03/19/2009
10
BI502
11.
Close
“water supply valve” and disconnect water supply.
12.
Optional – energize circulating pump during this fill operation. The water pressure from the
household system and as plumbed should typically flow through the circulating pump without the
pump running.
COMMENT
: Purge one loop at a time.
CONTROLLER SETUP
The front panel contains a red temperature select “knob” with two selection ranges – high mass/low mass.
Certain internal sequence timings and operating stage differentials adjust themselves according to the
switch position. The primary noticeable difference is the supply water start point.
The front panel temperature selection number coincides to the curves below. This temperature value
shown on the front decal (see Table 1, next page) is actually the supply water at 0° outside. Each curve
starts from a base temp point (high mass – 90°/low mass – 120°). This is the beginning ramp-up point
from typical 67° outside.
NOTE:
The customary definition of “outdoor reset” is basically opposite to this Electro Industries’
WarmFlo concept. In the case of outdoor reset you set the maximum or worst condition operating
supply temperature. As it warms up outside the supply temperature is decreased downward from that
point. In the case of Electro Industries’ WarmFlo, we begin at a minimum or comfort level supply
temperature and ramp upward to the higher temperature as it gets colder outside. The boiler products
simply use 0° as a reference and as a point to set on the dial. The curve continues to provide higher
supply temperature at temperatures below 0° F, as shown.
Field base temp selection
– shown in Figure 1 and Figure 2 are the factory default values. With Electro
Industries’ WarmFlo Analyzer model WF-ANZ7 and newer or PC software version 4.1* or newer, the
base temp start point can be changed. However the EB-WO-** must also have 6.23 or newer chip. The
range is shown in Figure 1 and Figure 2. The 0° F reference point, as set on the front dial, remains the
same; the slope of the curve lines simply shifts to a new 67° F outside point.
