User Instructions
Section 2
Installation ___________________________________________________
Section Contents
Before
Open-Loop
Hydraulic Installation
䊳 Hydraulic Installation Open-Loop Cooling
䊳 Hydraulic Installation Closed-Loop Cooling
䊳 Electrical Installation
Before proceeding with the installation of the open-loop system,
please take note of the following important information:
1. Reduced diameter fi ttings may be used if they do not reduce
fl ow rate and increase pressure drop signifi cantly. Galvanized
steel unions are recommended at all connections.
2. If water pressure falls below 20 psi, a pressure switch will
interrupt pump motor and heater operation. Use an external
water pressure regulator and back pressure relief valve or
regulator, set at maximum 125 psi (150 psi with 7.5 hp motor)
connected in the external fi ll line, to reduce excessive water
pressure.
Not provided on CMX-180 models.
1. The water feed line on both open and closed loop systems
must not have any obstructions which could prevent
expanding water from backing up into the feed line.
2. Do not use oils or other synthetic heat transfer fl uids. This
system is for use with water or ethylene glycol and water
mixture for freeze protection only as the heat transfer fl uid.
3.
When installing system, allow suffi cient room to remove the
heater element and other serviceable items when necessary.
18 inches clearance on sides of unit recommended.
4. If the water source is a potable water source, a back fl ow
preventer and back pressure relief valve/regulator should be
installed and may be required by local code. Do not install a
check valve only on the fi ll line. The inability of the system
to fl ow back into the fi ll line can lead to excessive pressure.
Back pressure relief is required.
5. To avoid excessive pressures, do not connect any valves or
obstructions which could prevent free discharge from relief
valve in a safe manner. Route line so water drains completly.
Do not allow drain to freeze or corrode shut.
WARNING
Hazard of Explosion, Fire and Scalding Burns
5
To Next Page
Loading...
Need help?
General
