Table of Contents
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Contents
1A. Introduction ...................................................... 3
1B. Heater Identification ......................................... 3
1C. Flow Requirements .......................................... 4
1D. Water Chemistry .............................................. 4
2A. Heater Placement ............................................ 4
2B. Installation of Indoor Heaters ........................... 5
2B-1 Combustion Air Supply ......................... 5
2B-2 Venting ................................................. 6
2C. Installation of Outdoor Heaters ......................... 7
2D. Gas Supply and Piping ..................................... 7
2E. Electrical Wiring ............................................... 8
2F. Water Piping of System .................................... 9
2G. Water Expansion .............................................. 9
2H. Pump Performance and Installation ............... 10
Water Pressure .............................................. 14
Tank Installation ............................................. 14
2K. Two-Temperature System ............................. 17
3A. Controls - General ......................................... 17
3B. Initial Start-up ................................................. 19
3C. To Start Up System ........................................ 19
3D. To Turn Off Heater ......................................... 20
3E. To Shut Down System ................................... 20
SECTION 4. MAINTENANCE . ............................. 20
ANALYSIS OF SERVICE PROBLEMS . ................ 21
TABLES AND FIGURES
Table I.
Boiler Configuration ................................. 4
Table II.
To Heater ................................................ 6
Page
Table III. Gas Piping Sizes ..................................... 8
Table IV. Pump Performance Requirements ........ 14
Table V.
Temperature Settings ............................ 18
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Figure 2
Figure 3
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Figure 5
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Figure 7
Figure 8
Figure 9
Figure 10
Figure 11
Figure 12
Figure 13
Figure 14
Figure 15
Figure 16
Figure 17
Figure 18
Figure 19
Figure 20
Figure 21
Figure 22
Figure 23
Boiler Configuration ............................... 3
for Combustible Floors (Ex. A) .............. 5
for Combustible Floors (Ex. B) .............. 5
for Combustible Floors (Ex. C) .............. 5
or Tile .................................................... 5
Alcove Installation ................................. 6
Incorrect Outdoor Installation ................ 7
T-Fitting Sediment Trap Installation ....... 8
Pressure Relief Valve Location ............. 9
Tempering Valve Installation ................. 9
Hot Water Supply System for
Models VW and PW ............................ 11
Circulating Pump ................................. 12
Split System Piping for Model IW ........ 12
Dual Installation Piping Diagram
for Model IW ........................................ 13
Single Installation Piping
Diagram for Model IW ......................... 13
Two Temperature Hot Water
Supply System (Model VW or
PW) Vertical/Horizontal Tank .............. 15
Two Temperature Hot Water
Supply System w/Vertical
Tank for Models VW and PW
Water Heaters ..................................... 16
Controls Location ................................ 16
Control Components ........................... 18
Pilot Burners (I.I.D.) ............................. 18
Gas Manual Valves ............................. 19
Pilot Safety Relay ................................ 20
Main Burner Flame Pattern ................. 20
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