Piping A Heating-Cooling System; Operating Instructions; Filling And Venting Water Systems; Initial Start - Slant/Fin Victory II VHS-60 Installation And Operating Instructions Manual

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Continued from Page 15
An automatic air vent is used to remove air from the sys -
tem. It should be installed in the top of the boiler as shown
in Figure 15. 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.
Boiler Water Content
Model kg
VHS-60 11.23
VHS-90 14.52
VHS-120 17.80
VHS-150 21.09
VHS-180 24.38
4. Cold Water Fill
Pressure reducing (fill) valve and shut-off valve should be
installed.
5. Relief Valve Discharge Piping
Use same size or larger piping than valve outlet. Must
terminate 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.
6. 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 may be prohibited
when system water/glycol solution is in contact with a
potable water vessel (as an indirect hot water heater with
built-in heating coils). PROPYLENE GLYCOL is used in
the quick-freeze food industry; it is practically non-toxic. Its
use may be permitted when system solution is in contact
with a potable water vessel. When anti-freeze must be
used, inhibited propylene glycol is recommended. 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.
7. Water Treatment
A good water treatment program will not only extend the
useful life of this boiler but it will also save much of the
time and expense of repairs made necessary by
preventable occurrences. A reputable water treatment
company should be consulted to evaluate and determine
the best overall treatment program for your boiler
equipment.
RADIANT FLOOR, LOW WATER TEMPERATURE AND
LARGE WATER VOLUME SYSTEMS
A boiler by-pass loop, three way valve arrangement, primary
secondary pumping (with a boiler loop) or other acceptable
method, must be used to provide a minimum 130˚ return
water temperature to the boiler. This will prevent condensa-
tion on the cast-iron sections that can result in poor combus-
tion and damage to the boiler.
Pounds L. U.S. Gal.
24.75 11.4 3.0
32.00 14.4 3.8
39.25 17.8 4.7
46.50 21.2 5.6
53.75 24.2 6.4
PIPING A HEATING - COOLING SYSTEM TO A WATER
BOILER AND CHILLER
Figure 16 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 system. 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
handling units, flow control valves or other devices must be
installed to prevent gravity circulation of water in the coils
during the cooling cycle.
Figure 16.
OPERATING INSTRUCTIONS, BASIC

1. Filling and Venting Water Systems

A. Fill the system with water. Vent or purge of air.
B. Fire the boiler as soon as possible (see the following
warning and instructions) and raise the 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 83 kPa (12 psi) (cold water) and 172 kPa
(25 psi) at water temperature setting of high limit
control, for boilers equipped with 207 kPa (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 34 kPa (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".
4. All wiring is completed, following applicable wiring
diagrams.
5. Using soap solution, check for gas leaks in all gas
piping from meter to boiler pilot and manifold. DO NOT
use open flame.

2. Initial Start

Safe lighting and other performance criteria were met
when testing various gas manifold and control assemblies
used on the Victory II Series Boilers under the ANSI
Z21.13- latest edition or CSA B 149.1 latest edition for
natural gas and propane.
VICTORY II
VHS MODELS