User Guide

DANGER

Electrical Shock Hazard. 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.

X Wiring

WARNING

 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.

NOTICE

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locationsformakingbothhighvoltageandlowvoltageeldconnections.

1) Line Voltage (120 VAC) Field Connections–Leadsforthelinevoltageconnectionsarelocatedinthejunctionboxasshown

in Figure 10.1. Provide a dedicated circuit for the boiler of 15A. A service switch is recommended and is required by many

local codes. Locate this switch in accordance 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 wire nut connections, except

for the ground, which is a screw. The leads are color coded as follows:

• 120VAC Hot - Black

• 120VAC Neutral - White

• Boiler Pump Hot - Red

• System Pump Hot - Yellow

• DHW Pump Hot - Blue

SeeFigure10.2forlinevoltageeldconnectionwiring.