Weil-McLain PER 550-141-396/0801 Installation Instructions Manual Download Page 2

Part number 550-141-396/0801

2

PER Series 3 Electric-Hydronic Boilers Installation Instructions

Please read before proceeding

Failure to adhere to the guidelines on this page can result in severe personal injury, death
or substantial property damage.

When servicing boiler —

To avoid electric shock, disconnect electrical supply before performing maintenance.

To avoid severe burns, allow boiler to cool before performing maintenance.

The boiler contains fiberglass materials. Use care when handling these materials per instructions on page
11 of this manual.

Boiler operation —

Do not block flow of ventilation air to boiler. Will cause components to overheat.

Should overheating occur, do not disconnect electrical supply to circulator. Instead, shut off the electrical
supply at a location external to the appliance.

Do not use this boiler if any part has been under water. Immediately call a qualified service technician to
inspect the boiler and to replace any part of the control system that has been under water.

Boiler water —

Do not use petroleum-based cleaning or sealing compounds in boiler system. This can result in substantial
property damage.

Do not use "homemade cures" or "boiler patent medicines". Serious damage to boiler, personnel and/or
property may result.

Continual fresh makeup water will reduce boiler life. Mineral buildup in section reduces heat transfer,
overheats cast iron, and causes section failure. Addition of oxygen and other gases can cause internal
corrosion. Leaks in boiler or piping must be repaired at once to prevent makeup water.

Do not add cold water to hot boiler. Thermal shock can cause sections to crack.

Glycol — potential fire hazard —

All glycol is flammable when exposed to high temperatures. If glycol is allowed to accumulate in or around
the boiler or any other potential ignition source, a fire can develop. In order to prevent potential severe
personal injury, death or substantial property damage from fire and/or structural damage:

Never store glycol of any kind near the boiler or any potential ignition source.

Monitor and inspect the system and boiler regularly for leakage. Repair any leaks immediately to prevent
possible accumulation of glycol.

Never use automotive antifreeze or ethylene glycol in the system. Using these glycols can lead to hazardous
leakage of glycol in the boiler system.

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 substantial property
damage.

Indicates presence of hazards that will or can cause minor personal injury or property damage.

Indicates special instructions on installation, operation or maintenance that are important but
not related to personal injury or property damage.

Summary of Contents for PER 550-141-396/0801

Page 1: ...number from the boiler jacket You may list the CP number in the space provided on the Installation and service certificate found on page 9 PER Series 3 Installer Read all instructions before installi...

Page 2: ...on failure Addition of oxygen and other gases can cause internal corrosion Leaks in boiler or piping must be repaired at once to prevent makeup water Do not add cold water to hot boiler Thermal shock...

Page 3: ...d The structure to be heated should be insulated in the conventional manner used in your area for electrically heated buildings Boiler must be installed in accordance with these instructions so as not...

Page 4: ...to the valve Pre installation continued Wiring the boiler Electric shock hazard Can cause severe personal injury or death if power source including service switch on boiler is not disconnected before...

Page 5: ...ds Call for heat satisfied 5 The thermostat contacts open de energizing the first contactor 2K the circulator relay 1K and the heater in the first thermal time delay H1 6 After a minimum of 10 seconds...

Page 6: ...MER TRANSFORMER CIRCULATOR EQUIPMENT GROUND Connect wire to last fused terminal WIRE NUTS WIRE NUTS Schematic Wiring Diagram THERMOSTAT OR END SWITCH Note 1 Note 6 Note 6 Electrical shock hazard can c...

Page 7: ...a shorted coil To isolate the trouble proceed as follows a Check contactor Connect a jumper from terminal 3 of the electronic delay to the transformer wire going to terminal B on the low side of the...

Page 8: ...utomatic air vent if used 2 Fill the boiler and system to an initial pressure of about 12 pounds per square inch 3 Open automatic air vent one turn if used 4 Starting on the lowest floor open air vent...

Page 9: ...ed in the Troubleshooting section on page 7 Restore the limit control settings to their recommended values and set the thermostat to the desired room temperature Fill in Installation and service certi...

Page 10: ...to be lost from relief valve and makeup water added through fill valve Eventual section failure can result If the relief valve opens frequently check the expansion tank If the system has a pressurized...

Page 11: ...dust respirator N95 This type of respirator is based on the OSHA requirements for fiberglass wool at the time this document was written Other types of respirators may be needed depending on the job si...

Page 12: ...ns Dimensions 39603 Incoming power 1 conduit 6 2 19 5 8 31 3 16 14 5 16 8 15 16 2 15 16 28 5 8 7 1 16 19 1 16 2 7 16 Automatic air vent 1 Supply Combination pressure temperature gauge Mounting bracket...

Page 13: ...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...

Page 14: ...Description Weil McLain part number Item number Description Weil McLain 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 J...

Page 15: ...lay 2 minutes 510 350 211 Thermal delay 30 seconds 510 350 220 Retainer clip for thermal delay 562 650 102 Transformer 511 842 361 Line terminal and fuse block upper 512 050 002 Line terminal and fuse...

Page 16: ...installed by a heating contractor whose principal occupation is the sale and installation of plumbing heating and or air conditioning equipment These warranties do not cover 1 Components that are par...

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