EmberGlo Models 41 - Manual (Page 4)

4
EmberGlo A Division of Midco International Inc 8448 24
Models 25, 31 and 41 - Installation
Use pipe joint compound resistant to Liquefi ed Petroleum Gases. Check the broiler piping and
valves for gas leaks by applying a weak liquid soap solution to unions and joints with the gas supply
on. Leakage will be indicated by the appearance of soap bubbles. Locate and correct all gas leaks
before proceeding.
WARNING: DO NOT USE OPEN FLAME.
During any pressure testing of the gas supply piping system at test pressures equal to or less
than 1/2 psi (3.45 ka), the Broiler must be isolated from the gas supply piping system by closing its
individual Main Manual Shut-Off Valve.
During any pressure testing of the gas supply piping system at test pressures in excess of 1/2 psi
(3.45 ka), the Broiler and its individual Main Manual Shut-Off Valve must be disconnected from that
system.
WARNING: EXPLOSION HAZARD. DO NOT USE OXYGEN FOR PRESSURE TESTING.
AN EXPLOSION COULD OCCUR DURING INITIAL START-UP
Manifold pressure taps are supplied for testing operating pressures and setting gas input. On
Model 25, the tap is located in the main manifold piping directly behind the Manual Burner Valve. On
Models 31 and 41, it is located in the pilot line behind the Manual Pilot Valve.
Each burner tip has been individually orifi ced for the correct gas input for NATURAL or PROPANE
gas.
BROILER MODEL 25C/25F 31C/31F 41C/41F
Number of burner tips 6 8 10
Capacity/Tip (BTU/Hr) 6,600 8,500 8,500
Max. BTU/Hr Input 39,600 68,000 85,000
NAT Gas Orifi ce Size #56 #54 #54
Manifold Pressure 4″ W.C. 4″ W.C. 4″ W.C.
PROP Gas Orifi ce Size #68 #65 #65
Manifold Pressure 10″ W.C. 10″ W.C. 10″ W.C.
Table 2 - BTU Capacity, Orifi ce Size and Manifold Pressure
USE OF PROPANE FOR GAS BROILERS
Model BTU/Hr LB of Propane Cylinder Hours of Use
Used/Hour Size Full On (approx.)
25* 39,000 0.48 lb 20# 9 Hr
40# 19 Hr
100# 48 Hr
31** 68,000 0.28 lb 40# 11 Hr
100# 28 Hr
41*** 85,000 0.22 lb 100# 22 Hr
Minimum size Cylinder: * Model 25 - 20# / ** Model 31 - 40# / *** Model 41 - 100#
Table 3 - Propane per Hour Usage
Ventilation: A suitable power or gravity ventilating system must be used in conjunction with the
EmberGlo Open Hearth Broiler.
Power Types: Either of the two types of power ventilators - the overhead hood type or under shelf
exhaust type - may be used. The latter offers simplicity of installation and minimum cleaning expense.
Both require fl ame-proof fi lters for grease removal. Connect the ventilator to a duct of suitable size.
The exhaust blower must be capable of removing a minimum of 325 CFM of air per square ft. of
broiler surface; specifi cally: a fan capacity of 2,000 CFM is required for the Model 41, 1400 CFM for
the Model 31, and 775 CFM for the Model 25.
Gravity Types: Since no power exhaust is used, the gravity ventilating system is adequate only in
certain conditions. It is only practical in single story buildings not surrounded by higher structures. A
large straight duct, equal to a minimum of half the grill area, must be carried upward from a hood over
the broiler to a height of four feet above the highest point of the roof. It should be equipped with a
rotary outlet. The hood must extend at least 12 inches beyond each side of the grill. Since no fi lters
are used, periodic inspection and cleaning of the hood and duct work is especially important.
Installation
Continued