Hot Water Generator Connections - York AFFINITY YAFT026 Installation Manual

AFFINITY & AFFINITY ADVANCED SINGLE & DUAL CAPACITY SERIES INSTALLATION MANUAL

Hot Water Generator Connections

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. Two tanks plumbed
in a series is recommended to maximize the hot water generator
capability. 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).
NOTES: 1) Using a preheat tank, as shown in Figure 12, will
maximize hot water generator capabilities. 2) The hot water
generator coil is constructed of vented double wall copper suitable
for potable water.
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.
CAUTION: Elements will burn out if energized dry.
Figure 11: Typical Hot Water Generator Installation
3/4 x 3/4 x 1/2 tee
Venting Waste
Valve or Vent
Coupling
HWG
Water Out
HWG
Water In
Figure 12: Hot Water Generator Installation In Preheat Tank
3/4 in. x 3/4 in. x 1/2 in. Tee
Ball Valve
Vent
Water Out
HWG
Water In
NOTE: This configuration maximizes hot water generator capability.
12
Cold
Hot
Water In
Water Out
P/T Relief
Valve
In
Drain Valve
Cold
Water In
HWG
P/T Relief
Valve
Storage Tank
In
Drain Valve Drain Valve
Hot
Water Out
P/T Relief
Valve
Electric Powered
Water Heater