**Akcel System Inc.**

**Building Automation System Field Reference**

**Version:** 1.1 | **Date:** December 2025

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This library contains Quick Reference Standard Sequence of Operations (SSO) documents for common Building Automation System devices. Each SSO is designed for **field use by technicians** and includes:

- Device overview and specifications

- Safety requirements and PPE

- Installation checklist with step-by-step instructions

- Expected readings and proof-out tests

- Troubleshooting guide with common issues

- Escalation checklist and contacts

- Calibration procedures (where applicable)

- Tips and common issues

**Format:** Concise, checklist-driven, field-ready

**Target Users:** Installers, Field Specialists, Network Specialists, Programmers

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- Thermistor (10K Type II/III) and transmitter types

- Signal: Resistance / 0-10VDC / 4-20mA

- Most common BAS sensor

- Capacitive polymer technology

- Signal: 0-10VDC / 4-20mA (0-100% RH)

- Often combined with temperature sensor

- Non-dispersive infrared (NDIR) technology

- Signal: 0-10VDC / 4-20mA (0-2000 PPM typical)

- Requires warm-up period and annual calibration

- Pressure tube installation and maintenance

- Signal: 0-10VDC / 4-20mA (various ranges)

- Includes water trap troubleshooting

- Split-core CT (current transformer) technology

- Signal: 0-10VDC / 4-20mA proportional to amperage

- Energy monitoring and fault detection

- Motion and presence detection for HVAC and lighting

- Adjustable time delay and sensitivity

- Coverage area planning and dead zone avoidance

- Paddle-type mechanical switches

- Pump status verification and interlock safety

- Installation requires system isolation

- **SSO-Liquid-Level-Sensor.md** - Tank and sump level monitoring

- **SSO-Power-Meter.md** - Energy monitoring and submetering

- **SSO-Air-Quality-Sensor.md** - VOC, PM2.5, multi-parameter sensors

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- OA, RA, EA, mixing box, VAV box dampers

- Torque sizing and coupling installation

- Spring return (SR) vs non-spring (NSR)

- Signal: 0-10VDC / 2-10VDC / 4-20mA input

- Chilled water, hot water, condenser water, steam

- Force sizing and stroke length matching

- Fail-safe modes (normally open/closed)

- Signal: 0-10VDC / 2-10VDC / 4-20mA input

- Pumps, fans, heaters, stages, unit heaters

- Contact sizing for motor and resistive loads

- SPST, SPDT, DPDT configurations

- 0-10VDC speed command + binary start/stop

- Parameter programming and motor setup

- Rotation direction verification critical

- **SSO-Electric-Heat-Staging.md** - Electric heater sequencing and control

- **SSO-Pneumatic-Actuator.md** - Pneumatic damper and valve control

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- Proof of operation (pumps, fans, equipment)

- Alarm monitoring (fire alarm, freeze stat, high limit)

- Status monitoring (filter, flow, door contacts)

- NO vs NC configuration critical

- **SSO-Status-Switch.md** - End switches, limit switches, proof switches

- **SSO-Fire-Alarm-Interface.md** - Fire alarm system monitoring and integration

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- **SSO-BACnet-Device.md** - BACnet MS/TP and BACnet/IP devices

- **SSO-Modbus-Device.md** - Modbus RTU and Modbus TCP integration

- **SSO-Network-Switch.md** - Managed switch configuration for BAS

- **SSO-Controller-Setup.md** - DDC controller installation and commissioning

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- Example: `SSO-Temperature-Sensor-001.md`

- Each document includes version number and date

- Major revisions increment version (1.0 → 2.0)

- Minor updates increment decimal (1.0 → 1.1)

- Review cycle: Annual or as needed

- **Mobile Access:** QR codes on printed docs link to digital versions

- **Offline Access:** Download all SSOs for offline field use

- **Search:** Full-text search available in digital library

- **Updates:** Subscribe to notifications for document updates

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1. Review **SSO-Template-Brief.md** to understand document structure

2. Select SSO for device you're installing

3. Follow **Installation Checklist** step-by-step

4. Complete **Post-Install Verification**

5. Document installation in Service Fusion with photos

6. Hand off to Field Specialist for commissioning

1. Select SSO for device you're commissioning

2. Complete **Pre-Power Verification** tests

3. Follow **Power-Up Procedure**

4. Perform all **Proof Out Tests**

5. Complete **Calibration** if required

6. If problems arise, follow **Troubleshooting** section

7. Complete **Escalation Checklist** before calling for help

1. Use SSOs to understand device specifications

2. Reference **Expected Readings** for programming

3. Use **Troubleshooting** to diagnose field issues remotely

4. Understand device capabilities and limitations

1. Use SSOs for scope understanding

2. Reference for timeline estimation

3. Tool and material planning

4. Quality control verification

5. Training material for new hires

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These SSO documents support the company training program:

- Review SSO-Template to understand format

- Study SSO-Temperature-Sensor (most common device)

- Practice using checklists in training environment

- Use SSOs during installation tasks

- Complete post-install verification checklists

- Document installations per SSO requirements

- Master proof-out procedures from SSOs

- Use troubleshooting sections systematically

- Understand escalation process

- Network Specialists: Focus on communication device SSOs

- Programmers: Reference expected readings and device capabilities

- Graphic Developers: Understand device data points and ranges

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- **Errors or Omissions:** Submit via Service Fusion ticket to Technical Training

- **Suggested Improvements:** Email [training@example.com]

- **New Device Requests:** Request SSO for devices not in library

1. Field feedback collected quarterly

2. Technical review by senior specialists

3. Updates approved by Technical Lead

4. New version published and distributed

5. Notification sent to all field staff

- **Critical Updates:** Immediate notification via email/text

- **Minor Updates:** Included in quarterly revision

- **Major Revisions:** Training session for significant changes

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⚠️ **CRITICAL SAFETY REMINDERS**

- **Always follow company safety procedures** - SSOs supplement but don't replace

- **Wear required PPE** - Don't skip safety equipment

- **Lockout/Tagout** - Required for high-voltage and rotating equipment

- **Verify voltage** - Never assume power is off - test with meter

- **Qualified personnel for electrical work** - Some devices require licensed electrician

- **When in doubt, ask** - Better to ask than get hurt

- **Emergency: 911** - For serious injuries, call emergency services immediately

- **Current Transducers:** High-voltage electrical work - qualified electrician preferred

- **VFD Control:** High-voltage and stored energy - qualified personnel only

- **Relay Outputs:** High-voltage applications - lockout/tagout required

- **Flow Switches:** System isolation required - coordinate with mechanical contractor

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- Manufacturer installation manuals (always consult for device-specific details)

- ASHRAE standards and guidelines

- National Electrical Code (NEC)

- OSHA safety standards

- NFPA 70E (Electrical Safety in the Workplace)

- Local building codes and regulations

- **Technical Training:** [Phone/Email]

- **Safety Manager:** [Phone/Email]

- **Dispatch Coordinator:** [Phone]

- **After-Hours Emergency:** [Phone]

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- Template: 1

- Input Devices: 7 (Temperature, Humidity, CO2, Pressure, Current, Occupancy, Flow)

- Output Devices: 4 (Damper Actuator, Valve Actuator, Relay, VFD Control)

- Binary Inputs: 1 (Binary Input Module)

- **Total Active SSOs:** 13

- Input Devices: 3

- Output Devices: 2

- Binary Inputs: 2

- Network Devices: 4

- **Total Planned:** 11

**Target Library Size:** 25-30 SSO documents covering 95% of common field installations

**Completion Status:** 13/24 (54%)

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1. **Temperature Sensor** - SSO Temp Sensor.md

2. **Damper Actuator** - SSO Damper Actuator.md

3. **Valve Actuator** - SSO Valve Actuator.md

4. **Relay Output** - SSO Relay Output.md

5. **Binary Input** - SSO Binary Input.md

- [ ] Correct device model verified

- [ ] Location matches blueprints

- [ ] Required tools and materials on hand

- [ ] Safety equipment worn (PPE)

- [ ] Building operator notified

- [ ] Lockout/tagout if required

1. Check supply voltage

2. Verify wiring connections tight

3. Test continuity end-to-end

4. Compare to wiring diagram

5. Check for physical damage

6. Document all readings

7. Take photos

8. Complete escalation checklist before calling

- ⚠️ Lock out power source

- ⚠️ Verify 0V with meter

- ⚠️ Wear insulated gloves

- ⚠️ Arc-rated clothing if required

- ⚠️ Only qualified personnel

- **Supervisor:** [Phone]

- **Dispatch:** [Phone]

- **Safety:** [Phone]

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|Version|Date|Changes|Author|

|---|---|---|---|

|1.0|Dec 2025|Initial library creation with 7 core SSOs|Technical Training Dept|

|1.1|Dec 2025|Added 6 additional SSOs (Current, VFD, Binary Input, Occupancy, Flow)|Technical Training Dept|

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**Document Owner:** Technical Training Department

**Last Updated:** December 2025

**Next Review:** March 2026

**Feedback:** training@example.com

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