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CTH3-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
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8.11.4 Vertical Outside Air Supply for Double Heater Installation
Requirements:
• Heaters must be controlled by a common thermostat.
8.11.5 Horizontal Outside Air Supply for Double Heater Installation
Requirements:
• Heaters must be controlled by a common thermostat.
Sweeping 'T'
Connection
For 80 and 115 models, 6" (15 cm) Single Wall Pipe.
For 150 or 200 models, 7" (18 cm) Single Wall Pipe.
Vent Cap
Band Clamp
(Recommended)
BurnerBurner
Flex Hose
(Recommended)
Flex Hose
(Recommended)
Roof
For 80 and 115 models, 4"
(10 cm) Single Wall Pipe.
For 150 or 200 models, 5"
(13 cm) Single Wall Pipe.
Description Part Number
Vent Cap 6" (15 cm) 90502302
SIDE VIEW
Sweeping 'Y'
Connection
Vent Cap
Outside Wall
For 80 or 115 models, 4" (10 cm)
Single Wall Pipe. For 150 and 200
models, 5" (13 cm) Single Wall Pipe.
Flex Hose
(Recommended)
Band Clamp
(Recommended)
Burner
Burner
4"
(10 cm)
Min.
For 80 or 115 models, 6" (15 cm)
Single Wall Pipe. For 150 and 200
models, 7" (18 cm) Single Wall Pipe.
Description Part Number
Vent Cap 6" (15 cm) 90502302
TOP VIEW