Detroit Radiant Products Company SV Series - Manual (Page 27)

Figure 3.24 • Common Rooftop Venting - Side View
Common Venting
• A staggered arrangement or a dual exhaust assembly (P/N: Y) must be used when joining two
heaters to a common vent so that by-products of one heater do not flow into the adjoining vent of
the other heater.
• 6 in. diameter double-wall Type B-vent and 6 in. vent cap must be used when penetrating though a
combustible material.
• Common vented heaters must be controlled with the same thermostat. Do not operate individually.
Figure 3.25 • Common Sidewall Venting - Top View
Double-Wall B-Vent
*Consult the NFPA ANSI Z223.1 Gas
Vent Termination criteria if roof pitch
exceeds 9:12.
Tube Heater General Manual
27
3.0 Installation • Common Venting
Heater
Heater
Dual Exhaust Assembly
Sidewall
Sidewall Vent Cap
Wall Thimble
B To C
Adapter
Single Wall Vent
6 in.
Min.
Rooftop Vent Cap
Roof
Dual Exhaust Assembly
Heater
Firestop Spacer
Double-Wall B Vent
24 in.
Min.*
Heater
B-to-C Adapter
Single-Wall Vent