Wiring - Crown Boiler PHNTM080 Installation And Operating Instructions Manual

Positively assure all electrical connections are unpowered before attempting installation or
service of electrical components or connections of the boiler or building. lock out all electrical
boxes with padlock once power is turned off.
all wiring and grounding must be done in accordance with the authority having jurisdiction

or, in the absence of such requirements, with the national Electrical Code /nFPa 70). In
Canada, all wiring and grounding must be done in accordance with the Canadian Electrical
Code, Part 1 (Csa C22.1 - latest edition).
Failure to properly wire electrical connections to the boiler may result in serious physical

harm.
Electrical power may be supplied from more than one circuit. Make sure all power is off

before attempting any electrical work.
Each boiler must be protected with a properly sized over-current device.

never jump out or make inoperative any safety or operating controls.

the wiring diagrams contained in this manual are for reference purposes only. Each boiler

is shipped with a wiring diagram attached to the front door. Refer to this diagram and the
wiring diagram of any controls used with the boiler. Read, understand and follow all wiring
instructions supplied with the controls.
this boiler is equipped with a listed high water temperature limit function. this limit provides
boiler shutdown in the event the boiler water temperature exceeds the set point of the limit
control. Certain local Codes require an additional water temperature limit. If necessary, install
an additional water temperature limit such as a Honeywell l4006 aquastat. Wire as indicated in
Figure 10.3.
Figure 10.1 shows the location of both the high voltage and low voltage printed circuit boards with terminal strips for field
wiring. To access the PCB's, first remove the sheet metal screw used to secure the wiring compartment cover and then lift out the
cover.
1) Line Voltage (120 VAC) Field Connections – See Figure 10.2 for line voltage connections. Provide a dedicated circuit for the
boiler of 15A or greater. A service switch is recommended and is required by many local codes. Locate this switch in accor-
dance with local codes or, in the absence of any, in a location where it can be safely accessed in an emergency involving the
boiler. All 120VAC connections to the boiler itself are made on the terminal strip on the high voltage PCB located on the left
side if the wiring compartment. From top to bottom, the connections on the terminal strip are:
• 120VAC Hot
• 120VAC Neutral
• Ground
• System Pump Hot
• System Pump Neutral
• DHW Pump Hot
• DHW Pump Neutral
X Wiring
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