14
The installation base of concrete of the unit is as follows:
Unit: inches
Model
A
B
C
ccHPWH275-S
43.3
36.90
18.5
ccHPWH275-D
ccHPWH550-S
51.75
49.375
21.65
ccHPWH550-D
4. Hydronic piping layout
4.1. Pipe size
Please refer to the performance specification for inlet and outlet pipe diameters
.
4.2. Water tank selection
Pressurized Tank Applications
: A pressure relief valve should be installed on the water tank and selected to
relieve pressure at no more than 10% less than the rated working pressure of the water heater and all other
system components. If there is no pressure relief device installed on the water tank, the water system must be
equipped with a pressure relief value (PRV).
The PRV should be piped to a drain and open to atmosphere. To ensure proper operation of the PRV, it should
be checked on a regular basis to ensure it is free of sediment or calcium carbonate deposits.
The working pressure of the system should be set for a minimum of 30-psig.
Atmospheric Tank Applications:
The unit is equipped with high, medium, and low water level, automatic water
replenishment control function, which allows for integration with an open (atmospheric) tank. When the unit is
applied to a pressurized tank, the output line of the high, medium, and low water level control will require a jumper
to complete the circuit. This jumper should be factory installed.
Содержание ccHPWH Series
Страница 11: ...8 III Product specification 1 Dimensions Unit inch ccHPWH275 S ccHPWH275 D ...
Страница 12: ...9 ccHPWH550 S ccHPWH550 D ...
Страница 26: ...23 2 Wiring diagram ccHPWH275 S ccHPWH275 D ...
Страница 27: ...24 ccHPWH550 S ccHPWH550 D ...
Страница 42: ...39 Schematic diagram of control wiring and code dialing of each module ...