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PER Series 3
Electric-Hydronic Boilers
Installation Instructions
Installer User
This manual is for use only by
Read all instructions before
your qualified heating installer/
installing. Follow all instructions in
service technician.
proper order to prevent personal
We recommend regular service
injury or death.
by a qualified service
Consider piping and installation when determining
technician, at least annually.
boiler location.
Any claims for damage or shortage in shipment
must be filed
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PER Series 3 Electric-Hydronic Boilers Installation Instructions Please read before proceeding Hazard Definitions The following defined terms are used throughout these Instructions to bring attention to the presence of hazards of various risk levels, or to important information concerning the life of the product. Indicates presence of hazards that will cause severe personal injury, death or substantial property damage. Indicates presence of hazards that can cause severe personal injury, death or
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PER Series 3 Electric-Hydronic Boilers Installation Instructions Pre-installation General instructions Expansion tank sizing The Weil-McLain Model PER electric-hydronic boilers Undersized expansion tanks cause system water to be are assembled units designed for use in forced hot water lost from relief valve and makeup water added through heating systems. The suggested design temperature rise fill valve. Eventual section failure can result. through the boiler is 20°F. The PER boiler is a complet
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PER Series 3 Electric-Hydronic Boilers Installation Instructions Pre-installation continued Piping the boiler Wiring the boiler After the boiler is secured to the wall, attach the supply Electric shock hazard. Can cause and return piping. Refer to Table 2 for minimum pipe severe personal injury or death if sizes. power source, including service switch on boiler, is not disconnected Install manual shut-off valves in the supply and return before installing or servicing. lines to facilitate servi
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PER Series 3 Electric-Hydronic Boilers Installation Instructions Sequence of operation Call for heat 1. The thermostat contacts close, energizing the first contactor (2K), the circulator relay (1K), and the heater in the first thermal time delay (H1). 2. Approximately 15 seconds later, the thermal delay contacts (1C) close energizing the electronic circuit inside the first electronic time delay (ED1). 3. After approximately 2.5 minutes, the first electronic time delay energizes the second contac
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PER Series 3 Electric-Hydronic Boilers Installation Instructions Wiring Part number 550-141-396/0801 6 Ladder Wiring Diagram Schematic Wiring Diagram THERMOSTAT OR END SWITCH (Note 1) (240 VAC) OR L1 L2 N G To: (Note 5) RD 30 AMP 2K1 BK HEATING 30 AMP TRANSFORMER ELEMENTS F1 2K1 3K1 HIGH HIGH 30 AMP LIMIT LIMIT 4K1 B B F7 2K2 LOW LOW L1 30 AMP F2 3K1 LIMIT LIMIT EQUIPMENT 5K1 R R GROUND 30 AMP WIRE WIRE 6K1 NUTS NUTS F8 3K2 15 AMP F3 4K1 To 4 3 FUSES 1K1 1K 2 1 F9 4K2 2K 2K1 CIRCULA CIRCULATOR R
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PER Series 3 Electric-Hydronic Boilers Installation Instructions Troubleshooting This boiler contains fiberglass materials. Use care when handling these materials per instructions on page 11 of this manual. Failure to comply could result in severe personal injury. Symptom—No heat Symptom—Boiler does not shut 1. Check fuses. Power for the control circuit is supplied through the fuses down for the heating element, and the circulator. One or more contactors remain on after call for heat 2. If fuse
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PER Series 3 Electric-Hydronic Boilers Installation Instructions Operating instructions Water treatment Do not use petroleum-based cleaning or sealing compounds in boiler system. Severe damage to boiler will result, causing substantial property damage. Eliminate all leaks. Continual fresh makeup water will reduce boiler life. Minerals can build up in section, reducing heat transfer, overheating cast iron, and causing section failure. In hard water areas or low pH conditions (below 7.0), consult
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PER Series 3 Electric-Hydronic Boilers Installation Instructions Checkout procedure After filling and purging, start the boiler as follows: ❏ Check limit control operation by lowering the control settings as described in the ❏ Turn the thermostat to its lowest setting so that there is no call for “Troubleshooting” section on page 7. heat. ❏ Restore the limit control settings to their ❏ Set the limit control as recommended in the Installation Instructions. recommended values and set the thermosta
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PER Series 3 Electric-Hydronic Boilers Installation Instructions Maintenance This boiler contains fiberglass materials. Use care when handling these materials per instructions on page 11 of this manual. Failure to comply could result in severe personal injury. Draining and cleaning Checking expansion tank Undersized expansion tanks cause Do not drain the boiler during periods of shutdown system water to be lost from relief unless the heating system is exposed to freezing temperatures. At the en
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PER Series 3 Electric-Hydronic Boilers Installation Instructions Handling fiberglass materials REMOVAL OF FIBERGLASS WOOL — OR — INSTALLATION OF FIBERGLASS WOOL, COMBUSTION CHAMBER LINING OR BASE PANELS: This product contains fiberglass jacket insulation and ceramic fiber materials in combustion chamber lining or base panels in gas fired products. Airborne fibers from these materials have been listed by the State of California as a possible cause of cancer through inhalation. Avoid breathing
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PER Series 3 Electric-Hydronic Boilers Installation Instructions Dimensions 7 2" /16 1 6½" 7" /16 Incoming power 1¼" conduit 2¼" 5 19 /8" 3 31 /16" 1¼" Supply 1 19 /16" Combination pressure- 9½" temperature gauge Automatic ½" air vent Mounting brackets (2) ¾" Relief ½" valve 10" Minimum wall clearance required for element removal. 5 28 /8" 15 8" /16 15 5 2" /16 ½" Fill 14 /16" 2¼" 5" 16" 39603 1¼" Return Part number 550-141-396/0801 12
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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 shu
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PER Series 3 Electric-Hydronic Boilers Installation Instructions Parts This boiler contains fiberglass materials. Use care when handling these materials per instructions on page 11 of this manual. Failure to comply could result in severe personal injury. Item Description Weil-McLain Item Description Weil-McLain number part number number part number 1 Control tray 428-800-000 6 Jacket element cover plate 428-800-015 2 Boiler casting with insulation 318-806-200 7 Jacket bottom panel 428-600-004 3
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PER Series 3 Electric-Hydronic Boilers Installation Instructions Parts continued The following items are available but are not shown in the Parts drawing Description Weil-McLain part number Jacket door latch 562-850-089 Terminal block 512-050-013 Marker strip 590-850-020 Limit control 510-350-061 Circulator relay 510-350-219 Thermostat 511-950-275 Electronic delay, 2½ minutes 510-350-211 Thermal delay, 30 seconds 510-350-220 Retainer clip for thermal delay 562-650-102 Transformer 511-842-361 Lin
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Weil-McLain Limited Warranty for Residential & Commercial Cast Iron Boilers RESIDENTIAL WATER WARRANTY—Limited Lifetime These warranties do not cover: RESIDENTIAL STEAM WARRANTY—Limited 10 Year 1. Components that are part of the heating systems, but COMMERCIAL WARRANTY—Limited 10-Year were not furnished by Weil-McLain as a part of the boiler. NOTE: The residential steam and water warranties do not cover residential boilers installed in buildings other than one
