Heat Controller Water Source Heat Pump User Manual

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WHP - Water Source Heat Pump

Design, Installation &

Operations Manual

Revision 02A

WattMaster WHP

Installation & Operations Manual

Section 1.................................................................................... Design Guide

Section 2...................................................................Installation and Wiring

Section 3....................................................................................Programming

Section 4....................................................... 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

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 1-1

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

1-2 Design Guide

WattMaster WHP Section 1

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 evaporator tubes are designed to accept hot and cold refrigerant liquid or gas.

Water Source Heat Pump Systems

The water source heat pump system is, by definition, a heat recovery system. It is best applied to buildings that have simultaneous cooling and heating loads. This is the case during winter months when the interior zones of a typical building require cooling while the exterior zones require heating. When a water source heat pump system is used, the heat rejected by the cooling units is used to warm the zones calling for heat. A water heater is generally used for adding heat to the condensing water during peak heating periods, if necessary. The system also utilizes a water cooling tower to reject the heat energy from the condenser water loop during periods of high cooling demand.

Water source heat pump units can be suspended in the ceiling plenum, floor mounted behind walls or placed directly in the occupied space as a console unit. There are also rooftop and unit ventilator type water source heat pumps.

Figure 1-2:

Typical Water Source Heat Pump System

Water source heat pump systems generally cost less to install than central built-up systems. They offer individual zone control with the added flexibility of being able to

Design Guide 1-3

Section 1 WattMaster WHP

accommodate changes in location and sizes as thermal zones or zone occupancy change. This system is often installed in ceiling plenums, which frees up valuable floor space.

Another valuable benefit of water source heat pumps is that they can accommodate simultaneous calls from zones requiring heating or cooling. Depending on the climate, outside air may require preheat or cooling prior to being introduced to the unit. In the example of ceiling mounted water source heat pumps, put outside air ducts near each unit to improve indoor air quality.

Normally, multiple units serve an occupied space. This gives component redundancy to the system so if one unit were to fail, the other units could back it up until the unit was repaired. The packaged design of most unit types allows quick change-out by service personnel so maintenance can typically be performed off site.

As with any HVAC system, there is a negative side as the water source heat pump system often requires higher maintenance costs than conventional air side systems. The system also typically has a shorter replacement life than other systems because of continuous fan and compressor operation during heating and cooling modes. The system can also create room noise since the compressor and fan are commonly located close to the zone occupant. Placing units away from the occupied space and ducting the supply air to the zone can minimize potential noise problems.

WattMaster WHP Control System

The WattMaster WHP system is used to control the water loop and the individual water source heat pumps installed in a typical water source heat pump system. The WHP system is an excellent alternative over programmable thermostats. The WHP control system provides one central location to monitor and program all the water source heat pumps on the system instead of having to program each water source heat pumps thermostat individually. The system has many features typically not found with programmable thermostats such as: central operators interface, heating/cooling failure alarm, auxiliary alarm, and holiday scheduling, to name but a few.

WHP Controller

The Water Source Heat Pump Controller (WHP) is used for controlling individual water source heat pump units. The WHP Controller can operate stand-alone or it can be used with the Water Source Heat Pump Loop Controller and in this configuration shares common data, such as outside air temperature, proof of flow etc., over a network. A System Manager is connected to the WHP Controller to provide a central operators interface to all WHP Controllers on the network. WHP Controllers are designed with Room Temperature, Room Setpoint Adjust, Discharge Air Temperature, Leaving Water Temp or Dirty Filter Alarm and Auxiliary Lockout inputs. Relay outputs provided are; Fan (Continuous or Cycling), Reversing Valve-ON/OFF, Compressor-ON/OFF, Heat

1-4 Design Guide

WattMaster WHP Section 1

Pump Reset and Aux. Heating or Cooling. An internal seven day schedule and holiday schedule functions are also built into each WHP Controller.

With the WHP system the sometimes complex control requirements of a large water source heat pump system can be handled with an off the shelf controls system that has most of the features of a full blown building automation system but at a much lower cost. Included with the WHP system is a communications interface module, which allows you to connect a computer to the system onsite and a modem connection for remote monitoring.

Prism, a Windows based software package is available at no additional charge. Some of Prism’s features include graphics, trend logging, and remote alarm call out capabilities. WHP Loop Controller The Water Source Heat pump Loop Controller can be supplied with the system to control the water loop and its various pieces of equipment. The Loop Controller can operate stand-alone or used with the Water Source Heat Pump Controller (WHP) and in this configuration communicates common data, such as outside air temperature, proof of flow etc., over a network. A System Manager is connected to the Loop Controller to provide a central operator’s interface to the Loop Controller’s setpoints and operating configurations. The Loop Controller is designed with inputs for Supply and Return W ater Temperature, Outdoor Air Temperature, Loop Water Pressure Switch or 0-50 PSI Loop Pressure Sensor (4-20ma), Manual Reset Contact, Phase Loss Contact, Request to Run Relay, and Fire/Smoke Relay. Analog outputs (0-10VDC) are supplied for Pump VFD and Proportional Heat. Binary outputs are provided for Compressor Enable, Main Pump Relay, Standby Pump Relay, Alarm Contacts and (8) Relays that can be configured for Heat Rejection or Heat Addition.

Make Up Air Controller

A Make Up Air Controller, for treating 100% outdoor air, is available for use with the Water Source Heat Pump system. Please consult factory for more information on this product.

Design Guide 1-5

Section 1 WattMaster WHP

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.

1-6 Design Guide

WattMaster WHP Section 1

Occupied/Unoccupied Mode of Operation

Since the WHP contains its own built in Real Time Clock, it can operate from its own internal scheduling system. This schedule supports two Start & Stop events per day and up to 14 Holiday periods. The Holidays all use the same special Holiday Start/Stop times programmed by the user.

If the current operating mode is unoccupied, the WHP can accept a push-button override back to the occupied mode. Push-button overrides are not recognized if the current mode is already occupied. The push-button override duration is user programmed. If the user wants to extend the current override without reprogramming the Duration, they can reinitialize the existing programmed period by pressing the override button anytime during the current override. If the current override had been active for 1 hour and 45 minutes and the user presses the push-button again, the override will reset for another 2 hour period (if they programmed a 2 hour period), bringing the total override time to 3 hours and 45 minutes. If the user wants to cancel an override before it can time-out, simply hold the push-button for a period of time between 3 and 10 seconds.

The WHP calculates its current heating and cooling setpoints based on the current mode of operation. If the command is for unoccupied mode, the WHP adds the unoccupied setbacks to the occupied heating and cooling setpoints.

Vent Mode Operation

During occupied hours when there is no heating or cooling demand, the WHP reverts to a Vent Mode of operation. The fan is running and the heating and cooling outputs are held off.

See the section titled HVAC Mode of Operation for a graphical description of how the Vent Mode is calculated.

Off Mode of Operation

After the schedule goes unoccupied and both heating and cooling demands go away, the fan stops running, all relay outputs are turned off. No outputs are allowed to activate in the Off Mode until a heating or cooling demand occurs. During occupied hours this would be the Vent Mode.

Design Guide 1-7

Section 1 WattMaster WHP

HVAC Operation w/ Reversing Relay

If the user has configured the WHP to control a Reversing Valve and a Compressor, the following sequence of operation occurs during a heating or cooling demand.

Note: If you configure the WHP to look for a proof of flow Enable signal from the

Loop Controller then the following sequence assumes a request was made by the WHP during a demand condition and that the Loop Controller gave permission for the WHP to start its compressor. Otherwise, the WHP will ignore the Enable signal and operate anytime there is a heating or cooling demand.

a. If the last mode was the opposite of the current demand mode, make sure

the Changeover Delay has been satisfied.

b. If the unit is configured to control an Isolation Valve, the valve relay is

activated ( Relay #5 ). The Minimum Off Timer is reset to ZERO and must be satisfied before any further operations are allowed.

c. If the current mode requires the Reversing Valve to be activated, its relay

contact is closed and a 10 second delay is started.

d. Ten seconds after the Reversing Valve is activated, the Compressor relay

is activated.

e. If the Space Temperature continues to exceed the affected setpoint by the

full amount of Deadband and you have configured for 2 stages in the current mode of operation, relay #5 will activate for the second stage of heating and/or cooling. A second stage of either implies that no Isolation Valve exists!

f. Once the Space Temperature has crossed back over the affected setpoint,

stage 2 will be turned off if the unit has a stage 2.

g. As the Space Temperature continues to cross back over the affected

setpoint by half the Deadband value, the compressor will then be allowed to turn off if the Minimum Run Time has been satisfied.

1-8 Design Guide

WattMaster WHP Section 1

HVAC Operation w/ Heat/Cool Relays

If the user has configured the WHP to control Individual Heating and Cooling relays the following sequence of operation occurs during a heating or cooling demand.

NOTE: If you configure the WHP to look for a proof of flow Enable signal from the

Loop Controller then the following sequence assumes a request was made by the WHP during a demand condition and that the Loop Controller gave permission for the WHP to operate its heating or cooling. Otherwise, the WHP will ignore the Enable signal and operate anytime there is a heating or cooling demand.

Once a heating or cooling demand exists, the following conditions must be met before any relays can be activated:

a. Make sure any stages of the opposite mode are staged off.

b. Verify the system has been configured for at least one stage of heating or

cooling.

c. Make sure the Minimum Cycle Time has been satisfied.

d. If the last mode was the opposite demand mode, make sure the

Changeover Delay has been satisfied.

e. Check the current Minimum Off Timer to make sure this stage has been

off long enough since the last time it was cycled on and back off.

f. If there is more than 1 stage, check the Minimum Run Time from the

previous stage to be sure it has elapsed before activating the second stage.

g. Make sure the Space Temperature Demand is the full amount of Deadband

from the setpoint before activating the second stage.

h. Once the compressor or stage 2 has been turned off, a Minimum Off Time

must be satisfied before it can stage on again. A Minimum Cycle time can also be utilized to limit the number of times per hour that the compressor can be activated. If you don’t need this limitation, set the Minimum Cycle Time to be shorter than the Minimum Run Time setpoint.

i. If the Reversing Valve was configured to cycle with the compressor, it will

now turn off also. It can be configured to remain active until the opposite mode of operation is called for to reduce wear on the valve.

Design Guide 1-9

Section 1 WattMaster WHP

WHP Loop Controller Sequence of Operations

Summary

The Water Source Heat Pump Loop Controller waits for a Request to Run signal from a Heat Pump or from a Binary Contact Closure. Once the request is received the Loop Controller activates a Pump to initiate water flow to the Heat Pumps. Once the pump is activated and proof of flow has been determined, a Global is broadcast to all Heat Pumps to enable them to go ahead and run their compressors. The main goal of the Loop Controller is to provide water flow and to maintain the loop water temperature by monitoring either the Loop Inlet or Loop Outlet temperature. If a higher temperature is required, Heat Addition is enabled. If the temperature needs to be lowered, Heat Rejection is enabled.

Once the Loop Controller has been activated by a request, it will run for a minimum of 15 minutes to prevent cycling on and off due to borderline requests from the Heat Pumps.

If a Fire Alarm is detected, the Loop Controller generates a Global broadcast to all Heat Pumps to turn off.

If the High Pressure option is configured, the Loop Controller can generate a Global broadcast to force the Heat Pumps to open their Isolation Valves to reduce loop pressure if the high limit has been exceeded.

Pump Control

If WattMaster Water Source Heat Pump Controllers are used in conjunction with the Loop Controller, a Global Binary signal from the attached Heat Pumps sends a Request to run or Enable to Run command to the Loop Controller. If the Loop Controller is used in a stand alone configuration, a contact closure on the AIN 2 of the Analog Expansion board gives the controller a request to run. When a request to run is received, the Loop Controller activates a pump to initiate water flow to the heat pumps. The pumps can either be constant flow or controlled by a VFD. If the request goes away for at least one minute, the request to run command is removed. If the loop controller has been running a minimum of 15 minutes then it can be turned off, since there is no longer a request to run. If the proof of flow is lost while the pumps are running, the pump is shut off immediately if the changeover to the Standby Pump had already been made.

The pumps are Lead/Lag controlled based on a user definable number of hours. If one pump exceeds the other pumps run time by this amount, the lead is changed until that

1-10 Design Guide

WattMaster WHP Section 1

pump exceeds the first pumps run time by the same amount. This keeps both pumps with roughly the same number of hours on each pump. Changeover occurs at the time the run time setpoint is exceeded. The running pump is shut off at the same time the standby pump is energized, this prevents any down time or alarms. The unit can be configured to control either the Loop Inlet temperature or the loop outlet temperature.

A user adjustable low outdoor air temperature setting of XX degrees will allow the unit to run the pumps continuously for protection against freezing.

If the pump is constant volume, and the pump has been started, it has 3 seconds to generate flow or the standby pump is activated. If the pump is controlled by a VFD, once it starts, it has 60 seconds to generate flow and if it doesn’t the standby pump is activated. If the standby pump fails, an alarm is generated and the Loop controller deactivates any active heat rejection or addition stages. At the same time an alarm is generated, we energize relay #5 on the Loop Controller board so that it may used to turn on a local alarm signal.

Loop flow can be determined by a binary contact closure on input #3 or a 0 to 50 PSI pressure sensor on input #3. If a pressure sensor is used, the user can program the pressure setpoint that needs to be met for proof of flow.

Pump VFD Control

An optional Pump VFD signal can be modulated if the system is configured for proportional control and a pressure sensor is attached to analog input #3. At a user defined rate, the VFD signal is ramped up when the pressure is below a user defined setpoint by a user defined deadband. The signal ramps down when the pressure exceeds the setpoint by the deadband value. If the pressure ever exceeds the high pressure setpoint, an emergency override activates and begins cutting the VFD signal in half each time the control loop is polled by the software. This protects against run away over-pressurization.

The pump relay outputs are still activated and Lead/Lagged as described above and the pump relay remains on until the Request signal is removed, provided it has been operating for at least 15 minutes.

Compressor Control

Anytime a pump is running and proof of flow has been established, the compressor output is activated.

Design Guide 1-11

Section 1 WattMaster WHP

Heat Rejection Control

If the compressor is not running, no heat rejection can be active. If any heat rejection is still active when the compressor is turned off, the heat rejection will be immediately removed, without regard to any minimum run or off times.

Heat rejection cannot be active at the same time as heat addition, so any heat addition is removed or staged off before the heat rejection can be started.

A maximum of 8 stages of heat rejection can be controlled.

Staged Heat Rejection

Heat Rejection is staged up based on a different deadband level for each stage. Basically, if the user programmed a 2° deadband, then the first stage could activate at the setpoint, stage 2 would activate 2° above the setpoint, stage 3 would activate 4° above the setpoint, etc...

Staging down is calculated in the same manner, except the water temperature would need to drop below the setpoint by the deadband amount. If stage 3 was activated at 4° above setpoint, it would de-activate when the temperature fell to within 2° of setpoint, stage 2 would de-activate at setpoint and stage 1 would de-activate 2° below setpoint.

A user defined staging up and down interval must be met before any heat rejection stages can be added or removed. If the selected Water Temperature is above the current staging level and the timer has been satisfied, an additional stage can be added, up to the maximum available 8 stages. If the selected Water Temperature is below the staging down level and the timer has been satisfied, a stage can be removed.

Heat Addition Control

If the compressor is not running, no heat addition can be active. If any heat addition is still active when the compressor is turned off, the heat addition will be immediately removed, without regard to any minimum run or off times.

Heat addition cannot be active at the same time as heat rejection, so any heat rejection is removed or staged off before the heat addition can be started.

A maximum of 4 stages of heat addition can be controlled or proportional heating can be configured, and an analog output signal will be modulated to control the heat.

1-12 Design Guide

WattMaster WHP Section 1

Staged Heat Addition

Heat Addition is staged up based on a different deadband level for each stage. Basically, if the user programmed a 2° deadband, then the first stage could activate at the setpoint, stage 2 would activate 2° below the setpoint, stage 3 would activate 4° below the setpoint, etc...

Staging down is calculated in the same manner, except the water temperature would need to increase above the setpoint by the deadband amount. If stage 3 was activated at 4° below setpoint, it would de-activate when the temperature rises t o within 2° of setpoint, stage 2 would de-activate at setpoint and stage 1 would de-activate 2° above setpoint.

A user defined staging up and down interval must be met before any heat addition stages can be added or removed. If the selected Water Temperature is below the current st aging level and the timer has been satisfied, an additional stage can be added, up to the maximum available 8 stages. If the selected Water Temperature is above the staging down level and the timer has been satisfied, a stage can be removed.

Proportional Heat Addition

If the Water Temperature is below the addition setpoint, a Boiler Enable relay is activated. If the Water Temperature rises 1° above the setpoint the Boiler Enable relay is de-activated.

At a user defined rate, the analog output signal is proportionally controlled from 0.0 VDC at 1° above setpoint to the full 10.0 VDC signal as the water temperature drops below the setpoint by the user defined deadband amount. If a 5° deadband was entered, the maximum voltage would be reached at 4° below the setpoint and the minimum volt age would be set at 1° above the setpoint. Since this is strictly proportional control, at 1.5° below setpoint the controller would set 5.0 VDC since that would be half the deadband amount.

Design Guide 1-13

Section 1 WattMaster WHP

Water Temperature Alarming

The controlling water temperature is monitored to prevent it from exceeding both a user defined High and Low Alarm Limit. If either limit is exceeded for a user defined length of time, an alarm is generated and the compressor output is de-activated. If the high limit is exceeded, the heat addition outputs are de-activated and if the low limit is exceeded, the heat rejection outputs are de-activated. The alarming and shutdown only pertains to the controlling water temperature. This does not affect the pump operation.

If a external manual alarm reset button is connected between ground and input #5, All outputs are turned off and ALL timers are reset. This forces the loop controller to stage off. This reset WILL shut down the pumps and force them to restart!

Fire Alarm

If the Fire Alarm is activated on input #1 of the Analog Input Expansion Board (Contact OPENS for Alarm!) then ALL outputs and timers are reset and held off for the duration of the Fire Alarm signal.

If the Fire Alarm is not required, input #1 of the Analog Input Expansion Board must have a shorting wire to ground to allow the equipment to operate.

1-14 Design Guide

WattMaster WHP Section 1

COMPUTER (OPTIONAL)

RS-485

Comm Loop

32K

COMM

RELAY OUTPUT

Room Sensor

with Optional

Override & Adj.

COM 1-3

SHLD

OUT

1 OUT

RAM EPROM

485

LD4

COMM

OUT 3

REC.

OUT

OUT 4 OUT 5 COM

CPU

4-5

COMM

12V

TEST

ADDRESS ADD

AIN 1 AIN 2 AIN 3

EWDOG

AIN 4 AIN 5 GND

GND

0-5 VDC

AOUT

PWR

PRESSURE

GND

SENSOR

YS101564

0-1 VDC

24VAC

24 VAC

110/24 VAC

Power Pak

Modem

(Optional)

T R

S D

A A

CommLink II

Multiple Loop

Interface

COMM

LINK

L O

O D

E M

WCLI

MiniLink

Loop # 1

MINILINK

NETWORK

1 2

24VAC24VAC

GND

LOOP

O O

24VAC

MiniLink

Loop # 2

MINILINK

NETWORK

1 2

24VAC24VAC

GND

LOOP

O O

24VAC

Typical Network & Local Loop Wiring 2 Conductor Twisted Pair with Shield (Beldon #82760 or Equivalent)

MiniLink

Loop # 3

MINILINK

NETWORK

1 2

24VAC

GND

LOOP

O O

24VAC

NOTE: * Only One Outside Air Sensor

is Required per WHP System

MiniLink

Loop # 4

MINILINK

NETWORK

1 2

24VAC

GND

LOOP

O O

Loop # 4

Notes:

1.) 24 VAC Must Be Connected So That All Ground Wires Remain Common.

2.) All Wiring To Be In Accordance With Local And National Electrical Codes and Specifications.

24VAC

110/24 VAC

Power Pak

Network Loop

RS-485

19200 Baud

Local Loop

RS-485

9600 Baud

Local Loop

RS-485

9600 Baud

Local Loop

RS-485

9600 Baud

*OutsideAir

Sensor

Supply

Air

or Leaving Water Temp

Sensor

Typical WHP Controller Wiring

32K

COMM

RELAY OUTPUT

COM 1-3

SHLD

OUT

RAM EPROM

485

LD4

COMM

OUT

REC.

OUT

COM

CPU

4-5

COMM

12V

TEST

ADDRESS ADD

AIN 1 AIN 2 AIN 3

EWDOG

AIN 4 AIN 5 GND

GND

0-5 VDC

AOUT

PWR

PRESSURE

GND

SENSOR

YS101564

0-1 VDC

24VAC

System Manager

32K 8K

COMM

RELAY OUTPUT

COM 1-3

SHLD

OUT

OCCUPIED

ALARMS

03/31/04 03:38PM WED

OUT

RAM EPROM

485

LD4

COMM

OUT 3

REC.

OUT

OUT 4 OUT 5 COM

CPU

4-5

COMM

12V

TEST

ADDRESS ADD

AIN

EWDOG

AIN

5 GND

GND

0-5

VDC

AOUT

PWR

PRESSURE

GND

SENSOR

YS101564

0-1

VDC

24VAC

32K 8K

COMM

RELAY OUTPUT

COM 1-3

SHLD

OUT

1 OUT

RAM EPROM

485

LD4

COMM

OUT 3

REC.

OUT

OUT 4 OUT 5

COM

CPU

4-5

COMM

12V

TEST

ADDRESS ADD

AIN

EWDOG

AIN

5 GND

GND

0-5

VDC

AOUT

PWR

PRESSURE

GND

SENSOR

YS101564

0-1 VDC

24VAC

WHP Loop Controller

C21

CX1

CX2

RN1

CX4

TB1 COMM

SHLD

CX5

LD6

COMM

LD7 PWR

LD8 LED1

LD9 LED2

TESTPOINT

RV1 VREFADJ

INPUTS

+VDC

AIN1

AIN2 AIN3

AIN4

AIN5

GND GND AOUT1

AOUT2 AIN7 GND

PJ1

TB3

PRESSURE SENSOR

EXPANSION

2 D

2 Y L R

COM1-3

3 D

PAL

RS-485

EPROM

RAM

COMM

3 Y

TUC-5RPLUS

(1MEG)

YS101816REV.2

YS101790

4RLYIOBD.

COM4-5

Y L R

+VREF

TB2

CX6

5.11V

C S IP

EWDOG

H P

R28

Y L

ADD

ADDRESS

4RLYIOBD.

RN5

NE5090NPB3192

PU1

0PS

PU2

TOKEN

PU3

NETWORK

SW1 PU4

D9 PU5

D11

C10

PU7

-1

-5 D

JP1

D14

C12

U13

CX13

D15

C17

U15

C20

CX15

R26

AIN1

CX10

AIN2

AIN3

U10

AIN4

GND

CX12

1 1

D12

AOUT1

9936

R13

MC34064A

SC1

C13

R15

U12

CX14

C14

C16

R19

U14

TB4

C15

D19

GND

R22

7 2

R24

R25

7824CT

24VAC

VR1

VR2

T'STAT

3.) The Local Loop With The Loop Controller Installed Can Only Have Up To 29 WHP Controllers Attached As The WHP Loop Controller Occupies Address #30.

4.) Systems may consist of up to 20 Local Loops (600 WHP Controllers). Consult factory for systems that exceed these quantities.

4ANALOGIN MOD I/O BD.

YS101784

COMM

SHLD

LD4

YS101790

REC.

12V AIN

AIN

5 GND

GND

AOUT

PRESSURE SENSOR

RAM EPROM 485 COMM

ADDRESS ADD

EWDOG

YS101564

32K 8K

COM 1-3

COM

CPU

4-5

COMM

TEST

0-5

VDC

0-1

VDC

See Note #3

RELAY OUTPUT

OUT 1 OUT 2 OUT 3 OUT

OUT 4 OUT 5

PWR

GND

24VAC

Dirty Filter Alarm

Loop #1

WHP

Controllers

Loop #2

WHP

Controllers

Loop #3

WHP

Controllers

Loop #4

WHP

Controllers

Local Loop

RS-485

9600 Baud

COMM

LD4

REC.

PRESSURE SENSOR

COMM

SHLD

LD4

REC.

12V AIN

AIN

GND

AOUT

PRESSURE SENSOR

SHLD

12V AIN 1 AIN 2 AIN 3 AIN 4 AIN 5 GND

GND

AOUT

#30

SHLD

LD4

REC.

12V AIN 1 AIN 2 AIN 3 AIN 4 AIN 5 GND

GND

AOUT

PRESSURE SENSOR

#30

YS101564

COMM

SHLD

LD4

REC.

PRESSURE SENSOR

YS101564

485 COMM

YS101564

RAM EPROM 485 COMM

ADDRESS ADD

EWDOG

#30

12V AIN 1 AIN 2 AIN 3 AIN 4 AIN 5 GND

GND

AOUT

YS101564

#29

RAM EPROM 485 COMM

ADDRESS ADD

EWDOG

32K 8K

RELAY OUTPUT COM 1-3 OUT 1 OUT

RAM EPROM

2 OUT 3 OUT

OUT 4 OUT 5 COM

CPU

4-5

COMM

TEST

ADDRESS ADD

EWDOG

0-5 VDC

PWR

GND

0-1 VDC

24VAC

32K 8K

RELAY OUTPUT COM 1-3 OUT 1 OUT 2 OUT 3 OUT

OUT 4 OUT 5 COM

CPU

4-5

COMM

TEST

0-5

VDC

PWR

GND

0-1

VDC

24VAC

32K

RELAY

OUTPUT COM 1-3 OUT

1 OUT

RAM EPROM

485

COMM

OUT

3 OUT

OUT

4 OUT

5 COM

CPU

4-5

COMM

TEST

ADDRESS ADD

EWDOG

0-5

VDC

PWR

GND

0-1

VDC

24VAC

32K 8K

RELAY

OUTPUT COM 1-3 OUT 1 OUT 2 OUT

3 OUT

OUT 4 OUT

5 COM

CPU

4-5

COMM

TEST

0-5 VDC

PWR

GND

0-1 VDC

24VAC

Figure 1-3:

Typical WattMaster WHP System

Design Guide 1-15

Section 1 WattMaster WHP

Notes:

1-16 Design Guide

Section 2

Table of Contents

Tips Before Beginning Installation.................................. 1

Communications Loops ...................................................3

Communications Loop Wiring Overview....................................................4

WHP Loop Controller .......................................................6

WHP Loop Controller Addressing ....................................9

Supply & Return Water Temperature Sensors.............. 10

Outside Air Temperature Sensor................................... 12

CommLink II Interface................................................... 13

WHP Controller ..............................................................14

WHP Controller Addressing ...........................................17

MiniLink Addressing ...................................................... 18

Room Sensors ................................................................ 19

Supply Air Temperature Sensor .................................... 21

Leaving Water Temperature Sensors............................ 22

Installation and Wiring

Section 2

Table of Figures

Figure 2-1: System Overview........................................................................................2

Figure 2-2: Communication Loop Wiring, Daisy-Chain Configuration .......................4

Figure 2-3: WHP Loop Controller.................................................................................6

Figure 2-4: WHP Loop Controller Wiring ....................................................................7

Figure 2-5: WHP Loop Controller Address Switch Setting..........................................9

Figure 2-6: Duct Sensor with Thermowell...................................................................10

Figure 2-7: Strap-On Water Temperature Sensor ........................................................11

Figure 2-8: Outside Air Temperature Sensor...............................................................12

Figure 2-9: CommLink Interface Wiring.....................................................................14

Figure 2-10: WHP Controller .....................................................................................14

Figure 2-11: WHP Controller Wiring.........................................................................15

Figure 2-12: WHP Controller Address Switch Setting...............................................17

Figure 2-13: MiniLink Address Switch Setting.........................................................18

Figure 2-14: Room Sensor Wiring..............................................................................19

Figure 2-15: Room Sensor..........................................................................................20

Figure 2-16: Supply Air Temperature Sensor..............................................................21

Figure 2-17: Water Temperature Sensor .....................................................................22

Figure 2-18: Water Temperature Sensor .....................................................................22

Installation and Wiring

WattMaster WHP Section 2

Tips Before Beginning Installation

Take a few moments to review the following before beginning installation of the WattMaster WHP System.

• Familiarize yourself with all system components and review all documentation. Pay

special attention to “Cautions” and “Warnings” since these may keep you from experiencing unnecessary problems.

• Before installing controllers, be sure to tag it with its appropriate location. It is also

best to set the controller address switches before mounting. Use the WHP Address Worksheet to list all WHP unit locations. This will assist you greatly when setting up the system.

• Be sure and install all wiring according to local, state, and national electric codes.

• Pay close attention to communication wiring since the most common mistakes are

made in this area. Polarity is the most important rule. Make notes on your wiring diagrams as to which color wire you will be using on each terminal.

• When in doubt - ask! Contact your local WattMaster distributor if you have any

questions. The only dumb questions are the ones you don’t ask.

• Remember - each electronic device contains only one puff of smoke. If you release it,

you have voided the warranty! So please be careful and pay attention.

Installation and Wiring 2-1

Section 2 WattMaster WHP

COMPUTER (OPTIONAL)

RS-485

Comm Loop

32K

COMM

RELAY OUTPUT

Room Sensor

with Optional

Override & Adj.

COM 1-3

SHLD

OUT

1 OUT

RAM EPROM

485

LD4

COMM

OUT 3

REC.

OUT

OUT 4 OUT 5 COM

CPU

4-5

COMM

12V

TEST

ADDRESS ADD

AIN 1 AIN 2 AIN 3

EWDOG

AIN 4 AIN 5 GND

GND

0-5 VDC

AOUT

PWR

PRESSURE

GND

SENSOR

YS101564

0-1 VDC

24VAC

24 VAC

110/24 VAC

Power Pak

Modem

(Optional)

T R

S D

A A

CommLink II

Multiple Loop

Interface

COMM

LINK

L O

O D

E M

WCLI

N T

R O

S, N

MiniLink

Loop # 1

MINILINK

NETWORK

1 2

24VAC

GND

LOOP

O O

24VAC

MiniLink

Loop # 2

MINILINK

NETWORK

1 2

24VAC

GND

LOOP

O O

24VAC

Typical Network & Local Loop Wiring 2 Conductor Twisted Pair with Shield (Beldon #82760 or Equivalent)

MiniLink

Loop # 3

MINILINK

NETWORK

1 2

24VAC

GND

LOOP

O O

24VAC

NOTE: * Only One Outside Air Sensor

is Required per WHP System

MiniLink

Loop # 4

MINILINK

NETWORK

1 2

24VAC24VAC

GND

LOOP

O O

Loop # 4

Notes:

1.) 24 VAC Must Be Connected So That All Ground Wires Remain Common.

2.) All Wiring To Be In Accordance With Local And National Electrical Codes and Specifications.

24VAC

110/24 VAC

Power Pak

Network Loop

RS-485

19200 Baud

Local Loop

RS-485

9600 Baud

Local Loop

RS-485

9600 Baud

Local Loop

RS-485

9600 Baud

*OutsideAir

Sensor

Supply

Air

or Leaving Water Temp

Sensor

Typical WHP Controller Wiring

32K

COMM

RELAY OUTPUT

COM 1-3

SHLD

OUT

RAM EPROM

485

LD4

COMM

OUT

REC.

OUT

COM

CPU

4-5

COMM

12V

TEST

ADDRESS ADD

AIN 1 AIN 2 AIN 3

EWDOG

AIN 4 AIN 5 GND

GND

0-5 VDC

AOUT

PWR

PRESSURE

GND

SENSOR

YS101564

0-1 VDC

24VAC

System Manager

M P 8

O N

24VAC

32K 8K

COMM

RELAY OUTPUT

COM 1-3

SHLD

OUT

1 OUT

RAM EPROM

485

LD4

COMM

OUT 3

REC.

OUT

OUT 4 OUT 5 COM

CPU

4-5

COMM

12V

TEST

ADDRESS ADD

AIN

EWDOG

AIN

5 GND

GND

0-5

VDC

AOUT

PWR

PRESSURE

GND

SENSOR

YS101564

0-1

VDC

24VAC

32K 8K

COMM

RELAY OUTPUT

COM 1-3

SHLD

OUT

1 OUT

RAM EPROM

485

LD4

COMM

OUT 3

REC.

OUT

OUT 4 OUT 5

COM

CPU

4-5

COMM

12V

TEST

ADDRESS ADD

AIN 1 AIN 2 AIN 3

EWDOG

AIN 4 AIN 5 GND

GND

0-5

VDC

AOUT

PWR

PRESSURE

GND

SENSOR

YS101564

0-1 VDC

24VAC

WHP Loop Controller

C21

CX1

CX2 U2

RN1

CX4

TB1 COMM

SHLD

CX5

LD6

COMM

LD7 PWR

LD8 LED1

LD9 LED2

RV1 VREFADJ

INPUTS

+VDC

AIN1

AIN2 AIN3

AIN4

AIN5

GND GND AOUT1

AOUT2 AIN7 GND

PJ1

TB3

PRESSURE SENSOR

2 D

2 Y L R

COM1-3

3 D

PAL

RS-485

EPROM

RAM

COMM

3 Y

TUC-5RPLUS

(1MEG)

YS101816REV.2

YS101790

4RLYIOBD.

COM4-5

Y L R

+VREF

TB2

CX6

5.11V

TESTPOINT

C S IP

EWDOG

H P

R28

Y L

ADD

ADDRESS

4RLYIOBD.

RN5

NE5090NPB3192

PU1

0PS

PU2

TOKEN

PU3

NETWORK

SW1

PU4

D9 PU5

D11

C10

PU7

-1

-5 D

JP1

D14

C12

U13

CX13

D15

C17

U15

C20

CX15

R26

EXPANSION

AIN1

CX10

AIN2

AIN3

U10

AIN4

GND

CX12

1 1

D12

AOUT1

9936

R13

MC34064A

SC1

C13

R15

U12

CX14

C14

C16

R19

U14

TB4

C15

D19

GND

R22

7 2

R24

R25

7824CT

24VAC

VR1

VR2

T'STAT

3.) The Local Loop With The Loop Controller Installed Can Only Have Up To 29 WHP Controllers Attached As The WHP Loop Controller Occupies Address #30.

4.) Systems may consist of up to 20 Local Loops (600 WHP Controllers). Consult factory for systems that exceed these quantities.

4ANALOGIN MOD I/O BD.

YS101784

COMM

SHLD

LD4

YS101790

REC.

12V AIN

AIN

5 GND

GND

AOUT

PRESSURE SENSOR

RAM EPROM 485 COMM

CPU

ADDRESS ADD

EWDOG

YS101564

32K 8K

RELAY

OUTPUT COM 1-3

OUT

5 COM 4-5

4-5

COMM

TEST

0-5

VDC

PWR

GND

0-1

VDC

24VAC

See Note #3

Dirty Filter Alarm

Loop #1

WHP

Controllers

Loop #2

WHP

Controllers

Loop #3

WHP

Controllers

Loop #4

WHP

Controllers

Local Loop

RS-485

9600 Baud

#30

32K 8K

COMM

RELAY OUTPUT

COM 1-3

SHLD

OUT

1 OUT

RAM EPROM

485

LD4

COMM

OUT 3

REC.

OUT

OUT 4 OUT 5 COM

CPU

4-5

COMM

12V

TEST

ADDRESS ADD

AIN 1 AIN 2 AIN 3

EWDOG

AIN 4 AIN 5 GND

GND

0-5 VDC

AOUT

PWR

PRESSURE

GND

SENSOR

YS101564

0-1 VDC

24VAC

#30

32K 8K

COMM

RELAY OUTPUT

COM 1-3

SHLD

OUT

1 OUT

RAM EPROM

485

LD4

COMM

OUT 3

REC.

OUT

OUT 4 OUT 5 COM

CPU

4-5

COMM

12V

TEST

ADDRESS ADD

AIN

EWDOG

AIN

5 GND

GND

0-5

VDC

AOUT

PWR

PRESSURE

GND

SENSOR

YS101564

0-1

VDC

24VAC

#30

32K

COMM

RELAY OUTPUT

COM 1-3

SHLD

OUT

RAM EPROM

485

LD4

COMM

OUT

REC.

OUT

COM

CPU

4-5

COMM

12V

TEST

ADDRESS ADD

AIN 1 AIN 2 AIN 3

EWDOG

AIN 4 AIN 5 GND

GND

0-5

VDC

AOUT

PWR

PRESSURE

GND

SENSOR

YS101564

0-1

VDC

24VAC

#29

32K 8K

COMM

RELAY OUTPUT

COM 1-3

SHLD

OUT

1 OUT

RAM EPROM

485

LD4

COMM

OUT

REC.

OUT

OUT 4 OUT

COM

CPU

4-5

COMM

12V

TEST

ADDRESS ADD

AIN 1 AIN 2 AIN 3

EWDOG

AIN 4 AIN 5 GND

GND

0-5 VDC

AOUT

PWR

PRESSURE

GND

SENSOR

YS101564

0-1 VDC

24VAC

Figure 2-1:

System Overview

2-2 Installation and Wiring

WattMaster WHP Section 2

Communications Loops

The Communications Loop is two wire shielded RS-485. The loop is best connected in daisy chain configuration, meaning the loop is connected from one controller to another. It is not necessary to sequentially address the WHP Controllers in relation to their location on the loop. Cable must be Belden No. 82760 or equivalent.

Tip: Incorrect wiring of the communications loop is the most common mistake made

during installation. Before beginning installation, write down the wire color used on each terminal connection and consistently maintain that color code. It is recommended that a continuous wire run be made between devices. Anytime a splice is made in the cable you increase your chance of problems.

Caution: Make sure when you are inserting wires into the terminal blocks that

strands of wire do not stick out and touch the next terminal. This could cause a short or erratic operation.

Installation and Wiring 2-3

Section 2 WattMaster WHP

STANDARD WALL MOUNT

120/24 VAC POWER SUPPLY

( MAY ALSO BE POWERED FROM 2 4VAC )

(NETWORK TERMINAL S ONLY)

SYSTEM MANAGER POWER SUPPLY

GND

24VAC

POWER

LOOP

CPU

2 4 V A C

G N D

V1V2V3V5V4

M U8

CX10

CX12

CX14

CX13

INPUTS

RS-485

COMM

LED1

LED2

VREF ADJ

TEST POINT

CX15

Communications Loop Wiring Overview

03/31/04 03:38P M WED

OCCUPIED

COMPUTER (OPTIONAL)

NO ALARMS

SYSTEM MANAGER

(SET TO MULTIPLE LOOP)

COMMUNICATIONS

SHLD

RS-485

COMM LINK II

INTERFACE

UNIT COMES WITH

S101716 REV. 1

Remote Link (OPTIONAL)

COMM

T SHLD R

LD4

REC.

12V

IN 1

AIN

5 GND GND

OUT

PRESSURE SENSOR

COMM

T SHLD R

LD4

REC.

12V

IN 1 AIN 2 AIN 3 AIN 4 AIN 5 GND

GND

OUT

PRESSURE SENSOR

NETWORK

C21

CX1

RN1

TB1

T HLD

CX5

LD6

LD7

PWR

LD8

RN3

LD9

+VREF

5.11V

EWDOG

RV1

R28

VDC

RN5

IN1 IN2

IN3 IN4 IN5

C10

GND GND

C12

AOUT1 AOUT2 AIN7

D15

C17

GND

PJ1

TB3

C20

R26

PRESSURE SENSOR

GND

24VAC

EXPANSION

CX2

CX3

CX4

RLY1

D2D3D4D5

RLY2RLY3RLY4RLY5

OM1-3

PAL

EPROM

RAM

PHILIPS

ADD

ADDRESS

1 2 4

PU1

PU2

TOKEN

PU3

NETWORK

SW1 PU4 D9 PU5 D11 PU7

0-5

0-1

VDC

D14

JP1

U13

U15

PJ3

PJ2

TUC-5R PLUS

(1 MEG)

YS101816 REV. 2

RN2

OM4-5

TB2

CX6

RN4

NE5090NPB3192 0PS

CX8

U10

D10

R10

D13

D12

C11

993

R13

R11

U11 MC34064A

SC1

C13

R15

U12

C14

C16

R19

U14

C15

R22 R24 R25

TB4

D19

GND

R27

D16

D18

D17

POWER

C19

C18

7824CT

24VAC

VR1

VR2

T'STAT

RLY IO BD.

RLY IO BD. IN1

IN2 IN3

IN4 GND AOUT1

YS101790

ANALOG IN MOD I/O BD.

S101784

TO OTHER MINILINKS

Figure 2-2:

Communication Loop Wiring, Daisy-Chain Configuration

RELAY

OUTPUT COM 1-3 OUT

RAM EPROM

COMM

DDRESS AD D

EWDOG

S101564

RAM EPROM

COMM

DDRESS ADD

EWDOG

S101564

OUT

2 OUT

3 OUT

OUT

4 OUT

5 COM 4-5

-5

COMM

EST

0-5

VDC

PWR

GND

0-1

VDC

24VAC

2K 8K

RELAY

OUTPUT COM 1-3 OUT

1 OUT

2 OUT

3 OUT

OUT

4 OUT

5 COM 4-5

-5

COMM

EST

0-5

VDC

PWR

GND

0-1

VDC

24VAC

TO OTHER WHP CONTROLLERS

2-4 Installation and Wiring

WattMaster WHP Section 2

The daisy chain is the best method for running a communications loop since there is only one starting point and one ending point for each of the communications loops. Even though the daisy chain configuration is preferred, the star configuration can also be used. If required, a combination of the two can also be used. Remember, the best communication loop wiring is the one which utilizes the minimum number of ends while using the shortest wiring path.

Note: The loop does not have to follow the controller address sequence.

Caution: If the comm loop is not installed in conduit, be careful to position the

cable away from high noise devices like fluorescent lights, transformers, VFD’s, etc. Conduit is not required for comm loop wiring unless required by local codes.

Make sure CommLink jumper is set for “Multi”.

Installation and Wiring 2-5

Section 2 WattMaster WHP

RLY1D1D

2D3D4D5CX

C3C

R11U1

D13

R10

CX8U9X1R7D10

RN4

LY2RLY3RLY4RLY5

6.2’’

WHP Loop Controller Expansion Board

WHP Loop Controller Main Board

.20 Dia.

V A

A /

V J

JO3JO4JO2J

WHP Loop Controller

The WHP Loop Controller may be installed in any convenient protected location. It is recommended that the loop controller be mounted indoors in a secure location, that is not subject to extremes in temperature or moisture.

Typ. of 4

7.3”

TB1

COMM

SHLD

LD6

COMM

LD7 PWR

LD8

LED1

LD9

LED2

INPUTS

+VDC AIN1 AIN2 AIN3 AIN4 AIN5 GND GND AOUT1

AOUT2

AIN7 GND

PJ1

TB3

PRESSURE SENSOR

C21

RN1

CX5

RN3

+VREF

TEST POINT

RV1 VREF ADJ

RN5

C10

C17

EXPANSION

CX1

RS-485

COMM

5.11V

EWDOG

R28

ADDRESS

PU1 D6 PU2 D7 PU3 D8 PU4 D9 PU5 D11 PU7 D14

C12

U13

D15

C20

R26

PJ2

CX2

RAM

YS101816 REV. 2

PHILIPS

ADD

1 2 4 8 16

32 TOKEN

NETWORK

SW1

0-5

0-1

VDC

JP1

R15

C14

R19

CX13

U15

C15

R22 R24 R25

CX15

PJ3

EPROM

TUC-5R PLUS

U10

C11

U14

CX10

U12

CX14

D17

T'STAT

6.7”

(1 MEG)

CX4

PAL

CX6

CX12

D18

D12 R13

SC1

D19

C19

C18

7824CT

VR1

VR2

D16

COM1-3

COM4-5

NE5090NPB3192 0PS

R27

993

R1 R2 R3 R4 R5

MC34064A

C13

C16

GND

POWER

24VAC

TB2

9.5”

6.6”

TB4

B 1

R 8

C 8

R20

1K1

4RLY IO BD.

1K1

4RLY IO BD.

IN1

IN2

IN3 AIN4

GND

OUT1

R10

T C 4 2 8 7

S 1 0 1 7 8 2

2.12”

5A250VAC

CONTACT:

24VDC

G5L-114P-PS

OMRON

5A250VAC

CONTACT:

24VDC

G5L-114P-PS

OMRON

YS101790

K 2

5A250VAC

CONTACT:

24VDC

G5L-114P-PS

OMRON

5A250VAC

CONTACT:

24VDC

G5L-114P-PS

OMRON

S101790

PU1

PU2

R8 R9

S L O

M O D U L R I O B D .

PU3

PU4

LM358

C 7

RN1

4 ANALOG IN MOD. I/O BD. YS101784

R 9

R 1 8

C 1

P 1

ULN2803A/

PHILIPS

T L HA AN I D

74HC04N

PCF8574P

CX3

U 3

C 1

P 1

ULN2803A/

PHILIPS

T L HA AN I D

74HC04N

PCF8574P

CX1

P C F 8 5 9 1 P

R10 R11 R12

8.29”

CX3

U 3

P 1

T L HA

PHILIPS

AN I D

P 4

8.96”

0.28”

4.24”

4.0”

Figure 2-3:

WHP Loop Controller

2-6 Installation and Wiring

WattMaster WHP Section 2

R (24 VAC By Others)

WHP Loop Controller Expansion Board

R10

R11

Fire Alarm Contact (N.C.)(See Note 5)

4.)When a Water Pressure Transmitter

Required VA For T ransformer

2 4 V A C

G N D

24 VAC

Heating/Cooling #4

Heating/Cooling #3

Heating/Cooling #2

Heating/Cooling #1

RLY1D1D2D3D4D5CX3

C3C

PHILIPS

PALC

GND

24VAC

D16

R6C9S

R11U1

D13

R10

C18

CX8U9X1R7D10

R13D

U12U

PJ3

EXPANSION

C15R19R15C

D18D1

0-5VDC0-1VD

C11

RN4

RN3

RN2

RLY2RLY3RLY4RLY

(

Return Water Temp Sensor

See Note 4

Optional Pressure Transmitter

Manual Reset

Pump VFD

Optional Modulating Heat

Notes:

1.)24 VAC Must Be Connected So

2.)All Wiring To Be In Accordance

3.)All Communication Wiring To Be

Connect T o Next WHP Controller

And/Or MiniLink On Local Loop

Local Loop RS-4 85

9600 Baud

Outside Ai r Temp. Sensor

Supply Water Temp Sensor

Proof of Flow

Phase Loss

That All Ground Wires Remain Common.

With Local And National Electrical Codes And Specifications.

2 Conductor Twisted Pair With Shield. Use Belden #82760 Or Equivalent.

TB1

COMM

SHLD

LD6

COMM

LD7 PWR

LD8 LED1

LD9 LED2

INPUTS

+VDC AIN1 AIN2 AIN3 AIN4 AIN5 GND

GND AOUT1 AOUT2

AIN7 GND

PJ1

TB3

PRESSURE SENSOR

CX5

RV1 VREF ADJ

C21

RN1

+VREF

TEST POINT

CX1

CX2

RS-485

RAM

COMM

5.11V

EWDOG

R28

ADD

DDRESS

RN5

C10

C12

C17

R26

2 4

PU1

PU2

TOKEN

ETWORK

PU3

SW1

PU4 D9 PU5 D11 PU7 D14

JP1

U13

CX13

D15

U15

C20

CX15

PJ2

Request to Run Contact (N.O.)

22 24 25

PROM

UC-5R PLUS

S101816 RE V. 2

T'STAT

1 MEG)

CX10

CX12

CX14

D19

C19

7824CT

N.C. Pilot Duty Relays

COM1-3

R1 R2 R3 R4 R5

COM4-5

E5090NPB3192

0PS

993

R27

(By Others)

Compressor Enable

Main Pump

N.C. Pilot Duty Relays

(By Others)

Standby Pump

Alarm Indicator

MC34064A

Loop Controller = 8VA Min.

GND

POWER

24VAC

Line Voltage

See Note 1

RLY IO BD.

YS101790

RLY IO BD.

IN1 IN2

IN3

IN4

GND

OUT1

Relay Contacts

(By Others)

ANALOG IN MOD I/O BD.

S101784

Is Used, a 250 Ohm Resistor is Installed Between AIN3 & GND and The Pull Up Resistor PU3 is Removed.

5.)If a Fire Alarm Contact is Not Connected to AIN1 on The Analog Expansion Board, Then a Jumper Must Installed Between AIN1 and GND.

Figure 2-4:

WHP Loop Controller Wiring

Installation and Wiring 2-7

Section 2 WattMaster WHP

Warning: Polarity is very important when connecting power to the controllers!

The grounded side of the control transformer must be connected to the terminal labeled GND on the controller. If a single transformer is used to power more than one controller you must connect GND-toGND and 24VAC-to-24VAC on each controller. Failure to

observe polarity will result in damage to one or more components in your system.

The WHP Loop Controller requires the following electrical connections:

-24VAC Supply Voltage....................................................2 Conductors (18 Ga. Min.)

-Communications Loop .......2 Conductor twisted pair with shield (18 Ga. Minimum)

(Belden #82760, WattMaster Cable or equivalent)

-Supply Water Temperature Sensor...................................(24 ga. Min.) 2 Conductors

-Return Water Temperature Sensor....................................(24 ga. Min.) 2 Conductors

-Outside Air Temperature Sensor.......................................(24 ga. Min.) 2 Conductors

-Loop Pressure Sensor (Optional)........................................(24 ga. Min) 2 Conductors

-Fire/Smoke Alarm Contacts..............................................(24 ga. Min.) 2 Conductors

-Loop Pressure Switch.........................................................(24 ga. Min) 2 Conductors

-Manual Reset Switch..........................................................(24 ga. Min) 2 Conductors

-Request to Run Contacts ....................................................(24 ga. Min) 2 Conductors

-Analog Outputs...................................................................(24 ga. Min) 2 Conductors

-Binary Outputs....................................................................(24 ga. Min) 2 Conductors

Tip: After making all electrical connections it is advised to unplug all terminal blocks

on the WHP Loop Controller until you are ready to begin the checkout procedure. This may help to prevent damage if wiring errors occur elsewhere in the system during installation or start-up.

2-8 Installation and Wiring

WattMaster WHP Section 2

GND

24VAC

R6C

R11

U11D1

C16V

R10

R7D

R13D

C7C

U12U

TOKEN

NETWORK

Note:

The Power To The Controller Must Be Removed And

Settings In Order For Any Changes To Take Effect.

Disconnect All Communication Loop Wiring From The

Controller Before Removing Power From The Controller.

WHP Loop Controller Addressing

The WHP Loop Controller must be set for address #30. See address setting instructions for the WHP Loop Controller that follow. A maximum of 29 WHP Controllers are allowed on the loop that contains the WHP Loop Controller. All other loops may have 30 WHP Controllers.

This Switch Should Be In The OFF Position As Shown

ADDRESS ADD

Controller Address Switch

INPUTS

+VDC AIN1

AIN2 AIN3

AIN4 AIN5

GND

AOUT1 AOUT2

AIN7 GND

PJ1

TB3

PRESSURE SENSOR

EXPANSION

1 2 4

8 16 32

Reconnected After Changing The Address Switch

Address Swit ch Must Be Set For

Address 30 As Shown

ADD

ADDRESS

RN5

PU1 D6 PU2 D7 PU3 D8 PU4 D9 PU5 D11

C10

PU7 D14

C12

D15

C17

C20

R26

PJ2

1 2 4

8 16 32 TOKEN NETWORK

SW1

0-5

0-1

VDC

JP1

U13

C14

X13

U15

C15

X15

PJ3

X10

C11

R15

X14

R19

R22 R24 R25

D18

D17

Caution

Reconnect Power And Then Reconnect Communication Loop Wiring.

X12

C18

C19

R27

D16

POWER

Figure 2-5:

Installation and Wiring 2-9

WHP Loop Controller Address Switch Setting

Section 2 WattMaster WHP

OE291 Stainless Steel Thermowell

Butt Splice Leads To 24 Gauge

Supply & Return Water Temperature Sensors

Sensors for monitoring supply and return water temperature are available in two main types, fluid immersion temperature sensors (See Figure 2-6) and strap-on sensors (See Figure 2-7). Both are 0-10000 ohm thermistor type sensors. The fluid immersion sensor generally has better accuracy than the strap-on type but either is suitable for typical water source heat pump temperature requirements. The fluid immersion type sensor requires that a thermowell be installed in the pipe and the strap-on type, as its name implies, simply straps around the outside of the pipe. The fluid immersion sensor requires that the pipe be at least 4” in diameter in order to accept the thermowell . The strap-on type sensor is adjustable for use on 1/2” to 6” or larger diameter pipe.

The fluid immersion sensor is provided with a 4” long stainless steel thermowell. It has ½” MPT external threads and ½” FPT internal threads. A ½” FPT fitting to accept the thermowell must be provided by others in the pipe to be monitored, for connection of the thermowell. The thermowell is screwed into the ½” FPT fitting installed by others in the pipe and the sensor probe is then screwed into the ½” FPT fitting on the thermowell.

Leads Are Non-polarized. Wire Minimum. Connect Leads

To "Analog In" And "Ground" At Controller.

1/8-27 NPT External Thread

5.50

OE230 Duct Sensor

The OE230 Duct Sensor Threads In to The OE291 St ainless Steel Thermowell. The OE291 Thermow ell Threads Into A 1/2” FPT Elbow or Tee in the Water Piping of the Water Coil Where You Wish to Measure the Water Temperature. The Pipe must be a minimum of 4” Diameter or an Extende d Tee and Bushing Configuration Must be Used to Accommodate the Length of the Thermowell Assembly.

Figure 2-6:

Duct Sensor with Thermowell

1/8-27 NPSM Internal Thread

1/2" NPT External Thread

3.25

4.94

5.13

2-10 Installation and Wiring

WattMaster WHP Section 2

Thermal Mastic Strip

Supply Or Return

The strap-on type sensor has a brass housing that senses the water temperature through contact with the exterior surface of the pipe. The sensor should be mounted in contact with the underside of the pipe in order to insure accurate temperature readings. The sensor assembly is secured to the pipe by using the supplied wire ties to wrap and secure the sensor to the pipe. Thermal conductive compound is also supplied to insure a good thermal connection with the pipe. The sensors are supplied with 3 foot long wire leads.

Sensing Element (Supplied)

Figure 2-7:

Wire Tire (Supplied)

(Supplied)

Strap-On Water Temperature Sensor

Water Pipe.

Installation and Wiring 2-11

Section 2 WattMaster WHP

Closure Plug

0.21" Dia. x 0.73

0”2

.25

”

Front View

Side View

Back View

Mounting Tab

& Screws - Typ.

2.70”

1.13”

2.30”

Outside Air Temperature Sensor

The outside air sensor must be located where it will not be affected by direct sun or heat producing equipment. Mounting under the eve of a roof is often a good choice.

Caution: Complaints of inaccurate outside sensor readings are very common and

can almost always be shown to be the result of poor sensor location.

Note: All temperature sensors supplied with the system utilize the same thermistor

type sensing element. For troubleshooting sensor problems refer to the TEMPERATURE SENSOR RESISTANCE CHART at the end of Section 4.

Gasketed Cover

Figure 2-8:

Cover Mounting

3.00”

Screw - Typ.

Sensor Tube

Outside Air Temperature Sensor

Mounting Tab & Screw - Typ.

Closure Plug

Lg. Slot - Typ.

2-12 Installation and Wiring

WattMaster WHP Section 2

STANDARD WALL MOUNT

120/24 VAC POWER SUPPLY

( MAY ALSO BE POWERED FROM 24VAC )

(NETWORK TERMINALS ONLY)

YS101716 REV. 1

SYSTEM MANAGER POWER SUPPLY

GND

24VAC

POWER

LOOP

CPU

2 4 V A C

G N D

V2V3V5

M U8

CX10

CX12

CX14

CX13

INPUTS

RS-485

COMM

LED1

LED2

VREF ADJ

TEST POINT

CX15

CommLink II Interface

The CommLink II Interface provides for communications between the MiniLink communication interfaces installed on the system. The CommLink II is required for proper communications, even if a PC is not used. Locate the CommLink II near the computer or modem if they are installed on the system. The cable connections between the CommLink II and the computer or modem should be kept to less than twenty-five feet. The CommLink II comes complete with computer and modem cables, and a plug-in power supply.

03/31/04 03:38PM WED

OCCUPIED

COMPUTER (OPTIONAL)

NO ALARMS

COMMUNICATIONS

SHLD

RS-485

SYSTEM MANAGER

COMM LINK II

INTERFACE

(MULTIPLE LOOP)

UNIT COMES WITH

Remote Link

(OPTIONAL)

COMM

T SHLD R

LD4

C21

RN1 1

TB1

T HLD

CX5

LD6

LD7

PWR

LD8

RN3

LD9

+VREF

RV1

VDC

RN5

IN1 IN2

IN3 IN4 IN5

C10

GND GND AOUT1

AOUT2

AIN7

C17

GND

PJ1

TB3

PRESSURE SENSOR

GND

24VAC

NETWORK

EXPANSION

CX1

CX2

CX3

CX4

RLY1

D2D3D4D5

RLY2RLY3RLY4RLY5

5.11V

EWDOG

R28

ADDRESS

PU1 D6 PU2 D7 PU3 D8 PU4 D9 PU5 D11 PU7 D14

C12

D15

C20

R26

PJ2

OM1-3

PAL

EPROM

RAM

SW1

0-5 VDC

U13

U15

TUC-5R PLUS

(1 MEG)

YS101816 REV. 2

RN2

OM4-5

TB2

CX6

PHILIPS

ADD

1 2

RN4

NE5090NPB3192 0PS

CX8 16 32 TOKEN NETWORK

U10

D10

R10

D13

D12

C11

993

R11

R13

0-1

U11

VDC

MC34064A

JP1

SC1

C13

R15

U12

C14

C16

R19

U14

TB4

C15

D19

GND

R22 R24

R27

D16

R25

D18

D17

POWER

C19

C18

7824CT

24VAC

PJ3

VR2

VR1

T'STAT

RLY IO BD.

RLY IO BD. IN1 IN2

IN3

IN4 GND AOUT1

YS101790

ANALOG IN MOD I/O BD.

S101784

REC.

12V

AIN

AIN AIN

AIN

GND GND

PRESSURE

SENSOR

COMM

T SHLD R

LD4

REC.

12V

1 AIN 2 AIN 3 AIN 4 AIN 5 GND

GND

PRESSURE SENSOR

TO OTHER MINILINKS

RAM EPROM

85 COMM

COMM

EST

DDRESS ADD

IN 1

2 3

EWDOG

4 5

0-5

VDC

OUT

S101564

COMM

OUT

S101564

GND

0-1

VDC

24VAC

2K 8K

RAM EPROM

COMM

EST

DDRESS ADD

EWDOG

0-5

VDC

GND

0-1

VDC

24VAC

TO OTHER WHP CONTROLLERS

RELAY

OUTPUT COM 1-3 OUT

OUT

5 COM 4-5

4-5

PWR

RELAY

OUTPUT COM 1-3 OUT

1 OUT

2 OUT

3 OUT

OUT

4 OUT

5 COM 4-5

4-5

PWR

Figure 2-9:

CommLink Interface Wiring

Installation and Wiring 2-13

Section 2 WattMaster WHP

EWDOG

DIAGNOSTIC BLINK

RAM SIZE

24 VAC Common for Inputs 1 - 3

Aux. Heating or Cooling (Cool 2)

24 VAC Common for Inputs 1 - 3

Mounting Backplate

WHP Controller

The WHP Controller may be installed in any convenient protected location. Observe the recommended environmental limitations for the WHP Controller when selecting a installation location. The environmental limitations are a temperature range of 10°F to 149°F, and a maximum operating humidity of 90% RH non-condensing.

The WHP Controller may be mounted by fastening to a flat surface through the mounting plate. The unit is mounted by four (4) screws in the corners. Select the correct screws or other fasteners for the type of mounting material being utilized.

COMMUNICATIONS

DRIVER CHIP

RS-485

COMMUNICATIONS

LOOP

COMMUNICATIONS

LED

ADDRESS SWITCH

( ADDRESS 18 SHOWN )

ANALOG INPUTS

Space Sensor

Slide Adjust

Supply Air Temp

Leaving W ater Temp or Dirty Filter

Lockout

STATIC PRESSURE

SENSOR INPUT

COMM

LD4

REC.

PRESSURE

SENSOR

T SHLD

12V AIN

AIN

GND GND

AOUT

PIN 1

INDICATION

YS101564

RAM EPROM

485

COMM

ADDRESS ADD

CPU

RAM

0-5

0-1

SELECT JUMPER

EPROM

32K

COMM

TEST

VDC

PAL

RELAY

OUTPUT COM 1-3

OUT

5 COM 4-5

4-5

PWR

GND

4VAC

Fan-On/Off

Rev. Valve-On/Off (Heat 1)

Compressor-On/Off (Heat 2)

Heat Pump Reset (Cool 1)

CODE LED

REAL TIME

CLOCK CHIP

POWER LED

24VAC

POWER

INPUT

Figure 2-10:

2-14 Installation and Wiring

WHP Controller

WattMaster WHP Section 2

All Comm Loop Wiring Is

Required VA For Transformer

GND

24VAC

PWR

COMM

TEST

RELAY

OUTPUTS

COM

4-5

OUT

OUT3OUT4OUT5COM

1-3

Diagnostic Blink Code LED

MUST HAVE ADDRESS SWITCHES

Straight Thru

And/Or

WHP Controll er

Water Source Heat Pump

COMM

SHLD

LD4 REC.

12V

AIN AIN AIN AIN AIN

GND GND

AOUT

1 2 3 4

R A M

ADDRESS ADD

E P R O M

1 2

GND

24VAC

Unit Connections

24VAC Fan-On/Off Rev. Valve-On/Off Compressor-On/Off

Heat Pump Reset Aux. Heating Or Cooling

Each WHP Controller = 10VA MIN.

Room Sensor

A R M E R

NORMAL

C O O

OVR

L E R

Discharge

Air Temp .

Mount In HVAC

Unit Supply

Air Duct

Sensor

Connect To

Next Controller

MiniLink On

Local Loop

RS-485

9600 Baud

TMP

GND AUX

Connection To AUX Terminal is Reqd Only When Sensor Is Specified With Slide Adjust Option

Dirty Filter

Alarm Contact

Thermowell

Or Surface Mount

Temp Sensor

(Leaving Water Temp)

Optional Features

Figure 2-11:

Lockout

WHP Controller Wiring

(UP TO 30 UNI TS P E R LOCAL LOOP)

LOOP CONTROLLER CONNECTED.

THE LOOP CONTROLLER ADDRESS

CAUTION!

WHP CONTROLLERS

SET BETWEEN 1 AND 30

EXCEPT ON THE LOOP WITH THE

IS 30, WHICH ALLOWS FOR ONLY 29 WHP CONTROLLERS ON THIS

LOCAL LOOP.

Warning: Polarity is very important when connecting power to the controllers!

The grounded side of the control transformer must be connected to the terminal labeled GND on the WHP Controller. If a single transformer is used to power more than one WHP Controller you must connect GND-to-GND and 24VAC-to-24VAC on each WHP Controller. Failure to observe polarity will result in

damage to one or more components in your system.

Warning: Use extreme care not to damage any of the electronic components

while mounting the backplate. Mark the holes then remove the WHP Controller from the backplate before drilling.

Do not allow metal shavings to fall onto the circuit boards.

Installation and Wiring 2-15

Section 2 WattMaster WHP

The WHP Controller requires the following electrical connections: 18 Gauge minimum unless otherwise noted.

-24VAC Supply Voltage...........................................................................2 Conductors

-Communications Loop ...................................... 2 Conductor twisted pair with shield

(WattMaster Cable, Belden #82760 or equivalent)

-Discharge Air Temperature Sensor..................................(24 ga. Min.) 2 Conductors

-Room Air Temperature Sensor...........(24 ga. Min.) 2 Conductors for standard sensor

3 Conductors for sensors with setpoint adjustment

-Outside Air Temperature Sensor.......................................(24 ga. Min.) 2 Conductors

-WHP Unit Control Wiring .........................................................(24 ga.Min.) 24 VAC

Fan- ON/OFF

Rev Valve-ON/OFF

Compressor-ON/OFF

Heat Pump Reset

Aux. Heating or Cooling

Tip: After making all electrical connections it is advised to unplug all terminal blocks

on the WHP Controller until you are ready to begin the checkout procedure. This may help to prevent damage if wiring errors occur elsewhere in the system during installation or start-up.

2-16 Installation and Wiring

WattMaster WHP Section 2

IN ORDER FOR ANY CHANGES TO TAKE EFFECT.

POWER AND THEN RECONNECT THE COMMUNICATIONS

WHP Controller Addressing

IGNORE ANY MARKINGS

OR NUMBERS ON THE SWITCH

To determine the boards address,

add the values of all the switches

which are toggled down in the

NOTE:

USE THE CHART!

direction of the arrow

Figure 2-12:

Installation and Wiring 2-17

WHP Controller Address Switch Setting

NOTE:

ADDRESS 30 CANNOT BE USED ON THE LOOP THAT HAS THE WHP LOOP CONTROLLER A TTACHED. ADDRESS 30 ON THAT LOOP IS RESERVED FOR THE WHP LOOP CONTROLLER.

CAUTION:

YOU MUST POWER DOWN THE CONTROLLER AFTER CHANGING THE ADDRESS SWITCHES

ALWAYS REMOVE THE COMMUNICATIONS LOOP PRIOR TO DISCONNECTING POWER. RECONNECT

LOOP TO THE CONTROLLER.

Section 2 WattMaster WHP

The Power To The MiniLink Must Be Removed And

Reconnected A fter Changi ng The Addre ss Switch

Settings In Order For Any Changes To Take Effect.

ADD

The Address For Each MiniLink

Must Be Unique To The Other MiniLink s

On The Network Loop. Loop #1 MiniLink

Connect To Next

Equivalent.

MiniLink Addressing

MiniLink And /Or

CommLink On

Network Loop

RS-485

19200 Baud

All Communication Loop

Wiring Is Straight Through

Note:

Local Loop

RS-485

9600 Baud

Connect To Next

Controller or

System Manager

Caution!

The MiniLinks Must Have Address Switches Set Between 1 And 30 (Up To 30 MiniLinks Are Allowed Per WHP System System). The MiniLinks Should Be Addressed In Consecutive Order Starting With Address #1. Address #1 Must Be Present On The Loop For The System To Function.

MiniLink Communications Interface

ADD

NETWORK

LOOP

16 32

FF >

T SH R

SH R

1 2 4

24VAC

GND

24VAC

Required VA For Transforme r

MiniLink = 6VA Min.

See Note 1.

These Switches Must B e In The OFF Positio n As Shown

Line Voltage

Caution:

Disconnect All Communication Loop Wiring From The MiniLink Before Removing Power From The MiniLink. Reconnect Power And Then Reconnect Comm un i c at io n Loop Wiring.

Notes:

1.)24 VAC Must Be Connected So That All Ground Wires Remain Common.

2.)All Wiring To Be In Accordance With Local And National Electrical Codes And Specifications.

3.) All Communication Wiring To Be 2 Conductor Twisted Pair With Shield. Use Belden #82760 Or

Figure 2-13:

MiniLink Address Switch Setting

Address Switch Shown Is

Set For Addr ess 1

Loop #2 MiniLi nk Should Be Addressed

MiniLink Address Switch

Should Be Addressed As #1

As #2 Etc..

Address Switch Shown Is

Set For Addr ess 4

2-18 Installation and Wiring

WattMaster WHP Section 2

ADJUSTABLE

ROOM SENSOR WITH OVERRIDE

WHP CONTROLLER

SETPOINT

Room Sensors

The room sensor uses a patented flush mount design to isolate the temperature sensing element from the housing which mounts flush with the wall surface.

Room sensors should be located on an inside wall away from direct sunlight or heat producing equipment such as computers, copiers, etc. Such devices can adversely affect the accuracy of the sensor.

Although the sensor eliminates most of the effects of thermal coupling to the walls, try to avoid walls which retain large amounts of thermal energy (such as marble or steel). Walls containing either cold or warm air currents should also be avoided whenever possible.

Avoid locating the sensor in dead air areas of a room. This will result in slow response to temperature changes in the space.

Mount the sensor approximately 50-60 inches from the floor for best results.

The room sensor is designed to mounted vertically in a standard 2 by 4 inch electrical box. The sensor may be mounted directly into the drywall where electrical codes do not require low voltage wiring to be enclosed in conduit. See enclosed sheet for dimensional and installation data.

Tip: Be careful when cutting the hole for the sensor or the plastic bezel of the sensor

may not completely cover the opening.

AND ADJUSTABLE SETPOINT

PRESSURE SENSOR

12V

AIN

GND

1 2

OUT

A R M E R C O O

OVR

L E R

TMP

GND AUX

SETPOINT

OVERRIDE

ONLY REQUIRED WHEN USING ADJUSTABLE

Figure 2-14:

Room Sensor Wiring

Installation and Wiring 2-19

Section 2 WattMaster WHP

0.25“

2.75“

2.00“

Handy Box (By Others)

4.50“

2.50"

Connect the terminal labeled GND on the zone sensor to the terminal labeled GND on the WHP Controller Analog Input terminal block. Connect the terminal labeled TMP on the zone sensor to the terminal labeled AIN 1 on the WHP Controller Analog Input terminal block. If the zone sensor has a setpoint adjust slider, then connect the sensor terminal labeled AUX to the WHP Controller AIN 2 terminal block.

Tip: If sensors must be installed on walls which are solid and cannot be penetrated,

surface mounted boxes and raceway can be purchased from your local electrical distributor.

3.25“

Figure 2-15:

2.75“

W A R M E

C O O

L E

Room Sensor

0.88“

TMP

GND

AUX OUT

all Cut-Out Dimension When Sensor Is To Be Mounted Without

2-20 Installation and Wiring

WattMaster WHP Section 2

Mounting Plate

1/4" Hex Head Sheet Metal Screws

Drill 5/16" Hole In Ductwork For Probe

Leads Are Non-polarized.

Supply Air Temperature Sensor

The supply air temperature sensor should be located in the duct, as close to the rooftop unit discharge as possible for best response.

Locate the sensor in the center of the widest part of the duct. Use the supplied template and a 5/16" drill to make a hole for the sensor. Install the gasket over the probe and mount securely to the duct using the supplied sheet metal screws. Be sure the gasket is compressed to provide an air tight seal.

For best accuracy, apply insulation on the outside of the duct, over the sensor. This will help prevent thermal gradients from affecting the sensor.

Thread Together

Butt Splice Leads To 24 Gauge Wire Minimum. Connect Leads To "Analog In" And "Ground" At Controller.

4.0"

3/4"

5-1/2" (OE230)

11-1/2" (OE231)

Mounting Plate

Gasket

Adhesive Backed Drill Guide Mounting Template

Duct Work

Figure 2-16:

Installation and Wiring 2-21

Supply Air Temperature Sensor

Section 2 WattMaster WHP

OE291 Stainless Steel Thermowell

Butt Splice Leads To 24 Gauge

At Controller.

Thermal Mastic Strip

Supply Or Return

Leaving Water Temperature Sensors

The leaving water temperature sensor (optional) when used should be located on the leaving water piping close to the water source heat pump unit. Either a thermowell type or a surface mount sensor may be used depending on job requirements.

Leads Are Non-polarized. Wire Minimum. C onnect Leads

To "Analog In" And "Ground"

1/8-27 NPT External Thread

5.50

OE230 Duct Sensor

The OE230 Duct Sensor Threads Into The OE291 Stainless Steel Thermowell. The OE291 Thermowell Threads Into A 1/2” FPT Elbow or Tee in the Water Piping of the Water Coil Where You Wish to Measure the Water Temperature. The Pipe must be a minimum of 4” Diameter or an Extended Tee and Bushing Configuration Must be Used to Accommodate the Length of the Thermowell Assembly.

Figure 2-17:

Water Temperature Sensor

Sensing Element (Supplied)

Wire Tire (Supplied)

1/8-27 NPSM Interna l Thread

1/2" NPT External Thread

3.25

4.94

5.13

Water Pipe.

Figure 2-18:

2-22 Installation and Wiring

Water Temperature Sensor

(Supplied)

Section 3

Table of Contents

LCD/Keypad Operations................................................... 1

System Manager Layout...................................................................................................2

Keypad Functions ............................................................................................................2

System Manager LED Indicators.....................................................................................3

Heat Pump Status Screens.............................................. 4

View Status Only.............................................................................................................4

View Alarms....................................................................................................................8

Menu Setpoints ................................................................................................................9

Set Time & Date ..............................................................9

New Passcodes.............................................................. 11

Rebuild Alarm Map......................................................... 12

Heat Pump Setpoints..................................................... 13

Heat Pump Setpoint Menu.............................................................................................13

1) WHP Setpoints ..........................................................................................................13

2) WHP Schedules.........................................................................................................20

Holidays.........................................................................................................................21

3) Reset Pumps ..............................................................................................................22

Loop Controller Status ..................................................23

Loop Controller Status Menu.........................................................................................23

Loop Controller Status Screens ....................................23

Loop Controller Setpoints .............................................27

Loop Controller Setpoint Menu.....................................................................................27

Notes:............................................................................. 32

Programming

WattMaster WHP Section 3

LCD/Keypad Operations

Main Screen

Heat Pump v1.xx

Tuesday Operations 04/13/04 09:15 AM Outdoor Air 58.7°F

The Water Source Heat Pump System Manager i s the operator’s interface to the status and setpoints of any WattMaster Water Source Heat Pump (WHP) component on your communications loop. With the System Manager, you can view any temperature or output condition and change any setpoint to fine tune the operations of the total system. All keypad operations are simple and straight-forward, utilizing non-cryptic plain English messages. The System Manager automatically detects the type of unit that has been selected, and displays the appropriate status and setpoint screens. The attractive plastic case of the System Manager allows for placement in any area of your building.

The remainder of this document will lead the user through the system menus and keypad operation.

All user functions are accessed by pressing the Menu button. Once the button is pressed, the Main User Menu is displayed.

Programming 3-1

Section 3 WattMaster WHP

System Manager Layout

Heat Pump v2.11

Wednesday Operations

7/21/04 04:35 PM

Outdoor Air 85.6

Keypad Functions

The System Manager keypad is labeled either numerically or as to actual function for that key. Below is a summary of the labeled keys and their functions.

ESC

CLEAR

ENTER

DEC

MINUS

UP/DOWN

Arrows

LEFT/RIGHT

Arrows

This key is used to gain access to the first menu, and the user will be notified, on the LCD, if any subsequent use of the key will be required for further access. The ESCape key allows the user to abort what they are doing or exit back to previous menus. Also, anytime you want to leave the system unattended you should press the ESC key until the Main Screen appears. If you make a mistake while entering setpoint data, you can clear the bad data from the display by pressing the Clear key. Use the Enter key to close out a data entry. It can also be used to advance to the next field or screen. If entering a setpoint that requires a decimal point, press this key where the decimal is located while entering the value. If you need to enter a negative value, you must press the Minus key before entering the digits for that value. Use these keys to step forward or backward through Status Screens or Setpoint Data Fields. If the screen prompts you to use these keys, it is used normally to toggle modes of operation.

3-2 Programming

WattMaster WHP Section 3

System Manager LED Indicators

There are two LED indicators located on the right hand side of the System Manager.

The top LED indicates an Alarm condition if the Manager detects an alarm condition while polling the system.

The bottom LED is active during actual communications or packet transfers. This LED will normally “flicker” and not remain on constantly.

Main User Menu

1) View Status Only

2) View Alarms MENU) Setpoints ESC) Main Screen

1) View Status Only For quick access to an individual heat pump or the loop controller, select this menu item. No passcode is required to access the status of any unit installed on your system.

2) View Alarms If the System Manager has been configured for Alarm Polling, the user can select this item to get a list of unit addresses that are currently in alarm. If an alarm exists, the Alarm LED will be active on the right side of the panel.

MENU) Setpoints If you are a Level 2 user, all system

setpoints are available to you. These setpoints are accessed via this Menu button.

ESC) Main Screen When you have finished viewing

the system you can exit this menu and return to the Main Screen by pressing the ESC button.

Programming 3-3

Section 3 WattMaster WHP

Heat Pump Status Screens

View Status Only

Status Only View [ Enter Unit ID# ] Selected Unit: 101

By selecting the View Status Only menu item, you can access any heat pump or the loop controller and read all available temperatures, outputs, and operating conditions for the selected unit. No passcode is required to access these status screens, and no setpoints are available to the user from these screens. To access a unit, enter the Unit ID you wish to view. The Unit ID is actually two separate numbers, combined into one value. The first part of the number contains the Loop Address at which the zone is located. The second part of the number contains the actual Board Address.

EXAMPLE: You would like to view the 3rd heat pump

on the 5th loop. Enter 503 as the Unit ID You would like to view the 12th heat pump

on the 24th loop. Enter 2412 as the Unit ID

3-4 Programming

WattMaster WHP Section 3

If you selected menu item #1 View Status Only and you entered the Unit ID of an installed WHP Controller, the following Status Screens are available.

Status Screen #1

WSHPRV 1 V2.03 Space Temp.:xxx.x°F CSP xx.x° HSP xx.x Slide Adjust: x.x°F

Line 2 Line 3 -

Current Zone Temperature Current Cooling Setpoint ( CSP ) and Heating

Setpoint ( HSP )

Status Screen #2

WSHPRV 1 V2.03 Supply Air.:xxx.x°F Water Temp.:xxx.x°F Outdoor Air:xxx.x°F

Line 4 -

Line 2 Line 3 -

Line 4 -

Effect of optional Sensor Slide Adjustment on the current operating setpoints.

Current Supply Air Temperature Current Leaving Water Temperature if Sensor is

installed. Current Outdoor Air Temperature.

Programming 3-5

Section 3 WattMaster WHP

Status Screen #3

WSHPRV 1 V2.03 Occupied Mode Fan Status...: ON Operations Enabled

Status Screen #4

Line 2 -

Line 3 -

Line 4 -

Current Operating Status

Unoccupied Mode Occupied Mode Pushbutton Override Forced Occupied Forced Unoccupied Forced Fan Only Mode

Current Fan Status

Fan Start Delay! ON OFF

Current Enable Status from Loop Controller

Operations Disabled Operations Enabled

WSHPRV 1 V2.03 Compressor...: ON Reverse Valve: OFF Aux / Stage#2: OFF

Status Screen #5

WSHPRV 1 V2.03

Cooling Mode

Line 2 Line 3 Line 4 -

Line 2 -

Line 3 Line 4 -

Current Compressor ON/OFF Status Current Reversing Valve ON/OFF Status Current Status of Relay #5. Operation

depends on how the user configures this output.

Current HVAC Operating Mode

Neutral Mode Cooling Mode Heating Mode

Reserved for future option. Reserved for future option.

3-6 Programming

WattMaster WHP Section 3

Status Screen #6

WSHPRV 1 V2.03 Space Temp Sensor OK Filter OK Cooling Failure

Line 2 -

Bad Space Sensor Hi Space Temp Alarm! Lo Space Temp Alarm! Space Temp Sensor OK

Line 3 -

Dirty Filter Alarm Filter OK

Line 4 -

Cooling Failure! Heating Failure!

Note: If no alarms exist, then the screen displays the message shown for No Alarms!

If ANY alarm exists then the three lines display one of the messages shown above.

The Cooling Failure and Heating Failure alarms are generated as follows:

As the unit enters the cooling mode, the current Supply Air Temperature reading is stored in memory. After 10 minutes, if the temperature hasn’t changed by 5°F a Cooling Failure alarm is generated.

A Heating Failure is generated in the same manner, only during the heating mode instead of the cooling mode.

The Hi Space Temp and Lo Space Temp Alarms are generated as follows:

If the space temperature gets 5°F above the cooling setpoint, a Hi Space Temp Alarm is generated. If the space temperature gets 5°F below the heating setpoint, a Lo Space Temp Alarm is generated.

Programming 3-7

Section 3 WattMaster WHP

View Alarms

Alarm Address Locations

SYSTEM ALARM STATUS Alarm @ Unit ID 118

Alarm Clearing

SYSTEM ALARM STATUS Clear Alarms? YES To Change Response Use Left/Right Arrow

The System Manager can be programmed to poll all the units on your heat pump system for alarm information. This allows the centrally located System Manager to display an Alarm Indicator whenever an alarm condition exists anywhere on your system. The actual alarms are not displayed on this screen, only the Unit ID where the alarm is located. The example screen shows that a unit at location 118 has experienced an alarm condition. This alarm may or may not be current, as the System Manager latches the condition. This makes it possible to determine if any intermittent alarm conditions have occured. To find out what the alarm is, if it is still current, access the status screens for the Unit IDs that are displayed on the SYSTEM ALARM STATUS screens.

If all the alarm conditions have been corrected at the individual units, you can clear these alarms from the System Manager on the following screen. Use the Left/Right arrow keys to select the YES/NO response desired. If you clear the alarms, but some still exist, the System Manager will show an alarm indication, when the affected unit is polled again.

3-8 Programming

WattMaster WHP Section 3

Menu Setpoints

Full Setpoint Access

1) Set Time & Date

2) Access Units

3) New Passcodes

4) Rebuild Alarm Map

If you selected the Menu key from the first menu screen you can access all setpoints available from any unit on your system. You must be a Level 2 user to access these setpoints. If you haven’t already been asked to enter the passcode, you will be asked before the Full Setpoint Access menu is displayed. This prevents the casual user from being able to affect the operation of your heat pump system.

Set Time & Date

The System Manager has its own built in Real Time Clock. It broadcasts this time once a day, at midnight, to synchronize all of the WHPs on your system. Although the times are displayed on the Main Screen in a standard 12-hour format, they are programmed using the 24-hour Military format. Once the time has been entered, it is also broadcast immediately to all other units on the system. That means that you only need to program the System Manager time to set the Real Time Clocks for all units on your system. In order for the System Manager to broadcast the time and date to all controllers, they must be powered up and communicating.

Programming Time

Program Time/Date Day (Sunday=0): 1 Enter Hr. (0-23): 9 Enter Minutes : 53

Programming 3-9

Day - Enter the Day of the Week (0 to 6) with

Sunday = 0

Hours (Hr) - Enter Hours in 24-Hour Military Format

(1700 = 5:00 PM)

Minutes - Enter the Minutes (0 to 59)

Section 3 WattMaster WHP

Programming Date

Program Time/Date Month (1-12): 4 Day (1-31): 18 Year (00-99): 04

Month - Enter the Month (1 to 12) Day - Enter the Day of the Month (1 to 31) Year - Enter the current Year with 2 digits (00

to 99)

Daylight Savings Adjustments

Daylight Savings Adjustments Enabled

Use Left/Right Arrow

If your area of the country requires Daylight Savings changes, you can enable the System Manager to automatically reset its own clock during the Daylight Savings changeover. If you enable this operation, it knows to changeover the first Sunday in April and then switch back the last Sunday in October. No other programming is required for this function.

Use the Left or Right arrow keys to toggle the second line of the display between Adjustments Enabled and Adjustments Disabled.

3-10 Programming

WattMaster WHP Section 3

New Passcodes

Programming Passcodes

Enter New Passcode

Level 1....: XXXX

Level 2....: XXXX

[Must Be 4 Digits]

The System Manager has two levels of passcode. Level 1 users are limited to viewing Setpoints and Alarms only. Level 2 users have complete system access. Any status or

setpoint field can be read or reset from WHP System Manager. The default passcode is “1111” for level 1 and “2222” for level

2. If you need to change these defaults you can enter any 4 digit number between 1000 and 9999.

If you “forget” the passcode you programmed, you can still access the system with a built in backdoor code. This backdoor code is “9288” and is not programmable. It is not recommended that you give out this backdoor code since it would allow the user access without regard to the standard programmable passcode that most operators should be using.

The actual digits in your passcodes are never displayed. An "X" is used as a place holder for each digit entered. Passcodes must always be four digits in length.

Programming 3-11

Section 3 WattMaster WHP

Rebuild Alarm Map

Rebuilding Screens

Clearing Old Map

....................

................

Build New Map?

(ESC = NO)

Building New Map Loop: 1 Unit: 1 Dec) Go To Next Loop ESC) Abort Process

Alarm Unit Map Built Press Any Key To Continue

If you would like the LED Alarm Indicator to function on the front of your System Manager, you must enable Alarm Polling by building an Alarm Map. This map keeps track of which units exist on your communications loop so the System Manager will poll only those units. That means you will need to rebuild this map anytime units are added or removed from your system. It also means you can disable alarm polling. To do this, disconnect the RS-485 communications plug from the back of your Comm Link II. Then, select the Rebuild Alarm Map menu. The System Manager will not find any units to poll for alarms since none are connected. This is useful during building startup, when you don't want nuisance alarms bothering you.

The screen will display each address it is testing and if a unit is found at that address. If you don't want to wait for the System Manager to check for all 30 loops, you can press the ESC key as soon as the number of loops on your system are exceeded and the test will conclude. All units found up to that point will be saved in memory.

The System Manager does not rebuild this map automatically on powerup! You must do this manually. This

rebuild need only be performed one time, when all units are up and running. It is not a regular requirement. As mentioned above, only when the number of units connected changes should the alarm map be rebuilt.

3-12 Programming

WattMaster WHP Section 3

Heat Pump Setpoints

Heat Pump Setpoint Menu

1) WHP Setpoints

2) WHP Schedules

3) Reset Pumps ESC) To Exit

From the main menu screen select MENU on the keypad, select MENU again for Setpoints. Then select “Access Unit s” (keypad #2) and finally enter the loop and zone number for the desired unit.

s the screen above shows, there are three areas programming available for each WHP Controller. Menu item #1 accesses all the standard temperature and configuration settings for the heat pump. Menu item #2 accesses the week schedule and holiday programming for the individual unit. Menu item #3 can be selected to force the heat pump to manually reset in the case of an operating problem.

1) WHP Setpoints

Setpoint Screen #1

WHP #1 Setpoints Occupied Setpoints Cooling Setpt: xx°F Heating Setpt: xx°F

The Occupied Heating and Cooling Setpoints are programmed on this screen. The setpoints must be at least one degree apart. If you try to enter the same value or to cross the cooling and heating setpoints, the value you enter will not be accepted.

Minimum Default Maximum

Cooling Setpt 50°F74°F90°F Heating Setpt 50°F72°F90°F

Programming 3-13

Section 3 WattMaster WHP

Setpoint Screen #2

WHP #1 Setpoints Unoccupied Setpoints Cool Setup.: xx°F Heat SetBk.: xx°F

The Unoccupied Heating and Cooling Setbacks are programmed on this screen. The Cooling SetUp is added to the Occupied Cooling Setpt to create the Unoccupied Cooling Setpoint. The Heating SetBack is added to the Occupied Heating Setpt to create the Unoccupied Heating Setpt.

Cool SetUp 1°F10°F30°F Heat SetBack -1°F-10°F-30°F

Setpoint Screen #3

WHP #1 Setpoints Slide Effect: x°F SP Deadband.: xx°F OV Duration.:x.x Hr

If the Space Temperature Sensor has the optional slide adjustment, then the Slide Effect is the maximum amount of change that it can have on the Heating and Cooling Setpoint and it is programmed here.

The SP Deadband is divided in half across the current heating and cooling setpoint, and is used in staging the heating and cooling on or off.

Minimum Default Maximum

If you have an override pushbutton on the space sensor, the OV Duration is the length of time the unit will be in the occupied

mode after pushing the button

Slide Effect 0°F3°F5°F SP Deadband 0°F1°F20°F OV Duration 0.0 Hr 1.0 Hr 8.0 Hr

Setpoint Screen #4

WHP #1 Setpoints Cooling Stages: x Heating Stages: x

If the Heat Pump is configured to operate with a Reversing Valve, relay #5 can be configured as a second stage for either heating or cooling or both. If the Heat Pump is configured for individual heating and cooling, this determines how many of each stage there are.

Cooling Stages 0 1 2 Heating Stages 0 1 2

Minimum Default Maximum

3-14 Programming

WattMaster WHP Section 3

Setpoint Screen #5

WHP #1 Setpoints Min Run Time: x Min Min Off Time: x Min Min Cycle...:xx Min

The Min Run Time determines how long the compressor must remain on once it has been activated. The Min Off Time determines how long the compressor must remain off once it is de-activated. The Min Cycle time determines how many times per hour the compressor can be started. If you entered 10 minutes, the compressor could start a maximum of 6 times in a one hour period.

Min Run Time 0 Min 1 Min 20 Min Min Off Time 0 Min 6 Min 20 Min Min Cycle 0 Min 12 Min 60 Min

Setpoint Screen #6

WHP #1 Setpoints Changeover Delay Between Heat/Cool

Modes......:xx Min.

To prevent rapid cycling between heating and cooling modes, you can enter a time period that must be satisfied before the changeover can occur.

Minimum Default Maximum

Changeover Delay 1 Min 30 Min 60 Min

Setpoint Screen #7

WHP #1 Setpoints Enable Signal Select NO ENABLE REQUIRED Use Left/Right Arrow

Normally you would want to have an Enable Signal that gave assurance of water flow before you activate the heat pumps compressor. If you need to operate without this enable signal, use the arrow keys to select the NO ENABLE REQUIRED message. Otherwise, select the LOOP FLOW REQUIRED message so that the signal must be present for the comp ressor to run.

Minimum Default Maximum

Programming 3-15

Section 3 WattMaster WHP

Setpoint Screen #8

WHP #1 Setpoints WHP Configuration R/VALVE & COMPRESSOR Use Left/Right Arrow

If your heat pump uses a reversing valve to determine the heating or cooling mode of operation, select the message R/VALVE & COMPRESSOR. If you are controlling separate stages of heating and cooling select the INDIVIDUAL STAGING message.

Setpoint Screen #9

WHP #1 Setpoints Reversing Valve Used During: COOLING MODE Use Left/Right Arrow

If you have configured the system to use the reversing valve, you must select which mode requires it to be active. Select either the COOLING MODE or the HEATING MODE message.

Setpoint Screen #10

WHP #1 Setpoints Reverse Valve Mode CYCLES w/COMPRESSOR Use Left/Right Arrow

If you have configured the system to use the reversing valve, you can also set it to cycle on and off with the compressor, (CYCLES w/COMPRESSOR) or, to remain on once it is activated, and stay on until the opposite mode or unoccupied mode is selected (RUNS CONTINUOUS MODE). The valve always activates 10 seconds before the compressor starts no matter which method you select.

3-16 Programming

WattMaster WHP Section 3

Setpoint Screen #11

WHP #1 Setpoints Relay5 Configuration AUXILIARY RELAY MODE Use Left/Right Arrow

If your system is configured to use the reversing valve and you only have one stage of heating and cooling, that last relay becomes available for other uses. The AUXILIARY RELAY MODE can be used to operate the relay manually from the Prism computer front end program. If you select ISOLATION VALVE MODE, the relay activates anytime the compressor is called for or whenever the Loop Controller sends an override command to activate and reduce loop pressure.

If the relay needs to follow an external week schedule, select the AUXILIARY RELAY MODE and then see the Aux Relay #5 Schedule assignment screen.

Setpoint Screen #12

WHP #1 Setpoints Fan Mode of Op RUNS CONTINUOUS MODE Use Left/Right Arrow

You can program the fan to run continuously during the occupied mode, (RUNS CONTINUOUS MODE) or you can program it to cycle on and off with the compressor during both the occupied and the unoccupied mode of operation. (CYCLES W/COMPRESSOR)

Setpoint Screen #13

WHP 1# Setpoints Aux Relay #5 Uses Uses Schedule #: x

0) None 1-7) Clock

If you configured relay #5 as an Auxiliary Relay, you can also program it to follow an external schedule command. You must have an OSS Optimal Start Scheduler installed somewhere on you communications loop to provide the external schedule you select here.

Programming 3-17

Section 3 WattMaster WHP

Setpoint Screen #14

WHP #1 Setpoints Heat Pump Scheduling Uses Schedule #: x

0) Int. 1-7) Clock

The Heat Pump Controller can use the internal time clock for a setting an occupied schedule, for this the setpoint will be 0. It can also be programmed to follow an external schedule command. You must have an OSS Optimal Start Scheduler installed somewhere on you communications loop to provide the external schedule, and you select the schedule number here.

Setpoint Screen #15

WHP Setpoints Startup Delay Period x Seconds Times Board Address Switch

If you entered the same starting time for several heat pumps, they are prevented from all starting their fans at the same time by a Startup Delay Period that is determined by their address switch setting. The address is multiplied by the number of seconds you enter on this screen, up to a maximum of 60 seconds per address. This is the time period the fan must wait before it starts when the schedule goes occupied. If you entered 5 seconds and the address was 10 then the fan would start 5 x 10 or 50 seconds after the schedule goes occupied.

Setpoint Screen #16

WHP Setpoints Energy Demand Limits Max Effect: xx°F

3-18 Programming

An Energy Demand Limit sequence is programmed into all heat pump controllers. It is currently an option that is not supported by a controller that can send the Demand Limit signal to initiate a limiting condition. It is included here for

future use only.

Minimum Default Maximum

Max Effect 0°F3°F30°F

WattMaster WHP Section 3

the Status screen.

Setpoint Screen #17

WHP # 1 Setpoints Heat Stage #2 SAT Lockout: 60°F

This setpoint is to shut the heating off when the supply air temperature is too warm. When the supply air temperature is above this setpoint, it will prevent the second stage of heat from coming on.

Minimum Default Maximum

Max Effect 30°F60°F 200°F

Setpoint Screen #18

SENSOR CALIBRATION SPC xxx.x° xxxx.x SAT xxx.x°° xxxx.x WAT xxx.x°° xxxx.x

°° °°

The Thermister Type III Sensor readings can be calibrated.

°°

Enter Positive values to increase the reading or Negative values to decrease the reading. If no sensor is attached, the calibration offset will still allow a value to be input and read for diagnostic purposes.

Space Sensor SPC -100.0°F 0.0°F +100.0°F Supply Air Sensor SAT -100.0°F 0.0°F +100.0°F Water Sensor WAT -100.0°F 0.0°F +100.0°F

Setpoint Screen #19

WHP #1 Setpoints Alarms: Enabled

Use Left/Right Arrow

Select if you want the notification LED on the front of the System manager to illuminate when an alarm occurs. If Enabled is selected, any WHP alarm will cause the Alarm LED on the front panel to light up. If Disable is selected, the Alarm LED will not light up but the alarm will still show up in

Minimum Default Maximum

Note: You must do a Rebuild Alarm Map after all controllers are powered up and

communicating.

Programming 3-19

Section 3 WattMaster WHP

2) WHP Schedules

The Water Source Heat Pump controllers contain their own built in scheduling capability for calculating Occupied/Unoccupied periods. Select item #2 from Schedules menu to access the following schedule programming menu.

Schedule Menu

WSHP Schedules

1) Week Schedules

2) Holidays MENU) Previous Menu

Week Schedule Programming

Event #1

WEEK SCHEDULES Sunday Event #1 Start Time..: xxxx Stop Time..: xxxx

Event #2

WEEK SCHEDULES Sunday Event #2 Start Time..: xxxx Stop Time..: xxxx

There are two Start / Stop events available per day. The first line is the start time for event #1 and the next line is the stop time for event #1.

The screens will step through the Start Time and then the Stop Time for each day of the week. You can quit at any point in the process by pressing the "ESC" key.

If no second event is required, simply leave a ZERO for both the start and stop times on the event #2 screens.

All times are in 24-hour format, so 5:00 PM would be entered as 1700.

If both the Start and Stop Times are ZERO, the schedule is in a Continuous OFF mode.

If both the Start and Stop Times are 2359, the schedule is in a Continuous ON mode.

3-20 Programming

WattMaster WHP Section 3

Holidays

Holiday Day Selection

There are 14 Holiday periods available, organized as a Start Day / Stop Day event. If the Holiday only lasts one day, enter the same date for the Start & Stop days. There is no limit to the duration or number of days that can be included in one holiday, other than it cannot extend past December 31st. If you have a holiday that crosses the end of year border, you will need to use two holiday periods to accomplish this event.

Program Holidays Holiday # 1 Start Mon/Day: xxxx (EX: 101 = Jan. 1)

Program Holidays Holiday # 1 Stop Mon/Day: xxxx (EX: 102 = Jan. 2)

The screens will step through the 14 possible holidays, one at a time. Line 2 shows which holiday is currently being programmed.

Line 3 shows which event, the Start Day or Stop Day, is currently being programmed.

Remember to combine the month and day into a single four digit value.

EXAMPLE: 0704 = July 4th

Holiday Start / Stop Times

WHP CONTROLLER Holiday Schedule Start Event #1..: xxxx Stop Event #1..: xxxx

The 14 holidays all use the same Holiday Start / Stop time. The start/stop times are programmed back on the Week Schedule screens. The holiday schedule screen appears after the Saturday schedule screen, as you are stepping through the days of the week.

1225 = December 25th

Note: Normally there is no schedule in the Loop Controller device. It simply looks at

all the Water Source Heat Pumps for a request to run signal. Scheduling is maintained separately in each Water Source Heat Pump. If you want to be able to schedule all Water Source Heat Pumps on and off at the same time, you can input a schedule on the Loop Controller and it will broadcast that schedule to all WHPs.

Programming 3-21

Section 3 WattMaster WHP

3) Reset Pumps

WSHPRV 1 v2.03 Tripped Pump Reset Reset Mode: Disabled Use Left/Right Arrow

If one of your heat pumps has tripped off, it can be manually reset from the following screen. You will have entered the Unit ID to access the WHP Menu screen, so that is the unit that will receive this reset command. If you don’t want to send the command, select the Disabled message with the arrow keys. If you do want to send the command, select the Enabled message with the arrow keys and then press the

nter button. This command will automatically clear itse

when the WHP detects it and performs the reset.

There are two methods of resetting:

1. Relay #4, on the WHP will activate with the reset

command and can be wired to provide the reset action.

2. The compressor relay will be cycled off. On

newer heat pumps, this is all that is required to reset the operation.

3-22 Programming

WattMaster WHP Section 3

Loop Controller Status

Loop Controller Status Menu

1) View Status Only

2) View Alarms Menu) Setpoints ESC) To Exit

From the main menu screen select MENU on the keypad. Then select “View Status Only” (keypad #1) and finally enter the loop and zone number for the desired unit.

As the screen above shows, there are two areas of status available for the Loop Controller. Menu item #1 accesses all the status screens for the Loop Controller. Menu item #2 accesses the alarms for the Loop Controller. “Menu” can be selected to access the Setpoints screens.

Loop Controller Status Screens

If you selected menu item #1, View Status Only, and you entered the Unit ID of the Loop Controller, the following Status Screens are available.

Status Screen #1

Loop Control v1.06 OCCUPIED Return Temp: xx.x°F Supply Temp: xx.x°F

Line 2 -

Line 3 Line 4 -

Current operating Mode:

OCCUPIED UNOCCUPIED

Current Return Water Temperature Current Supply Water Temperature

Programming 3-23

Section 3 WattMaster WHP

Status Screen #2

Loop Control v1.06 No Call to Run Water Flow Proved! LOOP ENABLED

Status Screen #3

Loop Control v1.06 LEAD Pump #1: ON STANDBY Pump #2: OFF

Line 2 -

Line 3 -

Line 4 -

Line 2 Line 3 -

Current operating Mode:

No Call To Run ACTIVE CALL TO RUN

FREEZE PROTECTION!

Current Water Flow Status:

Water Flow Proved! No Flow Detected

Current Request to Operate Status:

LOOP ENABLED LOOP DISABLED

LEAD Pump #1 On or Off STANDBY Pump #2 On or Off

Status Screen #4

Cool Stage # 1.: OFF Cool Stage # 2.: OFF Cool Stage # 3.: OFF Cool Stage # 4.: OFF

Line 1 Line 2 -

Line 3 Line 4 -

3-24 Programming

Cool/Heat Stage #1 On/Off Cool/Heat Stage #2 On/Off

Cool/Heat Stage #3 On/Off Cool /Heat Stage #4 On/Off

WattMaster WHP Section 3

Status Screen #5

Cool Stage # 5.: OFF Cool Stage # 6.: OFF Cool Stage # 7.: OFF Cool Stage # 8.: OFF

Status Screen #6

Loop Control v1.06 Pressure.: xxx.x PSI Pump VFD.: xx.x VDC Heat VFD.: xx.x VDC

Line 1 Line 2 -

Line 3 Line 4 -

Line 2 Line 3 Line 4 -

Cool/Heat Stage #5 On/Off Cool/Heat Stage #6 On/Off

Cool/Heat Stage #7 On/Off Cool/Heat Stage #8 On/Off

Current Loop Water Pressure Current Variable Speed Pump Voltage Signal Current Proportional Heat Voltage Signal

Note: If none of the above options have been configured, then the values in this status

screen will be 0.

Programming 3-25

Section 3 WattMaster WHP

Status Screen #7

Loop Control v1.06

No Alarms!

Line 2 Line 3 -

Pump Failure or Blank Line Hi Control Water Temp

Lo Control Water Temp

Line 4 -

Fire/Smoke Alarm Phase Shutdown

Note: If no alarms exist, then the screen displays the message shown for No Alarms! If

ANY alarm exists, then the three lines display one of the messages shown above.

The Fire/Smoke Alarm is generated as follows:

If the NC (normally closed) contact from a firestat or smoke detector th at is wired between GND and AIN1, on the Analog Input expansion board, opens, the Fire/Smoke Alarm is generated.

The Phase Shutdown Alarm is generated as follows:

If the NO (normally open) contact from a phase monitoring device, that is wired between GND and AIN7 is made, the Phase Shutdown Alarm is generated.

Status Screen #8

Loop Control v1.06 Pump Run Times #1: xxxxx Hrs xx Min #2: xxxxx Hrs xx Min

3-26 Programming

Line 2 Line 3 Line 4 -

Message Only Pump #1 Hours and Minutes Run Time Pump #2 Hours and Minutes Run Time

WattMaster WHP Section 3

Loop Controller Setpoints

Loop Controller Setpoint Menu

1) LC Setpoints

2) LC Schedules

3) LC Force Modes ESC) To Exit

Setpoint Screen #1

WHP Loop Setpoints HEAT REJECTION

Setpoint......: xx°F

Stage Deadband: xx°F

If the controlling water temperature rises above this Setpoint, the Heat Rejection or Cooling Stages begin to stage on. As the temperature continues to rise above the Setpoint by the Deadband amount, an additional stage is added. Each additional stage can only activate if the temperature rises above the Setpoint by the number of active stages times the deadband value.

Example: There are 2 stages on, a 3° deadband and the setpoint is 79° 2 x 3° + 79° = 85° before stage 3 can activate

Setpoint 50°F79°F99°F Stage Deadband 1°F3°F10°F

Setpoint Screen #2

WHP Loop Setpoints HEAT REJECTION Stage Delay...: x M

The Staging Delay period must also be satisfied before an additional stage of cooling or heat rejection can be activated. The maximum number of heat rejection stages are programmed on this screen also.

Minimum Default Maximum

Stage Delay 1 Minute 1 Minute 60 Minutes

Programming 3-27

Section 3 WattMaster WHP

Setpoint Screen #3

WHP Loop Setpoints HEATING ADDITION

Setpoint......: xx°F

Stage Deadband: xx°F

If the controlling water temperature drops below this Setpoint, the Heat Addition or Boilers begin to stage on. As the temperature continues to drop below the Setpoint by the Deadband amount, an additional stage is added. Each additional stage can only activate if the temperature drops below the Setpoint by the number of active stages times the deadband value.

Example: There are 2 stages on, a 3° deadband and the setpoint is 79° 79° - 2 x 3° = 73° before stage 3 can activate

Setpoint 50°F76°F99°F Stage Deadband 1°F3°F10°F

Setpoint Screen #4

Minimum Default Maximum

WHP Loop Setpoints HEATING ADDITION Stage Delay...: x M

The Staging Delay period must also be satisfied before an additional boiler or heat addition stage can be activated. The maximum number of heat addition stages are programmed on this screen also.

Stage Delay 1 Minute 1 Minute 60 Minutes

Setpoint Screen #5

WHP Loop Setpoints OA FREEZE PROTECTION

Setpoint.....: xx°F

If the outdoor air temperature drops below this setpoint, the pump will be energized to prevent the water lines from freezing.

Setpoint

Minimum Default Maximum

-50°F40°F50°F

3-28 Programming

WattMaster WHP Section 3

Setpoint Screen #6

WHP Loop Setpoints Water Hi Limit: xx Water Lo Limit: xx Alarm Delay...: xM

° °

If the controlling water temperature rises above the Water Hi Limit setpoint, all heat addition will be removed and one

stage of heat rejection will be activated. If the controlling water temperature drops below the Water Lo Limit setpoint, all heat rejection stages will be removed and one heat addition stage will be activated. An alarm will be generated if it remains out of limits for the Alarm Delay Time.

Setpoint Screen #7

WHP Loop Setpoints Pump Speed: CONSTANT Flow Proof: CONTACT Use Left/Right Arrow

The Loop Controller can modulate a Variable Speed Pump. Select the PRESSURE option in place of th e CONSTANT option for variable speed pumping. The water flow proving can be accomplished by a differential pressure contact closure or an actual pressure sensor. If you select Variable Speed Pumping, you must select the PRESSURE option in place of the CONTACT option for Flow Proof.

Minimum Default Maximum

Water Hi Limit 0°F 120°F 120°F Water Lo Limit 0°F0°F 120°F Alarm Delay 0 Min 30 Min 120 Min

Setpoint Screen #8

WHP Loop Setpoints STEP HEATING CONTROL RETURN WATER CONTROL Use Left/Right Arrow

Programming 3-29

There are two methods of Heat Addition control, STEP HEATING CONTROL or PROPORTIONAL HEATING

The Loop Controller can be configured to maintain Return Water Temperature ( RETURN WATER CONTROL ) or the Supply Water Temperature ( SUPPLY WATER CONTROL )

Section 3 WattMaster WHP

Setpoint Screen #9

WHP Loop Setpoints Lead/Lag Changeover Switch After xxx Hrs

The two pumps will switch after this programmed amount of time so that each pump accumulates roughly the same number of run time hours. If a pump is currently running and this time period is exceeded, the changeover will occur as soon as pump run time exceeds the setpoint. The current pump will shut off and the standby pump will start at the same time.

Minimum Default Maximum

Changeover 1 Hour 40 Hours 240 Hours

Setpoint Screen #10

WHP Loop Setpoints Water Loop Proof Of Flow Pr. SP: xxx PSI

If you attached a Pressure Sensor for proof of flow instead of a differential pressure contact closure for proof of flow, the controlling pressure is programmed on this screen. This Setpoint represents the amount of pressure that you set to prove water flow exists in the system. Otherwise, this screen will not appear.

Flow PR. SP 0 5 PSI 50 PSI

Setpoint Screen #11

WHP Loop Setpoints Pressure SP: xxx PSI SP Deadband: xx PSI Adjust Time: x.x Sec

If you configured the system for Variable Speed Pumping with a Pressure Sensor for proof of flow, the controlling pressure, deadband and control adjust time period are programmed on this screen. Otherwise, this screen will not appear.

Minimum Default Maximum

Pressure SP 1 PSI 40 PSI 50 PSI SP Deadband 1 PSI 2 PSI 50 PSI Adjust Time 0.1 Seconds 1.0 Seconds 25 Seconds

3-30 Programming

WattMaster WHP Section 3

Setpoint Screen #12

WHP Loop Setpoints Isolation Valves Set Open if PSI is Above Hi Limit...: xxx PSI

If you configured the system for Variable Speed Pumping with a Pressure Sensor for proof of flow, the Loop Controller can send a signal to all the Heat Pumps to open their Isolation Valves whenever a Hi Limit Pressure is exceeded. If the Heat Pumps do not control an Isolation Valve, then the only reaction is to reduce the variable speed pump voltage signal.

Minimum Default Maximum

Hi Limit 1 PSI 50 PSI 50 PSI

Setpoint Screens #13

SENSOR CALIBRATION RWT xxx.x° xxxx.x SWT xxx.x°° xxxx.x OAT xxx.x°° xxxx.x

The Thermister Type III Sensor readings can be calibrated.

°°

Enter a Positive value to increase the reading or a Negative

°° °°

value to decrease the reading. If no sensor is attached, the calibration offset will still allow a value to be input and read for diagnostic purposes.

Minimum Default Maximum

Return Water RWT -10.0°F 0.0°F +10.0°F Supply Water SWT -10.0°F 0.0°F +10.0°F Outdoor Air OAT -10.0°F 0.0°F +10.0°F

Note: Due to memory limitations in the Loop Controller, the maximum amount of

calibration offset is 10.0°F.

Setpoint Screen #14

WHP Loop Setpoints

Alarms: Enabled

Use Left/Right Arrow

Alarms can be configured to light the LED on the front of the System Manager by setting Alarms to Enabled, if you do not wish to report alarms, select Disabled.

Setpoint Screen #15

WHP Loop Setpoints Relay Configurations Rly 1: ADDITION Use Left/Right Arrow

Use this screen to configure the relays on the expansion board for heat ADDITION, REJECTION or NOT USED. All 8 relays come up one at a time.

Programming 3-31

Section 3 WattMaster WHP

Notes:

3-32 Programming

Section 4

Table of Contents

1.0 Communications Overview........................................ 1

1.1 How It Works...........................................................................................................1

1.2 WattMaster WHP System........................................................................................1

2.0 WHP Controller Overview .......................................... 4

2.1 How It Works...........................................................................................................4

2.1.1 Initialization.....................................................................................................4

2.1.2 Operating Summary.........................................................................................4

2.2 Becoming Familiar with the WHP Controller .........................................................5

2.2.1 24 VAC Power Connector...............................................................................5

2.2.2 Analog Inputs...................................................................................................6

2.2.3 Analog Output Description..............................................................................6

2.2.4 Relay Output Descriptions...............................................................................6

2.2.5 RS-485 Communications Connector...............................................................7

2.2.6 WHP Controller Wiring...................................................................................8

3.0 Loop Controller Overview......................................... 9

3.1 How It Works...........................................................................................................9

3.1.1 Initialization.....................................................................................................9

3.1.2 Operating Summary.........................................................................................9

3.2 Loop Controller Inputs & Outputs.........................................................................10

3.2.1 Analog Inputs.................................................................................................10

3.2.2 Analog Output................................................................................................10

3.2.3 Binary Output.................................................................................................11

3.2.4 Relay Expansion Board - Outputs..................................................................11

3.2.5 Analog Input Expansion Board......................................................................11

3.2.6 Comm Connector - Communications............................................................12

3.2.7 Power Terminal..............................................................................................12

4.0 Start-Up.................................................................... 14

4.1 Blink Codes for WHP Controllers.........................................................................14

4.2 Blink Codes for Loop Controllers..........................................................................15

4.3 Communications Checklist...................................................................................15

4.4 Installation and Commissioning Information ........................................................16

4.5 Setting Address Switches.......................................................................................19

4.5.1 Setting the MiniLink Address Switch............................................................19

4.5.2 Loop Controller Addressing...........................................................................20

4.5.3 WHP Controller Addressing..........................................................................20

Start-Up and Troubleshooting

Section 4

5.0 Troubleshooting ...................................................... 21

5.1 General Troubleshooting........................................................................................21

5.1.1 Communications Troubleshooting Checklist.................................................21

5.1.2 General Troubleshooting Checklist ...............................................................22

5.2 Alarms......................................................................................................................23

5.3 Checking Comm. Loop Voltages.............................................................................24

5.3.1 Checking the CommLink II Network Loop...................................................24

5.3.2 Checking the Comm Loop at the CommLink II ............................................25

5.3.3 Checking the CommLink II Driver................................................................26

5.3.4 Checking the MiniLink Network Loop..........................................................27

5.3.5 Checking the MiniLink Network Driver........................................................28

5.3.6 Checking the MiniLink Local Loop...............................................................29

5.3.7 Checking the Local Loop at MiniLink...........................................................30

5.3.8 Checking the MiniLink Local Loop Driver...................................................32

5.3.9 Checking the Local Loop at a WHP Controller.............................................33

5.3.10 Checking WHP Controller Driver Chip.........................................................34

5.4 Troubleshooting Loop Controller ..........................................................................35

5.4.1 Checking the Loop Controller Analog Inputs................................................35

5.4.2 Checking the Loop Controller Outputs..........................................................37

5.4.3 Checking the Local Loop at a WHP Loop Controller....................................38

5.4.4 Checking WHP Loop Controller Driver Chip...............................................39

5.4.5 Comm Driver Chip Replacement...................................................................40

5.5 Temperature Sensor Resistance Chart...................................................................41

5.6 Pressure Sensor Voltage Chart...............................................................................42

Notes: ............................................................................ 43

Table of Figures

Figure 4-1: System Wiring Overview.............................................................................2

Figure 4-2: Communications Loop Routing...................................................................3

Figure 4-3: WHP Controller Component Layout...........................................................5

Figure 4-4: Typical WHP Controller Wiring Diagram...................................................8

Figure 4-5: Loop Controller Inputs & Outputs.............................................................13

Figure 4-6: Diagnostic LED Blink Codes.....................................................................14

Figure 4-7: Diagnostic LED Blink Codes.....................................................................15

Figure 4-8: Communications Loop Wiring ..................................................................18

Figure 4-9: MiniLink Address Switch Setting.............................................................19

Figure 4-10: WHP Controller Address Switch Setting...............................................20

Figure 4-11: Comm Driver Chip Replacement............................................................40

Start-Up and Troubleshooting

WattMaster WHP Section 4

1.0 Communications Overview

Perhaps no other portion of the system seems as difficult to diagnose as the communications loop, yet it really can be quite simple if you understand how it works. In fact, much of the troubleshooting can be done by simple observation. We will lead you through the system functions and then provide you with detailed instructions for checking each piece of equipment.

1.1 How It Works

WattMaster uses a token-passing loop architecture, which means in simple terms that an “electronic message” called a token is passed from controller to controller in a roundrobin fashion. A controller must wait to receive the token before it can send or request any data.

Note: It is very important to know which device is the loop master on the loop

you are troubleshooting.

1.2 WattMaster WHP System

The standard WattMaster WHP system may have only one communications loop or as many as thirty communication loops depending on the number of WHP Controllers to be connected to the system. It is important to remember that each loop must have its own master.

If you are using the multiple loop version of the WHP system (for systems with more than 30 WHP Controllers) a loop is required for each group of 30 WHP Controllers. The WHP Loop Controller may be connected to any of the Local Loops. The Local Loop that has the WHP Loop Controller installed can only have 29 WHP Controllers on that loop. Each Local Loop is connected to a MiniLink loop interface. The MiniLink is always the master on the Local Loops. The MiniLinks are connected to the CommLink II and to each other via the Network Loop.

The CommLink II is always the master on the Network Loop. You must be sure the CommLink II is connected and functioning if you are troubleshooting the communications loops. Make sure the CommLink II is set for multiple loops .

Start-Up and Troubleshooting 4-1

WattMaster WHP Section 4

COMPUTER (OPTIONAL)

RS-485

Comm Loop

32K 8K

COMM

RELAY OUTPUT

Room Sensor

with Optional

Override & Adj.

COM 1-3

SHLD

OUT 1

OUT

RAM EPROM

485

LD4

COMM

OUT 3

REC.

OUT

OUT 4 OUT 5 COM

CPU

4-5

COMM

12V

TEST

ADDRESS ADD

AIN

EWDOG

AIN

5 GND

GND

0-5 VDC

AOUT

PWR

PRESSURE

GND

SENSOR

YS101564

0-1

VDC

24VAC

24 VAC

110/24 VAC

Power Pak

Modem

(Optional)

T R

S D

C D

CommLink II

Multiple Loop

Interface

COMM

LINK

L I

I I

L O

O D

E M

WCLI

MiniLink

Loop # 1

MINILINK

NETWORK

1 2

24VAC24VAC

GND

LOOP

O O

24VAC

MiniLink

Loop # 2

MINILINK

NETWORK

1 2

24VAC

GND

LOOP

O O

24VAC

Typical Network & Local Loop Wiring 2 Conductor Twisted Pair with Shield

MiniLink

Loop # 3

NETWORK

T W

O R

LOOP

O O

(Beldon #82760 or Equivalent)

MINILINK

1 2 4 8 16

24VAC24VAC

GND

24VAC

NOTE: * Only One Outside Air Sensor

is Required per WHP System

MiniLink

Loop # 4

MINILINK

NETWORK

1 2

24VAC

GND

LOOP

O O

Loop # 4

24VAC

Notes:

1.) 24 VAC Must Be Connected So That All Ground Wires Remain Common.

2.) All Wiring To Be In Accordance With Local And National Electrical Codes and Specifications.

110/24 VAC

Power Pak

Network Loop

RS-485

19200 Baud

Local Loop

RS-485

9600 Baud

Local Loop

RS-485

9600 Baud

Local Loop

RS-485

9600 Baud

*OutsideAir

Sensor

Supply

Air

or Leaving Water Temp

Sensor

Typical WHP Controller Wiring

32K 8K

COMM

RELAY OUTPUT

COM 1-3

SHLD

OUT 1

OUT

RAM EPROM

485

LD4

COMM

OUT 3

REC.

OUT

OUT 4 OUT 5 COM

CPU

4-5

COMM

12V

TEST

ADDRESS ADD

AIN 1 AIN 2 AIN 3

EWDOG

AIN 4 AIN 5 GND

GND

0-5

VDC

AOUT

PWR

PRESSURE

GND

SENSOR

YS101564

0-1

VDC

24VAC

System Manager

32K 8K

COMM

RELAY OUTPUT

COM 1-3

SHLD

OUT

OCCUPIED

03/31/04 03:38PM WED

NO ALARMS

OUT

RAM EPROM

485

LD4

COMM

OUT

REC.

OUT

COM

CPU

4-5

COMM

12V

TEST

ADDRESS ADD

AIN

EWDOG

AIN

5 GND

GND

0-5 VDC

AOUT

PWR

PRESSURE

GND

SENSOR

YS101564

0-1 VDC

24VAC

32K 8K

COMM

RELAY OUTPUT

COM 1-3

SHLD

OUT

RAM EPROM

485

LD4

COMM

OUT

REC.

OUT

COM

CPU

4-5

COMM

12V

TEST

ADDRESS ADD

AIN

EWDOG

AIN

5 GND

GND

0-5

VDC

AOUT

PWR

PRESSURE

GND

SENSOR

YS101564

0-1

VDC

24VAC

WHP Loop Controller

C21

CX1

CX2

RN1

CX4

TB1 COMM

LD6

INPUTS

TB3

PRESSURE SENSOR

2 D

SHLD

2 Y L

CX5

COM1-3

3 D

PAL

RS-485

COMM

EPROM

RAM

COMM

LD7

TUC-5RPLUS

PWR

(1MEG)

YS101816REV.2

LD8

YS101790

4RLYIOBD.

LED1

LD9 LED2

COM4-5

Y L R

+VREF

TB2

CX6

5.11V

TESTPOINT

C S P I

EWDOG

RV1

H P

VREFADJ

R28

Y L

ADD

ADDRESS

+VDC

4 N

RN5

NE5090NPB3192

PU1

AIN1

0PS

CX10

PU2

AIN2

TOKEN

PU3

AIN3

NETWORK

0 1

U10

SW1

PU4

AIN4

PU5

AIN5

CX12

1 1

D11

D12

9936

PU7

C10

-5

-1

R13

GND

MC34064A

D14

JP1

SC1

GND

C13

C12

U13

R15

AOUT1

U12

AOUT2

CX14

C14

C16

R19

U14

AIN7

CX13

D15

C17

TB4

GND

U15

C15

D19

PJ1

GND

R22

7 2

R24

R25

C20

CX15

7824CT

R26

24VAC

VR1

EXPANSION

VR2

T'STAT

3.) The Local Loop With The Loop Controller Installed Can Only Have Up To 29 WHP Controllers Attached As The WHP Loop Controller Occupies Address #30.

4.) Systems may consist of up to 20 Local Loops (600 WHP Controllers). Consult factory for systems that exceed these quantities.

COMM

SHLD

LD4

YS101790

4RLYIOBD.

REC.

AIN1 AIN2

AIN3 AIN4

GND

AOUT1

4ANALOGIN MOD I/O BD.

YS101784

12V AIN 1 AIN 2 AIN 3 AIN 4 AIN 5 GND

GND

AOUT

PRESSURE SENSOR

RAM EPROM 485 COMM

CPU

ADDRESS ADD

EWDOG

YS101564

32K 8K

RELAY OUTPUT COM 1-3 OUT 1 OUT 2 OUT

3 OUT

OUT 4 OUT

5 COM 4-5

4-5

COMM

TEST

0-5 VDC

PWR

GND

0-1 VDC

24VAC

See Note #3

Dirty Filter Alarm

Loop #1

WHP

Controllers

Loop #2

WHP

Controllers

Loop #3

WHP

Controllers

Loop #4

WHP

Controllers

Local Loop

RS-485

9600 Baud

#30

32K 8K

COMM

RELAY OUTPUT

COM 1-3

SHLD

OUT

RAM EPROM

485

LD4

COMM

OUT

REC.

OUT

COM

CPU

4-5

COMM

12V

TEST

ADDRESS ADD

AIN 1 AIN 2 AIN 3

EWDOG

AIN 4 AIN 5 GND

GND

0-5

VDC

AOUT

PWR

PRESSURE

GND

SENSOR

YS101564

0-1

VDC

24VAC

#30

32K 8K

COMM

RELAY OUTPUT

COM 1-3

SHLD

OUT 1

OUT

RAM EPROM

485

LD4

COMM

OUT 3

REC.

OUT

OUT 4 OUT 5 COM

CPU

4-5

COMM

12V

TEST

ADDRESS ADD

AIN

EWDOG

AIN

5 GND

GND

0-5 VDC

AOUT

PWR

PRESSURE

GND

SENSOR

YS101564

0-1 VDC

24VAC

#30

32K 8K

COMM

RELAY OUTPUT

COM 1-3

SHLD

OUT 1

OUT

RAM EPROM

485

LD4

COMM

OUT

REC.

OUT

OUT 4 OUT

COM

CPU

4-5

COMM

12V

TEST

ADDRESS ADD

AIN

EWDOG

AIN

5 GND

GND

0-5

VDC

AOUT

PWR

PRESSURE

GND

SENSOR

YS101564

0-1 VDC

24VAC

#29

32K

COMM

RELAY OUTPUT

COM 1-3

SHLD

OUT

RAM EPROM

485

LD4

COMM

OUT

REC.

OUT

OUT 4 OUT 5

COM

CPU

4-5

COMM

12V

TEST

ADDRESS ADD

AIN 1 AIN 2 AIN 3

EWDOG

AIN 4 AIN 5 GND

GND

0-5

VDC

AOUT

PWR

PRESSURE

GND

SENSOR

YS101564

0-1

VDC

24VAC

Figure 4-1:

System Wiring Overview

4-2 Start-Up and Troubleshooting

WattMaster WHP Section 4

STANDA RD WALL MOUNT

120/24 VAC POWER SUPPLY

( MAY ALSO BE POWERED FROM 24VAC )

(NETWORK TERMINALS ONLY)

SYSTEM MANAGER POWER SU PPLY

GND

24VAC

POWER

CPU

2 4 V A C

G N D

V1V2V3

M U8

CX10

CX12

CX14

CX13

INPUTS

+VDC

AIN1

AIN2

AIN3

AIN4

AIN5

RS-485

SHLD

COMM

LED1

LED2

VREF ADJ

TEST POINT

COM1-3

COM4-5

CX15

All communications wiring should be labeled to avoid confusion and to aid future servicing.

03/31/04 03:38PM WED

OCCUPIED

COMPUTER

(OPTIONAL)

NO ALARMS

COMMUNICATIONS

RS-485

SYSTEM MANAGER

SHLD

S101716 REV. 1

COMM LINK II

INTERFACE

(MULTIPLE LOOP)

UNIT COMES WITH

Remote Link

(OPTIONAL)

32K

COMM

T SHLD R

LD4

C21

CX1

RN1

TB1

CX5

LD6

LD7

PWR

LD8

RN3

LD9

+VREF

5.11V

EWDOG

RV1

R28

ADDRESS

RN5

PU1 D6 PU2 D7 PU3 D8 PU4 D9 PU5 D11

C10

PU7

GND

D14

GND

C12

U13

AOUT1 AOUT2 AIN7

D15

C17

GND

PJ1

TB3

C20

R26

PJ2

PRESSURE SENSOR

GND

24VAC

NETWORK

OOP

EXPANSION

CX2

CX3

CX4

RLY1

D2D3D4D5

RLY2RLY3RLY4RLY5

PAL

EPROM

RAM

PHILIPS

ADD

1 2 4 8 16 32 TOKEN NETWORK

SW1

0-5

0-1

VDC

JP1

R15

C14

R19

U15

C15

R22 R24 R25

PJ3

TUC-5R PLUS

(1 MEG)

YS101816 REV. 2

RN2

TB2

CX6

RN4

NE5090NPB3192 0PS

CX8

U10

D10

R10

D13

D12

C11

993

R13

R11

U11 MC34064A

SC1

C13

U12

C16

U14

TB4

D19

GND

R27

D16

D18

D17

POWER

C19

C18

7824CT

24VAC

VR2

VR1

T'STAT

RLY IO BD.

IN1 IN2

IN3

IN4 GND AOUT1

YS101790

ANALOG IN MOD I/O BD.

S101784

REC.

12V

IN 1

AIN

GND GND

OUT

PRESSURE SENSOR

S101564

COMM

T SHLD R

LD4

REC.

12V

IN 1 AIN 2 AIN 3 AIN 4 AIN 5 GND

GND

OUT

PRESSURE

SENSOR

S101564

RELAY

OUTPUT COM 1-3

OUT

RAM EPROM

COMM

DDRESS ADD

EWDOG

0-5

0-1

VDC

RAM EPROM

COMM

DDRESS ADD

EWDOG

0-5

VDC

0-1

VDC

OUT

5 COM 4-5

4-5

COMM

TEST

VDC

PWR

GND

24VAC

32K

RELAY

OUTPUT COM 1-3 OUT

OUT

2 OUT

OUT

5 COM 4-5

4-5

COMM

TEST

PWR

GND

24VAC

TO OTHER WHP CONTROLLERS

Figure 4-2:

TO OTHER MINILINKS

Communications Loop Routing

Start-Up and Troubleshooting 4-3

WattMaster WHP Section 4

2.0 WHP Controller Overview

2.1 How It Works

2.1.1 Initialization

On system powerup the COMM LED remains extinguished for five seconds. After this delay, the COMM LED will blink out the address of the controller (Address Switch Setting). The COMM LED will then extinguish for another five seconds and then begin to blink for a twenty second startup delay. At the conclusion of this twenty second period, the COMM LED will begin blinking a diagnostic code every ten seconds. This code is described later in this document. The duration of a powerup initialization sequence is roughly one minute.

During this initialization period, the controller retrieves all operating setpoints from its non-volatile EEPROM memory and initializes all outputs to an OFF condition.

Note: All future references to the Water Source Heat Pump Controller in this docu-

ment use WHP as the designation.

2.1.2 Operating Summary

At all times, after the conclusion of the initialization sequence, the WHP performs a specific set of operating instructions in the following order: (a - g repeat continuously)

a. Read Analog Inputs for Temperatures and Overrides. b. Check the RS-485 communications port for any new setpoints from the System

Manager and keeps the status updated for the System Manager.

c. If the push-button override is active, it checks the timer to see if the override is

finished.

d. Calculates the current occupied/unoccupied mode from its internal week sched-

uling. e. Calculates what state the output relays and analog output should be set to. f. Updates the diagnostic COMM LED blinking. g. Stores data in the internal trend log if ready for another log.

4-4 Start-Up and Troubleshooting

WattMaster WHP Section 4

EWD

DIAGNOSTIC BLINK

RAM SIZE

24 VAC Common for Inputs 1 - 3

Aux. Heating or Cooling (Cool 2)

24 VAC Common for Inputs 1 - 3

Mounting Backplate

2.2 Becoming Familiar with the WHP Controller

COMMUNICATIONS

DRIVER CHIP

RS-485

COMMUNICATIONS

LOOP

COMMUNICATIONS

LED

ADDRESS SWITCH

( ADDRESS 18 SHOWN )

ANALOG INPUTS

Space Sensor

Slide Adjust

Supply Air Temp

Leaving Water Temp or Dirty Filter

Lockout

STATIC PRESSURE

SENSOR INPUT

COMM

LD4

REC.

SENSOR

T SHLD

12V AIN

AIN

AIN AIN AIN

GND GND

AOUT

PRESSURE

1 2 3

4 5

PIN 1

INDICATION

YS101564

RAM EPROM

485 COMM

ADDRESS ADD

CPU

RAM

0-5

0-1

SELECT JUMPER

EPROM

32K

COMM

TEST

VDC

PAL

RELAY

OUTPUT COM 1-3

OUT

OUT OUT

COM 4-5

4-5

PWR

1 2

GND

4VAC

Fan-On/Off

Rev. Valve-On/Off (Heat 1)

Compressor-On/Off (Heat 2)

Heat Pump Reset (Cool 1)

CODE LED

REAL TIME

CLOCK CHIP

POWER LED

24VAC

POWER

INPUT

Figure 4-3:

WHP Controller Component Layout

2.2.1 24 VAC Power Connector

This connector provides power to the WHP Controller.

24VAC - The “hot” side of the control transformer.

GND - The grounded side of the control tran sformer. If the secondary of the con-

trol transformer is not grounded, you must still observe polarity if the transformer powers any other device!

Warning: Connect only the GND terminal to the grounded side of a transformer

- Failure to properly observe polarity will result in damage to the system. Observe polarity at all points in the

system.

Start-Up and Troubleshooting 4-5

WattMaster WHP Section 4

2.2.2 Analog Inputs

This connector carries the analog and binary control input signals.

AIN1 - Space Temp - This input accepts a two wire 10K Type III the r m i sto r t e mperature sensor. The sensor measures 10,000 Ohms @ 77°F. The resistance drops as the temperature increases. The sensor is connected between this terminal and the GND terminal. This input is also monitored for push-button override commands. The push-button is only active during unoccupied hours so a push during occupied hours has no effect.

AIN2 - Slide Adjust - If the OE212 or OE213 space temperature sensor is installed, the sensor contains a slide adjust control for varying the current heating and cooling setpoints. If the OE210 or OE211 sensors are used, this input will not be used.

AIN3 - Discharge Temp - The discharge temperature reading is used to detect discharge air temperature and to monitor for equipment failure. Once the compressor has activated, the discharge air temperature has 10 minutes to change by 5°F or the controller assumes a mechanical failure has occurred.

AIN4 - Leaving Water Temp and/or Dirty Filter Alarm - Can provide status only water temperature and/or dirty filter contact closure. If both are used at the same time, water temperature will be lost when the dirty filter contact is closed.

AIN5 - Lockout - If this input is active all operations are terminated to protect the equipment.

GND - Common return wire. This point is tied to ground on the WHP Controller.

2.2.3 Analog Output Description

AOUT - Analog Output - This output is not used.

2.2.4 Relay Output Descriptions

COM1-3 - Common 1 thru 3. - This ties the common return of the first 3 outputs together.

OUT1 - Fan On/Off - The fan is enabled to run when this contact is closed. OUT2 - Reversing Valve or Heat 1 - This output enables the reversing valve if

you have configured the WHP Controller for a compressor and reversing valve configuration. If the WHP Controller is configured for individual staging of heating and cooling (no reversing valve) then this output enables heating stage 1.

4-6 Start-Up and Troubleshooting

WattMaster WHP Section 4

OUT3 - Compressor or Heat 2 - This output enables the compressor if you have configured the WHP Controller for a compressor and reversing valve configuration. If the WHP Controller is configured for individual staging of heating and cooling (no reversing valve) then this output enables heating stage 2.

OUT4 - Heat Pump Reset or Cool 1 - This output can be used to reset a compressor that has gone off line. If the WHP Controller is configured for individual staging of heating and cooling (no reversing valve) then this output enables cooling stage 1.

OUT5 - Aux. Relay or Cool 2 - If you have configured the WHP Controller for a compressor and reversing valve configuration this output can be configured as follows:

1.) Stage 2 for cooling and/or heating mode.

2.) Auxiliary scheduling relay. In this mode it can be programmed to follow an

externally broadcast schedule signal.

3.) Auxiliary relay. In this mode it can be used for any function requiring a man-

ual user intervention.

4.) Isolation valve. May be used to initiate opening of an isolation valve in case of

high loop water pressure even if the WHP Controller is satisfied or in an unoccupied mode. In occupied mode this relay operates in conjunction with the

compressor. If the WHP Controller is configured for individual staging of heating and cooling (no reversing valve) then this output enables cooling stage 2.

COM4-5 - Common 4 and 5. - This ties the common return of the last 2 outputs together. Jumper this terminal to COM1-3 if the unit does not have separate cooling and heating power supplies.

2.2.5 RS-485 Communications Connector

This connector provides the connection point for the Local Loop RS-485 communications loop. The wiring consists of a twisted pair of wires with a shield.

T - RS-485 (+) Communications terminal SHLD - Common return wire, this point is internally tied to GND on the WHP

Controller.

R - RS-485 (-) Communications terminal

Start-Up and Troubleshooting 4-7

WattMaster WHP Section 4

2.2.6 WHP Controller Wiring

Communication LED

Figure 4-4:

Typical WHP Controller Wiring Diagram

4-8 Start-Up and Troubleshooting

WattMaster WHP Section 4

3.0 Loop Controller Overview

3.1 How It Works

3.1.1 Initialization

On system powerup LED2 remains extinguished for five seconds. After this delay, the LED2 will blink out the address of the controller (Address Switch Setting). The LED2 will then extinguish for another five seconds and then the LED2 will begin blinking a diagnostic code every ten seconds. This code is described in the troubleshooting section. The duration of a powerup initialization sequence is roughly thirty seconds.

During this initialization period, the controller retrieves all operating setpoints from its non-volatile EEPROM memory and initializes all outputs to an OFF condition.

3.1.2 Operating Summary

There is a standard set of operating instructions that are continuously performed over and over during normal Loop Controller operations. They are listed below.

a Read analog inputs for temperatures, pressures and binary contact closures b Checks for new setpoints from System Manager or Prism Software and keeps the

status values updated for these interfaces.

c Looks for “request to run” broadcast from any installed WHP Controller or from

an on-board binary input. d. Set all outputs to match calculations for heat rejection or addition. e. Store data in internal trend log if ready for another log f. Broadcasts the operating commands to all WHP Controllers. g. Tests for lead/lag pump changeover if both pumps are off. h. Repeat steps a-g continuously

Start-Up and Troubleshooting 4-9

WattMaster WHP Section 4

3.2 Loop Controller Inputs & Outputs

3.2.1 Analog Inputs

AIN1 - Return Water Temp - This input accepts a two wire 10K Type III thermistor temperature sensor. The sensor measures 10,000 Ohms @ 77°F. The resistance drops as the temperature increases. The sensor is connected between this terminal and the GND terminal.

AIN2 - Supply Water Temp - This input accepts a two wire 10K Type III ther mistor temperature sensor. The sensor measures 10,000 Ohms @ 77°F. The resistance drops as the temperature increases. The sensor is connected between this terminal and the GND terminal.

AIN3 – Proof of Flow/Loop Pressure - This input accepts a differential pressure contact closure for proof of flow or a 0-50 PSI (0-5VDC) pressure transducer signal.

AIN4 - Outdoor Air Temp - The OA temperature is used to determine if pumps should be turned on during off periods, to prevent freezing. When the OA temperature is below 40° F, the pumps will be turned on.

AIN5 - Manual Reset Input - Used to restart equipment after alarm condition has occurred. When this input is shorted to GND by a momentary pushbutton, a signal to restart is sent.

AIN7 – Phase Loss – If a phase monitor is being used, a normally open contact is connected here. When a loss of phase is detected, this contact closes shutting down the Loop Controller.

GND - Common return wire. This point is tied to ground on the Loop Controller.

3.2.2 Analog Output

This connector carries a 0-10 volt control signal for the following items:

AOUT1- Pump VFD Signal - If you have selected the variable speed pump option this output signal is used to control the loop pressure.

AOUT2 - Proportional Heat Signal - This output may be used when a modulating signal is required to control heat addition temperature.

GND - Common return wire, this point is tied to GND on the Loop Controller.

4-10 Start-Up and Troubleshooting

WattMaster WHP Section 4

3.2.3 Binary Output

R1 – Compressor Enable – Energizes the first stage of cooling.

R2 – Main Pump – Energizes the lead water pump.

R3 – Standby Pump – Energizes the standby pump if the main pump fails to

start.

R4 – Alarm Indicator – Energizes when an alarm occurs on the Loop Controller.

R5 – Not Used – This output is not used.

COM 1-3 - Common – 24 VAC from the AHU is connected to this terminal and

is the common for inputs 1 through 3.

COM 4-5 - Common – 24 VAC from the AHU is connected to this terminal and

is the common for inputs 4 and 5.

3.2.4 Relay Expansion Board - Outputs

This connector carries the output relay dry contact open/closed signal.

Relays 1-4 - Heat Addition/Rejection Stages - Can be configured to be used for

either stages of heating or cooling of water when required.

Relays 5-8 - Heat Addition/Rejection Stages – Same as above, can be used for

heating or cooling of the water.

3.2.5 Analog Input Expansion Board

The following inputs use dry contact open/closed signals.

AIN1 – Fire Alarm Contact - Used to shut down all equipment in case of a

smoke or fire condition.

AIN2 - Request to Run - Used to initiate system start when a water source heat

pump controller other than the WattMaster WHP Controller is used.

Warning: Fire Alarm Contact input must be connected to the AIN1- GND

terminal if it is not used, a jumper must be connected between AIN1 and GND, since this is a normally closed contact input. If this is not

done the system will not operate.

Start-Up and Troubleshooting 4-11

WattMaster WHP Section 4

3.2.6 Comm Connector - Communications

RS-485 Communications Connector - This connector provides the connection point for the Local Loop RS-485 communications loop. The wiring consists of a twisted pair of wires with a shield.

T - RS-485 (+) Communications terminal

SHLD - Common return wire, this point is internally tied to GND on the WHP

Controller.

R - RS-485 (-) Communications terminal

3.2.7 Power Terminal

This connector provides power to the Loop Controller

24 VAC - Connect to the “HOT” side of the control transformer.

GND - The grounded side of the control transformer. If the secondary of the con-

trol transformer is not grounded, you must still observe polarity if the transformer powers any other device!

Warning: Connect only the GND terminal to the grounded side of a transformer

Failure to properly observe polarity will result in damage to the system. Observe polarity at all points in the system.

4-12 Start-Up and Troubleshooting

WattMaster WHP Section 4

Local Loo p R S-485

Connect To Next Controller And/Or

MiniLink On Local Loop

9600 Baud

(See Note 3).

Optional Pressure sensor

Line Voltage

Figure 4-5: Loop Controller Inputs & Outputs

Start-Up and Troubleshooting 4-13

WattMaster WHP Section 4

4.0 Start-Up

4.1 Blink Codes for WHP Controllers

The WHP Controller uses an on board LED to indicate various diagnostic conditions during powerup and operation. The WHP Unit LED is labeled “COMM”. Starting with power up the LED blink codes are as follows:

• Off for five seconds

• COMM LED blinks the board address (Address 14 = 14 blinks)

• Five second pause

• Twenty second time delay - LED blinks twenty times

• Status code is repeatedly blinked every ten seconds to indicate controller

status:

Priority No. of Blinks Status

Lowest 1 Normal Operation

- 2 Override Active

- 3 Bad Space Sensor

- 4 Heat Pump Lockout

Highest 5 Communication Failure

Figure 4-6: Diagnostic LED Blink Codes

Only the highest priority failure code will be shown. You must correct the highest priority alarm before other problems will be indicated.

4-14 Start-Up and Troubleshooting

WattMaster WHP Section 4

4.2 Blink Codes for Loop Controllers

The Loop Controller uses an on board LED to indicate various diagnostic conditions during powerup and operation. The Loop Controller Unit LED is labeled “LED2”. Starting with power up the LED blink codes are as follows:

• Off for five seconds

• COMM LED blinks the board address (Address 14 = 14 blinks)

• Five second pause

• Status code is repeatedly blinked every ten seconds to indicate controller

status:

Priority No. of Blinks Status

Lowest 1 Normal Operation

- 2 Pump and/or Flow Failure

- 3 Bad Water Temp Sensor

- 4 Single Phase Shutdown

- 5 Water Pressure Alarm

Highest 6 Fire Alarm

Figure 4-7: Diagnostic LED Blink Codes

Only the highest priority failure code will be shown. You must correct the highest priority alarm before other problems will be indicated.

4.3 Communications Checklist

• WHP Controllers are addressed from 1 to 30 on each loop except the loop with the

WHP Loop Controller. This loop can only use address 1 thru 29 for the WHP Controllers. WHP Loop Controller is addressed as 30 on the loop it is connected to.

• Power has been cycled after changing addresses

• A multiple loop CommLink II is powered and connected to the communications loop.

• System Manager is connected to one of the local loops.

• The MiniLinks on each local loop are addressed with a unique address 1 thru 30,

depending on the number of loops on your system.

Start-Up and Troubleshooting 4-15

WattMaster WHP Section 4

4.4 Installation and Commissioning Information

Familiarize yourself with the installation manual and system wiring diagrams before installing!

1. Check to see if you have all the correct components for your installation.

2. Establish the location for the CommLink Interface first. This is where your communi-

cation cable will begin.

3. Layout your communication wiring. For systems with more than 30 WHPs or more

than one MiniLink, there are multiple communication loops:

A. The Network Loop - This loop originates at the CommLink and interconnects MiniLinks together.

B. The Local Loop – This loop originates at the MiniLink. The WHPs, Loop Controllers and the System Manager are connected to this loop.

Tip: Using the WattMaster color-coded and labeled Communication Cable insures a

quality installation. It also makes your installation much easier and less likely to have communications wiring errors!

. Communication cable must always be shielded – no exceptions!

5. Mount controllers in appropriate locations according to their operating specification.

6. Address controllers according to location and addressing instructions located in the

system manual.

7. With no power connected, wire controller according to wiring diagrams and in

accordance with local codes. Never apply power until you have completed these procedures in accordance to all system instructions.

8. After completing all wiring connections, unplug the terminals for power and commu-

nications. Always unplug the communications loop first and then the power. When reconnecting the wiring, connect the power first and then the communication loop.

9. Continue step 8 until all devices have been wired and the power and communication

terminals have been unplugged.

4-16 Start-Up and Troubleshooting

WattMaster WHP Section 4

10. Install CommLink and power-up. At this point you are ready to begin commissioning the system. It is preferred, though not necessary, to use a PC with Prism software to assist in the commissioning process.

11. Start with the first controller on the communication loop or in multiple loop systems; start with the MiniLink or with the System Manager. Plug in the Communication terminal then plug in the Power terminal.

12. Observe the LED indicator for the blink codes as outlined in the troubleshooting section of the manual. The blink code will first verify the address, then the operation. If the address is incorrect, reset the dipswitch, then reapply power to the controller.

13. After each controller is connected and completes its initialization sequence, use the PC or System Manager to verify communication to that device. If you cannot communicate, verify wiring, voltages, etc. in accordance with the troubleshooting section in the system manual. Do not proceed to the next device until you are properly communicating with the current device.

Continue this process until all controllers are connected and properly communicating.

By following the above steps and procedures, your installation will be much faster and trouble free. Remember that each controller only contains one puff of smoke. Making sure that all wiring terminations and voltages are correct prior to applying power to a controller will insure that you don’t use that one puff.

Start-Up and Troubleshooting 4-17

WattMaster WHP Section 4

COMM LINK II

TO OTHER MINILINKS

(NETWORK TERMINALS ONLY)

TO OTHER WHP CONTROLLERS

SYSTEM MANAGER POWER SUPPLY

GND

24VAC

POWER

LOOP

DOG

CPU

2 4 V A C

G N D

V1V2V3

M U8

CX10

CX12

CX14

CX13

INPUTS

RS-485

COMM

LED1

LED2

VREF ADJ

TEST POINT

CX15

03/31/04 03:38PM WED

OCCUPIED

NO ALARMS

INTERFACE

(MULTIPLE LOOP)

COMMUNICATIONS

SHLD

RS-485

S101716 REV. 1

SYSTEM MANAGER

COMM

T SHLD R

LD4

C21

CX1

RN1

TB1

HLD

CX5

LD6

LD7

PWR

LD8

RN3

LD9

+VREF

5.11V

EWDOG

RV1

R28

ADDRESS

VDC

RN5

PU1

IN1

IN2

PU2 D7

IN3

PU3 D8 PU4

IN4

D9 PU5

IN5

D11

C10

PU7

GND

D14

GND

C12

U13

AOUT1 AOUT2 AIN7

D15

C17

GND

PJ1

TB3

C20

R26

PJ2

PRESSURE SENSOR

GND

24VAC

NETWORK

Figure 4-8:

Communications Loop Wiring

EXPANSION

CX2

CX3

CX4

RLY1

D2D3D4D5

RLY2RLY3RLY4RLY5

OM1-3

PAL

EPROM

RAM

PHILIPS

ADD 1 2 4 8 16 32 TOKEN NETWORK

SW1

0-5

0-1

VDC

VDC JP1

C14

U15

C15

PJ3

TUC-5R PLUS

(1 MEG)

YS101816 REV. 2

RN2

OM4-5

TB2

CX6

RN4

NE5090NPB3192 0PS

CX8

U10

D10

R10

D13

D12

C11

R13

R11

U11

MC34064A

SC1

R15

R19

R22 R24 R25

C13

U12

C16

U14

TB4

D19

GND

R27

D16

D18

D17

POWER

C19

C18

7824CT

24VAC

VR2

VR1

T'STAT

RLY IO BD.

RLY IO BD. IN1

IN2 IN3 IN4

GND

AOUT1

YS101790

ANALOG IN MOD I/O BD.

S101784

REC.

12V

IN 1

AIN

5 GND GND

OUT

PRESSURE

SENSOR

S101564

COMM

T SHLD R

LD4

REC.

12V

IN 1

AIN

5 GND GND

OUT

PRESSURE SENSOR

S101564

RELAY

OUTPUT COM 1-3 OUT

RAM EPRO M

COMM

DDRESS ADD

RAM EPRO M

COMM

DDRESS AD D

EWDOG

OUT

2 OUT

OUT

4 OUT

5 COM 4-5

-5

COMM

TEST

0-5

VDC

PWR

GND

0-1

VDC

24VAC

RELAY OUTPUT

COM 1-3

OUT

5 COM 4-5

-5

COMM

TEST

0-5

VDC

PWR

GND

0-1

VDC

24VAC

4-18 Start-Up and Troubleshooting

Heat Controller Water Source Heat Pump User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual