12
ECO-Y INSTALLATION MANUAL
To maximize the benefits of the hot water generator a minimum
50-gallon water heater is recommended For higher demand
applications, use an 80-gallon water heater or two 50-gallon
water heaters connected in a series as shown below. Electric
water heaters are recommended. Make sure all local electrical
and plumbing codes are met for installing a hot water generator.
Residential units with hot water generators contain an internal
circulator and fittings. A water softener is recommended with hard
water (greater than 10 grains or 170 total hardness). Once air has
been purged from the water piping circuit, connect the blue wire
from the hot water generator pump to T1 on the contactor (unit
ships with this wire disconnected). The hot water generator pump
will not operate until this wire is connected to the contactor.
Typical Hot Water Generator Installation
CAUTION: Elements will burn out if energized dry .
Hot Water Generator Installation In Preheat Tank
In
Ball Valve
3/4" x 3/4" x 1/2"
tee
Cold
Water In
Hot
Water Out
P/T Relief
Valve
P/T Relief
Valve
DHW
Water In
DHW
Water Out
Drain Valve
Drain Valve
Vent
NOTE:
This configuration maximizes hot water generator
capability.
Drain Valve
In
P/T Relief
Valve
Cold
Water In
Hot
Water Out
DHW
Water In
DHW
Water Out
Ball Valve
3/4 x 3/4 x 1/2 tee
Vent
Hot Water Generator Connections
Water Tank Preparation
To install a unit with a hot water generator, follow these installation
guidelines.
1. Turn off the power to the water heater.
2. Attach a water hose to the water tank drain connection and run
the other end of the hose to an open drain or outdoors.
3. Close the cold water inlet valve to the water heater tank.
4. Drain the tank by opening the valve on the bottom of the tank,
then open the pressure relief valve or hot water faucet.
5. Flush the tank by opening the cold water inlet valve to the water
heater to free the tank of sediments. Close when draining water
is clear.
6. Disconnect the garden hose and remove the drain valve from
the water heater.
7. Refer to Plumbing Installation and Hot Water Generator Startup.