Greenheck DG / DGX with Direct Spark (470652) User Manual

Page 6

Direct Spark Ignition Make-Up Air

7. Install Supply Unit

Use a crane and a set of spreader bars hooked to
the factory lifting lugs to lift and center the unit on the
extension/equipment support(s).

Use self-tapping sheet metal screws to fasten the unit
to the extension/equipment support(s).

NOTE

The use of all lifting lugs and a set of spreader bars is
mandatory when lifting unit.

NOTE

Some units come with the weatherhood attached and
Step 8 may not apply.

1. Locate Equipment Support(s)

Position equipment support(s)
on the roof (reference the
CAPS submittal for placement
of equipment support(s) in
relation to the unit). Verify that
all unit supports are level, shim
if necessary. Attach equipment
support to the roof, remove metal cover,
ﬂash to wooden nailer and reinstall cover.

2. Apply Sealant

Apply an appropriate sealant around the
airstream opening to create an airtight
seal.

Installing Supply Unit

Complete Combination Installation

8. Assemble and Attach Weatherhood

The weatherhood can now be assembled and/or
attached to the unit. Detailed assembly instructions
can be found with the weatherhood. If the optional
evaporative cooling module was selected, this step
does not apply, refer to the next section, Installation of
the Optional Evaporative Cooling Module.

9. Seal Weatherhood Seam

Using an appropriate sealant, seal the seam between
the weatherhood and the unit.

Installation of Evaporative Cooling
Module (optional)

NOTE

Small evaporative coolers ship attached to the base
unit and require no additional mounting.

NOTE

The use of all lifting lugs and a set of spreader bars
is mandatory when lifting the evaporative cooling
module.

NOTE

When mounting the evaporative cooler, it is important
that it is level to ensure proper operation and water
drainage.

Metal Cover

Equipment
Support

Equipment Support

3. Set Evaporative Cooling Module

Use a crane and a set of spreader bars hooked to the
factory lifting lugs
to lift and center
the module on
the equipment
support(s). The
ﬂange on the
evaporative cooler
should overlap the
ﬂange on the unit.

Placing Evaporative Module

Sealant

4. Secure Cooling Module to Unit

Use self-tapping screws to fasten
the cooling module to the base
unit along the top and down both
sides. Fasten at the top through
the ﬂanges. To fasten the sides,
the media must be removed. To
remove the media, ﬁrst remove the
access panel on the evaporative
module and disconnect the
evaporative pump(s). The media
will now slide out. With the media
removed, you can access the side fastening points inside
the evaporative module. With all the screws in place,
reinstall the media, reconnect the pumps and reinstall the
access panel.

Securing Evaporative

Module