Steffes 9180 - Manual (Page 9)

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external Duct SenSor
The optional external duct sensor (Order Item #1041536)
provides the ability to monitor the duct temperature at an area
beyond fresh air makeup and/or beyond other devices and
regulate the discharge air temperature accordingly.
The duct sensor feature is enabled if the 4 bit is set in Location
53 (L053). Once enabled, the ThermElect Hydronic system
monitors temperature at both the duct sensor and the output
sensor during Y, W, or E calls from the thermostat.
Static Heat recovery unit
During operation of the ThermElect Hydronic, there is some static
dissipation that comes off of the warm outer panels. The Static Heat
Recovery unit (Order Item #1302110) moves this heat from the
ThermElect Hydronic system to an area requiring heat. Utilizing
this option can maximize efficiency when the system is installed in
an unheated area.
With the Static Heat Recovery unit installed, the ThermElect Hydronic system can
be set up to monitor temperature at the control board and/or in the brick core. If
either of these temperatures reach a point greater than the preset point, the blower
is the Static Heat Recovery unit is energized and draws heat from inside the painted
outer panels of the ThermElect Hydronic system and delivers it to the desired area
of the structure.
liftinG HanDleS
Optional lifting handles (Order Item #1302120) are available to aid in moving the
ThermElect Hydronic system into its final location.
Scr controller
The Steffes SCR (Solid State Relay Panel) is an optional control device used with
the Steffes ThermElect (8100 and 9100 Series) and Comfort Plus Commercial
(6100 and 7100 Series) Heating Systems (Order Item #1301016). It utilizes SCR
technology to enable more precise balancing of a building’s overall electric load by
varying the amount of total element input that can be energized in a Steffes furnace at
any given time in relation to the maximum allowable building load. The Steffes SCR
optimizes a building’s power quality and control.
The SCR Controller can only accept input signals from the Steffes furnace but it can
respond to all types of control inputs to include 4 – 20 Milliamp, 1 – 5 Volt DC, electric
meter pulsing, Bacnet or any building energy management system. With the 4 – 20mA
or 1 – 5 volt DC signals, the SCR will provide an output directly proportional to the
input signal. 4mA signal produces 0% output while 20mA signal products 100% output.
With the utility pulse meter input, the SCR output percentage will automatically adjust
to maintain a total maximum system load as dictated by the furnace’s set-up. With a
Bacnet, the furnace can be commanded to varying input levels remotely.
SENSOR
AIR HANDLER
9100 SERIES
THERMELECT
WATER
COIL
SCR CONTROLLER
LIFTINg HaNdLES