User Guide

SERVICE TECHNICIAN ONLY — read and follow completely.

Connect water piping (continued)

Figure 13 Piping with CIRCULATORS

Figure 14 Piping with ZONE VALVES

Piping for systems requiring

temperatures below 140°F

In most systems, this type of piping is not required. If

system water temperature requirements are less than

140°F, such as radiant panels or converted gravity sys-

tems, use piping as shown in Figure 13 or Figure 14. If

system piping is plastic without an oxygen barrier, a

heat exchanger must be used.

Legend

1 Isolation valve

2 Flow control valve

3 Circulator

4 System temperature

gauge

5 Zone valve

6 Drain valve

7 System temperature

valves

Adjust valves so that:

- the temperature at

gauge 8 is at least 140°F

- the temperature at

gauge 9 is at least 160°F

8 Blend temperature

gauge

9 Boiler temperature

gauge

Part number 550-141-826/1014

GOLD

WGO

OIL-FIRED NATURAL DRAFT WATER BOILER — SERIES 3 — Boiler Manual