Operating instructions

Figure 3: Use of Worksheet 2 and Boiler Output Graphs From Example 2
12
(1) (2) (3)
Fixture Description:
Basins, Private Lavatory
2
X
25
=
50
Basins, Public Lavatory X =
Bathtubs
20
X
20
=
400
Showers 75 X 20 = 1500
Circular Wash Sinks X =
Semi Circular Wash Sinks X =
Foot Basins X =
Laundry, Stationary Tubs
28
X
1
=
28
Kitchen Sink X =
Dishwasher in Apartment 15 X =
Clothes Washer in Apartment 48 X =
Commercial Kitchen Fixtures:
Vegetable Sink 45 X =
Single Pot Sink 30 X =
Double Pot Sink 60 X =
Triple Pot Sink 90 X =
Bar Sink 30 X =
=
1978
X 0.25
=
494.5
+
0
+ 100
=
594.5
Adjusted Probable Maximum Demand
WORKSHEET 2: COMMERCIAL SIZING
Probable Maximum Demand
Demand Factor
Hourly Dishwasher Requirement
Hourly Laundry Requirement
135F WATER PER
FIXTURE
(Gal/hr)
TOTAL NUMBER
OF FIXTURES
135F WATER PER
TYPE OF
FIXTURE (Gal/hr)
Total Column (3) Possible Maximum Demand
0
50
100
150
200
250
0 50000 100000 150000
BOILER OUT PUT (BTU/hr )
FIRST HOUR RATING (GAL/hr)
Figure 4a: MT040G Ratings at Different Boiler Outputs