Installation manual

IM-487 Page 3
Introduction
This manual provides general information about the "C" vin-
tage McQuay RoofPak® applied rooftop unit, models RAH,
and RDT. In addition to an overall description of the unit, it
includes mechanical and electrical installation procedures,
commissioning procedures, sequence of operation informa-
tion, and maintenance instructions. For further information
on the optional forced draft gas-fired furnace, refer to Bulle-
tin No. IM 684 or IM 685.
The MicroTech II ™ applied rooftop unit controller is avail-
able on "C" vintage applied rooftop units. For a detailed
description of the MicroTech II components, input/output
configurations, field wiring options and requirements, and
service procedures, refer to IM696 for a description of opera-
tion and information on using and programming the Micro-
Tech II unit controller, refer to the appropriate operation
manual (See Table 1).
For a description of operation and information on using the
keypad to view data and set parameters, refer to the appropri-
ate program-specific operation manual. (See Table 1).
Table 1: Program Specific Rooftop Unit Operation Literature
Receiving Inspection
When the equipment is received, check all items 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), clean it
when received.
Inspect all units for damage when received. Report all ship-
ping damage to the carrier and file a claim. In most cases,
equipment is shipped F.O.B. factory and claims for freight
damage should be filed by the receiver.
The unit nameplate should be checked before unloading the
unit to make sure the voltage complies with the power supply
available.
Hazard Identification Information
Nomenclature
Rooftop Unit
Control Configuration
Operation Manual
Bulletin Number
VFD’s Vendor IM Manuals
Discharge Air Control (VAV or CAV) OM 137
Space Comfort Control
(CAV-Zone Temperature Control)
OM 138
WARNING
Warnings are provided throughout this manual to indicate
to installing contractors, operators, and service personnel
potentially hazardous situations which, if not avoided,
can result in severe personal injury or property damage.
CAUTION
Cautions are provided throughout this manual to indicate
to installing contractors, operators, and service personnel
potentially hazardous situations which, if not avoided,
can result in personal injury or equipment damage.
R AH — 047 C S E
RoofPak
Unit Size
RDS 800 = 4000 - 16000 CFM
RDS 802 = 8000 - 20000 CFM
RAH 47 = 12000 - 30000 CFM
RAH 77 = 23000 - 50000 CFM
Heat Medium
A = Natural Gas
E = Electric
F = Fuel Oil
S = Steam
W = Hot Water
Y = None
Design Vintage
Cooling Coil Size
S = Standard (Low Airflow)
L = Large (High Airflow)
Y = None or Contractor Coil