AERCO Packaged WaterWizard Steam-to-Water Heater - Manual (Page 40)

HE-110
1B+ II Water Wizard Water Heaters
OMM-0063_0C Installation, Operation & Maintenance Manual
Page 40 of 50
MC2: 07/26/13 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, New York 10913 • Phone: 800-526-0288
12.2. SUB-COOLING COIL INSTALLATION
Install the Sub-cooling Coil as follows:
12.3. STEAM COIL INSTALLATION
Install the Steam Coil as follows:
Sub-cooling Coil Installation Instructions
1) For Wizard Sub-cooling Coil, align the Union Nuts with the two Spuds on the Condensate
Riser.
2) Hand thread the Unions Nuts down to the seating surface.
3) Position the Coil to a level position.
4) Using the 75 ft/lb torque wrench, tighten the Union Nuts.
5) If the Union Nuts do not seat properly, remove the Sub-cooling Coil and re-clean all surfaces
and threads on the Riser Spuds.
Steam Coil Installation Instructions
1) While holding the Steam Coil horizontally with the Union Nuts facing the Riser Spuds, hand
thread the Steam Union Nuts onto the Spud. (Figure 7).
2) Hand thread the Condensate Union Nut onto the Spud.
3) Position the Coil horizontally.
4) Using a Carpenter’s Square, check the vertical alignment to ensure that the Coil is installed
inside the perimeter of the Shell. It is important that all coils in the bundle line up vertically
and are positioned to ensure that they will not rub against the Liner of the Heater Shell.
5) If needed, use the appropriate Short-Length wrench to tighten the Union Nuts to a seating
condition.
6) Insert the Coil Retaining tool through the first lower section of the Coil tubing. (Figure 8).
7) Using a Torque Wrench set for 75 ft-lbs, insert the wrench in the proper torque direction on
the Union Nut (Figure 8).
8) Apply pressure to the Coil Retaining tool in the opposite direction of the pressure being
applied to the Torque Wrench and tighten the Union Nut.
9) When the Torque Wrench setting “clicks”, remove the Coil Retaining Tool.
10) Slowly reapply the pressure to the Torque Wrench holding the Coil by hand until the setting
“clicks”. If the Coil rotates during this operation, reinsert the Coil Retaining Tool and carefully
apply a little more torque.
11) Once again, reapply the pressure to the Torque Wrench without holding the Coil until the
setting “clicks”.
12) Repeat step 11 until the Torque Wrench setting “clicks” without rotating the Union Nut or
twisting the Coil.
13) Using the Coil Spacing Tool, perform a final spacing check of the Coil tubing by creating
uniformed gaps between the Coil tubes (see Figure 4). Check for spacing between the Box
Header and Return Bend. If the Return Bend is touching the Box Header, use the Coil
Spacing Tool to separate the two components. Check for spacing between the Coil tubes
above and below the Box Header. Create clearance using the Coil Spacing Tool.
14) Recheck all Union Nuts for the 75 ft/lbs setting without holding the Coil.
15) If a Union Nut or Coil rotates during this step, repeat steps 10 and 11.