BOCK 361E Installation, Betrieb und Wartung - Seite 4

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T&P RELIEF VALVE

OIL SUPPLY

ATTACH BURNER

& OIL LINES

FIGURE 4

Install a water soft-

ener if the heater is

being used in a hard

water area (water

hardness of more

than seven grains).

– 4 –

A thermostatically controlled anti-scald valve meeting requirements of CSA B125 or ASSE 1016 or

1017 should be used to temper the domestic hot water supply to fixtures to 49

Figure1 for proper installation of antiscald valve.

The temperature and pressure (T&P) relief valve has been factory installed.

To prevent water damage when relief occurs, install a discharge line from the relief valve outlet to a

place for water disposal. Do not install a reducing coupling or other restriction in the discharge line.

Arrange the line to allow complete drainage of both the relief valve and the discharge line. If the T&P

relief valve discharges periodically, service to the water system is required.

Do not place a shut-off valve between the relief valve and the water heater.

Check hand holes for tightness.

The oil tank location and installation, tank size, piping supply and burners, including all fuel handling com-

ponents must comply with the applicable codes for oil-burning equipment (CAN/CSA-B139 or NFPA 31,

local codes and regulations).

The oil supply tank must be installed

with fill and vent lines of adequate

capacity. See Figure 2 for installation

The water heater requires fuel (#1 or

diagram.

#2 heating oil), electricity and

should be closed to the chimney

and water supply. Do not use gaso-

line, crankcase drainings, or any oil

containing gasoline. Never burn

garbage or paper in the unit, and

never leave paper or rags around it.

1. The operating thermostat and high

limit are packed with the burner.

Mount the burner with bolts provided. Burners are shipped with all settings at the approximate start

point. Check inside the combustion chamber to verify that the burner tube is not obstructed or pro-

truding into the chamber. Swing back the hinged transformer and rotate the blower wheel by hand a

few turns to loosen the pump seal.

2. Bock recommends a two-pipe (suction and return) system for these heaters. Use 1/2" O.D. soft cop-

per tubing (5/8" O.D. soft copper on Sun Tec H pumps) and

packed with pump.) Note: Do not install a bypass plug if us-

install a bypass plug on two-pipe system. (See instructions

ing a gravity (one-pipe) system (See Figure 3.) For multiple

heater installations, run a separate suction

and return line for each heater (See Figure 4.)

If the combined lift and horizontal run exceeds

100', install a booster pump as close to the

supply tank as possible.

Booster pumps may be obtained from Sun

Tec Hydraulics, Rockford, Ill.

3. Return lines must be the same diameter as suction lines and extend close to the bot-

tom of storage tank but stop slightly above suction lines. Use a minimum of fittings and

make bends in tubing with as large a radius as possible. Always use flared fittings, not

compression fittings. If pipe is used instead of tubing, do not connect the burner to the

pipe – use copper tubing and form a coil before attaching tubing to burner.

4. When installing an oil water heater with an existing oil tank and lines, check existing line sizes and

compare to instructions shipped with the pump to see if they are adequate. Do not use existing lines

if they are smaller than 1/2" O.D. tube on Models 361E and 541E. Proceed as follows:

A. If existing oil heater has a one-pipe system, tee into the system to furnish oil to the heater.

B. If the existing oil heater has a two-pipe system, check whether the return line extends to the bot-

tom of the tank. It may be preferable to change the existing oil heater to a one-pipe system and

change the return line to the suction line for the heater.

C. If (B) is not applicable, tee into the existing suction line and the existing return line to supply oil to

the heater. Both suction and return lines must extend to the bottom of the tank, but if the tubing is too

small and a two-stage pump is on the existing oil appliance, the water heater pump may be starved

for oil.

D. If return lines do not extend to the bottom of the tank, use check valves on each suction line as close

C (120

F). See

FIGURE 2

FIGURE 3

GRAVITY SYSTEM