Hydro-Hot Hydronic Heating System Owner’s Manual 08/04
®
Hydro-Hot
Overview
,
continued
Figure 1B
SECTION 1: OVERVIEW
T
A
W
T
O
H
COLD WA
Engine Preheat
"IN" Port
Circulation Pump #2
"Return Port"
Pressure-Relief
Valve
Mixer Valve
Low-Temp
Cutoff Thermostat
Hour Meter
Engine Preheat
Circulation Pump
Engine Preheat
"OUT" Port / Barb
Domestic ("COLD")
Water Inlet
Domestic ("HOT")
Water Outlet
REAR VIEW
Circulation Pump #1
"Return Port"
2.1 Activating the Hydro-Hot Heating System
Diesel-Burner
Turn the
Diesel
switch
ON
, reference
Figure 2
. This procedure will
activate the Diesel-Burner and the indicator light located on the Diesel
switch. Allow 10-20 minutes for the Hydro-Hot System to reach operating
temperature. Please note that the Diesel-Burner is the
primary heat
source
for heating both the interior and the domestic hot water (such as
when cool ambient temperatures exist and/or when there is a high de-
mand for domestic hot water).
Electric Heating Element
Turn the
Electric
switch
ON
, reference
Figure 2
. This procedure will
activate the 120 VAC Electric Heating Element and the indicator light
located on the Electric switch. Allow 1-2 hours for the Hydro-Hot System
to reach operating temperature.
Also, please note that the Electric Heating Element is a
secondary heat
source
for heating both the interior and the domestic hot water during low
heating demand situations (such as when moderate ambient tempera-
tures exist and/or when there is a low demand for domestic hot water).
SECTION 2: OPERATING INSTRUCTIONS
Heat
Sources
Please read the complete Owner’s Manual prior to operating your
Hydro-Hot Heating System. Also, be sure to fill out and mail in your
Owner’s Information Card located at the front of this manual.
Page 2
NOTE:
The “Diesel” switch can also be used to reset a 12 Volt-DC Low
Voltage fault. Please reference Section 5.
