TWO
COMMERCIAL BOILER WITH VERTICAL TANK, CER-TEMP 80
IMPORTANT
THE INSTALLATION OF SAFETY FLOW SWITCH AS SHOWN IS
REQUIRED TO PROTECT THE BOILER IN CASE OF WATER SERVICE
INTERRUPTION OR CIRCULATOR FAILURE.
+ PIPING AND FITTINGS BETWEEN GATE VALVES AND BOILERS SHOULD BE BRASS OR BRONZE. OTHER PIPING SHOULD CONFORM TO LOCAL CODES.
GATE VALVES ARE SHOWN FOR SERVICING BOILER. HOWEVER,
LOCAL CODES SHALL GOVERN THEIR USAGE.
*PRESSURE RELIEF VALVE RATING SHOULD NOT EXCEED PRESSURE CAPACITY OF ANY COMPONENT IN THE SYSTEM.
** INSTALLTHERMOMETERAND PRESSURE RELIEF IN OPENINGS PROVIDED ON
DANGER
TEMPERATURE SETTING SHOULD NOT EXCEED SAFE USE TEMPERATURE
AT FIXTURES. SEE TANK TEMPERATURE CONTROL WARNING ON PAGE 11. IF
HIGHER PREHEAT TEMPERATURES ARE NECESSARY TO OBTAIN ADEQUATE
BOOSTER OUTPUT, ADD AN
TO FIXTURES.
WIRING - FIGURES 21 to 27 on
pages 28 to 32.
HEATERS SPACED 30" APART
INSTALL IN ACCORDANCE
WITH ALL LOCAL CODES
USE THIS TABLE FOR CORRECT
PUMP AND WATER PIPE SIZE
| Minimum | B & G |
| |
Model | Pipe Size | *Armstrong | ||
Number | (Inches) | Pump | Pump Size | |
|
|
| Size |
|
| A | B |
| |
|
|
| ||
2" | 2" | |||
2" | 2" | |||
2" | 2" | |||
2" | 2" | |||
*Assumes 50 equivalent feet of piping or less.
FIGURE 30.
35
