Steffes 9180 - Manual (Page 3)

Safety PrecautionS
Fully assemble the system and load ceramic heat storage 1.
brick prior to energizing the system.
Pressure relief valve must be installed prior to operation of 2.
the system.
Use or storage of explosive or flammable gasses or liquids 3.
within close proximity of the system presents a hazard.
Clearance requirements are critical to safe operation of the 4.
system. Follow all requirements specified in this manual
(Page 3.03).
Keep the top of system clear. 5.
Use caution when working around the heating system as inlet 6.
and outlet piping can be very hot.
De-energize all branch circuits before servicing. This heating 7.
system may be connected to more than one branch circuit.
Installation of and/or service to this heating system should be 8.
performed by a qualified technician in accordance with in-
formation contained herein and with national, state, and local
codes and requirements.
Repeated error codes on the system display (pages A.10 – 9.
A.13) indicate a need for service by a qualified technician.
Special requirements must be considered if placing the sys- 10.
tem in a garage or other area where combustible vapors may
be present. Consult local, state and national codes and regula-
tions to ensure proper installation.
Built-in Safety DeviceS
The ThermElect Hydronic heating system incorporates safety devices to ensure normal operating temperatures are
maintained. The chart below describes these safety devices.
T
herm
e
lecT
h
ydronic
S
afeTy
i
nformaTion
dEVICE
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.
Right side of system.
This linear limit switch monitors the temperature of the wa-
ter in the exchanger and interrupts power to the core blower
if a water temperature of 250 o F/121 o C is exceeded. If this
limit switch opens, contact a qualified service technician.
Heat Exchanger
Limit Switch
(Manual Reset)
Behind front lower
painted panel. Reset
button visible in lower
right front corner.
This linear limit switch monitors the temperature of the
water in the exchanger and interrupts power to the core
blower if a water temperature of 225 o F/107 o C is exceeded.
Outlet Water
Temperature Limit
Switch (Auto Reset)
Behind front lower
painted panel.
Pressure Relief Valve Factory provided,
field installed to outlet
of heat exchanger.
If the water pressure exceeds maximum psig, the pressure
relief valve opens. Once water pressure of less than maxi-
mum psig is achieved, the valve closes.
FUNCTION
WARNING
Hazardous Voltage: Risk of electric
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
performed by a qualified technician.
Risk of explosion. Operating the
system without the pressure relief
valve properly installed can cause
an explosion. Connect the pressure
relief valve in a vertical, upright po-
sition with the supplied fittings. DO
NOT modify this assembly. DO NOT
cap, plug, or otherwise obstruct the
outlet of the pressure relief valve.
Risk of fire. Violation of the clear-
ance requirements can cause im-
proper operation of the equipment.
Maintain the placement and clear-
ance requirements specified.
Hot Surface. Plumbing and other
surfaces can be hot. Use caution
when working near the system.