Garland GPD Series, Installation And Operation Manual

Document #:  G_GO_OM_PYRODECK_4606131 – 12/20

Page 5

INSTALLATION

1.  Damage Check: check carton or crate for possible 

damage incurred in shipping. After carefully uncrating, 

check for “concealed” damage. Report any damage 

immediately to your carrier.

2.  The correct type of gas for which the unit was 

manufactured is noted on the rating plate, and this type 

of gas must be used.

3.  The gas pressure must be checked when the unit is 

installed, to ensure that the unit gas pressure is the same 

as specified on the rating plate. If necessary pressure 

adjustments can be made at the pressure regulator, 

supplied on each unit.

4.  Have a qualified gas technician check the gas pressure 

to make certain that existing gas facilities (meter, piping, 

etc.) will deliver the BTU’s of gas required at the unit with 

no more than ½” water column pressure drop. When 

checking pressure, be certain that all the equipment on 

same gas line is turned to the “ON” position.

5.  Make certain that the new piping, joints and connections 

have been made in a clean manner and have been 

purged, so that the piping compound, chips, etc will not 

clog pilots, valves and / or controls. Use pipe joint sealant 

that is certified for use with LP gas.

6. 

WARNING

;  check gas connections for leaks, using soap 

solution or similar means. DO NOT CHECK WITH AN OPEN 

FLAME.

Rating Plate 

All burner-input ratings are shown on the serial plate located 

on the right side panel of the appliance.

When corresponding with the factory or your local 

authorized factory service center regarding service problems 

or replacement parts, be sure to refer to the particular unit 

by the correct model number (including the prefix and suffix 

letters and numbers) and the warranty serial number. The 

rating plate affixed to the unit contains this information.

We suggest installation, maintenance and repairs should be 

performed by your local authorized service agency listed in 

your information manual pamphlet.

In the event you have any questions concerning the 

installation, use, care or service of the product, write or call 

our Product Service Department.

This product must be installed by professional personnel as 

specified. Garland products are not approved or authorized 

for home or residential use, but are intended for commercial 

applications only. Garland will not provide service, 

warranty, maintenance or support of any kind other than in 

commercial applications.

Gas Connections

The inlet manifold size for connection to the main gas supply 

is (1) 3/4”NPT inlet for each deck.

The importance of 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 

specifications. Installation must conform to local codes 

and with the National Fuel Gas Code NFPA 54/ANSI Z223.1, 

Natural Gas Installation Code CAN/CGA-B149.1, or the 

Propane Installation Code CAN/CGA-B149.2, as applicable, 

including:

1.  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 (3.45 kPa).

2.  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)

Before assembly and making gas connections, check gas 

supply.

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

on the data plate located behind lower front panel. 

Connect a unit stamped “NAT” only to natural gas; 

connect those 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 a 

sufficient amount of gas pressure 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 ½” water column pressure drop.

NOTE: When checking pressure be sure that all other 

equipment on the same gas line is on. A pressure regulator is 

supplied with GARLAND Pizza Ovens. The regulator is preset 

to deliver gas at the pressure shown on the rating plate.