Blodgett SN-E Series - Manual (Page 9)

OM-SN-E 7
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 and must deliver a flow rate of 1.5 to 3.0 gallons per minute. If
pressure is above 60 PSIG, a pressure regulator will be needed.
A ¾ inch female NH connector (garden hose type) is used to attach the water
supply to the inlet valve. Minimum inside diameter of the water feed line is ½
inch. Use a washer in the hose connection. Do not allow the connection to leak,
no matter how slowly. The dual water standard connection, treated (softened)
water goes to the right (seen from the rear of the unit), and untreated water to
the left. Connections for both are as shown on Page 5.
3. Drain Connection
Level the steamer front to back, or pitch it slightly to the rear (maximum ¼ inch)
by adjusting the bullet feet on the stand or cabinet base.
A 2 inch (5-pan) or 1½ inch (3-pan) ID hose may be attached to the drain pipe
(supplied).
There must be a free air gap between the end of the hose and the building drain.
The free air gap should be as close as possible to the unit drain. There must also
be no other elbows or other restrictions between the unit drain and the free air gap.
Install the drain line with a constant downward pitch.
4. Factory-Stacked Units
This section is applicable only if you are installing factory-stacked units. If you
plan to stack steamers yourself, whether purchasing a new one for stacking or a
kit to stack two units you already own, you will require a field stacking kit.
Installing stacked steamers is similar to installing a single unit. The steamers are
stacked and assembled at the factory and delivered with the water connections
and drain hoses required for a single point connection.
A. Water Connection
At the water inlet valve a ¾ inch female NH connector (garden hose type) is
used for the water supply. The dual water connection has two connections
to be made. Treated water (softened) is connected to the right valve fitting
(looking from the rear of the unit) and untreated water to the left fitting.
B. Electrical Supply Connection
Separate, individual electrical connections will be required for each
steamer in the stack. Each Steamer must have its own branch circuit
protection.
C. Drain Connection
Steamers must be leveled front to back, or pitched to the rear (maximum ¼
inch) by adjusting the bullet feet on the cabinet or stand base.
For a double 3-pan stack a 1½ inch and for double 5-pan stack a 2 inch ID
hose may be attached to the unit drain. It must be rated for boiling water.
Installation
WARNING
DO NOT CONNECT THE DRAIN DIRECTLY
TO A BUILDING DRAIN. BLOCKING THE
DRAIN IS HAZARDOUS.
CAUTION
DO NOT USE PLASTIC PIPE. DRAIN MUST BE
RATED FOR BOILING WATER.
IMPORTANT
DO NOT ALLOW WATER TRAPS IN THE LINE.
A TRAP CAN CAUSE PRESSURE BUILD-UP IN
THE CAVITY, WHICH MAY CAUSE THE DOOR
GASKET TO LEAK.