Notice – Dunkirk Helix VX Vertical Laser Tube Wall Hung Stainless Steel Modulating Condensing Boiler User Manual

Page 36

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36

9.1 Fill Boiler With Water And Purge Air

NOTICE

To maintain boiler efficiency and prevent boiling

inside the heat exchanger, flush entire heating

system until clean.

• Flush heating system, including all heating zones.
• Fill boiler with potable water.
• Fill boiler and system piping with water (or

antifreeze-water solution, if used). See antifreeze

information page 13. Purge air from boiler using

safety relief valve. Purge air from system piping.

• Inspect system piping and boiler connections.

Repair any leaks immediately.

• Activate all heating zones and calls for heat,

including CH calls and DHW calls (if available).

• Close manual gas shut off valve. Let system run for

30 minutes. When boiler goes into lockout, reset

boiler by pressing "Reset" button until boiler resets.

• Do not open gas shutoff valve until all air is purged

from system.

9.2 Fill Condensate Trap with Water

• Remove spring tension clip from clear hose attached to

barbed fitting at bottom of boiler chassis. See figure

9-1.

• Disconnect hose from barbed fitting.
• Remove barbed fitting from boiler.
• Attach supplied condensate trap to barbed fitting using

pipe tape.

• Fill trap through fitting with approximately 2 cup (473

ml) water.

• Place barbed fitting back through bottom of chassis.
• Reassemble clear tube to barbed fitting.
• Secure tube to barbed fitting with spring tension clip.

See figure 9-1.

FIGURE 9-1 Condensate Drain Assembly

NOTICE

IMPORTANT: Condensate trap must be manually

filled with water at initial start up.

9 - START UP PROCEDURE

Condensate

Collector

Remove Spring

Tension Clip

Remove Hose

Barb

Attach Supplied

Condensate Trap

to Hose Barb

Secure Hose onto

Hose Barb with

Spring Tension

Clip

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