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Electrical wiring – Raypak RAYTHERM 0135B User Manual

Page 18

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18

Electrical Wiring

The electrical power supply requirement for these boil-

ers is 120 VAC, 60 Hz. Field wiring connections and

electrical grounding must comply with the local codes,

or in the absence of local codes, with the latest edition

of the National Electrical Code, ANSI/NFPA 70.

Provide a separate fused circuit from the main electri-

cal panel to the boiler, and a disconnecting means

within sight of the boiler.

Remove the control box cover and make the power

supply connections in the field wiring compartment.

(See general location of controls drawing on page 28).

The pump is supplied and factory-wired to operate

with the boiler. The "TH" wire leads are for the room

thermostat or zone valve connections.

The room thermostat should be installed in accor-

dance with the manufacturer's instructions. The

thermostat heat anticipator should be set at 1.0

ampere (automatic ignition) and 0.60 ampere (stand-

ing pilot) for single- zone installations. For multi-zone

applications, the heat anticipator setting should be

based on the ampere load in the thermostat circuit.

NOTE: If it is necessary to replace any of the

original wiring, it must be replaced with 105°C wire or

its equivalent, except 150°C black wire must be

replaced with 150°C wire or its equivalent. See Fig.

19 for 150°C wire indication.

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