Operation
5-1
Operation
2 - “return” isolation valve in the
“open” position
2-2
2-1
3 - automatic air vent
Before Firing the System
Before proceeding with the “Water Heater Initial Firing” procedures, confirm the following:
•
Verify that the “Positioning and Handling of Water Heater
Module” procedures in the “Setup” section of the
operators manual have been completed properly.
•
Verify that the “Fuel Setup” procedures in the “Setup”
section of the operators manual have been completed
properly.
•
Verify that the “Electrical Requirements & Connection”
procedures in the “Setup” section of the operators manual
have been completed properly.
•
Verify that the heat transfer fluid level gauge shows
between 1/4 and 1/2 full.
•
Verify that the shipping plug (1-1) is removed from the
exterior elbow fitting that serves as the glycol reservoir
tank vent/overflow.
Electrical Check & Power-up
•
Make sure the gas supply is closed off and control panel toggle switchws are in the “OFF” position.
•
Supply power to the system.
Fluid Circulation System Start-up
The DRYAIR water heater cabinets, portable heat exchangers and circulation line are shipped pre-
filled with heat transfer fluid.
Purging Air from the
“HTF” Circulation
System
•
Verify that the “supply” and “return” coupler connec-
tions (2-1) on the “water heater module” are connected to
the circulation manifold (2-2) or the primary circulation
lines.
•
Complete the connection for one “heat exchanger loop” or
“portable heat exchanger” This will close the circulation
loop and allow circulation.
•
Verify that the “supply” and “return” isolation valves
(2-1) and the isolation valves (if used) are in the “open”
position.
•
The DRYAIR Model 2000-0250 system is equipped
with an in-line automatic air separator (3-1) to eliminate
air trapped in the fluid distribution system. No
adjustment to the air separator is required.
3-1
1-1
1 - reservoir overflow/vent outlet elbow
