Weil-McLain 2 Series Manual page 84

®
SlimFit Series 2
Startup procedure
6. After gas valve 1 has opened, end the call for heat.
7. This procedure can be repeated by selecting and entering Open
Gas Valve 2.
8. After the testing is complete and the call for heat has been re-
moved, use the back button to exit the Gas Valve Test Screen.
This will then reset the control to open both Gas Valves for any
call for heat.
Check gas input rate
1. Measure natural gas input:
a. Operate boiler 10 minutes.
b. Turn off other appliances.
c. At natural gas meter, measure time (in seconds) required to
use one cubic foot of gas.
d. Calculate gas input:
3600 x 1000
number of seconds from step c
e. Btuh calculated should approximate input rating on boiler
rating label.
2. Use the Control display to navigate to Manual test mode (see
Figure 68, page 74) and force the firing rate to Low (low fire).
3. Look at the flame through the flame inspection window. The low
fire flame should be stable and evenly distributed over burner
surface with a uniform orange color.
4. Repeat the combustion test of steps 5 and 6 above.
5. Use the Control display to navigate to Manual test mode (see
Figure 68, page 74) and force the firing rate to AUTO (normal
operation).
6. Re-install the flue gas temperature sensor.
Verification check list
❏ Verified that the control is programmed correctly?
❏ Verified that boiler and heat distribution units filled with water?
❏ Verified water chemistry per page 79?
❏ Automatic air vents, if used, opened one full turn?
❏ Air purged from system?
❏ Air purged from gas piping? Piping checked for leaks?
❏ Filled condensate trap with water?
❏ Thermostat circuit wiring checked to ensure there are no stray
voltages?
❏ Followed Operating Instructions, Figure 78, page 85.
❏ Burner flame and combustion verified per page 82?
❏ Verified control operation for space heating and DHW (if used)
per this manual?
❏ Tested additional field-installed controls? Verified controls cause
automatic reset or manual reset lockout as desired.
❏ Set additional field-installed limit control(s) to system tempera-
ture requirements?
❏ Adjusted balancing valves and controls to provide design tem-
perature to system?
84
COMMERCIAL CONDENSING GAS
(continued)
= Btuh
- — Boiler Manual
FIRED WATER BOILER
❏ For multiple zones, adjusted for correct flow in each zone?
❏ Verified thermostat heat anticipator (if available) set properly
(see page 51 for requirements)?
❏ Cycled boiler with thermostat (and with DHW aquastat, if
installed) — Raised to highest setting and verified boiler goes
through normal startup cycle? Lowered to lowest setting and
verified boiler goes off?
❏ Measured natural gas input?
❏ Checked incoming gas pressure as specified on page 45.
❏ Observed several operating cycles for proper operation.
❏ Set room thermostat to desired room temperature (and DHW
aquastat, if installed, to desired DHW storage temperature)?
❏ Reviewed all instructions shipped with this boiler with owner
or maintenance person?
❏ Filled in
❏ Filled out the warranty registration card and send to Weil-
McLain?
❏ Return instructions to envelope and give to owner or place inside
boiler housing. Instructions must be available for all service and
adjustment of the boiler.
on page 117?
Part number 550-100-180/0917