Sussman ES Installation, Operation And Maintenance Manual - page 10
Sussman Boilers
Installation, Operation & Maintenance Manual
10
5.
If a separate control circuit is used, it should be connected to the control circuit terminal block.
6.
Remote mounted water feed systems (i.e. condensate return, motor and pump) should be connected to the junc-
tion box provided on the outside of the boiler jacket.
7.
With main power off, make sure all wiring terminations are tight to avoid arcing, carbonizing or overheating of
contacts.
Boilers are susceptible to lightning damage due to water line connections. An industrial type
lightning/surge protector should be installed according to the manufacturer's recommendation at
the service entrance. Consult your contractor or electrical dealer.
Substitution of components or modification of wiring system voids the warranty and may lead
to dangerous operating conditions.
!
CAUTION
!
WARNING
Installation- Wiring (cont.)
Pre-Operation Check (All Boilers)
LWCO/PUMP CONTROL OPERATION AND TESTING
1.
All valves for incoming water supply are to be fully opened. Main disconnect switch is to be in the "on" posi-
tion. Boiler main switch is to be in the "on" position. Since boiler will be empty the pump or solenoid will be
energized allowing the boiler to fill with water. Control will automatically fill boiler to proper operating water
level and the pump/solenoid will be de-energized. Contactors will then energize, applying voltage to the heat-
ing elements.
2.
Pump switch operation – at this point water should be visible approximately half way up the sight glass. Slowly
open the drain valve located at the bottom of the boiler. Water level in the sight glass will begin to drop, allow-
ing the low water cut off/pump control to energize the feed water system. Close valve for proper operation.
3.
Low water cutout switch performance – open the drain valve completely. Maintain this condition until water
level falls within the gauge glass enough to cause the low water cutout switch to de-energize the heating ele-
ments. All of the contactors will be in a de-energized or open state at this time. Close the drain valve, water
feed system will automatically refill the boiler and the contactors will re-energize.
Boilers equipped with an auxiliary low water cut-off control with a manual re-set button (required as mandatory
equipment is some states): once the correct operating water level has been reached, it will be necessary to depress
the reset button in order for the contactors to re-energize.
Note:
For boilers equipped with an automatic blowdown system:
• For test 1
- the blowdown time clock must be in the “run” mode before the boiler will automatically fill.
• For test 2 and 3
- in order for the drain valve to open the blowdown clock must be in the “off” mode.
(See blowdown time clock insert) The automatic blowdown indicator light will be on when the valve is open.
This light will remain on for the duration of the blowdown cycle (a few seconds). It may be necessary to cycle
the time clock from the “run” to “off” mode several times.