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Part number 550-141-396/0801
13
PER Series 3 Electric-Hydronic Boilers Installation Instructions
60%
70%
80%
90%
100%
200 210 220 230 240
Input Voltage
Percent of Rated Capacity
39601
Ratings
DOE
Required wire sizes and weights
Boiler
model
number
DOE heating
capacity
Boiler input Number of
elements
Element size Total
amperes
Volts phase
wire
Wire size
90˚C field
wiring
Boiler
water
content
Approximate
shipping wt.
BTU/Hr KW KW (Note 2) (Note 3) Gallons lbs.
PER-15 51,000 15 3 5 65 240/1/3 4 5.2 215
PER-20 68,000 20 4 5 86 240/1/3 3 5.2 215
PER-25 85,000 25 5 5 107 240/1/3 1 5.2 215
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