manualshive.com logo in svg

Watts tekmar 704, Data Brochure, Page: 2 / 16

Share
Download
Watts tekmar 704 Data Brochure Download Page 2

© 

2005     D 

704 

- 

04/05 

2 

of 

16 

Typical Piping

Boiler 

Sensor

Outdoor
Sensor

Mixing Station 704, 

Multiple Temperature System

Supply

Sensor

Supply

Sensor

Boiler 

Sensor

Outdoor
Sensor

M

M

Mixing Station 704, 

Multiple Temperature System

Boiler 

Sensor

Outdoor
Sensor

Supply

Sensor

Radiant Manifold - Supply

Radiant Manifold - Return

Mixing Station 704, Multiple Zone Circulators

Boiler 

Sensor

Outdoor
Sensor

Supply

Sensor

Mixing Station 704, Multiple Zone Valves

Supply

Sensor

Boiler 

Sensor

Outdoor
Sensor

M

M

Mixing Station 704

Mixing Station 704

Supply

Sensor

Boiler 

Sensor

Outdoor
Sensor

Outdoor
Sensor

Boiler

Sensor

Boiler

Sensor

Outdoor
Sensor

Supply

Sensor

Radiant Manifold - Supply

Radiant Manifold - Return

Supply

Sensor

Radiant Manifold - Supply

Radiant Manifold - Return

Multiple 

Mixing Station 704s, 

Multiple 

T

emperature System

Outdoor
Sensor

Boiler

Sensor

Boiler

Sensor

Outdoor
Sensor

Supply

Sensor

Radiant Manifold - Supply

Radiant Manifold - Return

Supply

Sensor

Radiant Manifold - Supply

Radiant Manifold - Return

Multiple 

Mixing Station 704s,

Multiple 

T

emperature System

Summary of Contents for tekmar 704

Page 1: ... Extremely versatile the Mixing Station 704 can be set up to operate as an outdoor reset control a setpoint control or a delta T limiting control General Mixing Station 704 Table of Contents TYPICAL PIPING 2 GETTING READY 3 APPLICATION 3 DESIGN PROCEDURE 3 INSTALLATION OF MIXING STATION 704 4 OUTDOOR RESET MODE 5 OUTDOOR RESET SETTINGS 5 SETPOINT AND DELTA T MODE 6 SETPOINT AND DELTA T SETTINGS 7 ...

Page 2: ...ultiple Zone Valves Supply Sensor Boiler Sensor Outdoor Sensor M M Mixing Station 704 Mixing Station 704 Supply Sensor Boiler Sensor Outdoor Sensor Outdoor Sensor Boiler Sensor Boiler Sensor Outdoor Sensor Supply Sensor Radiant Manifold Supply Radiant Manifold Return Supply Sensor Radiant Manifold Supply Radiant Manifold Return Multiple Mixing Station 704s Multiple Temperature System Outdoor Senso...

Page 3: ...jection circulator constant speed system circulator air elimination and the electronics to drive it all With only four piping connections needed the RMB greatly reduces the time and space required for installation The RMB can be set up to operate as an outdoor reset control a setpoint control or a delta T limiting control creating flexibility never seen before in a single unit Check the contents of...

Page 4: ...Return bottom left hand connection as indicated on the plastic cover of the Mixing Station 704 Ensure that a proper isolation valve is installed 5 Connect the Boiler Supply and Boiler Return lines to the boiler loop using standard Primary Secondary piping practices STEP THREE FILLING 1 Fill system with tap water The system must be filled before operating the circulator The bearings are water lubric...

Page 5: ...escribed in the Boiler Operation section The RMC also provides boiler protection as described in the Boiler Operation section DEMAND The RMC requires a demand signal before it will begin operation The RMC can use either a powered or an unpowered demand signal Once a demand signal is received the RMC displays the demand pointer in the display and operates as described above Powered Demand The RMC r...

Page 6: ... fixed supply water temperature This type of application is a setpoint application Examples of setpoint applications include heat pump loops reheat coils and floor warming In specialized applications such as snow melting it is desirable to limit the rate of temperature increase in the system from the system s starting temperature to its operating setpoint This is desired in order to prevent thermal ...

Page 7: ...ot been installed the RMC will Enable the boiler BOILER CONTROL When the RMC controls the boiler the RMC opens and closes the boiler contact in order to control the temperature of the boiler supply water temperature When the RMC is controlling the boiler temperature the RMC will determine the boiler supply water temperature that is required to satisfy the demands of the system The RMC will also de...

Page 8: ...s required When a boiler sensor is connected to the control the RMC is capable of providing boiler protection When providing boiler protection the RMC limits the output of the variable speed injection pump in order to reduce the amount of cool water being returned to the boiler This allows the boiler temperature to increase to a point that avoids flue gas condensation Boiler Protection with Boiler ...

Page 9: ...ten the cable tie as this can cause damage to the sensor The System Supply Sensor 082 is to be installed on the System Supply pipe This sensor is required at all times If a Boiler Sensor 071 is used install the boiler sensor on either the boiler supply or the boiler return Ensure that the DIP switch on the back of the circuit board of the RMC is set to ON if the sensor is installed on the boiler s...

Page 10: ...ired using either a powered signal or an unpowered switch closure Powered Demand If a powered demand is being used connect the switched side of the 24 V ac demand circuit to the Heat Dem terminal of the terminal block Connect the second side of the 24 V ac demand circuit to the Com terminal of the terminal block Unpowered Demand If an unpowered demand is being used connect one side of the demand s...

Page 11: ...ture is displayed when the MIX RET elements are turned on This is the current temperature at the mixing return sensor The mixing return temperature is only displayed if the Outdoor Design temperature is turned OFF and a mixing return sensor is installed Mixing Target Temperature The mixing target temperature is displayed when the MIX TARG elements are turned on This is the temperature the RMC is c...

Page 12: ...mixing target temperature This item is only available if the outdoor design setting is not set to OFF Mixing Minimum Temperature The mixing minimum temperature is the lowest temperature that the control is allowed to use as a mixing target temperature This item is only available if the outdoor design set ting is not set to OFF Boiler Minimum Temperature The boiler minimum temperature item should b...

Page 13: ... on the back of the RMC This is a field replaceable item Fuse rating 1 A 1 12 hp fuse T1 A 250 V ADJUSTMENT OF SETTINGS If the outdoor temperature is cold and the rooms are cold increase the MIX DSGN setting by 5 F 3 C per day TESTING THE SENSORS Do not apply voltage to the sensor or to the sensor input of the control as this will result in damage to either the sensor the control or both the sensor...

Page 14: ...embly away from the body 4 Pull cartridge out of the motor housing 5 Install replacement cartridge making sure that the cover plate is between the cartridge flange and motor 6 Make sure the replacement cartridge corresponds to the full circulator product number A complete parts list is available from your local plumbing supply wholesaler 7 Reassemble the circulator using the new gasket and bolts su...

Page 15: ...l Impeller Non Metallic Shaft Ceramic O Ring Gaskets EPDM ELECTRICAL DATA CHART Voltz 120 Hz 60 Ph 1 Amps 2 RPM 3250 HP 1 40 1 25 DIMENSIONS WEIGHT Ship Weight 18 5 lbs 8 4 kg Motor Type Permanent Split Capacitor Impedance Protected CONTROL ADJUSTMENT MENU Mixing Setpoint Temperature 60 to 185 F 16 to 85 C Maximum Temperature Difference Between Mixing Supply and Return 10 to 70 F 12 to 21 C Off De...

Page 16: ... to tekmar during the warranty period This Limited Warranty does not cover the cost of the parts or labor to remove or transport the defective Product or to reinstall the repaired or replacement Product all such costs and expenses being subject to Purchaser s agreement and warranty with its customers Any representations or warranties about the Products made by Purchaser to its customers which are ...

Reviews:

No comments