Groen CONVECTION COMBO OM-CC-E Series Operator's Manual page 7

FOR CC10-E Models:
The ground terminal is found on the relay
bracket below the terminal block. The
Convection Combo™ must have a separate
ground wire for safe operation. The ground
wire must be at least 10 AWG (2.6 mm).
FOR C/2-20E Models:
The ground terminal is found below the
terminal block. The Convection Combo™
must have a separate ground wire for safe
operation. The ground wire must be at least
8 AWG (3.3 mm) for a 100 amp circuit
breaker or 10 AWG (2.6 mm) for a 40 to 60
amp breaker.
e. Supply Wire
The type of wire needed is determined by
finding the operating voltage and phase from
the unit's back data plate and (on pre-1996
models) phase select connector. Refer to the
"Electrical Supply Connection" label on the
back of the unit for correct wire size and
insulation temperature rating.
The specified wire must be used to comply
with Underwriters Laboratories and National
Electric Code requirements.
The knockout hole is sized for a ¾ inch (19
mm) conduit fitting in CC10-E models, and
one inch (25.4 mm) for C/2-20E models.
ELECTRICAL SUPPLY CONNECTION
(All wires copper only.
Reference: National Electrical Code)
CC10-E MODELS
Voltage Phase Wire Size
208 1 6AWG (4.1mm)
208 1 8AWG (3.3mm)
208 3 8AWG (3.3mm)
240 1 8AWG (3.3mm)
240 3 8AWG (3.3mm)
C/2-20E MODELS
Size fo 75°C
Voltage
(THWN)
208 4 AWG (5.2 mm)
240 4 AWG (5.2 mm)
480 8 AWG (3.3 mm)
f. Branch Circuit Protection
Groen strongly recommends that each
Convection Combo™ have its own branch
circuit protection. A double -stacked unit
Insulation
75 o C
90 o C
75 o C
75 o C
75 o C
Size for 90°C
(TWHN)
6 AWG (4.1 mm)
6 AWG (4.1 mm)
8 AWG (3.3 mm)
7
7
OM-CC-E and C/2-E
should have separate protection for the
upper and lower steamer-ovens.
CURRENT DEMAND
CC10-E MODELS
Current
Voltage
1 Phase 3 Ph., per Line
208 44.7 A
240 38.8 A
C/2-20E MODELS
Current per line
Voltage
(Three Phase)
208 65.4 A
240 56.7 A
480 28.3 A
Each current-carrying conductor must have
overcurrent protection. Refer to the label on
the back of the unit for proper wire size and
type. Watertight connections are required.
3. Water Supply Connection
A check valve (back siphonage device) must be
installed in the incoming cold water lines in
keeping with local plumbing codes. Water line
pressure should be between 30 and 60 PSI (210
and 410 kPa). A pressure regulator is required
above 60 PSI (410 kPa).
A ¾ inch (19 mm) NH (garden hose type)
connector is required to connect the water supply
to the water inlet valve. The water feed line
diameter may not be less than ½ inch (13 mm).
Use a washer (or if necessary, two washers) in
the hose connection. Do not allow the connection
to have any leak, no matter how small.
The CC10-E and C/2-20E are equipped with a
dual water supply. Treated water must be
supplied at a minimum rate of 1.5 gallons per
minute. Untreated water must be supplied at a
minimum rate of .34 gallons per minute for the
CC10-E and .75 gallons per minute for the
C/2-20E. Minimum water pressure for both the
CC10-E and C/2-20E is 30 PSI. Double-stack
units require doubled rates. To convert a steamer
or combination oven to a single water connection,
order single cold water adapter (part # 138473).
4. Drain Connection
a. CC10-E and C/2-20E Without Drain Tank
(tabletop model)
A 1.5" hose for 10-E models or a 2" hose for
20-E models may be attached to the provided
OM-CC-E and C/2-E
Power
27.5 A 9.3 KW
24.1 A 9.3 KW
Power
21 KW
21 KW
21 KW