IM 178 / Page 3
Introduction
This manual provides general information about the “C”
vintage McQuay RoofPak applied rooftop unit, Model RDS.
In addition to an overall description of the unit, it includes
mechanical and electrical installation procedures, commis-
sioning procedures, sequence of operation information, and
maintenance instructions. For further information on the
optional forced draft gas-fired furnace, refer to Bulletin No.
IM 684 or 685.
The MicroTech applied rooftop unit controller is available
on “C” vintage applied rooftop units. For a detailed descrip-
tion of the MicroTech components, input/output configura-
tions, field wiring options and requirements, and service
procedures, refer to Bulletin No. 483, “MicroTech Applied
Rooftop Unit Controller.” For a description of operation and
information on using and programming the MicroTech unit
controller, refer to the appropriate operation manual (see
Table 1).
Table 1. Applied rooftop unit operation manual literature
ROOFTOP UNIT
OPERATION MANUAL
CONTROL CONFIGURATION
BULLETIN NO.
Variable Air Volume (VAV)
OM 108
Constant Air Volume, Zone
Temperature Control (CAV-ZTC)
OM 109
Constant Air Volume, Discharge
Temperature Control (CAV-DTC)
OM 110
When the equipment is received, all items should be carefully
checked against the bill of lading to be sure all crates and
cartons have been received. If the unit has become dirty
during shipment (winter road chemicals are of particular
concern), it should be cleaned off when received. All units
should be carefully inspected for damage when received. If
any damage is noticed, the carrier should make the proper
notation on the delivery receipt acknowledging the damage.
The carrier should also fill out a Carrier Inspection Report.
The McQuay International Traffic Department should then be
contacted at (612) 553-5330.
The unit nameplate should be checked to make sure the
voltage agrees with the power supply available.
Receiving Inspection
RoofPak
Draw-through/Blow-through Coil Section
Cabinet Size
800 = 4,000 to 16,000 cfm
802 = 8,000 to 20,000 cfm
Nomenclature
RDS - 800 C Y E
Heat Medium
A = Natural Gas
E = Electric
F = Fuel Oil
S = Steam
W = Hot Water
Y = None
Cooling Coil Size
L = Large Unit Coil
Y = Contractor Coil or None
Design Vintage
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