Velocity Shadow Series, Installation And Operating Instructions Manual

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47
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 field 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 field connection wiring.