U.S. Range Summit Series, Installation, Operation And Maintenance Manual

Part Number 1955202   rev 5   4/15

9

D.  Assemble the stacking pipes provided in the stacking 

kit as shown in diagram. This allows both ovens 
to be supplied by a single gas line. The minimum 
recommended size of the a single supply line for two 
stacked ovens is 1 inch (25mm). Use a pipe thread 
compound that is intended for use on propane gas 
piping and be  sure to check for leaks before fi nalizing the 
installation.

3/4" Union

3" Nipple

3" Nipple

90 Degree Street Elbow

90 Degree Street Elbow

20-1/2" Nipple

3/4" to 1" Bell Reducer

E.  Check leveling of unit four (4) ways (using a common 

carpenter’s level on the rack inside the oven).

F.  Plug the cord set of each unit into a 115-Volt power 

supply outlet.

G.  Maintain clearance from combustibles.

CAUTION:  Disconnect Both Unites from Electrical Supply 
Before Servicing.

Gas Supply

The importance of the proper installation of commercial 
Gas cooking Equipment cannot be over stressed. Proper 
performance of the equipment is dependent, in great part, 
on the compliance of the installation with the manufacturer’s 
specifi cations. Installation must conform to local codes or, in 
the absence of local codes, with the National Fuel code, ANSI 
Z223.1, Natural Gas Installation code, CAN/CGA-B149.1 or the 
Propane Installation Code, CAN/CGA-B149.2, as applicable.

Before assembly and connection, check gas supply.

A.  The type of gas for which the unit is equipped is stamped 

on the data plate located on the lower rear of the left side  
panel. Connect a unit stamped “NAT” only to natural gas; 
connect a unit stamped “PRO” only to propane gas.

B.  If it is a new installation, have gas authorities check meter 

size and piping to assure that the unit is supplied with 
suffi

  cient amount of gas pressure required to operate the 

unit.

C.  If it is additional or replacement equipment, have gas 

authorities check pressure to make certain that existing 
meter and piping will supply fuel at the unit with not 
more than 1/2” water column pressure drop.

NOTE:   When checking pressure be sure that all other 
equipment on the same gas line is on. An internal pressure 
regulator is supplied with U.S. Range Convection Ovens. 
Regulator is preset to deliver gas at pressure shown on the 
rating plate.

The appliance and its individual shut-off  valve must be 
disconnected from the gas supply piping system during any 
pressure testing of that system at test pressures in excess of 
1/2 PSI (3.45kPa.).

The appliance must be isolated from the gas supply piping 
system by closing its individual manual  shut-off  valve during 
any pressure testing of the gas supply piping system at test 
pressures equal to or less than 1/2 PSI (3.45 kPa).

NOTE:  Adequate clearance must be provided for servicing 
and proper operation.

Gas Connections

The 1” NPT inlet at the rear must be considered in piping the 
gas supply for double stack units or 3/4” NPT for individual 
(or single deck) connections. Undersized gas supply line(s) 
may restrict the gas supply and aff ect performance. If other 
gas appliances are supplied by the same supply line, the 
supply line must be sized to carry the combined volume 
without causing more than 1/2” pressure drop at the 
manifold of each appliance on the line at full rate.

Recommended supply pressures are 7” WC, (NAT), and 11” 
WC, (PRO); ± 5%. (Must not exceed 13.8” WC[NAT], and 15” 
WC[PRO]).

INSTALLATION Continued