Application Brochure

A 152-2
In North America: tekmar Control Systems Ltd., Canada
tekmar Control Systems, Inc., U.S.A.
Head Office: 4611 - 23rd Street
Vernon, B.C. Canada V1T 4K7
Tel. [phone] Fax. [phone]
All specifications are subject to change without notice.
Printed in Canada on recycled paper.
Product design, software and literature are Copyright © 1993 by:
tekmar Control Systems Ltd. and tekmar Control Systems, Inc.
Printed in Canada on recycled paper by
Wayside Press Ltd. Vernon / Kelowna, B.C.
2
Operation
The Two Stage Setpoint Control 152 for the pool regulates the temperature of the pool water by turning its heat exchanger pump on
or off to regulate the amount of heat transfer from the heat exchanger to the pool. The Two Stage Setpoint Control 152 for the spa
regulates the temperature of the spa water by turning on or off the spa heat exchanger pump to control the heat transfer from the heat
exchanger to the spa. In systems with adequate flow rates, spa and pool temperatures can be controlled to ±1°F of setpoint.
Specifications
The following are minimum recommended specifications for the control in this application.
•The pool water temperature shall be maintained based on the programmed setpoint 1 temperature.
•The spa water temperature shall be maintained based on the programmed setpoint 2 temperature.
•The pool heat exchanger pump shall operate whenever there is a demand for pool hot water.
•The spa heat exchanger pump shall operate whenever there is a demand for spa hot water.
•The control shall be able to display and adjust the setpoint temperature, differential and time delay of each stage at all times.
•The control must be compatible with standard North American wiring hardware.
• The control shall be microprocessor-based and have two SPST internal relays with 10 amp (resistive) isolated contacts for outputs.
• The control shall be able to display the setpoint, differential and delay for either stage while the device is operating.
• The installation location must be maintained within the ambient temperature and humidity ranges specified in the D 152 Brochure
for this application, with the installer ensuring that the control and its wiring are isolated and/or shielded from strong sources of
electromagnetic noise.
• The control shall continuously monitor its temperature sensors and provide an error message upon sensor or wiring failure.
• The control components required from tekmar are a Two Stage Setpoint Control 152, one Universal Sensor 071 and two Relays 003.
Two Stage Setpoint Control 152 Adjustment Range Recommended Initial Setting
Temperature Display -85 to 302°F (-65 to 150°C)
Setpoint 1 -40 to 239°F (-40 to 115°C)
Differential 1 1 to 40°F (1 to 22°C)
Time Delay 1 0 to 19 min. 50 sec.
(10 second increments)
Operating Mode 1 Heating/Cooling Heat
Setpoint 2 -40 to 239°F (-40 to 115°C)
Differential 2 1 to 40°F (1 to 22°C)
Time Delay 2 0 to 19 min. 50 sec.
(10 second increments)
Operating Mode 2 Heating/Cooling Heat
Settings
Two Stage Setpoint Control 152 DIP switch setting for this application.
Additional Information
• For control installation and testing instructions see Brochures D 001 and D 152.
• For other control applications see Application Register A 000.
• For control theory and system integration details see Essays E 001 and E 002.
On
1
Off
2 Sensors