Hatco Imperial Series Installation And Operating Manual page 22

INSTALLATION
Temperature/
Pressure Gauge
3/4" Gate or
Ball Valve*
Water Inlet from
primary water
heater
Blended Phosphate Water
Treatment System†
Temperature/
Pressure Gauge
3/4" Gate or
Ball Valve*
Water Inlet from
primary water
heater
Blended Phosphate Water
Treatment System†
* Not supplied with booster water heater.
† Optional accessory.
Pressure Reducing
Valve with Bypass
20 psi (138 kPa) flow
pressure maximum
Back
Pressure
Relief Valve†
3/4"
Union*
3/4"
Union*
Discharge from T/P Valve.
Air gap must comply
with plumbing code.
Figure 10. Plumbing Connections - Compact Series 24-57 kW
Pressure Reducing
Valve with Bypass
20 psi (138 kPa) flow
pressure maximum
Back
Pressure
Relief Valve†
3/4"
Union*
Flow Restrictor†
NOTE: Centerline of booster "T" fitting must
not extend closer than 102 mm (4") to the floor.
Figure 11. Plumbing Connections - mini-Compact models
Temperature/Pressure
Relief Valve
Outlet
Inlet
Floor Drain*
Temperature/
Pressure Gauge
3/4"
Union*
Inlet
3/4"
Union*
Drain Valve*
22
English
Temperature/
Pressure Gauge
Shock Absorber
for water hammer†
Outlet to
Dishwasher
3/4"
Union*
Drain Valve*
Shock Absorber
for water hammer†
Outlet to
Dishwasher
Temperature/Pressure
Relief Valve
Discharge from T/P Valve.
Air gap must comply
with plumbing code.
Floor Drain*
Form No. EBOOSTERm_CN-0911