Heat Controller Water Source Heat Pump - Manual (Page 5)

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