Weil-McLain SlimFit Manual page 71

SlimFit
™
commercial condensing gas
Sola control express setup — multiple boilers
MASTER boiler setup
1. System sensor — attach the system sensor to the system supply pip-
ing. Wire from the sensor to the OUTDOOR/HEADER terminals on
terminal strip C.
2. Thermostat — Space heating thermostat, end switch or call for heat con-
tact wires to the T-STAT terminals on terminal strip C of the master boiler.
3. System pump —
a. Connect the System pump to the master boiler Pump B terminals
on terminal strip D.
4. Boiler pump —
a. Connect the master boiler's Boiler pump to the master boiler's
Pump A terminals on terminal strip D.
5. DHW options —
a. DHW as a system zone or supplied by the entire multiple boiler
group — DHW tank aquastat wires to DHW terminals on terminal
strip C of the master boiler. Connect the DHW pump to the master
boiler Pump C terminals on terminal strip D. (Also, set DHW demand
switch to "DHW (S6) sensor shorted" on the Lead Lag Master Con-
figuration Domestic Hot Water page.)
b. DHW connected to one of the slave boilers — DHW tank aquastat
wires to DHW terminals on terminal strip C of the slave boiler.
Connect the DHW pump to the slave boiler Pump C terminals on
terminal strip D.
6. Enable master boiler (as master)
a. The master boiler must be set up both as master and as a slave boiler.
This allows it to operate when the Sola control rotates lead/lag se-
quencing.
b. Go to HOME PAGE
LEAD LAG MASTER CONFIGURATION
c. Select "Enabled. "
7. Master — Setpoint temperature setting
a. From the Lead Lag Master Configuration main screen, press the
ADVANCED SETTINGS button.
b. Use the scroll arrow at upper right or left to scroll to the Central
Heat menu.
c. Select Setpoint and enter the required setpoint temperature.
8. Master — Outdoor reset settings
a. From the Lead Lag Master Configuration Central Heat menu, use the
scroll arrow at upper right or left to scroll to the Outdoor Reset menu.
b. If the first parameter, Enable, does not show Enabled, select it and
change to Enabled.
c. The Setpoint selected in the previous step is the top line of the reset
curve.
d. Set the remaining outdoor reset temperatures as required for the
installation. See page 59 for Outdoor reset temperature value ex-
planations.
e. Go to HOME PAGE
FIGURATION Outdoor temperature source. Change the value
to "UNCONFIGURED. "
9. Enable master boiler (as slave)
a. From the Lead/Lag Master screens, press the Return button on the
upper right of the screen to return to the Configure list.
b. Select LEAD LAG SLAVE CONFIGURATION.
c. From the Lead Lag Configuration main page, select the Enable line.
d. Select "Enable slave for built-in Lead Lag master. "
10. Other factory presets
mon parameters need to be adjusted for the application. See "Sola control
parameter table" beginning on page 72 for the complete list of parameters.
Part number 550-100-116/0713
CONFIGURE
Master Enable.
CONFIGURE SENSOR CON-
— review Figure 84 to see if other lead lag com-
-
fired water boiler
SLAVE boiler setup
1. Enable slave boiler
a. Go to HOME PAGE
b. Select "Enable slave for built-in Lead/Lag
2. Outdoor sensor
and shield to prevent solar gain. Wire to OUT-
DOOR/HEADER terminals on terminal strip C
to any one of the
is acceptable. The Sola control will recognize this
as the outdoor sensor (provided the slave boiler's
factory default setting for Outdoor temperature
source under SENSOR CONFIGURATION has
NOT been changed — should show "S5 ( J8-11)
sensor").
3. Boiler pump
a. Connect the Boiler pump of each slave boiler
4. DHW aquastat
a. DHW connected to one of the slave boilers —
b. See Figure 83, page 68 for default DHW
Multiple boilers — Space heating
[Apply for Figure 21, page 23 or Figure 22, page 24]
1. Setup master and slave boilers as instructed in this sec-
tion if using factory default pump assignments.
Multiple boilers — Space heating
with DHW as a zone
[Apply for Figure 21, page 23 or Figure 22, page 24]
1. Setup master and slave boilers as instructed in this
section.
2. The DHW aquastat and DHW pump connect to the
master boiler.
3. Setup based on the instructions related to DHW sup-
plied by the complete lead lag group.
Multiple boilers — Space heating
with DHW connected to a boiler
[Apply for Figure 21, page 23 or Figure 22, page 24]
1. Setup master and slave boilers as instructed in this
section.
2. The DHW aquastat and pump connect to the boiler
with the DHW piped to it.
3. Setup based on the Slave boiler with DHW instructions
in this section.
— Boiler Manual
CONFIGURE
LEAD LAG SLAVE CONFIGURATION
master"
— locate on an exterior wall
SLAVE boilers. Thermostat wire
—
to the slave boiler's Pump A terminals on
terminal strip D.
and DHW pump
DHW tank aquastat wires to DHW terminals
on terminal strip C of the slave boiler. Connect
the DHW pump to the slave boiler Pump C
terminals on terminal strip D.
settings.
(continued)
Enable.
—
71