Groen HY-12E, Operator'S Manual

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OM-HY-12E/24E
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1. Electrical Supply Connection
a.
Panel Removal
Open the wiring and control panel by removing the
three screws on the right side panel and sliding the
panel forward. Set the panel aside.
b.
Supply Voltage
The unit must be operated at the rated nameplate
voltage, plus or minus 10 percent.
c.
Terminal Block
The terminal block for incoming power is located at
the back of the control compartment.
The ground terminal is located in the wiring
compartment above the terminal block.
The unit must have a separate ground wire for
safe operation
. This wire must be at least
8 AWG for 208/240V, or 10 AWG for 480V.
d.
Supply Wire
To determine the wire you need for the power
supply, find the operating voltage and phase on the
unit data plate. Refer to the table below or to the
label on the unit’s back for correct wire size and
insulation temperature rating. The “Electrical
Supply Connection” label inside the unit gives
directions for proper connection of the terminal
block jumpers.
The specified wire must be used in order to meet
Underwriters Laboratories and National Electric
Code requirements.
The knockout hole is sized for a two inch conduit
fitting.
e.
Branch Circuit Protection
Groen strongly recommends that the HY-12E
Steamer or each cavity of the HY-24EF have its
own branch circuit protection. Each current-
carrying conductor must have overcurrent
protection. Refer to the label for proper wire size
and type. Watertight connections to the unit are
required.
2. Water Connection(s):
Install a check valve to prevent back flow in the
incoming cold water line, as required by local plumbing
codes. Water pressure in the line should be between
30 and 60 PSIG (210 and 420 kPa). If pressure is
above 60 PSIG, a pressure regulator will be needed. A
inc h R connector (garden hose type) is used to
attach the water supply to the water inlet valve. The
minimum water feed line diameter is inc h (13mm).
Use a washer in the hose connection. Do not allow the
connection to leak, no matter how slow it may be.
If you have the twin water connection option, put
the treated water (softened) to the bottom intake
(facing the rear of the unit), and untreated water to
the top. Connections for both are made as
described above.
Voltage
Wiring - Insulation Rating
Amperes Maximum KW
THWN (70ºC) THWN (90ºC)
208 Volt, 3 Phase
Not Approved 1/0 AWG 92 32.5
240 Volt, 3 Phase
Not Approved 1 AWG 80 32.5
480 Volt, 3 Phase
1 AWG 6 AWG 40 32.5
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OM-HY-12E/24E
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