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16

INSTALLER’S GUIDE

Step

Checkout Procedure

Proper Response

2.

DIFFERENTIAL ENTHALPY

Execute stop one, Checkout Preparation.

Turn DCV MAX to mid position.
Place 620 ohm resistor across S

O

 and + (white sleeve 

resistor makes OA enthalpy low).

Place 1.2K ohm resistor across S

R

 and + (purple sleeve resistor 

makes RA enthalpy high).

Free cool LED turn on; motor drives to approxi-

mately 45 degrees (half) open.

Remove 620 ohm resistor from S

O

 and +.

Free cool LED turn off; motor drives closed

3.

SINGLE ENTHALPY

Execute stop one, Checkout Preparation.

Turn DCV MAX to mid position.
Set enthalpy potentiometer to A (fully CCW).

Free cool LED turns on; motor drives to approxi-

mately 45 degrees (half) open.

Set enthalpy potentiometer to D or E for W7212C (fully CW).

Free cool LED turns off; motor drives closed.

4.

DCV AND EXHAUST
Execute step one, Checkout Preparation.

LED for both DCV and Exhaust should be off.

Turn DCV MAX to mid position.

Motor drives to mid position, 45 degrees open.

Turn MIN POS fully CW.

Motor drives fully open.

Turn MIN POS and DCV MAX to fully CCW.

Motor drives closed.

Turn DCV MAX to mid position.

Connect 9V battery positive to AQ and negative to AQ1.

LED for both DCV and Exhaust turn on.

Actuator drives to 45 degrees open.

Remove jumper from N terminal (economizer goes into not oc

-

cupied mode).

Motor remains at 45 degrees open.

Adjust DCV MAX towards CW.

Motor will move to position set by DCV MAX pot.

Adjust DCV MAX to fully CCW.

Motor will drive closed.

Reconnect jumper to N terminal.

Adjust DCV MAX and MIN POS pots.

Motor will drive to the most open position of the 

pots.

Adjust DCV MAX and MIN POS pots to fully CCW.
Remove power from N terminal adjust MIN POS towards CW.

Motor should not move.

Adjust DCV MAX towards CW.

Motor will move to position set by DCV MAX pot.

5.

MINIMUM AND MAXIMUM POSITION
Execute stop one, Checkout Preparation.

Connect 9V battery positive to AQ and negative to AQ1. Adjust 

DCV MAX potentiometer to mid position.

DCV LED turns on. Actuator drives to 45 de-

grees open.

Turn DCV maximum position potentiometer to fully CCW.

Actuator drives fully closed.

Turn minimum position potentiometer to midpoint.

Actuator drives to 45 degrees open.

Turn minimum position potentiometer fully CW.

Actuator drives fully open.

Turn MIN POS to fully CCW.

Actuator drives fully closed.

W7212: Remove jumper from TR and N.

Actuator drives fully closed.

W7214: Jumper TR to O.

6.

MIXED AIR INPUT
Execute stop one, Checkout Preparation.

Turn DCV MAX to mid position; set enthalpy potentiometer to A. Free cool LED turns on.

Actuator drives to 45 degrees open.

Remove 5.6K ohm resistor (green sleeve) and place jumper from 

T and T1.

Actuator drives to 45 degrees open.

Remove jumper from T and T1 and leave open.

Actuator drives fully closed.

Table 4. Checkout for W7212, W7213, W7214 Economizer Connected to Honeywell Actuator (Cont.)

Summary of Contents for BAYRLAY006A

Page 1: ...TRIC SHOCK HAZARD Open and lock out all unit disconnects prior to ac cessory installation or unit maintenance to prevent injury or death from electrical shock or contact with moving parts SAFETY HAZARD Do not remove end covers from economizer actua tor the spring return assembly may release and cause personal injury Install Economizer Kit 1 Remove Power Disconnect and verify that power is off 2 Re...

Page 2: ... left Blower partition using two sheetmetal screws See Figure 10 page 7 The male tabs on the Yellow and Yellow Black wires will connect to the Economizer wiring harness in a later step 2 Enthalpy Sensor If used install this option at this time per instructions provided in the sensor kit 7 Route Main Wiring 1 From the Economizer assembly pass the wire harness through the coil grommet See Figure 11 ...

Page 3: ...B AC Economizer Kit Components Top Sealing Flange Horizontal Return Air Panel Down Flow Return Air Panel Coils Access Panel Blower Access Panel Control Box Access Panel Figure 3 Remove Panels Mixed Air Sensor Logic Module Economizer Assembly Return Air Damper Flange Screw and two 2 Mixed Air Sensor Sheetmetal Screws not shown Mist Eliminator Filter Rainhood Assembly Figure 2 BAYECON104AA AB AC Eco...

Page 4: ...amper Economizer 2 Insert Assembly Screw Figure 5 Swing Down and Set Economizer Return Damper Figure 4 Insert Economizer in Shipping Position Dry bulb outside air temperature sensor Economizer actuator and Logic Module Insert economizer in folded shipping position ...

Page 5: ... and hood Economizer and Return Air Damper Figure 7 Mounting Rain Hood 3 Tighten the two 2 top screws and the two 2 side screws 2 Drive six 6 self tapping screws into the keyhole openings on each side of hood 1 Loosen the two 2 screws to allow hood to slide under the unit Economizer Rain Hood Unit s top sealing slides under HVAC unit s top sealing HVAC unit s top HVAC unit Hood Detail ...

Page 6: ...and Filter Economizer Rain Hood A Mist Eliminator Relief Damper Return Duct Roofcurb order separately Outside air dampers Return air dampers Economizer Unit Application Models A BAYECON103AA AB AC 20 1 8 BAYECON104AA AB AC 24 3 8 WCZ 024 036 DCZ 024 036 YCZ 024 036 WCZ 048 060 DCZ 048 060 YCZ 048 060 ...

Page 7: ...1 From economizer assembly pass wire harness through coil Grommet See View A 2 Continue routing behind compressor compartment and into Blower Compartment Coil Grommet 3 Pull the two 2 Mixed Air Sensor wires with female quick connects from the harness and route down near the Mixed Air Sensor Connect to sensor pigtail wire leads 4 Continue Routing the Remaining Harness Through the Grommet and into t...

Page 8: ...ure 12 YCZ Economizer Connection Diagram A A A A IMPORTANT Retain this wiring diagram please return this document to service information pack upon completion of work Wiring Diagram for Economizer Using a Honeywell W7459 Logic ...

Page 9: ... A IMPORTANT Retain this wiring diagram please return this document to service information pack upon completion of work Wiring Diagram for Economizer Using a Honeywell W7459 Logic Figure 13 WCZ DCZ Economizer Connection Diagram ...

Page 10: ...A A A A ACCESSORY MODELS BAYECON103AA AB AC BAYECON104AA AB AC BAYECON203AA AB AC BAYECON204AA AB AC IMPORTANT Retain this wiring diagram please return this document to service information pack upon completion of work Wiring Diagram for Economizer Using a Honeywell W7212 Logic ...

Page 11: ...A A A ACCESSORY MODELS BAYECON103AA AB AC BAYECON104AA AB AC BAYECON203AA AB AC BAYECON204AA AB AC IMPORTANT Retain this wiring diagram please return this document to service information pack upon completion of work Wiring Diagram for Economizer Using a Honeywell W7212 Logic ...

Page 12: ...and Dual Fuel models When outdoor air conditions are suf ficient for Free Cooling and the thermostat sends a signal for 2nd stage cooling G Y1 Y2 O for Heat Pumps 1 2 1 4 1 6 1 8 2 0 2 2 2 4 2 6 2 8 3 0 3 2 3 4 3 6 3 8 4 0 4 2 4 4 4 6 9 0 1 0 0 8 0 7 0 6 0 5 0 4 0 3 0 20 10 E N T H A L P Y B T U P E R P O U N D D R Y A I R 85 29 90 32 95 35 100 38 105 41 110 43 35 2 35 2 40 4 40 4 105 41 110 43 45...

Page 13: ... Connect 1 2K ohm 4074EJM Checkout Resistor across terminals So and 2 Turn enthalpy setpoint potentiometer to A LED turns on indicating low enthalpy Motor drives toward open 3 Turn enthalpy setpoint potentiometer to D LED turns off indicating high enthalpy Motor drives toward closed 4 Disconnect the 1 2K ohm checkout resistor D 1 To verify sensor operation reconnect the lead of the outdoorenthalpy...

Page 14: ...9 6 32 2 204 2 714 91 4 33 2 111 2 676 93 2 34 2 023 2 639 95 0 35 1 938 2 600 96 8 36 1 858 2 561 98 6 37 1 781 2 526 100 4 38 1 708 2 484 Temp vs OHM for MAS Mixed Air Sensor Table 3 Temp vs OHM Values for MAS Mixed Air Sensor 1 1 2 2 M9097 ENTHALPY CHANGEOVER SETPOINT LED LIGHTS WHEN OUTDOOR AIR IS SUITABLE FOR FREE COOLING INSERT DC MILLIAMMETER BETWEEN SO AND S FOR CHECKOUT AND TROUBLESHOOTIN...

Page 15: ...e Proper Response 1 CHECKOUT PREPARATION FOR ECONOMIZING ONLY Disconnect power at TR and TR1 All LED are off Exhaust Fan contacts are open Disconnect devices at P and P1 Jumper P to P1 defaults to on board MIN POS potentiometer Place 5 6K ohm resistor across T and T1 Blue sleeve provides input to economizer that the MAT is between 50 55F Jumper TR to 1 call for cooling from the thermostat W7212 on...

Page 16: ...at 45 degrees open Adjust DCV MAX towards CW Motor will move to position set by DCV MAX pot Adjust DCV MAX to fully CCW Motor will drive closed Reconnect jumper to N terminal Adjust DCV MAX and MIN POS pots Motor will drive to the most open position of the pots Adjust DCV MAX and MIN POS pots to fully CCW Remove power from N terminal adjust MIN POS towards CW Motor should not move Adjust DCV MAX t...

Page 17: ...pplications For more information please visit www trane com or www americanstandardair com The manufacturer has a policy of continuous data improvement and it reserves the right to change design and specifications without notice We are committed to using environmentally conscious print practices 2022 18 HE85D1 1D EN 09 Sep 2022 Supersedes 18 HE85D1 1C EN May 2022 ...

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