Raypak TempTracker B-21 User manual

Catalog No.: 5100.30A Effective: 2-1-08 Replaces: 8-1-07
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TempTracker is designed to sequence
multiple boilers up to four total stages,
whether it’s one to four on/off boilers, two
two-stage boilers, or one boiler with up to
four stages. It is available factory-mounted or
loose on Hi Delta boilers, and loose on
Raytherm boilers. This control can be used
for space heating and hot water supply with
six application-specific modes to meet
various applications, including outdoor reset
for heating systems. It monitors and displays
inlet and outlet temperatures on all
applications as well as monitors outdoor
temperature when an outdoor reset mode is
utilized.
Features
•1-4 boilers/stages
•Selectable P or PID logic
•LCD display
•NEMA 1 enclosure
•Boiler-in and boiler-out water sensors
•System water sensor
•Outdoor air sensor
(Models B-27 and B-23)
•Alarm ready (pilot duty)
•24 VAC, 60 Hz, 3 VA Supply Power
•Relay Ratings
Stage 1: 5A @ 120 VAC
Stages 2 to 4: 3A @ 120 VAC
Programmable Functions
•6 programming modes
•Adjustable outdoor reset
•Min. system water temperature (70 °F)
•Max. system water temperature
oHeating – 220 °F
oDHW – 190 °F
•Temperature differential (2 to 42 °F)
•Boiler target (70 to 220 °F)
•Outdoor cutoff (35 to 85 °F)
•Boiler mass (low, med, high)
•Stage-on delay (P mode)
(10 sec. to 8 min.)
•System pump-off delay (0 to 20 min.)
•Temperature measurement (°F or °C)
Model Information
B-26 2-stage setpoint
B-27 2-stage outdoor reset
B-21 4-stage setpoint
B-23 4-stage outdoor reset
TempTracker™
2- and 4-Stage Controllers
For Hi Delta®and Raytherm®
Boilers & Water Heaters
Raypak, Inc. 2151 Eastman Avenue, Oxnard, CA 93030 [phone] Fax [phone] www.raypak.com