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Installation
Page 9
Figure 9C. Honeywell MV Gas Valve.
ELECTRONIC IGNITION GAS VALVES
Figure 10. Location of Gas Pressure Adjustment.
PIPE SIZING FOR GAS CONNECTIONS
Table 5. Maximum Equivalent Pipe Length.
WATER CONNECTIONS
The heater requires water flow and positive pressure to
fire and operate properly. It must therefore be installed down-
stream of the discharge side of the filter pump. A typical
installation is plumbed as follows:
Maximum Equivalent Pipe Length
Natural Gas 1000 BTU/FT3 0.60
Specific Gravity @ 0.5 in. WC Pressure Drop
Propane Gas 2500 BTU/FT3 1.53
Specific Gravity @ 0.5 in. WC Pressure Drop
Input 1/2” 3/4” 1”
Model (KBTU) N P N P N P
130A 130 15 35 60 145 200 500