via the harnesses. J104 and J105 jacks are indicated for harness connections.
Figure 4: Installing A62 Bracket (LG/LC/LH/LD/KG/KC/KH 078-152 Units)
Illustrates the installation of the A62 bracket for LG/LC/LH/LD/KG/KC/KH 078-152 units. It shows the A7 Outdoor Air Sensor and the A62 Return Air Enthalpy Sensor mounted, with the bracket connecting them to the division panel.
Figure 5: Sensor Installation (ZG/ZC/ZH 036-150 Units)
Depicts sensor installation for ZG/ZC/ZH 036-150 units in both downflow and horizontal configurations. It notes that the factory-installed S175 outdoor air sensible sensor and bracket should be removed. Wiring to S175 is to be disconnected and reconnected to the A7 enthalpy sensor. The A7 sensor is installed using the S175 bracket holes. Harnesses provided in the kit are not used in this application.
Figure 6: Sensor Installation (QG/QC/QH 036-150 Units)
Shows sensor installation for QG/QC/QH 036-150 units. It indicates the sensor location and controller location. The red and black wires from the controller's "SO" and "SO+" terminals are to be plugged into the sensor's + and - terminals, respectively. Unused harnesses should be discarded.
Figure 7: A6 Control Board (KG/KC/KH Units)
Displays the A6 Control board for KG/KC/KH units. It highlights terminals SR+ and SR, and indicates a resistor that needs to be removed between these terminals. The setpoint dial should be rotated clockwise to position "D" for "FREE COOL".
Figure 8: Wiring A6 Enthalpy Control (KG/KC/KH/LGX/LCX/LHX 024-090 Units)
Details wiring for the A6 Enthalpy Control on KG/KC/KH/LGX/LCX/LHX 024-090 units. It shows the A7 Outdoor Air Sensor and A62 Return Air Sensor. The S175 harness is reused. The P105 harness connects to the A62 sensor and the P105 jack. The J105 jack is also shown, connecting to the A6 Enthalpy Control.
Figure 9: Wiring A6 Enthalpy Control (KG/KC/KH 090-150 Units)
Illustrates wiring for the A6 Enthalpy Control on KG/KC/KH 090-150 units. It shows the J105 harness being routed through a grommet to the A6 Enthalpy Control unit.
Figure 10: Sensor Wiring (S*H 036-060 Units)
Shows sensor wiring for S*H 036-060 units. It indicates the A7 Outdoor Air Sensor and A62 Return Air Sensor, along with the P104 and P105 harnesses connecting to J104 and J105 respectively.
Figure 11: Sensor Wiring (S*H 092-240 Units)
Depicts sensor wiring for S*H 092-240 units. It shows the A7 Outdoor Air Sensor and A62 Return Air Sensor, with P104 and P105 harnesses connecting to J104 and J105.
Wiring Instructions
Wire A7 Sensor
NOTE: S175 is factory-installed and wired in KG/KC/KH/ZG/ZC/ZH/LGX/LCX/LHX 024-300S economizers. Kit P104 harness is not used. When replacing S175 with an A7 enthalpy sensor, wire A7 with disconnected S175 wires.
- Connect P104 harness plug to unit J104. See FIGURE 1 for 024-090 units, FIGURE 2 for 078-152 units, and FIGURE 3 for 156-300S units. On SC/SG/SH/SD see FIGURE 10 for 036-060, FIGURE 11 for 092-240.
NOTE: Wiring to sensor is shown on D or D1 economizer wiring section. D or D1 is located on the compressor access panel or packaged with economizer.
- Connect the wires on the other end of the harness to A7 terminals S and + as marked on the wires. Make sure polarity is correct.
Wire A62 Sensor - LG/LC/LH/LD/KG/KC/KH/SC/SG/SH/SD
NOTE: Discard J105 harness provided in kit when installing LG/LC/LH/LD & SC/SG/SH/SD units.
- Connect P105 harness plug to unit J105. See FIGURE 1 for 024-090 units, FIGURE 2 for 078-152 units, and FIGURE 3 for 156-300S units. On SC/SG/SH/SD see FIGURE 10 for 036-060, FIGURE 11 for 092-240.
On KG/KC/KH units refer to Wire A6 section in this instruction to install J105.
NOTE: Wiring to sensor is shown on D or D1 economizer wiring section. D or D1 is located on the compressor access panel or packaged with economizer.
- Connect the wires on the other end of the harness to A62 terminals S and + as marked on the wires. Make sure polarity is correct.
- Reinstall gravity exhaust damper, power exhaust, and outdoor air hood when applicable.
Wire A6 Control - KG/KC/KH Units Only
- Install J105 harness jack in panel as shown in FIGURE 8 for 024-090 units, FIGURE 9 for KG/KC/KH 090-150 units and FIGURE 3 for 180-300S units.
- Remove resistor between A6 enthalpy control terminals SR+ and SR. See FIGURE 7.
- Connect the two leads from the wire harness to SR+ and SR terminals on the A6 control. Note the labeling on the wires for correct wiring.
- Turn A6 control setpoint dial completely clockwise to position "D". See FIGURE 7.
Controller Configuration
Prodigy 2.0 M3 Unit Controller Configuration
Configure the Unit Controller for the enthalpy sensor using the following menu:
Go to SETUP / INSTALL and navigate through the various setup questions until Configuration ID 1 appears. Position two needs to be set to either S for economizer - single enthalpy or D for economizer - dual enthalpy.
Prodigy M4 Unit Controller Configuration
Configure the unit through the mobile app. Go to SETUP / RTU Menu > Setup Install and navigate through the various setup questions until Configuration ID 1 appears. Position two needs to be set to either S for economizer - single enthalpy or D for economizer - dual enthalpy.
NOTE: Refer to M4 Setup Guide provided with the unit for more info.
Operation
Refer to Unit Controller manual for start-up and operation.
