GOLD GV Water boiler series 3 — manual
IIIh Water piping — multi-zone radiant system
Figure 14a Manual bypass; fixed temp
operation only
Zone 2
Multi-zone radiant heating system piping
12" |
max |
Zone 1
Cold water
fill
Figure 14b (circulator zoning) show suggested piping for these systems.
Select an automatic temperature control valve or motor- operated valve which can be adjusted for the desired supply water temperature.
Zone-valve zoning — The suggested piping uses a separate circulator for system circulation to provide the higher flow typical of radiant heating systems and to assure good temperature distribution in the system when the return water temperature is low.
Circulator zoning — The GV internal circulators must not be removed. Provide a separate circulator for each zone.
GV Boiler
85015b
Figure 14b Auto return temp regulation; outdoor reset or fixed temp
Zone 2
Outdoor reset control
Apply Figure 14a or 14b for any system intended for outdoor reset of the supply water temperature. Use a
Legend
12" |
max |
Zone 1
Cold water
fill
1 | Boiler isolation valves |
2 | Automatic air vent (with |
| expansion tank), or connect to tank fitting |
| |
3 | Diaphragm- or |
| used (For |
| from top of air separator to tank fitting as in |
| Figure 10.) |
4 | Zone valve |
5 | System or zone circulator |
6 | Flow/check valve |
7 | Hose bibb purge valve |
8 | Boiler pressure/temperature gauge |
GV Boiler
85018b
9 | System supply temperature gauge |
10 | Boiler return temperature gauge |
13Supply temperature automatic mixing valve
34 | Part number |