Quick Reference Guide

UH-TS-1 10
A Complete Line of Gas Heating Products
Indirect Fired
Single, Double and Triple Furnace
Rooftops - Arrangements B-L
Model GRAA/GRBA/GRCA/GRDA
Trane rooftop heating units are
designed for applications requiring
heating, cooling, ventilating and
make-up air. Unit sizes range from
800-14,000 CFM with gas inputs of
100-1200 Mbh. Units are ETL and CSA
certified for electrical safety in
compliance with UL-1995 Standard for
HVAC equipment.
Units are available in eight different
arrangements: heating only, heating
with DX, chilled water or evaporative
cooling with horizontal discharge or
downflow supply. All units are
completely packaged, rail mounted,
wired, piped, waterproofed and test
fired to assure a smooth installation
and easy start-up.
Single Furnace - Arrangement B-L
GRAA/GRBA/GRCA/GRDA 10 15 20 25 30 35 40
Input MBh 100.0 150.0 200.0 250.0 300.0 350.0 400.0
Output MBh 80.0 120.0 160.0 200.0 240.0 280.0 320.0
Max CFM 800-3800 1200-4500 1600-7400 2000-7500 3700-11000 2800-13000 3200-14000
Max Temperature Rise F90909090909090
Min. Temperature Rise F20202020202020
Double Furnace - Arrangement B-L
GRAA/GRBA 50 60 70 80
Input MBh 500.0 600.0 700.0 800.0
Output MBh 400.0 480.0 560.0 640.0
Max CFM 3000-7500 3700-11000 4500-13000 5000-13500
Max Temperature Rise F 120 120 120 120
Min. Temperature Rise F 40 40 40 40
Triple Furnace - Arrangement G,J
GRAA/GRBA 12
Input MBh 1200.0
Output MBh 960.0
Max CFM 5500-13000
Max Temperature Rise F 180
Min. Temperature Rise F 60