Blodgett SB-E Series - Manual (Page 9)

OM-E-SB 7
Installation
2. Water Connection
a. Cold water is supplied via a 1/2” NPT pipe connection at the rear of the
unit. A check valve (back siphonage device) must be installed in accord
with local plumbing codes.
b. Water pressure should be between 30 and 60 PSI. If it is over 60 PSI, a
pressure regulator is required. A strainer screen at the connection is also
recommended, to trap any debris before it can enter the system.
c. The boiler uses water at the maximum rate per hour shown below.
3. Drain Connection
a. The drain connection is made at the rear of the unit with 1 - 1/4” NPT pipe.
DO NOT USE PLASTIC PIPE. DRAIN PIPING MUST WITHSTAND STEAM AND
BOILING 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. The drain line must be installed with a constant downward pitch. Do not
permit any water traps in the line. DO NOT CONNECT THE LINE DIRECTLY
TO ANY BUILDING DRAIN. A vertical air gap of at least two inches must be
maintained between the drain line and the building drain unless otherwise
specified by local plumbing codes.
4. Safety Valve
Ensure that the safety valve (see picture, Page 12) is vented properly. The
following Installation Instruction WARNING is quoted from the safety valve
manufacturer:
“During operation this valve may discharge large amounts of steam and/or hot
water. Therefore, to reduce the potential for bodily injury and property damage, a
discharge line MUST be installed that:
a. is connected from the valve outlet to a safe point of discharge with no
intervening valve.
b. allows complete drainage of both the valve and the discharge line.
c. is independently supported and securely anchored so as to avoid applied
stress on the valve.
d. is as short and straight as possible.
e. terminates freely to atmosphere where any discharge will be clearly visible
and is at no risk of freezing.
f. terminates with a plain end which is not threaded.
g. is constructed of a material suitable for exposure to temperatures of 375°F
or greater
h. is, over its entire length, of a pipe size equal to or greater than the valve
outlet.”
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.
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.
MAXIMUM WATER CONSUMPTION
Unit Gallons/Hour Liters/Hour
24 kW 8.2 31
36 kW 12.5 47.3
48 kW 16.9 64
Leave an air gap between the hose and the building
drain, and don’t allow water traps in the line.