Slant/Fin Victory VSPH series User Manual page 21

VICTORY VSPH Models
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 ter-
minate 152 mm (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 sys-
tems to protect against freeze-up in the event of power
failure or control shutdown when the building is unoccu-
pied. 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 auto-
mobiles, has desirable properties, but is toxic. Its use
maybe 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 sys-
tem solution is in contact with a potable water vessel.
When anti-freeze must be used, inhibited propylene glycol
is recommended. Useful information on the characteris-
tics, 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 propy-
lene glycol.
8. 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 pre-
ventable occurrences. A reputable water treatment com-
pany should be consulted 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 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 18. Cooling system to a water boiler and chiller.
OPERATING INSTRUCTIONS
I. 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 following
warning and instructions) and bring water up to
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 Boil-
er and Pressure Vessel Code, Section IV. Valve open-
ing 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 dia-
grams.
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.
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