EcoSmart ES50LVS Installation, Operation And Maintenance Manual - Pump
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P a g e
A check valve may be required for your system to meet local codes and to work effectively. A
check valve:
Protects against back-flow of water to avoid short circuiting around the water heater
during domestic use
Protects against thermal siphoning
Is required in all potable water systems
A drain pan is recommended underneath the appliance for all installations.
Pump
A pump is not included inside the ecosmart. Whether you are using an external pump or an
internal built-in pump, it should be sized for the system. Pumps supplied with the heat
generating units can be used as the sole pump provided it meets the needs of the system. This
is especially the case in retrofit applications where a much larger pump may have previously
been used in the system.
When set up in multi-stage mode, the pump will operate as a 3-speed pump if it is a
variable 0-10V type. If the pump is a standard 120VAC type, it will operate at a single
speed only.
When set up in single-stage mode, the pump will operate as a single-speed pump.
The ecosmart controller has a built-in pump timer that exercises the pump for 1 minute
every 24 hours to prevent the possibility of ‘sticking’ due to sediment etc.
Water Heater or Boiler Setup
Follow the manufacturer’s installation and start-up instructions of the water heater or boiler.
Make sure the equipment is turned off during installation and service. Make certain the
equipment has been refilled and all air is purged from the system before turning on the heater.
WARNING - When the system requires water temperatures higher than
125°F, a mixing valve shall be installed to reduce domestic hot water
temperature to safeguard against scalding.
Combo Systems
The ecosmart is ideal for use in combo systems which provide space heating and domestic hot
water from a single heat source. Any properly sized gas, propane or oil fired water heater or