Orion SA Controller User Manual

Factory Packaged Controls

SA Controller

Technical Guide

SA Controller Code: Y200921

Requires System Manager Code: Y200921SM Version 1.0 and up

Requires Service Tool Code: Y200921HH Version 1.0 and up

Table of Contents

OVERVIEW ....................................................................................................................................... 4

Part Number Cross Reference ..................................................................................................................................................4

Features and Applications ........................................................................................................................................................5

SA Controller Dimensions ........................................................................................................................................................6

SA Expansion Module Dimensions ..........................................................................................................................................7

12-Relay Expansion Module Dimensions ................................................................................................................................8

SA Controller Component Locations .......................................................................................................................................9

INSTALLATION AND WIRING ........................................................................................................10

Important Wiring Considerations ...........................................................................................................................................10

SA Controller Wiring ...............................................................................................................................................................11

Digital Room Sensor ..........................................................................................................................................................12

Space Temperature Sensor ...............................................................................................................................................13

Remote SAT Reset Signal .................................................................................................................................................13

Supply Air Temperature Sensor ................................................................................................. ........................................14

Entering Water Temperature Sensor .................................................................................................................................15

Entering Air Temperature Sensor .......................................................................................................................................16

Water Side Economizer Valve ...........................................................................................................................................17

Water Side Economizer Bypass Valve ..............................................................................................................................17

Supply Fan VFD Signal or Zoning Bypass Damper Actuator Signal .................................................................................18

SA Expansion Module Input Wiring ........................................................................................................................................20

SA Expansion Module Output Wiring .....................................................................................................................................21

Suction Pressure Transducer ............................................................................................................................................22

SA Expansion Module Binary Inputs ................................................................................................................................23

Entering Air Humidity Sensor .............................................................................................................................................24

Indoor Wall-Mounted Humidity Sensor ..............................................................................................................................25

Modulating Heating Device ................................................................................................................................................26

Modulating Cooling Signal(s) .............................................................................................................................................27

12-Relay Expansion Module .............................................................................................................................................30

Two Condenser Head Pressure Module ............................................................................................................................32

Water Source Heat Pump Protection Module ....................................................................................................................33

START-UP AND COMMISSIONING

Addressing & Powering Up .....................................................................................................................................................34

Before Applying Power ......................................................................................................................................................34

Controller Addressing ........................................................................................................................................................34

Power Wiring ....................................................................................................................................................................34

Initialization ........................................................................................................................................................................35

Operating Summary ..........................................................................................................................................................35

Programming the Controller ...................................................................................................................................................35

www.aaon.com

WattMaster Controls Inc. 8500 NW River Park Drive · Parkville , MO 64152 Toll Free Phone: 866-918-1100 PH: (816) 505-1100 · FAX: (816) 505-1101 · E-mail: mail@wattmaster.com Visit our web site at www.orioncontrols.com WattMaster Form : AA-SA-TGD-01C Copyright August 2012 WattMaster Controls, Inc.

AAON Part Number: R97490

AAON

is a registered trademark of AAON, Inc., Tulsa, OK. Copeland Digital Scroll™ is a registered trademark of Copeland Corporation, Sidney, OH EBTRON® is a registered trademark of Ebtron, Inc., Loris, SC.

Neither WattMaster Controls, Inc. nor AAON assumes any responsibility for errors or omissions in this document. This document is subject to change without notice.

Table of Contents

INPUTS AND OUTPUTS

SA Controller Inputs and Outputs ..........................................................................................................................................36

SA Expansion Module Inputs and Outputs ............................................................................................................................37

SEQUENCE OF OPERATION ..........................................................................................................38

Operation Modes ......................................................................................................................................................................38

Occupied/Unoccupied Mode of Operation .........................................................................................................................38

HVAC Modes of Operation ................................................................................................................................................38

Vent Mode Operation .........................................................................................................................................................38

Cooling Mode Operation ....................................................................................................................................................38

Stage Control Window .......................................................................................................................................................40

Modulating Cooling ............................................................................................................................................................40

DX Cooling .......................................................................................................................................................................40

Air Cooled Condenser Fan Operation ...............................................................................................................................41

Water Side Economizer Operation (Valves 1 & 2) .............................................................................................................41

Water Cooled Condenser (Valve 3) ...................................................................................................................................41

Chilled Water Cooling ........................................................................................................................................................41

External Cooling ................................................................................................................................................................41

Dehumidiﬁ cation Mode ......................................................................................................................................................42

Coil Temperature Reset .....................................................................................................................................................42

Reheat Control ..................................................................................................................................................................43

Coil Temperature Offset .....................................................................................................................................................43

Heating Mode ...................................................................................................................................................................43

Stage Control Window .......................................................................................................................................................43

Hot Water or Modulating Steam Heating ...........................................................................................................................44

External Heat .....................................................................................................................................................................44

Air to Air Heat Pump Operation .........................................................................................................................................44

Water Source Heat Pump Operation .................................................................................................................................44

Morning Warm-Up Mode ...................................................................................................................................................44

Off Mode ............................................................................................................................................................................45

Supply Air Temperature Setpoint Reset .............................................................................................................................45

Supply Fan Control ............................................................................................................................................................45

Duct Static Pressure Control .............................................................................................................................................45

Pre-Heater Operation ........................................................................................................................................................46

Entering Air Lockouts ......................................................................................................... ................................................46

Supply Air Cutoffs ..............................................................................................................................................................47

SA Controller Alarms .........................................................................................................................................................48

VAV/Zone Controller Alarms ..............................................................................................................................................49

Scheduling .........................................................................................................................................................................50

Internal Trend Logging .......................................................................................................................................................50

Force Modes or Overrides .................................................................................................................................................51

VAV Terminal Unit Controller Compatibility ........................................................................................................................51

VAV/Zone System ..............................................................................................................................................................51

TROUBLESHOOTING ..................................................................................................................... 52

LED Diagnostics .......................................................................................................................................................................52

Diagnostic LED Operation .......................................................................................................................................................53

APPENDIX

System Conﬁ gurations ............................................................................................................................................................54

Stand-Alone System Layout ..............................................................................................................................................55

Interconnected System Layout ..........................................................................................................................................56

Networked System Layout .................................................................................................................................................57

Temperature Sensor Testing ...................................................................................................................................................58

OE265 Series RH Sensor Testing .....................................................................................................................................59

OE271 Pressure Sensor Testing .......................................................................................................................................60

OE275-01 Suction Pressure Transducer Testing for R410A Refrigerant ...........................................................................61

INDEX ............................................................................................................................................ 62

SA Controller Technical Guide 3

Overview

Part Number Cross Reference

PART DESCRIPTION

SA Controller OE332-23-SA-A R96070 SA Expansion Module OE333-23-SA-A R96180 12-Relay Expansion Module OE358-23-12R R69180 E-BUS Distribution Module OE365-23-EBD-A R82930 Two Condenser Head Pressure Module OE370-23-HP2C R90230 Water Source Heat Pump Protection Module - 410A OE334-23-WPM-A R88350 Water Source Heat Pump Protection Module - 410A - 20% Glycol OE334-23-WPM-A20 R99750 Water Source Heat Pump Protection Module - 410A - 40% Glycol OE334-23-WPM-A40 R99760 Bypass & Slave Interface Card PL101824 N/A Bypass Damper Actuator OE281-04 N/A CommLink IV Communications Interface OE361-12 R66760 Digital Room Sensor - Temp & Humidity OE217-01 R83870 Digital Room Sensor - Temp. Only OE217-00 R83860 Duct Static Pressure Sensor OE271 P87100 Duct Temperature Sensor - 12" Probe OE231 R44940 / P87140 Duct Temperature Sensor - 6" Probe OE230 R36340 IP Module Kit OE415-02 R66770 MiniLink Polling Device OE364-22 N/A Modular Service Tool - Operator Interface OE391-08 V09280 Modular System Manager - Operator Interface OE392-08 V09270 Entering Air RH Sensor - 3% - 0-5 VDC Output OE265-14 R34700 Entering Air Temperature Sensor OE250 R34650 Remote Link II Modem Kit OE419-06 R69760 Room Mounted RH Sensor - 3% - 0-5 VDC Output OE265-11 R34690 Standard Room Sensor - Plain OE210 R31480 Standard Room Sensor - w/ Override OE211 P87040 Standard Room Sensor - w/ Override & Slide Adjust OE213 P94320 Standard Room Sensor - w/ Slide Adjust OE212 P94100 Static Pressure Pickup Tube OE290 S18780 Suction Pressure Transducer OE275-01 R28390 USB-Link Kit OE366 R71870

ORION

PART NO:

AAON TULSA

PART NO:

Revised 10/18/10

SA Controller Technical Guide

Overview

Features and Applications

Features

The Series A Controller (OE332-23-SA)—SA Controller—is designed with 6 analog inputs, 2 analog outputs, and 5 relay outputs. Most common HVAC unit control applications can be conﬁ gured using only the SA Controller; however , if needed, the SA Controller’s input and output capabilities can be expanded with the SA Expansion Module ( OE33323-SA) or 12-Relay Expansion Module (OE358-23-12R) by means of a modular cable. The SA Expansion Module provides an additional 4 analog inputs, 5 analog outputs, 8 binary inputs, and 4 conﬁ gurable relays. The 12-Relay Expansion Module provides an additional 12 conﬁ gurable relays.

The SA Controller can also use the Two Condenser Head Pressure Module ( OE370-23-HP2C) connected to the E-BUS Distribution Module ( OE365-23-EBD-A) for those applications requiring Head Pressure Control. The SA Controller can also use the WSHP Protection Module (OE334-23-WPM-A) connected to the E-BUS Distribution Module for Water Source Heat Pump applications.

Each SA Controller can be conﬁ gured for control of VAV Units (with or without VAV/Zone Controllers), Constant Volume Units, and Make-Up Air Units. Features include the following:

• Modulating Cooling Output ( Copeland Digital

Scroll™ Compressor or Chilled Water Valve Control)

• Modulating Heating Output ( Hot Water Valve,

Steam Valve, SCR Electric Heat Control)

• Full Integration with the AAON

Hot Gas Reheat Valve Controller

MHGRV Modulating

• Conﬁ gurable for Air to Air and Water Source Heat Pump

Applications

• Advanced Dehumidiﬁ cation Capabilities

• Adaptive Supply Air Reset

• Selectable Control Sensor

• Fan Proving Interlock

• Dirty Filter Alarm

• Emergency Shutdown Input (Smoke Detector/Firestat or

other Shutdown Conditions)

• Water Side Economizer Option

• Remote Occupied Capabilities

• 7-Day, 2-Event-per-Day Scheduling

• 14 Holiday Event Scheduling

• Optimal Start Scheduling

• Trend Logging Capability

• Static Pressure Control for Filter Loading Applications

• Head Pressure Control (with optional Two Condenser Head

Pressure Module)

• Additional Water Safeties (with optional Water

Source Heat Pump Protection Module)

Applications

Variable Air Volume Unit

The SA Controller can be conﬁ gured to control a VFD Supply Fan for Duct Static Pressure control. If the unit is not equipped with a VFD, but Duct Static Pressure control is needed, a modulating Zoning Bypass Damper can be controlled by the SA Controller.

VAV units are typically designed for occupied Cooling with Morning W arm-up Heating. This option is available with the SA Controller. The SA Controller can also be used for a Zoning System that needs Duct Static Pressure control and Occupied Cooling and Heating. The SA Controller also has the ability to be conﬁ gured for Duct Static Pressure Control by controlling the Supply Fan VFD for the purpose of maintaining proper Duct Static Pressure in response to varying ﬁ lter loading conditions.

The SA Controller allows Dehumidiﬁ cation Priority on a VAV unit. This could be useful on a building with a very low internal sensible load, but which has a high internal and/or external latent load. During VAV Dehumidiﬁ cation, the SA Controller activates Cooling based on the Evaporator Coil Temperature and activates Gas Reheat to warm the Supply Air Temperature to the Active Supply Air Temperature Setpoint.

Constant Air Volume Unit

The SA Controller can be conﬁ gured to activate a Constant Volume Supply Fan. In most cases, this is a very basic unit with Space Temperature control.

Make-Up Air Unit

The SA Controller can be conﬁ gured for 100% Outdoor Air control for Make-Up Air. All HVAC Modes are determined from the Outdoor Air Sensors. The Outdoor Air Volume must always be at least 50% or higher to be conﬁ gured for Outdoor Air control.

Single or Dual Cabinet Unit

The SA Controller can control an SA Series Single Cabinet Unit or an SA Series Dual Cabinet Unit. Wiring for Dual Cabinet Units is shown and noted on applicable Single Cabinet Unit diagrams.

AAON® Modulating Hot

SA Controller Technical Guide

Overview

SA Controller Dimensions

Figure 1: OE332-23-SA Controller – SA Controller Dimensions

SA Controller Technical Guide

Overview

SA Expansion Module Dimensions

Figure 2: OE333-23-SA – SA Expansion Module Dimensions

SA Controller Technical Guide

Overview

12-Relay Expansion Module Dimensions

Figure 3: OE358-23-12R – 12-Relay Expansion Module Dimensions

SA Controller Technical Guide

Overview

SA Controller Component Locations

Figure 4: OE332-23-SA – SA Controller Component Locations

SA Controller Technical Guide

Installation & Wiring

Important Wiring Considerations

Zone

General

Correct wiring of the SA Controller is the most important factor in the overall success of the controller installation process. In general, most SA Controllers are factory installed and wired at the AAON

factory.

Controller Mounting

When the controller is to be ﬁ eld mounted, it is important to mount the controller in a location that is free from extreme high or low temperatures, moisture, dust, and dirt. See Table 1 for a list of the required operating conditions for the SA Controller and associated modules.

The SA Controller is housed in a plastic enclosure. It is designed to be mounted by using the 3 mounting holes in the enclosure base. The SA Controller needs to be installed in an environment which can maintain a temperature range between -30°F and 150°F not to exceed 90% RH levels (non-condensing). It is important to mount the controller in a location that is free from extreme high or low temperatures, moisture, dust, and dirt. Be careful not to damage the electronic components when mounting the controller.

Considerations

The SA Controller and associated modules must be connected to a 24 VAC power source of the proper size for the calculated VA load requirements. All transformer sizing should be based on the VA rating listed in Table 1.

Device

Control

OE332-23-SA Controller

SA Controller

OE333-23-SA

SA Expansion Module

OE358-23-12R

12-Relay Expansion

Module

OE370-23-HP2C

Two Condenser Head

Pressure Module

OE334-23-WPM-A

Water Source Heat Pump

Protection Module

OE365-23-EBD

E-BUS Distribution

Module

Voltage

24VAC 8

24VAC 10

24VAC 15

24VAC 5

24VAC 8

24VAC 50

VA Load

Temperature

-30°F to 150°F

(Non-

Humidity

Condensing)

90% RH

Warning: When using a single transformer to power more than one controller or expansion module, the correct polarity must always be maintained between the boards. Failure to observe correct polarity will result in damage to the SA Controller and associated modules.

Please carefully read and apply the following information when wiring the SA Controller or its associated modules. See Figure 5 on page 12 for the SA Controller wiring diagram. See Figur es 16 and 17 on pages 20 and 21 for SA Expansion Module wiring. And see Figure 24 on page 28 for 12-Relay Expansion Module wiring.

1. All wiring is to be in accordance with local and national electrical codes and speciﬁ cations.

2. Minimum wire size for 24 VAC wiring should be 18-gauge.

3. Minimum wire size for all sensors should be 24-gauge. Some sensors require 2-conductor wire and some require 3-or 4-conductor wire.

4. Be sure that all wiring connections are properly inserted and tightened into the terminal blocks. Do not allow wire strands to stick out and touch adjoining terminals which could potentially cause a short circuit.

5. When communication wiring is to be used to interconnect SA Controllers together or to connect to other communication devices, all wiring must be plenum-rated, minimum 18-gauge, 2-conductor, twisted pair with shield. WattMaster can supply communication wire that meets this speciﬁ cation and is color coded for the network or local loop. Please consult your WattMaster distributor for information. If desired, Belden #82760 or equivalent wire may also be used.

6. Before applying power to the SA Controller, be sure to recheck all wiring connections and terminations thoroughly.

Table 1: Voltage and Environment Requirements

SA Controller Technical Guide

Installation & Wiring

SA Controller Wiring

SA Controller

NOTE: Only one SA Controller is required whether the SA Unit is a Single Cabinet or Dual Cabinet Unit. Additional wiring for Dual Cabinet Units is shown and noted as such on the applicable Single Cabinet Unit Diagrams.

Figure 5: OE332-23-SA Controller – SA Controller Wiring

SA Controller Technical Guide

Installation & Wiring

Digital Room Sensor Wiring

Digital Room Sensor

The OE217-00 Digital Room Sensor is used to sense Space Temperature and the OE217-01 Digital Room Sensor is used to sense Space Temperature and Space Humidity. The Sensor connects to the SA Controller with the TSDRSC modular cable. It should be mounted at approximately 5 ft. above the ﬂ oor on the wall in an area that does not have drafts or is exposed to direct sunlight. See Figure 6 for wiring details.

Zone

Figure 6: OE217-00 & OE217-01 – Digital Room Sensor Wiring

SA Controller Technical Guide

Installation & Wiring

SAT & Remote SAT Reset Signal Wiring

Space Temperature Sensor

The OE210, OE211, OE212, OE213 Space Temperature Sensor is typically used for constant volume HVAC unit applications controlling one zone. The Space T emperature Sensor is a 10K T ype III thermistor sensor and should be mounted approximately 5 feet above the ﬂ oor in the space that is to be controlled. The Space Temperature Sensor is available as a sensor only, sensor with override button, sensor with slide adjust, and sensor with slide adjust and override conﬁ gurations.

When the Remote Supply Air T emperature Reset Signal option is needed, the Slide Offset option on the Room Sensor cannot be used. Only one of these options may be used on the SA Controller.

See Figure 7 below for complete Space Temperature Sensor wiring details.

Remote SAT Reset Signal

A Remote Supply Air T emperature Reset Signal can be connected to AI7 for applications requiring remote reset of the Supply Air Temperature Setpoint.

When the Slide Offset option on the Room Sensor is used, the Remote Supply Air Temperature Reset Signal cannot be used. Only one of these options may be used on the SA Controller.

The SA Controller can accept either a 0-5 VDC signal or a 0-10 VDC signal on this input.

See Figure 8 below for complete Remote SAT Reset Signal wiring details.

Figure 7: OE210, OE211, OE212, OE213 – Space Temperature Sensor Wiring

Figure 8: Remote Supply Air Temperature Reset Signal Wiring

SA Controller Technical Guide

Installation & Wiring

SAT Sensor Wiring

Zone

Supply Air Temperature Sensor

The OE231 Supply Air Temperature Sensor must be wired as shown in Figure 9 below for proper operation. The Supply Air Temperature Sensor is a 10K Type III thermistor sensor. The Supply Air Temperature Sensor should be mounted in the unit discharge plenum or in the supply air duct.

NOTE: For Dual Cabinet Units, mount the Supply Air Temperature Sensor in a Supply Air Ducting area that is common to both SA Units.

Figure 9: OE231 – Supply Air Temperature Sensor Wiring

SA Controller Technical Guide

Installation & Wiring

Entering Water Temperature Sensor Wiring

Entering Water Temperature Sensor

The OE233 Entering W ater T emperature Sensor must be wired as shown in Figure 10 below for proper operation. The Entering Water Tempera- ture Sensor is a 10K Type III thermistor sensor. The Entering Water Temperature Sensor should be mounted in the entering water piping.

NOTE: For Dual Cabinet Units, mount the Entering Water Temperature Sensor in an Entering Water Piping area that is common to both SA Units.

Figure 10: OE233 – Entering Water Temperature Sensor Installation & Wiring

SA Controller Technical Guide

Zone

Installation & Wiring

Entering Air Temperature Sensor Wiring

Zone

Entering Air Temperature Sensor

The OE231 Entering Air Temperature Sensor must be wired as shown in Figure 11 below for proper operation of the SA Controller. The Entering Air Temperature Sensor is a 10K Type III thermistor sensor. The sensor should be mounted as shown in an area that is protected from the elements and direct sunlight.

NOTE: For Dual Cabinet Units, mount the Entering Air Temperature Sensor in an Entering Air Duct area that is common to both SA Units.

Figure 11: OE231 – Entering Air Temperature Sensor Wiring

SA Controller Technical Guide

Installation & Wiring

Water Side Economizer Wiring

Water Side Economizer (WSE) Valve(s)

The Water Side Economizer Valve(s) must be wired as shown in Figure 12 below for proper operation of the SA Controller. The Water Side

Economizer Valve(s) connects to AO1 on the SA Controller.

NOTE: For Dual Cabinet Units, wire the Second Cabinet’s WSE Valve Actuator in parallel with the First Cabinet’s WSE Valve Actuator.

Water Side Economizer (WSE) Bypass Valve

The W ater Side Economizer Bypass Valve(s) must be wired as shown in Figure 13 below for proper operation of the SA Controller. The Water Side Economizer Bypass Valve(s) are wired to AO4 and AO5 on the SA Expansion Module.

NOTE: For Dual Cabinet Units, wire the Second Cabinet’s WSE Bypass Valve Actuator to AO5 on the SA Expansion Module.

Figure 12: Water Side Economizer Valve Wiring

Figure 13: Water Side Economizer Bypass Valve Wiring

SA Controller Technical Guide

Installation & Wiring

Supply Fan VFD Signal

Supply Fan VFD Signal or Zoning Bypass Damper Actuator Signal

The Supply Fan VFD or Zoning Bypass Damper Actuator Signal is a 0-10 VDC output from AO2 on the SA Controller . This signal output can be connected to the Supply Fan Variable Frequency Drive to modulate the Supply Fan speed and control Duct Static Pressure utilizing the Duct Static Pressure Sensor connected to the SA Controller. Alternatively, it can be connected to a Zoning Bypass Damper Actuator that will modulate the Zoning Bypass Damper Actuator to control Duct Static Pressure utilizing the Duct Static Pressure Sensor connected to the SA Controller. A Duct Static Pressure Sensor must be connected in order for the VFD or Zoning Bypass Damper Actuator to operate. See Figures 14 and 15 for detailed wiring.

Zone

Caution: Variable Frequency Drive units can cause large transient noise spikes which can cause interference to be propagated on other electronic equipment. Use shielded wire wherever possible and route all sensor and controller wiring away from the Variable Frequency Drive and the HVAC Unit electrical wiring.

NOTE: For Dual Cabinet Units, VFD #2 must be wired in parallel to VFD #1 as shown in Figure 14 below.

Figure 14: Supply Fan VFD Wiring

SA Controller Technical Guide

Supply Fan VFD Signal or Zoning Bypass Damper Actuator Signal

When the Bypass Damper is used (Zoning applications), be sure the Bypass Duct and Damper are designed so that Supply Air will bypass to the Entering Air Duct, ensuring equal airﬂ ow to both cabinets.

Installation & Wiring

Zoning Bypass Damper Actuator

Figure 15: Zoning Bypass Damper Actuator Wiring

SA Controller Technical Guide

Installation & Wiring

SA Expansion Module Input Wiring

Zone

SA Expansion Module

Two different Expansion Modules are available for use with the SA

The 12-Relay Expansion Module ( OE358-23-12R) provides for 12 Dry Contact Conﬁ gurable Relay Outputs. See Figure 25 for complete

wiring details. Controller to provide additional inputs and outputs beyond those found on the SA Controller.

The expansion modules can be used individually or together to provide

the required inputs and outputs for your speciﬁ c applications. The SA Expansion Module ( OE333-23-SA Controller) provides 8 Binary Inputs, 4 Analog Inputs, 5 Analog Outputs, and 4 Conﬁ gurable Relay Outputs. See Figures 16 and 17 for complete wiring details.

WARNING!!

Observe Polarity! All boards must be wired with GND-to-GND and 24VAC-to-24VAC. Failure to observe polarity will result in damage to one or more of the boards. Expansion Module must be wired in such a way that the expansion module and the controller are always powered together. Loss of power to the expansion module will cause the controller to become inoperative until power is restored to the expansion module.

10 VA Minimum Power Required

For SA Expansion Module

24 VAC

GND

Additional Suction Pressure Sensor Required On Dual Units Only.

Modular Cable

Connect To SA Controller

Modular Cable

Connect To E-BUS Distribution

Module (When Used)

See Suction Pressure Transducer Wiring Details For Complete Wiring Information.

See Humidity Sensor Wiring Details For Complete Wiring Information.

Entering Air

Humidity Sensor

VAC OR DC

GND

0-5V

Indoor Air

Humidity Sensor

VIN

GND

VOUT (0-5V)

Suction Pressure

Transducer #2

Suction Pressure

Transducer #1

Splice Wire As Required To Reach From Transducer Location To Expansion Module Location

Water Proof of Flow A- N.O. Input

Water Proof of Flow B - N.O. Input

Air Proof Of Flow - N.O. Input

Remote Forced Occupied - N.O. Input

Emergency Shutdown - N.C. Input

Drain Pan Overflow A - N.O. Input

Drain Pan Overflow B - N.O. Input

Dirty Filter - N.O. Input

RD WH

GND

B 1I

B 2I

B 3I

B 4I

B 5I

B 6I

B 7I

BI8

AI1

AI2

AI3

AI4

SA Expansion Module

Figure 16: OE333-23-SA – SA Expansion Module Input Wiring

Revised 6/21/11

SA Controller Technical Guide

Installation & Wiring

SA Expansion Module Output Wiring

The SA Expansion Module must be connected to 24 VAC as shown in the wiring diagram below. Please see Table 1 on page 10 for correct VA requirements to use when sizing the transformer(s) used for powering the expansion module.

Also please note that when wiring the SA Expansion Module, its contacts must be wired as wet contacts (connected to 24 VAC).

Figure 17: OE333-23-SA – SA Expansion Module Output Wiring

SA Controller Technical Guide

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