41
Figure 36: Minimum Piping Requirements for V9A Tankless Heater Manifolds
Figure 37a: Schematic Tankless Heater Piping
Notes:
1. Ratings are given in gallons per minute continuous
flow of water heated from 40°F to 140°F with 200°F
boiler water.
2. For tankless heater quantities less than maximum
allowable, it is important that water heaters be
centrally located in the boiler.
See Figure 8 for appropriate locations.
3. Tankless heater pressure drop is 5.5 PSI at
7.5 GPM.
Boiler
Model
Number of V9-2 Tankless Heaters Installed
1
2
3
4
V903A
6.75
---
---
---
V904A
7.5
---
---
--
V905A
7.5
---
---
---
V905A
7.5
---
---
---
V906A
7.5
15
---
---
V908A
7.5
15
---
---
V909A
7.5
15
22.5
---
V910A
7.5
15
22.5
---
V911A
7.5
15
22.5
---
V912A
7.5
15
22.5
30
Table IV: Tankless Heater Ratings
Summary of Contents for operating and
Page 2: ...2 ...
Page 8: ...8 Section I General Information Figure 1 Dimensional Information ...
Page 21: ...21 Figure 16 Bare Boiler Assembly ...
Page 25: ...25 Figure 22 V9A Series Jacket Assembly Boiler Models V903A thru V912A ...
Page 31: ...31 Figure 26 V9A Series Minimum Piping Parallel Water Boiler ...
Page 32: ...32 Figure 27 V9A Series Minimum Piping Primary Secondary Water Boiler ...
Page 33: ...33 Figure 28 V9A Series Minimum Piping Details Bypass with Blend Pump Water Boiler ...
Page 34: ...34 Figure 29 V9A Series Minimum Piping Primary Secondary with Bypass Water Boiler ...
Page 37: ...37 Figure 32 Minimum Piping Requirements For Gravity Return V9A Series Steam Boilers ...
Page 42: ...42 Figure 37b DHW Generation with Tankless Coils Storage Tank and Destratification Pump ...
Page 43: ...43 Figure 37c DHW Generation with Indirect Water Heater ...
Page 58: ...58 Figure 40 Bare Boiler Assembly ...
Page 62: ...62 SERVICE RECORD DATE SERVICE PERFORMED ...
Page 63: ...63 SERVICE RECORD DATE SERVICE PERFORMED ...
Page 64: ...64 ...
