39
240012994 Rev. B [08/31/2020]
FIGURE 9-1 Condensate Drain Assembly
Model 205 shown (location similar in all sizes)
Pour
approximately
1 cup of water
into ue way of
boiler.
9 - START UP PROCEDURE
9.3 Fill Condensate Trap with Water
WARNING
Asphyxiation hazard! Fill condensate trap before
starting boiler to avoid combustion products escaping
boiler. Failure to follow these instructions could result
in death or serious injury.
!
• To ll the condensate trap pour water into exhaust vent
until water begins to ow through the siphon.
• Visually inspect the siphon to ensure it is full with clean
water.
• During operation check condensate (trap) to ensure it
draining properly.
Note
Condensate trap must be manually lled with water
at initial start up.
Condensate Drain
• Boiler is tted with automatic air vent positioned on pump
Vent and is tted with adjustable sealing cap. See Figure
9-1.
• Open central heating ow and return valves. Spindle is at
in-line with valve.
• Open ll point valve on lling system until water begins to
ow. To aid venting boiler drain may be open until water
ows out. Close drain as soon as water appears.
• During initial system air purge open valve connected to
top left of heat exchanger, see gure 9-1. Open 4 full
turns counter clockwise until steady stream of water is
witnessed. Close fully by turning clockwise with no tools
required.
• Systems using radiators to remove air - Vent each radiator
in turn, starting with lowest in the system.
• It is IMPORTANT the pump is properly vented to avoid
running it dry and damaging its bearings. Unscrew and
remove cap from center of pump. Use screwdriver. Rotate
exposed spindle about half turn, replace cap.
• Check operation of heating pressure relief valve. Pull lever
on top of valve upwards lifting the seat. This will allow
water to escape from system. Check water is escaping
from the system.
• Open cold water supply inlet valve. Turn on all hot water
taps. Allow water to ow until no air is present. Turn
o taps. See page 4- Physical Data and section 2.7
Operational Features.
9.2 System Start Up
Follow all codes and regulations when lling the boiler.
Use drain taps to allow system to completely drain.
Thoroughly ush the heating system before boiler is connected
and again after rst heating season.
Air Vent
HTEX Air Vent
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