Burnham RSA manual VII. System Start-Up

VII. System Start-Up

A. Verify that the venting, water piping, oil piping, and electrical system are installed properly. Refer to installation instructions contained in this manual.

B. Confirm all electrical, water and oil supplies are turned off at the source and that the vent is clear from obstructions.

WARNING

Completely read, understand and follow all instructions in this manual before attempting start up.

C. Fill entire heating system with water and vent air from system. Use the following procedure on a Series Loop or multi-zoned system installed as per Figure 8 or 9.

1.Close isolation valve in boiler supply piping.

2.Isolate all circuits by closing zone valves or balancing valves.

3.Attach a hose to hose bib located just below isolation valve in boiler supply piping. (Note

- Terminate hose at a suitable floor drain or outdoor area).

4.Starting with one circuit at a time, open zone valve or valve.

5.Open hose bib.

6.Open fill valve (Make-up water line should be located directly after isolation valve in boiler supply piping between air scoop and expansion tank).

7.Allow water to flow into drain until discharge from hose is bubble free for 30 seconds.

8.When zone is completely purged of air, close zone valve or balancing valve. Open the zone valve for the next zone to be purged. Repeat this step until all zones have been purged. At completion, open all zone valves or valves.

WARNING

The maximum operating pressure of this boiler is 30 psig. Never exceed this pressure. Do not plug or change pressure relief valve.

9.Close hose bib, continue filling the system until the pressure gauge reads 12 psig. Close fill valve.

(Note - If make-up water line is equipped with pressure reducing valve, system will automatically fill to 12 psig.

10.Open isolation valve in boiler supply piping.

11.Remove hose from hose bib.

D.CONFIRM that the boiler and system have no water leaks.

E.CHECK CONTROLS, WIRING AND BURNER to be sure that all connections are tight and burner is rigid. Verify that all electrical connections have been completed, fuses installed, that the oil tank is filled and oil lines have been tested.

F.LUBRICATION. Follow instruction on burner and circulator label to lubricate, if oil lubricated. Most motors currently used on residential type burners employ permanently lubricated bearings and thus do not require any field lubrication. Water lubricated circulators do not need field lubrication.

G.ADJUST CONTROL SETTINGS with burner service switch turned “ON”.

1.SET ROOM THERMOSTAT about 10°F below room temperature.

2.PRESS RED RESET BUTTON on R7184B Oil Primary Control and release.

3.On BOILERS WITHOUT TANKLESS HEATERS equipped with L7248 electronic aquastat controller, set High Limit (HL) at 180°F. This temperature can be varied to suit installation requirements. L7248 controller has the High Limit adjustment range from 180°F to 240°F (82°C to 116°C). High Limit

Differential is fixed at 15°F (8°C).

4.On BOILERS WITH TANKLESS HEATERS equipped with L7224 electronic aquastat controller, set operating control (low limit [LL]) at 190°F and high limit (HL) at 210°F. Operating control (low limit) setting must be a minimum of 20°F below high limit setting.

L7224 controller has the High Limit adjustment range from 130°F to 240°F (55°C to 116°C), and the Low Limit adjustment range from 110°F to 220°F (43°C to 104°C). High Limit Differential is fixed at 10°F (6°C), and Low Limit Differential has adjustment range from 10°F (6°C) to 25°F (14°C).

5.ADJUSTING AQUASTAT CONTROLLER SETTINGS. To discourage unauthorized changing of Aquastat settings, a procedure to enter the ADJUSTMENT mode is required. To enter the ADJUSTMENT mode, press the UP, DOWN, and I buttons (refer to Figure 22) simultaneously for three seconds. Press the I button until the feature requiring adjustment is displayed:

•HL_­  High Limit.

•LL_­  Low Limit.

•Ldf  Low Limit Differential.

•°F  °C.

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