Space Ray LTS Series Two Stage User Manual
Page 43
Form #43155040
-42-
May 2013
Multiple Heater Horizontal Venting Arrangement
4 diameter
single wall vent
Plan View
Vent Cap
2 (5cm)
Clearance
Thimble
6 (15cm)
minimum
Y Connector
4 diameter
single wall vent
2 (5cm)
Clearance
Thimble
no less than 1/4 (6mm)
rise per foot (0.3m)
toward vent terminal
6 (15cm)
minimum
Y Connector
See Vent
Sizing Table
for diameter
See Vent
Sizing Table
for diameter
no less than 1/4 (6mm)
rise per foot (0.3m)
toward vent terminal
Multiple Heater Venting (Connections into a Manifold)
Total
vent
height
Connector
rise
VENT SIZING TABLE
VENT SIZING TABLE
VENT SIZING TABLE
VENT SIZING TABLE —
—
—
—
Multiple Heater Venting
Multiple Heater Venting
Multiple Heater Venting
Multiple Heater Venting
Number of Heaters
Number of Heaters
Number of Heaters
Number of Heaters
1
1
1
1
2
2
2
2
3
3
3
3
4
4
4
4
5
5
5
5
LTU40-50
4”
4”
5”
5”
6”
LTU60-75
4”
5”
6”
6”
7”
LTS/U80-100
4”
6”
6”
7”
8”
LTS/U110-130
4”
6”
7”
8”
9”
LTS/U140-175
4”
6”
8”
9”
10”
LTS/U180-200
6”
8”
9”
10”
11”
LTS/U225-250
6”
9”
10”
11”
12”
COMMON VENT DIAMETER
COMMON VENT DIAMETER
COMMON VENT DIAMETER
COMMON VENT DIAMETER
(If a size is not available use the next larger size.)
THE ABOVE ILLUSTRATIONS AND TABLE OF VENT SIZES FOR COMMON VENTING OF MULTIPLE HEATERS ARE IN
ACCORDANCE WITH THE NATIONAL FUEL GAS CODE ANSI Z223.1-LATEST EDITION, NFPA 54-LATEST EDITION, EQUIPMENT
VOLUME OF 1988 ASHRAE HANDBOOK, CURRENT CAN/CGA-B149.1/2-M86 INSTALLATION CODE, AND AGA PUBLICATION
NO. 10M5.85 2.5-2 ON FUNDAMENTALS OF GAS APPLIANCE VENTING AND VENTILATION-REVISED BUT ARE NOT A PART OF
THE CSA CERTIFICATION.