Warning, Safety precautions, Built-in safety devices – Steffes 8188 User Manual
Page 3
SAFETY PRECAUTIONS
1. DO NOT energize the system while disassembled or
without ceramic heat storage brick in place.
2. DO NOT use or store materials that may produce explo-
sive or flammable gases near the system.
3. DO NOT violate the placement and clearance require-
ments specified in this manual. (Page 3.03)
4. DO NOT place anything on top of the Storage Module(s).
5. Disconnect power to all circuits before servicing. This
heating system may be connected to more than one branch
circuit.
6. Installation of and/or service to this heating system should
be performed by a qualified technician in accordance with
information contained herein and with national, state, and
local codes and requirements.
7. A repeated message of “CORE FAIL” indicates a need
for service by a qualified technician.
BUILT-IN SAFETY DEVICES
The ThermElect heating system incorporates safety devices to ensure normal operating temperatures are main-
tained. The chart below describes these safety devices.
DEVICE NAME
FUNCTION
LOCATION
ON SYSTEM
Core Charging High
Limit Switches
(Auto Reset)
These limit switches monitor the core and top temperatures.
If normal operating temperatures are exceeded, the system
will display "CORE FAIL" and the elements will not be
allowed to operate.
This limit switch monitors the discharge air temperature
and interrupts power to the core blower if the normal
operating temperature is exceeded:
160
o
F / 71
o
C (nominal)
Core Blower
Limit Switch
(Auto Reset)
This limit switch monitors the discharge air temperature
and interrupts power to both the supply air blower and the
core blower if the normal operating temperature is ex-
ceeded:
190
o
F / 88
o
C (nominal)
Supply Air Blower
Limit Switch
(Manual Reset)
Core Blower Housing
Temperature Limit
Switch (Auto Reset)
This limit switch monitors the temperature in the base of the
air handler and interrupts power to the core blower if the
normal operating temperature is exceeded:
160
o
F / 71
o
C (nominal)
In the base of the air
handler near the core
blower.
Mounted on limit
bracket at discharge
air outlet.
Mounted on limit
bracket at discharge
air outlet.
T
HERM
E
LECT
S
AFETY
I
NFORMATION
Air handler side of
each storage module
and storage module top
panel.
WARNING
Hazardous Voltage: Risk of elec-
tric shock, injury, or death. This
system may be connected to
more than one branch circuit.
Disconnect power to all circuits
before installing or servicing.
Installation of and/or service to
this equipment MUST be per-
formed by a qualified technician.
Risk of injury or fire. Violation of
the clearance requirements can
cause improper operation of the
equipment. Maintain the place-
ment and clearance requirements
specified.