Weil-McLain 550-141-396/0801 installation instructions Ratings, Required wire sizes and weights

PER Series 3 Electric-Hydronic Boilers Installation Instructions

Ratings

DOE

Required wire sizes and weights

Boiler		DOE heating	Boiler input	Number of	Element size	Total	Volts phase	Wire size	Boiler	Approximate
model		capacity		elements		amperes	wire	90˚C field	water	shipping wt.
number								wiring	content
		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

Rated Capacity	100%
	90%
	80%
of
Percent	70%
	60%
	200	210	220	230	240
39601			Input Voltage

Part number 550-141-396/0801 13