Blodgett SB-G Series - Manual (Page 9)

OM-G-SB 7
Installation
2. Electrical Supply Connection
a. Power is supplied to cavity controls and blower from the boiler base,
and no other electrical connections are required.
b. The maximum electrical load is 4 AMP. You must provide 115 Volt
Alternating Current, 60 Hz, 1PH, 15 AMP service. Local codes and/or the
National Electrical Code should be followed (ANSI/NFPA-70-1987 - or
latest edition). AN ELECTRICAL GROUND IS REQUIRED.
c. The electrical schematic is located in the electrical enclosure and in
this manual. In Canada provide electrical service in accordance with the
Canadian Electrical Code, CSA C22.1, Part 1 and/or local codes.
3. Water Supply Connection
a. This Model features two separate water inlets – one for the steam boiler
(treated water), the other for the spray condenser (untreated water). The
second intake will reduce treatment requirements resulting in significant
savings.
b. Cold water should be supplied to a 3/8” NPT pipe connection for
untreated water at the rear of the unit. A back siphonage device (check
valve) must be installed, complying with local plumbing codes. The
water pressure should be between 30 and 60 PSI (210 to 410 kPa). A
pressure regulator is required above 60 PSI (410 kPa). A strainer screen
at the connection is also recommended, to trap debris before it can
enter the system.
c. The condenser spray uses 0.70 to 0.95 gallons of water per minute
(2.6 to 3.6 liters per minute) at 30 to 60 PSI (210 and 410 kPa). The
spray will only operate when a steamer cavity (cooking chamber) is in
operation.
d. Water supply lines should be sized to provide for maximum water use
(the total of the boiler and condenser spray) as shown in the following
table:
Maximum Water Consumption-gal/hr (L/hr)
Gas boiler only 12.9 (48.8)
Steamer Condenser Spray Only-gal/hr (L/hr)
AT 40 PSI (280 kPa) 47.4 (180)
AT 60 PSI (410 kPa) 57.0 (215)
4. Drain Connection
a. The drain connection is made at the rear of the unit, using a 1-1/4” NPT
pipe. Do NOT use plastic pipe — the piping must be able to withstand
steam and hot water. Extend the drain piping to a nearby floor drain.
Piping of 1 - 1/4” NPT (or 1 - 1/2” NPT) is acceptable for distances of
six feet or less. If the distance to the drain is further than six feet, use 2”
NPT piping.
b. Install the drain line with a constant downward pitch. Do not allow any
water traps in the line. A trap can cause pressure to build up inside the
cavity during steaming, which will make the door gasket leak. A vertical
air gap must be maintained between the drain line and the building
drain, unless otherwise specified by local plumbing codes.
WARNING
THE UNIT MUST BE INSTALLED BY
PERSONNEL WHO ARE QUALIFIED TO
WORK WITH ELECTRICITY AND PLUMBING.
IMPROPER INSTALLATION CAN CAUSE
INJURY TO PERSONNEL AND/OR DAMAGE TO
THE EQUIPMENT. THE UNIT MUST BE
INSTALLED IN ACCORDANCE WITH ALL
APPLICABLE CODES.
IMPORTANT
IMPROPER DRAIN CONNECTION
WILL VOID WARRANTY.
Leave an air gap between the hose and the building
drain, and don’t allow water traps in the line.
CAUTION
SHIPPING STRAPS ARE UNDER TENSION.
THEY CAN SNAP BACK VIOLENTLY AND
CAUSE INJURY WHEN CUT.
CAUTION
MAKING ELECTRICAL OR MECHANICAL
CHANGES TO THE UNIT WITHOUT APPROVAL
FROM THE FOOD SERVICE ENGINEERING
DEPARTMENT WILL VOID WARRANTIES.
CAUTION
DO NOT LOCATE THE BOILER CABINET
DIRECTLY OVER A FLOOR DRAIN OR
FLOOR SINK. HUMIDITY OR WATER
WILL DAMAGE ELECTRICAL.