Application Brochure

One Stage Setpoint Control 150
Literature — A 150's, D 150, D 001, D 070
Control — Microprocessor control; This is not a safety (limit) control.
Packaged weight — 0.7 lb. (330 g), Enclosure C, PVC plastic
Dimensions — 4-3/4” H x 2-7/8” W x 7/8” D (120 x 74 x 22 mm)
Approvals —
CSA C US, CSA 22.2 No 24 and UL 873, meets class B: ICES & FCC Part 15
Ambient conditions — Indoor use only, -20 to 120°F (-30 to 50°C), < 90% RH non-condensing.
Power supply —
24 V (ac) ±10%, 50/60 Hz, 1.3 VA or 24 V (dc) ± 10% 0.02 A
Relays — 240 V (ac) 8 A , 1/4 hp
Sensors — NTC thermistor, 10 k
Ω @ 77°F (25°C ±0.2°C) ß=3892
included: Universal Sensor 071.
Programmed settings — Ten year memory backup
Control accuracy — ±0.5°F (±0.3°C) with up to 500 feet (150 m) of 18 AWG wire to sensors.
Temperature display
— -85 to 302°F (-65 to 150°C)
Setpoint
— -40 to 239°F (-40 to 115°C)
Differential (Bang/Bang) — 1 to 40°F (1 to 22°C)
Differential (PWM)
— 3 to 40°F (2 to 22°C)
Time Delay (Bang/Bang) — 0 to 19 min. 50 sec.
Cycle Length(PWM)
— 30 sec. to 19 min. 50 sec.
Operating mode
— Heating / Cooling
Temperature display
— Fahrenheit / Celsius
System Operation & Specifications
Technical Data
A 150-3
tekmar Control Systems Ltd., Canada
tekmar Control Systems, Inc., U.S.A.
Head Office: 5100 Silver Star Road
Vernon, B.C. Canada V1B 3K4
Tel. [phone] Fax. [phone]
Product design, software and literature are Copyright © 2008 by:
tekmar Control Systems Ltd. and tekmar Control Systems, Inc.
Printed in Canada on recycled paper by
Wayside Press Ltd. Vernon / Kelowna, B.C.
Control Systems
The One Stage Setpoint Control 150 is used to enable a boiler in order to maintain a constant temperature in a DHW recirculation loop
and storage tank.
Piping and Heat Source Details A dedicated boiler provides hot water to a continuously circulating domestic hot water loop and
storage tank.
Setpoint Operation Once the 150 Control is powered up, the installer / operator is required to set the
Setpoint
,
Differential
, and
Delay
settings on the 150. The control operates in an On / Off Differential mode. The 150 uses the input from the Universal Sensor 071 (S1)
to determine the temperature of the domestic hot water. Once the water temperature drops below the
Setpoint
minus half of the
Differential
setting, the 150 enables the boiler. Once the water temperature rises above the
Setpoint
plus half the
Differential
setting,
the 150 turns the boiler off and if the installer / operator has set a Delay length, the 150 then starts its Delay timer. During the time
that the Delay is counting down, the 150 will not turn on its relay. This feature allows the boiler a minimum off time between cycles.
Additional Functions Additional control functions are listed in the table in the Setpoint Controls section of the Product Catalog I 000.
All specifications are subject to change without notice.
Printed in Canada. A 150-3 - 12/08
One Stage Setpoint
Control 150
C-
Sensor
Setpoint
Differential
Delay/Cycle
PRGM
HEAT COOL
FC
Item
R+
Com
5
N/C
PWM
On
Off
6
7
Power
12
3
4
N/O
Meets Class B:
Canadian ICES
FCC Part 15
Made in Canada
H1094G
tektra 905-01
Power 24 V (ac) ± 10% 50/60 Hz 1.3 VA
24 V (dc) ± 10% 0.02 A
Relay 240 V (ac) 8 A 1/4 hp
No Power
Signal wiring must be
Date Code
rated at least 300 V
Made in Canada