Specifications

COMBITHERM CT PROFORMANCE AND CT CLASSIC SERIES • INSTALLATION MANUAL • MN-35947 • 41.
INSTALLATION
GAS SUPPLY & INSTALLATION
The Alto-Shaam gas Combitherm has been set
to operate with either natural gas or propane as
indicated on the identification name plate. Make
certain the gas supply matches the nameplate
information. Should conversion to the opposite
fuel be desired, conversion parts must be ordered
from the factory. Conversion must be completed by
a qualified service person only. 

Residential gas connections and hard-piped gas
connections DO NOT meet NSF certifications.
GAS SPECIFICATIONS
 
CTP6-10G 48,000 Btu/hr. 48,000 Btu/hr.
CTP10-10G 80,000 Btu/hr. 80,0000 Btu/hr.
CTP7-20G 98,000 Btu/hr. 98,000 Btu/hr.
CTP10-20G 133,000 Btu/hr. 133,000 Btu/hr.
CTP20-10G 160,000 Btu/hr. 160,000 Btu/hr.
CTP20-20G 266,000 Btu/hr. 266,000 Btu/hr.
CTC6-10G 43,000 Btu/hr. 43,000 Btu/hr.
CTC10-10G 70,000 Btu/hr. 70,000 Btu/hr.
CTC7-20G 85,000 Btu/hr. 85,000 Btu/hr.
CTC10-20G 121,000 Btu/hr. 121,000 Btu/hr.
CTC20-10G 140,000 Btu/hr. 140,000 Btu/hr.
CTC20-20G 242,000 Btu/hr. 242,000 Btu/hr.
INSTALLATION REQUIREMENTS
GAS CONNECTION: 3/ 4" NPT

CHECK PLUMBING CODES FOR PROPER SUPPLY LINE
SIZING TO ATTAIN PRESSURES LISTED BELOW.
NATURAL GAS: 3.5" W.C.
PROPANE GAS: 5.6" W.C.
MAXIMUM INLET PRESSURE: 14" W.C.
NOTE:
If a flexible gas line is used, it must be AGA
approved, commercial type and at least 3/4" I.D.
HOOD INSTALLATION IS REQUIRED
After installation, burner and gas valve should be checked and
adjusted by a qualified Alto-Shaam technician. GAS VALVE
MAY REQUIRE FIELD ADJUSTMENT ABOVE
2,000' (610m) AND IS NOT ADJUSTED AT THE FACTORY.
GAS PRESSURE CHART
The oven has been factory adjusted according to
the gas type specified on the identification name
plate. Building inlet pressure requirements are
listed below.
TECHNICAL SPECIFICATIONS
Natural Gas
Min. Connected Pressure 5.5" W.C. 1.12 kPa
Max. Connected Pressure 14.0" W.C. 3.5 kPa
Propane Gas
Min. Connected Pressure 9.0" W.C. 1.99 kPa
Max. Connected Pressure 14.0" W.C. 3.5 kPa
DANGER
CONNECTING TO THE WRONG GAS
SUPPLY COULD RESULT IN FIRE OR
AN EXPLOSION CAUSING SEVERE
INJURY AND PROPERTY DAMAGE.
WARNING
TO AVOID SERIOUS PERSONAL
INJURY, installation of this appliance
must conform to local, state, and
national codes; the current edition
of the American National Standard
Z223.1, National Fuel Gas Code, and
all local municipal building codes.
In Canada, installation must be in
accordance with Standard CAN/CSA
B 149.1 and Installation Codes - Gas
Burning Appliances, and local codes.
DANGER
DISCONNECT UNIT FROM
POWER SOURCE BEFORE
CLEANING OR SERVICING.