2
CLEARANCES
Space required: See page 12.
Minimum and service clearances: See page 7 for
clearances table. Note that local codes prevail.
PIPING
Pressure relief valve: See page 18 for recommended
PRV orientation.
Flow rates: See page 15 for flow rate values.
GAS
Distance to regulator (pipe lengths) and gas inlet
sizes: See page 15.
Required pressure for Natural Gas:
Min = 6" WC, Max = 10.5" WC
Required pressure for Propane Gas:
Min = 12" WC, Max = 13" WC
Sediment trap is required for all installations.
See page 14.
WATER CHEMISTRY
Water chemistry requirements: See page 5.
POWER
Supply voltage: See page 21 for acceptable input
voltages.
VENTING
Materials: See pages 11 and 13.
D-2 Power Vent Kit: See page 13.
Indoor Stack: See page 11.
CONTROLS INTERFACE
Wiring diagrams: See page 22.
User interface: See pages 23.
Remote operation: See page 27.
QUICK START GUIDE
Revision 7 reflects the following changes:
Figure 10 revised on page 13. Table I and J revised on page 15. "External Auxiliary Bypass Valve" text revised on page 17. "Hi Limits"
text revised on page 29. Figure 45 revised on page 29. Texas Code figure revised on page 41. Part 9-C description revised on page
42.
RELEASED
For Reference Only
