Weil-McLain PER 550-141-396/0801 Installation Instructions Manual page 13

PER Series 3 Electric-Hydronic Boilers Installation Instructions
Ratings
DOE
Boiler DOE heating Boiler input
model capacity
number
BTU/Hr
PER-15 51,000
PER-20 68,000
PER-25 85,000
Notes:
1. Provide manual shutoff valves in the system piping at the supply outlet and the return inlet so the boiler can be drained without draining the entire
system.
2. For other than the standard voltages shown, consult Weil-McLain Application Engineering Department.
3. Copper wire (AWG-MCM). Consult national or local electrical code manuals for runs in excess of 50 feet. Do no use aluminum wire.
4. All ratings are based on 240-volt power input. See Figure 1 for percent of boiler capacity when the input voltage is below 240 volts. Gross output
ratings. Piping loss not confined to the heated area should be added to the building loss to determine total heating equipment.
Figure 1 Boiler capacities at various voltages
100%
90%
80%
70%
60%
200 210
Input Voltage
39601
Part number 550-141-396/0801
Required wire sizes and weights
Number of Element size
elements
KW KW
15 3 5
20 4 5
25 5 5
220 230 240
Total Volts phase Wire size
amperes wire 90˚C field
wiring
(Note 2) (Note 3)
65 240/1/3
86 240/1/3
107 240/1/3
Boiler Approximate
water shipping wt.
content
Gallons lbs.
4 5.2 215
3 5.2 215
1 5.2 215
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