Pomona, CA Clemmons, NC Nashville, TN
Tel: 908-355-7995 www.hayward-pool.com
USE ONLY HAYWARD GENUINE REPLACEMENT PARTS
12
HOW TO OPEN FRONT ACCESS PANEL
ATTENTION
: Care must be taken to not damage ribbon cable connecting display board to ignition
board when removing Front Access Panel.
1. Remove (1) screw above control, securing top jacket to front access panel.
2. Lift Access Panel up by the handle at the bottom.
3. Swing bottom of panel out.
4. Slide top of panel down, and then out. Be sure not to place too much tension on the ribbon
cable as the front panel is removed from the unit
5. Disconnect ribbon cable from ignition board.
GAS SUPPLY AND PIPING:
To properly size the gas piping for the heater, refer to Tables 3 or 4, depending on natural or propane gas,
and single-stage or 2-stage regulation. Follow local gas codes for proper gas line material selection (copper,
iron, plastic, etc.). It is VERY IMPORTANT when installing a propane heater on a 2-stage regulation system
to follow the gas line sizing data in Table 4 without exception.
*Based upon an inlet pressure of 0.5 psig or less at a pressure drop of 0.5 in-wc.
**Based upon an inlet pressure of 11 in-wc at a pressure drop of 0.5 in-wc.
Table 3
Gas Pipe Sizing
Low-Pressure, Single-Stage Regulaion
Distance from
Gas Meter or Tank
Regulator Outlet to
Heater Gas Valve
Inlet
Gas Type
Natural Gas*
Propane**
btu/hr input
135,000
135,000
135,000
Line Material
Iron or Plastic
Pipe
Iron Pipe
Plastic Pipe
0 to 50 ft
3/4”
3/4”
3/4”
50 to 100 ft
1”
3/4”
1-1/8”
100 to 200 ft
1-1/4”
1”
1-1/8”
200 to 300 ft
1-1/4”
1”
1-1/8”
Table 4
Gas Pipe Sizing
High-Pressure, 2-Stage Regulaion
Distance from Gas Meter or Tank
Regulator Outlet to Heater Gas Valve
Inlet
Gas Type
Natural Gas
Propane
btu/hr input
135,000
135,000
135,000
Line Material
Iron or Plastic
Pipe
Iron Pipe
Plastic Pipe
First Stage
0 to 50 ft
1/2” *
1/2” ***
1/2” ***
50 to 100 ft
1/2” *
1/2” ***
1/2” ***
100 to 150 ft
1/2” *
1/2” ***
1/2” ***
Second Stage
0 to 10 ft
1/2” **
1/2” ****
5/8” ****
*Based upon an inlet gas pressure of 2 psig at a pressure drop of 1 psi.
**Based upon an inlet gas pressure of 10 in-wc at a pressure drop of 0.5 in-wc.
***Based upon an inlet gas pressure of 10 psig at a pressure drop of 1 psi.
****Based upon an inlet gas pressure of 11 in-wc at a pressure drop of 0.5 in-wc.