
37
IOM, ZS/ZT Models
Enertech Global
SECTION 5: UNIT PIPING INSTALLATION
Hot Water Generator (HWG) Installation
Units that ship with a factory installed Hot
Water Generator (HWG) must be connected
to a water heater/storage tank. Follow the
installation instructions (part # 20D052-01NN)
included with the Hot Water Generator (HWG)
Fitting Kit shipped in every Hot Water Generator
(HWG) equipped unit.
CONTENTS OF THE Hot Water Generator (HWG)
FITTING KIT:
• (1) p/n 20D052-01NN, Installation Instructions
• (1) p/n 33P211-01BN, 3/4”x 3/4”x 3/4” FPT
Brass Tee
• (1) p/n 33P210-01NN, ¾” Boiler Drain Valve
• (1) p/n 11080005001, ¾” MPT x 3-1/2” Brass
Nipple
• (3) p/n 11080006001, ½” SWT x ¾” MPT
Copper Adaptor
• (1) p/n 11080007001, ¾” x ¾” x ½” SWT
Copper Tee
Notes:
• Copper is the only approved material for
Hot Water Generator (HWG) piping.
• Units that are shipped with a Hot Water
Generator (HWG) do not have the Hot Water
Generator (HWG) pump wires connected to
the electrical circuit, to prevent accidentally
running the pump while dry. The wet rotor
pump has to be connected to the electric
circuit (master contactor) after the lines from
the water heater are installed, filled with
water & all air is purged from the system.
• Hot Water Generator (HWG) capacity is
based on 0.4 GPM Flow per nominal ton at
90°F entering hot water temperature.
PLUMBING INSTALLATION
Notes:
• All plumbing and piping connections must
comply with local building and plumbing
codes.
• Measure the distance above the floor or
shelf that the water heater is setting on,
to where the drain valve is located. This
distance must be greater than one-half the
width of the tee you’re about to install, or
you won’t be able to thread the tee on to
the water heater.
⚠
WARNING
⚠
IT IS RECOMMENDED THAT AN ANTI-SCALD
MIXING VALVE IS INSTALLED ON THE HOT WATER
SUPPLY LINE INTO THE HOME. EVEN THOUGH HOT
WATER TANK TEMPERATURES COULD APPEAR TO BE
SET AT LOWER LEVELS, HIGH TEMPERATURE WATER
FROM THE HOT WATER GENERATOR (HWG) COULD
RAISE TANK TEMPERATURES TO UNSAFE LEVELS.
Hot Water Generator (HWG) Installation with
Preheat Tank
Air Vent
Located at
System
High Point
Hot Water Out
Hot Water In
Heat Pump
Cold Water
Supply
Hot Water
Storage Tank
Shutoff
Valves
Shutoff
Valves
Drain
Valve
Cold Water
Supply
Hot Water
Water Heater
Drain
Valve
Optional Drains for
Flushing/Purging
Desuperheater Circuit
Unit Equipment Pad
Hot Water Generator (HWG) Installation with
Water Heater
Air Vent
Located at
System
High Point
Hot Water Out
Hot Water In
Heat Pump
Cold Water
Supply
Storage Tank
Shutoff
Valves
Shutoff
Valves
Drain
Valve
Optional Drains for
Flushing/Purging
Desuperheater Circuit
Hot Water
Supply
Unit Equipment Pad
ALL ENERTECH HOT WATER GENERATOR (HWG) REFRIGERANT
TO WATER HEAT EXCHANGERS ARE DOUBLE WALLED AND
VENTED FOR USE IN POTABLE WATER SYSTEMS.
Содержание ZS.
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