Chromalox CHPES-6A - Manual (Page 16)

HIGH PRESSURE FEED
High pressure makeup water pumps are used when water pressure
does not exceed boiler pressure by more than 10 psi and when con-
densate water is not returned to the boiler. Note: Consult factory or
sales office for motor/pump sizing for appropriate water feed system.
Installation
WARNING: Hazard of Electric Shock. Water feed system
must be effectively grounded in accordance with the
National Electrical Codes to eliminate shock hazard.
1. Locate feed on level floor or platform.
2. Connect water line to tagged fitting on feed.
3. Connect piping from discharge to water inlet check valve on boil-
er with minimum of 90˚ bends or other restrictions.
4. All electrical wiring should be done by licensed electricians in
accordance with local and national electrical codes. Refer to boil-
er instruction for manual wiring diagram.
5. If pump is located less than 30 feet from boiler, a second check
valve is required.
WATER FEED SYSTEMS
Automatic High Pressure Water Feed Pump/Motor Assembly
OPTIONAL EQUIPMENT FOR STEAM BOILERS
16
Pipe Dimensions (In.)
Assembly Pressure Size
Model HP Range (NPT) A B C D E F
ES-38020 3/4 0-200 1/2 16-1/4 3 7-3/16 4-7/8 6-1/2 6-1/8
Pressure
Control
5 Step
Control
Sequencer
Auto
Blowdown
System
Heater Contactor
Heater Contactor
Heater Contactor
Heater Contactor
Feed Water
Solenoid Valve
Boiler
On
Optional Transformer
480/120V
480V 3Ø 60 HZ
CR
W
1
Mtr
Customer
Connect
Feed Water
Motor 10L
30L
20L
IT1
IT3
IT2
CR
L1 L3 L2
Pump Motor Dimensions
Typical wiring for boilers equipped with Auto Blowdown System and/or Solid State Sequencer
Wire Color Code
B
= Black
BR = Brown
R
= Red
O = Orange
Y = Yellow
G = Green
BL = Blue
W = White