Weil-McLain SlimFit 2 Series Manual page 84

SlimFit Series 2
®
Startup procedure
5. While still in the Gas Valve test screen, give the boiler a call for
heat. The boiler will go through it's normal Ignition sequence,
but will only open Gas Valve 1.
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
removed, 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 con-
trols cause automatic reset or manual reset lockout as
desired.
Set additional field-installed limit control(s) to system
temperature requirements?
84
commercial condensing gas
(continued)
= Btuh
— Boiler Manual
-
fired water boiler
Adjusted balancing valves and controls to provide
design temperature to system?
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 opera-
tion.
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 Installation certificate on page 117?
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.
Part number 550-100-561/0224