IDEAL EXALT COMBI Installation & Maintenance Manual

40
CHAPTER 7
CHAPTER 7 - GAS PIPING
Table 1 - Natural Gas Venturis
Table 2 - Gas Piping Sizing - Natural Gas
Model Venturi Diameter Top injector Bottom Injector Label Colour Part No.
110 Solo 22mm NG
Ø 3.6 mm NG Ø 3.4 mm White EXRKIT07
155 Solo 24mm NG
Ø 4 mm NG Ø 3.9 mm White EXRKIT09
199 Solo 26mm NG
Ø 4.2 mm NG Ø 5 mm White EXRKIT11
155 Combi 24mm NG
Ø 4 mm NG Ø 3.9 mm White EXRKIT09
199 Combi 26mm NG
Ø 4.2 mm NG Ø 5 mm White EXRKIT11
Length of Pipe in Feet
Capacity of Schedule 40 Metallic Pipe in Cubic Feet of Natural Gas Per Hour (based
on 0.60 specific gravity, 0.30” w.c. pressure drop)
SCH 40 1/2” 3/4” 1” 1-1/4” 1-1/2”
10 132 278 520 1050 1600
20 92 190 350 730 1100
30 73 152 285 590 890
40 63 130 245 500 760
50 56 115 215 440 670
75 45 93 175 360 545
100 38 79 150 305 460
150 31 64 120 250 380
2. Install 100% lockup gas pressure regulator in the
gas supply line if inlet pressure can exceed 13”w.c
at any time. Adjust the lockup pressure regulator
for 13”w.c maximum.
DO NOT adjust or attempt to measure gas valve
outlet pressure. The gas valve is factory-set for
the correct outlet pressure. This setting is suitable
for natural gas and propane and requires no field
adjustment. Attempts by the installer to adjust
or measure the gas valve outlet pressure can
result in damage to the valve, causing substantial
property damage, serious injury, or death.
•
The EXALT is factory equipped with the required
natural gas venturi. The natural gas venturi must
never be modified or replaced with a different size
venturi. Failure to use the required natural gas
venturi can result in substantial property damage,
serious injury, or death.
WARNING
WARNING
7.2. Natural Gas
7.2.1 Pipe Sizing
Refer to Table 2 below for schedule 40 metallic pipe
length and diameter requirements for natural gas,
based on rated EXALT input (divide by 1,000 to obtain
cubic feet per hour).
• Table 1 is based on Natural Gas with a specic
gravity of 0.60 and a pressure drop through the gas
piping of 0.30”w.c.
• For additional gas pipe sizing information, refer to
National Fuel Gas Code (NFPA 54 / ANSI Z223.1)
for installations in the U.S. or CAN/CSA B149.1 for
installations in Canada.
7.2.2 Supply Pressure Requirements
1. Pressure required at the gas valve inlet supply
pressure port:
• Maximum 13”w.c. at ow or no ow conditions
to the burner.
• Minimum 5”w.c. during ow conditions to the
burner. Must be veried during start up and
with all other gas appliances operating within
the building.

IDEAL EXALT COMBI Specifications

General

Brand	IDEAL
Model	EXALT COMBI
Category	Boiler
Language	English