Mascot FT Combination Boiler
Page 37
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 DR
AIN
TO DR
AIN
