Install Instructions

LAARS Heating Systems

Page 42

4.14 Plumbing Guidelines

Zoning with zone valve

- In a valve based system, there is one circulator pump at the boiler and each heating zone has a zone

valve which opens when the zone.

- Each thermostat is wired directly to the corresponding zone valve. Contacts in the zone valves provide a

proper signal to the boiler when the valve is opened.

SECTION 4. Installation

Do not exceed 12" apart

PRIMARY LOOP

SECONDARY LOOP (SPACE HEATING)

CH SUPPLY

(SPACE HEATING)

CH RETURN

PRIMARY/SECONDARY

CONNECTION

DHW INLET

DHW OUTLET

ZONE 1

ZONE 2

ZONE 3

FLOOR HEATING

Circulation pump

Check valve

Drain valve

Gate valve

Backflow preventer

Expansion tank

Air separator

(Diaphragm-type)

Automatic air vent

Pressure Relief Valve

TO DRAIN