29
P/N HN-IOM-1 82-0331 Copyright 2009 Mestek, Inc.
Finned copper tube gas boilers & water heaters – Control manual
HeatNet display during Standby (no call
Figure 10
for heat) — pressing the DOWN key on the
keypad changes the display as shown.
LOCAL SET or SYSTEM SET can be adjusted
while in Standby as described in this sec-
tion.
S T A N D B Y
L O C A L
S E T
1 80
o
F
The above display occurs on single-boiler
installations only (no header sensor installed).
— OR —
S T A N D B Y
S Y S T E M
S E T
1 80
o
F
The above display occurs when boilers are
connected to a HeatNet network.
S T A N D B Y
* S T A T U S
S T A R T
0
S T O P
0
S T A N D B Y
R E T U R N
1 80
o
F
S T A N D B Y
O U T S I D E
1 80
o
F
S T A N D B Y
S U P P L Y
1 80
o
F
S T A N D B Y
H E A D E R
NA
The “NA” appears if a sensor is not connected to
the SYSTEM HEADER sensor terminals. The
master boiler (where the SYSTEM HEADER
sensor is attached) will show the SYSTEM
HEADER temperature in lieu of NA.
S T A N D B Y
L O C A L
S E T
1 80
o
F
The HEATNET control display
Starting the display
Check all wiring to make sure it is complete and all wires are securely connected.
1.
Verify that the HEAT DEMAND and DHW DEMAND wires are removed.
2.
Close the external gas valve on every boiler.
3.
Turn on power to the boiler and then turn the boiler on/off switch ON.
4.
The control will beep at least twice and the display will show the first STANDBY
5.
display in Figure 10. Note that pushing the DOWN button on the keypad will
change the right side of the display as shown, providing information on various
setpoints and parameters.
The display, LOCAL SET, means the setpoint temperature for a single boiler ap-
6.
plication. Figure 10 shows the factory default values.
Adjusting setpoint temperature while in Standby
The local setpoint temperature (LOCAL SET) or system setpoint temperature
1.
(SYSTEM SET) can be adjusted using the SETUP menus or by pressing down the
SELECT key for one second while in Standby.
The setpoint will begin to flash. Use the arrow keys to increase or decrease the set-
2.
point.
When satisfied, press SELECT to keep the new number. To cancel and return to
3.
Standby, press the BACK button.
Accessing setup menus
With the display in STANDBY, press and hold the BACK key for 5 seconds.
1.
The display will change to:
2.
S E T U P
A D V A N C E D
S E T U P
V I E W
L O G
Press the SELECT key to select setup. (Note that pressing the DOWN key would
3.
change the selection to ADVANCED SETUP or VIEW LOG.)
The display will now show the first options in the setup menus:
4.
F U T E R A S E R
V 3 . X
B O I L E R S
S E T P O I N T S
O U T D O O R
A I R
R E S E T
All boilers on a network must have firmware revisions of 2.0 or above,
or all can have revision 1.x. Do not mix 2.x firmware boilers with
1.x firmware boilers. Follow the procedure in this manual (Table 9,
page 35) to install a firmware update on each boiler as necessary. To
ensure consistent setup, all boilers should preferably have the SAME
firmware edition.
Press the DOWN key to access additional menu options. Pressing the DOWN
5.
button once will change the display to:
F U T E R A S E R
V 3 . X
B O I L E R S
S E T P O I N T S
O U T D O O R
A I R
R E S E T
The cursor moves to the second line, indicating this option could now be selected
6.
with the SELECT key.
Continuing to press the DOWN key will access the menu options listed on the
7.
following pages. Table 7, page 30 lists the sequence of menu items found under the
SETUP menu. Table 8, page 33 lists the sequence of menu items found under the
ADVANCED SETUP menu. For an explanation of the parameters, see Table 9,
page 35.
Control menus and adjustments
7
