INSTALLATION, OPERATION AND MAINTENANCE MANUAL
Easco Boiler Corp 1175 Leggett Ave Bronx, NY 1047 T: 718.378.3000 F: 718.378.4560 info@easco.com easco.com
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• Lead/lag sequencing systems
• Boiler feed systems
4.7 Fuel Burning and Handling Equipment
4.7.1 Please refer to burner manufacturer’s Installation, Operation and Maintenance
Manuals furnished with this Equipment for proper installation, fuel piping, wiring, burner
adjustment and service instructions.
4.7.2 EASCO Boiler Corp. offers a variety of Forced Draft Air, or Pressure, Atomizing
Fuel Oil and Natural Gas Firing equipment, emissions and operating controls to meet
with particular specification, system or jurisdictional requirements. For additional
information, contact EASCO Local Area Representative, or EASCO Boiler Corp., 1175
Leggett Avenue, Bronx, NY 10474, Telephone (718) 378-3000, Fax (718) 378-4560,
E-mail info@easco.com or visit us at easco.com.
4.8 Domestic Hot Water Tankless Heater
DANGER!!! High water temperature increases the risk of burns or scalding injury. Install
an automatic mixing valve at the tankless heater outlet to avoid risk of burns or scalding
due to excessively hot water at the fixtures. Adjust and maintain the mixing valve in
accordance with its manufacturer’s instructions.
4.8.1 If Boiler is ordered with tankless heater(s), connect the tankless heater piping as
recommended by its manufacturer.
4.8.2 The following guidelines should be followed when piping tankless heater:
a) FLOW REGULATION – If flow through the heater is greater than it’s rating, the
supply of adequate hot water may not be able to keep up with demand. For this
reason a flow regulator matching the heater rating should be installed in the cold
water line to the heater. The flow regulator should preferably be located below the
inlet so that the regulator is not subjected to excess temperatures that may occur
during ‘off’ periods when it is possible for heat transfer conducted back through
the supply line. The regulator also limits the flow of supply water regardless of inlet
pressure variations in the range of 20 to 125 psi.
b) TEMPERING OF HOT WATER – Installation of an automatic mixing valve will
lengthen the delivery of the available hot water by mixing some cold water with
the hot. This prevents excessive and possibly scalding hot water at the fixtures.
In addition, savings of hot water will be achieved since the user will not waste as
much hot water while seeking water temperature to his liking. Higher temperature
hot water required by dishwashers and automatic washers is available by piping
the hot water from the heater prior to entering the mixing valve. The mixing valve
should be ‘trapped’ by installing it below the cold-water inlet to heater to prevent
lime formation in the valve.
c) FLUSHING OF HEATER – All water contains some sediment, which settles on
the inside of the coil. Consequently, the heater should be periodically backwashed.
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