Victory VSPH-150 Instrukcja Obsługi Pobierz pdf (Strona 21)

VICTORY VSPH Models

4. Air control system

Diaphragm type compression tank is used to control system

pressure. It must be installed at the boiler or between boiler

and supply main pump(s).

An automatic air vent is used to remove air from the system

in Figure 17. If system pressure needs further control, add

an additional tank in parallel with original tank or install a

larger capacity tank. Use appropriate size tank for volume of

water in system. See chart for boiler’s volume.

5. Cold Water Fill

Pressure reducing (fill) valve and shut-off valve should be

installed.

6. Relief Valve Discharge Piping

Use same size or larger piping than valve outlet. Must termi-

nate 6" minimum from floor with a plain (no threads) end.

Place a bucket under pressure relief valve discharge. Make

sure discharge is always visible. DO NOT hard-pipe to drain

piping.

7. Providing Protection from Freezing

Anti-freeze is sometimes used in hydronic heating systems to

protect against freeze-up in the event of power failure or

control shutdown when the building is unoccupied. It should

be recognized that unless the building is kept above freezing

temperature by some means, the plumbing system is not

protected. Two types of anti-freeze may be used: ETHYLENE

GLYCOL, used in automobiles, has desirable properties, but is

toxic. Its use maybe prohibited when system water/glyco

solution is in contact with a potable water vessel (as an

indirect hot water heater with built-in heating coils). PROPY-

LENE GLYCOL is used in the quick-freeze food industry; it is

practically non-toxic. Its use maybe permitted when system

solution is in contact with a potable water vessel. When anti-

freeze must be used, inhibited propylene glycol is recom-

mended. Useful information on the characteristics, mixing

proportions, etc. of glycol in heating systems is given in

Technical Topics No. 2A, available from the Hydronics Institute,

34 Russo Place, Berkeley Heights, NJ 07922. Consult glycol

manufacturers for sources of propylene glycol.

8. Water Treatment

A good water treatment program will not only extend the use-

ful life of this boiler but it will also save much of the time and

expense of repairs made necessary by preventable occur-

rences. A reputable water treatment company should be con-

sulted to evaluate and determine the best overall treatment

program for your boiler equipment.

PIPING A HEATING - COOLING SYSTEM TO A WATER

BOILER AND CHILLER

Figure 18 illustrates a method of piping a heating-cooling system

to a water boiler and a chiller. Hand valves (shown) or automatic

valves must be installed to prevent circulation of chilled water in

the boiler or hot water in the chiller.

The air control system and pressure control system must operate

with chiller only, or the boiler only, being valved to the piping sys-

tem. Separate control devices on the boiler and chiller may be

used, or a single set of air and pressure controls on the common

piping may be preferred.

If the boiler is used to supply hot water to heating coils in air han-

dling units, flow control valves or other devices must be installed

to prevent gravity circulation of water in the coils during the cool-

ing cycle.

OPERATING INSTRUCTIONS

I. Filling and Venting Water Systems

A. Fill the system with water. Vent or purge of air.

Fire the boiler as soon as possible (see following warning

and instructions) and bring water temperature in the system.

C. Vent air and add water as needed to achieve operating

pressure on boiler gauge. Pressure must be between

approximately 12 psi (cold water) and 25 psi at water tem-

perature setting of high limit control, for boilers equipped

with 30 psi relief valves. Boilers rated for a higher pressure

and equipped with a matching relief valve may operate at

a higher pressure, but no higher than 5 psi below the relief

valve opening pressure.

D. Check for and repair any leaks before placing system in

service.

BEFORE FIRING BOILER, make these checks:

1. System is full of water. Air is vented or purged.

2. Relief valve is installed in accordance with ASME Boiler

and Pressure Vessel Code, Section IV. Valve opening is

not closed or reduced in size.

3. Venting is installed according to instructions under “FLUE

GAS VENTING REQUIREMENTS”.

All wiring is completed, following applicable wiring diagrams.

5. Using soap solution, check for gas leaks in all gas pip-

ing from meter to boiler pilot and manifold. DO NOT

use open flame.

Figure 18. Cooling system to a water boiler and chiller.

Model Pounds Gallons

VSPH-60 24.75 3.0

VSPH-90 32.00 3.8

VSPH-120 39.25 4.7

VSPH-150 46.50 5.6

VSPH-180 53.75 6.4

Boiler Water Content

1 2 ... 16 17 18 19 20 21 22 23 24 25 26 ... 29 30

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