WattMaster Install and Op AZ basic systems WM-AZB-IO-02B-ALL

Basic System Installation Operations Manual 02B Basic Installation Operations Manual 1 System Overview 2 Installation and Wiring 3 Programming 4 Start Up and Troubleshooting document is subject to change without notice Controls Inc assumes no responsibility errors or omissions herein Basic Installation Operations Manual Form WM AZB IO 02B is a registered trademark of WattMaster Controls Inc 2003 WattMaster Controls Inc rights reserved 1 of Contents 1 Information 3 of System Components 3 Considerations 5 Diversity 5 Partial Load Conditions 5 Partial Load Conditions 7 Conditions 7 Pressurization 7 Guide 8 1 Zoning 8 2 Sizing the Central Unit 10 3 Duct Design Considerations 10 4 Room Air Motion Diffuser Selection 11 5 Bypass Damper Sizing 11 6 Zone Dampers 13 Dampers 15 Dampers 15 Independent Zone Dampers 16 Heat Control Options 17 Expansion Board 18 of Figures Tables 1 1 Auto Zone Basic System 2 1 2 Control Zones Affected by the Outdoor Load 9 1 3 Locating the Static Pressure Sensor for Bypass Damper Control 12 1 4 Round Damper Dimensions 14 1 5 Rectangular Damper Kit Dimensions 14 1 1 Round Air Damper Selection 15 1 2 Rectangular Damper Selection 15 1 3 Pressure Independent Flow Factors 16 Guide Basic 1 document uses the following definitions throughout as a guide to the user in the nature of information presented Additional information which may be helpful Suggestion to make installation set up and troubleshooting easier Items which may cause the equipment not to function correctly but will otherwise damage components Errors which can result in damage to equipment and void warranties Guide 1 Basic Temp Temp HVAC Unit Panel 1 2 1 2 OPEN CLOSE ALL ZONES EACH ZONE HVAC UNIT CLEAR ALARMS STEP ENTER DECIMAL By Others Temp Air Air Dampers to 16 Zone Air Dampers Allowed Baud Link II Loop Zone Actuator Sensor Optional Adj Controller Sensor I R Loop VAC 1 1 Auto Zone Basic System Guide Basic 1 Information primary application of the Auto Zone system is to provide multiple controlled zones from a single zone constant volume and unitary heating and air package unit It can also be applied to existing installations for improved to multiple zones currently controlled by a single thermostat of System Components typical Auto Zone system is comprised of the following four basic components Manager Zone Manager is a microprocessor based controller which monitors up to 16 zones the system The zone manager then controls the HVAC unit to satisfy the requirements each individual zone while maintaining efficient operation and comfort The zone is also responsible for controlling duct static pressure the Auto Zone Basic version the Zone Manager has a display and a keypad The 4 line 20 character display is backlighted making it easier to read in low light environments Damper bypass damper controls proper duct static pressure to insure proper airflow The is modulated by the Zone Manager based on a signal received from the static sensor connected to the main duct Controller Zone Controller monitors space temperature and allocates proper airflow to the zone to achieve desired comfort and ventilation levels If supply air temperature benefit the local zone temperature setpoint the zone damper modulates to reduce or airflow as needed If supply air will not benefit the local zone the controller will the damper actuator to a minimum position and wait for a change in supply air Guide 1 Basic Sensor patented zone sensor is of a flush wall mounted design A special plate on the face the sensor accurately senses space conditions As a result of its unique design the zone rejects the influence of internal wall temperature effects The sensor comes in four configurations Sensor only Sensor w push button override override is fixed at 2 hours Sensor w setpoint adjustment Sensor w override setpoint adjustment combination of these sensor configurations can be used with the system Guide Basic 1 Considerations the following items when designing a system using Auto Zone Diversity Auto Zone system is designed to improve tenant comfort by dynamically re the air distribution when used with a typical constant volume rooftop unit If zones with extremely different load conditions are serviced by a rooftop unit the result will be poor control and excessive wear due to cycling of equipment is especially important to avoid mixing interior zones which require cooling all year exterior zones which may require constant heat during winter months If you must zones under these conditions consider using either VAV boxes with heat or separate heat on exterior zones Auto Zone systems offer a variety of methods to additional zone heat to help you avoid problems Partial Load Conditions engineer must be aware of several potential problems when applying the Auto Zone during cold weather operation Ambient Temperature Lockout very cold weather it is common for mechanical systems to have temp which protect equipment from damage if operated under these conditions also provides user programmed lockouts for protection purposes although safeties should always be used as the