Table of Contents
Advertisement
I I n n s s t t a a l l l l a a t t i i o o n n
General Installation
Requirements
The checklist below is a summary of the steps required
to successfully install a Commercial rooftop unit. This
checklist is intended to acquaint the installing
personnel with what is required in the installation
process. It does not replace the detailed instructions
called out in the applicable sections of this manual.
☐ Complete
"Unit Inspection," p. 24
☐ Verify that the installation location of the unit will
provide the required clearance for proper
operation.
☐ Assemble and install the roof curb. Refer to the
current edition of the roof curb installer's guide.
☐ Fabricate and install ductwork; secure ductwork to
curb. Seal the corners of duct adapters as shown
below. Ducting attached to the unit should be self
supporting. Do not use the unit to support the
weight of the ducting.
☐ Install pitch pocket for power supply through
building roof. (If applicable).
Figure 43. Sealed ductwork
Note: Customer to seal duct
adapter corners as shown
Rigging the Unit
☐ Set the unit onto the curb; check for levelness.
☐ Ensure unit-to-curb seal is tight and without buckles
or cracks.
☐ Install and connect condensate drain lines to each
evaporator drain connection.
60
checklist.
☐ Remove the shipping hardware from each
compressor assembly.
☐ Remove the shipping hold-down bolts and shipping
channels from the supply and exhaust fans with
spring isolators.
☐ Check all supply and exhaust fan spring isolators
for proper adjustment.
☐ Verify all discharge line service valves (one per
circuit) are back seated.
Main Electrical Power
☐ Verify that the power supply complies with the unit
nameplate specifications. Refer to Main Unit Power
Wiring in the Installation chapter.
☐ Inspect all control panel components; tighten any
loose connections.
☐ Connect properly sized and protected power supply
wiring to a field-supplied/installed disconnect and
unit
☐ Properly ground the unit.
☐ All field-installed wiring must comply with NEC and
applicable local codes.
Field Installed Control Wiring
☐ Complete the field wiring connections for the
constant volume controls as applicable.
☐ Complete the field wiring connections for the
variable air volume controls as applicable.
N N o o t t e e : : All field-installed wiring must comply with NEC
and applicable local codes.
Electric Heat Units
☐ Verify that the power supply complies with the
electric heater specifications on the unit and heater
nameplate.
☐ Inspect the heater junction box and control panel;
tighten any loose connections.
☐ Check electric heat circuits for continuity.
Gas Heat
☐ Gas supply line properly sized and connected to the
unit gas train.
☐ All gas piping joints properly sealed.
☐ Drip leg installed in the gas piping near the unit.
☐ Gas piping leak checked with a soap solution. If
piping connections to the unit are complete, do not
pressurize piping in excess of 0.50 psig or 14 inches
w.c. to prevent component failure.
☐ Main supply gas pressure adequate.
☐ Flue Tubes clear of any obstructions.
☐ Factory-supplied flue assembly installed on the
unit.
RT-SVX24Q-EN
Hide quick links:
Advertisement
Table of Contents
