User Guide

14 • On-Demand Rack System
MAINTENANCE / SPECIFICATIONS
SPECIFICATIONS: WALL MOUNT 62.81” FRAME WIDTH
Three Units
Heater
540 / T-H3, IN/OS*, NG/LP, 199,000 BTU/h
Number of Heaters
3
Total Input (BTU/h)
597,000
Max. Flow at 50°F ΔT (gpm)
22.8
Max. Flow at 60°F ΔT (gpm)
18.9
Max. Flow at 70°F ΔT (gpm)
16.2
Max. Flow at 80°F ΔT (gpm)
14.1
Max. Flow at 90°F ΔT (gpm)
12.6
Max. Flow at 100°F ΔT (gpm)
11.4
* IN - Indoor Model; OS - Outdoor Model
Two Units
Heater
540 / T-H3, IN/OS*, NG/LP, 199,000 BTU/h
Number of Heaters
2
Total Input (BTU/h)
398,000
Max. Flow at 50°F ΔT (gpm)
15.2
Max. Flow at 60°F ΔT (gpm)
12.6
Max. Flow at 70°F ΔT (gpm)
10.8
Max. Flow at 80°F ΔT (gpm)
9.4
Max. Flow at 90°F ΔT (gpm)
8.4
Max. Flow at 100°F ΔT (gpm)
7.6
* IN - Indoor Model; OS - Outdoor Model
Rack/Frame Dimensions
Refer to the next page.
Frame Material
AW-6063 T66 Extruded Alloy with Clear Annodized Coating
Cold Water Header
2” dia. Copper Tube
Hot Water Header
2” dia. Copper Tube
Gas Line Header
1-1/2” Sch. 40, A53A, Blk
Water Connectors to Heaters
2’ long, 3/4” dia. Stainless Steel Flex Line
Gas Connectors to Heaters 3’ long, 3/4” dia. CSST
Basics (all configurations)