11
STORAGE
TANK
LOAD PUMP
HYDRONIC
LOAD
Dielectric
Unions
80 or 120 gal. Geothermal Storage Tank
for hydronic load
Dielectric
Unions
Ý
FPT
Expansion
Tank
Air
Vent
Pressure
Gauge
30 PSI
RELIEF VALVE
Air
Separator
P/T Ports
Standard 50 gal. water heater
for hot water generator
Back Flow Preventer /
Pressure Reducing Valve
*NOTE: A 30 PSI pressure relief valve (Part No: SRV30)
should be used in hydronic applications.
Ball Valve
COLD
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HOT
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Ý
FPT
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Water-To-Water
Combination Unit
Typical Buffer Tank Installation
Unit with Hydronic Storage Tank and Domestic
Water Heater Tank
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
as shown below or two 50-gallon water heaters connected
in a series. Electric water heaters are recommended. Make
sure all local electrical and plumbing codes are met for
installing a hot water generator. The unit is not supplied
with an internal circulator. A DPK5 kit will need to be
purchased to connect to the hot water generator. The DPK5
Unit Model
Copper I.D. Pipe Size
(in)
Flow Rates (GPM)
Maximum Feet of
Pipe One Way
Total Number of
Elbows
Recommended
Storage Tank Size
038
1.25
9
30’
10
80 U.S. Gals
049
1.25
12
30’
10
80 U.S. Gals
064
1.25
15
30’
10
120 U.S. Gals
072
1.50
18
30’
10
120 U.S. Gals
Hydronic Storage Tank Recommendations
Hot Water Generator Connections
kit is supplied with installation instructions, circulator, tank
adaptor and temperature limit switch. Be sure to burp the
pump. Open the screw 2 turns only in the end of the pump
motor (if Grundfos
®
pumps are used) to allow trapped air
to be discharged and to ensure the motor housing has
been flooded. A water softener is recommended with hard
water (greater than 10 grains or 170 ppm total hardness).
Geothermal
Heat Pump
AFFINITY COMBINATION INSTALLATION MANUAL
Содержание YACT038-072
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