User Guide

3
1. Product & Safety Information
Failure to adhere to the guidelines on this page can re-
s
ult in substantial property damage, serious injury or
death
1.5 Service and Maintenance
To avoid electric shock, disconnect electrical supply before•
performing service or maintenance.
Allow the appliance to cool down prior to servicing to avoid•
severe burns
The CHALLENGER must be maintained as outlined in this•
manual and have at least annual service performed by a
qualified service technician to ensure appliance/system
reliability.
1.6 CHALLENGER Operation
Do not block flow of combustion air to the CHALLENGER. If the1.
combustion air blockage is easily accessible and removable,
then remove it. If blockage is not obvious and cannot be
removed, have the appliance and system checked by a qualified
service technician.
Do not allow contaminated air to enter the appliance’s2.
combustion air inlet. See Section II for more information.
The CHALLENGER is equipped with a low water cut off device.3.
The CH (central heating) system piping must be filled and
pressurized to 12 psig [0.8 bar] prior to startup. The appliance
will shut down if the pressure falls below 7 psig [0.5 bar].
Should overheating occur or the gas supply fails to shut off, DO4.
NOT turn OFF or disconnect the electrical supply to the pump.
Instead, shut off the gas supply at a location external to the
appliance.
Do not use this appliance if any part has been under water.5.
Immediately call a qualified service technician to inspect the
appliance and to replace any part of the control system and any
gas control, which has been under water.
WARNING
1.7 Appliance & System Water
Have the appliance and system water chemistry checked at•
least annually by a qualified service technician.
Do not use petroleum-based cleaning or sealing compounds in•
the appliance or system. Gaskets and seals in the system may
be damaged. This can result in substantial property damage.
Do not use any product not specifically designed for hydronic•
heating systems. Serious damage to the appliance, piping
system, heating system, personnel, and/or property may occur.
Continual fresh makeup water will reduce the life of the•
CHALLENGER. Addition of oxygen can cause internal corrosion
in the system components. All leaks in the piping system must
be repaired at once to prevent makeup water.
Do not add cold water to a hot appliance. Thermal shock can•
cause premature failure to the appliance heat exchanger.