0) venting – Gas-Fired Products Infrared Radiant Tube Heater PTS Series User Manual
Page 35
Form
#43343330
–34–
May 08
D. LOW VOLTAGE (24V) THERMOSTAT CONNECTIONS – MULTIPLE HEATERS (utilizing a fan center relay)
Burner Control Box
Ground
N Neutral
L1 Hot (120V)
Low voltage
thermostat (24V)
Continue To
Additional
Heaters
Power Supply
Cord (120V)
Receptacle
TH
C
Jumper factory
installed for optional
24V thermostat
Fused
Disconnect
switch
24V
coil
C
R
G
NO
TH
C
Fan Center Relay Part No. 30169000
Contact Rating: 120V, 40VA, 12A
(maximum of 6 heaters per relay)
16.0) VENTING
Failure to do so may result in death, serious injury, property damage or illness
from Carbon Monoxide poisoning.
Heaters installed in an unvented mode require a minimum ventilation flow of
4 CFM per 1,000 Btu/hr of total installed capacity.
In buildings with airborne contamination such as poultry houses the heater
must be installed with fresh air for combustion.
CARBON MONOXIDE HAZARD
A. BASIC FLUE VENTING — Venting must comply with the latest edition of the National Fuel Gas Code (ANSI
Z223.1-latest edition) or the authority having jurisdiction. Other venting references are in the equipment volume of
the ASHRAE Handbook.
Vent lengths shown in the table are for horizontal and vertical venting. If a longer length of vertical or horizontal
venting is required contact the manufacturer for assistance with vent sizing.
Model Heat
exchanger
length ft
Maximum vent length ft.
(4” diameter)
Maximum Fresh air
intake length ft (4”
diameter)
Max. combination of
fresh air and vent ft. (4”
diameter)
PTS/U
40
20
45 50 75
PTS/U
50
20
45 50 75
PTS/U
50
30
35 40 65
PTS/U
75
20
45 50 75
PTS/U
75
30
35 40 65
PTS/U
100
30
45 50 75
PTS/U
100
40
35 40 65
PTS/U
125
30
60 50 75
PTS/U
125
40
50 40 65
PTS/U
125
50
40 30 55
PTS/U
150
40
60 50 75
PTS/U
150
50
50 40 65
PTS/U
150
60
40 30 55
PTS/U 175
50
60 50 75
PTS/U 175
60
50 40 65
PTS/U 175
70
40 30 55
PTS/U
200
50
60 40 65
PTS/U 200
60
50 30 55
PTS/U 200
70
40 30 45