HTP EL-399 - Manual (Page 8)

8
LP- 293 REV. 5.20.14
NOTE: If the boiler is exposed to the following, do not operate until all corrective steps have been made by a qualified serviceman:
1. FIRE
2. DAMAGE
3. WATER
Any claims for damage or shortage in shipment must be filed immediately against the transportation company by the consignee.
DO NOT USE THIS APPLIANCE IF ANY PART HAS BEEN SUBMERGED IN WATER. Immediately call a qualified service technician.
The appliance MUST BE replaced if it has been submerged. Attempting to operate an appliance that has been submerged could create
numerous harmful conditions, such as a potential gas leakage causing a fire and/or explosion, or the release of mold, bacteria, or other
harmful particulates into the air. Operating a previously submerged appliance could result in property damage, severe personal injury,
or death.
NOTE: Appliance damage due to flood or submersion is considered an Act of God, and IS NOT covered under product warranty.
Be sure to disconnect electrical power before opening boiler cabinet or performing service. Failure to do so could result in an electrical
shock that could result in property damage, serious personal injury, or death.
Due to the low water content of the boiler, improper sizing of the boiler with regard to heating system load will result in excessive cycling
and accelerated component failure. HTP DOES NOT warrant failures caused by improperly sized boiler applications. DO NOT oversize
the boiler to the system. Modular boiler installations greatly reduce the likelihood of boiler oversizing.
B. IMPROPER COMBUSTION
C. GAS
Should overheating or gas supply fail to shut off, do not turn off or disconnect
electrical supply to the circulator. Instead, shut off the gas supply at a location
external to the appliance.
D. WHEN SERVICING THE BOILER

To avoid electric shock, disconnect electrical supply before
performing maintenance.

To avoid severe burns, allow boiler to cool.
E. BOILER WATER

If you have an old system with cast iron radiators, thoroughly flush the
system (without boiler connected) to remove sediment. The high-
efficiency heat exchanger can be damaged by build-up or corrosion
due to sediment. HTP recommends a suction strainer in this type of
system.

Do not use petroleum-based cleaning or sealing compounds in boiler
system. Gaskets and seals in the system may be damaged, possibly
resulting in substantial property damage.
 Do not use “homemade cures” or “boiler patent medicines”.
Substantial property damage, damage to boiler, and/or serious
personal injury may result.

Continual fresh make-up water will reduce boiler life. Mineral buildup
in the heat exchanger reduces heat transfer, overheats the stainless steel heat exchanger, and causes failure. Addition of
oxygen from make-up water can cause internal corrosion in system components. Leaks in the boiler or piping must be repaired
at once.
NOTE: DO NOT add cold make up water to the system when the boiler is hot. Thermal shock can potentially cause cracks in the heat
exchanger. Such damage IS NOT covered by warranty.
Do not obstruct the flow of combustion and ventilating air. Adequate air must be provided for safe operation. Failure to keep the
exhaust vent and intake pipe clear of ice, snow, or other debris could result in property damage, serious personal injury, or death.