10
INLET AND OUTLET DAMPERS INSTALLATION
1. Install actuator per manufacturer's instructions.
2. Adjust damper shafts outward to extend past any obstacles
that might cause interference. Do not adjust inward end of
shaft within a distance of 2 inches of bronze bushing.
3. Position inlet damper and outlet damper to coincide with cur
-
rent or intended position of actuator arm, depending on actua
-
tor's position (opened/closed). Note rotation direction of each
damper.
4. Install crank arms to each damper shaft approximately
parallel to each other while maintaining state/position of
dampers. (See Fig. 15.) Check for range of motion clearances
before tightening.
Fig. 15 —
Install Crank
5. Install swivels to crank arms and hand tighten. (See Fig. 16.)
Fig. 16 —
Install Swivels
6. Insert 5/16 in. damper rod through mounting hole of each
swivel. (See Fig. 17.) Position shaft to ensure there is not
interference at any point during travel. Tighten rod clamp of
swivel onto each damper rod.
Fig. 17 —
Install Damper
7. Confirm correct operation of dampers. Adjust as needed.
Tighten remaining fasteners.
Step 3 — Connect Cooling/Heating Piping
Thoroughly review submittals and product literature detailing unit
operation, controls, and connections BEFORE beginning the
connection of the various cooling and/or heating mediums to the
unit. The supply and return connections are marked with a
“HS/CS” meaning Hot/Cold water Supply or inlet and “HR/CR”
meaning Hot/Cold water Return or outlet indicating fluid flow
direction into and from the coil. Refer to Fig. 18-25 and Tables 2
and 3 for details and Direct Expansion (DX) coils marking and
piping locations.
See Detail A
Detail A
CAUTION
Residue and loose particles resulting from manufacturing and
field piping techniques such as joint compounds, soldering
flux, and metal shavings may be present in the unit and the
piping system. This may cause damage to the unit. Ensure sys
-
tem cleanliness when connecting to solar, domestic or potable
water systems.
