Installation Guide

Pomona, CA Clemmons, NC Nashville, TN
Tel: [phone] www.haywardpool.com
USE ONLY HAYWARD GENUINE REPLACEMENT PARTS
24
If the normal pump and lter system ow rate exceeds
125 gpm then a manual bypass valve must be installed as
shown in Figure 16. Damage caused by ow rates outside
this range will void the manufacturer’s warranty.
The installation is as follows:
1. Install a ow meter on the outlet line of the heater.
2. Adjust the manual bypass valve until the ow
rate is within the ow rate range specied for the
heater.
3. Once the valve is set, note the position and remove
the valve handle to prevent further adjustment.
ATTENTION: Improperly adjusted manual bypass valves will result in damage to the heater if the
ow rates are not maintained as specied in Table 14 under all operating conditions. The heat exchang-
er will fail and this damage will not be covered under the Hayward warranty.
Table 14
Allowable Water Flow Rate Range
Model
Minimum Flow
Rate (GPM)
Maximum Flow
Rate (GPM)
H150FD
H200FD
20 125
H250FD
H300FD
25 125
H350FD
H400FD
30 125
H500FD 40 125
Figure 16: Manual Bypass valve