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T & P GAUGE
(NOT SHOWN)
INLET
HI-LIMIT
START-UP
Before Start-Up
Safe lighting and other performance criteria were met
with the gas manifold and control assembly provided
on the boiler when the boiler underwent tests specified
in the latest edition of ANSI Z21.13 Standard.
General
Before lighting up a new installation, water should be
flowing through the boiler. Regulator should be set to
minimum 12 PSI.
CAUTION: Propane gas is heavier than air and
sinks to the ground. Exercise extreme care in light-
ing boiler in confined areas.
Filling System - Heating
Boilers
Fill system with water. Purge all air from the system
using purge valve sequence. After system is purged of
air, lower system pressure. Open valves for normal
system operation. Fill system through feed pressure.
Manually open air vent on the compression tank until
water appears, then close vent.
Fig. 37: General Location of Controls
Ethylene Glycol Systems -
Heating Boilers
Fill through filler opening on the top on the Air-X Tank
to solution desired. Always maintain solution level in
sight glass.
NOTE: Raypak recommends the use of Ethylene
Glycol solution only.
Initial Start-Up - Pump and
Motor
Many pumps are now direct-drive. They have no cou-
pler or bearing assembly. These pumps do not require
lubrication. Others require SAE-30 non-detergent oil to
lubricate both the motor and the bearing assembly.
Check pump motor for type before attempting to oil.
Clean dust and lint from pump and motor. Check pump
coupler and tighten if necessary. Flush system before
putting into operation to ensure that foreign material
does not damage pump seals.
CAUTION: Pump must be off to check oil in bearing
assembly. Do not run pump without water in system.
25
MECHANICAL
MODULATING
GAS VALVES WITH
REGULATOR
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