Burnham RSA User Manual download pdf (Page 30)

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. Conrm 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 oor drain or outdoor

area).

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

or valve.

5. Open hose bib.

6. Open ll 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 ow 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 lling the system until the

pressure gauge reads 12 psig. Close ll valve.

(Note - If make-up water line is equipped with

pressure reducing valve, system will automatically

ll 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 lled 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 eld lubrication. Water lubricated

circulators do not need eld 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 xed 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

xed 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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Burnham RSA User Manual Page 30

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