Raypak RayTemp Hot Water Energy Management Control User Manual
Page 22
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BRANCH TEMPERATURE - NOT USED
B0 SELECT - # of Branch Sensors Installed
Not used.
RELAY SEQUENCING
HS SELECT - # of Heaters
Enter 1 thru 4 for the number of heaters connected to relay out-
puts 1 thru 4. This allows the RayTemp to correctly sequence heaters and record demand.
SP - SELECT - Stages Per Heater
Enter the number of stages in each heater, from 1 to 4.
SQ - SELECT
Firing Options
Four options for stage sequencing are available. Select number 1, 2,
3, or 4 as follows:
#1
No Lead/Lag: Stage 1 of heater #1 always fires first. The
remaining stages and heaters will fire in order as demand
increases.
#2
24-Hour Rotation: At midnight each day, the firing order is
rotated to the next heater. This distributes the work load
equally among all heaters.
#3
Lead/Lag & Rotate: With this option, heater #1 always fires
first, then the remaining heaters fire in rotation. Since some
flue
designs require heater #1 to fire first; this option meets this
requirement while still providing limited rotation.
US SELECT -
Use 24volt on/off sensing. Do not use.