Part Number 550-110-639/0512
10
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EGH Gas-firEd boilErs — sEriEs 4 — boilEr manual
Installation of optional indirect
water heater
1. For a boiler ordered with internal type indirect water
heater, remove heater opening cover plate (water boil-
ers–roundplateonleftside;steamboilers–rectan-
gular plate on front).
2. Install heater(s) as shown on page 18. Do not over
tighten studs and nuts - damage to the gasket can occur.
Hydrostatic pressure test
Pressure test before attaching gas piping or electrical
supply.
1. Plug any necessary boiler tappings or openings.
2. Do not use gauge supplied with boiler for pressure
testing. Install gauge with appropriate range.
3. Fillboilerwithwater.Ventallair.Teststeamboilers
between 45 - 55 psi. Test water boilers at 1-1/2 times
maximum working pressure.
Do not leave boiler unattended. A cold water
fill could expand and cause excessive pressure,
resulting in severe personal injury, death or
substantial property damage.
4. Verifygaugepressureismaintained.Checkforleaks.
Repair if found.
Leaks must be repaired at once. Failure to do
so can cause boiler damage, resulting in sub-
stantial property damage.
Do not use petroleum-based sealing com-
pounds in boiler system. Severe damage to
boiler will result, causing substantial property
damage.
5. Drain boiler and repair leaks if found.
6. Retest boiler after repairing leaks.
7. Remove plugs from any tappings that will be used for
controls and accessories. Refer to Table 4 and Figure 5.
8. On initial start-up check for leaks in the system piping.
If found, repair at once.
Figure 5 Boiler tappings (see Table 4)
Table 4 Control tapping (see Figure 5)
Prepare the boiler (continued)
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