WCS Natural Gas, Propane

Warmsource preparation

Plumbing and Mechanical

The WCS Plan Set is essential to every project. It lists all necessary plumbing and mechanical materials, component specifications, electrical specifications and spacial requirements. Reference this document regularly.

Components included:

  • Warmsource or Warmsource Flex

WCS boiler

Included, pre-plumbed:

The following components are pre-plumbed inside Warmsource:

  • In-line Air Separator
  • Pressure relief valve
  • Expansion tank (preset at 15 PSI)
  • Primary circulator
  • Secondary circulator
  • Automatic air vent

Included, Not pre-plumbed:

The following is a partial list of items included with the install kit, but not pre-plumbed. Refer to the WCS Plan Set for pipe sizing, layout, and the extended bill of materials:

  • 1 1/4″ combo hose bib/ball valve.
  • Additional 1″ or 3/4″ combo hose bib/ball valves (for component isolation and easy air purging)
  • Additional expansion tank (if required)
  • Natural gas to propane conversion kit (if required)
  • Backflow preventer
  • Pressure reducing valve

Electrical Rough-in

The WCS controls equipment needs access to power at all equipment locations across the project.

Each piece of equipment will likely require its own junction box. Often manifolds may share a single install location and are permitted to share duplex receptacles.

The controls diagram in the WCS Plan Set illustrates how each piece of equipment should be powered.

Controls equipment power

The Wireless Controls Diagram in the WCS Plan Set contains the electrical specifications of the controls equipment:

  • Warmsource: 120 VAC, 6.3 A, Circuit dedicated.
  • Thermostat: 120 VAC, 0.5 A, Branch circuit shared by thermostats (preferred).
  • Manifold Controller: 120 VAC, 2.1 A, Branch circuit shared by manifold controllers (preferred).

Thermostats may be cut in above light switches and manifold controllers may be added onto existing circuits. However, it is almost always a better practice to put the thermostats and manifold controllers onto a specific circuit. Refer to the Equipment and Piping Layout in the WCS Plan Set for specified equipment location.

Warmsource

Install Location

Like all gas-fired boilers, a Warmsource makes some noise and may be disruptive if installed near a bedroom or common living space. Garages and basements are the better choice. Install the unit in the location shown on the Equipment and Piping Layout in the WCS Plan Set. If this location needs to change, speak to your Project Manager before making those changes.

Clearances

The recommended minimum dimensions for the Warmsource mechanical area are below. Also shown, is the space necessary for piping and mechanical components. To ensure easy access, a 30″ x 30″ clearance in front of the unit is recommended.

Natural Gas or Propane

The boiler is equipped and adjusted to burn natural gas. For WCS projects specified for liquid propane, a  conversion kit is included in your shipment, but it has not been installed.

This kit must be installed prior to commissioning the boiler. Directions for converting the boiler to liquid propane can be found in the Lochinvar installation manual (Chapter 2: Prepare Boiler). Completing this conversion before hanging the boiler will allow for ease of install.


Tips:

  • Failing to complete the necessary fuel conversion can lead to severe personal injury or death.
  • To estimate labor costs, view the mechanical diagram in the WCS Plan Set to see how the manifold  distribution lines should be plumbed.

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