Smith GT-150 Installation, Operating And Maintenance Manual page 14

Page 14
Figure 24 - Primary Loop For Multiple Boiler Installations
NOTES:
1. All piping and pumps must be supported so that no loads or stresses are applied to boiler heat exchanger. To make boiler service easy
use unions or fl exible vibration isolation kit.
2. This boiler is provided with a 1/8 in, 3 mm, vent that is not intended for continuous system venting.
3. For continuous system venting use a cast iron air scoop, for excessive air conditions use a Spirovent. Do not fi re boiler until all air is
purged from system piping. Heat exchanger damage caused by air is not covered by warranty.
4. See Table 3 for boiler pump fl ow requirements. This pump is wired to terminals C1-L2.
5. See Table 3 for Indirect Water Heater pump fl ow requirements. This pump is wired to terminals AP-L2.
6. Set pressure reducing valve to 12 psi, 83 kPa.
7. Use 30 psi, 207 kPa, relief valve max. Locate where discharge will not cause injury or damage. Follow local codes.
8. Boiler circuit piping must be sized large enough to handle maximum fl ow through unit.
9. Suggested piping. When installing an indirect water heater consult manufacturer's manual for full details.
10. Do not install any valves between the Vacuum Relief valve and the tank.
11. Do not operate boiler with service valves closed isolating the boiler from the expansion tank.
12. Do not connect this boiler to systems with cast iron radiation or to non-barrier radiant tubing. Heat exchanger damage can result.
Notice: This drawings show suggested piping confi guration and valving. Check with local codes and ordinances for specifi c requirements.
GT INSTALLATION AND OPERATION INSTRUCTIONS