- WattMaster Water Source Heat Pump Operations Manual

Section 1
Design Guide
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