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Start-Up and Troubleshooting This document is subject to change without notice. WattMaster Controls, Inc. assumes no responsibility for errors, or omissions herein. WHP Installation & Operations Manual - Form WM-WHP-IO-02A Copyright 2004 WattMaster Controls, Inc. All rights reserved. Section 1 Table of Contents Conventions .....................................................................1 General Information.........................................................2 Water Source Heat Pump Units .......................................................................................2 Water Source Heat Pump Systems ..................................................................................3 WattMaster WHP Control System...................................................................................4 WHP Controller ...........................................................................................................4 Make Up Air Controller...............................................................................................5 WHP Sequence of Operation ...........................................6 HVAC Mode of Operation...............................................................................................6 Occupied/Unoccupied Mode of Operation ......................................................................7 Vent Mode Operation ......................................................................................................7 Off Mode of Operation ....................................................................................................7 HVAC Operation w/ Reversing Relay.............................................................................8 HVAC Operation w/ Heat/Cool Relays...........................................................................9 WHP Loop Controller Sequence of Operations.............10 Summary........................................................................................................................10 Pump Control.............................................................................................................10 Pump VFD Control....................................................................................................11 Compressor Control...................................................................................................11 Heat Rejection Control ..................................................................................................12 Staged Heat Rejection................................................................................................12 Heat Addition Control ...................................................................................................12 Staged Heat Addition.................................................................................................13 Proportional Heat Addition........................................................................................13 Water Temperature Alarming........................................................................................14 Fire Alarm......................................................................................................................14 Notes:.............................................................................16 Table of Figures Figure 1-1: Typical Water Source Heat Pump..............................................................3 Figure 1-2: Typical Water Source Heat Pump System.................................................3 Figure 1-3: Typical WattMaster WHP System...........................................................15 Design Guide WattMaster WHP Section 1 Conventions This document uses the following definitions throughout as a guide to the user in determining the nature of the information presented: Note: Additional information which may be helpful. Tip: Suggestion to make installation, set-up, and troubleshooting easier. Caution: Items which may cause the equipment not to function correctly but will not otherwise damage components. Warning: Errors which can result in damage to equipment and void warranties. Design Guide Section 1 WattMaster WHP General Information Water Source Heat Pump Units A water source heat pump is a self-contained water-cooled packaged heating and cooling unit with a reversible refrigerant cycle. Its components are typically enclosed in a common casing, and include a tube-in-tube heat exchanger, a heating/cooling coil, a compressor, a fan, a reversing valve and controls. Design Guide WattMaster WHP Section 1 Design Guide 1-3 Figure 1-1: Typical Water Source Heat Pump During the cooling mode, the tube-in-tube heat exchanger functions as a condenser and the coil as an evaporator. In heating mode, the tube-in-tube heat exchanger functions as an evaporator and the coil as a condenser. A reversing valve is installed in the refrigerant circuit permitting changeover from heating to cooling, and vice versa. The condenser and ...