Heat-controller Water Source Heat Pump User Manual Page 12
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Section 1 WattMaster WHP
1-6 Design Guide
WHP Sequence of
Operation
HVAC Mode of Operation
There are four possible modes of operation. These are Cooling Mode, Heating Mode,
Vent Mode, and the Off Mode. The HVAC mode of operation is calculated the same way
in both occupied and unoccupied modes of operation.
Off Mode The schedule is off and no overrides are active. There is no heating or
cooling demand in the space. Under these conditions, all outputs will be
off and the analog output will be set to 0.0 vdc.
Vent Mode No heating or cooling demand exists during the occupied mode of
operation. The fan will be on if the WHP is programmed for Constant Fan
operation. The compressor demand request will not be sent to the Loop
Controller. If no WHP units are sending a request, the Loop Controller
will discontinue operation after 15 minutes.
Cool Mode A cooling demand is generated when the space temperature rises half the
amount of the Deadband Setpoint above the currently active Cooling
Setpoint. The space is considered satisfied when it drops that amount
below the Cooling Setpoint.
Heat Mode A heating demand is generated when the space temperature drops half the
amount of the Deadband Setpoint below the currently active Heating
Setpoint. The space is considered satisfied when it rises that amount above
the Heating Setpoint.
- WHP - Water Source Heat Pump 1
- Design, Installation & 1
- Operations Manual 1
- WattMaster WHP 3
- Section 1 5
- Conventions 7
- General Information 8
- WattMaster WHP Control System 10
- Make Up Air Controller 11
- WHP Sequence of 12
- Operation 12
- Occupied/Unoccupied Mode of 13
- Vent Mode Operation 13
- Off Mode of Operation 13
- WHP Loop Controller 16
- Sequence of Operations 16
- Pump VFD Control 17
- Compressor Control 17
- Heat Rejection Control 18
- Heat Addition Control 18
- Staged Heat Addition 19
- Proportional Heat Addition 19
- Water Temperature Alarming 20
- Fire Alarm 20
- System Manager 21
- Typical WHP Controller Wiring 21
- Section 1 WattMaster WHP 22
- 1-16 Design Guide 22
- Section 2 23
- Tips Before Beginning 25
- Installation 25
- System Overview 26
- Communications Loops 27
- TO OTHER MINILINKS 28
- (NETWORK TERMINALS ONLY) 28
- TO OTHER WHP CONTROLLERS 28
- WattMaster WHP Section 2 31
- Installation and Wiring 2-7 31
- Duct Sensor with Thermowell 34
- Outside Air Temperature 36
- CommLink II Interface 37
- WHP Controller 38
- CAUTION! 39
- Addressing 41
- MiniLink Addressing 42
- Room Sensors 43
- Room Sensor 44
- Supply Air Temperature 45
- Leaving Water 46
- Temperature Sensors 46
- Section 3 47
- LCD/Keypad Operations 49
- System Manager Layout 50
- Keypad Functions 50
- System Manager LED Indicators 51
- Heat Pump Status 52
- Status Screen #1 53
- Status Screen #2 53
- Status Screen #3 54
- Status Screen #4 54
- Status Screen #5 54
- Status Screen #6 55
- View Alarms 56
- Set Time & Date 57
- Programming Date 58
- Daylight Savings Adjustments 58
- New Passcodes 59
- Rebuild Alarm Map 60
- Heat Pump Setpoints 61
- Setpoint Screen #2 62
- Setpoint Screen #3 62
- Setpoint Screen #4 62
- Setpoint Screen #5 63
- Setpoint Screen #6 63
- Setpoint Screen #7 63
- Setpoint Screen #8 64
- Setpoint Screen #9 64
- Setpoint Screen #10 64
- Setpoint Screen #11 65
- Setpoint Screen #12 65
- Setpoint Screen #13 65
- Setpoint Screen #14 66
- Setpoint Screen #15 66
- Setpoint Screen #16 66
- Setpoint Screen #17 67
- Setpoint Screen #18 67
- Setpoint Screen #19 67
- 2) WHP Schedules 68
- Holidays 69
- 3) Reset Pumps 70
- Loop Controller Status 71
- Status Screen #3 72
- Status Screen #4 72
- Status Screen #7 74
- Status Screen #8 74
- Loop Controller Setpoints 75
- Setpoint Screens #13 79
- Section 3 WattMaster WHP 80
- 3-32 Programming 80
- Section 4 81
- 1.0 Communications 83
- Overview 83
- Communications Loop Routing 85
- 2.0 WHP Controller 86
- Controller 87
- 2.2.2 Analog Inputs 88
- 2.2.6 WHP Controller Wiring 90
- 3.0 Loop Controller 91
- 3.2.1 Analog Inputs 92
- 3.2.2 Analog Output 92
- 3.2.3 Binary Output 93
- 3.2.7 Power Terminal 94
- 4.0 Start-Up 96
- 4.3 Communications Checklist 97
- Information 98
- Communications Loop Wiring 100
- 4.5 Setting Address Switches 101
- WattMaster WHP Section 4 102
- 5.0 Troubleshooting 103
- 5.2 Alarms 105
- 5.3.7 (continued) 113
- Diagram Overvie 117
- Measurements 117
- 5.4.1 (continued) 118
- Caution: AIN1 – Fire/Smoke 118
- Comm Driver Chip Replacement 122
- E-mail: [email protected] 126
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