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ACCESSORY INSTALLATION

Accessory Hinged Panels —

The following parts are

needed to field install an EconoMi$er on a unit with hinged ac-
cess panels:

3-6 Ton Unit Chassis

7-10 Ton Unit Chassis

Ton Unit Chassis

The hinged access panel parts should be installed in place of

corresponding existing parts only on units equipped with
hinged access panels.

Standard Hood —

To assemble the standard hood assem-

bly to either the vertical or horizontal EconoMi$er:

1. Remove the EconoMi$er hood from its packaging, and

locate the outdoor air (OA) panel. See Fig. 16.

2. Install the

in. (horizontal) or

in. (verti-

cal) seal strip on the Exhaust Air (EA) hood top panel.
Install the

in. (horizontal) or

in. (verti-

cal) seal strip on the EA hood side panels and bottom
brackets. Assemble the EA hood to the OA panel as
shown in Fig. 20, using the screws provided. Do not
attach hood assembly to unit at this time.

3. Install the

in. (horizontal) or

in. (verti-

cal) seal strip on the OA hood top and side panels.
Assemble the OA hood to the OA panel as shown in
Fig. 21, using the screws provided. Do not attach hood
assembly to the unit at this time.

4. Slide the OA inlet screens into the screen track on the

hood side panels. While holding the screens in place,
fasten the screen retainer to the hood using the screws
provided. Repeat the process for the EA screen.

5. Install the complete hood assembly on the unit, and

secure using the screws provided. See Fig. 22.

ITEM

QUANTITY

PART NO.

DESCRIPTION

50DK508295

Label, JCI Economizer

AL48AM217

Screw

50CK504722

Label

HY76TB035

Wire Tie

AL56AU126

Screw

50HJ402257

Upper Filter Panel Assembly
(or reuse existing panel)

50HJ440057

Lower Filter Panel Assembly

ITEM

QUANTITY

PART NO.

DESCRIPTION

50DK508295

Label, JCI Economizer

AL48AM217

Screw

50CK504722

Label

HY76TB035

Wire Tie

AL56AU126

Screw

50HJ402260

Upper Filter Panel Assembly
(or reuse existing panel)

50HJ440056

Lower Filter Panel Assembly

ITEM

QUANTITY

PART NO.

DESCRIPTION

50DK508295

Label, JCI Economizer

AL48AM217

Screw

50CK504722

Label

HY76TB035

Wire Tie

AL56AU126

Screw

50HJ402261

Upper Filter Panel Assembly
(or reuse existing panel)

50HJ440056

Lower Filter Panel Assembly

LOWER
EXHAUST HOOD

Fig. 22 — Completed Hood Assembly

EXHAUST AIR
HOOD TOP

SCREEN
RETAINER

AIR EXHAUST
HOOD SIDES

EXHAUST
AIR SCREEN

3/4 x 3/4 IN.
SEAL STRIP

1/8 x 7/8 IN.
SEAL STRIP

OUTDOOR
AIR
PANEL

EXHAUST AIR
BOTTOM BRACKET

Fig. 20 — Exhaust Air Hood Assembly

(Horizontal EconoMi$er)

OUTDOOR AIR
HOOD TOP

SCREEN
RETAINER

OUTDOOR AIR
INLET SCREENS

1/8 x 7/8 IN.
SEAL STRIP

OUTDOOR AIR
HOOD SIDES

1/8 x 7/8 IN.
SEAL STRIP

OUTDOOR
AIR PANEL

ASSEMBLED
LOWER
EXHAUST HOOD

Fig. 21 — Outdoor Air Hood Assembly

(Horizontal EconoMi$er)

Содержание CRECOMZR 004A01 Series

Страница 1: ...wo functions for the EconoMi er controller it determines the availability of free cooling EconoMi er changeover and it disables compressors at low ambient temperatures mechanical cooling lockout When free cooling is available the EconoMi er sequences free cooling with up to two stages of mechanical cooling to maintain comfort in the space When free cooling is not avail able the EconoMi er modulate...

Страница 2: ...ainer to the hood using the screws provided Repeat the process for the barometric exhaust air screen Do not attach completed Fig 6 hood assembly to unit at this time UNIT PACKAGE NO QTY CONTENTS 3 to 6 Ton Vertical CRECOMZR 004A01 1 Outdoor Air Opening Panel 1 Outdoor Air Hood Top 2 Outdoor Air Hood Sides 1 Exhaust Air Hood Top 2 Exhaust Air Hood Sides 1 Exhaust Air Bottom Bracket 2 Screen Retaine...

Страница 3: ...4 12 Mount the supply air temperature sensor to the lower left portion of the indoor blower housing with the two 2 screws provided see Fig 15 Connect the violet and pink wires to the corresponding connections on the supply air temperature sensor Replace the indoor fan motor access panel SEAL STRIP SEAL STRIP OUTDOOR AIR HOOD TOP SCREEN RETAINER OUTDOOR AIR INLET SCREENS OUTDOOR AIR HOOD SIDES ASSE...

Страница 4: ...ETURN AIR SENSOR VIOLET WHITE RED OAT COM OAH 15 V RAT COM RAH 15 V ECONOMI ER CONTROLLER PINK TEMP TEMP VIOLET SUPPLY AIR TEMPERATURE SENSOR V 24 COM VAC SENSOR CO2 COM DAT COM REM POT COM LED COM CO2 CO2 LEGEND Fig 11 EconoMi er Wiring OAT Outdoor Air Thermostat Fig 12 EconoMi er Sensor Wiring ...

Страница 5: ...1 BLU GRAY H4 SECONDARY 230VAC X4 X1 HT01AH850 460 VAC RED H1 GRAY H2 SECONDARY 230VAC X4 X1 HT01AH859 575 VAC 23 13 11 21 230VAC OR BLACK L1 BLUE L2 COMPRESSOR 1 CONTACTOR FIELD SUPPLIED WIRING GREEN GND 2 x 4 IN HANDY BOX X3 X2 H2 H3 X2 X3 TO FUSED DISCONNECT Fig 13 Wiring Diagram for Power Exhaust System Fig 14 Indoor Fan Motor Access Panel Location FAN 1 FAN 2 CAPACITOR 2 CAPACITOR 1 RELAY 2 R...

Страница 6: ... EconoMi er plug into the unit wiring harness 9 Remove the shipping tape from the barometric relief dampers and ensure the dampers move freely See Fig 18 10 Remove the indoor fan motor access panel see Fig 14 11 Mount the Supply Air SA temperature sensor to the lower left portion of the indoor blower housing with the screws provided See Fig 15 12 Connect the violet and pink wires to the correspond...

Страница 7: ...n retainer to the hood using the screws provided Repeat the process for the EA screen 5 Install the complete hood assembly on the unit and secure using the screws provided See Fig 22 ITEM QUANTITY PART NO DESCRIPTION 1 1 50DK508295 Label JCI Economizer 2 5 AL48AM217 Screw 3 1 50CK504722 Label 4 1 HY76TB035 Wire Tie 5 1 AL56AU126 Screw 6 1 50HJ402257 Upper Filter Panel Assembly or reuse existing pa...

Страница 8: ...aust hood 1 Install the 3 4 x 3 4 in seal strip on the top panel of the power exhaust hood Install the 1 8 x 7 8 in seal strip on the power exhaust hood side panels and bottom panel Assemble the power exhaust side panels then bottom panel as shown in Fig 23 2 Attach the hood top panel to the side panels 3 Skip Step 4 if this is a retrofit installation 4 Assemble the OA side panels then top panel t...

Страница 9: ...ure the complete hood assembly to the rooftop using the screws provided POWER EXHAUST HOOD SIDE BRACE POWER EXHAUST HOOD TOP PANEL U CLIPS 4 FAN ASSEMBLY POWER EXHAUST HOOD SCREEN POWER EXHAUST HOOD BOTTOM PANEL EXHAUST FAN DIVIDER PLATE U CLIP 4 POWER EXHAUST HOOD SIDE NO 10 SHEET METAL SCREW 4 POWER EXHAUST HOOD SCREEN Fig 26 Power Exhaust Hood Cross Section Fig 27 U Clip Installation 1 2 3 1 2 ...

Страница 10: ... orientation for a vertical EconoMi er and Fig 36 for a horizontal EconoMi er 2 Open the barometric relief dampers 3 Mount the bracket to the inside of the EconoMi er using a 5 16 in nut driver and the two No 10 self drilling screws provided TO WIRE THE RETURN AIR TEMPERATURE SENSOR OR THE RETURN AIR ENTHALPY SENSOR 1 Remove the knockout plug See Fig 36 or 37 2 Feed the wires through the knockout ...

Страница 11: ...o rotate SW no 1 adjuster downward toward zero until resistance is encountered Turn the adjuster in the opposite direc tion until the first stage is energized See Fig 38 or 39 Adjusting Switch 2 SW no 2 has an adjustable trip point from 20 to 90 degrees The adjuster for SW no 2 is factory set at 63 degrees To change the factory setting 1 Reset the Minimum Position Set Point located on the controll...

Страница 12: ...entilation Air Minimum Position Set Up If ven tilation air is not required proceed to Step 5 If ventilation air is required perform the following 1 The indoor fan must be on to set the ventilation air Either put the thermostat in the continuous fan mode or jumper the R and G terminals at the rooftop unit con nection board 2 Locate the minimum position MIN POS potentiome ter Turn the potentiometer ...

Страница 13: ...er amount of outdoor air to enter the unit If the SAT drops below 53 F the outdoor air damper modulates closed to reduce the amount of outdoor air When the SAT is between 53 and 57 F the EconoMi er maintains its position If outdoor air alone cannot satisfy the cooling requirements of the conditioned space and the OAT is above the MECH CLG LOCKOUT set point the EconoMi er integrates free cooling wi...

Страница 14: ... if desired The flash code priorities are as follows 1 On Off or continuous flash 2 Critical fault 3 Non critical fault If any sensors are opened shorted or removed the EconoMi er determines whether the failure is critical or non critical and flashes the appropriate code See Table 7 for proce dures If a non critical sensor fault occurs i e outdoor air humidity the EconoMi er automatically reconfig...

Страница 15: ...he Indoor Evaporator Fan Contactor IFC or that 24 VAC is present at the Indoor Evaporator Fan On IFO terminal Check whether 24 VAC is present at Plug PL6 1 red wire and or PL6 3 black wire If 24 VAC is not present check wiring See unit label diagram Check proper thermostat connection to G on the connection board No Power to EconoMi er Controller Check to ensure that 24 VAC is present across Termin...

Страница 16: ...e between the wires The values should be the same as the original test If the temperature versus resistance does not coincide with the appropriate value replace the sensor Make sure the tan and violet wires are connected on both ends at the sensor and the controller Damper Position Less than Minimum Position Set Point Supply Air Low Limit Strategy Controlling The supply air temperature is less tha...

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